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colorswatch.cpp Example File
demos/mainwindow/colorswatch.cpp

 /****************************************************************************
 **
 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
 ** This file is part of the demonstration applications of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:LGPL$
 ** No Commercial Usage
 ** This file contains pre-release code and may not be distributed.
 ** You may use this file in accordance with the terms and conditions
 ** contained in the Technology Preview License Agreement accompanying
 ** this package.
 **
 ** GNU Lesser General Public License Usage
 ** Alternatively, this file may be used under the terms of the GNU Lesser
 ** General Public License version 2.1 as published by the Free Software
 ** Foundation and appearing in the file LICENSE.LGPL included in the
 ** packaging of this file.  Please review the following information to
 ** ensure the GNU Lesser General Public License version 2.1 requirements
 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
 **
 ** In addition, as a special exception, Nokia gives you certain additional
 ** rights.  These rights are described in the Nokia Qt LGPL Exception
 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
 **
 ** If you have questions regarding the use of this file, please contact
 ** Nokia at qt-info@nokia.com.
 **
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 ** $QT_END_LICENSE$
 **
 ****************************************************************************/

 #include "colorswatch.h"

 #include <QAction>
 #include <QtEvents>
 #include <QFrame>
 #include <QMainWindow>
 #include <QMenu>
 #include <QPainter>
 #include <QImage>
 #include <QColor>
 #include <QDialog>
 #include <QGridLayout>
 #include <QSpinBox>
 #include <QLabel>
 #include <QPainterPath>
 #include <QPushButton>
 #include <QHBoxLayout>
 #include <QBitmap>
 #include <QtDebug>

 #undef DEBUG_SIZEHINTS

 QColor bgColorForName(const QString &name)
 {
     if (name == "Black")
         return QColor("#D8D8D8");
     else if (name == "White")
         return QColor("#F1F1F1");
     else if (name == "Red")
         return QColor("#F1D8D8");
     else if (name == "Green")
         return QColor("#D8E4D8");
     else if (name == "Blue")
         return QColor("#D8D8F1");
     else if (name == "Yellow")
         return QColor("#F1F0D8");
     return QColor(name).light(110);
 }

 QColor fgColorForName(const QString &name)
 {
     if (name == "Black")
         return QColor("#6C6C6C");
     else if (name == "White")
         return QColor("#F8F8F8");
     else if (name == "Red")
         return QColor("#F86C6C");
     else if (name == "Green")
         return QColor("#6CB26C");
     else if (name == "Blue")
         return QColor("#6C6CF8");
     else if (name == "Yellow")
         return QColor("#F8F76C");
     return QColor(name);
 }

 class ColorDock : public QFrame
 {
     Q_OBJECT
 public:
     ColorDock(const QString &c, QWidget *parent);

     virtual QSize sizeHint() const;
     virtual QSize minimumSizeHint() const;

     void setCustomSizeHint(const QSize &size);

 public slots:
     void changeSizeHints();

 protected:
     void paintEvent(QPaintEvent *);
     QString color;
     QSize szHint, minSzHint;
 };

 ColorDock::ColorDock(const QString &c, QWidget *parent)
     : QFrame(parent) , color(c)
 {
     QFont font = this->font();
     font.setPointSize(8);
     setFont(font);
     szHint = QSize(-1, -1);
     minSzHint = QSize(125, 75);
 }

 QSize ColorDock::sizeHint() const
 {
     return szHint;
 }

 QSize ColorDock::minimumSizeHint() const
 {
     return minSzHint;
 }

 void ColorDock::paintEvent(QPaintEvent *)
 {
     QPainter p(this);
     p.setRenderHint(QPainter::Antialiasing);
     p.fillRect(rect(), bgColorForName(color));

     p.save();

     extern void render_qt_text(QPainter *, int, int, const QColor &);
     render_qt_text(&p, width(), height(), fgColorForName(color));

     p.restore();

 #ifdef DEBUG_SIZEHINTS
     p.setRenderHint(QPainter::Antialiasing, false);

