qwidget.cpp File Reference

#include "qapplication.h"
#include "qapplication_p.h"
#include "qbrush.h"
#include "qcursor.h"
#include "qdesktopwidget.h"
#include "qevent.h"
#include "qhash.h"
#include "qlayout.h"
#include "qmenu.h"
#include "qmetaobject.h"
#include "qpixmap.h"
#include "qpointer.h"
#include "qstack.h"
#include "qstyle.h"
#include "qstylefactory.h"
#include "qvariant.h"
#include "qwidget.h"
#include "qstyleoption.h"
#include "qaccessible.h"
#include "qt_windows.h"
#include "qt_mac_p.h"
#include "qt_cocoa_helpers_mac_p.h"
#include "qmainwindow.h"
#include "qtoolbar.h"
#include <private/qmainwindowlayout_p.h>
#include "qwsdisplay_qws.h"
#include "qwsmanager_qws.h"
#include "qpaintengine.h"
#include "private/qwindowsurface_qws_p.h"
#include "qpainter.h"
#include "qtooltip.h"
#include "qwhatsthis.h"
#include "qdebug.h"
#include "private/qstylesheetstyle_p.h"
#include "private/qstyle_p.h"
#include "private/qinputcontext_p.h"
#include "qfileinfo.h"
#include "private/qsoftkeymanager_p.h"
#include <private/qwininputcontext_p.h>
#include <private/qpaintengine_x11_p.h>
#include "qx11info_x11.h"
#include <private/qgraphicseffect_p.h>
#include <private/qwindowsurface_p.h>
#include <private/qbackingstore_p.h>
#include <private/qpaintengine_mac_p.h>
#include <private/qpaintengine_raster_p.h>
#include "qwidget_p.h"
#include "qaction_p.h"
#include "qlayout_p.h"
#include "QtGui/qgraphicsproxywidget.h"
#include "QtGui/qgraphicsscene.h"
#include "private/qgraphicsproxywidget_p.h"
#include "QtGui/qabstractscrollarea.h"
#include "private/qabstractscrollarea_p.h"
#include "private/qevent_p.h"
#include "private/qgraphicssystem_p.h"
#include "private/qgesturemanager_p.h"
#include "moc_qwidget.cpp"

Go to the source code of this file.

Classes
class	QDummyWindowSurface
struct	QWidgetExceptionCleaner

Macros
#define	QT_NO_PAINT_DEBUG

Functions
static QString	constructWindowTitleFromFilePath (const QString &filePath)
static void	fillRegion (QPainter *painter, const QRegion &rgn, const QBrush &brush)
static bool	hasBackingStoreSupport ()
static bool	qRectIntersects (const QRect &r1, const QRect &r2)
QRegion	qt_dirtyRegion (QWidget *widget)
Q_GUI_EXPORT QWidgetData *	qt_qwidget_data (QWidget *widget)
bool	qt_sendSpontaneousEvent (QObject *, QEvent *)
QString	qt_setWindowTitle_helperHelper (const QString &title, const QWidget *widget)
	Returns a modified window title with the [*] place holder replaced according to the rules described in QWidget::setWindowTitle. More...
Q_GUI_EXPORT QWidgetPrivate *	qt_widget_private (QWidget *widget)
Q_GUI_EXPORT void	qt_x11_set_global_double_buffer (bool enable)
static void	setAttribute_internal (Qt::WidgetAttribute attribute, bool on, QWidgetData *data, QWidgetPrivate *d)
void	setDisabledStyle (QWidget *w, bool setStyle)

Variables
QPointer< QWidget >	qt_button_down
QDesktopWidget *	qt_desktopWidget

Macro Definition Documentation

QT_NO_PAINT_DEBUG

#define QT_NO_PAINT_DEBUG

Definition at line 179 of file qwidget.cpp.

Function Documentation

constructWindowTitleFromFilePath()

static QString constructWindowTitleFromFilePath ( const QString &  filePath )

static

Definition at line 6185 of file qwidget.cpp.

{
    QFileInfo fi(filePath);
    QString windowTitle = fi.fileName() + QLatin1String("[*]");
#ifndef Q_WS_MAC
    QString appName = QApplication::applicationName();
    if (!appName.isEmpty())
        windowTitle += QLatin1Char(' ') + QChar(0x2014) + QLatin1Char(' ') + appName;
#endif
    return windowTitle;
}

fillRegion()

static void fillRegion ( QPainter *  painter, const QRegion &  rgn, const QBrush &  brush  )

inlinestatic

Definition at line 2392 of file qwidget.cpp.

Referenced by QWidgetPrivate::paintBackground(), and QVGPaintEngine::vgPrivate().

