#include <qpaintdevice.h>

Inheritance diagram for QPaintDevice:

Collaboration diagram for QPaintDevice:

Public Types
enum	PaintDeviceMetric { PdmWidth = 1 , PdmHeight , PdmWidthMM , PdmHeightMM , PdmNumColors , PdmDepth , PdmDpiX , PdmDpiY , PdmPhysicalDpiX , PdmPhysicalDpiY , PdmDevicePixelRatio , PdmDevicePixelRatioScaled }

Public Member Functions
virtual	~QPaintDevice ()

virtual int	devType () const

bool	paintingActive () const

virtual QPaintEngine *	paintEngine () const =0

int	width () const

int	height () const

int	widthMM () const

int	heightMM () const

int	logicalDpiX () const

int	logicalDpiY () const

int	physicalDpiX () const

int	physicalDpiY () const

qreal	devicePixelRatio () const

qreal	devicePixelRatioF () const

int	colorCount () const

int	depth () const

Static Public Member Functions
static qreal	devicePixelRatioFScale ()

Protected Member Functions
	QPaintDevice () noexcept

virtual int	metric (PaintDeviceMetric metric) const

virtual void	initPainter (QPainter *painter) const

virtual QPaintDevice *	redirected (QPoint *offset) const

virtual QPainter *	sharedPainter () const

Protected Attributes
ushort	painters

Friends
class	QPainter

class	QPainterPrivate

class	QFontEngineMac

class	QX11PaintEngine

Q_GUI_EXPORT int	qt_paint_device_metric (const QPaintDevice *device, PaintDeviceMetric metric)

Detailed Description

Definition at line 17 of file qpaintdevice.h.

Member Enumeration Documentation

◆ PaintDeviceMetric

enum QPaintDevice::PaintDeviceMetric

Enumerator
PdmWidth
PdmHeight
PdmWidthMM
PdmHeightMM
PdmNumColors
PdmDepth
PdmDpiX
PdmDpiY
PdmPhysicalDpiX
PdmPhysicalDpiY
PdmDevicePixelRatio
PdmDevicePixelRatioScaled

Definition at line 20 of file qpaintdevice.h.

Constructor & Destructor Documentation

◆ ~QPaintDevice()

QPaintDevice::~QPaintDevice ( )

virtual

Definition at line 13 of file qpaintdevice.cpp.

References paintingActive(), and qWarning.

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◆ QPaintDevice()

QT_BEGIN_NAMESPACE QPaintDevice::QPaintDevice ( )

protectednoexcept

Definition at line 8 of file qpaintdevice.cpp.

References painters.

Member Function Documentation

◆ colorCount()

int QPaintDevice::colorCount ( ) const

inline

Definition at line 51 of file qpaintdevice.h.

◆ depth()

int QPaintDevice::depth ( ) const

inline

Definition at line 52 of file qpaintdevice.h.

◆ devicePixelRatio()

qreal QPaintDevice::devicePixelRatio ( ) const

inline

Definition at line 49 of file qpaintdevice.h.

Referenced by QErrorMessage::QErrorMessage(), QQC2::QWindowsStylePrivate::devicePixelRatio(), QWindowsVistaStylePrivate::drawBackground(), QWindows11Style::drawControl(), QWindowsVistaStyle::drawControl(), QGraphicsScenePrivate::drawItemHelper(), QWidgetPrivate::drawWidget(), QPainterPrivate::effectiveDevicePixelRatio(), QOpenGLWidget::event(), QWidget::grab(), QOpenGLWindow::grabFramebuffer(), QWidget::metric(), operator<<(), QSGSoftwareInternalRectangleNode::paint(), QSGSoftwareGlyphNode::paint(), QIconLoaderEngine::paint(), QSvgIconEngine::paint(), QLabel::paintEvent(), QQuickWidget::paintEvent(), qt_getDevicePixelRatio(), QtWaylandClient::QWaylandShmBackingStore::recreateBackBufferIfNeeded(), QSGSoftwareRenderer::render(), QWidgetPrivate::render_helper(), QQuickWidget::resizeEvent(), QOpenGLPaintDevice::setDevicePixelRatio(), QWindowsDragCursorWindow::setPixmap(), QShapedPixmapWindow::setPixmap(), and QMacStyle::standardPixmap().

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◆ devicePixelRatioF()

qreal QPaintDevice::devicePixelRatioF ( ) const

inline

Definition at line 50 of file qpaintdevice.h.

Referenced by createAnimationBuffer().

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◆ devicePixelRatioFScale()

static qreal QPaintDevice::devicePixelRatioFScale ( )

inlinestatic

Definition at line 54 of file qpaintdevice.h.