     QSize sz = size();
     QSize szHint = sizeHint();
     QSize minSzHint = minimumSizeHint();
     QSize maxSz = maximumSize();
     QString text = QString::fromLatin1("sz: %1x%2\nszHint: %3x%4\nminSzHint: %5x%6\n"
                                         "maxSz: %8x%9")
                     .arg(sz.width()).arg(sz.height())
                     .arg(szHint.width()).arg(szHint.height())
                     .arg(minSzHint.width()).arg(minSzHint.height())
                     .arg(maxSz.width()).arg(maxSz.height());

     QRect r = fontMetrics().boundingRect(rect(), Qt::AlignLeft|Qt::AlignTop, text);
     r.adjust(-2, -2, 1, 1);
     p.translate(4, 4);
     QColor bg = Qt::yellow;
     bg.setAlpha(120);
     p.setBrush(bg);
     p.setPen(Qt::black);
     p.drawRect(r);
     p.drawText(rect(), Qt::AlignLeft|Qt::AlignTop, text);
 #endif // DEBUG_SIZEHINTS
 }

 static QSpinBox *createSpinBox(int value, QWidget *parent, int max = 1000)
 {
     QSpinBox *result = new QSpinBox(parent);
     result->setMinimum(-1);
     result->setMaximum(max);
     result->setValue(value);
     return result;
 }

 void ColorDock::changeSizeHints()
 {
     QDialog dialog(this);
     dialog.setWindowTitle(color);

     QVBoxLayout *topLayout = new QVBoxLayout(&dialog);

     QGridLayout *inputLayout = new QGridLayout();
     topLayout->addLayout(inputLayout);

     inputLayout->addWidget(new QLabel(tr("Size Hint:"), &dialog), 0, 0);
     inputLayout->addWidget(new QLabel(tr("Min Size Hint:"), &dialog), 1, 0);
     inputLayout->addWidget(new QLabel(tr("Max Size:"), &dialog), 2, 0);
     inputLayout->addWidget(new QLabel(tr("Dockwgt Max Size:"), &dialog), 3, 0);

     QSpinBox *szHintW = createSpinBox(szHint.width(), &dialog);
     inputLayout->addWidget(szHintW, 0, 1);
     QSpinBox *szHintH = createSpinBox(szHint.height(), &dialog);
     inputLayout->addWidget(szHintH, 0, 2);

     QSpinBox *minSzHintW = createSpinBox(minSzHint.width(), &dialog);
     inputLayout->addWidget(minSzHintW, 1, 1);
     QSpinBox *minSzHintH = createSpinBox(minSzHint.height(), &dialog);
     inputLayout->addWidget(minSzHintH, 1, 2);

     QSize maxSz = maximumSize();
     QSpinBox *maxSzW = createSpinBox(maxSz.width(), &dialog, QWIDGETSIZE_MAX);
     inputLayout->addWidget(maxSzW, 2, 1);
     QSpinBox *maxSzH = createSpinBox(maxSz.height(), &dialog, QWIDGETSIZE_MAX);
     inputLayout->addWidget(maxSzH, 2, 2);

     QSize dwMaxSz = parentWidget()->maximumSize();
     QSpinBox *dwMaxSzW = createSpinBox(dwMaxSz.width(), &dialog, QWIDGETSIZE_MAX);
     inputLayout->addWidget(dwMaxSzW, 3, 1);
     QSpinBox *dwMaxSzH = createSpinBox(dwMaxSz.height(), &dialog, QWIDGETSIZE_MAX);
     inputLayout->addWidget(dwMaxSzH, 3, 2);

     inputLayout->setColumnStretch(1, 1);
     inputLayout->setColumnStretch(2, 1);

     topLayout->addStretch();

     QHBoxLayout *buttonBox = new QHBoxLayout();
     topLayout->addLayout(buttonBox);

