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diff --git a/doc/src/widgets/widgets-and-layouts/stylesheet.qdoc b/doc/src/widgets/widgets-and-layouts/stylesheet.qdoc deleted file mode 100644 index eaedb847c8..0000000000 --- a/doc/src/widgets/widgets-and-layouts/stylesheet.qdoc +++ /dev/null @@ -1,3963 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). -** Contact: http://www.qt-project.org/ -** -** This file is part of the documentation of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:FDL$ -** GNU Free Documentation License -** Alternatively, this file may be used under the terms of the GNU Free -** Documentation License version 1.3 as published by the Free Software -** Foundation and appearing in the file included in the packaging of -** this file. -** -** Other Usage -** Alternatively, this file may be used in accordance with the terms -** and conditions contained in a signed written agreement between you -** and Nokia. -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -/*! - \page stylesheet.html - \title Qt Style Sheets - \brief How to use style sheets to customize the appearance of widgets. - - \ingroup frameworks-technologies - \ingroup qt-basic-concepts - \ingroup qt-gui-concepts - - \previouspage {Styles and Style Aware Widgets}{Styles} - \contentspage Widgets and Layouts - \nextpage The Style Sheet Syntax - - \keyword style sheet - \keyword stylesheet - - Qt Style Sheets are a powerful mechanism that allows you to - customize the appearance of widgets, in addition to what is - already possible by subclassing QStyle. The concepts, - terminology, and syntax of Qt Style Sheets are heavily inspired - by HTML \l{http://www.w3.org/Style/CSS/}{Cascading Style Sheets - (CSS)} but adapted to the world of widgets. - - Topics: - - \list - \li \l{Overview} - \li \l{The Style Sheet Syntax} - \li \l{Qt Designer Integration} - \li \l{Customizing Qt Widgets Using Style Sheets} - \li \l{Qt Style Sheets Reference} - \li \l{Qt Style Sheets Examples} - \endlist - - \target overview - \section1 Overview - - Styles sheets are textual specifications that can be set on the - whole application using QApplication::setStyleSheet() or on a - specific widget (and its children) using - QWidget::setStyleSheet(). If several style sheets are set at - different levels, Qt derives the effective style sheet from all - of those that are set. This is called cascading. - - For example, the following style sheet specifies that all - \l{QLineEdit}s should use yellow as their background color, and - all \l{QCheckBox}es should use red as the text color: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 0 - - For this kind of customization, style sheets are much more - powerful than QPalette. For example, it might be tempting to set - the QPalette::Button role to red for a QPushButton to obtain a - red push button. However, this wasn't guaranteed to work for all - styles, because style authors are restricted by the different - platforms' guidelines and (on Windows XP and Mac OS X) by the - native theme engine. - - Style sheets let you perform all kinds of customizations that are - difficult or impossible to perform using QPalette alone. If you - want yellow backgrounds for mandatory fields, red text for - potentially destructive push buttons, or fancy check boxes, style - sheets are the answer. - - Style sheets are applied on top of the current \l{QStyle}{widget - style}, meaning that your applications will look as native as - possible, but any style sheet constraints will be taken into - consideration. Unlike palette fiddling, style sheets offer - guarantees: If you set the background color of a QPushButton to be - red, you can be assured that the button will have a red background - in all styles, on all platforms. In addition, \l{Qt Designer} - provides style sheet integration, making it easy to view the effects - of a style sheet in different \l{QStyle}{widget styles}. - - In addition, style sheets can be used to provide a distinctive - look and feel for your application, without having to subclass - QStyle. For example, you can specify arbitrary images for radio - buttons and check boxes to make them stand out. Using this - technique, you can also achieve minor customizations that would - normally require subclassing several style classes, such as - specifying a \l{QStyle::styleHint()}{style hint}. The - \l{widgets/stylesheet}{Style Sheet} example depicted below defines - two distinctive style sheets that you can try out and modify at - will. - - \table - \row \li \inlineimage stylesheet-coffee-xp.png - \li \inlineimage stylesheet-pagefold.png - \row \li Coffee theme running on Windows XP - \li Pagefold theme running on Windows XP - \endtable - - \table - \row \li \inlineimage stylesheet-coffee-cleanlooks.png - \li \inlineimage stylesheet-pagefold-mac.png - \row \li Coffee theme running on Ubuntu Linux - \li Pagefold theme running on Mac OS X - \endtable - - When a style sheet is active, the QStyle returned by QWidget::style() - is a wrapper "style sheet" style, \e not the platform-specific style. The - wrapper style ensures that any active style sheet is respected and - otherwise forwards the drawing operations to the underlying, - platform-specific style (e.g., QWindowsXPStyle on Windows XP). - - Since Qt 4.5, Qt style sheets fully supports Mac OS X. - - \warning Qt style sheets are currently not supported for custom QStyle - subclasses. We plan to address this in some future release. -*/ - -/*! - \page stylesheet-syntax.html - \contentspage {Qt Style Sheet}{Contents} - \previouspage Qt Style Sheet - \nextpage Qt Designer Integration - \title The Style Sheet Syntax - - Qt Style Sheet terminology and syntactic rules are almost - identical to those of HTML CSS. If you already know CSS, you can - probably skim quickly through this section. - - \tableofcontents - - \section1 Style Rules - - Style sheets consist of a sequence of style rules. A \e{style - rule} is made up of a selector and a declaration. The - \e{selector} specifies which widgets are affected by the rule; - the \e{declaration} specifies which properties should be set on - the widget. For example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 1 - - In the above style rule, \c QPushButton is the selector and \c{{ - color: red }} is the declaration. The rule specifies that - QPushButton and its subclasses (e.g., \c MyPushButton) should use - red as their foreground color. - - Qt Style Sheet is generally case insensitive (i.e., \c color, - \c Color, \c COLOR, and \c cOloR refer to the same property). - The only exceptions are class names, - \l{QObject::setObjectName()}{object names}, and Qt property - names, which are case sensitive. - - Several selectors can be specified for the same declaration, - using commas (\c{,}) to separate the selectors. For example, - the rule - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 2 - - is equivalent to this sequence of three rules: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 3 - - The declaration part of a style rule is a list of - \tt{\e{property}: \e{value}} pairs, enclosed in braces (\c{{}}) - and separated with semicolons. For example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 4 - - See the \l{List of Properties} section below for the list of - properties provided by Qt widgets. - - \section1 Selector Types - - All the examples so far used the simplest type of selector, the - Type Selector. Qt Style Sheets support all the - \l{http://www.w3.org/TR/REC-CSS2/selector.html#q1}{selectors - defined in CSS2}. The table below summarizes the most useful - types of selectors. - - \table 100% - \header - \li Selector - \li Example - \li Explanation - - \row - \li Universal Selector - \li \c * - \li Matches all widgets. - - \row - \li Type Selector - \li \c QPushButton - \li Matches instances of QPushButton and of its subclasses. - - \row - \li Property Selector - \li \c{QPushButton[flat="false"]} - \li Matches instances of QPushButton that are not - \l{QPushButton::}{flat}. You may use this selector to test - for any Qt \l{Qt's Property System}{property} that supports - QVariant::toString() (see the \l{QVariant::}{toString()} - function documentation for details). In addition, the - special \c class property is supported, for the name of the - class. - - This selector may also be used to test dynamic properties. - For more information on customization using dynamic properties, - refer to \l{Customizing Using Dynamic Properties}. - - Instead of \c =, you can also use \c ~= to test whether a - Qt property of type QStringList contains a given QString. - - \warning If the value of the Qt property changes after the - style sheet has been set, it might be necessary to force a - style sheet recomputation. One way to achieve this is to - unset the style sheet and set it again. - - \row - \li Class Selector - \li \c .QPushButton - \li Matches instances of QPushButton, but not of its subclasses. - - This is equivalent to \c{*[class~="QPushButton"]}. - - \row - \li ID \target ID Selector - Selector - \li \c{QPushButton#okButton} - \li Matches all QPushButton instances whose - \l{QObject::objectName}{object name} is \c okButton. - - \row - \li Descendant Selector - \li \c{QDialog QPushButton} - \li Matches all instances of QPushButton that are descendants - (children, grandchildren, etc.) of a QDialog. - - \row - \li Child Selector - \li \c{QDialog > QPushButton} - \li Matches all instances of QPushButton that are direct - children of a QDialog. - \endtable - - \section1 Sub-Controls - - For styling complex widgets, it is necessary to access subcontrols of the - widget, such as the drop-down button of a QComboBox or the up and down - arrows of a QSpinBox. Selectors may contain \e{subcontrols} that make it - possible to restrict the application of a rule to specific widget - subcontrols. For example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 5 - - The above rule styles the drop-down button of all \l{QComboBox}es. - Although the double-colon (\c{::}) syntax is reminiscent of CSS3 - Pseudo-Elements, Qt Sub-Controls differ conceptually from these and have - different cascading semantics. - - Sub-controls are always positioned with respect to another element - a - reference element. This reference element could be the widget or another - Sub-control. For example, the \l{Qt Style Sheets Reference#drop-down-sub} - {::drop-down} of a QComboBox is placed, by default, in the top right corner - of the Padding rectangle of the QComboBox. The - \l{Qt Style Sheets Reference#drop-down-sub}{::drop-down} is placed, - by default, in the Center of the Contents rectangle of the - \l{Qt Style Sheets Reference#drop-down-sub}{::drop-down} Sub-control. See - the \l{List of Stylable Widgets} below for the Sub-controls to use to - style a widget and their default positions. - - The origin rectangle to be used can be changed using the - \l{Qt Style Sheets Reference#subcontrol-origin-prop}{subcontrol-origin} - property. For example, if we want to place the drop-down in the margin - rectangle of the QComboBox instead of the default Padding rectangle, we - can specify: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 6 - - The alignment of the drop-down within the Margin rectangle is changed - using \l{Qt Style Sheets Reference#subcontrol-position-prop} - {subcontrol-position} property. - - The \l{Qt Style Sheets Reference#width-prop}{width} and - \l{Qt Style Sheets Reference#height-prop}{height} properties can be used - to control the size of the Sub-control. Note that setting a - \l{Qt Style Sheets Reference#image-prop}{image} implicitly sets the size - of a Sub-control. - - The relative positioning scheme - (\l{Qt Style Sheets Reference#position-prop}{position} : relative), - allows the position of the Sub-Control to be offset from its initial - position. For example, when the QComboBox's drop-down button is - pressed, we might like the arrow inside to be offset to give a - "pressed" effect. To achieve this, we can specify: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 7 - - The absolute positioning scheme - (\l{Qt Style Sheets Reference#position-prop}{position} : absolute), - allows the position and size of the Sub-control to be changed with - respect to the reference element. - - Once positioned, they are treated the same as widgets and can be styled - using the \l{box model}. - - See the \l{List of Sub-Controls} below for a list of supported - sub-controls, and \l{Customizing the QPushButton's Menu Indicator - Sub-Control} for a realistic example. - - \note With complex widgets such as QComboBox and QScrollBar, if one - property or sub-control is customized, \b{all} the other properties or - sub-controls must be customized as well. - - \section1 Pseudo-States - - Selectors may contain \e{pseudo-states} that denote that restrict - the application of the rule based on the widget's state. - Pseudo-states appear at the end of the selector, with a colon - (\c{:}) in between. For example, the following rule applies when - the mouse hovers over a QPushButton: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 8 - - Pseudo-states can be negated using the exclamation operator. For - example, the following rule applies when the mouse does not hover - over a QRadioButton: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 9 - - Pseudo-states can be chained, in which case a logical AND is - implied. For example, the following rule applies to when the - mouse hovers over a checked QCheckBox: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 10 - - Negated Pseudo-states may appear in Pseudo-state chains. For example, - the following rule applies when the mouse hovers over a QPushButton - that is not pressed: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 11 - - If needed, logical OR can be expressed using the comma operator: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 12 - - Pseudo-states can appear in combination with subcontrols. For - example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 13 - - See the \l{List of Pseudo-States} section below for the list of - pseudo-states provided by Qt widgets. - - \section1 Conflict Resolution - - Conflicts arise when several style rules specify the same - properties with different values. Consider the following style - sheet: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 14 - - Both rules match QPushButton instances called \c okButton and - there is a conflict for the \c color property. To resolve this - conflict, we must take into account the \e specificity of the - selectors. In the above example, \c{QPushButton#okButton} is - considered more specific than \c QPushButton, because it - (usually) refers to a single object, not to all instances of a - class. - - Similarly, selectors with pseudo-states are more specific than - ones that do not specify pseudo-states. Thus, the following style - sheet specifies that a \l{QPushButton} should have white text - when the mouse is hovering over it, otherwise red text: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 15 - - Here's a tricky one: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 16 - - Here, both selectors have the same specificity, so if the mouse - hovers over the button while it is enabled, the second rule takes - precedence. If we want the text to be white in that case, we can - reorder the rules like this: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 17 - - Alternatively, we can make the first rule more specific: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 18 - - A similar issue arises in conjunction with Type Selectors. - Consider the following example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 19 - - Both rules apply to QPushButton instances (since QPushButton - inherits QAbstractButton) and there is a conflict for the - \l{Qt Style Sheets Reference#color-prop}{color} property. Because QPushButton - inherits QAbstractButton, it might be tempting to assume that - \c QPushButton is more specific than \c QAbstractButton. However, - for style sheet computations, all Type Selectors have the same - specificity, and the rule that appears last takes precedence. In - other words, \l{Qt Style Sheets Reference#color-prop}{color} is set to \c gray - for all \l{QAbstractButton}s, including \l{QPushButton}s. If we really - want \l{QPushButton}s to have red text, we can always reorder the - rules. - - For determining the specificity of a rule, Qt Style Sheets follow - the - \l{http://www.w3.org/TR/REC-CSS2/cascade.html#specificity}{CSS2 - Specification}: - - \quotation - \e{A selector's specificity is calculated as follows:} - - \list - \li \e{count the number of ID attributes in the selector (= a)} - \li \e{count the number of other attributes and pseudo-classes in the selector (= b)} - \li \e{count the number of element names in the selector (= c)} - \li \e{ignore pseudo-elements [i.e., \l{subcontrols}].