#include <qandroidplatformbackingstore.h>

Inheritance diagram for QAndroidPlatformBackingStore:

Collaboration diagram for QAndroidPlatformBackingStore:

Public Member Functions
	QAndroidPlatformBackingStore (QWindow *window)

QPaintDevice *	paintDevice () override
	Implement this function to return the appropriate paint device.

void	flush (QWindow *window, const QRegion &region, const QPoint &offset) override
	Flushes the given region from the specified window.

void	resize (const QSize &size, const QRegion &staticContents) override

QImage	toImage () const override
	Implemented in subclasses to return the content of the backingstore as a QImage.

void	setBackingStore (QWindow *window)

Public Member Functions inherited from QPlatformBackingStore
	QPlatformBackingStore (QWindow *window)
	Constructs an empty surface for the given top-level window.

virtual	~QPlatformBackingStore ()
	Destroys this surface.

QWindow *	window () const
	Returns a pointer to the top-level window associated with this surface.

QBackingStore *	backingStore () const
	Returns a pointer to the backing store associated with this surface.

virtual QPaintDevice *	paintDevice ()=0
	Implement this function to return the appropriate paint device.

virtual void	flush (QWindow *window, const QRegion &region, const QPoint &offset)
	Flushes the given region from the specified window.

virtual FlushResult	rhiFlush (QWindow window, qreal sourceDevicePixelRatio, const QRegion &region, const QPoint &offset, QPlatformTextureList textures, bool translucentBackground)
	Flushes the given region from the specified window, and compositing it with the specified textures list.

virtual QImage	toImage () const
	Implemented in subclasses to return the content of the backingstore as a QImage.

virtual QRhiTexture *	toTexture (QRhiResourceUpdateBatch resourceUpdates, const QRegion &dirtyRegion, TextureFlags flags) const
	May be reimplemented in subclasses to return the content of the backingstore as an QRhiTexture.

virtual QPlatformGraphicsBuffer *	graphicsBuffer () const
	Accessor for a backingstores graphics buffer abstraction.

virtual void	resize (const QSize &size, const QRegion &staticContents)=0

virtual bool	scroll (const QRegion &area, int dx, int dy)
	Scrolls the given area dx pixels to the right and dy downward; both dx and dy may be negative.

virtual void	beginPaint (const QRegion &)
	This function is called before painting onto the surface begins, with the region in which the painting will occur.

virtual void	endPaint ()
	This function is called after painting onto the surface has ended.

void	setRhiConfig (const QPlatformBackingStoreRhiConfig &config)

QRhi *	rhi () const

QRhiSwapChain *	rhiSwapChain () const

void	surfaceAboutToBeDestroyed ()

void	graphicsDeviceReportedLost ()

Protected Attributes
QImage	m_image

bool	m_backingStoreSet = false

Additional Inherited Members
Public Types inherited from QPlatformBackingStore
enum	FlushResult { FlushSuccess , FlushFailed , FlushFailedDueToLostDevice }

enum	TextureFlag { TextureSwizzle = 0x01 , TextureFlip = 0x02 , TexturePremultiplied = 0x04 }

Detailed Description

Definition at line 13 of file qandroidplatformbackingstore.h.

Constructor & Destructor Documentation

◆ QAndroidPlatformBackingStore()

QT_BEGIN_NAMESPACE QAndroidPlatformBackingStore::QAndroidPlatformBackingStore ( QWindow * window )

explicit

Definition at line 12 of file qandroidplatformbackingstore.cpp.

References setBackingStore(), and QPlatformBackingStore::window().

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Member Function Documentation

◆ flush()

void QAndroidPlatformBackingStore::flush	(	QWindow *	window,
		const QRegion &	region,
		const QPoint &	offset
	)

overridevirtual

Flushes the given region from the specified window.

Note: region is relative to the window which may not be top-level in case window corresponds to a native child widget. offset is the position of the native child relative to the top-level window.

Unlike rhiFlush(), this function's default implementation does nothing. It is expected that subclasses provide a platform-specific (non-QRhi-based) implementation, if applicable on the given platform.

See also: rhiFlush()

Reimplemented from QPlatformBackingStore.

Definition at line 24 of file qandroidplatformbackingstore.cpp.

References m_backingStoreSet, Q_UNUSED, setBackingStore(), and QPlatformBackingStore::window().

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◆ paintDevice()

QPaintDevice * QAndroidPlatformBackingStore::paintDevice ( )

overridevirtual

Implement this function to return the appropriate paint device.

Implements QPlatformBackingStore.

Definition at line 19 of file qandroidplatformbackingstore.cpp.

References m_image.

◆ resize()

void QAndroidPlatformBackingStore::resize	(	const QSize &	size,
		const QRegion &	staticContents
	)

overridevirtual

Implements QPlatformBackingStore.

Definition at line 34 of file qandroidplatformbackingstore.cpp.

References m_image, Q_UNUSED, screen, QImage::size(), and QPlatformBackingStore::window().

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◆ setBackingStore()

void QAndroidPlatformBackingStore::setBackingStore ( QWindow * window )

Definition at line 42 of file qandroidplatformbackingstore.cpp.

References m_backingStoreSet, qWarning, QSurface::RasterGLSurface, QSurface::RasterSurface, QWindow::surfaceType(), and QPlatformBackingStore::window().

Referenced by QAndroidPlatformBackingStore(), and flush().

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◆ toImage()

QImage QAndroidPlatformBackingStore::toImage ( ) const

inlineoverridevirtual

Implemented in subclasses to return the content of the backingstore as a QImage.

If composition via a 3D graphics API is supported, either this function or toTexture() must be implemented.

The returned image is only valid until the next operation (resize, paint, scroll, or flush) on the backingstore. The caller must not store the return value between calls, but instead call this function before each use, or make an explicit copy.