QjPixmapView Class Reference

The JPixmapView shows a zoomable pixmap in a scrollable area. More...

#include <qjpixmapview.h>

List of all members.

Public Slots
void	setZoom (double zoom)
Signals
void	zoomChanged (double)
Public Member Functions
	QjPixmapView (QWidget *parent=0, char *name=0)
	QjPixmapView (const QPixmap &pm, QWidget *parent=0, char *name=0)
	QjPixmapView (double zoom, const QPixmap &pm, QWidget *parent=0, char *name=0)
void	clear ()
void	setPixmap (const QPixmap &pm)
void	setPixmapAndZoom (double zoom, const QPixmap &pm)
Protected Member Functions
QPoint	pmToViewport (const QPoint &p)
QPoint	viewportToPm (const QPoint &p)
virtual void	drawContents (QPainter *p, int clipx, int clipy, int clipw, int cliph)

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Detailed Description

The JPixmapView shows a zoomable pixmap in a scrollable area.

JPixmapView can be used to show a pixmap in a srcollable area. The view can be zoomed and clicks can be traces to and from the pixmap coordinates.

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Constructor & Destructor Documentation

QjPixmapView::QjPixmapView (  QWidget *  parent = 0, char *  name = 0 )

Creates and empty pixmap view.

QjPixmapView::QjPixmapView (  const QPixmap &  pm, QWidget *  parent = 0, char *  name = 0 )

Creates a pixmap view at 1:1 zoom factor.

QjPixmapView::QjPixmapView (  double  zoom, const QPixmap &  pm, QWidget *  parent = 0, char *  name = 0 )

Creates a pixmap view with a custom zoom factor.

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Member Function Documentation

void QjPixmapView::clear (   )

Clears the pixmap view.

void QjPixmapView::drawContents (  QPainter *  p, int  clipx, int  clipy, int  clipw, int  cliph )  [protected, virtual]

Draws the actual contents.

QPoint QjPixmapView::pmToViewport (  const QPoint &  p  )  [protected]

Converts a point (i.e. a co-ordinate) from pixmap co-ordinates to viewportco-ordinates. By converting a viewport coordinate to a pixmap coordinate and then back again the coordinate will snap to pixel boundaries.

void QjPixmapView::setPixmap (  const QPixmap &  pm  )

Assigns the view with a new pixmap.

void QjPixmapView::setPixmapAndZoom (  double  zoom, const QPixmap &  pm )

Assigns the view with a new pixmap and sets the zoom factor.

void QjPixmapView::setZoom (  double  zoom  )  [slot]

Alters the zoom factor.

QPoint QjPixmapView::viewportToPm (  const QPoint &  p  )  [protected]

Converts a point( i.e. a co-ordinate) from viewport co-ordinates to pixmap co-ordinates.

void QjPixmapView::zoomChanged (  double   )  [signal]

Emitted when the zoom factor is altered.

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

• qjpixmapview.h
• qjpixmapview.cpp

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