{
    Q_ASSERT(painter);

    if (brush.style() == Qt::TexturePattern) {
#ifdef Q_WS_MAC
        // Optimize pattern filling on mac by using HITheme directly
        // when filling with the standard widget background.
        // Defined in qmacstyle_mac.cpp
        extern void qt_mac_fill_background(QPainter *painter, const QRegion &rgn, const QBrush &brush);
        qt_mac_fill_background(painter, rgn, brush);
#else
#if !defined(QT_NO_STYLE_S60)
        // Defined in qs60style.cpp
        extern bool qt_s60_fill_background(QPainter *painter, const QRegion &rgn, const QBrush &brush);
        if (!qt_s60_fill_background(painter, rgn, brush))
#endif // !defined(QT_NO_STYLE_S60)
        {
            const QRect rect(rgn.boundingRect());
            painter->setClipRegion(rgn);
            painter->drawTiledPixmap(rect, brush.texture(), rect.topLeft());
        }
#endif // Q_WS_MAC

    } else if (brush.gradient()
               && brush.gradient()->coordinateMode() == QGradient::ObjectBoundingMode) {
        painter->save();
        painter->setClipRegion(rgn);
        painter->fillRect(0, 0, painter->device()->width(), painter->device()->height(), brush);
        painter->restore();
    } else {
        const QVector<QRect> &rects = rgn.rects();
        for (int i = 0; i < rects.size(); ++i)
            painter->fillRect(rects.at(i), brush);
    }
}

hasBackingStoreSupport()

static bool hasBackingStoreSupport ( )

inlinestatic

Definition at line 169 of file qwidget.cpp.

Referenced by QWidget::create(), QWidget::repaint(), and QWidget::update().

{
#ifdef Q_WS_MAC
    return QApplicationPrivate::graphicsSystem() != 0;
#else
    return true;
#endif
}

qRectIntersects()

static bool qRectIntersects ( const QRect &  r1, const QRect &  r2  )

inlinestatic

Definition at line 163 of file qwidget.cpp.

Referenced by QWidgetPrivate::clipRegion(), QWidgetPrivate::isOverlapped(), QWidgetPrivate::paintSiblingsRecursive(), and QWidgetPrivate::subtractOpaqueSiblings().

{
    return (qMax(r1.left(), r2.left()) <= qMin(r1.right(), r2.right()) &&
            qMax(r1.top(), r2.top()) <= qMin(r1.bottom(), r2.bottom()));
}

qt_dirtyRegion()

QRegion qt_dirtyRegion

(

QWidget *

widget

)

Definition at line 1111 of file qwidget.cpp.

Referenced by QWidgetBackingStore::hasStaticContents(), and QETWidget::translatePaintEvent().

{
    if (!widget)
        return QRegion();

    QWidgetBackingStore *bs = qt_widget_private(widget)->maybeBackingStore();
    if (!bs)
        return QRegion();

    return bs->dirtyRegion(widget);
}

qt_qwidget_data()

Q_GUI_EXPORT QWidgetData* qt_qwidget_data

(

QWidget *

widget

)

Definition at line 12915 of file qwidget.cpp.

Referenced by QXcbWindowSurface::flush(), QX11WindowSurface::flush(), QGLWindowSurface::flush(), QRasterWindowSurface::flush(), QWindowSystemInterface::handleEnterEvent(), QWindowSystemInterface::handleExtendedKeyEvent(), QWindowSystemInterface::handleGeometryChange(), QWindowSystemInterface::handleKeyEvent(), QWindowSystemInterface::handleLeaveEvent(), QWindowSystemInterface::handleMouseEvent(), and QWindowSystemInterface::handleWheelEvent().

{
    return widget->data;
}

qt_sendSpontaneousEvent()

bool qt_sendSpontaneousEvent	(	QObject *	,
		QEvent *
	)

Definition at line 5779 of file qapplication.cpp.

{
    return QCoreApplication::sendSpontaneousEvent(receiver, event);
}

qt_setWindowTitle_helperHelper()

QString qt_setWindowTitle_helperHelper	(	const QString &	title,
		const QWidget *	widget
	)

Returns a modified window title with the [*] place holder replaced according to the rules described in QWidget::setWindowTitle.

This function assumes that "[*]" can be quoted by another "[*]", so it will replace two place holders by one and a single last one by either "*" or nothing depending on the modified flag.

Warning

This function is not part of the public interface.

Definition at line 6240 of file qwidget.cpp.

Referenced by QDockWidget::changeEvent(), QMdiSubWindowPrivate::getOperation(), QAccessibleWidget::indexOfChild(), QDockWidgetPrivate::init(), QWorkspaceTitleBar::isTool(), QDecorationDefault::paintButton(), QWorkspaceTitleBar::paintEvent(), QWidgetPrivate::setWindowIconText_helper(), QWidgetPrivate::setWindowTitle_helper(), tabTextFor(), QAccessibleWidget::text(), QMdiSubWindowPrivate::updateInternalWindowTitle(), and QDecorationDefault::windowTitleFor().