Referenced by QPicture::metric(), metric(), QImage::metric(), QPaintDeviceWindow::metric(), QWindowsDirect2DPaintDevice::metric(), QWidget::metric(), QBlittablePlatformPixmap::metric(), QRasterPlatformPixmap::metric(), QOpenGLPaintDevice::metric(), QX11PlatformPixmap::metric(), QSvgGenerator::metric(), QPdfEngine::metric(), QMacPrintEngine::metric(), and QWin32PrintEngine::metric().

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◆ devType()

int QPaintDevice::devType ( ) const

inlinevirtual

Reimplemented in QImage, QPicture, QPixmap, QOpenGLPaintDevice, QWindowsDirect2DPaintDevice, QPrinter, and QWidget.

Definition at line 77 of file qpaintdevice.h.

References QInternal::UnknownDevice.

Referenced by QMacCGContext::QMacCGContext(), QPainter::begin(), QMacPrintEngine::begin(), QOpenGL2PaintEngineEx::begin(), QCoreGraphicsPaintEngine::begin(), QX11PaintEngine::begin(), QPixmapConvolutionFilter::draw(), QWindowsVistaStylePrivate::drawBackground(), QQC2::QWindowsXPStylePrivate::drawBackground(), QRasterPaintEngine::drawCachedGlyphs(), QPainterPrivate::effectiveDevicePixelRatio(), QGraphicsProxyWidget::paint(), qt_x11Handle(), qt_x11Info(), QGraphicsView::render(), and QGraphicsScene::render().

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◆ height()

int QPaintDevice::height ( ) const

inline

Definition at line 42 of file qpaintdevice.h.

Referenced by QPainterPrivate::attachPainterPrivate(), QWindowsDirect2DPaintEngine::begin(), QX11PaintEngine::begin(), QPainterPrivate::draw_helper(), QTextDocumentLayoutPrivate::drawFrameDecoration(), QPainterPrivate::drawStretchedGradient(), QCoreGraphicsPaintEngine::drawTextItem(), src_gui_text_qtextlayout::Wrapper::elided(), QX11PaintEnginePrivate::fillPolygon_dev(), fillRegion(), QTextDocument::print(), QSGSoftwareRenderer::render(), QGraphicsView::render(), QGraphicsScene::render(), QSGSoftwareRenderableNode::renderNode(), and QRasterPaintEnginePrivate::systemStateChanged().

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◆ heightMM()

int QPaintDevice::heightMM ( ) const

inline

Definition at line 44 of file qpaintdevice.h.

◆ initPainter()

void QPaintDevice::initPainter ( QPainter * painter ) const

protectedvirtual

Reimplemented in QWidget.

Definition at line 24 of file qpaintdevice.cpp.

Referenced by QPainterPrivate::initFrom().

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◆ logicalDpiX()

int QPaintDevice::logicalDpiX ( ) const

inline

Definition at line 45 of file qpaintdevice.h.

Referenced by QAlphaPaintEnginePrivate::drawAlphaImage(), and QTextDocument::print().

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◆ logicalDpiY()

int QPaintDevice::logicalDpiY ( ) const

inline

Definition at line 46 of file qpaintdevice.h.

Referenced by QFont::QFont(), QPrintPreviewWidgetPrivate::_q_fit(), QTextDocumentLayoutPrivate::blockIndent(), QTextEngine::calculateTabWidth(), QAlphaPaintEnginePrivate::drawAlphaImage(), QWidget::event(), getSize(), QTextDocument::print(), QTextDocumentLayoutPrivate::scaleToDevice(), QTextDocumentLayoutPrivate::scaleToDevice(), QPrintPreviewWidget::setViewMode(), and QPrintPreviewWidgetPrivate::setZoomFactor().

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◆ metric()

int QPaintDevice::metric ( PaintDeviceMetric metric ) const

protectedvirtual

Reimplemented in QPdfWriter, QFakeDevice, QPicture, QImage, QPaintDeviceWindow, QRasterWindow, QOpenGLWindow, QWindowsDirect2DPaintDevice, QPixmap, QPrinter, QWidget, QOpenGLPaintDevice, QOpenGLWidget, and QSvgGenerator.

Definition at line 49 of file qpaintdevice.cpp.

References devicePixelRatioFScale(), metric(), PdmDevicePixelRatio, PdmDevicePixelRatioScaled, PdmDpiX, PdmDpiY, PdmNumColors, qDebug, and qWarning.

Referenced by QPainter::begin(), QFakeDevice::metric(), metric(), QPaintDeviceWindow::metric(), and QWidget::metric().