} - \endlist - - \e{Concatenating the three numbers a-b-c (in a number system with a - large base) gives the specificity.} - - \e{Some examples:} - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 20 - \endquotation - - \section1 Cascading - - Style sheets can be set on the QApplication, on parent widgets, - and on child widgets. An arbitrary widget's effective style sheet - is obtained by merging the style sheets set on the widget's - ancestors (parent, grandparent, etc.), as well as any style sheet - set on the QApplication. - - When conflicts arise, the widget's own style sheet is always - preferred to any inherited style sheet, irrespective of the - specificity of the conflicting rules. Likewise, the parent - widget's style sheet is preferred to the grandparent's, etc. - - One consequence of this is that setting a style rule on a widget - automatically gives it precedence over other rules specified in - the ancestor widgets' style sheets or the QApplication style - sheet. Consider the following example. First, we set a style - sheet on the QApplication: - - \snippet doc/src/snippets/code/doc_src_stylesheet.cpp 21 - - Then we set a style sheet on a QPushButton object: - - \snippet doc/src/snippets/code/doc_src_stylesheet.cpp 22 - - The style sheet on the QPushButton forces the QPushButton (and - any child widget) to have blue text, in spite of the more - specific rule set provided by the application-wide style sheet. - - The result would have been the same if we had written - - \snippet doc/src/snippets/code/doc_src_stylesheet.cpp 23 - - except that if the QPushButton had children (which is unlikely), - the style sheet would have no impact on them. - - Style sheet cascading is a complex topic. Refer to the - \l{http://www.w3.org/TR/CSS2/cascade.html#cascade}{CSS2 - Specification} for the gory details. Be aware that Qt currently - doesn't implement \c{!important}. - - \section1 Inheritance - - In classic CSS, when font and color of an item is not explicitly set, - it gets automatically inherited from the parent. When using Qt Style Sheets, - a widget does \b{not} automatically inherit its font and color setting - from its parent widget. - - For example, consider a QPushButton inside a QGroupBox: - - \snippet doc/src/snippets/code/doc_src_stylesheet.cpp 24 - - The QPushButton does not have an explicit color set. Hence, instead - of inheriting color of its parent QGroupBox, it has the system color. - If we want to set the color on a QGroupBox and its children, - we can write: - - \snippet doc/src/snippets/code/doc_src_stylesheet.cpp 25 - - In contrast, setting a font and propagate using QWidget::setFont() and - QWidget::setPalette() propagates to child widgets. - - \section1 Widgets inside C++ namespaces - - The Type Selector can be used to style widgets of a particular type. For - example, - - \snippet doc/src/snippets/code/doc_src_stylesheet.cpp 26 - - Qt Style Sheet uses QObject::className() of the widget to determine - when to apply the Type Selector. When custom widgets are inside namespaces, - the QObject::className() returns <namespace>::<classname>. This conflicts - with the syntax for \l{Sub-Controls}. To overcome this problem, - when using the Type Selector for widgets inside namespaces, we must - replace the "::" with "--". For example, - - \snippet doc/src/snippets/code/doc_src_stylesheet.cpp 27 - - \section1 Setting QObject properties - - From 4.3 and above, any designable Q_PROPERTY - can be set using the qproperty-<property name> syntax. - - For example, - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 28 - - If the property references an enum declared with Q_ENUMS, you should - reference its constants by name, i.e., not their numeric value. - -*/ - -/*! - \page stylesheet-designer.html - \contentspage {Qt Style Sheet}{Contents} - \previouspage The Style Sheet Syntax - \nextpage Customizing Qt Widgets Using Style Sheets - \title Qt Designer Integration - - \l{Qt Designer}{Qt Designer} is an excellent tool - to preview style sheets. You can right-click on any widget in Designer - and select \gui{Change styleSheet...} to set the style sheet. - - \image designer-stylesheet-options.png - - In Qt 4.2 and later, \l{Qt Designer}{Qt Designer} also includes a - style sheet syntax highlighter and validator. The validator indicates - if the syntax is valid or invalid, at the bottom left of the \gui{Edit - Style Sheet} dialog. - - \image designer-validator-highlighter.png - - When you click \gui{OK} or \gui{Apply}, \QD will automatically display - the widget with its new stylesheet. - - \image designer-stylesheet-usage.png - */ - -/*! - \page stylesheet-customizing.html - \contentspage {Qt Style Sheet}{Contents} - \previouspage Qt Designer Integration - \nextpage Qt Style Sheets Reference - \title Customizing Qt Widgets Using Style Sheets - - When using style sheets, every widget is treated as a box with four - concentric rectangles: the margin rectangle, the border rectangle, the - padding rectangle, and the content rectangle. The box model describes - this in further detail. - - \tableofcontents - - \target box model - \section1 The Box Model - - The four concentric rectangles appear conceptually as below: - - \image stylesheet-boxmodel.png - - \list - \li The margin falls outside the border. - \li The border is drawn between the margin and the padding. - \li The padding falls inside the border, between the border and - the actual contents. - \li The content is what is left from the original widget or - subcontrol once we have removed the margin, the border, and - the padding. - \endlist - - The \l{Qt Style Sheets Reference#margin-prop}{margin}, - \l{Qt Style Sheets Reference#border-width-prop} - {border-width}, and - \l{Qt Style Sheets Reference#padding-prop}{padding} - properties all default to zero. In that case, all four rectangles - (\c margin, \c border, \c padding, and \c content) coincide exactly. - - You can specify a background for the widget using the - \l{Qt Style Sheets Reference#background-image-prop}{background-image} - property. By default, the background-image is drawn only for the area - inside the border. This can be changed using the - \l{Qt Style Sheets Reference#background-clip-prop}{background-clip} - property. You can use - \l{Qt Style Sheets Reference#background-repeat-prop}{background-repeat} - and - \l{Qt Style Sheets Reference#background-origin-prop}{background-origin} - to control the repetition and origin of the background image. - - A background-image does not scale with the size of the widget. To provide - a "skin" or background that scales along with the widget size, one must - use - \l{Qt Style Sheets Reference#border-image-prop}{border-image}. Since the - border-image property provides an alternate background, it is not required - to specify a background-image when border-image is specified. In the case, - when both of them are specified, the border-image draws over the - background-image. - - In addition, the \l{Qt Style Sheets Reference#image-prop}{image} property - may be used to draw an image over the border-image. The image specified does - not tile or stretch and when its size does not match the size of the widget, - its alignment is specified using the - \l{Qt Style Sheets Reference#image-position-prop}{image-position} - property. Unlike background-image and border-image, one may specify a - SVG in the image property, in which case the image is scaled automatically - according to the widget size. - - The steps to render a rule are as follows: - \list - \li Set clip for entire rendering operation (border-radius) - \li Draw the background (background-image) - \li Draw the border (border-image, border) - \li Draw overlay image (image) - \endlist - - \target sub controls - \section1 Sub-controls - - A widget is considered as a hierarchy (tree) of subcontrols drawn on top - of each other. For example, the QComboBox draws the drop-down sub-control - followed by the down-arrow sub-control. A QComboBox is thus rendered as - follows: - \list - \li Render the QComboBox { } rule - \li Render the QComboBox::drop-down { } rule - \li Render the QComboBox::down-arrow { } rule - \endlist - - Sub-controls share a parent-child relationship. In the case of QComboBox, - the parent of down-arrow is the drop-down and the parent of drop-down is - the widget itself. Sub-controls are positioned within their parent using - the \l{Qt Style Sheets Reference#subcontrol-position-prop} - {subcontrol-position} and - \l{Qt Style Sheets Reference#subcontrol-origin-prop}{subcontrol-origin} - properties. - - Once positioned, sub-controls can be styled using the \l{box model}. - - \note With complex widgets such as QComboBox and QScrollBar, if one - property or sub-control is customized, \b{all} the other properties or - sub-controls must be customized as well. - -*/ - -/*! - \page stylesheet-reference.html - \contentspage {Qt Style Sheet}{Contents} - \previouspage Customizing Qt Widgets Using Style Sheets - \nextpage Qt Style Sheets Examples - \title Qt Style Sheets Reference - - Qt Style Sheets support various properties, pseudo-states, and - subcontrols that make it possible to customize the look of - widgets. - - \tableofcontents - - \section1 List of Stylable Widgets - - The following table lists the Qt widgets that can be customized - using style sheets: - - \table 100% - \header - \li Widget - \li How to Style - - \row - \li QAbstractScrollArea \target qabstractscrollarea-widget - \li Supports the \l{box model}. - - All derivatives of QAbstractScrollArea, including QTextEdit, - and QAbstractItemView (all item view classes), support - scrollable backgrounds using - \l{Qt Style Sheets Reference#background-attachment-prop} - {background-attachment}. Setting the background-attachment to - \c{fixed} provides a background-image that does not scroll with the - viewport. Setting the background-attachment to \c{scroll}, scrolls - the background-image when the scroll bars move. - - See \l{Qt Style Sheets Examples#Customizing QAbstractScrollArea} - {Customizing QAbstractScrollArea} for an example. - - \row - \li QCheckBox \target qcheckbox-widget - \li Supports the \l{box model}. The check indicator can be - styled using the \l{#indicator-sub}{::indicator} - subcontrol. By default, the indicator is placed in the Top - Left corner of the Contents rectangle of the widget. - - The \l{#spacing-prop}{spacing} property - specifies the spacing between the check indicator and - the text. - - See \l{Qt Style Sheets Examples#Customizing QCheckBox} - {Customizing QCheckBox} for an example. - - \row - \li QColumnView \target qcolumnview-widget - \li The grip can be styled be using the \l{image-prop}{image} property. - The arrow indicators can by styled using the - \l{left-arrow-sub}{::left-arrow} subcontrol and the - \l{right-arrow-sub}{::right-arrow} subcontrol. - - \row - \li QComboBox \target qcombobox-widget - \li The frame around the combobox can be styled using the - \l{box model}. The drop-down button can be styled using - the \l{#drop-down-sub}{::drop-down} subcontrol. By default, the - drop-down button is placed in the top right corner of the padding - rectangle of the widget. The arrow mark inside the drop-down button - can be styled using the \l{#down-arrow-sub}{::down-arrow} - subcontrol. By default, the arrow is placed in the center of the - contents rectangle of the drop-down subcontrol. - - See \l{Qt Style Sheets Examples#Customizing QComboBox}{Customizing QComboBox} - for an example. - - \row - \li QDateEdit \target qdateedit-widget - \li See \l{#qspinbox-widget}{QSpinBox}. - - \row - \li QDateTimeEdit \target qdatetimeedit-widget - \li See \l{#qspinbox-widget}{QSpinBox}. - - \row - \li QDialog \target qdialog-widget - \li Supports only the \l{Qt Style Sheets Reference#background-prop}{background}, - \l{#background-clip-prop}{background-clip} and - \l{#background-origin-prop}{background-origin} properties. - - \warning Make sure you define the Q_OBJECT macro for your custom - widget. - - \row - \li QDialogButtonBox \target qdialogbuttonbox-widget - \li The layout of buttons can be altered using the - \l{#button-layout-prop}{button-layout} property. - - \row - \li QDockWidget \target qdockwidget-widget - \li Supports styling of the title bar and the title bar buttons when docked. - - The dock widget border can be styled using the \l{#border-prop}{border} - property. The \l{#title-sub}{::title} subcontrol can be used to customize - the title bar. The close and float buttons are positioned with respect - to the \l{title-sub}{::title} subcontrol using the - \l{#close-button-sub}{::close-button} and - \l{#float-button-sub}{::float-button} respectively. - - When the title bar is vertical, the \l{#vertical-ps}{:vertical} pseudo - class is set. In addition, depending on QDockWidget::DockWidgetFeature, - the \l{#closable-ps}{:closable}, \l{#floatable-ps}{:floatable} and - \l{#movable-ps}{:movable} pseudo states are set. - - \note Use QMainWindow::separator to style the resize handle. - - \warning The style sheet has no effect when the QDockWidget is undocked - as Qt uses native top level windows when undocked. - - See \l{Qt Style Sheets Examples#Customizing QDockWidget} - {Customizing QDockWidget} for an example. - - \row - \li QDoubleSpinBox \target qdoublespinbox-widget - \li See \l{#qspinbox-widget}{QSpinBox}. - - \row - \li QFrame \target qframe-widget - \li Supports the \l{box model}. - - Since 4.3, setting a stylesheet on a QLabel automatically - sets the QFrame::frameStyle property to QFrame::StyledPanel. - - See \l{Qt Style Sheets Examples#Customizing QFrame}{Customizing QFrame} - for an example. - - \row - \li QGroupBox \target qgroupbox-widget - \li Supports the \l{box model}. The title can be styled using the - \l{#title-sub}{::title} subcontrol. By default, the title is placed - depending on QGroupBox::textAlignment. - - In the case of a checkable QGroupBox, the title includes the - check indicator. The indicator is styled using the - the \l{#indicator-sub}{::indicator} subcontrol. The - \l{#spacing-prop}{spacing} property can be used to control - the spacing between the text and indicator. - - See \l{Qt Style Sheets Examples#Customizing QGroupBox}{Customizing QGroupBox} - for an example. - - \row - \li QHeaderView \target qheaderview-widget - \li Supports the \l{box model}. The sections of the header view are - styled using the \l{#section-sub}{::section} sub control. The - \c{section} Sub-control supports the \l{#middle-ps}{:middle}, - \l{#first-ps}{:first}, \l{#last-ps}{:last}, - \l{#only-one-ps}{:only-one}, \l{#next-selected-ps}{:next-selected}, - \l{#previous-selected-ps}{:previous-selected}, - \l{#selected-ps}{:selected}, - and \l{#checked-ps}{:checked} pseudo states. - - Sort indicator in can be styled using the - \l{#up-arrow-sub}{::up-arrow} and the - \l{#down-arrow-sub}{::down-arrow} Sub-control. - - See \l{Qt Style Sheets Examples#Customizing