{
    Q_ASSERT(widget);

#ifdef QT_EVAL
    extern QString qt_eval_adapt_window_title(const QString &title);
    QString cap = qt_eval_adapt_window_title(title);
#else
    QString cap = title;
#endif

    if (cap.isEmpty())
        return cap;

    QLatin1String placeHolder("[*]");
    int placeHolderLength = 3; // QLatin1String doesn't have length()

    int index = cap.indexOf(placeHolder);

    // here the magic begins
    while (index != -1) {
        index += placeHolderLength;
        int count = 1;
        while (cap.indexOf(placeHolder, index) == index) {
            ++count;
            index += placeHolderLength;
        }

        if (count%2) { // odd number of [*] -> replace last one
            int lastIndex = cap.lastIndexOf(placeHolder, index - 1);
            if (widget->isWindowModified()
             && widget->style()->styleHint(QStyle::SH_TitleBar_ModifyNotification, 0, widget))
                cap.replace(lastIndex, 3, QWidget::tr("*"));
            else
                cap.remove(lastIndex, 3);
        }

        index = cap.indexOf(placeHolder, index);
    }

    cap.replace(QLatin1String("[*][*]"), placeHolder);

    return cap;
}

qt_widget_private()

Q_GUI_EXPORT QWidgetPrivate* qt_widget_private

(

QWidget *

widget

)

Definition at line 12920 of file qwidget.cpp.

Referenced by QVGWindowSurface::beginPaint(), QRasterWindowSurface::beginPaint(), QVGGraphicsSystem::createWindowSurface(), QGLGraphicsSystem::createWindowSurface(), QGraphicsViewPrivate::dispatchPendingUpdateRequests(), QInputDialogPrivate::ensureComboBox(), QInputDialogPrivate::ensureLineEdit(), QDirectFBWindowSurface::flush(), QRasterWindowSurface::flush(), QPixmap::grabWidget(), QTabWidgetPrivate::hasHeightForWidth(), QGLWidgetPrivate::init(), macWindowToolbarShow(), QDeclarativeTextInput::mouseReleaseEvent(), QDeclarativeTextEdit::mouseReleaseEvent(), QGraphicsTextItem::mouseReleaseEvent(), QApplication::notify(), QPlatformScreen::physicalSize(), QPlatformScreen::platformScreenForWidget(), qstring_to_xtp(), qt_dirtyRegion(), qt_event_request_window_change(), qt_mac_post_retranslateAppMenu(), qt_mac_send_posted_gl_updates(), qt_mac_update_child_gl_widgets(), qt_mac_update_intersected_gl_widgets(), qt_mac_update_widget_position(), qt_post_window_change_event(), qt_reg_winclass(), QWidgetBackingStoreTracker::registerWidget(), QMdi::ControlContainer::removeButtonsFromMenuBar(), QRasterWindowSurface::setGeometry(), QRuntimeGraphicsSystem::setGraphicsSystem(), QGL2PaintEngineExPrivate::systemStateChanged(), QAccessible::updateAccessibility(), QOpenGLPaintEngine::updateClipRegion(), QTabBarPrivate::updateMacBorderMetrics(), and updateRedirectedToGraphicsProxyWidget().

{
    return widget->d_func();
}

qt_x11_set_global_double_buffer()

Q_GUI_EXPORT void qt_x11_set_global_double_buffer

(

bool

enable

)

Definition at line 153 of file qwidget.cpp.

{
    qt_enable_backingstore = enable;
}

setAttribute_internal()

static void setAttribute_internal ( Qt::WidgetAttribute  attribute, bool  on, QWidgetData *  data, QWidgetPrivate *  d  )

static

Warning

This function is not part of the public interface.

This just sets the corresponding attribute bit to 1 or 0

Definition at line 11063 of file qwidget.cpp.

Referenced by QWidget::setAttribute().

{
    if (attribute < int(8*sizeof(uint))) {
        if (on)
            data->widget_attributes |= (1<<attribute);
        else
            data->widget_attributes &= ~(1<<attribute);
    } else {
        const int x = attribute - 8*sizeof(uint);
        const int int_off = x / (8*sizeof(uint));
        if (on)
            d->high_attributes[int_off] |= (1<<(x-(int_off*8*sizeof(uint))));
        else
            d->high_attributes[int_off] &= ~(1<<(x-(int_off*8*sizeof(uint))));
    }
}

setDisabledStyle()

void setDisabledStyle ( QWidget *  w, bool  setStyle  )

inline

Definition at line 8586 of file qwidget.cpp.

Referenced by QWidget::event().

{
    // set/reset WS_DISABLED style.
    if(w && w->isWindow() && w->isVisible() && w->isEnabled()) {
        LONG dwStyle = GetWindowLong(w->winId(), GWL_STYLE);
        LONG newStyle = dwStyle;
        if (setStyle)
            newStyle |= WS_DISABLED;
        else
            newStyle &= ~WS_DISABLED;
        if (newStyle != dwStyle) {
            SetWindowLong(w->winId(), GWL_STYLE, newStyle);
            // we might need to repaint in some situations (eg. menu)
            w->repaint();
        }
    }
}

Variable Documentation

qt_button_down

QPointer<QWidget> qt_button_down

Definition at line 188 of file qapplication_mac.mm.

Referenced by QWidgetPrivate::paintBackground().

qt_desktopWidget

QDesktopWidget* qt_desktopWidget

Definition at line 560 of file qapplication.cpp.

Referenced by QApplication::desktop(), and QApplication::~QApplication().