%\overview{Overview}{wxbitmapoverview}
%
This class encapsulates the concept of a platform-dependent bitmap,
-either monochrome or colour.
+either monochrome or colour or colour with alpha channel support.
\wxheading{Derived from}
\helpref{wxGDIObject}{wxgdiobject}\\
\helpref{wxObject}{wxobject}
-\wxheading{Include file}
+\wxheading{Include files}
<wx/bitmap.h>
+\wxheading{Library}
+
+\helpref{wxCore}{librarieslist}
+
\wxheading{Predefined objects}
Objects:
\latexignore{\rtfignore{\wxheading{Members}}}
-\membersection{wxBitmap::wxBitmap}\label{wxbitmapconstr}
+\membersection{wxBitmap::wxBitmap}\label{wxbitmapctor}
\func{}{wxBitmap}{\void}
\func{}{wxBitmap}{\param{const wxBitmap\& }{bitmap}}
-Copy constructor.
+Copy constructor, uses \helpref{reference counting}{trefcount}.
+To make a real copy, you can use:
-\func{}{wxBitmap}{\param{void*}{ data}, \param{int}{ type}, \param{int}{ width}, \param{int}{ height}, \param{int}{ depth = -1}}
+\begin{verbatim}
+ wxBitmap newBitmap = oldBitmap.GetSubBitmap(
+ wxRect(0, 0, oldBitmap.GetWidth(), oldBitmap.GetHeight()));
+\end{verbatim}
+
+\func{}{wxBitmap}{\param{const void*}{ data}, \param{int}{ type}, \param{int}{ width}, \param{int}{ height}, \param{int}{ depth = -1}}
Creates a bitmap from the given data which is interpreted in platform-dependent
manner.
Creates a new bitmap. A depth of -1 indicates the depth of the current screen
or visual. Some platforms only support 1 for monochrome and -1 for the current
-colour setting.
+colour setting. Beginning with version 2.5.4 of wxWidgets a depth of 32 including
+an alpha channel is supported under MSW, Mac and GTK+.
-\func{}{wxBitmap}{\param{const char**}{ bits}}
+\func{}{wxBitmap}{\param{const char* const*}{ bits}}
Creates a bitmap from XPM data.
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
+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
+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).
\twocolwidtha{5cm}
\begin{twocollist}
\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\_BMP\_RESOURCE}}{Load a Windows bitmap resource from the executable. Windows only.}
+\twocolitem{\indexit{wxBITMAP\_TYPE\_PICT\_RESOURCE}}{Load a PICT image resource from the executable. Mac OS only.}
\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.
-If all possible wxWindows settings are used, the Windows platform supports BMP file, BMP resource,
+The validity of these flags depends on the platform and wxWidgets configuration.
+If all possible wxWidgets settings are used, the Windows platform supports BMP file, BMP resource,
XPM data, and XPM. Under wxGTK, the available formats are BMP file, XPM data, XPM file, and PNG file.
Under wxMotif, the available formats are XBM data, XBM file, XPM data, XPM file.
-In addition, wxBitmap can read all formats that \helpref{wxImage}{wximage} can, which currently include
-wxBITMAP\_TYPE\_JPEG, wxBITMAP\_TYPE\_TIF, wxBITMAP\_TYPE\_PNG, wxBITMAP\_TYPE\_GIF, wxBITMAP\_TYPE\_PCX,
+In addition, wxBitmap can read all formats that \helpref{wxImage}{wximage} can, which currently include
+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.}
The sixth form constructs a new bitmap.
-The seventh form constructs a bitmap from pixmap (XPM) data, if wxWindows has been configured
+The seventh form constructs a bitmap from pixmap (XPM) data, if wxWidgets has been configured
to incorporate this feature.