     QPushButton *okButton = new QPushButton(tr("Ok"), &dialog);
     QPushButton *cancelButton = new QPushButton(tr("Cancel"), &dialog);
     connect(okButton, SIGNAL(clicked()), &dialog, SLOT(accept()));
     connect(cancelButton, SIGNAL(clicked()), &dialog, SLOT(reject()));
     buttonBox->addStretch();
     buttonBox->addWidget(cancelButton);
     buttonBox->addWidget(okButton);

     if (!dialog.exec())
         return;

     szHint = QSize(szHintW->value(), szHintH->value());
     minSzHint = QSize(minSzHintW->value(), minSzHintH->value());
     maxSz = QSize(maxSzW->value(), maxSzH->value());
     setMaximumSize(maxSz);
     dwMaxSz = QSize(dwMaxSzW->value(), dwMaxSzH->value());
     parentWidget()->setMaximumSize(dwMaxSz);
     updateGeometry();
     update();
 }

 void ColorDock::setCustomSizeHint(const QSize &size)
 {
     szHint = size;
     updateGeometry();
 }

 ColorSwatch::ColorSwatch(const QString &colorName, QWidget *parent, Qt::WindowFlags flags)
     : QDockWidget(parent, flags)
 {
     setObjectName(colorName + QLatin1String(" Dock Widget"));
     setWindowTitle(objectName() + QLatin1String(" [*]"));

     QFrame *swatch = new ColorDock(colorName, this);
     swatch->setFrameStyle(QFrame::Box | QFrame::Sunken);

     setWidget(swatch);

     changeSizeHintsAction = new QAction(tr("Change Size Hints"), this);
     connect(changeSizeHintsAction, SIGNAL(triggered()), swatch, SLOT(changeSizeHints()));

     closableAction = new QAction(tr("Closable"), this);
     closableAction->setCheckable(true);
     connect(closableAction, SIGNAL(triggered(bool)), SLOT(changeClosable(bool)));

     movableAction = new QAction(tr("Movable"), this);
     movableAction->setCheckable(true);
     connect(movableAction, SIGNAL(triggered(bool)), SLOT(changeMovable(bool)));

     floatableAction = new QAction(tr("Floatable"), this);
     floatableAction->setCheckable(true);
     connect(floatableAction, SIGNAL(triggered(bool)), SLOT(changeFloatable(bool)));

     verticalTitleBarAction = new QAction(tr("Vertical title bar"), this);
     verticalTitleBarAction->setCheckable(true);
     connect(verticalTitleBarAction, SIGNAL(triggered(bool)),
             SLOT(changeVerticalTitleBar(bool)));

     floatingAction = new QAction(tr("Floating"), this);
     floatingAction->setCheckable(true);
     connect(floatingAction, SIGNAL(triggered(bool)), SLOT(changeFloating(bool)));

     allowedAreasActions = new QActionGroup(this);
     allowedAreasActions->setExclusive(false);

     allowLeftAction = new QAction(tr("Allow on Left"), this);
     allowLeftAction->setCheckable(true);
     connect(allowLeftAction, SIGNAL(triggered(bool)), SLOT(allowLeft(bool)));

     allowRightAction = new QAction(tr("Allow on Right"), this);
     allowRightAction->setCheckable(true);
     connect(allowRightAction, SIGNAL(triggered(bool)), SLOT(allowRight(bool)));

     allowTopAction = new QAction(tr("Allow on Top"), this);
     allowTopAction->setCheckable(true);
     connect(allowTopAction, SIGNAL(triggered(bool)), SLOT(allowTop(bool)));

     allowBottomAction = new QAction(tr("Allow on Bottom"), this);
     allowBottomAction->setCheckable(true);
     connect(allowBottomAction, SIGNAL(triggered(bool)), SLOT(allowBottom(bool)));

     allowedAreasActions->addAction(allowLeftAction);
     allowedAreasActions->addAction(allowRightAction);
     allowedAreasActions->addAction(allowTopAction);
     allowedAreasActions->addAction(allowBottomAction);

     areaActions = new QActionGroup(this);
     areaActions->setExclusive(true);

     leftAction = new QAction(tr("Place on Left") , this);
     leftAction->setCheckable(true);
     connect(leftAction, SIGNAL(triggered(bool)), SLOT(placeLeft(bool)));

     rightAction = new QAction(tr("Place on Right") , this);
     rightAction->setCheckable(true);
     connect(rightAction, SIGNAL(triggered(bool)), SLOT(placeRight(bool)));