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◆ paintEngine()

virtual QPaintEngine * QPaintDevice::paintEngine ( ) const

pure virtual

Implemented in QImage, QFakeDevice, QPicture, QPixmap, QPaintDeviceWindow, QPdfWriter, QOpenGLPaintDevice, QOpenGLWidget, QWindowsDirect2DPaintDevice, QPrinter, QWidget, and QSvgGenerator.

Referenced by QPainter::begin(), and QWidgetPrivate::drawWidget().

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◆ paintingActive()

bool QPaintDevice::paintingActive ( ) const

inline

Definition at line 80 of file qpaintdevice.h.

Referenced by ~QPaintDevice(), QWidget::~QWidget(), QPixmap::fill(), QPixmap::operator=(), QPicture::save(), QPicture::save(), and QPixmap::setMask().

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◆ physicalDpiX()

int QPaintDevice::physicalDpiX ( ) const

inline

Definition at line 47 of file qpaintdevice.h.

◆ physicalDpiY()

int QPaintDevice::physicalDpiY ( ) const

inline

Definition at line 48 of file qpaintdevice.h.

◆ redirected()

QPaintDevice * QPaintDevice::redirected ( QPoint * offset ) const

protectedvirtual

Reimplemented in QRasterWindow, QOpenGLWindow, QWidget, and QOpenGLWidget.

Definition at line 31 of file qpaintdevice.cpp.

Referenced by QPainterPrivate::attachPainterPrivate(), QPainter::begin(), and QWidget::redirected().

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◆ sharedPainter()

QPainter * QPaintDevice::sharedPainter ( ) const

protectedvirtual

Reimplemented in QWidget.

Definition at line 39 of file qpaintdevice.cpp.

Referenced by QPainterPrivate::attachPainterPrivate().

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◆ width()

int QPaintDevice::width ( ) const

inline

Definition at line 41 of file qpaintdevice.h.

Referenced by QPainterPrivate::attachPainterPrivate(), QWindowsDirect2DPaintEngine::begin(), QX11PaintEngine::begin(), QPainterPrivate::draw_helper(), QTextDocumentLayoutPrivate::drawFrameDecoration(), QPainterPrivate::drawStretchedGradient(), src_gui_text_qtextlayout::Wrapper::elided(), QX11PaintEnginePrivate::fillPolygon_dev(), fillRegion(), QTextDocument::print(), QSGSoftwareRenderer::render(), QGraphicsView::render(), QGraphicsScene::render(), QSGSoftwareRenderableNode::renderNode(), and QRasterPaintEnginePrivate::systemStateChanged().

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◆ widthMM()

int QPaintDevice::widthMM ( ) const

inline

Definition at line 43 of file qpaintdevice.h.

Friends And Related Symbol Documentation

◆ QFontEngineMac

friend class QFontEngineMac

friend

Definition at line 68 of file qpaintdevice.h.

◆ QPainter

friend class QPainter

friend

Definition at line 66 of file qpaintdevice.h.

◆ QPainterPrivate

friend class QPainterPrivate

friend

Definition at line 67 of file qpaintdevice.h.

◆ qt_paint_device_metric

Q_GUI_EXPORT int qt_paint_device_metric	(	const QPaintDevice *	device,
		QPaintDevice::PaintDeviceMetric	metric )

friend

Definition at line 44 of file qpaintdevice.cpp.

◆ QX11PaintEngine

friend class QX11PaintEngine

friend

Definition at line 69 of file qpaintdevice.h.

Member Data Documentation

◆ painters

ushort QPaintDevice::painters

protected

Definition at line 62 of file qpaintdevice.h.

Referenced by QPaintDevice(), and QPainter::begin().

The documentation for this class was generated from the following files:

qtbase/src/gui/painting/qpaintdevice.h (05fc3aef53348fb58be6308076e000825b704e58)
qtbase/src/gui/painting/qpaintdevice.cpp (05fc3aef53348fb58be6308076e000825b704e58)

Public Types

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Friends

Detailed Description

Member Enumeration Documentation

◆ PaintDeviceMetric

Constructor & Destructor Documentation

◆ ~QPaintDevice()

◆ QPaintDevice()

Member Function Documentation

◆ colorCount()

◆ depth()

◆ devicePixelRatio()

◆ devicePixelRatioF()

◆ devicePixelRatioFScale()

◆ devType()

◆ height()

◆ heightMM()

◆ initPainter()

◆ logicalDpiX()

◆ logicalDpiY()

◆ metric()

◆ paintEngine()

◆ paintingActive()

◆ physicalDpiX()

◆ physicalDpiY()

◆ redirected()

◆ sharedPainter()

◆ width()

◆ widthMM()

Friends And Related Symbol Documentation

◆ QFontEngineMac

◆ QPainter

◆ QPainterPrivate

◆ qt_paint_device_metric

◆ QX11PaintEngine

Member Data Documentation

◆ painters