diff options
Diffstat (limited to 'examples/widgets')
| -rw-r--r-- | examples/widgets/doc/src/charactermap.qdoc | 251 | ||||
| -rw-r--r-- | examples/widgets/widgets/CMakeLists.txt | 1 | ||||
| -rw-r--r-- | examples/widgets/widgets/charactermap/CMakeLists.txt | 38 | ||||
| -rw-r--r-- | examples/widgets/widgets/charactermap/charactermap.pro | 12 | ||||
| -rw-r--r-- | examples/widgets/widgets/charactermap/characterwidget.cpp | 145 | ||||
| -rw-r--r-- | examples/widgets/widgets/charactermap/characterwidget.h | 50 | ||||
| -rw-r--r-- | examples/widgets/widgets/charactermap/main.cpp | 14 | ||||
| -rw-r--r-- | examples/widgets/widgets/charactermap/mainwindow.cpp | 264 | ||||
| -rw-r--r-- | examples/widgets/widgets/charactermap/mainwindow.h | 50 | ||||
| -rw-r--r-- | examples/widgets/widgets/widgets.pro | 1 |
10 files changed, 0 insertions, 826 deletions
diff --git a/examples/widgets/doc/src/charactermap.qdoc b/examples/widgets/doc/src/charactermap.qdoc deleted file mode 100644 index ee6162302f..0000000000 --- a/examples/widgets/doc/src/charactermap.qdoc +++ /dev/null @@ -1,251 +0,0 @@ -// Copyright (C) 2016 The Qt Company Ltd. -// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GFDL-1.3-no-invariants-only - -/*! -\example widgets/charactermap -\title Character Map Example -\ingroup examples-widgets -\brief The Character Map example shows how to create a custom widget that can -both display its own content and respond to user input. - -The example displays an array of characters which the user can click on -to enter text in a line edit. The contents of the line edit can then be -copied into the clipboard, and pasted into other applications. The -purpose behind this sort of tool is to allow users to enter characters -that may be unavailable or difficult to locate on their keyboards. - -\borderedimage charactermap-example.png -\caption Screenshot of the Character Map example - -The example consists of the following classes: - -\list -\li \c CharacterWidget displays the available characters in the current - font and style. -\li \c MainWindow provides a standard main window that contains font and - style information, a view onto the characters, a line edit, and a push - button for submitting text to the clipboard. -\endlist - -\section1 CharacterWidget Class Definition - -The \c CharacterWidget class is used to display an array of characters in -a user-specified font and style. For flexibility, we subclass QWidget and -reimplement only the functions that we need to provide basic rendering -and interaction features. - -The class definition looks like this: - -\snippet widgets/charactermap/characterwidget.h 0 - -The widget does not contain any other widgets, so it must provide its own -size hint to allow its contents to be displayed correctly. -We reimplement \l{QWidget::paintEvent()} to draw custom content. We also -reimplement \l{QWidget::mousePressEvent()} to allow the user to interact -with the widget. - -The updateFont() and updateStyle() slots are used to update the font and -style of the characters in the widget whenever the user changes the -settings in the application. -The class defines the characterSelected() signal so that other parts -of the application are informed whenever the user selects a character in -the widget. -As a courtesy, the widget provides a tooltip that shows the current -character value. We reimplement the \l{QWidget::mouseMoveEvent()} event -handler and define showToolTip() to enable this feature. - -The \c columns, \c displayFont and \c currentKey private data members -are used to record the number of columns to be shown, the current font, -and the currently highlighted character in the widget. - -\section1 CharacterWidget Class Implementation - -Since the widget is to be used as a