     topAction = new QAction(tr("Place on Top") , this);
     topAction->setCheckable(true);
     connect(topAction, SIGNAL(triggered(bool)), SLOT(placeTop(bool)));

     bottomAction = new QAction(tr("Place on Bottom") , this);
     bottomAction->setCheckable(true);
     connect(bottomAction, SIGNAL(triggered(bool)), SLOT(placeBottom(bool)));

     areaActions->addAction(leftAction);
     areaActions->addAction(rightAction);
     areaActions->addAction(topAction);
     areaActions->addAction(bottomAction);

     connect(movableAction, SIGNAL(triggered(bool)), areaActions, SLOT(setEnabled(bool)));

     connect(movableAction, SIGNAL(triggered(bool)), allowedAreasActions, SLOT(setEnabled(bool)));

     connect(floatableAction, SIGNAL(triggered(bool)), floatingAction, SLOT(setEnabled(bool)));

     connect(floatingAction, SIGNAL(triggered(bool)), floatableAction, SLOT(setDisabled(bool)));
     connect(movableAction, SIGNAL(triggered(bool)), floatableAction, SLOT(setEnabled(bool)));

     tabMenu = new QMenu(this);
     tabMenu->setTitle(tr("Tab into"));
     connect(tabMenu, SIGNAL(triggered(QAction*)), this, SLOT(tabInto(QAction*)));

     splitHMenu = new QMenu(this);
     splitHMenu->setTitle(tr("Split horizontally into"));
     connect(splitHMenu, SIGNAL(triggered(QAction*)), this, SLOT(splitInto(QAction*)));

     splitVMenu = new QMenu(this);
     splitVMenu->setTitle(tr("Split vertically into"));
     connect(splitVMenu, SIGNAL(triggered(QAction*)), this, SLOT(splitInto(QAction*)));

     windowModifiedAction = new QAction(tr("Modified"), this);
     windowModifiedAction->setCheckable(true);
     windowModifiedAction->setChecked(false);
     connect(windowModifiedAction, SIGNAL(toggled(bool)), this, SLOT(setWindowModified(bool)));

     menu = new QMenu(colorName, this);
     menu->addAction(toggleViewAction());
     QAction *action = menu->addAction(tr("Raise"));
     connect(action, SIGNAL(triggered()), this, SLOT(raise()));
     menu->addAction(changeSizeHintsAction);
     menu->addSeparator();
     menu->addAction(closableAction);
     menu->addAction(movableAction);
     menu->addAction(floatableAction);
     menu->addAction(floatingAction);
     menu->addAction(verticalTitleBarAction);
     menu->addSeparator();
     menu->addActions(allowedAreasActions->actions());
     menu->addSeparator();
     menu->addActions(areaActions->actions());
     menu->addSeparator();
     menu->addMenu(splitHMenu);
     menu->addMenu(splitVMenu);
     menu->addMenu(tabMenu);
     menu->addSeparator();
     menu->addAction(windowModifiedAction);

     connect(menu, SIGNAL(aboutToShow()), this, SLOT(updateContextMenu()));

     if(colorName == "Black") {
         leftAction->setShortcut(Qt::CTRL|Qt::Key_W);
         rightAction->setShortcut(Qt::CTRL|Qt::Key_E);
         toggleViewAction()->setShortcut(Qt::CTRL|Qt::Key_R);
     }
 }

 void ColorSwatch::updateContextMenu()
 {
     QMainWindow *mainWindow = qobject_cast<QMainWindow *>(parentWidget());
     const Qt::DockWidgetArea area = mainWindow->dockWidgetArea(this);
     const Qt::DockWidgetAreas areas = allowedAreas();

     closableAction->setChecked(features() & QDockWidget::DockWidgetClosable);
     if (windowType() == Qt::Drawer) {
         floatableAction->setEnabled(false);
         floatingAction->setEnabled(false);
         movableAction->setEnabled(false);
         verticalTitleBarAction->setChecked(false);
     } else {
         floatableAction->setChecked(features() & QDockWidget::DockWidgetFloatable);
         floatingAction->setChecked(isWindow());
         // done after floating, to get 'floatable' correctly initialized
         movableAction->setChecked(features() & QDockWidget::DockWidgetMovable);
         verticalTitleBarAction
             ->setChecked(features() & QDockWidget::DockWidgetVerticalTitleBar);
     }