To use this constructor, you must first include an XPM file. For
\pythonnote{Constructors supported by wxPython are:\par
\indented{2cm}{\begin{twocollist}
\twocolitem{{\bf wxBitmap(name, flag)}}{Loads a bitmap from a file}
-\twocolitem{{\bf wxBitmapFromData(data, type, width, height, depth=1)}}{Creates
-a bitmap from the given data, which can be of arbitrary type.}
-\twocolitem{{\bf wxNoRefBitmap(name, flag)}}{This one won't own the
-reference, so Python won't call the destructor, this is good for toolbars
-and such where the parent will manage the bitmap.}
\twocolitem{{\bf wxEmptyBitmap(width, height, depth = -1)}}{Creates an
empty bitmap with the given specifications}
+\twocolitem{{\bf wxBitmapFromXPMData(listOfStrings)}}{Create a bitmap
+from a Python list of strings whose contents are XPM data.}
+\twocolitem{{\bf wxBitmapFromBits(bits, width, height,
+depth=-1)}}{Create a bitmap from an array of bits contained in a
+string.}
+\twocolitem{{\bf wxBitmapFromImage(image, depth=-1)}}{Convert a
+wxImage to a wxBitmap.}
\end{twocollist}}
}
\item{Wx::Bitmap->new( width, height, depth = -1 )}
\item{Wx::Bitmap->new( name, type )}
\item{Wx::Bitmap->new( icon )}
+\item{Wx::Bitmap->newFromBits( bits, width, height, depth = 1 )}
+\item{Wx::Bitmap->newFromXPM( data )}
\end{itemize}
}
-\membersection{wxBitmap::\destruct{wxBitmap}}
+\membersection{wxBitmap::\destruct{wxBitmap}}\label{wxbitmapdtor}
\func{}{\destruct{wxBitmap}}{\void}
-Destroys the wxBitmap object and possibly the underlying bitmap data.
-Because reference counting is used, the bitmap may not actually be
-destroyed at this point - only when the reference count is zero will the
-data be deleted.
+Destructor.
+See \helpref{reference-counted object destruction}{refcountdestruct} for more info.
If the application omits to delete the bitmap explicitly, the bitmap will be
-destroyed automatically by wxWindows when the application exits.
+destroyed automatically by wxWidgets when the application exits.
Do not delete a bitmap that is selected into a memory device context.
\helpref{wxBitmapHandler}{wxbitmaphandler}
-\membersection{wxBitmap::CleanUpHandlers}
+\membersection{wxBitmap::CleanUpHandlers}\label{wxbitmapcleanuphandlers}
\func{static void}{CleanUpHandlers}{\void}
Deletes all bitmap handlers.
-This function is called by wxWindows on exit.
+This function is called by wxWidgets on exit.
\membersection{wxBitmap::ConvertToImage}\label{wxbitmapconverttoimage}
mask information so that bitmaps and images can be converted back
and forth without loss in that respect.
+\membersection{wxBitmap::CopyFromIcon}\label{wxbitmapcopyfromicon}
+
+\func{bool}{CopyFromIcon}{\param{const wxIcon\&}{ icon}}
+
+Creates the bitmap from an icon.
+
\membersection{wxBitmap::Create}\label{wxbitmapcreate}
\func{virtual bool}{Create}{\param{int}{ width}, \param{int}{ height}, \param{int}{ depth = -1}}
Creates a fresh bitmap. If the final argument is omitted, the display depth of
the screen is used.
-\func{virtual bool}{Create}{\param{void*}{ data}, \param{int}{ type}, \param{int}{ width}, \param{int}{ height}, \param{int}{ depth = -1}}
+\func{virtual bool}{Create}{\param{const void*}{ data}, \param{int}{ type}, \param{int}{ width}, \param{int}{ height}, \param{int}{ depth = -1}}
Creates a bitmap from the given data, which can be of arbitrary type.
\docparam{data}{Data whose type depends on the value of {\it type}.}
-\docparam{type}{A bitmap type identifier - see \helpref{wxBitmap::wxBitmap}{wxbitmapconstr} for a list
+\docparam{type}{A bitmap type identifier - see \helpref{wxBitmap::wxBitmap}{wxbitmapctor} for a list
of possible values.}
\wxheading{Return value}
-TRUE if the call succeeded, FALSE otherwise.
