[ 1573138 ] small docs corrections

[wxWidgets.git] / docs / latex / wx / palette.tex

diff --git a/docs/latex/wx/palette.tex b/docs/latex/wx/palette.tex
index 14134b38da524e959cc850de03b4c0afec76016c..2b2eeefbac80ce119d43ad4fb1da6f886299e7a9 100644 (file)
--- a/docs/latex/wx/palette.tex
+++ b/docs/latex/wx/palette.tex
@@ -1,22 +1,52 @@
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% 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. 
 
-TODO: topic overview for wxPalette.
+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}
 
 \helpref{wxGDIObject}{wxgdiobject}\\
 \helpref{wxObject}{wxobject}
 
+\wxheading{Include files}
+
+<wx/palette.h>
+
+\wxheading{Predefined objects}
+
+Objects:
+
+{\bf wxNullPalette}
+
 \wxheading{See also}
 
 \helpref{wxDC::SetPalette}{wxdcsetpalette}, \helpref{wxBitmap}{wxbitmap}
 
 \latexignore{\rtfignore{\wxheading{Members}}}
 
-\membersection{wxPalette::wxPalette}\label{wxpaletteconstr}
+\membersection{wxPalette::wxPalette}\label{wxpalettector}
 
 \func{}{wxPalette}{\void}
 
@@ -26,10 +56,6 @@ Default constructor.
 
 Copy constructor. This uses reference counting so is a cheap operation.
 
-\func{}{wxPalette}{\param{const wxPalette*}{ palette}}
-
-Copy constructor. This uses reference counting so is a cheap operation.
-
 \func{}{wxPalette}{\param{int}{ n}, \param{const unsigned char* }{red},\\
  \param{const unsigned char* }{green}, \param{const unsigned char* }{blue}}
 
@@ -52,7 +78,10 @@ red, blue or green component.
 
 \helpref{wxPalette::Create}{wxpalettecreate}
 
-\membersection{wxPalette::\destruct{wxPalette}}
+\perlnote{In wxPerl the third constructor form takes as parameters
+  3 array references ( they must be of the same length ).}
+
+\membersection{wxPalette::\destruct{wxPalette}}\label{wxpalettedtor}
 
 \func{}{\destruct{wxPalette}}{\void}
 
@@ -78,16 +107,22 @@ red, blue or green component.
 
 \wxheading{Return value}
 
-TRUE if the creation was successful, FALSE otherwise.
+true if the creation was successful, false otherwise.
 
 \wxheading{See also}
 
-\helpref{wxPalette::wxPalette}{wxpaletteconstr}
+\helpref{wxPalette::wxPalette}{wxpalettector}
+
+\membersection{wxPalette::GetColoursCount}\label{wxpalettegetcolourscount}
+
+\constfunc{int}{GetColoursCount}{\void}
+
+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.
 
@@ -101,7 +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}
 
@@ -109,7 +144,7 @@ The nearest palette index.
 
 \membersection{wxPalette::GetRGB}\label{wxpalettegetrgb}
 
-\constfunc{bool}{GetPixel}{\param{int}{ pixel}, \param{const unsigned char* }{red}, \param{const unsigned char* }{green},\rtfsp
+\constfunc{bool}{GetRGB}{\param{int}{ pixel}, \param{const unsigned char* }{red}, \param{const unsigned char* }{green},\rtfsp
  \param{const unsigned char* }{blue}}
 
 Returns RGB values for a given palette index.
@@ -126,17 +161,20 @@ Returns RGB values for a given palette index.
 
 \wxheading{Return value}
 
-TRUE if the operation was successful.
+true if the operation was successful.
 
 \wxheading{See also}
 
 \helpref{wxPalette::GetPixel}{wxpalettegetpixel}
 
+\perlnote{In wxPerl this method takes only the {\tt pixel} parameter and
+  returns a 3-element list ( or the empty list upon failure ).}
+
 \membersection{wxPalette::Ok}\label{wxpaletteok}
 
 \constfunc{bool}{Ok}{\void}
 
-Returns TRUE if palette data is present.
+Returns true if palette data is present.
 
 \membersection{wxPalette::operator $=$}\label{wxpaletteassignment}
 
@@ -160,5 +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.
-
-