     allowLeftAction->setChecked(isAreaAllowed(Qt::LeftDockWidgetArea));
     allowRightAction->setChecked(isAreaAllowed(Qt::RightDockWidgetArea));
     allowTopAction->setChecked(isAreaAllowed(Qt::TopDockWidgetArea));
     allowBottomAction->setChecked(isAreaAllowed(Qt::BottomDockWidgetArea));

     if (allowedAreasActions->isEnabled()) {
         allowLeftAction->setEnabled(area != Qt::LeftDockWidgetArea);
         allowRightAction->setEnabled(area != Qt::RightDockWidgetArea);
         allowTopAction->setEnabled(area != Qt::TopDockWidgetArea);
         allowBottomAction->setEnabled(area != Qt::BottomDockWidgetArea);
     }

     leftAction->blockSignals(true);
     rightAction->blockSignals(true);
     topAction->blockSignals(true);
     bottomAction->blockSignals(true);

     leftAction->setChecked(area == Qt::LeftDockWidgetArea);
     rightAction->setChecked(area == Qt::RightDockWidgetArea);
     topAction->setChecked(area == Qt::TopDockWidgetArea);
     bottomAction->setChecked(area == Qt::BottomDockWidgetArea);

     leftAction->blockSignals(false);
     rightAction->blockSignals(false);
     topAction->blockSignals(false);
     bottomAction->blockSignals(false);

     if (areaActions->isEnabled()) {
         leftAction->setEnabled(areas & Qt::LeftDockWidgetArea);
         rightAction->setEnabled(areas & Qt::RightDockWidgetArea);
         topAction->setEnabled(areas & Qt::TopDockWidgetArea);
         bottomAction->setEnabled(areas & Qt::BottomDockWidgetArea);
     }

     tabMenu->clear();
     splitHMenu->clear();
     splitVMenu->clear();
     QList<ColorSwatch*> dock_list = qFindChildren<ColorSwatch*>(mainWindow);
     foreach (ColorSwatch *dock, dock_list) {
 //        if (!dock->isVisible() || dock->isFloating())
 //            continue;
         tabMenu->addAction(dock->objectName());
         splitHMenu->addAction(dock->objectName());
         splitVMenu->addAction(dock->objectName());
     }
 }

 void ColorSwatch::splitInto(QAction *action)
 {
     QMainWindow *mainWindow = qobject_cast<QMainWindow *>(parentWidget());
     QList<ColorSwatch*> dock_list = qFindChildren<ColorSwatch*>(mainWindow);
     ColorSwatch *target = 0;
     foreach (ColorSwatch *dock, dock_list) {
         if (action->text() == dock->objectName()) {
             target = dock;
             break;
         }
     }
     if (target == 0)
         return;

     Qt::Orientation o = action->parent() == splitHMenu
                         ? Qt::Horizontal : Qt::Vertical;
     mainWindow->splitDockWidget(target, this, o);
 }

 void ColorSwatch::tabInto(QAction *action)
 {
     QMainWindow *mainWindow = qobject_cast<QMainWindow *>(parentWidget());
     QList<ColorSwatch*> dock_list = qFindChildren<ColorSwatch*>(mainWindow);
     ColorSwatch *target = 0;
     foreach (ColorSwatch *dock, dock_list) {
         if (action->text() == dock->objectName()) {
             target = dock;
             break;
         }
     }
     if (target == 0)
         return;

     mainWindow->tabifyDockWidget(target, this);
 }

 void ColorSwatch::contextMenuEvent(QContextMenuEvent *event)
 {
     event->accept();
     menu->exec(event->globalPos());
 }

 void ColorSwatch::resizeEvent(QResizeEvent *e)
 {
     if (BlueTitleBar *btb = qobject_cast<BlueTitleBar*>(titleBarWidget()))
         btb->updateMask();