+true if the call succeeded, false otherwise.
\wxheading{Remarks}
\wxheading{See also}
-\helpref{wxBitmap::wxBitmap}{wxbitmapconstr}
+\helpref{wxBitmap::wxBitmap}{wxbitmapctor}
-\membersection{wxBitmap::FindHandler}
+\membersection{wxBitmap::FindHandler}\label{wxbitmapfindhandler}
\func{static wxBitmapHandler*}{FindHandler}{\param{const wxString\& }{name}}
Finds the handler with the given name.
-\func{static wxBitmapHandler*}{FindHandler}{\param{const wxString\& }{extension}, \param{long}{ bitmapType}}
+\func{static wxBitmapHandler*}{FindHandler}{\param{const wxString\& }{extension}, \param{wxBitmapType}{ bitmapType}}
Finds the handler associated with the given extension and type.
-\func{static wxBitmapHandler*}{FindHandler}{\param{long }{bitmapType}}
+\func{static wxBitmapHandler*}{FindHandler}{\param{wxBitmapType }{bitmapType}}
Finds the handler associated with the given bitmap type.
\helpref{wxBitmapHandler}{wxbitmaphandler}
-\membersection{wxBitmap::GetDepth}
+\membersection{wxBitmap::GetDepth}\label{wxbitmapgetdepth}
\constfunc{int}{GetDepth}{\void}
Gets the colour depth of the bitmap. A value of 1 indicates a
monochrome bitmap.
-\membersection{wxBitmap::GetHandlers}
+\membersection{wxBitmap::GetHandlers}\label{wxbitmapgethandlers}
\func{static wxList\&}{GetHandlers}{\void}
\constfunc{wxBitmap}{GetSubBitmap}{\param{const wxRect\&}{rect}}
-Returns a sub bitmap of the current one as long as the rect belongs entirely to
+Returns a sub bitmap of the current one as long as the rect belongs entirely to
the bitmap. This function preserves bit depth and mask information.
-\membersection{wxBitmap::InitStandardHandlers}
+\membersection{wxBitmap::InitStandardHandlers}\label{wxbitmapinitstandardhandlers}
\func{static void}{InitStandardHandlers}{\void}
-Adds the standard bitmap format handlers, which, depending on wxWindows
+Adds the standard bitmap format handlers, which, depending on wxWidgets
configuration, can be handlers for Windows bitmap, Windows bitmap resource, and XPM.
-This function is called by wxWindows on startup.
+This function is called by wxWidgets on startup.
\wxheading{See also}
\helpref{wxBitmapHandler}{wxbitmaphandler}
-\membersection{wxBitmap::InsertHandler}
+\membersection{wxBitmap::InsertHandler}\label{wxbitmapinserthandler}
\func{static void}{InsertHandler}{\param{wxBitmapHandler*}{ handler}}
\membersection{wxBitmap::LoadFile}\label{wxbitmaploadfile}
-\func{bool}{LoadFile}{\param{const wxString\&}{ name}, \param{long}{ type}}
+\func{bool}{LoadFile}{\param{const wxString\&}{ name}, \param{wxBitmapType}{ type}}
Loads a bitmap from a file or resource.
\twocolwidtha{5cm}
\begin{twocollist}
\twocolitem{{\bf wxBITMAP\_TYPE\_BMP}}{Load a Windows bitmap file.}
-\twocolitem{{\bf wxBITMAP\_TYPE\_BMP\_RESOURCE}}{Load a Windows bitmap from the resource database.}
+\twocolitem{{\bf wxBITMAP\_TYPE\_BMP\_RESOURCE}}{Load a Windows bitmap resource from the executable.}
+\twocolitem{{\bf wxBITMAP\_TYPE\_PICT\_RESOURCE}}{Load a PICT image resource from the executable. Mac OS only.}
\twocolitem{{\bf wxBITMAP\_TYPE\_GIF}}{Load a GIF bitmap file.}
\twocolitem{{\bf wxBITMAP\_TYPE\_XBM}}{Load an X bitmap file.}
\twocolitem{{\bf wxBITMAP\_TYPE\_XPM}}{Load an XPM bitmap file.}
\end{twocollist}
-The validity of these flags depends on the platform and wxWindows configuration.