simple canvas, the constructor just -calls the base class constructor and defines some default values for -private data members. - -\snippet widgets/charactermap/characterwidget.cpp 0 - -We initialize \c currentKey with a value of -1 to indicate -that no character is initially selected. We enable mouse tracking to -allow us to follow the movement of the cursor across the widget. - -The class provides two functions to allow the font and style to be set up. -Each of these modify the widget's display font and call update(): - -\snippet widgets/charactermap/characterwidget.cpp 1 -\codeline -\snippet widgets/charactermap/characterwidget.cpp 2 - -We use a fixed size font for the display. Similarly, a fixed size hint is -provided by the sizeHint() function: - -\snippet widgets/charactermap/characterwidget.cpp 3 - -Three standard event functions are implemented so that the widget -can respond to clicks, provide tooltips, and render the available -characters. The paintEvent() shows how the contents of the widget are -arranged and displayed: - -\snippet widgets/charactermap/characterwidget.cpp 6 - -A QPainter is created for the widget and, in all cases, we ensure that the -widget's background is painted. The painter's font is set to the -user-specified display font. - -The area of the widget that needs to be redrawn is used to determine which -characters need to be displayed: - -\snippet widgets/charactermap/characterwidget.cpp 7 - -Using integer division, we obtain the row and column numbers of each -characters that should be displayed, and we draw a square on the widget -for each character displayed. - -\snippet widgets/charactermap/characterwidget.cpp 8 -\snippet widgets/charactermap/characterwidget.cpp 9 - -The symbols for each character in the array are drawn within each square, -with the symbol for the most recently selected character displayed in red: - -\snippet widgets/charactermap/characterwidget.cpp 10 - -We do not need to take into account the difference between the area -displayed in the viewport and the area we are drawing on because -everything outside the visible area will be clipped. - -The mousePressEvent() defines how the widget responds to mouse clicks. - -\snippet widgets/charactermap/characterwidget.cpp 5 - -We are only interested when the user clicks with the left mouse button -over the widget. When this happens, we calculate which character was -selected and emit the characterSelected() signal. -The character's number is found by dividing the x and y-coordinates of -the click by the size of each character's grid square. Since the number -of columns in the widget is defined by the \c columns variable, we -simply multiply the row index by that value and add the column number -to obtain the character number. - -If any other mouse button is pressed, the event is passed on to the -QWidget base class. This ensures that the event can be handled properly -by any other interested widgets. - -The mouseMoveEvent() maps the mouse cursor's position in global -coordinates to widget coordinates, and determines the character that -was clicked by performing the calculation - -\snippet widgets/charactermap/characterwidget.cpp 4 - -The tooltip is given a position defined in global coordinates. - -\section1 MainWindow Class Definition - -The \c MainWindow class provides a minimal user interface for the example, -with only a constructor, slots that respond to signals emitted by standard -widgets, and some convenience functions that are used to set up the user -interface. - -The class definition looks like this: - -\snippet widgets/charactermap/mainwindow.h 0 - -The main window contains various widgets that are used to control how -the characters will be displayed, and defines the findFonts() function -for clarity