     QDockWidget::resizeEvent(e);
 }

 void ColorSwatch::allow(Qt::DockWidgetArea area, bool a)
 {
     Qt::DockWidgetAreas areas = allowedAreas();
     areas = a ? areas | area : areas & ~area;
     setAllowedAreas(areas);

     if (areaActions->isEnabled()) {
         leftAction->setEnabled(areas & Qt::LeftDockWidgetArea);
         rightAction->setEnabled(areas & Qt::RightDockWidgetArea);
         topAction->setEnabled(areas & Qt::TopDockWidgetArea);
         bottomAction->setEnabled(areas & Qt::BottomDockWidgetArea);
     }
 }

 void ColorSwatch::place(Qt::DockWidgetArea area, bool p)
 {
     if (!p) return;

     QMainWindow *mainWindow = qobject_cast<QMainWindow *>(parentWidget());
     mainWindow->addDockWidget(area, this);

     if (allowedAreasActions->isEnabled()) {
         allowLeftAction->setEnabled(area != Qt::LeftDockWidgetArea);
         allowRightAction->setEnabled(area != Qt::RightDockWidgetArea);
         allowTopAction->setEnabled(area != Qt::TopDockWidgetArea);
         allowBottomAction->setEnabled(area != Qt::BottomDockWidgetArea);
     }
 }

 void ColorSwatch::setCustomSizeHint(const QSize &size)
 {
     if (ColorDock *dock = qobject_cast<ColorDock*>(widget()))
         dock->setCustomSizeHint(size);
 }

 void ColorSwatch::changeClosable(bool on)
 { setFeatures(on ? features() | DockWidgetClosable : features() & ~DockWidgetClosable); }

 void ColorSwatch::changeMovable(bool on)
 { setFeatures(on ? features() | DockWidgetMovable : features() & ~DockWidgetMovable); }

 void ColorSwatch::changeFloatable(bool on)
 { setFeatures(on ? features() | DockWidgetFloatable : features() & ~DockWidgetFloatable); }

 void ColorSwatch::changeFloating(bool floating)
 { setFloating(floating); }

 void ColorSwatch::allowLeft(bool a)
 { allow(Qt::LeftDockWidgetArea, a); }

 void ColorSwatch::allowRight(bool a)
 { allow(Qt::RightDockWidgetArea, a); }

 void ColorSwatch::allowTop(bool a)
 { allow(Qt::TopDockWidgetArea, a); }

 void ColorSwatch::allowBottom(bool a)
 { allow(Qt::BottomDockWidgetArea, a); }

 void ColorSwatch::placeLeft(bool p)
 { place(Qt::LeftDockWidgetArea, p); }

 void ColorSwatch::placeRight(bool p)
 { place(Qt::RightDockWidgetArea, p); }

 void ColorSwatch::placeTop(bool p)
 { place(Qt::TopDockWidgetArea, p); }

 void ColorSwatch::placeBottom(bool p)
 { place(Qt::BottomDockWidgetArea, p); }

 void ColorSwatch::changeVerticalTitleBar(bool on)
 {
     setFeatures(on ? features() | DockWidgetVerticalTitleBar
                     : features() & ~DockWidgetVerticalTitleBar);
 }

 QSize BlueTitleBar::minimumSizeHint() const
 {
     QDockWidget *dw = qobject_cast<QDockWidget*>(parentWidget());
     Q_ASSERT(dw != 0);
     QSize result(leftPm.width() + rightPm.width(), centerPm.height());
     if (dw->features() & QDockWidget::DockWidgetVerticalTitleBar)
         result.transpose();
     return result;
 }

 BlueTitleBar::BlueTitleBar(QWidget *parent)
     : QWidget(parent)
 {
     leftPm = QPixmap(":/res/titlebarLeft.png");
     centerPm = QPixmap(":/res/titlebarCenter.png");
     rightPm = QPixmap(":/res/titlebarRight.png");
 }

 void BlueTitleBar::paintEvent(QPaintEvent*)
 {
     QPainter painter(this);
     QRect rect = this->rect();

