colorswatch.cpp Example File

mainwindows/mainwindow/colorswatch.cpp
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 #include "colorswatch.h"

 #include <QAction>
 #include <QtEvents>
 #include <QFrame>
 #include <QMainWindow>
 #include <QMenu>
 #include <QPainter>
 #include <QImage>
 #include <QColor>
 #include <QDialog>
 #include <QDialogButtonBox>
 #include <QGridLayout>
 #include <QSignalBlocker>
 #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");
     if (name == "White")
         return QColor("#F1F1F1");
     if (name == "Red")
         return QColor("#F1D8D8");
     if (name == "Green")
         return QColor("#D8E4D8");
     if (name == "Blue")
         return QColor("#D8D8F1");
     if (name == "Yellow")
         return QColor("#F1F0D8");
     return QColor(name).light(110);
 }

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

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

     QSize sizeHint() const override { return szHint; }
     QSize minimumSizeHint() const override { return minSzHint; }

     void setCustomSizeHint(const QSize &size);

 public slots:
     void changeSizeHints();

 protected:
     void paintEvent(QPaintEvent *) override;

 private:
     const QString color;
     QSize szHint;
     QSize minSzHint;
 };

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

 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.setWindowFlags(dialog.windowFlags() & ~Qt::WindowContextHelpButtonHint);
     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("Dock Widget 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();

     QDialogButtonBox *buttonBox = new QDialogButtonBox(QDialogButtonBox::Ok | QDialogButtonBox::Cancel, this);
     connect(buttonBox, &QDialogButtonBox::rejected, &dialog, &QDialog::reject);
     connect(buttonBox, &QDialogButtonBox::accepted, &dialog, &QDialog::reject);

     topLayout->addWidget(buttonBox);

     if (dialog.exec() != QDialog::Accepted)
         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)
 {
     if (szHint != size) {
         szHint = size;
         updateGeometry();
     }
 }

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

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

     setWidget(swatch);

     closableAction = new QAction(tr("Closable"), this);
     closableAction->setCheckable(true);
     connect(closableAction, &QAction::triggered, this, &ColorSwatch::changeClosable);

     movableAction = new QAction(tr("Movable"), this);
     movableAction->setCheckable(true);
     connect(movableAction, &QAction::triggered, this, &ColorSwatch::changeMovable);

     floatableAction = new QAction(tr("Floatable"), this);
     floatableAction->setCheckable(true);
     connect(floatableAction, &QAction::triggered, this, &ColorSwatch::changeFloatable);

     verticalTitleBarAction = new QAction(tr("Vertical title bar"), this);
     verticalTitleBarAction->setCheckable(true);
     connect(verticalTitleBarAction, &QAction::triggered,
             this, &ColorSwatch::changeVerticalTitleBar);

     floatingAction = new QAction(tr("Floating"), this);
     floatingAction->setCheckable(true);
     connect(floatingAction, &QAction::triggered, this, &ColorSwatch::changeFloating);

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

     allowLeftAction = new QAction(tr("Allow on Left"), this);
     allowLeftAction->setCheckable(true);
     connect(allowLeftAction, &QAction::triggered, this, &ColorSwatch::allowLeft);

     allowRightAction = new QAction(tr("Allow on Right"), this);
     allowRightAction->setCheckable(true);
     connect(allowRightAction, &QAction::triggered, this, &ColorSwatch::allowRight);

     allowTopAction = new QAction(tr("Allow on Top"), this);
     allowTopAction->setCheckable(true);
     connect(allowTopAction, &QAction::triggered, this, &ColorSwatch::allowTop);

     allowBottomAction = new QAction(tr("Allow on Bottom"), this);
     allowBottomAction->setCheckable(true);
     connect(allowBottomAction, &QAction::triggered, this, &ColorSwatch::allowBottom);