+The validity of these flags depends on the platform and wxWidgets configuration.
-In addition, wxBitmap can read all formats that \helpref{wxImage}{wximage} can
+In addition, wxBitmap can read all formats that \helpref{wxImage}{wximage} can
(wxBITMAP\_TYPE\_JPEG, wxBITMAP\_TYPE\_PNG, wxBITMAP\_TYPE\_GIF, wxBITMAP\_TYPE\_PCX, wxBITMAP\_TYPE\_PNM).
(Of course you must have wxImage handlers loaded.) }
\wxheading{Return value}
-TRUE if the operation succeeded, FALSE otherwise.
+true if the operation succeeded, false otherwise.
\wxheading{Remarks}
\helpref{wxBitmap::SaveFile}{wxbitmapsavefile}
-\membersection{wxBitmap::Ok}\label{wxbitmapok}
+\membersection{wxBitmap::IsOk}\label{wxbitmapisok}
-\constfunc{bool}{Ok}{\void}
+\constfunc{bool}{IsOk}{\void}
-Returns TRUE if bitmap data is present.
+Returns true if bitmap data is present.
-\membersection{wxBitmap::RemoveHandler}
+\membersection{wxBitmap::RemoveHandler}\label{wxbitmapremovehandler}
\func{static bool}{RemoveHandler}{\param{const wxString\& }{name}}
\wxheading{Return value}
-TRUE if the handler was found and removed, FALSE otherwise.
+true if the handler was found and removed, false otherwise.
\wxheading{See also}
\membersection{wxBitmap::SaveFile}\label{wxbitmapsavefile}
-\func{bool}{SaveFile}{\param{const wxString\& }{name}, \param{int}{ type}, \param{wxPalette* }{palette = NULL}}
+\func{bool}{SaveFile}{\param{const wxString\& }{name}, \param{wxBitmapType}{ type}, \param{wxPalette* }{palette = NULL}}
Saves a bitmap in the named file.
\twocolitem{{\bf wxBITMAP\_TYPE\_XPM}}{Save an XPM bitmap file.}
\end{twocollist}
-The validity of these flags depends on the platform and wxWindows configuration.
+The validity of these flags depends on the platform and wxWidgets configuration.
-In addition, wxBitmap can save all formats that \helpref{wxImage}{wximage} can
+In addition, wxBitmap can save all formats that \helpref{wxImage}{wximage} can
(wxBITMAP\_TYPE\_JPEG, wxBITMAP\_TYPE\_PNG).
(Of course you must have wxImage handlers loaded.) }
\wxheading{Return value}
-TRUE if the operation succeeded, FALSE otherwise.
+true if the operation succeeded, false otherwise.
\wxheading{Remarks}
-Depending on how wxWindows has been configured, not all formats may be available.
+Depending on how wxWidgets has been configured, not all formats may be available.
\wxheading{See also}
\helpref{wxBitmap::GetMask}{wxbitmapgetmask}, \helpref{wxMask}{wxmask}
%% VZ: this function is an implementation detail and shouldn't be documented
-%%\membersection{wxBitmap::SetOk}
+%%\membersection{wxBitmap::SetOk}\label{wxbitmapsetok}
%%
%%\func{void}{SetOk}{\param{int }{isOk}}
%%
\func{void}{SetPalette}{\param{const wxPalette\& }{palette}}
-Sets the associated palette.
+Sets the associated palette. (Not implemented under GTK+).
