diff options
Diffstat (limited to 'doc/qtdesignstudio/src/qtquickdesigner-components/components/qqs-components-arc.qdoc')
| -rw-r--r-- | doc/qtdesignstudio/src/qtquickdesigner-components/components/qqs-components-arc.qdoc | 350 |
1 files changed, 350 insertions, 0 deletions
diff --git a/doc/qtdesignstudio/src/qtquickdesigner-components/components/qqs-components-arc.qdoc b/doc/qtdesignstudio/src/qtquickdesigner-components/components/qqs-components-arc.qdoc new file mode 100644 index 0000000000..37af1be548 --- /dev/null +++ b/doc/qtdesignstudio/src/qtquickdesigner-components/components/qqs-components-arc.qdoc @@ -0,0 +1,350 @@ +/**************************************************************************** +** +** Copyright (C) 2019 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the Qt Design Studio documentation. +** +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** GNU Free Documentation License Usage +** 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. Please review the following information to ensure +** the GNU Free Documentation License version 1.3 requirements +** will be met: https://www.gnu.org/licenses/fdl-1.3.html. +** +****************************************************************************/ + +/*! + \qmltype Arc + \inqmlmodule QtQuick.Studio.Components + \since QtQuick.Studio.Components 1.0 + \inherits ShapePath + \ingroup qtquickstudio-components + + \brief An arc that ends at the specified position and uses the specified + radius. + + An arc is specified by setting values in degrees for the \l begin and + \l end properties. The arc can be just a line or a filled outline. + The \l strokeColor, \l strokeWidth, and \l strokeStyle properties specify + the appearance of the line or outline. The \l dashPattern and \l dashOffset + properties specify the appearance of dashed lines. + + The area between the arc's start and end points or the area inside the + outline are painted using either a solid fill color, specified using the + \l fillColor property, or a gradient, defined using one of the + \l ShapeGradient subtypes and set using the \l gradient property. + If both a color and a gradient are specified, the gradient is used. + + To create an arc with an outline, set the \l outlineArc property to \c true. + The \l arcWidth property specifies the width of the arc outline, including + the stroke. The \l arcWidthBegin and \l arcWidthEnd properties can be used + to specify the width of the start and end points of the outline separately. + The width of the outline between the start and end points is calculated + automatically. The inner and outer curves or the outline can be adjusted by + specifying values for the \l radiusInnerAdjust and \l radiusOuterAdjust + properties. + + The \l round, \l roundBegin, and \l roundEnd properties specify whether the + end points of the arc outline have rounded caps. For an arc that does not + have an outline, the \l capStyle property specifies whether the line ends + are square or rounded. + + Because an arc has curves, it may be appropriate to set the \l antialiasing + property to improve its appearance. + + \section2 Example Usage + + You can use the Arc component in \QDS to create different kinds of arcs. + + \image studio-arc.png + + The QML code looks as follows: + + \code + ArcItem { + id: arc + x: 31 + y: 31 + capStyle: 32 + end: 180 + strokeWidth: 6 + strokeColor: "#000000" + } + + ArcItem { + id: arcOutline + strokeColor: "gray" + arcWidth: 13 + end: 180 + fillColor: "light gray" + antialiasing: true + round: true + outlineArc: true + } + + ArcItem { + id: circle + end: 360 + strokeWidth: 5 + strokeColor: "#000000" + } + + ArcItem { + id: circleOutline + outlineArc: true + round: true + strokeColor: "gray" + fillColor: "light gray" + strokeWidth: 1 + end: 360 + } + \endcode +*/ + +/*! + \qmlproperty enumeration Arc::capStyle + + The cap style of the line if the arc does not have an outline. + + \value ShapePath.FlatCap + A square line end that does not cover the end point of the line. + \value ShapePath.SquareCap + A square line end that covers the end point and extends beyond it + by half the line width. This is the default value. + \value ShapePath.RoundCap + A rounded line end. + + \sa round, roundBegin, roundEnd, Qt::PenCapStyle +*/ + +/*! + \qmlproperty ShapePath Arc::dashOffset + + The starting point of the dash pattern for the arc or arc outline. + + The offset is measured in terms of the units used to specify the dash + pattern. For example, a pattern where each stroke is four units long, + followed by a gap of two units, will begin with the stroke when drawn + as a line. However, if the dash offset is set to 4.0, any line drawn + will begin with the gap. Values of the offset up to 4.0 will cause part + of the stroke to be drawn first, and