and convenience. The findStyles() slot is used by the widgets -to determine the styles that are available, insertCharacter() inserts -a user-selected character into the window's line edit, and -updateClipboard() synchronizes the clipboard with the contents of the -line edit. - -\section1 MainWindow Class Implementation - -In the constructor, we set up the window's central widget and fill it with -some standard widgets (two comboboxes, a line edit, and a push button). -We also construct a CharacterWidget custom widget, and add a QScrollArea -so that we can view its contents: - -\snippet widgets/charactermap/mainwindow.cpp 0 - -QScrollArea provides a viewport onto the \c CharacterWidget when we set -its widget and handles much of the work needed to provide a scrolling -viewport. - -The font combo box is automatically populated with a list of available -fonts. We list the available styles for the current font in the style -combobox using the following function: - -\snippet widgets/charactermap/mainwindow.cpp 1 - -The line edit and push button are used to supply text to the clipboard: - -\snippet widgets/charactermap/mainwindow.cpp 2 - -We also obtain a clipboard object so that we can send text entered by the -user to other applications. - -Most of the signals emitted in the example come from standard widgets. -We connect these signals to slots in this class, and to the slots provided -by other widgets. - -\snippet widgets/charactermap/mainwindow.cpp 4 - -The font combobox's -\l{QFontComboBox::currentFontChanged()}{currentFontChanged()} signal is -connected to the findStyles() function so that the list of available styles -can be shown for each font that is used. Since both the font and the style -can be changed by the user, the font combobox's currentFontChanged() signal -and the style combobox's -\l{QComboBox::currentIndexChanged()}{currentIndexChanged()} are connected -directly to the character widget. - -The final two connections allow characters to be selected in the character -widget, and text to be inserted into the clipboard: - -\snippet widgets/charactermap/mainwindow.cpp 5 - -The character widget emits the characterSelected() custom signal when -the user clicks on a character, and this is handled by the insertCharacter() -function in this class. The clipboard is changed when the push button emits -the clicked() signal, and we handle this with the updateClipboard() function. - -The remaining code in the constructor sets up the layout of the central widget, -and provides a window title: - -\snippet widgets/charactermap/mainwindow.cpp 6 - -The font combobox is automatically populated with a list of available font -families. The styles that can be used with each font are found by the -findStyles() function. This function is called whenever the user selects a -different font in the font combobox. - -\snippet widgets/charactermap/mainwindow.cpp 7 - -We begin by recording the currently selected style, and we clear the -style combobox so that we can insert the styles associated with the -current font family. - -\snippet widgets/charactermap/mainwindow.cpp 8 - -We use the font database to collect the styles that are available for the -current font, and insert them into the style combobox. The current item is -reset if the original style is not available for this font. - -The last two functions are slots that respond to signals from the character -widget and the main window's push button. The insertCharacter() function is -used to insert characters from the character widget when the user clicks a -character: - -\snippet widgets/charactermap/mainwindow.cpp 9 - -The character is inserted into the line edit at the current cursor position. - -The main window's "To clipboard" push button is connected to the -updateClipboard() function so that, when it is clicked, the clipboard is -updated to contain the contents of the line edit: - -\snippet widgets/charactermap/mainwindow.cpp 10 - -We copy all the text from the line edit to the clipboard, but we do not clear -the line edit. -*/ diff --git a/examples/widgets/widgets/CMakeLists.txt b/examples/widgets/widgets/CMakeLists.txt index d852233c8d..98b27bd146 100644 --- a/examples/widgets/widgets/CMakeLists.txt +++ b/examples/widgets/widgets/CMakeLists.txt @@ -4,7 +4,6 @@ qt_internal_add_example(analogclock) qt_internal_add_example(calculator) qt_internal_add_example(calendarwidget) -qt_internal_add_example(charactermap) qt_internal_add_example(digitalclock) qt_internal_add_example(groupbox) qt_internal_add_example(icons) diff --git a/examples/widgets/widgets/charactermap/CMakeLists.txt b/examples/widgets/widgets/charactermap/CMakeLists.txt deleted file mode 100644 index f4ab35d614..0000000000 --- a/examples/widgets/widgets/charactermap/CMakeLists.txt +++ /dev/null @@ -1,38 +0,0 @@ -# Copyright (C) 2022 The Qt Company Ltd. -# SPDX-License-Identifier: BSD-3-Clause - -cmake_minimum_required(VERSION 3.16) -project(charactermap LANGUAGES CXX) - -if(NOT DEFINED INSTALL_EXAMPLESDIR) - set(INSTALL_EXAMPLESDIR "examples") -endif() - -set(INSTALL_EXAMPLEDIR "${INSTALL_EXAMPLESDIR}/widgets/widgets/charactermap") - -find_package(Qt6 REQUIRED COMPONENTS Core Gui Widgets) - -qt_standard_project_setup() - -qt_add_executable(charactermap - characterwidget.cpp characterwidget.h - main.cpp - mainwindow.cpp mainwindow.h -) - -set_target_properties(charactermap PROPERTIES - WIN32_EXECUTABLE TRUE - MACOSX_BUNDLE TRUE -) - -target_link_libraries(charactermap PRIVATE - Qt6::Core - Qt6::Gui - Qt6::Widgets -) - -install(TARGETS charactermap - RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}" - BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}" - LIBRARY DESTINATION "${INSTALL_EXAMPLEDIR}" -) diff --git a/examples/widgets/widgets/charactermap/charactermap.pro b/examples/widgets/widgets/charactermap/charactermap.pro deleted file mode 100644 index 373aabca73..0000000000 --- a/examples/widgets/widgets/charactermap/charactermap.pro +++ /dev/null @@ -1,12 +0,0 @@ -QT += widgets -requires(qtConfig(combobox)) - -HEADERS = characterwidget.h \ - mainwindow.h -SOURCES = characterwidget.cpp \ - mainwindow.cpp \ - main.cpp - -# install -target.path = $$[QT_INSTALL_EXAMPLES]/widgets/widgets/charactermap -INSTALLS += target diff --git a/examples/widgets/widgets/charactermap/characterwidget.cpp b/examples/widgets/widgets/charactermap/characterwidget.cpp deleted file mode 100644 index 6287a44e80..0000000000 --- a/examples/widgets/widgets/charactermap/characterwidget.cpp +++ /dev/null @@ -1,145 +0,0 @@ -// Copyright (C) 2016 The Qt Company Ltd. -// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause - -#include "characterwidget.h" - -#include <QFontDatabase> -#include <QMouseEvent> -#include <QPainter> -#include <QToolTip> - -//! [0] -CharacterWidget::CharacterWidget(QWidget *parent) - : QWidget(parent) -{ - calculateSquareSize(); - setMouseTracking(true); -} -//! [0] - -//! [1] -void CharacterWidget::updateFont(const QFont &font) -{ - displayFont.setFamily(font.family()); - calculateSquareSize(); - adjustSize(); - update(); -} -//! [1] - -//! [2] -void CharacterWidget::updateSize(const QString &fontSize) -{ - displayFont.setPointSize(fontSize.toInt()); - calculateSquareSize(); - adjustSize(); - update(); -} -//! [2] - -void CharacterWidget::updateStyle(const QString &fontStyle) -{ - const QFont::StyleStrategy oldStrategy = displayFont.styleStrategy(); - displayFont = QFontDatabase::font(displayFont.family(), fontStyle, displayFont.pointSize()); - displayFont.setStyleStrategy(oldStrategy); - calculateSquareSize(); - adjustSize(); - update(); -} - -void