Recognize VC12 (a.k.a. MSVS 2013) and define __VISUALC12__ for it.

[wxWidgets.git] / interface / wx / bitmap.h

diff --git a/interface/wx/bitmap.h b/interface/wx/bitmap.h
index 2a2d6b5cb80008d549588d10b42c734ba68f5969..5b6e27864422ff7e67a94e6285d40f7d2664fabb 100644 (file)
--- a/interface/wx/bitmap.h
+++ b/interface/wx/bitmap.h
@@ -165,7 +165,7 @@ public:
     If you need direct access the bitmap data instead going through
     drawing to it using wxMemoryDC you need to use the wxPixelData
     class (either wxNativePixelData for RGB bitmaps or wxAlphaPixelData
-    for bitmaps with an additionaly alpha channel).
+    for bitmaps with an additionally alpha channel).
 
     Note that many wxBitmap functions take a @e type parameter, which is a 
     value of the ::wxBitmapType enumeration.
@@ -183,6 +183,17 @@ public:
     Note that all available wxBitmapHandlers for a given wxWidgets port are 
     automatically loaded at startup so you won't need to use wxBitmap::AddHandler.
 
+    More on the difference between wxImage and wxBitmap: wxImage is just a
+    buffer of RGB bytes with an optional buffer for the alpha bytes. It is all
+    generic, platform independent and image file format independent code. It
+    includes generic code for scaling, resizing, clipping, and other manipulations
+    of the image data. OTOH, wxBitmap is intended to be a wrapper of whatever is
+    the native image format that is quickest/easiest to draw to a DC or to be the
+    target of the drawing operations performed on a wxMemoryDC. By splitting the
+    responsibilities between wxImage/wxBitmap like this then it's easier to use
+    generic code shared by all platforms and image types for generic operations and
+    platform specific code where performance or compatibility is needed.
+
     @library{wxcore}
     @category{gdi}
 
@@ -508,6 +519,9 @@ public:
 
     /**
         Returns disabled (dimmed) version of the bitmap.
+
+        This method is not available when <code>wxUSE_IMAGE == 0</code>.
+
         @since 2.9.0
     */
     wxBitmap ConvertToDisabled(unsigned char brightness = 255) const;
@@ -570,6 +584,31 @@ public:
     */
     virtual bool LoadFile(const wxString& name, wxBitmapType type = wxBITMAP_DEFAULT_TYPE);
 
+    /**
+        Loads a bitmap from the memory containing image data in PNG format.
+
+        This helper function provides the simplest way to create a wxBitmap
+        from PNG image data. On most platforms, it's simply a wrapper around
+        wxImage loading functions and so requires the PNG image handler to be
+        registered by either calling wxInitAllImageHandlers() which also
+        registers all the other image formats or including the necessary
+        header:
+        @code
+            #include <wx/imagpng.h>
+        @endcode
+        and calling
+        @code
+            wxImage::AddHandler(new wxPNGHandler);
+        @endcode
+        in your application startup code.
+
+        However under OS X this function uses native image loading and so
+        doesn't require wxWidgets PNG support.
+
+        @since 2.9.5
+     */
+    static wxBitmap NewFromPNGData(const void* data, size_t size);
+
     /**
         Finds the handler with the given name, and removes it.
         The handler is not deleted.
@@ -696,19 +735,11 @@ public:
 
     /**
         Constructs a mask from a monochrome bitmap.
-
-        @beginWxPythonOnly
-        This is the default constructor for wxMask in wxPython.
-        @endWxPythonOnly
     */
     wxMask(const wxBitmap& bitmap);
 
     /**
         Constructs a mask from a bitmap and a colour that indicates the background.
-
-        @beginWxPythonOnly
-        wxPython has an alternate wxMask constructor matching this form called wxMaskColour.
-        @endWxPythonOnly
     */
     wxMask(const wxBitmap& bitmap, const wxColour& colour);
 
@@ -738,5 +769,13 @@ public:
         Constructs a mask from a bitmap and a colour that indicates the background.
     */
     bool Create(const wxBitmap& bitmap, const wxColour& colour);
+
+    /**
+        Returns the mask as a monochrome bitmap.
+        Currently this method is implemented in wxMSW, wxGTK and wxOSX.
+
+        @since 2.9.5
+    */
+    wxBitmap GetBitmap() const;
 };