     QDockWidget *dw = qobject_cast<QDockWidget*>(parentWidget());
     Q_ASSERT(dw != 0);

     if (dw->features() & QDockWidget::DockWidgetVerticalTitleBar) {
         QSize s = rect.size();
         s.transpose();
         rect.setSize(s);

         painter.translate(rect.left(), rect.top() + rect.width());
         painter.rotate(-90);
         painter.translate(-rect.left(), -rect.top());
     }

     painter.drawPixmap(rect.topLeft(), leftPm);
     painter.drawPixmap(rect.topRight() - QPoint(rightPm.width() - 1, 0), rightPm);
     QBrush brush(centerPm);
     painter.fillRect(rect.left() + leftPm.width(), rect.top(),
                         rect.width() - leftPm.width() - rightPm.width(),
                         centerPm.height(), centerPm);
 }

 void BlueTitleBar::mousePressEvent(QMouseEvent *event)
 {
     QPoint pos = event->pos();

     QRect rect = this->rect();

     QDockWidget *dw = qobject_cast<QDockWidget*>(parentWidget());
     Q_ASSERT(dw != 0);

     if (dw->features() & QDockWidget::DockWidgetVerticalTitleBar) {
         QPoint p = pos;
         pos.setX(rect.left() + rect.bottom() - p.y());
         pos.setY(rect.top() + p.x() - rect.left());

         QSize s = rect.size();
         s.transpose();
         rect.setSize(s);
     }

     const int buttonRight = 7;
     const int buttonWidth = 20;
     int right = rect.right() - pos.x();
     int button = (right - buttonRight)/buttonWidth;
     switch (button) {
         case 0:
             event->accept();
             dw->close();
             break;
         case 1:
             event->accept();
             dw->setFloating(!dw->isFloating());
             break;
         case 2: {
             event->accept();
             QDockWidget::DockWidgetFeatures features = dw->features();
             if (features & QDockWidget::DockWidgetVerticalTitleBar)
                 features &= ~QDockWidget::DockWidgetVerticalTitleBar;
             else
                 features |= QDockWidget::DockWidgetVerticalTitleBar;
             dw->setFeatures(features);
             break;
         }
         default:
             event->ignore();
             break;
     }
 }

 void BlueTitleBar::updateMask()
 {
     QDockWidget *dw = qobject_cast<QDockWidget*>(parent());
     Q_ASSERT(dw != 0);

     QRect rect = dw->rect();
     QPixmap bitmap(dw->size());

     {
         QPainter painter(&bitmap);

         ///initialize to transparent
         painter.fillRect(rect, Qt::color0);

         QRect contents = rect;
         contents.setTopLeft(geometry().bottomLeft());
         contents.setRight(geometry().right());
         contents.setBottom(contents.bottom()-y());
         painter.fillRect(contents, Qt::color1);

         //let's pait the titlebar

         QRect titleRect = this->geometry();

         if (dw->features() & QDockWidget::DockWidgetVerticalTitleBar) {
             QSize s = rect.size();
             s.transpose();
             rect.setSize(s);

             QSize s2 = size();
             s2.transpose();
             titleRect.setSize(s2);

             painter.translate(rect.left(), rect.top() + rect.width());
             painter.rotate(-90);
             painter.translate(-rect.left(), -rect.top());
         }

         contents.setTopLeft(titleRect.bottomLeft());
         contents.setRight(titleRect.right());
         contents.setBottom(rect.bottom()-y());

         QRect rect = titleRect;

         painter.drawPixmap(rect.topLeft(), leftPm.mask());
         painter.fillRect(rect.left() + leftPm.width(), rect.top(),
             rect.width() - leftPm.width() - rightPm.width(),
             centerPm.height(), Qt::color1);
         painter.drawPixmap(rect.topRight() - QPoint(rightPm.width() - 1, 0), rightPm.mask());

         painter.fillRect(contents, Qt::color1);
     }

     dw->setMask(bitmap);
 }

 #include "colorswatch.moc"

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Créer des applications avec un style Metro avec Qt, exemples en QML et C++, un article de Digia Qt traduit par Thibaut Cuvelier

Le blog Digia est l'endroit privilégié pour la communication sur l'édition commerciale de Qt, où des réponses publiques sont apportées aux questions les plus posées au support. Lire l'article.

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