class QColormap#

The QColormap class maps device independent QColors to device dependent pixel values. More…

Synopsis#

Methods#

def __init__()
def colorAt()
def colormap()
def depth()
def mode()
def pixel()
def size()

Static functions#

def cleanup()
def initialize()
def instance()

Note

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Detailed Description#

class Mode#

This enum describes how QColormap maps device independent RGB values to device dependent pixel values.

Constant

Description

QColormap.Direct

Pixel values are derived directly from the RGB values, also known as “True Color.”

QColormap.Indexed

Pixel values represent indexes into a list of available colors, i.e. QColormap uses the index of the color that most closely matches an RGB value.

QColormap.Gray

Similar to Indexed, pixel values represent a list of available gray tones. QColormap uses the index of the gray tone that most closely matches the computed gray tone of an RGB value.

Constant	Description
QColormap.Direct	Pixel values are derived directly from the RGB values, also known as “True Color.”
QColormap.Indexed	Pixel values represent indexes into a list of available colors, i.e. `QColormap` uses the index of the color that most closely matches an RGB value.
QColormap.Gray	Similar to `Indexed`, pixel values represent a list of available gray tones. `QColormap` uses the index of the gray tone that most closely matches the computed gray tone of an RGB value.

__init__(colormap)#

Parameters:: colormap – QColormap

Constructs a copy of another colormap.

static cleanup()#

colorAt(pixel)#

Parameters:: pixel – int
Return type:: QColor

Returns a QColor for the pixel.

See also

pixel()

colormap()#

Return type:: .list of QColor

Returns a list of colors which represents the devices colormap for Indexed and Gray modes. This function returns an empty list for Direct mode.

See also

size()

depth()#

Return type:: int

Returns the depth of the device.

See also

size()

static initialize()#

static instance([screen=-1])#

Parameters:: screen – int
Return type:: QColormap

Returns the colormap for the specified screen. If screen is -1, this function returns the colormap for the default screen.

mode()#

Return type:: Mode

Returns the mode of this colormap.

See also

Mode

pixel(color)#

Parameters:: color – QColor
Return type:: int

Returns a device dependent pixel value for the color.

See also

colorAt()

size()#

Return type:: int

Returns the size of the colormap for Indexed and Gray modes; Returns -1 for Direct mode.

See also

colormap()