QHeaderView}{Customizing QHeaderView} - for an example. - - \row - \li QLabel \target qlabel-widget - \li Supports the \l{box model}. Does not support the - \l{#hover-ps}{:hover} pseudo-state. - - Since 4.3, setting a stylesheet on a QLabel automatically - sets the QFrame::frameStyle property to QFrame::StyledPanel. - - See \l{Qt Style Sheets Examples#Customizing QFrame}{Customizing QFrame} for an - example (a QLabel derives from QFrame). - - \row - \li QLineEdit \target qlineedit-widget - \li Support the \l{box model}. - - The color and background of the selected item is styled using - \l{#selection-color-prop}{selection-color} and - \l{#selection-background-color-prop}{selection-background-color} - respectively. - - The password character can be styled using the - \l{#lineedit-password-character-prop}{lineedit-password-character} - property. - - See \l{Qt Style Sheets Examples#Customizing QLineEdit}{Customizing QLineEdit} - for an example. - - \row - \li QListView \target qlistview-widget - \li Supports the \l{box model}. When - \l{QAbstractItemView::alternatingRowColors}{alternating row colors} - is enabled, the alternating colors can be styled using the - \l{#alternate-background-color-prop}{alternate-background-color} - property. - - The color and background of the selected item is styled using - \l{#selection-color-prop}{selection-color} and - \l{#selection-background-color-prop}{selection-background-color} - respectively. - - The selection behavior is controlled by the - \l{#show-decoration-selected-prop}{show-decoration-selected} property. - - Use the \l{#item-sub}{::item} subcontrol for more fine grained - control over the items in the QListView. - - See \l{qabstractscrollarea-widget}{QAbsractScrollArea} to - style scrollable backgrounds. - - See \l{Qt Style Sheets Examples#Customizing QListView} - {Customzing QListView} for an example. - - \row - \li QListWidget \target qlistwidget-widget - \li See \l{#qlistview-widget}{QListView}. - - \row - \li QMainWindow \target qmainwindow-widget - \li Supports styling of the separator - - The separator in a QMainWindow when using QDockWidget is styled - using the \l{#separator-sub}{::separator} subcontrol. - - See \l{Qt Style Sheets Examples#Customizing QMainWindow}{Customizing QMainWindow} - for an example. - - \row - \li QMenu \target qmenu-widget - \li Supports the \l{box model}. - - Individual items are styled using the \l{#item-sub}{::item} - subcontrol. In addition to the usually supported pseudo states, - \c{item} subcontrol supports the - \l{#selected-ps}{:selected}, \l{#default-ps}{:default}, - \l{#exclusive-ps}{:exclusive} and the - \l{#non-exclusive-ps}{non-exclusive} pseudo states. - - The indicator of checkable menu items is styled using the - \l{#indicator-sub}{::indicator} subcontrol. - - The separator is styled using the \l{#separator-sub}{::separator} - subcontrol. - - For items with a sub menu, the arrow marks are styled using the - \l{right-arrow-sub}{right-arrow} and - \l{left-arrow-sub}{left-arrow}. - - The scroller is styled using the \l{#scroller-sub}{::scroller}. - - The tear-off is styled using the \l{#tearoff-sub}{::tearoff}. - - See \l{Qt Style Sheets Examples#Customizing QMenu}{Customizing QMenu} - for an example. - - \row - \li QMenuBar \target qmenubar-widget - \li Supports the \l{box model}. The \l{#spacing-prop}{spacing} - property specifies the spacing between menu items. - Individual items are styled using the \l{#item-sub}{::item} - subcontrol. - - \warning When running on Qt/Mac, the menu bar is usually embedded into the - system-wide menu bar. In this case, the style sheet will have no effect. - - See \l{Qt Style Sheets Examples#Customizing QMenuBar}{Customizing QMenuBar} - for an example. - - \row - \li QMessageBox \target qmessagebox-widget - \li The \l{#messagebox-text-interaction-flags-prop} - {messagebox-text-interaction-flags} property can be used to alter - the interaction with text in the message box. - - \row - \li QProgressBar \target qprogressbar-widget - \li Supports the \l{box model}. The chunks of the progress bar - can be styled using the \l{#chunk-sub}{::chunk} subcontrol. - The chunk is displayed on the Contents rectangle of the widget. - - If the progress bar displays text, use the \l{text-align-prop}{text-align} - property to position the text. - - Indeterminate progress bars have the - \l{#indeterminate-ps}{:indeterminate} pseudo state set. - - See \l{Qt Style Sheets Examples#Customizing QProgressBar}{Customizing QProgressBar} - for an example. - - \row - \li QPushButton \target qpushbutton-widget - \li Supports the \l{box model}. Supports the \l{#default-ps}{:default}, - \l{#flat-ps}{:flat}, \l{#checked-ps}{:checked} pseudo states. - - For QPushButton with a menu, the menu indicator is styled - using the \l{#menu-indicator-sub}{::menu-indicator} - subcontrol. Appearance of checkable push buttons can be - customized using the \l{#open-ps}{:open} and - \l{#closed-ps}{:closed} pseudo-states. - - \warning If you only set a background-color on a QPushButton, the background - may not appear unless you set the border property to some value. This is - because, by default, the QPushButton draws a native border which completely - overlaps the background-color. For example, - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 30 - - See \l{Qt Style Sheets Examples#Customizing QPushButton}{Customizing QPushButton} - for an example. - - \row - \li QRadioButton \target qradiobutton-widget - \li Supports the \l{box model}. The check indicator can be - styled using the \l{#indicator-sub}{::indicator} - subcontrol. By default, the indicator is placed in the Top - Left corner of the Contents rectangle of the widget. - - The \l{#spacing-prop}{spacing} property - specifies the spacing between the check indicator and - the text. - - See \l{Qt Style Sheets Examples#Customizing QRadioButton} - {Customizing QRadioButton} for an example. - - \row - \li QScrollBar \target qscrollbar-widget - \li Supports the \l{box model}. The Contents rectangle of the widget - is considered to be the groove over which the slider moves. The extent - of the QScrollBar (i.e the width or the height depending on the orientation) - is set using the \l{#width-prop}{width} or \l{#height-prop}{height} property - respectively. To determine the orientation, use the - \l{#horizontal-ps}{:horizontal} and the \l{vertical-ps}{:vertical} - pseudo states. - - The slider can be styled using the \l{#handle-sub}{::handle} subcontrol. - Setting the \l{#min-width-prop}{min-width} or \l{#min-height-prop}{min-height} - provides size contraints for the slider depending on the orientation. - - The \l{add-line-sub}{::add-line} subcontrol can be used to style the - button to add a line. By default, the add-line subcontrol is placed in - top right corner of the Border rectangle of the widget. Depending on the - orientation the \l{#right-arrow-sub}{::right-arrow} or - \l{#down-arrow-sub}{::down-arrow}. By default, the arrows are placed in - the center of the Contents rectangle of the add-line subcontrol. - - The \l{sub-line-sub}{::sub-line} subcontrol can be used to style the - button to subtract a line. By default, the sub-line subcontrol is placed in - bottom right corner of the Border rectangle of the widget. Depending on the - orientation the \l{#left-arrow-sub}{::left-arrow} or - \l{#up-arrow-sub}{::up-arrow}. By default, the arrows are placed in - the center of the Contents rectangle of the sub-line subcontrol. - - The \l{sub-page-sub}{::sub-page} subcontrol can be used to style the - region of the slider that subtracts a page. The \l{add-page-sub}{::add-page} - subcontrol can be used to style the region of the slider that adds a page. - - See \l{Qt Style Sheets Examples#Customizing QScrollBar}{Customizing QScrollBar} - for an example. - - \row - \li QSizeGrip \target qsizegrip-widget - \li Supports the \l{#width-prop}{width}, - \l{#height-prop}{height}, and \l{#image-prop}{image} - properties. - - See \l{Qt Style Sheets Examples#Customizing QSizeGrip}{Customizing QSizeGrip} - for an example. - - \row - \li QSlider \target qslider-widget - \li Supports the \l{box model}. For horizontal slides, the - \l{min-width-prop}{min-width} and \l{height-prop}{height} - properties must be provided. For vertical sliders, the - \l{min-height-prop}{min-height} and \l{width-prop}{width} - properties must be provided. - - The groove of the slider is styled - using the \l{#groove-sub}{::groove}. The groove is - positioned by default in the Contents rectangle of the widget. - The thumb of the slider is styled using \l{#handle-sub}{::handle} - subcontrol. The subcontrol moves in the Contents rectangle of - the groove subcontrol. - - See \l{Qt Style Sheets Examples#Customizing QSlider}{Customizing QSlider} - for an example. - - \row - \li QSpinBox \target qspinbox-widget - \li The frame of the spin box can be styled using the \l{box - model}. - - The up button and arrow can be styled using the - \l{#up-button-sub}{::up-button} and - \l{#up-arrow-sub}{::up-arrow} subcontrols. By default, - the up-button is placed in the top right corner in the - Padding rectangle of the widget. Without an explicit size, - it occupies half the height of its reference rectangle. - The up-arrow is placed in the center of the Contents - rectangle of the up-button. - - The down button and arrow can be styled using the - \l{#down-button-sub}{::down-button} and - \l{#down-arrow-sub}{::down-arrow} subcontrols. By default, - the down-button is placed in the bottom right corner in the - Padding rectangle of the widget. Without an explicit size, - it occupies half the height of its reference rectangle. - The bottom-arrow is placed in the center of the Contents - rectangle of the bottom-button. - - See \l{Qt Style Sheets Examples#Customizing QSpinBox}{Customizing QSpinBox} - for an example. - - \row - \li QSplitter \target qsplitter-widget - \li Supports the \l{box model}. The handle of the splitter - is styled using the \l{#handle-sub}{::handle} subcontrol. - - See \l{Qt Style Sheets Examples#Customizing QSplitter}{Customizing QSplitter} - for an example. - - \row - \li QStatusBar \target qstatusbar-widget - \li Supports only the \l{Qt Style Sheets Reference#background-prop} - {background} property. - The frame for individual items can be style using the - \l{#item-sub}{::item} subcontrol. - - See \l{Qt Style Sheets Examples#Customizing QStatusBar}{Customizing QStatusBar} - for an example. - - \row - \li QTabBar \target qtabbar-widget - \li Individual tabs may be styled using the \l{#tab-sub}{::tab} subcontrol. - Close buttons using the \l{#close-button-sub}{::close-button} - The tabs support the - \l{#only-one-ps}{:only-one}, \l{#first-ps}{:first}, - \l{#last-ps}{:last}, \l{#middle-ps}{:middle}, - \l{#previous-selected-ps}{:previous--selected}, - \l{#next-selected-ps}{:next-selected}, - \l{#selected-ps}{:selected} pseudo states. - - The \l{#top-ps}{:top}, \l{#left-ps}{:left}, \l{#right-ps}{:right}, - \l{#bottom-ps}{:bottom} pseudo states depending on the orientation - of the tabs. - - Overlapping tabs for the selected state are created by using - negative margins or using the \c{absolute} position scheme. - - The tear indicator of the QTabBar is styled using the - \l{#tear-sub}{::tear} subcontrol. - - QTabBar used two QToolButtons for its scrollers that can be styled - using the \c{QTabBar QToolButton} selector. To specify the width - of the scroll button use the \l{#scroller-sub}{::scroller} - subcontrol. - - The alignment of the tabs within the QTabBar is styled - using the \l{#Alignment}{alignment} property. \warning - - To change the position of the QTabBar within a QTabWidget, use the - \l{#tab-bar-sub}{tab-bar} subcontrol (and set subcontrol-position). - - See \l{Qt Style Sheets Examples#Customizing QTabWidget and QTabBar}{Customizing QTabBar} - for an example. - - \row - \li QTabWidget \target qtabwidget-widget - \li The frame of the tab widget is styled using the - \l{#pane-sub}{::pane} subcontrol. The left and right - corners are styled using the \l{#left-corner-sub}{::left-corner} - and \l{#right-corner-sub}{::right-corner} respectively. - The position of the tab bar is controlled using the - \l{#tab-bar-sub}{::tab-bar} subcontrol. - - By default, the subcontrols have positions of a QTabWidget in - the QWindowsStyle. To place the QTabBar in the center, set the - subcontrol-position of the tab-bar subcontrol. - - The \l{#top-ps}{:top}, \l{#left-ps}{:left}, \l{#right-ps}{:right}, - \l{#bottom-ps}{:bottom} pseudo states depending on the orientation - of the tabs. - - See \l{Qt Style Sheets Examples#Customizing QTabWidget and QTabBar} - {Customizing QTabWidget} for an example. - - \row - \li QTableView \target qtableview-widget - \li Supports the \l{box model}. When - \l{QAbstractItemView::alternatingRowColors}{alternating row colors} - is enabled, the alternating colors can be styled using the - \l{#alternate-background-color-prop}{alternate-background-color} - property. - - The color and background of the selected item is styled using - \l{#selection-color-prop}{selection-color} and - \l{#selection-background-color-prop}{selection-background-color} - respectively. - - The corner widget in a QTableView is implemented as a QAbstractButton - and can be styled using the "QTableView QTableCornerButton::section" - selector. - - \warning If you only set a background-color on a QTableCornerButton, - the background may not appear unless you set the border property to - some value. This is because, by default, the QTableCornerButton draws a - native border which completely overlaps the background-color. - - The color of the grid can be specified using the - \l{#gridline-color-prop}{gridline-color} property. - - See \l{qabstractscrollarea-widget}{QAbsractScrollArea} to - style scrollable backgrounds. - - See \l{Qt Style Sheets Examples#Customizing QTableView} - {Customzing QTableView} for an example. - - \row - \li QTableWidget \target qtablewidget-widget - \li See \l{#qtableview-widget}{QTableView}. - - \row - \li QTextEdit \target qtextedit-widget - \li Supports the \l{box model}. - - The color and background of selected text is styled using - \l{#selection-color-prop}{selection-color} and - \l{#selection-background-color-prop}{selection-background-color} - respectively. - - See \l{qabstractscrollarea-widget}{QAbsractScrollArea} to - style scrollable backgrounds. - - \row - \li QTimeEdit \target qtimeedit-widget - \li See \l{#qspinbox-widget}{QSpinBox}. - - \row - \li QToolBar \target qtoolbar-widget - \li Supports the \l{box model}. - - The \l{#top-ps}{:top}, \l{#left-ps}{:left}, \l{#right-ps}{:right}, - \l{#bottom-ps}{:bottom} pseudo states depending on the area in - which the tool bar is grouped. - - The \l{#first-ps}{:first}, \l{#last-ps}{:last}, \l{#middle-ps}{:middle}, - \l{#only-one-ps}{:only-one} pseudo states indicator the position - of the tool bar within a line group (See - QStyleOptionToolBar::positionWithinLine). - - The separator of a QToolBar is styled using the - \l{#separator-sub}{::separator} subcontrol. - - The handle (to move the toolbar) is styled using the - \l{#handle-sub}{::handle} subcontrol. - - See \l{Qt Style Sheets Examples#Customizing QToolBar}{Customizing QToolBar} - for an example. - - \row - \li QToolButton \target qtoolbutton-widget - \li Supports the \l{box model}. - - If the QToolButton has a menu, is - \l{#menu-indicator-sub}{::menu-indicator} subcontrol can be used to - style the indicator. By default, the menu-indicator is positioned - at the bottom right of the Padding rectangle of the widget. - - If the QToolButton is in QToolButton::MenuButtonPopup mode, - the \l{#menu-button-sub}{::menu-button} subcontrol is used to draw the - menu button. \l{#menu-arrow-sub}{::menu-arrow} subcontrol is used to - draw the menu arrow inside the menu-button. By default, it is - positioned in the center of the Contents rectangle of the - menu-button subcontrol. - - When the QToolButton displays arrows, the \l{#up-arrow-sub}{::up-arrow}, - \l{#down-arrow-sub}{::down-arrow}, \l{#left-arrow-sub}{::left-arrow} - and \l{#right-arrow-sub}{::right-arrow} subcontrols are used. - - \warning If you only set a background-color on a QToolButton, the background - will not appear unless you set the border property to some value. This is - because, by default, the QToolButton draws a native border which completely - overlaps the background-color. For example, - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 31 - - See \l{Qt Style Sheets Examples#Customizing QToolButton}{Customizing QToolButton} - for an example. - - \row - \li QToolBox \target qtoolbox-widget - \li Supports the \l{box model}. - - The individual tabs can by styled using the - \l{#tab-sub}{::tab} subcontrol. The tabs support the - \l{#only-one-ps}{:only-one}, \l{#first-ps}{:first}, - \l{#last-ps}{:last}, \l{#middle-ps}{:middle}, - \l{#previous-selected-ps}{:previous-selected}, - \l{#next-selected-ps}{:next-selected}, - \l{#selected-ps}{:selected} pseudo states. - - \row - \li QToolTip \target qtooltip-widget - \li Supports the \l{box model}. The \l{#opacity-prop}{opacity} - property controls the opacity of the tooltip. - - See \l{Qt Style Sheets Examples#Customizing QFrame}{Customizing QFrame} - for an example (a QToolTip is a QFrame). - - \row - \li QTreeView \target qtreeview-widget - \li Supports the \l{box model}. When - \l{QAbstractItemView::alternatingRowColors}{alternating row colors} - is enabled, the alternating colors can be styled using the - \l{#alternate-background-color-prop}{alternate-background-color} - property. - - The color and background of the selected item is styled using - \l{#selection-color-prop}{selection-color} and - \l{#selection-background-color-prop}{selection-background-color} - respectively. - - The selection behavior is controlled by the - \l{#show-decoration-selected-prop}{show-decoration-selected} property. - - The branches of the tree view can be styled using the - \l{#branch-sub}{::branch} subcontrol. The - ::branch Sub-control supports the \l{open-ps}{:open}, - \l{closed-ps}{:closed}, \l{has-siblings-ps}{:has-sibling} and - \l{has-children-ps}{:has-children} pseudo states. - - Use the \l{#item-sub}{::item} subcontrol for more fine grained - control over the items in the QTreeView. - - See \l{qabstractscrollarea-widget}{QAbsractScrollArea} to - style scrollable backgrounds. - - See \l{Qt Style Sheets Examples#Customizing QTreeView}{Customizing QTreeView} - for an example to style the branches. - - \row - \li QTreeWidget \target qtreewidget-widget - \li See \l{#qtreeview-widget}{QTreeView}. - - \row - \li QWidget \target qwidget-widget - \li Supports only the \l{Qt Style Sheets Reference#background-prop}{background}, - \l{#background-clip-prop}{background-clip} and - \l{#background-origin-prop}{background-origin} properties. - - If you subclass from QWidget, you need to provide a paintEvent for your - custom QWidget as below: - \snippet doc/src/snippets/code/doc_src_stylesheet.cpp 32 - - The above code is a no-operation if there is no stylesheet set. - - \warning Make sure you define the Q_OBJECT macro for your custom - widget. - - \endtable - - \section1 List of Properties - - The table below lists all the properties supported by Qt Style - Sheets. Which values can be given to an property depend on the - \l{List of Property Types}{property's type}. Unless otherwise - specified, properties below apply to all widgets. Properties - marked with an asterisk * are specific to Qt and have no equivalent - in CSS2 or CSS3. - - \table 100% - \header - \li Property - \li Type - \li Description - - \row - \li \b{\c alternate-background-color} \target alternate-background-color-prop - \li \l{#Brush}{Brush} \BR - \li The \l{QAbstractItemView::alternatingRowColors} - {alternate background color} used in QAbstractItemView subclasses. - - If this property is not set, the default value is - whatever is set for the palette's - \l{QPalette::}{AlternateBase} role. - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 33 - - See also \l{Qt Style Sheets Reference#background-prop}{background} and - \l{#selection-background-color-prop}{selection-background-color}. - - \row - \li \b{\c background} \target background-prop - \li \l{#Background}{Background} - \li Shorthand notation for setting the background. Equivalent - to specifying \c background-color, \c background-image, \c - background-repeat, and/or \c background-position. - - This property is supported by QAbstractItemView - subclasses, QAbstractSpinBox subclasses, QCheckBox, - QComboBox, QDialog, QFrame, QGroupBox, QLabel, QLineEdit, - QMenu, QMenuBar, QPushButton, QRadioButton, QSplitter, - QTextEdit, QToolTip, and plain \l{QWidget}s. - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 34 - - - Often, it is required to set a fill pattern similar to the styles - in Qt::BrushStyle. You can use the background-color property for - Qt::SolidPattern, Qt::RadialGradientPattern, Qt::LinearGradientPattern - and Qt::ConicalGradientPattern. The other patterns are easily achieved - by creating a background image that contains the pattern. - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 35 - - See also \l{#background-origin-prop}{background-origin}, - \l{#selection-background-color-prop}{selection-background-color}, - \l{#background-clip-prop}{background-clip}, - \l{#background-attachment-prop}{background-attachment} - and \l{#alternate-background-color-prop}{alternate-background-color}. - - \row - \li \c background-color \target background-color-prop - \li \l{#Brush}{Brush} \BR - \li The background color used for the widget. - - Examples: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 36 - - \row - \li \c background-image \target background-image-prop - \li \l{#Url}{Url} - \li The background image used for the widget. Semi-transparent - parts of the image let the \c background-color shine - through. - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 37 - - \row - \li \c background-repeat \target background-repeat-prop - \li \l{#Repeat}{Repeat} - \li Whether and how the background image is repeated to fill - the \c background-origin rectangle. - - If this property is not specified, the background image - is repeated in both directions (\c repeat). - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 38 - - \row - \li \c background-position - \li \l{#Alignment}{Alignment} - \li The alignment of the background image within the \c - background-origin rectangle. - - If this property is not specified, the alignment is \c - top \c left. - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 39 - - \row - \li \b{\c background-attachment} \target background-attachment-prop - \li \l{#Attachment}{Attachment} - \li Determines whether the background-image in a QAbstractScrollArea - is scrolled or fixed with respect to the viewport. - By default, the background-image scrolls with the viewport. - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 40 - - See also \l{Qt Style Sheets Reference#background-prop}{background} - - \row - \li \b{\c background-clip} \target background-clip-prop - \li \l{#Origin}{Origin} - \li The widget's rectangle, in which the \c background is drawn. - - This property specifies the rectangle to which the \c background-color - and \c background-image are clipped. - - This property is supported by QAbstractItemView - subclasses, QAbstractSpinBox subclasses, QCheckBox, - QComboBox, QDialog, QFrame, QGroupBox, QLabel, - QPushButton, QRadioButton, QSplitter, QTextEdit, QToolTip, - and plain \l{QWidget}s. - - If this property is not specified, the default is \c - border. - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 41 - - See also \l{Qt Style Sheets Reference#background-prop}{background}, - \l{#background-origin-prop}{background-origin} and \l{The Box Model}. - - \row - \li \b{\c background-origin} \target background-origin-prop - \li \l{#Origin}{Origin} - \li The widget's background rectangle, to use in conjunction - with \c background-position and \c background-image. - - This property is supported by QAbstractItemView - subclasses, QAbstractSpinBox subclasses, QCheckBox, - QComboBox, QDialog, QFrame, QGroupBox, QLabel, - QPushButton, QRadioButton, QSplitter, QTextEdit, QToolTip, - and plain \l{QWidget}s. - - If this property is not specified, the default is \c - padding. - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 42 - - See also \l{Qt Style Sheets Reference#background-prop}{background} and - \l{The Box Model}. - - \row - \li \b{\c border} \target border-prop - \li \l{#Border}{Border} - \li Shorthand notation for setting the widget's border. Equivalent - to specifying \c border-color, \c border-style, and/or - \c border-width. - - This property is supported by QAbstractItemView - subclasses, QAbstractSpinBox subclasses, QCheckBox, - QComboBox, QFrame, QGroupBox, QLabel, QLineEdit, - QMenu, QMenuBar, QPushButton, QRadioButton, QSplitter, - QTextEdit, QToolTip, and plain \l{QWidget}s. - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 43 - - \row - \li \c border-top - \li \l{#Border}{Border} - \li Shorthand notation for setting the widget's top border. - Equivalent to specifying \c border-top-color, \c - border-top-style, and/or \c border-top-width. - - \row - \li \c border-right - \li \l{#Border}{Border} - \li Shorthand notation for setting the widget's right border. - Equivalent to specifying \c border-right-color, \c - border-right-style, and/or \c border-right-width. - - \row - \li \c border-bottom - \li \l{#Border}{Border} - \li Shorthand notation for setting the widget's bottom border. - Equivalent to specifying \c border-bottom-color, \c - border-bottom-style, and/or \c border-bottom-width. - - \row - \li \c border-left - \li \l{#Border}{Border} - \li Shorthand notation for setting the widget's left border. - Equivalent to specifying \c border-left-color, \c - border-left-style, and/or \c border-left-width. - - \row - \li \b{\c border-color} \target border-attrs - \target border-color-prop - \li \l{#Box Colors}{Box Colors} - \li The color of all the border's edges. Equivalent to - specifying \c border-top-color, \c border-right-color, \c - border-bottom-color, and \c border-left-color. - - This property is supported by QAbstractItemView - subclasses, QAbstractSpinBox subclasses, QCheckBox, - QComboBox, QFrame, QGroupBox, QLabel, QLineEdit, - QMenu, QMenuBar, QPushButton, QRadioButton, QSplitter, - QTextEdit, QToolTip, and plain \l{QWidget}s. - - If this property is not specified, it defaults to - \l{#color-prop}{color} (i.e., the widget's foreground - color). - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 44 - - See also \l{Qt Style Sheets Reference#border-style-prop}{border-style}, - \l{Qt Style Sheets Reference#border-width-prop}{border-width}, - \l{#border-image-prop}{border-image}, and \l{The Box Model}. - - \row - \li \c border-top-color - \li \l{#Brush}{Brush} \BR - \li The color of the border's top edge. - - \row - \li \c border-right-color - \li \l{#Brush}{Brush} \BR - \li The color of the border's right edge. - - \row - \li \c border-bottom-color - \li \l{#Brush}{Brush} \BR - \li The color of the border's bottom edge. - - \row - \li \c border-left-color - \li \l{#Brush}{Brush} \BR - \li The color of the border's left edge. - - \row - \li \b{\c border-image} \target border-image-prop - \li \l{#Border Image}{Border Image} - \li The image used to fill the border. The image is cut into - nine parts and stretched appropriately if necessary. See - \l{#Border Image}{Border Image} for details. - - This property is supported by QAbstractItemView - subclasses, QAbstractSpinBox subclasses, QCheckBox, - QComboBox, QFrame, QGroupBox, QLabel, QLineEdit, - QMenu, QMenuBar, QPushButton, QRadioButton, QSplitter, - QTextEdit and QToolTip. - - See also \l{#border-color-prop}{border-color}, - \l{Qt Style Sheets Reference#border-style-prop}{border-style}, - \l{Qt Style Sheets Reference#border-width-prop}{border-width}, and - \l{The Box Model}. - - \row - \li \b{\c border-radius} \target border-radius-prop - \li \l{#Radius}{Radius} - \li The radius of the border's corners. Equivalent to - specifying \c border-top-left-radius, \c - border-top-right-radius, \c border-bottom-right-radius, - and \c border-bottom-left-radius. - - The border-radius clips the element's - \l{Qt Style Sheets Reference#background-prop}{background}. - - This property is supported by QAbstractItemView - subclasses, QAbstractSpinBox subclasses, QCheckBox, - QComboBox, QFrame, QGroupBox, QLabel, QLineEdit, QMenu, - QMenuBar, QPushButton, QRadioButton, QSplitter, QTextEdit, - and QToolTip. - - If this property is not specified, it defaults to 0. - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 45 - - See also \l{Qt Style Sheets Reference#border-width-prop}{border-width} and - \l{The Box Model}. - - \row - \li \c border-top-left-radius - \li \l{#Radius}{Radius} - \li The radius of the border's top-left corner. - - \row - \li \c border-top-right-radius - \li \l{#Radius}{Radius} - \li The radius of the border's top-right corner. - - \row - \li \c border-bottom-right-radius - \li \l{#Radius}{Radius} - \li The radius of the border's bottom-right corner. Setting - this property to a positive value results in a rounded - corner. - - \row - \li \c border-bottom-left-radius - \li \l{#Radius}{Radius} - \li The radius of the border's bottom-left corner. Setting this - property to a positive value results in a rounded corner. - - \row - \li \b{\c border-style} \target border-style-prop - \li \l {Border Style} - \li The style of all the border's edges. - - This property is supported by QAbstractItemView - subclasses, QAbstractSpinBox subclasses, QCheckBox, - QComboBox, QFrame, QGroupBox, QLabel, QLineEdit, QMenu, - QMenuBar, QPushButton, QRadioButton, QSplitter, QTextEdit, - and QToolTip. - - If this property is not specified, it defaults to \c none. - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 46 - - See also \l{#border-color-prop}{border-color}, - \l{Qt Style Sheets Reference#border-style-prop}{border-style}, - \l{#border-image-prop}{border-image}, and \l{The Box Model}. - - \row - \li \c border-top-style - \li \l{#Border Style}{Border Style} - \li The style of the border's top edge. - - \row - \li \c border-right-style - \li \l{#Border Style}{Border Style} - \li The style of the border's right edge/ - - \row - \li \c border-bottom-style - \li \l{#Border Style}{Border Style} - \li The style of the border's bottom edge. - - \row - \li \c border-left-style - \li \l{#Border Style}{Border Style} - \li The style of the border's left edge. - - \row - \li \b{\c border-width} \target border-width-prop - \li \l{#Box Lengths}{Box Lengths} - \li The width of the border. Equivalent to setting \c - border-top-width, \c border-right-width, \c - border-bottom-width, and \c border-left-width. - - This property is supported by QAbstractItemView - subclasses, QAbstractSpinBox subclasses, QCheckBox, - QComboBox, QFrame, QGroupBox, QLabel, QLineEdit, QMenu, - QMenuBar, QPushButton, QRadioButton, QSplitter, QTextEdit, - and QToolTip. - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 47 - - See also \l{#border-color-prop}{border-color}, - \l{#border-radius-prop}{border-radius}, - \l{Qt Style Sheets Reference#border-style-prop}{border-style}, - \l{#border-image-prop}{border-image}, and - \l{The Box Model}. - - \row - \li \c border-top-width - \li \l{#Length}{Length} - \li The width of the border's top edge. - - \row - \li \c border-right-width - \li \l{#Length}{Length} - \li The width of the border's right edge. - - \row - \li \c border-bottom-width - \li \l{#Length}{Length} - \li The width of the border's bottom edge. - - \row - \li \c border-left-width - \li \l{#Length}{Length} - \li The width of the border's left edge. - - \row - \li \b{\c bottom} \target bottom-prop - \li \l{#Length}{Length} - \li If \l{#position-prop}{position} is \c relative (the - default), moves a \l{subcontrol} by a certain offset up; - specifying \tt{bottom: \e{y}} is then equivalent to - specifying \tt{\l{Qt Style Sheets Reference#top-prop}{top}: -\e{y}}. - - If \l{#position-prop}{position} is \c absolute, the \c - bottom property specifies the subcontrol's bottom edge - in relation to the parent's bottom edge (see also - \l{Qt Style Sheets Reference#subcontrol-origin-prop} - {subcontrol-origin}). - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 48 - - See also \l{Qt Style Sheets Reference#left-prop}{left}, \l{#right-prop}{right}, and - \l{Qt Style Sheets Reference#top-prop}{top}. - - \row - \li \b{\c button-layout} \target button-layout-prop - \li \l{#Number}{Number} - \li The layout of buttons in a QDialogButtonBox or - a QMessageBox. The possible values are 0 - (\l{QDialogButtonBox::}{WinLayout}), 1 - (\l{QDialogButtonBox::}{MacLayout}), 2 - (\l{QDialogButtonBox::}{KdeLayout}), and 3 - (\l{QDialogButtonBox::}{GnomeLayout}). - - If this property is not specified, it defaults to the - value specified by the current style for the - \l{QStyle::}{SH_DialogButtonLayout} style hint. - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 49 - - \row - \li \b{\c color} \target color-prop - \li \l{#Brush}{Brush} \BR - \li The color used to render text. - - This property is supported by all widgets that respect - the \l QWidget::palette. - - If this property is not set, the default is whatever is - set for in the widget's palette for the - QWidget::foregroundRole (typically black). - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 50 - - See also \l{Qt Style Sheets Reference#background-prop}{background} and - \l{#selection-color-prop}{selection-color}. - - \row - \li \b{\c dialogbuttonbox-buttons-have-icons} - \li \l{#Boolean}{Boolean} - \li Whether the buttons in a QDialogButtonBox show icons - - If this property is set to 1, the buttons of a QDialogButtonBox - show icons; if it is set to 0, the icons are not shown. - - See the \l{Qt Style Sheets Reference#list of icons}{List of Icons} - section for information on how to set icons. - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 51 - - \note Styles defining this property must be applied before the - QDialogButtonBox is created; this means that you must apply the - style to the parent widget or to the application itself. - - \omit - \row - \li \b{\c etch-disabled-text}* - \li \l{#Boolean}{Boolean} - \li Whether disabled text is drawn etched. - - If this property is not specified, it defaults to the - value specified by the current style for the - \l{QStyle::}{SH_EtchDisabledText} style hint. - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 52 - \endomit - - \row - \li \b{\c font} \target font-prop - \li \l{#Font}{Font} - \li Shorthand notation for setting the text's font. Equivalent - to specifying \c font-family, \c font-size, \c font-style, - and/or \c font-weight. - - This property is supported by all widgets that respect - the \l QWidget::font. - - If this property is not set, the default is the - QWidget::font. - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 53 - - \row - \li \c font-family - \li String - \li The font family. - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 54 - - \row - \li \c font-size - \li \l{#Font Size}{Font Size} - \li The font size. In this version of Qt, only pt and px metrics are - supported. - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 55 - - \row - \li \c font-style - \li \l {Font Style} - \li The font style. - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 56 - - \row - \li \c font-weight - \li \l{#Font Weight}{Font Weight} - \li The weight of the font. - - \row - \li \b{\c gridline-color}* \target gridline-color-prop - \li \l{#Color}{Color} \BR - \li The color of the grid line in a QTableView. - - If this property is not specified, it defaults to the - value specified by the current style for the - \l{QStyle::}{SH_Table_GridLineColor} style hint. - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 57 - - \row - \li \b{\c height} \target height-prop - \li \l{#Length}{Length} - \li The height of a \l{subcontrol} (or in some case, a widget). - - If this property is not specified, it defaults to a value - that depends on the subcontrol/widget and on the current style. - - \warning Unless otherwise specified, this property has no effect - when set on widgets. If you want a widget with a fixed height, set - the \l{#min-width-prop}{min-height} and - \l{#max-width-prop}{max-height} to the same value. - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 58 - - See also \l{#width-prop}{width}. - - \row - \li \b{\c icon-size} \target icon-size-prop - \li \l{#Length}{Length} - \li The width and height of the icon in a widget. - - The icon size of the following widgets can be set using this - property. - \list - \li QCheckBox - \li QListView - \li QPushButton - \li QRadioButton - \li QTabBar - \li QToolBar - \li QToolBox - \li QTreeView - \endlist - - \row - \li \b{\c image}* \target image-prop - \li \l{#Url}{Url}+ - \li The image that is drawn in the contents rectangle of a - \l{subcontrol}. - - The image property accepts a list of \l{#Url}{Url}s or - an \c{svg}. The actual image that is drawn is determined - using the same algorithm as QIcon (i.e) the image is never scaled - up but always scaled down if necessary. If a \c{svg} is specified, - the image is scaled to the size of the contents rectangle. - - Setting the image property on sub controls implicitly sets the - width and height of the sub-control (unless the image in a SVG). - - In Qt 4.3 and later, the alignment of the - image within the rectangle can be specified using - \l{image-position-prop}{image-position}. - - This property is for \l{subcontrol}s only--we don't support it for - other elements. - - \warning The QIcon SVG plugin is needed to render SVG images. - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 59 - - \row - \li \b{\c image-position} \target image-position-prop - \li \l{#Alignment}{alignment} - \li In Qt 4.3 and later, the alignment of the image image's position can be specified - using relative or absolute position. - - \row - \li \b{\c left} \target left-prop - \li \l{#Length}{Length} - \li If \l{#position-prop}{position} is \c relative (the - default), moves a \l{subcontrol} by a certain offset to - the right. - - If \l{#position-prop}{position} is \c absolute, the \c - left property specifies the subcontrol's left edge in - relation to the parent's left edge (see also - \l{Qt Style Sheets Reference#subcontrol-origin-prop}{subcontrol-origin}). - - If this property is not specified, it defaults to \c 0. - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 60 - - See also \l{#right-prop}{right}, \l{Qt Style Sheets Reference#top-prop}{top}, and - \l{#bottom-prop}{bottom}. - - \row - \li \b{\c lineedit-password-character*} \target lineedit-password-character-prop - \li \l{#Number}{Number} - \li The QLineEdit password character as a Unicode number. - - If this property is not specified, it defaults to the - value specified by the current style for the - \l{QStyle::}{SH_LineEdit_PasswordCharacter} style hint. - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 61 - - \row - \li \b{\c margin} \target margin-prop - \li \l {Box Lengths} - \li The widget's margins. Equivalent to specifying \c - margin-top, \c margin-right, \c margin-bottom, and \c - margin-left. - - This property is supported by QAbstractItemView - subclasses, QAbstractSpinBox subclasses, QCheckBox, - QComboBox, QFrame, QGroupBox, QLabel, QLineEdit, QMenu, - QMenuBar, QPushButton, QRadioButton, QSplitter, QTextEdit, - and QToolTip. - - If this property is not specified, it defaults to \c 0. - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 62 - - See also \l{Qt Style Sheets Reference#padding-prop}{padding}, - \l{#spacing-prop}{spacing}, and \l{The Box Model}. - - \row - \li \c margin-top - \li \l{#Length}{Length} - \li The widget's top margin. - - \row - \li \c margin-right - \li \l{#Length}{Length} - \li The widget's right margin. - - \row - \li \c margin-bottom - \li \l{#Length}{Length} - \li The widget's bottom margin. - - \row - \li \c margin-left - \li \l{#Length}{Length} - \li The widget's left margin. - - \row - \li \b{\c max-height} \target max-height-prop - \li \l{#Length}{Length} - \li The widget's or a subcontrol's maximum height. - - This property is supported by QAbstractItemView - subclasses, QAbstractSpinBox subclasses, QCheckBox, - QComboBox, QFrame, QGroupBox, QLabel, QLineEdit, QMenu, - QMenuBar, QPushButton, QRadioButton, QSizeGrip, QSpinBox, - QSplitter, QStatusBar, QTextEdit, and QToolTip. - - The value is relative to the contents rect in the \l{The - Box Model}{box model}. - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 63 - - See also \l{#max-width-prop}{max-width}. - - \row - \li \b{\c max-width} \target max-width-prop - \li \l{#Length}{Length} - \li The widget's or a subcontrol's maximum width. - - This property is supported by QAbstractItemView - subclasses, QAbstractSpinBox subclasses, QCheckBox, - QComboBox, QFrame, QGroupBox, QLabel, QLineEdit, QMenu, - QMenuBar, QPushButton, QRadioButton, QSizeGrip, QSpinBox, - QSplitter, QStatusBar, QTextEdit, and QToolTip. - - The value is relative to the contents rect in the \l{The - Box Model}{box model}. - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 64 - - See also \l{#max-height-prop}{max-height}. - - - \row - \li \b{\c messagebox-text-interaction-flags*} \target messagebox-text-interaction-flags-prop - \li \l{#Number}{Number} - \li The interaction behavior for text in a message box. - Possible values are based on Qt::TextInteractionFlags. - - If this property is not specified, it defaults to the - value specified by the current style for the - \l{QStyle::}{SH_MessageBox_TextInteractionFlags} style - hint. - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 65 - - \row - \li \b{\c min-height} \target min-height-prop - \li \l{#Length}{Length} - \li The widget's or a subcontrol's minimum height. - - This property is supported by QAbstractItemView - subclasses, QAbstractSpinBox subclasses, QCheckBox, - QComboBox, QFrame, QGroupBox, QLabel, QLineEdit, QMenu, - QMenuBar, QPushButton, QRadioButton, QSizeGrip, QSpinBox, - QSplitter, QStatusBar, QTextEdit, and QToolTip. - - If this property is not specified, the minimum height is - derived based on the widget's contents and the style. - - The value is relative to the contents rect in the \l{The - Box Model}{box model}. - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 66 - - See also \l{#min-width-prop}{min-width}. - - \row - \li \b{\c min-width} \target min-width-prop - \li \l{#Length}{Length} - \li The widget's or a subcontrol's minimum width. - - This property is supported by QAbstractItemView - subclasses, QAbstractSpinBox subclasses, QCheckBox, - QComboBox, QFrame, QGroupBox, QLabel, QLineEdit, QMenu, - QMenuBar, QPushButton, QRadioButton, QSizeGrip, QSpinBox, - QSplitter, QStatusBar, QTextEdit, and QToolTip. - - If this property is not specified, the minimum width is - derived based on the widget's contents and the style. - - The value is relative to the contents rect in the \l{The - Box Model}{box model}. - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 67 - - See also \l{#min-height-prop}{min-height}. - - \row - \li \b{\c opacity*} \target opacity-prop - \li \l{#Number}{Number} - \li The opacity for a widget. Possible values are from 0 - (transparent) to 255 (opaque). For the moment, this is - only supported for \l{QToolTip}{tooltips}. - - If this property is not specified, it defaults to the - value specified by the current style for the - \l{QStyle::}{SH_ToolTipLabel_Opacity} style hint. - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 68 - - \row - \li \b{\c padding} \target padding-prop - \li \l{#Box Lengths}{Box Lengths} - \li The widget's padding. Equivalent to specifying \c - padding-top, \c padding-right, \c padding-bottom, and \c - padding-left. - - This property is supported by QAbstractItemView - subclasses, QAbstractSpinBox subclasses, QCheckBox, - QComboBox, QFrame, QGroupBox, QLabel, QLineEdit, QMenu, - QMenuBar, QPushButton, QRadioButton, QSplitter, QTextEdit, - and QToolTip. - - If this property is not specified, it defaults to \c 0. - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 69 - - See also \l{#margin-prop}{margin}, - \l{#spacing-prop}{spacing}, and \l{The Box Model}. - - \row - \li \c padding-top - \li \l{#Length}{Length} - \li The widget's top padding. - - \row - \li \c padding-right - \li \l{#Length}{Length} - \li The widget's right padding. - - \row - \li \c padding-bottom - \li \l{#Length}{Length} - \li The widget's bottom padding. - - \row - \li \c padding-left - \li \l{#Length}{Length} - \li The widget's left padding. - - \row - \li \b{\c paint-alternating-row-colors-for-empty-area} - \target paint-alternating-row-colors-for-empty-area-prop - \li \c bool - \li Whether the QTreeView paints alternating row colors for the empty - area (i.e the area where there are no items) - - \row - \li \b{\c position} \target position-prop - \li \c relative \BR - | \c absolute - \li Whether offsets specified using \l{Qt Style Sheets Reference#left-prop}{left}, - \l{#right-prop}{right}, \l{Qt Style Sheets Reference#top-prop}{top}, and - \l{#bottom-prop}{bottom} are relative or absolute - coordinates. - - If this property is not specified, it defaults to \c - relative. - - \row - \li \b{\c right} \target right-prop - \li \l{#Length}{Length} - \li If \l{#position-prop}{position} is \c relative (the - default), moves a \l{subcontrol} by a certain offset to - the left; specifying \tt{right: \e{x}} is then equivalent - to specifying \tt{\l{Qt Style Sheets Reference#left-prop}{left}: -\e{x}}. - - If \l{#position-prop}{position} is \c absolute, the \c - right property specifies the subcontrol's right edge in - relation to the parent's right edge (see also - \l{Qt Style Sheets Reference#subcontrol-origin-prop}{subcontrol-origin}). - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 70 - - See also \l{Qt Style Sheets Reference#left-prop}{left}, \l{Qt Style Sheets Reference#top-prop}{top}, and - \l{#bottom-prop}{bottom}. - - \row - \li \b{\c selection-background-color*} \target selection-background-color-prop - \li \l{#Brush}{Brush} \BR - \li The background of selected text or items. - - This property is supported by all widgets that respect - the \l QWidget::palette and that show selection text. - - If this property is not set, the default value is - whatever is set for the palette's - \l{QPalette::}{Highlight} role. - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 71 - - See also \l{#selection-color-prop}{selection-color} and - \l{Qt Style Sheets Reference#background-prop}{background}. - - \row - \li \b{\c selection-color*} \target selection-color-prop - \li \l{#Brush}{Brush} \BR - \li The foreground of selected text or items. - - This property is supported by all widgets that respect - the \l QWidget::palette and that show selection text. - - If this property is not set, the default value is - whatever is set for the palette's - \l{QPalette::}{HighlightedText} role. - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 72 - - See also - \l{#selection-background-color-prop}{selection-background-color} - and \l{#color-prop}{color}. - - \row - \li \b{\c show-decoration-selected*} \target show-decoration-selected-prop - \li \l{#Boolean}{Boolean} - \li Controls whether selections in a QListView cover the - entire row or just the extent of the text. - - If this property is not specified, it defaults to the - value specified by the current style for the - \l{QStyle::}{SH_ItemView_ShowDecorationSelected} style - hint. - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 73 - - \row - \li \b{\c