\wxheading{Parameters}
\helpref{wxPalette}{wxpalette}
-\membersection{wxBitmap::SetWidth}
+\membersection{wxBitmap::SetWidth}\label{wxbitmapsetwidth}
\func{void}{SetWidth}{\param{int }{width}}
\docparam{width}{Bitmap width in pixels.}
-\membersection{wxBitmap::operator $=$}
+\membersection{wxBitmap::operator $=$}\label{wxbitmapassign}
\func{wxBitmap\& }{operator $=$}{\param{const wxBitmap\& }{bitmap}}
-Assignment operator. This operator does not copy any data, but instead
-passes a pointer to the data in {\it bitmap} and increments a reference
-counter. It is a fast operation.
+Assignment operator, using \helpref{reference counting}{trefcount}.
\wxheading{Parameters}
Returns 'this' object.
-\membersection{wxBitmap::operator $==$}
-
-\func{bool}{operator $==$}{\param{const wxBitmap\& }{bitmap}}
-
-Equality operator. This operator tests whether the internal data pointers are
-equal (a fast test).
-
-\wxheading{Parameters}
-
-\docparam{bitmap}{Bitmap to compare with 'this'}
-
-\wxheading{Return value}
-
-Returns TRUE if the bitmaps were effectively equal, FALSE otherwise.
-
-\membersection{wxBitmap::operator $!=$}
-
-\func{bool}{operator $!=$}{\param{const wxBitmap\& }{bitmap}}
-
-Inequality operator. This operator tests whether the internal data pointers are
-unequal (a fast test).
-
-\wxheading{Parameters}
-
-\docparam{bitmap}{Bitmap to compare with 'this'}
-
-\wxheading{Return value}
-
-Returns TRUE if the bitmaps were unequal, FALSE otherwise.
-
-\section{\class{wxBitmapHandler}}\label{wxbitmaphandler}
-
-\overview{Overview}{wxbitmapoverview}
-
-This is the base class for implementing bitmap file loading/saving, and bitmap creation from data.
-It is used within wxBitmap and is not normally seen by the application.
-
-If you wish to extend the capabilities of wxBitmap, derive a class from wxBitmapHandler
-and add the handler using \helpref{wxBitmap::AddHandler}{wxbitmapaddhandler} in your
-application initialisation.
-
-\wxheading{Derived from}
-
-\helpref{wxObject}{wxobject}
-
-\wxheading{Include files}
-
-<wx/bitmap.h>
-
-\wxheading{See also}
-
-\helpref{wxBitmap}{wxbitmap}, \helpref{wxIcon}{wxicon}, \helpref{wxCursor}{wxcursor}
-
-\latexignore{\rtfignore{\wxheading{Members}}}
-
-\membersection{wxBitmapHandler::wxBitmapHandler}\label{wxbitmaphandlerconstr}
-
-\func{}{wxBitmapHandler}{\void}
-
-Default constructor. In your own default constructor, initialise the members
-m\_name, m\_extension and m\_type.
-
-\membersection{wxBitmapHandler::\destruct{wxBitmapHandler}}
-
-\func{}{\destruct{wxBitmapHandler}}{\void}
-
-Destroys the wxBitmapHandler object.
-
-\membersection{wxBitmapHandler::Create}
-
-\func{virtual bool}{Create}{\param{wxBitmap* }{bitmap}, \param{void*}{ data}, \param{int}{ type}, \param{int}{ width}, \param{int}{ height}, \param{int}{ depth = -1}}
-
-Creates a bitmap from the given data, which can be of arbitrary type. The wxBitmap object {\it bitmap} is
-manipulated by this function.
-
-\wxheading{Parameters}
-
-\docparam{bitmap}{The wxBitmap object.}
-
-\docparam{width}{The width of the bitmap in pixels.}
-
-\docparam{height}{The height of the bitmap in pixels.}
-
-\docparam{depth}{The depth of the bitmap in pixels. If this is -1, the screen depth is used.}
-
-\docparam{data}{Data whose type depends on the value of {\it type}.}
-
-\docparam{type}{A bitmap type identifier - see \helpref{wxBitmapHandler::wxBitmapHandler}{wxbitmapconstr} for a list
-of possible values.}
-
-\wxheading{Return value}
-
-TRUE if the call succeeded, FALSE otherwise (the default).
