QCanvasPixmap - Pixmaps for QCanvasSprites
QCanvasPixmap ( const QString & datafilename )
QCanvasPixmap ( const QImage & image )
QCanvasPixmap ( const QPixmap & pm, const QPoint & offset )
int offsetX () const
int offsetY () const
void setOffset ( int x, int y )
The QCanvasPixmap class provides pixmaps for QCanvasSprites.
If you want to show a single pixmap on a QCanvas use a QCanvasSprite with just one pixmap.
When pixmaps are inserted into a QCanvasPixmapArray they are held as QCanvasPixmaps.
QCanvasSprites are used to show pixmaps on QCanvases and hold their pixmaps in a
QCanvasPixmapArray. If you retrieve a frame (pixmap) from a QCanvasSprite it will be
returned as a QCanvasPixmap.
The pixmap is a QPixmap and can only be set in the constructor. There are three different
constructors, one taking a QPixmap, one a QImage and one a file name that refers to a file
in any supported file format (see QImageIO).
QCanvasPixmap can have a hotspot which is defined in terms of an (x, y) offset. When you
create a QCanvasPixmap from a PNG file or from a QImage that has a QImage::offset(), the
offset() is initialized appropriately, otherwise the constructor leaves it at (0, 0). You
can set it later using setOffset(). When the QCanvasPixmap is used in a QCanvasSprite, the
offset position is the point at QCanvasItem::x() and QCanvasItem::y(), not the top-left
corner of the pixmap.
Note that for QCanvasPixmap objects created by a QCanvasSprite, the position of each
QCanvasPixmap object is set so that the hotspot stays in the same position.
See also QCanvasPixmapArray, QCanvasItem, QCanvasSprite, Graphics Classes, and Image
MEMBER FUNCTION DOCUMENTATION
QCanvasPixmap::QCanvasPixmap ( const QString & datafilename )
Constructs a QCanvasPixmap that uses the image stored in datafilename.
QCanvasPixmap::QCanvasPixmap ( const QImage & image )
Constructs a QCanvasPixmap from the image image.
QCanvasPixmap::QCanvasPixmap ( const QPixmap & pm, const QPoint & offset )
Constructs a QCanvasPixmap from the pixmap pm using the offset offset.
Destroys the pixmap.
int QCanvasPixmap::offsetX () const
Returns the x-offset of the pixmap's hotspot.
See also setOffset().
int QCanvasPixmap::offsetY () const
Returns the y-offset of the pixmap's hotspot.
See also setOffset().
void QCanvasPixmap::setOffset ( int x, int y )
Sets the offset of the pixmap's hotspot to (x, y).
Warning: Do not call this function if any QCanvasSprites are currently showing this
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Trolltech AS 9 December 2002 QCanvasPixmap(3qt)