X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/88ef3a57a47f840adea9d38bc11cb30689a0838a..e2d5abbf527ae760cf65467bf94b914ba9974657:/docs/latex/wx/palette.tex diff --git a/docs/latex/wx/palette.tex b/docs/latex/wx/palette.tex index f46329e085..54015292e3 100644 --- a/docs/latex/wx/palette.tex +++ b/docs/latex/wx/palette.tex @@ -11,8 +11,18 @@ \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} @@ -24,6 +34,10 @@ of a low-depth bitmap, for example, to be mapped to the available colours in a d +\wxheading{Library} + +\helpref{wxCore}{librarieslist} + \wxheading{Predefined objects} Objects: @@ -44,7 +58,7 @@ Default constructor. \func{}{wxPalette}{\param{const wxPalette\&}{ palette}} -Copy constructor. This uses reference counting so is a cheap operation. +Copy constructor, uses \helpref{reference counting}{trefcount}. \func{}{wxPalette}{\param{int}{ n}, \param{const unsigned char* }{red},\\ \param{const unsigned char* }{green}, \param{const unsigned char* }{blue}} @@ -76,6 +90,7 @@ red, blue or green component. \func{}{\destruct{wxPalette}}{\void} Destructor. +See \helpref{reference-counted object destruction}{refcountdestruct} for more info. \membersection{wxPalette::Create}\label{wxpalettecreate} @@ -160,9 +175,9 @@ true if the operation was successful. \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} +\membersection{wxPalette::IsOk}\label{wxpaletteisok} -\constfunc{bool}{Ok}{\void} +\constfunc{bool}{IsOk}{\void} Returns true if palette data is present. @@ -170,21 +185,5 @@ Returns true if palette data is present. \func{wxPalette\&}{operator $=$}{\param{const wxPalette\& }{palette}} -Assignment operator, using reference counting. Returns a reference -to `this'. - -\membersection{wxPalette::operator $==$}\label{wxpaletteequals} - -\func{bool}{operator $==$}{\param{const wxPalette\& }{palette}} - -Equality operator. Two palettes are equal if they contain pointers -to the same underlying palette data. It does not compare each attribute, -so two independently-created palettes using the same parameters will -fail the test. - -\membersection{wxPalette::operator $!=$}\label{wxpalettenotequals} - -\func{bool}{operator $!=$}{\param{const wxPalette\& }{palette}} +Assignment operator, using \helpref{reference counting}{trefcount}. -Inequality operator. Two palettes are not equal if they contain pointers -to different underlying palette data. It does not compare each attribute.