-
-\membersection{wxBitmapHandler::GetName}
-
-\constfunc{wxString}{GetName}{\void}
-
-Gets the name of this handler.
-
-\membersection{wxBitmapHandler::GetExtension}
-
-\constfunc{wxString}{GetExtension}{\void}
-
-Gets the file extension associated with this handler.
-
-\membersection{wxBitmapHandler::GetType}
-
-\constfunc{long}{GetType}{\void}
-
-Gets the bitmap type associated with this handler.
-
-\membersection{wxBitmapHandler::LoadFile}\label{wxbitmaphandlerloadfile}
-
-\func{bool}{LoadFile}{\param{wxBitmap* }{bitmap}, \param{const wxString\&}{ name}, \param{long}{ type}}
-
-Loads a bitmap from a file or resource, putting the resulting data into {\it bitmap}.
-
-\wxheading{Parameters}
-
-\docparam{bitmap}{The bitmap object which is to be affected by this operation.}
-
-\docparam{name}{Either a filename or a Windows resource name.
-The meaning of {\it name} is determined by the {\it type} parameter.}
-
-\docparam{type}{See \helpref{wxBitmap::wxBitmap}{wxbitmapconstr} for values this can take.}
-
-\wxheading{Return value}
-
-TRUE if the operation succeeded, FALSE otherwise.
-
-\wxheading{See also}
-
-\helpref{wxBitmap::LoadFile}{wxbitmaploadfile}\\
-\helpref{wxBitmap::SaveFile}{wxbitmapsavefile}\\
-\helpref{wxBitmapHandler::SaveFile}{wxbitmaphandlersavefile}
-
-\membersection{wxBitmapHandler::SaveFile}\label{wxbitmaphandlersavefile}
-
-\func{bool}{SaveFile}{\param{wxBitmap* }{bitmap}, \param{const wxString\& }{name}, \param{int}{ type}, \param{wxPalette* }{palette = NULL}}
-
-Saves a bitmap in the named file.
-
-\wxheading{Parameters}
-
-\docparam{bitmap}{The bitmap object which is to be affected by this operation.}
-
-\docparam{name}{A filename. The meaning of {\it name} is determined by the {\it type} parameter.}
-
-\docparam{type}{See \helpref{wxBitmap::wxBitmap}{wxbitmapconstr} for values this can take.}
-
-\docparam{palette}{An optional palette used for saving the bitmap.}
-
-\wxheading{Return value}
-
-TRUE if the operation succeeded, FALSE otherwise.
-
-\wxheading{See also}
-
-\helpref{wxBitmap::LoadFile}{wxbitmaploadfile}\\
-\helpref{wxBitmap::SaveFile}{wxbitmapsavefile}\\
-\helpref{wxBitmapHandler::LoadFile}{wxbitmaphandlerloadfile}
-
-\membersection{wxBitmapHandler::SetName}
-
-\func{void}{SetName}{\param{const wxString\& }{name}}
-
-Sets the handler name.
-
-\wxheading{Parameters}
-
-\docparam{name}{Handler name.}
-
-\membersection{wxBitmapHandler::SetExtension}
-
-\func{void}{SetExtension}{\param{const wxString\& }{extension}}
-
-Sets the handler extension.
-
-\wxheading{Parameters}
-
-\docparam{extension}{Handler extension.}
-
-\membersection{wxBitmapHandler::SetType}
-
-\func{void}{SetType}{\param{long }{type}}
-
-Sets the handler type.
-
-\wxheading{Parameters}
-
-\docparam{name}{Handler type.}
-
projects / wxWidgets.git / blobdiff