don't call wxYield() from EnsureVisible(), this is too dangerous - and unnecessary...

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

diff --git a/docs/latex/wx/bitmap.tex b/docs/latex/wx/bitmap.tex
index b639c4d397a0177ec9c3a3b570c96db903cacd8c..6428ab392cfa003f258c192395abd41a36c1dd95 100644 (file)
--- a/docs/latex/wx/bitmap.tex
+++ b/docs/latex/wx/bitmap.tex
@@ -10,7 +10,7 @@ either monochrome or colour.
 \helpref{wxGDIObject}{wxgdiobject}\\
 \helpref{wxObject}{wxobject}
 
-\wxheading{Include files}
+\wxheading{Include file}
 
 <wx/bitmap.h>
 
@@ -74,6 +74,23 @@ Creates a bitmap from XPM data.
 
 Loads a bitmap from a file or resource.
 
+\func{}{wxBitmap}{\param{const wxImage\&}{ img}, \param{int}{ depth = -1}}
+
+Creates bitmap object from the image. This has to be done
+to actually display an image as you cannot draw an image directly on a window.
+The resulting bitmap will use the provided colour depth (or that of the 
+current system if depth is -1) which entails that a colour reduction has 
+to take place.
+
+When in 8-bit mode (PseudoColour mode), the GTK port will use a color cube created 
+on program start-up to look up colors. This ensures a very fast conversion, but
+the image quality won't be perfect (and could be better for photo images using more
+sophisticated dithering algorithms).
+
+On Windows, if there is a palette present (set with SetPalette), it will be used when
+creating the wxBitmap (most useful in 8-bit display mode). On other platforms,
+the palette is currently ignored.
+
 \wxheading{Parameters}
 
 \docparam{bits}{Specifies an array of pixel values.}
@@ -92,12 +109,12 @@ Its meaning is determined by the {\it type} parameter.}
 
 \twocolwidtha{5cm}
 \begin{twocollist}
-\twocolitem{{\bf \indexit{wxBITMAP\_TYPE\_BMP}}}{Load a Windows bitmap file.}
-\twocolitem{{\bf \indexit{wxBITMAP\_TYPE\_BMP\_RESOURCE}}}{Load a Windows bitmap from the resource database.}
-\twocolitem{{\bf \indexit{wxBITMAP\_TYPE\_GIF}}}{Load a GIF bitmap file.}
-\twocolitem{{\bf \indexit{wxBITMAP\_TYPE\_XBM}}}{Load an X bitmap file.}
-\twocolitem{{\bf \indexit{wxBITMAP\_TYPE\_XPM}}}{Load an XPM bitmap file.}
-\twocolitem{{\bf \indexit{wxBITMAP\_TYPE\_RESOURCE}}}{Load a Windows resource name.}
+\twocolitem{\indexit{wxBITMAP\_TYPE\_BMP}}{Load a Windows bitmap file.}
+\twocolitem{\indexit{wxBITMAP\_TYPE\_BMP\_RESOURCE}}{Load a Windows bitmap from the resource database.}
+\twocolitem{\indexit{wxBITMAP\_TYPE\_GIF}}{Load a GIF bitmap file.}
+\twocolitem{\indexit{wxBITMAP\_TYPE\_XBM}}{Load an X bitmap file.}
+\twocolitem{\indexit{wxBITMAP\_TYPE\_XPM}}{Load an XPM bitmap file.}
+\twocolitem{\indexit{wxBITMAP\_TYPE\_RESOURCE}}{Load a Windows resource name.}
 \end{twocollist}
 
 The validity of these flags depends on the platform and wxWindows configuration.
@@ -109,6 +126,8 @@ In addition, wxBitmap can read all formats that \helpref{wxImage}{wximage} can,
 wxBITMAP\_TYPE\_JPEG, wxBITMAP\_TYPE\_TIF, wxBITMAP\_TYPE\_PNG, wxBITMAP\_TYPE\_GIF, wxBITMAP\_TYPE\_PCX, 
 and wxBITMAP\_TYPE\_PNM. Of course, you must have wxImage handlers loaded. }
 
+\docparam{img}{Platform-independent wxImage object.}
+
 \wxheading{Remarks}
 
 The first form constructs a bitmap object with no data; an assignment or another member function such as Create
@@ -164,6 +183,14 @@ empty bitmap with the given specifications}
 \end{twocollist}}
 }
 
+\perlnote{Constructors supported by wxPerl are:\par
+\begin{itemize}
+\item{Wx::Bitmap->new( width, height, depth = -1 )}
+\item{Wx::Bitmap->new( name, type )}
+\item{Wx::Bitmap->new( icon )}
+\end{itemize}
+}
+
 \membersection{wxBitmap::\destruct{wxBitmap}}
 
 \func{}{\destruct{wxBitmap}}{\void}
@@ -199,6 +226,14 @@ Deletes all bitmap handlers.
 
 This function is called by wxWindows on exit.
 
+\membersection{wxBitmap::ConvertToImage}\label{wxbitmapconverttoimage}
+
+\func{wxImage}{ConvertToImage}{\void}
+
+Creates an image from a platform-dependent bitmap. This preserves
+mask information so that bitmaps and images can be converted back
+and forth without loss in that respect.
+
 \membersection{wxBitmap::Create}\label{wxbitmapcreate}
 
 \func{virtual bool}{Create}{\param{int}{ width}, \param{int}{ height}, \param{int}{ depth = -1}}