fix comparison of BYTE variable with -1 after last commit

[wxWidgets.git] / include / wx / rawbmp.h

diff --git a/include/wx/rawbmp.h b/include/wx/rawbmp.h
index 1595183e51a05d72ae6003d6df9f584fdb2f0e01..3e599a602b287855d457b70de368a9f31d7cb957 100644 (file)
--- a/include/wx/rawbmp.h
+++ b/include/wx/rawbmp.h
@@ -9,8 +9,8 @@
 // Licence:     wxWindows licence
 ///////////////////////////////////////////////////////////////////////////////
 
-#ifndef _WX_RAWBMP_H_BASE_
-#define _WX_RAWBMP_H_BASE_
+#ifndef _WX_RAWBMP_H_
+#define _WX_RAWBMP_H_
 
 #include "wx/image.h"
 
@@ -71,12 +71,6 @@
     }
  */
 
-#ifdef __VISUALC__
-    // VC++ gives an absolutely harmless warning for wxPixelData<wxBitmap> ctor
-    #pragma warning(push)
-    #pragma warning(disable: 4355) // 'this' used in initializer list
-#endif
-
 /*
     Note: we do not use WXDLLEXPORT with classes in this file because VC++ has
     problems with exporting inner class defined inside a specialization of a
@@ -170,9 +164,14 @@ typedef wxPixelFormat<unsigned char, 24, 0, 1, 2> wxImagePixelFormat;
 
     #define wxPIXEL_FORMAT_ALPHA 3
 #elif defined(__WXGTK__)
-    // Under GTK+ 2.X we use GdkPixbuf, which should be RGBA
+    // Under GTK+ 2.X we use GdkPixbuf, which is standard RGB or RGBA
     typedef wxPixelFormat<unsigned char, 24, 0, 1, 2> wxNativePixelFormat;
 
+    #define wxPIXEL_FORMAT_ALPHA 3
+#elif defined(__WXDFB__)
+    // Under DirectFB, RGB components are reversed, they're in BGR order
+    typedef wxPixelFormat<unsigned char, 24, 2, 1, 0> wxNativePixelFormat;
+
     #define wxPIXEL_FORMAT_ALPHA 3
 #endif
 
@@ -526,6 +525,12 @@ struct wxPixelDataOut<wxBitmap>
                             bmp.GetRawData(data, PixelFormat::BitsPerPixel);
             }
 
+            // default constructor
+            Iterator()
+            {
+                m_ptr = NULL;
+            }
+
             // return true if this iterator is valid
             bool IsOk() const { return m_ptr != NULL; }
 
@@ -631,11 +636,22 @@ struct wxPixelDataOut<wxBitmap>
         // dtor unlocks the bitmap
         ~wxPixelDataIn()
         {
-            m_bmp.UngetRawData(*this);
+            if ( m_pixels.IsOk() )
+            {
+#if defined(__WXMSW__) || defined(__WXMAC__)
+                // this is a hack to mark wxBitmap as using alpha channel
+                if ( Format::HasAlpha )
+                    m_bmp.UseAlpha();
+#endif
+                m_bmp.UngetRawData(*this);
+            }
+            // else: don't call UngetRawData() if GetRawData() failed
         }
 
-        // call this to indicate that we should use the alpha channel
-        void UseAlpha() { m_bmp.UseAlpha(); }
+#if WXWIN_COMPATIBILITY_2_8
+        // not needed anymore, calls to it should be simply removed
+        wxDEPRECATED_INLINE( void UseAlpha(), wxEMPTY_PARAMETER_VALUE )
+#endif
 
     // private: -- see comment in the beginning of the file
 
@@ -656,15 +672,8 @@ struct wxPixelDataOut<wxBitmap>
         }
     };
 };
-#endif //wxUSE_GUI
 
-#ifdef __VISUALC__
-    // typedef-name 'foo' used as synonym for class-name 'bar'
-    // (VC++ gives this warning each time wxPixelData::Base is used but it
-    //  doesn't make any sense here -- what's wrong with using typedef instead
-    //  of class, this is what it is here for!)
-    #pragma warning(disable: 4097)
-#endif // __VISUALC__
+#endif //wxUSE_GUI
 
 template <class Image, class PixelFormat = wxPixelFormatFor<Image> >
 class wxPixelData :
@@ -685,7 +694,6 @@ public:
     }
 };
 
-
 // some "predefined" pixel data classes
 #if wxUSE_IMAGE
 typedef wxPixelData<wxImage> wxImagePixelData;
@@ -717,9 +725,4 @@ struct wxPixelIterator : public wxPixelData<Image, PixelFormat>::Iterator
 {
 };
 
-#ifdef __VISUALC__
-    #pragma warning(pop)
-#endif
-
-#endif // _WX_RAWBMP_H_BASE_
-
+#endif // _WX_RAWBMP_H_