KisImagePyramid Class Reference

#include <kis_image_pyramid.h>

Inheritance diagram for KisImagePyramid:

Public Member Functions
	KisImagePyramid (qint32 pyramidHeight)
virtual	~KisImagePyramid ()
void	alignSourceRect (QRect &rect, qreal scale)
QImage	convertToQImage (qreal scale, qint32 unscaledX, qint32 unscaledY, qint32 unscaledWidth, qint32 unscaledHeight)
QImage	convertToQImage (qreal scale, const QRect &unscaledRect, enum Qt::TransformationMode transformMode)
void	drawFromOriginalImage (QPainter &gc, const QRect &imageRect, const QRectF &viewportRect, qint32 borderWidth, QPainter::RenderHints renderHints)
void	drawImage (qreal scale, QPainter &gc, const QPoint &topLeftScaled, const QRect &unscaledSourceRect)
KisImagePatch	getNearestPatch (qreal scaleX, qreal scaleY, const QRect &requestedRect, qint32 borderWidth)
void	setDirty (const QRect &rc)
void	setImage (KisImageWSP newImage)
void	setImageSize (qint32 w, qint32 h)
void	setMonitorProfile (const KoColorProfile *monitorProfile)

Detailed Description

Definition at line 32 of file kis_image_pyramid.h.

Constructor & Destructor Documentation

KisImagePyramid::KisImagePyramid ( qint32 pyramidHeight )

Definition at line 88 of file kis_image_pyramid.cpp.

KisImagePyramid::~KisImagePyramid ( ) [virtual]

Definition at line 95 of file kis_image_pyramid.cpp.

Member Function Documentation

void KisImagePyramid::alignSourceRect	(	QRect &	rect,
		qreal	scale
	)			`[virtual]`

Some backends cannot work with arbitrary areas due to scaling stuff.

That's why KisPrescaledProjection asks a backend to align an image rect before any operations.

Assume that KisImage pixels are always positive It allows us to use binary op-s for aligning

Here is a workaround of Qt's QRect::right()/bottom() "historical reasons". It should be one pixel smaller than actual right/bottom position

Reimplemented from KisProjectionBackend.

Definition at line 276 of file kis_image_pyramid.cpp.

QImage KisImagePyramid::convertToQImage	(	qreal	scale,
		qint32	unscaledX,
		qint32	unscaledY,
		qint32	unscaledWidth,
		qint32	unscaledHeight
	)

QImage KisImagePyramid::convertToQImage	(	qreal	scale,
		const QRect &	unscaledRect,
		enum Qt::TransformationMode	transformMode
	)

Render the projection onto a QImage.

Color profiling accurs here

void KisImagePyramid::drawFromOriginalImage	(	QPainter &	gc,
		const QRect &	imageRect,
		const QRectF &	viewportRect,
		qint32	borderWidth,
		QPainter::RenderHints	renderHints
	)			`[virtual]`

Draws a piece of original image onto 's canvas - area in KisImage pixels where to read from - area in canvas pixels where to write to If and don't agree, the image will be scaled has the same meaning as in getNearestPatch - hints, transmitted to QPainter during darwing.

Implements KisProjectionBackend.

Definition at line 346 of file kis_image_pyramid.cpp.

void KisImagePyramid::drawImage	(	qreal	scale,
		QPainter &	gc,
		const QPoint &	topLeftScaled,
		const QRect &	unscaledSourceRect
	)

Draw the projection onto a QPainter.

Color profiling accurs here

KisImagePatch KisImagePyramid::getNearestPatch	(	qreal	scaleX,
		qreal	scaleY,
		const QRect &	requestedRect,
		qint32	borderWidth
	)			`[virtual]`

Get a patch from a backend that can draw a on some QPainter in future.

and are the scales of planned drawing, btw, it doesn't mean that an QImage inside the patch will have these scales - it'll have the nearest suitable scale or even original scale (e.g. KisProjectionCache)

If is non-zero, will be axpended by pixels to all directions and image of this rect will actually be written to the patch's QImage. That is done to eliminate border effects in smooth scaling.

Implements KisProjectionBackend.

Definition at line 307 of file kis_image_pyramid.cpp.

void KisImagePyramid::setDirty ( const QRect & rc ) [virtual]

Updates (in KisImage pixels) from the base image.

Implements KisProjectionBackend.

Definition at line 145 of file kis_image_pyramid.cpp.

void KisImagePyramid::setImage ( KisImageWSP image ) [virtual]

Those methods are related to KisPrescaledProjection's equivalents.

Implements KisProjectionBackend.

Definition at line 127 of file kis_image_pyramid.cpp.