CharacterWidget::updateFontMerging(bool enable) -{ - if (enable) - displayFont.setStyleStrategy(QFont::PreferDefault); - else - displayFont.setStyleStrategy(QFont::NoFontMerging); - adjustSize(); - update(); -} - -void CharacterWidget::calculateSquareSize() -{ - squareSize = qMax(16, 4 + QFontMetrics(displayFont, this).height()); -} - -//! [3] -QSize CharacterWidget::sizeHint() const -{ - return QSize(columns*squareSize, (65536 / columns) * squareSize); -} -//! [3] - -//! [4] -void CharacterWidget::mouseMoveEvent(QMouseEvent *event) -{ - QPoint widgetPosition = mapFromGlobal(event->globalPosition().toPoint()); - uint key = (widgetPosition.y() / squareSize) * columns + widgetPosition.x() / squareSize; - - QString text = QString::fromLatin1("<p>Character: <span style=\"font-size: 24pt; font-family: %1\">").arg(displayFont.family()) - + QChar(key) - + QString::fromLatin1("</span><p>Value: 0x") - + QString::number(key, 16); - QToolTip::showText(event->globalPosition().toPoint(), text, this); -} -//! [4] - -//! [5] -void CharacterWidget::mousePressEvent(QMouseEvent *event) -{ - if (event->button() == Qt::LeftButton) { - lastKey = (event->position().toPoint().y() / squareSize) * columns + event->position().toPoint().x() / squareSize; - if (QChar(lastKey).category() != QChar::Other_NotAssigned) - emit characterSelected(QString(QChar(lastKey))); - update(); - } - else - QWidget::mousePressEvent(event); -} -//! [5] - -//! [6] -void CharacterWidget::paintEvent(QPaintEvent *event) -{ - QPainter painter(this); - painter.fillRect(event->rect(), QBrush(Qt::white)); - painter.setFont(displayFont); -//! [6] - -//! [7] - QRect redrawRect = event->rect(); - int beginRow = redrawRect.top() / squareSize; - int endRow = redrawRect.bottom() / squareSize; - int beginColumn = redrawRect.left() / squareSize; - int endColumn = redrawRect.right() / squareSize; -//! [7] - -//! [8] - painter.setPen(QPen(Qt::gray)); - for (int row = beginRow; row <= endRow; ++row) { - for (int column = beginColumn; column <= endColumn; ++column) { - painter.drawRect(column * squareSize, row * squareSize, squareSize, squareSize); - } -//! [8] //! [9] - } -//! [9] - -//! [10] - QFontMetrics fontMetrics(displayFont); - painter.setPen(QPen(Qt::black)); - for (int row = beginRow; row <= endRow; ++row) { - for (int column = beginColumn; column <= endColumn; ++column) { - int key = row * columns + column; - painter.setClipRect(column * squareSize, row * squareSize, squareSize, squareSize); - - if (key == lastKey) - painter.fillRect(column * squareSize + 1, row * squareSize + 1, - squareSize, squareSize, QBrush(Qt::red)); - - painter.drawText(column * squareSize + (squareSize / 2) - - fontMetrics.horizontalAdvance(QChar(key)) / 2, - row * squareSize + 4 + fontMetrics.ascent(), - QString(QChar(key))); - } - } -} -//! [10] diff --git a/examples/widgets/widgets/charactermap/characterwidget.h b/examples/widgets/widgets/charactermap/characterwidget.h deleted file mode 100644 index b8aa76d111..0000000000 --- a/examples/widgets/widgets/charactermap/characterwidget.h +++ /dev/null @@ -1,50 +0,0 @@ -// Copyright (C) 2016 The Qt Company Ltd. -// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause - -#ifndef CHARACTERWIDGET_H -#define CHARACTERWIDGET_H - -#include <QFont> -#include <QSize> -#include <QString> -#include <QWidget> - -QT_BEGIN_NAMESPACE -class QMouseEvent; -class QPaintEvent; -QT_END_NAMESPACE - -//! [0] -class CharacterWidget : public QWidget -{ - Q_OBJECT - -public: - CharacterWidget(QWidget *parent = nullptr); - QSize sizeHint() const override; - -public slots: - void updateFont(const QFont &font); - void updateSize(const QString &fontSize); - void updateStyle(const QString &fontStyle); - void