KoViewConverter Class Reference

The interface for view conversions. More...

#include <KoViewConverter.h>

Inheritance diagram for KoViewConverter:

List of all members.

Public Member Functions
virtual QPointF	documentToView (const QPointF &documentPoint) const =0
	Convert a coordinate in pt to pixels.
virtual QPointF	viewToDocument (const QPointF &viewPoint) const =0
	Convert a coordinate in pixels to pt.
virtual QRectF	documentToView (const QRectF &documentRect) const =0
	Convert a rectangle in pt to pixels.
virtual QRectF	viewToDocument (const QRectF &viewRect) const =0
	Convert a rectangle in pixels to pt.
virtual QSizeF	documentToView (const QSizeF &documentSize) const =0
	Convert a size in pt to pixels.
virtual QSizeF	viewToDocument (const QSizeF &viewSize) const =0
	Convert a size in pixels to pt.
virtual double	documentToViewX (double documentX) const =0
	Convert a single x coordinate in pt to pixels.
virtual double	documentToViewY (double documentY) const =0
	Convert a single y coordinate in pt to pixels.
virtual double	viewToDocumentX (double viewX) const =0
	Convert a single x coordinate in pixels to pt.
virtual double	viewToDocumentY (double viewY) const =0
	Convert a single y coordinate in pixels to pt.
virtual void	zoom (double *zoomX, double *zoomY) const =0
	Retrieve the zoom levels of the individual x and y axes.

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Detailed Description

The interface for view conversions.

All KoShape based objects are using a postscript-point (pt) based measurement system which requires a conversion to view coordinates (in pixel sizes) at the moment we are painting, and a conversion to the normalized coordinate system if we receive mouse events so we can figure out which KoShape object was touched.

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Member Function Documentation

virtual QSizeF KoViewConverter::documentToView

(

const QSizeF &

documentSize

)

const [pure virtual]

Convert a size in pt to pixels.

Parameters:

documentSize

the size in pt.

Returns:

the size in pixels.

Implemented in KoZoomHandler.

virtual QRectF KoViewConverter::documentToView

(

const QRectF &

documentRect

)

const [pure virtual]

Convert a rectangle in pt to pixels.

Parameters:

documentRect

the rect in the document coordinate system of a KoShape.

Implemented in KoZoomHandler.

virtual QPointF KoViewConverter::documentToView

(

const QPointF &

documentPoint

)

const [pure virtual]

Convert a coordinate in pt to pixels.

Parameters:

documentPoint

the point in the document coordinate system of a KoShape.

Implemented in KoZoomHandler.

virtual double KoViewConverter::documentToViewX

(

double

documentX

)

const [pure virtual]

Convert a single x coordinate in pt to pixels.

Parameters:

documentX

the x coordinate in pt.

Returns:

the x coordinate in pixels.

Implemented in KoZoomHandler.

virtual double KoViewConverter::documentToViewY

(

double

documentY

)

const [pure virtual]

Convert a single y coordinate in pt to pixels.

Parameters:

documentY

the y coordinate in pt.

Returns:

the y coordinate in pixels.

Implemented in KoZoomHandler.

virtual QSizeF KoViewConverter::viewToDocument

(

const QSizeF &

viewSize

)

const [pure virtual]

Convert a size in pixels to pt.

Parameters:

viewSize

the size in pixels.

Returns:

the size in pt.

Implemented in KoZoomHandler.

virtual QRectF KoViewConverter::viewToDocument

(

const QRectF &

viewRect

)

const [pure virtual]

Convert a rectangle in pixels to pt.

Parameters:

viewRect

the rect in the coordinate system of the widget, or window.

Implemented in KoZoomHandler.

virtual QPointF KoViewConverter::viewToDocument

(

const QPointF &

viewPoint

)

const [pure virtual]

Convert a coordinate in pixels to pt.

Parameters:

viewPoint

the point in the coordinate system of the widget, or window.

Implemented in KoZoomHandler.

virtual double KoViewConverter::viewToDocumentX

(

double

viewX

)

const [pure virtual]

Convert a single x coordinate in pixels to pt.

Parameters:

viewX

the x coordinate in pixels.

Returns:

the x coordinate in pt.

Implemented in KoZoomHandler.

virtual double KoViewConverter::viewToDocumentY

(

double

viewY

)

const [pure virtual]

Convert a single y coordinate in pixels to pt.

Parameters:

viewY

the y coordinate in pixels.

Returns:

the y coordinate in pt.

Implemented in KoZoomHandler.

virtual void KoViewConverter::zoom	(	double *	zoomX,
		double *	zoomY
	)			const [pure virtual]

Retrieve the zoom levels of the individual x and y axes.

Parameters:

	zoomX	a pointer to a double which will be modified to the horizontal zoom.
	zoomY	a pointer to a double which will be modified to the vertical zoom.

Implemented in KoZoomHandler.

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

• libs/main/KoViewConverter.h

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