     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, &QAction::triggered, this, &ColorSwatch::placeLeft);

     rightAction = new QAction(tr("Place on Right") , this);
     rightAction->setCheckable(true);
     connect(rightAction, &QAction::triggered, this, &ColorSwatch::placeRight);

     topAction = new QAction(tr("Place on Top") , this);
     topAction->setCheckable(true);
     connect(topAction, &QAction::triggered, this, &ColorSwatch::placeTop);

     bottomAction = new QAction(tr("Place on Bottom") , this);
     bottomAction->setCheckable(true);
     connect(bottomAction, &QAction::triggered, this, &ColorSwatch::placeBottom);

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

     connect(movableAction, &QAction::triggered, areaActions, &QActionGroup::setEnabled);

     connect(movableAction, &QAction::triggered, allowedAreasActions, &QActionGroup::setEnabled);

     connect(floatableAction, &QAction::triggered, floatingAction, &QAction::setEnabled);

     connect(floatingAction, &QAction::triggered, floatableAction, &QAction::setDisabled);
     connect(movableAction, &QAction::triggered, floatableAction, &QAction::setEnabled);

     tabMenu = new QMenu(this);
     tabMenu->setTitle(tr("Tab into"));
     connect(tabMenu, &QMenu::triggered, this, &ColorSwatch::tabInto);

     splitHMenu = new QMenu(this);
     splitHMenu->setTitle(tr("Split horizontally into"));
     connect(splitHMenu, &QMenu::triggered, this, &ColorSwatch::splitInto);

     splitVMenu = new QMenu(this);
     splitVMenu->setTitle(tr("Split vertically into"));
     connect(splitVMenu, &QMenu::triggered, this, &ColorSwatch::splitInto);

     QAction *windowModifiedAction = new QAction(tr("Modified"), this);
     windowModifiedAction->setCheckable(true);
     windowModifiedAction->setChecked(false);
     connect(windowModifiedAction, &QAction::toggled, this, &QWidget::setWindowModified);

     menu = new QMenu(colorName, this);
     menu->addAction(toggleViewAction());
     menu->addAction(tr("Raise"), this, &QWidget::raise);
     menu->addAction(tr("Change Size Hints..."), swatch, &ColorDock::changeSizeHints);

     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, &QMenu::aboutToShow, this, &ColorSwatch::updateContextMenu);

     if (colorName == QLatin1String("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()
 {
     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);
     }

     {
         const QSignalBlocker blocker(leftAction);
         leftAction->setChecked(area == Qt::LeftDockWidgetArea);
     }
     {
         const QSignalBlocker blocker(rightAction);
         rightAction->setChecked(area == Qt::RightDockWidgetArea);
     }
     {
         const QSignalBlocker blocker(topAction);
         topAction->setChecked(area == Qt::TopDockWidgetArea);
     }
     {
         const QSignalBlocker blocker(bottomAction);
         bottomAction->setChecked(area == Qt::BottomDockWidgetArea);
     }

     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 = mainWindow->findChildren<ColorSwatch*>();
     foreach (ColorSwatch *dock, dock_list) {
         tabMenu->addAction(dock->objectName());
         splitHMenu->addAction(dock->objectName());
         splitVMenu->addAction(dock->objectName());
     }
 }

 static ColorSwatch *findByName(const QMainWindow *mainWindow, const QString &name)
 {
     foreach (ColorSwatch *dock, mainWindow->findChildren<ColorSwatch*>()) {
         if (name == dock->objectName())
             return dock;
     }
     return nullptr;
 }

 void ColorSwatch::splitInto(QAction *action)
 {
     ColorSwatch *target = findByName(mainWindow, action->text());
     if (!target)
         return;

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

 void ColorSwatch::tabInto(QAction *action)
 {
     if (ColorSwatch *target = findByName(mainWindow, action->text()))
         mainWindow->tabifyDockWidget(target, this);
 }

 #ifndef QT_NO_CONTEXTMENU
 void ColorSwatch::contextMenuEvent(QContextMenuEvent *event)
 {
     event->accept();
     menu->exec(event->globalPos());
 }
 #endif // QT_NO_CONTEXTMENU

 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;

     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::mouseReleaseEvent(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 paint 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"