updateFontMerging(bool enable); - -signals: - void characterSelected(const QString &character); - -protected: - void mouseMoveEvent(QMouseEvent *event) override; - void mousePressEvent(QMouseEvent *event) override; - void paintEvent(QPaintEvent *event) override; - -private: - void calculateSquareSize(); - - QFont displayFont; - int columns = 16; - int lastKey = -1; - int squareSize = 0; -}; -//! [0] - -#endif diff --git a/examples/widgets/widgets/charactermap/main.cpp b/examples/widgets/widgets/charactermap/main.cpp deleted file mode 100644 index 7d7cf3e573..0000000000 --- a/examples/widgets/widgets/charactermap/main.cpp +++ /dev/null @@ -1,14 +0,0 @@ -// Copyright (C) 2016 The Qt Company Ltd. -// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause - -#include <QApplication> - -#include "mainwindow.h" - -int main(int argc, char *argv[]) -{ - QApplication app(argc, argv); - MainWindow window; - window.show(); - return app.exec(); -} diff --git a/examples/widgets/widgets/charactermap/mainwindow.cpp b/examples/widgets/widgets/charactermap/mainwindow.cpp deleted file mode 100644 index fcc00f9642..0000000000 --- a/examples/widgets/widgets/charactermap/mainwindow.cpp +++ /dev/null @@ -1,264 +0,0 @@ -// Copyright (C) 2016 The Qt Company Ltd. -// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause - -#include "mainwindow.h" -#include "characterwidget.h" - -#include <QApplication> -#include <QBoxLayout> -#include <QCheckBox> -#include <QClipboard> -#include <QDialog> -#include <QDialogButtonBox> -#include <QFontComboBox> -#include <QLabel> -#include <QLineEdit> -#include <QMenuBar> -#include <QPlainTextEdit> -#include <QPushButton> -#include <QScreen> -#include <QScrollArea> -#include <QStatusBar> -#include <QTextStream> - -//! [0] -Q_DECLARE_METATYPE(QFontComboBox::FontFilter) - -MainWindow::MainWindow(QWidget *parent) - : QMainWindow(parent) -{ - QMenu *fileMenu = menuBar()->addMenu(tr("File")); - fileMenu->addAction(tr("Quit"), this, &QWidget::close); - QMenu *helpMenu = menuBar()->addMenu(tr("&Help")); - helpMenu->addAction(tr("Show Font Info"), this, &MainWindow::showInfo); - helpMenu->addAction(tr("About &Qt"), qApp, &QApplication::aboutQt); - - QWidget *centralWidget = new QWidget; - - QLabel *filterLabel = new QLabel(tr("Filter:")); - filterCombo = new QComboBox; - filterCombo->addItem(tr("All"), QVariant::fromValue(QFontComboBox::AllFonts)); - filterCombo->addItem(tr("Scalable"), QVariant::fromValue(QFontComboBox::ScalableFonts)); - filterCombo->addItem(tr("Monospaced"), QVariant::fromValue(QFontComboBox::MonospacedFonts)); - filterCombo->addItem(tr("Proportional"), QVariant::fromValue(QFontComboBox::ProportionalFonts)); - filterCombo->setCurrentIndex(0); - connect(filterCombo, &QComboBox::currentIndexChanged, - this, &MainWindow::filterChanged); - - QLabel *fontLabel = new QLabel(tr("Font:")); - fontCombo = new QFontComboBox; - QLabel *sizeLabel = new QLabel(tr("Size:")); - sizeCombo = new QComboBox; - QLabel *styleLabel = new QLabel(tr("Style:")); - styleCombo = new QComboBox; - QLabel *fontMergingLabel = new QLabel(tr("Automatic Font Merging:")); - fontMerging = new QCheckBox; - fontMerging->setChecked(true); - - scrollArea = new QScrollArea; - characterWidget = new CharacterWidget; - scrollArea->setWidget(characterWidget); -//! [0] - -//! [1] - findStyles(fontCombo->currentFont()); -//! [1] - findSizes(fontCombo->currentFont()); - -//! [2] - lineEdit = new QLineEdit; - lineEdit->setClearButtonEnabled(true); -#ifndef QT_NO_CLIPBOARD - QPushButton *clipboardButton = new QPushButton(tr("&To clipboard")); -//! [2] - -#endif - -//! [4] - connect(fontCombo, &QFontComboBox::currentFontChanged, - this, &MainWindow::findStyles); - connect(fontCombo, &QFontComboBox::currentFontChanged, - this, &MainWindow::findSizes); - connect(fontCombo, &QFontComboBox::currentFontChanged, - characterWidget, &CharacterWidget::updateFont); - connect(sizeCombo, &QComboBox::currentTextChanged, - characterWidget, &CharacterWidget::updateSize); - connect(styleCombo, &QComboBox::currentTextChanged, - characterWidget, &CharacterWidget::updateStyle); -//! [4] //! [5] - connect(characterWidget, &CharacterWidget::characterSelected, - this, &MainWindow::insertCharacter); - -#ifndef QT_NO_CLIPBOARD - connect(clipboardButton, &QAbstractButton::clicked, this, &MainWindow::updateClipboard); -#endif -//! [5] - connect(fontMerging, &QAbstractButton::toggled, characterWidget, &CharacterWidget::updateFontMerging); - -//! [6] - QHBoxLayout *controlsLayout = new QHBoxLayout; - controlsLayout->addWidget(filterLabel); - controlsLayout->addWidget(filterCombo, 1); - controlsLayout->addWidget(fontLabel); - controlsLayout->addWidget(fontCombo, 1); - controlsLayout->addWidget(sizeLabel); - controlsLayout->addWidget(sizeCombo, 1); - controlsLayout->addWidget(styleLabel); - controlsLayout->addWidget(styleCombo, 1); - controlsLayout->addWidget(fontMergingLabel); - controlsLayout->addWidget(fontMerging, 1); - controlsLayout->addStretch(1); - - QHBoxLayout *lineLayout = new QHBoxLayout; - lineLayout->addWidget(lineEdit, 1); - lineLayout->addSpacing(12); -#ifndef QT_NO_CLIPBOARD - lineLayout->addWidget(clipboardButton); -#endif - - QVBoxLayout *centralLayout = new QVBoxLayout; - centralLayout->addLayout(controlsLayout); - centralLayout->addWidget(scrollArea, 1); - centralLayout->addSpacing(4); - centralLayout->addLayout(lineLayout); - centralWidget->setLayout(centralLayout); - - setCentralWidget(centralWidget); - setWindowTitle(tr("Character Map")); -} -//! [6] - -//! [7] -void MainWindow::findStyles(const QFont &font) -{ - QString currentItem = styleCombo->currentText(); - styleCombo->clear(); -//! [7] - -//! [8] - const QStringList styles = QFontDatabase::styles(font.family()); - for (const QString &style : styles) - styleCombo->addItem(style); - - int styleIndex = styleCombo->findText(currentItem); - - if (styleIndex == -1) - styleCombo->setCurrentIndex(0); - else - styleCombo->setCurrentIndex(styleIndex); -} -//! [8] - -void MainWindow::filterChanged(int f) -{ - const QFontComboBox::FontFilter filter = - qvariant_cast<QFontComboBox::FontFilter>(filterCombo->itemData(f)); - fontCombo->setFontFilters(filter); - statusBar()->showMessage(tr("%n font(s) found", nullptr, fontCombo->count())); -} - -void MainWindow::findSizes(const QFont &font) -{ - QString currentSize = sizeCombo->currentText(); - - { - const QSignalBlocker blocker(sizeCombo); - // sizeCombo signals are now blocked until end of scope - sizeCombo->clear(); - - if (QFontDatabase::isSmoothlyScalable(font.family(), QFontDatabase::styleString(font))) { - const QList<int> sizes = QFontDatabase::standardSizes(); - for (const int size : sizes) { - sizeCombo->addItem(QVariant(size).toString()); - sizeCombo->setEditable(true); - } - - } else { - const QList<int> sizes = QFontDatabase::smoothSizes(font.family(), QFontDatabase::styleString(font)); - for (const int size : sizes ) { - sizeCombo->addItem(QVariant(size).toString()); - sizeCombo->setEditable(false); - } - } - } - - int sizeIndex = sizeCombo->findText(currentSize); - - if(sizeIndex == -1) - sizeCombo->setCurrentIndex(qMax(0, sizeCombo->count() / 3)); - else - sizeCombo->setCurrentIndex(sizeIndex); -} - -//! [9] -void MainWindow::insertCharacter(const QString &character) -{ - lineEdit->insert(character); -} -//! [9] - -//! [10] -#ifndef QT_NO_CLIPBOARD -void MainWindow::updateClipboard() -{ -//! [11] - QGuiApplication::clipboard()->setText(lineEdit->text(), QClipboard::Clipboard); -//! [11] - QGuiApplication::clipboard()->setText(lineEdit->text(), QClipboard::Selection); -} -#endif - -class FontInfoDialog : public QDialog -{ -public: - explicit FontInfoDialog(QWidget *parent = nullptr); - -private: - QString text() const; -}; - -FontInfoDialog::FontInfoDialog(QWidget *parent) : QDialog(parent) -{ - setWindowFlags(windowFlags() & ~Qt::WindowContextHelpButtonHint); - QVBoxLayout *mainLayout = new QVBoxLayout(this); - QPlainTextEdit *textEdit = new QPlainTextEdit(text(), this); - textEdit->setReadOnly(true); - textEdit->setFont(QFontDatabase::systemFont(QFontDatabase::FixedFont)); - mainLayout->addWidget(textEdit); - QDialogButtonBox *buttonBox = new QDialogButtonBox(QDialogButtonBox::Close, this); - connect(buttonBox, &QDialogButtonBox::rejected, this, &QDialog::reject); - mainLayout->addWidget(buttonBox); -} - -QString FontInfoDialog::text() const -{ - QString text; - QTextStream str(&text); - const QFont defaultFont = QFontDatabase::systemFont(QFontDatabase::GeneralFont); - const QFont fixedFont = QFontDatabase::systemFont(QFontDatabase::FixedFont); - const QFont titleFont = QFontDatabase::systemFont(QFontDatabase::TitleFont); - const QFont smallestReadableFont = QFontDatabase::systemFont(QFontDatabase::SmallestReadableFont); - - str << "Qt " << QT_VERSION_STR << " on " << QGuiApplication::platformName() - << ", " << logicalDpiX() << "DPI"; - if (!qFuzzyCompare(devicePixelRatio(), qreal(1))) - str << ", device pixel ratio: " << devicePixelRatio(); - str << "\n\nDefault font : " << defaultFont.family() << ", " << defaultFont.pointSizeF() << "pt\n" - << "Fixed font : " << fixedFont.family() << ", " << fixedFont.pointSizeF() << "pt\n" - << "Title font : " << titleFont.family() << ", " << titleFont.pointSizeF() << "pt\n" - << "Smallest font: " << smallestReadableFont.family() << ", " << smallestReadableFont.pointSizeF() << "pt\n"; - - return text; -} - -void MainWindow::showInfo() -{ - const QRect screenGeometry = screen()->geometry(); - FontInfoDialog *dialog = new FontInfoDialog(this); - dialog->setWindowTitle(tr("Fonts")); - dialog->setAttribute(Qt::WA_DeleteOnClose); - dialog->resize(screenGeometry.width() / 4, screenGeometry.height() / 4); - dialog->show(); -} - -//! [10] diff --git a/examples/widgets/widgets/charactermap/mainwindow.h b/examples/widgets/widgets/charactermap/mainwindow.h deleted file mode 100644 index b8f3c166eb..0000000000 --- a/examples/widgets/widgets/charactermap/mainwindow.h +++ /dev/null @@ -1,50 +0,0 @@ -// Copyright (C) 2016 The Qt Company Ltd. -// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause - -#ifndef MAINWINDOW_H -#define MAINWINDOW_H - -#include <QMainWindow> -#include <QString> - -QT_BEGIN_NAMESPACE -class QClipboard; -class QComboBox; -class QFontComboBox; -class QLineEdit; -class QScrollArea; -class QCheckBox; -QT_END_NAMESPACE -class CharacterWidget; - -//! [0] -class MainWindow : public QMainWindow -{ - Q_OBJECT - -public: - MainWindow(QWidget *parent = nullptr); - -public slots: - void filterChanged(int); - void findStyles(const QFont &font); - void findSizes(const QFont &font); - void insertCharacter(const QString &character); -#ifndef QT_NO_CLIPBOARD - void updateClipboard(); -#endif - void showInfo(); - -private: - CharacterWidget *characterWidget; - QComboBox *filterCombo; - QComboBox *styleCombo; - QComboBox *sizeCombo; - QFontComboBox *fontCombo; - QLineEdit *lineEdit; - QScrollArea *scrollArea; - QCheckBox *fontMerging; -}; -//! [0] - -#endif diff --git a/examples/widgets/widgets/widgets.pro b/examples/widgets/widgets/widgets.pro index 36d428429c..3b3cce7d11 100644 --- a/examples/widgets/widgets/widgets.pro +++ b/examples/widgets/widgets/widgets.pro @@ -2,7 +2,6 @@ TEMPLATE = subdirs SUBDIRS = analogclock \ calculator \ calendarwidget \ - charactermap \ digitalclock \ groupbox \ icons \ |