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gtk.gdk.Colormap(visual, allocate) def alloc_color(color, writeable=False, best_match=True) def alloc_color(spec, writeable=False, best_match=True) def alloc_color(red, green, blue, writeable=False, best_match=True) def get_visual() def get_screen() def query_color(pixel)
Functions
def gtk.gdk.colormap_get_system()A gtk.gdk.Colormap
contains a table mapping index values to the RGB color component values used
to display the colors. The index value corresponds to the pixel value of a
gtk.gdk.Color
object and the RGB component values correspond to the gtk.gdk.Color red,
green and blue values. The gtk.Widget.get_colormap()
method is used to retrieve the colormap used by a widget. The default system
colormap is retrieved by using the gtk.gdk.colormap_get_system()
function. The alloc_color()
method has three signatures to allow the color specification using an
unallocated gtk.gdk.Color, a
string or a RGB trio.
gtk.gdk.Colormap(visual, allocate)
| the gtk.gdk.Visual to
use |
| if True, the newly created
colormap will be a private colormap, and all colors in it will be allocated
for the applications use. |
Returns : | a gtk.gdk.Colormap
object |
Creates a new gtk.gdk.Colormap
for the gtk.gdk.Visual
specified by visual. If
allocate is True the colormap will
be a private colormap for the sole use of the application.
def alloc_color(color, writeable=False, best_match=True)
| an unallocated gtk.gdk.Color |
| if True the colormap entry
is writeable. |
| if True a best match to the
requested color can be used if needed. |
Returns : | a new gtk.gdk.Color
object |
The alloc_color() method allocates the
color specified by color in the colormap. The value
of color should be an unallocated gtk.gdk.Color. If
writeable is True the color is
allocated writeable which means it can be changed after allocation but
cannot be shared with another application. If
best_match is True the closest
match to the color will be returned if the request could not be satisfied
exactly.
This method raises:
def alloc_color(spec, writeable=False, best_match=True)
| a string containing a color specification |
| if True the colormap entry
is writeable. |
| if True a best match to the
requested color can be used if needed. |
Returns : | a gtk.gdk.Color
object |
The alloc_color() method allocates the
color specified by spec in the colormap. The format
of spec is a string containing the specification of
the color either as a name (e.g. "navajowhite") as specified in the X11
rgb.txt file or as a hexadecimal string (e.g.
"#FF0078"). The hexadecimal string must start with '#' and must contain 3
sets of hexadecimal digits of the same length (i.e. 1, 2 ,3 or 4 digits).
For example the following specify the same color value: "#F0A", "#FF00AA",
"#FFF000AAA" and "#FFFF0000AAAA". If writeable is
True the color is allocated writeable which means it can
be changed after allocation but cannot be shared with another application.
If best_match is True the closest
match to the color will be returned if the request could not be satisfied
exactly.
This method raises:
def alloc_color(red, green, blue, writeable=False, best_match=True)
| the red component of the color in the range 0-65535 |
| the green component of the color in the range 0-65535 |
| the blue component of the color in the range 0-65535 |
| a gboolean |
| a gboolean |
Returns : | a gtk.gdk.Color object |
The alloc_color() method allocates the
color specified by the component values red,
green and blue. If
writeable is True the color is
allocated writeable which means it can be changed after allocation but
cannot be shared with another application. If
best_match is True the closest
match to the color will be returned if the request could not be satisfied
exactly.
This method raises:
def get_visual()Returns : | a gtk.gdk.Visual |
The get_visual() method returns the
visual the colormap was created for. See the gtk.gdk.Colormap
constructor.
def get_screen()Returns : | a gtk.gdk.Screen |
The get_screen() method returns the
gtk.gdk.Screen
the colormap was created for.
def query_color()
| a pixel value |
Returns : | the gtk.gdk.Color
corresponding to pixel |
This method is available in PyGTK 2.4 and above.
The query_color() method returns the
gtk.gdk.Color
corresponding to the hardware pixel value specified by
pixel. pixel must be a valid
pixel in the colormap. It's a programmer error to call this method with a
pixel which is not in the colormap. Hardware pixels are normally obtained
from the alloc_color()
method, or from a gtk.gdk.Image
object. (A gtk.gdk.Image
contains image data in hardware format while a gtk.gdk.Pixbuf
contains image data in a canonical 24-bit RGB format.)
def gtk.gdk.colormap_get_system()Returns : | the system' default colormap |
The gtk.gdk.colormap_get_system()
method returns the default colormap used by the system on the default
screen. See the gtk.gdk.Screen.get_system_colormap()
method for more information.
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