Minor tweek for WXPM

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

diff --git a/docs/latex/wx/image.tex b/docs/latex/wx/image.tex
index abed2426348f1f54ac6cc49a683ebbf9d4a2fd59..1366f12d048a6e10ae4608ddf77b59376b6631c9 100644 (file)
--- a/docs/latex/wx/image.tex
+++ b/docs/latex/wx/image.tex
@@ -21,6 +21,7 @@ wxDC::DrawBitmap.
 \wxheading{See also}
 
 \helpref{wxBitmap}{wxbitmap}
+\helpref{wxInitAllImageHandlers}{wxinitallimagehandlers}
 
 \latexignore{\rtfignore{\wxheading{Members}}}
 
@@ -258,6 +259,13 @@ Gets the green value of the mask colour.
 
 Gets the red value of the mask colour.
 
+\membersection{wxImage::GetSubImage}\label{wximagegetsubimage}
+
+\constfunc{wxImage}{GetSubImage}{\param{const wxRect&}{rect}}
+
+Returns a sub image of the current one as long as the rect belongs entirely to 
+the image.
+
 \membersection{wxImage::GetWidth}\label{wximagegetwidth}
 
 \constfunc{int}{GetWidth}{\void}
@@ -278,15 +286,16 @@ Returns TRUE if there is a mask active, FALSE otherwise.
 
 \func{static void}{InitStandardHandlers}{\void}
 
-Adds the standard image format handlers, which, depending on wxWindows
-configuration, can be handlers for Windows BMP (loading), PNG
-(loading and saving) and JPEG (loading and saving) file formats.
+Internal use only. Adds standard image format handlers. It only install BMP
+for the time being, which is use by wxBitmap.
 
-This function is called by wxWindows on startup.
+This function is called by wxWindows on startup, and shouldn't be called by
+the user.
 
 \wxheading{See also}
 
 \helpref{wxImageHandler}{wximagehandler}
+\helpref{wxInitAllImageHandlers}{wxinitallimagehandlers}
 
 \membersection{wxImage::InsertHandler}
 
@@ -303,11 +312,12 @@ of a given handler class in an application session.}
 
 \membersection{wxImage::LoadFile}\label{wximageloadfile}
 
-\func{bool}{LoadFile}{\param{const wxString\&}{ name}, \param{long}{ type}}
+\func{bool}{LoadFile}{\param{const wxString\&}{ name}, \param{long}{ type = wxBITMAP\_TYPE\_ANY}}
 
 \func{bool}{LoadFile}{\param{const wxString\&}{ name}, \param{const wxString\&}{ mimetype}}
 
-Loads an image from a file.
+Loads an image from a file. If no handler type is provided, the library will
+try to use wxBITMAP\_TYPE\_BMP.
 
 \func{bool}{LoadFile}{\param{wxInputStream\&}{ stream}, \param{long}{ type}}
 
@@ -328,8 +338,11 @@ The meaning of {\it stream} data is determined by the {\it type} parameter.}
 \twocolwidtha{5cm}%
 \begin{twocollist}
 \twocolitem{{\bf wxBITMAP\_TYPE\_BMP}}{Load a Windows image file.}
-\twocolitem{{\bf wxBITMAP\_TYPE\_PNG}}{Load a PNG image file.}
+\twocolitem{{\bf wxBITMAP\_TYPE\_GIF}}{Load a GIF image file.}
 \twocolitem{{\bf wxBITMAP\_TYPE\_JPEG}}{Load a JPEG image file.}
+\twocolitem{{\bf wxBITMAP\_TYPE\_PCX}}{Load a PCX image file.}
+\twocolitem{{\bf wxBITMAP\_TYPE\_PNG}}{Load a PNG image file.}
+\twocolitem{{\bf wxBITMAP\_TYPE\_PNM}}{Load a PNM image file.}
 \end{twocollist}
 
 The validity of these flags depends on the platform and wxWindows configuration.}
@@ -433,15 +446,50 @@ mimetype to the named file}
 \end{twocollist}}
 }
 
+\membersection{wxImage::Rescale}\label{wximagerescale}
+
+\func{wxImage}{Rescale}{\param{int}{ width}, \param{int}{ height}}
+
+Changes the size of the image in-place: after a call to this function, the
+image will have the given width and height.
+
+\wxheading{See also}
+
+\helpref{Scale}{wximagescale}
+
 \membersection{wxImage::Scale}\label{wximagescale}
 
-\func{wxImage}{Scale}{\param{int}{ width}, \param{int}{ height}}
+\constfunc{wxImage}{Scale}{\param{int}{ width}, \param{int}{ height}}
 
 Returns a scaled version of the image. This is also useful for
 scaling bitmaps in general as the only other way to scale bitmaps
-is to blit a wxMemoryDC into another wxMemoryDC. Windows can do such
-scaling itself but in the GTK port, scaling bitmaps is done using
-this routine internally.
+is to blit a wxMemoryDC into another wxMemoryDC.
+
+It may be mentioned that the GTK post uses this function internally
+to scale bitmaps when using mapping mode in wxDC. 
+
+Example:
+
+\begin{verbatim}
+    // get the bitmap from somewhere
+    wxBitmap bmp = ...;
+
+    // rescale it to have size of 32*32
+    if ( bmp.GetWidth() != 32 || bmp.GetHeight() != 32 )
+    {
+        wxImage image(bmp);
+        bmp = image.Scale(32, 32).ConvertToBitmap();
+
+        // another possibility:
+        image.Rescale(32, 32);
+        bmp = image;
+    }
+
+\end{verbatim}
+
+\wxheading{See also}
+
+\helpref{Rescale}{wximagerescale}
 
 \membersection{wxImage::SetData}\label{wximagesetdata}
 
@@ -545,6 +593,7 @@ created by IJG.)
 \wxheading{See also}
 
 \helpref{wxImage}{wximage}
+\helpref{wxInitAllImageHandlers}{wxinitallimagehandlers}
 
 \latexignore{\rtfignore{\wxheading{Members}}}