values of the offset between 4.0 and + 6.0 will cause the line to begin with part of the gap. + + The default value is 0. + + \sa QPen::setDashOffset() +*/ + +/*! + \qmlproperty ShapePath Arc::dashPattern + + The dash pattern of the arc or arc outline specified as the dashes and the + gaps between them. + + The dash pattern is specified in units of the pen's width. That is, a dash + with the length 5 and width 10 is 50 pixels long. + + Each dash is also subject to cap styles, and therefore a dash of 1 with + square cap set will extend 0.5 pixels out in each direction resulting in + a total width of 2. + + The default \l capStyle is \c {ShapePath.SquareCap}, meaning that a square + line end covers the end point and extends beyond it by half the line width. + + The default value is (4, 2), meaning a dash of 4 * \l strokeWidth pixels + followed by a space of 2 * \l strokeWidth pixels. + + \sa QPen::setDashPattern() +*/ + +/*! + \qmlproperty ShapePath Arc::fillColor + + The arc fill color. + + If the arc is just a line, the area between its \l begin and \l end + points is filled. + + If the arc has an outline, the area within the outline is filled. + + A gradient for the fill can be specified by using \l gradient. If both a + color and a gradient are specified, the gradient is used. + + When set to \c transparent, no filling occurs. + + The default value is \c white. +*/ + +/*! + \qmlproperty ShapePath Arc::gradient + + The gradient of the arc fill color. + + By default, no gradient is enabled and the value is null. In this case, the + fill uses a solid color based on the value of \l fillColor. + + When set, \l fillColor is ignored and filling is done using one of the + \l ShapeGradient subtypes. + + \note The \l Gradient type cannot be used here. Rather, prefer using one of + the advanced subtypes, like \l LinearGradient. +*/ + +/*! + \qmlproperty ShapePath Arc::strokeColor + + The color of the arc line or outline. + + When set to \c transparent, no line is drawn. + + The default value is \c white. + + \sa QColor +*/ + +/*! + \qmlproperty enumeration Arc::strokeStyle + + The style of the arc line or outline. + + \value ShapePath.SolidLine + A solid line. This is the default value. + \value ShapePath.DashLine + Dashes separated by a few pixels. + The \l dashPattern property specifies the dash pattern. + + \sa Qt::PenStyle +*/ + +/*! + \qmlproperty ShapePath Arc::strokeWidth + + The width of the arc line or outline. + + When set to a negative value, no line is drawn. + + The default value is 1. + + The total width of an arc that has an outline (that is, the outline and the + fill) is specified by \l arcWidth. +*/ + +/*! + \qmlproperty real Arc::begin + + The position in degrees where the arc begins. + + The default value is 0. + + To create a circle, set the value of this property to 0 and the value of the + \l end property to 360. +*/ + +/*! + \qmlproperty real Arc::end + + The position in degrees where the arc ends. + + To create a circle, set the value of this property to 360 and the value of + the \l begin property to 0. +*/ + +/*! + \qmlproperty real Arc::arcWidth + + The total width of an arc that has an outline, including the outline and + fill. + + \sa arcWidthBegin, arcWidthEnd, strokeWidth +*/ + +/*! + \qmlproperty real Arc::arcWidthBegin + + The width of the beginning of an arc outline. + + \sa arcWidthEnd, arcWidth +*/ + +/*! + \qmlproperty real Arc::arcWidthEnd + + The width of the end of an arc outline. + + \sa arcWidthBegin, arcWidth +*/ + +/*! + \qmlproperty real Arc::radiusInnerAdjust + + The radius of the inside edge of the arc outline. + + This property can be used to adjust the inner curve of the arc outline. +*/ + +/*! + \qmlproperty real Arc::radiusOuterAdjust + + The radius of the outside edge of the arc outline. + + This property can be used to adjust the outer curve of the arc outline. +*/ + +/*! + \qmlproperty real Arc::alpha + + The area between the \l begin and \l end points of the arc. +*/ + +/*! + \qmlproperty bool Arc::antialiasing + + Whether the arc should be antialiased. + + Antialiasing might require more memory and slow down drawing the type. +*/ + +/*! + \qmlproperty bool Arc::outlineArc + + Whether the arc has an outline. + + \sa arcWidth, arcWidthBegin, arcWidthEnd, round, roundBegin, roundEnd, + +*/ + +/*! + \qmlproperty bool Arc::round + + Whether the arc outline end points have round caps. + + The \l roundBegin and \l roundEnd properties can be used to specify the + caps separately for the end points. + +*/ + +/*! + \qmlproperty bool Arc::roundBegin + + Whether the arc outline begins with a round cap. + + \sa Qt::PenCapStyle, round, roundEnd +*/ + +/*! + \qmlproperty bool Arc::roundEnd + + Whether the arc outline ends with a round cap. + + \sa Qt::PenCapStyle, round, roundBegin +*/ |