X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/0f353563055080c651d9929ab8880eefcf2b790e..2562c82329113d43b0de122c86ac23f0dca0e669:/docs/latex/wx/palette.tex diff --git a/docs/latex/wx/palette.tex b/docs/latex/wx/palette.tex index bf6c5e0994..2b2eeefbac 100644 --- a/docs/latex/wx/palette.tex +++ b/docs/latex/wx/palette.tex @@ -1,7 +1,28 @@ +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +%% Name: palette.tex +%% Purpose: wxPalette docs +%% Author: +%% Modified by: +%% Created: +%% RCS-ID: $Id$ +%% Copyright: (c) wxWidgets +%% License: wxWindows license +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + \section{\class{wxPalette}}\label{wxpalette} -A palette is a table that maps pixel values to RGB colours. It allows the colours -of a low-depth bitmap, for example, to be mapped to the available colours in a display. +A palette is a table that maps pixel values to RGB colours. It allows the +colours of a low-depth bitmap, for example, to be mapped to the available +colours in a display. The notion of palettes is becoming more and more +obsolete nowadays and only the MSW port is still using a native palette. +All other ports use generic code which is basically just an array of +colours. + +It is likely that in the future the only use for palettes within wxWidgets +will be for representing colour indeces from images (such as GIF or PNG). +The image handlers for these formats have been modified to create a palette +if there is such information in the original image file (usually 256 or less +colour images). See \helpref{wxImage}{wximage} for more information. %TODO: topic overview for wxPalette. \wxheading{Derived from} @@ -100,8 +121,8 @@ Returns number of entries in palette. \membersection{wxPalette::GetPixel}\label{wxpalettegetpixel} -\constfunc{int}{GetPixel}{\param{const unsigned char }{red}, \param{const unsigned char }{green},\rtfsp - \param{const unsigned char }{blue}} +\constfunc{int}{GetPixel}{\param{unsigned char }{red}, \param{unsigned char }{green},\rtfsp + \param{unsigned char }{blue}} Returns a pixel value (index into the palette) for the given RGB values. @@ -115,7 +136,7 @@ Returns a pixel value (index into the palette) for the given RGB values. \wxheading{Return value} -The nearest palette index. +The nearest palette index or {\tt wxNOT\_FOUND} for unexpected errors. \wxheading{See also} @@ -177,5 +198,3 @@ fail the test. Inequality operator. Two palettes are not equal if they contain pointers to different underlying palette data. It does not compare each attribute. - -