spacing*} \target spacing-prop - \li \l{#Length}{Length} - \li Internal spacing in the widget. - - This property is supported by QCheckBox, checkable - \l{QGroupBox}es, QMenuBar, and QRadioButton. - - If this property is not specified, the default value - depends on the widget and on the current style. - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 74 - - See also \l{Qt Style Sheets Reference#padding-prop}{padding} and - \l{#margin-prop}{margin}. - - \row - \li \b{\c subcontrol-origin*} \target subcontrol-origin-prop - \li \l{#Origin}{Origin} - \li The origin rectangle of the \l subcontrol within the - parent element. - - If this property is not specified, the default is \c - padding. - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 75 - - See also - \l{Qt Style Sheets Reference#subcontrol-position-prop}{subcontrol-position}. - - \row - \li \b{\c subcontrol-position*} \target subcontrol-position-prop - \li \l{#Alignment}{Alignment} - \li The alignment of the \l subcontrol within the origin - rectangle specified by \l{Qt Style Sheets Reference#subcontrol-origin-prop} - {subcontrol-origin}. - - If this property is not specified, it defaults to a value - that depends on the subcontrol. - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 76 - - See also - \l{Qt Style Sheets Reference#subcontrol-origin-prop}{subcontrol-origin}. - - \row - \li \b{\c text-align} \target text-align-prop - \li \l{#Alignment}{Alignment} - \li The alignment of text and icon within the contents of the widget. - - If this value is not specified, it defaults to the value - that depends on the native style. - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 77 - - This property is currently supported only by QPushButton - and QProgressBar. - - \row - \li \b{\c text-decoration} - \li \c none \BR - \c underline \BR - \c overline \BR - \c line-through - \li Additional text effects - - \row - \li \b{\c top} \target top-prop - \li \l{#Length}{Length} - \li If \l{#position-prop}{position} is \c relative (the - default), moves a \l{subcontrol} by a certain offset - down. - - If \l{#position-prop}{position} is \c absolute, the \c top - property specifies the subcontrol's top edge in relation - to the parent's top edge (see also - \l{Qt Style Sheets Reference#subcontrol-origin-prop}{subcontrol-origin}). - - If this property is not specified, it defaults to \c 0. - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 78 - - See also \l{Qt Style Sheets Reference#left-prop}{left}, \l{#right-prop}{right}, and - \l{#bottom-prop}{bottom}. - - \row - \li \b{\c width} \target width-prop - \li \l{#Length}{Length} - \li The width of a \l{subcontrol} (or a widget in some cases). - - If this property is not specified, it defaults to a value - that depends on the subcontrol/widget and on the current style. - - \warning Unless otherwise specified, this property has no effect - when set on widgets. If you want a widget with a fixed width, set - the \l{#min-width-prop}{min-width} and - \l{#max-width-prop}{max-width} to the same value. - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 79 - - See also \l{#height-prop}{height}. - - \endtable - - \target list of icons - \section1 List of Icons - - Icons used in Qt can be customized using the following properties. Each of - the properties listed in this section have the type \l{#Icon}{Icon}. - - Note that for icons to appear in buttons in a QDialogButtonBox, you need to - set the dialogbuttonbox-buttons-have-icons property to true. Also, to - customize the size of the icons, use the icon-size property. - - \table 100% - \header - \li Name - \li QStyle::StandardPixmap - - \row - \li backward-icon - \li QStyle::SP_ArrowBack - - \row - \li cd-icon - \li QStyle::SP_DriveCDIcon - - \row - \li computer-icon - \li QStyle::SP_ComputerIcon - - \row - \li desktop-icon - \li QStyle::SP_DesktopIcon - - \row - \li dialog-apply-icon - \li QStyle::SP_DialogApplyButton - - \row - \li dialog-cancel-icon - \li QStyle::SP_DialogCancelButton - - \row - \li dialog-close-icon - \li QStyle::SP_DialogCloseButton - - \row - \li dialog-discard-icon - \li QStyle::SP_DialogDiscardButton - - \row - \li dialog-help-icon - \li QStyle::SP_DialogHelpButton - - \row - \li dialog-no-icon - \li QStyle::SP_DialogNoButton - - \row - \li dialog-ok-icon - \li QStyle::SP_DialogOkButton - - \row - \li dialog-open-icon - \li QStyle::SP_DialogOpenButton - - \row - \li dialog-reset-icon - \li QStyle::SP_DialogResetButton - - \row - \li dialog-save-icon - \li QStyle::SP_DialogSaveButton - - \row - \li dialog-yes-icon - \li QStyle::SP_DialogYesButton - - \row - \li directory-closed-icon - \li QStyle::SP_DirClosedIcon - - \row - \li directory-icon - \li QStyle::SP_DirIcon - - \row - \li directory-link-icon - \li QStyle::SP_DirLinkIcon - - \row - \li directory-open-icon - \li QStyle::SP_DirOpenIcon - - \row - \li dockwidget-close-icon - \li QStyle::SP_DockWidgetCloseButton - - \row - \li downarrow-icon - \li QStyle::SP_ArrowDown - - \row - \li dvd-icon - \li QStyle::SP_DriveDVDIcon - - \row - \li file-icon - \li QStyle::SP_FileIcon - - \row - \li file-link-icon - \li QStyle::SP_FileLinkIcon - - \omit - \row - \li filedialog-backward-icon - \li QStyle::SP_FileDialogBack - \endomit - - \row - \li filedialog-contentsview-icon - \li QStyle::SP_FileDialogContentsView - - \row - \li filedialog-detailedview-icon - \li QStyle::SP_FileDialogDetailedView - - \row - \li filedialog-end-icon - \li QStyle::SP_FileDialogEnd - - \row - \li filedialog-infoview-icon - \li QStyle::SP_FileDialogInfoView - - \row - \li filedialog-listview-icon - \li QStyle::SP_FileDialogListView - - \row - \li filedialog-new-directory-icon - \li QStyle::SP_FileDialogNewFolder - - \row - \li filedialog-parent-directory-icon - \li QStyle::SP_FileDialogToParent - - \row - \li filedialog-start-icon - \li QStyle::SP_FileDialogStart - - \row - \li floppy-icon - \li QStyle::SP_DriveFDIcon - - \row - \li forward-icon - \li QStyle::SP_ArrowForward - - \row - \li harddisk-icon - \li QStyle::SP_DriveHDIcon - - \row - \li home-icon - \li QStyle::SP_DirHomeIcon - - \row - \li leftarrow-icon - \li QStyle::SP_ArrowLeft - - \row - \li messagebox-critical-icon - \li QStyle::SP_MessageBoxCritical - - \row - \li messagebox-information-icon - \li QStyle::SP_MessageBoxInformation - - \row - \li messagebox-question-icon - \li QStyle::SP_MessageBoxQuestion - - \row - \li messagebox-warning-icon - \li QStyle::SP_MessageBoxWarning - - \row - \li network-icon - \li QStyle::SP_DriveNetIcon - - \row - \li rightarrow-icon - \li QStyle::SP_ArrowRight - - \row - \li titlebar-contexthelp-icon - \li QStyle::SP_TitleBarContextHelpButton - - \row - \li titlebar-maximize-icon - \li QStyle::SP_TitleBarMaxButton - - \row - \li titlebar-menu-icon - \li QStyle::SP_TitleBarMenuButton - - \row - \li titlebar-minimize-icon - \li QStyle::SP_TitleBarMinButton - - \row - \li titlebar-normal-icon - \li QStyle::SP_TitleBarNormalButton - - \row - \li titlebar-shade-icon - \li QStyle::SP_TitleBarShadeButton - - \row - \li titlebar-unshade-icon - \li QStyle::SP_TitleBarUnshadeButton - - \row - \li trash-icon - \li QStyle::SP_TrashIcon - - \row - \li uparrow-icon - \li QStyle::SP_ArrowUp - - \endtable - - \section1 List of Property Types - - The following table summarizes the syntax and meaning of the - different property types. - - \table 100% - \header - \li Type - \li Syntax - \li Description - - \row - \li \b Alignment \target Alignment - \li \{ \c top \BR - | \c bottom \BR - | \c left \BR - | \c right \BR - | \c center \}* - \li Horizontal and/or vertical alignment. - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 80 - - \row - \li \b Attachment \target Attachment - \li \{ \c scroll \BR - | \c fixed \}* - \li Scroll or fixed attachment. - - \row - \li \b Background \target Background - \li \{ \l{#Brush}{Brush} \BR - | \l{#Url}{Url} \BR - | \l{#Repeat}{Repeat} \BR - | \l{#Alignment}{Alignment} \}* - \li A sequence of \l{#Brush}{Brush}, \l{#Url}{Url}, - \l{#Repeat}{Repeat}, and \l{#Alignment}{Alignment}. - - \row - \li \b Boolean \target Boolean - \li 0 | 1 - \li True (\c 1) or false (\c 0). - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 81 - - \row - \li \b Border \target Border - \li \{ \l{#Border Style}{Border Style} \BR - | \l{#Length}{Length} \BR - | \l{#Brush}{Brush} \}* - \li Shorthand border property. - - \row - \li \b{Border Image} \target Border Image - \li \c none \BR - | \l{Url} \l{Number}\{4\} \BR (\c stretch | \c repeat){0,2} - \li A border image is an image that is composed of nine parts - (top left, top center, top right, center left, center, - center right, bottom left, bottom center, and bottom - right). When a border of a certain size is required, the - corner parts are used as is, and the top, right, bottom, - and left parts are stretched or repeated to produce a - border with the desired size. - - See the - \l{http://www.w3.org/TR/css3-background/#the-border-image} - {CSS3 Draft Specification} for details. - - \row - \li \b{Border Style} \target Border Style - \li \c dashed \BR - | \c dot-dash \BR - | \c dot-dot-dash \BR - | \c dotted \BR - | \c double \BR - | \c groove \BR - | \c inset \BR - | \c outset \BR - | \c ridge \BR - | \c solid \BR - | \c none - \li Specifies the pattern used to draw a border. - See the \l{http://www.w3.org/TR/css3-background/#border-style} - {CSS3 Draft Specification} for details. - - \row - \li \b{Box Colors} \target Box Colors - \li \l{#Brush}{Brush}\{1,4\} - \li One to four occurrences of \l{#Brush}{Brush}, specifying the top, - right, bottom, and left edges of a box, respectively. If - the left color is not specified, it is taken to be the - same as the right color. If the bottom color is not - specified, it is taken to be the same as the top color. If - the right color is not specified, it is taken to be the - same as the top color. - - Example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 82 - - \row - \li \b{Box Lengths} \target Box Lengths - \li \l{#Length}{Length}\{1,4\} - \li One to four occurrences of \l{#Length}{Length}, specifying the - top, right, bottom, and left edges of a box, - respectively. If the left length is not specified, it is - taken to be the same as the right length. If the bottom - length is not specified, is it taken to be the same as the - top length. If the right length is not specified, it is - taken to be the same as the top length. - - Examples: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 83 - - \row - \li \b{Brush} \target Brush - \li \l{#Color}{Color} \BR - | \l{Gradient} \BR - | \l{PaletteRole} - \li Specifies a Color or a Gradient or an entry in the Palette. - - \row - \li \b{Color} \target Color - \li \tt{rgb(\e{r}, \e{g}, \e{b})} \BR - | \tt{rgba(\e{r}, \e{g}, \e{b}, \e{a})} \BR - | \tt{hsv(\e{h}, \e{s}, \e{v})} \BR - | \tt{hsva(\e{h}, \e{s}, \e{v}, \e{a})} \BR - | \tt{#\e{rrggbb}} \BR - | \l{QColor::setNamedColor()}{Color Name} \BR - \li Specifies a color as RGB (red, green, blue) or RGBA - (red, green, blue, alpha) or HSV (hue, saturation, value) or HSVA - (hue, saturation, value, alpha) or a named color. The \c rgb() or \c rgba() - syntax can be used with integer values between 0 and 255, or with - percentages. The value of s, v, and a in \c hsv() or \c hsva() must all - be in the range 0-255; the value of h must be in the range 0-359. - - Examples: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 84 - - \note The RGB colors allowed are the same as those allowed with - CSS 2.1, as listed - \l{http://www.w3.org/TR/CSS21/syndata.html#color-units}{here}. - - \row - \li \b{Font} \target Font - \li (\l{#Font Style}{Font Style} | \l{#Font Weight}{Font Weight}){0,2} \l{#Font Size}{Font Size} String - \li Shorthand font property. - - \row - \li \b{Font Size} \target Font Size - \li \l{Length} - \li The size of a font. - - \row - \li \b{Font Style} \target Font Style - \li \c normal \BR - | \c italic \BR - | \c oblique - \li The style of a font. - - \row - \li \b{Font Weight} \target Font Weight - \li \c normal \BR - | \c bold \BR - | \c 100 \BR - | \c 200 \BR - ... \BR - | \c 900 - \li The weight of a font. - - \row - \li \b{Gradient} \target Gradient - \li \c qlineargradient \BR - | \c qradialgradient \BR - | \c qconicalgradient - \li Specifies gradient fills. There are three types of gradient fills: - - \list - \li \e{Linear} gradients interpolate colors between start and - end points. - \li \e{Radial} gradients interpolate colors between a focal - point and end points on a circle surrounding it. - \li \e{Conical} gradients interpolate colors around a center - point. - \endlist - - Gradients are specified in Object Bounding Mode. Imagine the box - in which the gradient is rendered, to have its top left corner at (0, 0) - and its bottom right corner at (1, 1). Gradient parameters are - then specified as percentages from 0 to 1. These values are - extrapolated to actual box coordinates at runtime. It is possible - specify values that lie outside the bounding box (-0.6 or 1.8, for - instance). - - \warning The stops have to appear sorted in ascending order. - - Examples: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 85 - - \row - \li \b{Icon} \target Icon - \li (\l{#Url}{Url} (\c disabled | \c active | \c normal | \c selected)? - (\c on | \c off)? )* - \li A list of url, QIcon::Mode and QIcon::State. - - Example: - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 86 - - \row - \li \b{Length} \target Length - \li \l{#Number}{Number} (\c px | \c pt | \c em | \c ex)? - \li A number followed by a measurement unit. The CSS standard recommends - that user agents must - \l{http://www.w3.org/TR/CSS21/syndata.html#illegalvalues}{ignore} - a declaration with an illegal value. In Qt, it is mandatory to - specify measurement units. For compatibility with earlier versions - of Qt, numbers without measurement units are treated as pixels - in most contexts. The supported units are: - - \list - \li \c px: pixels - \li \c pt: the size of one point (i.e., 1/72 of an inch) - \li \c em: the em width of the font (i.e., the width of 'M') - \li \c ex: the ex width of the font (i.e., the height of 'x') - \endlist - - \row - \li \b{Number} \target Number - \li A decimal integer or a real number - \li Examples: \c 0, \c 18, \c +127, \c -255, \c 12.34, \c -.5, - \c 0009. - - \row - \li \b{Origin} \target Origin - \li \c margin \BR - | \c border \BR - | \c padding \BR - | \c content - \li Indicates which of four rectangles to use. - - \list - \li \c margin: The margin rectangle. The margin falls outside the border. - \li \c border: The border rectangle. This is where any border is drawn. - \li \c padding: The padding rectangle. Unlike the margins, - padding is located inside the border. - \li \c content: The content rectangle. This specifies where - the actual contents go, excluding any - padding, border, or margin. - \endlist - - See also \l{The Box Model}. - - \row - \li \b{PaletteRole} \target PaletteRole - \li \c alternate-base \BR - | \c base \BR - | \c bright-text \BR - | \c button \BR - | \c button-text \BR - | \c dark \BR - | \c highlight \BR - | \c highlighted-text \BR - | \c light \BR - | \c link \BR - | \c link-visited \BR - | \c mid \BR - | \c midlight \BR - | \c shadow \BR - | \c text \BR - | \c window \BR - | \c window-text \BR - \li These values correspond the \l{QPalette::ColorRole}{Color roles} - in the widget's QPalette. - - For example, - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 87 - - \row - \li \b{Radius} \target Radius - \li \l{#Length}{Length}\{1, 2\} - \li One or two occurrences of \l{#Length}{Length}. If only one length is - specified, it is used as the radius of the quarter circle - defining the corner. If two lengths are specified, the - first length is the horizontal radius of a quarter - ellipse, whereas the second length is the vertical radius. - - \row - \li \b{Repeat} \target Repeat - \li \c repeat-x \BR - | \c repeat-y \BR - | \c repeat \BR - | \c no-repeat - \li A value indicating the nature of repetition. - - \list - \li \c repeat-x: Repeat horizontally. - \li \c repeat-y: Repeat vertically. - \li \c repeat: Repeat horizontally and vertically. - \li \c no-repeat: Don't repeat. - \endlist - - \row - \li \b{Url} \target Url - \li \tt{url(\e{filename})} - \li \tt{\e{filename}} is the name of a file on the local disk - or stored using \l{the Qt Resource System}. Setting an - image implicitly sets the width and height of the element. - - \endtable - - \section1 List of Pseudo-States - - The following pseudo-states are supported: - - \table 100% - \header - \li Pseudo-State - \li Description - - \row \li \c :active \target active - \li This state is set when the widget resides in an active window. - - \row - \li \c :adjoins-item \target adjoins-item-ps - \li This state is set when the \l{#branch-sub}{::branch} of a QTreeView - is adjacent to an item. - - \row - \li \c :alternate \target alternate-ps - \li This state is set for every alternate row whe painting the row of - a QAbstractItemView when QAbstractItemView::alternatingRowColors() - is set to true. - - \row - \li \c :bottom \target bottom-ps - \li The item is positioned at the bottom. For example, a QTabBar - that has its tabs positioned at the bottom. - - \row - \li \c :checked \target checked-ps - \li The item is checked. For example, the - \l{QAbstractButton::checked}{checked} state of QAbstractButton. - - \row - \li \c :closable \target closable-ps - \li The items can be closed. For example, the QDockWidget has the - QDockWidget::DockWidgetClosable feature turned on. - - \row - \li \c :closed \target closed-ps - \li The item is in the closed state. For example, an non-expanded - item in a QTreeView - - \row - \li \c :default \target default-ps - \li The item is the default. For example, a - \l{QPushButton::default}{default} QPushButton or a default action - in a QMenu. - - \row - \li \c :disabled \target disabled-ps - \li The item is \l{QWidget::enabled}{disabled}. - - \row - \li \c :editable \target editable-ps - \li The QComboBox is editable. - - \row - \li \c :edit-focus \target edit-focus-ps - \li The item has edit focus (See QStyle::State_HasEditFocus). This state - is available only for Qt Extended applications. - - \row - \li \c :enabled \target enabled-ps - \li The item is \l{QWidget::enabled}{enabled}. - - \row - \li \c :exclusive \target exclusive-ps - \li The item is part of an exclusive item group. For example, a menu - item in a exclusive QActionGroup. - - \row - \li \c :first \target first-ps - \li The item is the first (in a list). For example, the first - tab in a QTabBar. - - \row - \li \c :flat \target flat-ps - \li The item is flat. For example, a - \l{QPushButton::flat}{flat} QPushButton. - - \row - \li \c :floatable \target floatable-ps - \li The items can be floated. For example, the QDockWidget has the - QDockWidget::DockWidgetFloatable feature turned on. - - \row - \li \c :focus \target focus-ps - \li The item has \l{QWidget::hasFocus()}{input focus}. - - \row - \li \c :has-children \target has-children-ps - \li The item has children. For example, an item in a - QTreeView that has child items. - - \row - \li \c :has-siblings \target has-siblings-ps - \li The item has siblings. For example, an item in a - QTreeView that siblings. - - \row - \li \c :horizontal \target horizontal-ps - \li The item has horizontal orientation - - \row - \li \c :hover \target hover-ps - \li The mouse is hovering over the item. - - \row - \li \c :indeterminate \target indeterminate-ps - \li The item has indeterminate state. For example, a QCheckBox - or QRadioButton is \l{Qt::PartiallyChecked}{partially checked}. - - \row - \li \c :last \target last-ps - \li The item is the last (in a list). For example, the last - tab in a QTabBar. - - \row - \li \c :left \target left-ps - \li The item is positioned at the left. For example, a QTabBar - that has its tabs positioned at the left. - - \row - \li \c :maximized \target maximized-ps - \li The item is maximized. For example, a maximized QMdiSubWindow. - - \row - \li \c :middle \target middle-ps - \li The item is in the middle (in a list). For example, a tab - that is not in the beginning or the end in a QTabBar. - - \row - \li \c :minimized \target minimized-ps - \li The item is minimized. For example, a minimized QMdiSubWindow. - - \row - \li \c :movable \target movable-ps - \li The item can be moved around. For example, the QDockWidget has the - QDockWidget::DockWidgetMovable feature turned on. - - \row - \li \c :no-frame \target no-frame-ps - \li The item has no frame. For example, a frameless QSpinBox - or QLineEdit. - - \row - \li \c :non-exclusive \target non-exclusive-ps - \li The item is part of a non-exclusive item group. For example, a menu - item in a non-exclusive QActionGroup. - - \row - \li \c :off \target off-ps - \li For items that can be toggled, this applies to items - in the "off" state. - - \row - \li \c :on \target on-ps - \li For items that can be toggled, this applies to widgets - in the "on" state. - - \row - \li \c :only-one \target only-one-ps - \li The item is the only one (in a list). For example, a lone tab - in a QTabBar. - - \row - \li \c :open \target open-ps - \li The item is in the open state. For example, an expanded - item in a QTreeView, or a QComboBox or QPushButton with - an open menu. - - \row - \li \c :next-selected \target next-selected-ps - \li The next item (in a list) is selected. For example, the - selected tab of a QTabBar is next to this item. - - \row - \li \c :pressed \target pressed-ps - \li The item is being pressed using the mouse. - - \row - \li \c :previous-selected \target previous-selected-ps - \li The previous item (in a list) is selected. For example, a - tab in a QTabBar that is next to the selected tab. - - \row - \li \c :read-only \target read-only-ps - \li The item is marked read only or non-editable. For example, - a read only QLineEdit or a non-editable QComboBox. - - \row - \li \c :right \target right-ps - \li The item is positioned at the right. For example, a QTabBar - that has its tabs positioned at the right. - - \row - \li \c :selected \target selected-ps - \li The item is selected. For example, the selected tab in - a QTabBar or the selected item in a QMenu. - - \row - \li \c :top \target top-ps - \li The item is positioned at the top. For example, a QTabBar - that has its tabs positioned at the top. - - \row - \li \c :unchecked \target unchecked-ps - \li The item is - \l{QAbstractButton::checked}{unchecked}. - - \row - \li \c :vertical \target vertical-ps - \li The item has vertical orientation. - - \row - \li \c :window \target window-ps - \li The widget is a window (i.e top level widget) - - \endtable - - \target subcontrols - \section1 List of Sub-Controls - - The following subcontrols are available: - - \table 100% - \header - \li Sub-Control - \li Description - - \row - \li \c ::add-line \target add-line-sub - \li The button to add a line of a QScrollBar. - - \row - \li \c ::add-page \target add-page-sub - \li The region between the handle (slider) and the \l{#add-line-sub}{add-line} - of a QScrollBar. - - \row - \li \c ::branch \target branch-sub - \li The branch indicator of a QTreeView. - - \row - \li \c ::chunk \target chunk-sub - \li The progress chunk of a QProgressBar. - - \row - \li \c ::close-button \target close-button-sub - \li The close button of a QDockWidget or tabs of QTabBar - - \row - \li \c ::corner \target corner-sub - \li The corner between two scrollbars in a QAbstractScrollArea - - \row - \li \c ::down-arrow \target down-arrow-sub - \li The down arrow of a QComboBox, QHeaderView (sort indicator), - QScrollBar or QSpinBox. - - \row - \li \c ::down-button \target down-button-sub - \li The down button of a QScrollBar or a QSpinBox. - - \row - \li \c ::drop-down \target drop-down-sub - \li The drop-down button of a QComboBox. - - \row - \li \c ::float-button \target float-button-sub - \li The float button of a QDockWidget - - \row - \li \c ::groove \target groove-sub - \li The groove of a QSlider. - - \row - \li \c ::indicator \target indicator-sub - \li The indicator of a QAbstractItemView, a QCheckBox, a QRadioButton, - a checkable QMenu item or a checkable QGroupBox. - - \row - \li \c ::handle \target handle-sub - \li The handle (slider) of a QScrollBar, a QSplitter, or a QSlider. - - \row - \li \c ::icon \target icon-sub - \li The icon of a QAbstractItemView or a QMenu. - - \row - \li \c ::item \target item-sub - \li An item of a QAbstractItemView, a QMenuBar, a QMenu, or - a QStatusBar. - - \row - \li \c ::left-arrow \target left-arrow-sub - \li The left arrow of a QScrollBar. - - \row - \li \c ::left-corner \target left-corner-sub - \li The left corner of a QTabWidget. For example, this control can be - used to control position the left corner widget in a QTabWidget. - - \row - \li \c ::menu-arrow \target menu-arrow-sub - \li The arrow of a QToolButton with a menu. - - \row - \li \c ::menu-button \target menu-button-sub - \li The menu button of a QToolButton. - - \row - \li \c ::menu-indicator \target menu-indicator-sub - \li The menu indicator of a QPushButton. - - \row - \li \c ::right-arrow \target right-arrow-sub - \li The right arrow of a QMenu or a QScrollBar. - - \row - \li \c ::pane \target pane-sub - \li The pane (frame) of a QTabWidget. - - \row - \li \c ::right-corner \target right-corner-sub - \li The right corner of a QTabWidget. For example, this control can be - used to control the position the right corner widget in a QTabWidget. - - \row - \li \c ::scroller \target scroller-sub - \li The scroller of a QMenu or QTabBar. - - \row - \li \c ::section \target section-sub - \li The section of a QHeaderView. - - \row - \li \c ::separator \target separator-sub - \li The separator of a QMenu or in a QMainWindow. - - \row - \li \c ::sub-line \target sub-line-sub - \li The button to subtract a line of a QScrollBar. - - \row - \li \c ::sub-page \target sub-page-sub - \li The region between the handle (slider) and the \l{#sub-line-sub}{sub-line} - of a QScrollBar. - - \row - \li \c ::tab \target tab-sub - \li The tab of a QTabBar or QToolBox. - - \row - \li \c ::tab-bar \target tab-bar-sub - \li The tab bar of a QTabWidget. This subcontrol exists only to - control the position of the QTabBar inside the QTabWidget. To - style the tabs using the \l{#tab-sub}{::tab} subcontrol. - - \row - \li \c ::tear \target tear-sub - \li The tear indicator of a QTabBar. - - \row - \li \c ::tearoff \target tearoff-sub - \li The tear-off indicator of a QMenu. - - \row - \li \c ::text \target text-ps - \li The text of a QAbstractItemView. - - \row - \li \c ::title \target title-sub - \li The title of a QGroupBox or a QDockWidget. - - \row - \li \c ::up-arrow \target up-arrow-sub - \li The up arrow of a QHeaderView (sort indicator), QScrollBar - or a QSpinBox. - - \row - \li \c ::up-button \target up-button-sub - \li The up button of a QSpinBox. - - \endtable - - See \l{Customizing the QPushButton's Menu Indicator Sub-Control} - for an example of how to customize a subcontrol. - */ - -/*! - \page stylesheet-examples.html - \contentspage {Qt Style Sheet}{Contents} - \previouspage Qt Style Sheets Reference - \title Qt Style Sheets Examples - - We will now see a few examples to get started with using Qt Style Sheets. - - \tableofcontents - \section1 Style Sheet Usage - - \section2 Customizing the Foreground and Background Colors - - Let's start by setting yellow as the background color of all - \l{QLineEdit}s in an application. This could be achieved like - this: - - \snippet doc/src/snippets/code/doc_src_stylesheet.cpp 88 - - If we want the property to apply only to the \l{QLineEdit}s that are - children (or grandchildren or grand-grandchildren) of a specific dialog, - we would rather do this: - - \snippet doc/src/snippets/code/doc_src_stylesheet.cpp 89 - - If we want the property to apply only to one specific QLineEdit, - we can give it a name using QObject::setObjectName() and use an - ID Selector to refer to it: - - \snippet doc/src/snippets/code/doc_src_stylesheet.cpp 90 - - Alternatively, we can set the - \l{Qt Style Sheets Reference#background-prop}{background-color} property directly on the - QLineEdit, omitting the selector: - - \snippet doc/src/snippets/code/doc_src_stylesheet.cpp 91 - - To ensure a good contrast, we should also specify a suitable - color for the text: - - \snippet doc/src/snippets/code/doc_src_stylesheet.cpp 92 - - It might be a good idea to change the colors used for selected - text as well: - - \snippet doc/src/snippets/code/doc_src_stylesheet.cpp 93 - - - \section2 Customizing Using Dynamic Properties - - There are many situations where we need to present a form that - has mandatory fields. To indicate to the user that the field is - mandatory, one effective (albeit esthetically dubious) solution - is to use yellow as the background color for those fields. It - turns out this is very easy to implement using Qt Style Sheets. - First, we would use the following application-wide style sheet: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 94 - - This means that every widget whose \c mandatoryField Qt property - is set to true would have a yellow background. - - Then, for each mandatory field widget, we would simply create a - \c mandatoryField property on the fly and set it to true. For - example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.cpp 95 - - \section2 Customizing a QPushButton Using the Box Model - - This time, we will show how to create a red QPushButton. This - QPushButton would presumably be connected to a very destructive - piece of code. - - First, we are tempted to use this style sheet: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 96 - - However, the result is a boring, flat button with no borders: - - \image stylesheet-redbutton1.png A flat red button - - What happened is this: - - \list - \li We have made a request that cannot be satisfied using the - native styles alone (e.g., the Windows XP theme engine doesn't - let us specify the background color of a button). - \li Therefore, the button is rendered using style sheets. - \li We haven't specified any values for - \l{Qt Style Sheets Reference#border-width-prop}{border-width} and - \l{Qt Style Sheets Reference#border-style-prop}{border-style}, so by default we obtain - a 0-pixel wide border of style \c none. - \endlist - - Let's improve the situation by specifying a border: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 97 - - \image stylesheet-redbutton2.png A red button with a beige border - - Things look already a lot better. But the button looks a bit - cramped. Let's specify some spacing between the border and the - text using the \l{Qt Style Sheets Reference#padding-prop}{padding}. Additionally, we will - enforce a minimum width, round the corners, and specify a larger - font to make the button look nicer: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 98 - - \image stylesheet-redbutton3.png A red button with a round beige border and big, bold text - - The only issue remaining is that the button doesn't react when we - press it. We can fix this by specifying a slightly different - background color and use a different border style. - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 99 - - \section2 Customizing the QPushButton's Menu Indicator Sub-Control - - Subcontrols give access to the sub-elements of a widget. For - example, a QPushButton associated with a menu (using - QPushButton::setMenu()) has a menu indicator. Let's customize - the menu indicator for the red push button: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 100 - - By default, the menu indicator is located at the bottom-right - corner of the padding rectangle. We can change this by specifying - \l{Qt Style Sheets Reference#subcontrol-position-prop}{subcontrol-position} and - \l{Qt Style Sheets