Q3CanvasPixmap Class Reference
The Q3CanvasPixmap class provides pixmaps for Q3CanvasSprites. More...
This class is part of the Qt 3 support library. It is provided to keep old source code working. We strongly advise against using it in new code. See Porting to Qt 4 for more information.
|Q3CanvasPixmap ( const QString & datafilename )|
|Q3CanvasPixmap ( const QImage & image )|
|Q3CanvasPixmap ( const QPixmap & pm, const QPoint & offset )|
|int||offsetX () const|
|int||offsetY () const|
|void||setOffset ( int x, int y )|
Additional Inherited Members
The Q3CanvasPixmap class provides pixmaps for Q3CanvasSprites.
When pixmaps are inserted into a Q3CanvasPixmapArray they are held as Q3CanvasPixmaps. Q3CanvasSprites are used to show pixmaps on Q3Canvases and hold their pixmaps in a Q3CanvasPixmapArray. If you retrieve a frame (pixmap) from a Q3CanvasSprite it will be returned as a Q3CanvasPixmap.
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 QImageReader).
Q3CanvasPixmap can have a hotspot which is defined in terms of an (x, y) offset. When you create a Q3CanvasPixmap 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 Q3CanvasPixmap is used in a Q3CanvasSprite, the offset position is the point at Q3CanvasItem::x() and Q3CanvasItem::y(), not the top-left corner of the pixmap.
Note that for Q3CanvasPixmap objects created by a Q3CanvasSprite, the position of each Q3CanvasPixmap object is set so that the hotspot stays in the same position.
Member Function Documentation
Q3CanvasPixmap::Q3CanvasPixmap ( const QString & datafilename )
Constructs a Q3CanvasPixmap that uses the image stored in datafilename.
Q3CanvasPixmap::Q3CanvasPixmap ( const QImage & image )
Constructs a Q3CanvasPixmap from the image image.
Constructs a Q3CanvasPixmap from the pixmap pm using the offset offset.
Destroys the pixmap.
Returns the x-offset of the pixmap's hotspot.
See also setOffset().
Returns the y-offset of the pixmap's hotspot.
See also setOffset().
Sets the offset of the pixmap's hotspot to (x, y).
Warning: Do not call this function if any Q3CanvasSprites are currently showing this pixmap.