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TheQColormap class maps device independent QColors to device dependent pixel values.More...
| Header: | #include <QColormap> |
| enum | Mode { Direct, Indexed, Gray } |
| QColormap(const QColormap & colormap) | |
| ~QColormap() | |
| const QColor | colorAt(uint pixel) const |
| const QVector<QColor> | colormap() const |
| int | depth() const |
| Mode | mode() const |
| uint | pixel(const QColor & color) const |
| int | size() const |
| QColormap & | operator=(const QColormap & colormap) |
TheQColormap class maps device independent QColors to device dependent pixel values.
This enum describes howQColormap maps device independent RGB values to device dependent pixel values.
| Constant | Value | Description |
|---|---|---|
QColormap::Direct | 0 | Pixel values are derived directly from the RGB values, also known as "True Color." |
QColormap::Indexed | 1 | Pixel values represent indexes into a vector of available colors, i.e.QColormap uses the index of the color that most closely matches an RGB value. |
QColormap::Gray | 2 | Similar toIndexed, pixel values represent a vector of available gray tones.QColormap uses the index of the gray tone that most closely matches the computed gray tone of an RGB value. |
Constructs a copy of anothercolormap.
Destroys the colormap.
Returns aQColor for thepixel.
See alsopixel().
Returns a vector of colors which represents the devices colormap forIndexed andGray modes. This function returns an empty vector forDirect mode.
See alsosize().
Returns the depth of the device.
See alsosize().
[static]HPALETTE QColormap::hPal()This function is only available on Windows.
Returns an handle to the HPALETTE used by this colormap. If no HPALETTE is being used, this function returns zero.
[static]QColormap QColormap::instance(int screen = -1)Returns the colormap for the specifiedscreen. Ifscreen is -1, this function returns the colormap for the default screen.
Returns the mode of this colormap.
See alsoQColormap::Mode.
Returns a device dependent pixel value for thecolor.
See alsocolorAt().
Returns the size of the colormap forIndexed andGray modes; Returns -1 forDirect mode.
See alsocolormap().
Assigns the givencolormap tothis color map and returns a reference tothis color map.
This function was introduced in Qt 4.2.
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