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The KPixmap class is an off-screen buffer paint device that extends the features of QPixmap More...
#include <kpixmap.h>
Inherits: QPixmap (qt)
The KPixmap class is an off-screen buffer paint device that extends the features of QPixmap. KPixmap has two new color modes, WebColor and LowColor, applicable to 8bpp displays.
In WebColor mode all images are dithered to the Netscape palette, even when they have their own color table. WebColor is the default mode for KPixmap so that standard applications can share the Netscape palette across the desktop.
In LowColor mode images are checked to see if their color table matches the KDE icon palette. If the color tables do not match, the images are dithered to a minimal 3x3x3 color cube. LowColor mode can be used to load icons, background images etc. so that components of the desktop which are always present use no more than 40 colors.
[public]
Creates a null pixmap
[public]
Destroys the pixmap.
[public]
Fills the pixmap with a color blend running from color ca to color cb.
If upDown is TRUE the blend will run from the top to the bottom of the pixmap. If upDown is FALSE the blend will run from the right to the left of the pixmap.
By default, the blend will use 3 colors on 8 bpp displays, 32 colors on 16 bpp displays and unlimited colors at higher dislay depths. For 8bpp displays ncols specifies an alternative number of colors to use. The greater the number of colors allocated the better the appearance of the gradient but the longer it takes to make.
[public]
Fills the pixmap with a two color pattern, specified by the pattern bits in pattern[], the color ca to be used for the background and the color cb to be used for the foreground.
[public]
Converts an image and sets this pixmap. Returns TRUE if successful.
The conversion_flags argument is a bitwise-OR from the following choices. The options marked (default) are the choice if no other choice from the list is included (they are zero):
Color/Mono preference
Dithering mode preference, for RGB channels
Dithering mode preference, for alpha channel
Color matching versus dithering preference
Passing 0 for conversion_flags gives all the default options.
[public]
Loads a pixmap from the file fileName. Returns TRUE if successful, or FALSE if the pixmap could not be loaded.
If format is specified, the loader attempts to read the pixmap using the specified format. If format is not specified (default), the loader reads a few bytes from the header to guess the file format.
See the convertFromImage() documentation for a description of the conversion_flags argument.
The QImageIO documentation lists the supported image formats and explains how to add extra formats.
Documentation generated by tasin@cd1 on Die Nov 30 17:31:35 CET 1999 | Kdoc |