Reference#subcontrol-origin-prop}{subcontrol-origin} to anchor the - indicator differently. We can also use \l{Qt Style Sheets Reference#top-prop}{top} and - \l{Qt Style Sheets Reference#left-prop}{left} to move the indicator by a few pixels. For - example: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 101 - - This positions the \c myindicator.png to the center right of the - QPushButton's \l{Qt Style Sheets Reference#padding-prop}{padding} rectangle (see - \l{Qt Style Sheets Reference#subcontrol-origin-prop}{subcontrol-origin} for more - information). - - \section2 Complex Selector Example - - Since red seems to be our favorite color, let's make the text in - QLineEdit red by setting the following application-wide - stylesheet: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 102 - - However, we would like to give a visual indication that a - QLineEdit is read-only by making it appear gray: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 103 - - At some point, our design team comes with the requirement that - all \l{QLineEdit}s in the registration form (with the - \l{QObject::objectName}{object name} \c registrationDialog) to be - brown: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 104 - - A few UI design meetings later, we decide that all our - \l{QDialog}s should have brown colored \l{QLineEdit}s: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 105 - - Quiz: What happens if we have a read-only QLineEdit in a QDialog? - [Hint: The \l{The Style Sheet Syntax#Conflict Resolution}{Conflict Resolution} section above explains - what happens in cases like this.] - - \section1 Customizing specific widgets - - This section provides examples to customize specific widgets using Style Sheets. - - \section2 Customizing QAbstractScrollArea - - The background of any QAbstractScrollArea (Item views, QTextEdit - and QTextBrowser) can be set using the background properties. For example, - to set a background-image that scrolls with the scroll bar: - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 106 - - If the background-image is to be fixed with the viewport: - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 107 - - \section2 Customizing QCheckBox - - Styling of a QCheckBox is almost identical to styling a QRadioButton. The - main difference is that a tristate QCheckBox has an indeterminate state. - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 108 - - \section2 Customizing QComboBox - - We will look at an example where the drop down button of a QComboBox - appears "merged" with the combo box frame. - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 109 - - The pop-up of the QComboBox is a QAbstractItemView and is styled using - the descendant selector: - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 110 - - \section2 Customizing QDockWidget - - The title bar and the buttons of a QDockWidget can be customized as - follows: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 111 - - If one desires to move the dock widget buttons to the left, the following - style sheet can be used: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 112 - - \note To customize the separator (resize handle) of a QDockWidget, - use QMainWindow::separator. - - \section2 Customizing QFrame - - A QFrame is styled using the \l{The Box Model}. - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 113 - - \section2 Customizing QGroupBox - - Let us look at an example that moves the QGroupBox's title to - the center. - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 114 - - For a checkable QGroupBox, use the \{#indicator-sub}{::indicator} subcontrol - and style it exactly like a QCheckBox (i.e) - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 115 - - \section2 Customizing QHeaderView - - QHeaderView is customized as follows: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 116 - - \section2 Customizing QLineEdit - - The frame of a QLineEdit is styled using the \l{The Box Model}. To - create a line edit with rounded corners, we can set: - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 117 - - The password character of line edits that have QLineEdit::Password - echo mode can be set using: - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 118 - - The background of a read only QLineEdit can be modified as below: - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 119 - - \section2 Customizing QListView - - The background color of alternating rows can be customized using the following - style sheet: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 120 - - To provide a special background when you hover over items, we can use the - \l{item-sub}{::item} subcontrol. For example, - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 121 - - \section2 Customizing QMainWindow - - The separator of a QMainWindow can be styled as follows: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 122 - - \section2 Customizing QMenu - - Individual items of a QMenu are styled using the 'item' subcontrol as - follows: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 123 - - For a more advanced customization, use a style sheet as follows: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 124 - - \section2 Customizing QMenuBar - - QMenuBar is styled as follows: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 125 - - \section2 Customizing QProgressBar - - The QProgressBar's \l{stylesheet-reference.html#border-prop}{border}, - \l{stylesheet-reference.html#chunk-sub}{chunk}, and - \l{stylesheet-reference.html#text-align-prop}{text-align} can be customized using - style sheets. However, if one property or sub-control is customized, - all the other properties or sub-controls must be customized as well. - - \image progressBar-stylesheet.png - - For example, we change the \l{stylesheet-reference.html#border-prop} - {border} to grey and the \l{stylesheet-reference.html#chunk-sub}{chunk} - to cerulean. - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 126 - - This leaves the \l{stylesheet-reference.html#text-align-prop} - {text-align}, which we customize by positioning the text in the center of - the progress bar. - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 127 - - A \l{stylesheet-reference.html#margin-prop}{margin} can be included to - obtain more visible chunks. - - \image progressBar2-stylesheet.png - - In the screenshot above, we use a - \l{stylesheet-reference.html#margin-prop}{margin} of 0.5 pixels. - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 128 - - \section2 Customizing QPushButton - - A QPushButton is styled as follows: - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 129 - - For a QPushButton with a menu, use the - \l{Qt Style Sheets Reference#menu-indicator-sub}{::menu-indicator} - subcontrol. - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 130 - - Checkable QPushButton have the \l{Qt Style Sheets Reference#checked-ps} - {:checked} pseudo state set. - - \section2 Customizing QRadioButton - - The indicator of a QRadioButton can be changed using: - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 131 - - \section2 Customizing QScrollBar - - The QScrollBar can be styled using its subcontrols like - \l{stylesheet-reference.html#handle-sub}{handle}, - \l{stylesheet-reference.html#add-line-sub}{add-line}, - \l{stylesheet-reference.html#sub-line-sub}{sub-line}, and so on. Note that - if one property or sub-control is customized, all the other properties or - sub-controls must be customized as well. - - \image stylesheet-scrollbar1.png - - The scroll bar above has been styled in aquamarine with a solid grey - border. - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 132 - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 133 - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 134 - - The \l{stylesheet-reference.html#left-arrow-sub}{left-arrow} and - \l{stylesheet-reference.html#right-arrow-sub}{right-arrow} have a solid grey - border with a white background. As an alternative, you could also embed the - image of an arrow. - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 135 - - If you want the scroll buttons of the scroll bar to be placed together - (instead of the edges) like on Mac OS X, you can use the following - stylesheet: - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 136 - - The scroll bar using the above stylesheet looks like this: - \image stylesheet-scrollbar2.png - - - To customize a vertical scroll bar use a style sheet similar to the following: - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 137 - - \section2 Customizing QSizeGrip - - QSizeGrip is usually styled by just setting an image. - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 138 - - \section2 Customizing QSlider - - You can style horizontal slider as below: - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 139 - - If you want to change the color of the slider parts before and after the handle, you can use the add-page - and sub-page subcontrols. For example, for a vertical slider: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 140 - - \section2 Customizing QSpinBox - - QSpinBox can be completely customized as below (the style sheet has commentary inline): - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 141 - - - \section2 Customizing QSplitter - - A QSplitter derives from a QFrame and hence can be styled like a QFrame. - The grip or the handle is customized using the - \l{Qt Style Sheets Reference#handle-sub}{::handle} subcontrol. - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 142 - - \section2 Customizing QStatusBar - - We can provide a background for the status bar and a border for items - inside the status bar as follows: - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 143 - - Note that widgets that have been added to the QStatusBar can be styled - using the descendant declaration (i.e) - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 144 - - \section2 Customizing QTabWidget and QTabBar - - \image tabWidget-stylesheet1.png - - For the screenshot above, we need a stylesheet as follows: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 145 - - Often we require the tabs to overlap to look like below: - \image tabWidget-stylesheet2.png - - For a tab widget that looks like above, we make use of - \l{http://www.communitymx.com/content/article.cfm?cid=B0029} - {negative margins}. The resulting stylesheet looks like this: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 146 - - To move the tab bar to the center (as below), we require the following stylesheet: - \image tabWidget-stylesheet3.png - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 147 - - The tear indicator and the scroll buttons can be further customized as follows: - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 148 - - Since Qt 4.6 the close button can be customized as follow: - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 159 - - \section2 Customizing QTableView - - Suppose we'd like our selected item in QTableView to have bubblegum pink - fade to white as its background. - - \image tableWidget-stylesheet.png - - This is possible with the - \l{stylesheet-reference.html#selection-background-color-prop} - {selection-background-color} property and the syntax required is: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 149 - - The corner widget can be customized using the following style sheet - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 150 - - \section2 Customizing QToolBar - - The background and the handle of a QToolBar is customized as below: - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 151 - - \section2 Customizing QToolBox - - The tabs of the QToolBox are customized using the 'tab' subcontrol. - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 152 - - \section2 Customizing QToolButton - - There are three types of QToolButtons. - \list - \li The QToolButton has no menu. In this case, the QToolButton is styled - exactly like QPushButton. See - \l{#Customizing QPushButton}{Customizing QPushButton} for an - example. - - \li The QToolButton has a menu and has the QToolButton::popupMode set to - QToolButton::DelayedPopup or QToolButton::InstantPopup. In this case, - the QToolButton is styled exactly like a QPushButton with a menu. - See \l{#Customizing QPushButton}{Customizing QPushButton} for an - example of the usage of the menu-indicator pseudo state. - - \li The QToolButton has its QToolButton::popupMode set to - QToolButton::MenuButtonPopup. In this case, we style it as follows: - \endlist - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 153 - - - \section2 Customizing QToolTip - - QToolTip is customized exactly like a QLabel. In addition, for platforms - that support it, the opacity property may be set to adjust the opacity. - - For example, - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 154 - - \section2 Customizing QTreeView - - The background color of alternating rows can be customized using the following - style sheet: - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 155 - - To provide a special background when you hover over items, we can use the - \l{item-sub}{::item} subcontrol. For example, - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 156 - - The branches of a QTreeView are styled using the - \l{Qt Style Sheets Reference#branch-sub}{::branch} subcontrol. The - following stylesheet color codes the various states when drawing - a branch. - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 157 - - Colorful, though it is, a more useful example can be made using the - following images: - - \table - \row - \li \inlineimage stylesheet-vline.png - \li \inlineimage stylesheet-branch-more.png - \li \inlineimage stylesheet-branch-end.png - \li \inlineimage stylesheet-branch-closed.png - \li \inlineimage stylesheet-branch-open.png - \row - \li vline.png - \li branch-more.png - \li branch-end.png - \li branch-closed.png - \li branch-open.png - \endtable - - \snippet doc/src/snippets/code/doc_src_stylesheet.qdoc 158 - - The resulting tree view looks like this: - - \image stylesheet-treeview.png - - \sa {Style Sheet Example}, {Supported HTML Subset}, QStyle - - - \section1 Common mistakes - - This section lists some common mistakes when using stylesheets. - - \section2 QPushButton and images - - When styling a QPushButton, it is often desirable to use an image as the - button graphic. It is common to try the - \l{Qt Style Sheets Reference#background-image-prop}{background-image} - property, - but this has a number of drawbacks: For instance, the background will - often appear hidden behind the button decoration, because it is not - considered a background. In addition, if the button is resized, the - entire background will be stretched or tiled, which does not - always look good. - - It is better to use the - \l{Qt Style Sheets Reference#border-image-prop}{border-image} - property, as it will always display the image, - regardless of the background (you can combine it with a background if it - has alpha values in it), and it has special settings to deal with button - resizing. - - Consider the following snippet: - - \snippet doc/src/snippets/stylesheet/common-mistakes.cpp 1 - - This will produce a button looking like this: - - \image stylesheet-border-image-normal.png - - The numbers after the url gives the top, right, bottom and left number of - pixels, respectively. These numbers correspond to the border and should not - stretch when the size changes. - Whenever you resize the button, the middle part of the image will stretch - in both directions, while the pixels specified in the stylesheet - will not. This makes the borders of the button look more natural, like - this: - - \table - \row - \li \inlineimage stylesheet-border-image-stretched.png - \row - \li With borders - \endtable - - \table - \row - \li \inlineimage stylesheet-border-image-wrong.png - \row - \li Without borders - \endtable - - */ |