remove unused variable assignment, closes #14928

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

diff --git a/include/wx/bitmap.h b/include/wx/bitmap.h
index b78cc41a36076c74b4dbf6cb5496e14fe6a7b4c3..fc2110755b3fb6474bcd784338d1366c5e3596ea 100644 (file)
--- a/include/wx/bitmap.h
+++ b/include/wx/bitmap.h
@@ -19,11 +19,11 @@
 #include "wx/string.h"
 #include "wx/gdicmn.h"  // for wxBitmapType
 #include "wx/colour.h"
+#include "wx/image.h"
 
 class WXDLLIMPEXP_FWD_CORE wxBitmap;
 class WXDLLIMPEXP_FWD_CORE wxBitmapHandler;
 class WXDLLIMPEXP_FWD_CORE wxIcon;
-class WXDLLIMPEXP_FWD_CORE wxImage;
 class WXDLLIMPEXP_FWD_CORE wxMask;
 class WXDLLIMPEXP_FWD_CORE wxPalette;
 
@@ -68,8 +68,7 @@ protected:
     virtual bool InitFromMonoBitmap(const wxBitmap& bitmap) = 0;
 };
 
-#if defined(__WXMGL__) || \
-    defined(__WXDFB__) || \
+#if defined(__WXDFB__) || \
     defined(__WXMAC__) || \
     defined(__WXGTK__) || \
     defined(__WXCOCOA__) || \
@@ -84,9 +83,26 @@ protected:
 #define wxBITMAP_SCREEN_DEPTH       (-1)
 
 
-// All ports except wxMSW,wxOS2,wxPalmOS use wxBitmapHandler and wxBitmapBase as base class
-// for wxBitmapHandler; wxMSW,wxOS2,wxPalmOS use wxGDIImageHandler as base class
-// since it allows some code reuse there.
+// ----------------------------------------------------------------------------
+// wxBitmapHelpers: container for various bitmap methods common to all ports.
+// ----------------------------------------------------------------------------
+
+// Unfortunately, currently wxBitmap does not inherit from wxBitmapBase on all
+// platforms and this is not easy to fix. So we extract at least some common
+// methods into this class from which both wxBitmapBase (and hence wxBitmap on
+// all platforms where it does inherit from it) and wxBitmap in wxMSW and other
+// exceptional ports (only wxPM and old wxCocoa) inherit.
+class WXDLLIMPEXP_CORE wxBitmapHelpers
+{
+public:
+    // Create a new wxBitmap from the PNG data in the given buffer.
+    static wxBitmap NewFromPNGData(const void* data, size_t size);
+};
+
+
+// All ports except wxMSW and wxOS2 use wxBitmapHandler and wxBitmapBase as
+// base class for wxBitmapHandler; wxMSW and wxOS2 use wxGDIImageHandler as
+// base class since it allows some code reuse there.
 #if wxUSE_BITMAP_BASE
 
 // ----------------------------------------------------------------------------
@@ -133,12 +149,12 @@ private:
     DECLARE_ABSTRACT_CLASS(wxBitmapHandler)
 };
 
-
 // ----------------------------------------------------------------------------
 // wxBitmap: class which represents platform-dependent bitmap (unlike wxImage)
 // ----------------------------------------------------------------------------
 
-class WXDLLIMPEXP_CORE wxBitmapBase : public wxGDIObject
+class WXDLLIMPEXP_CORE wxBitmapBase : public wxGDIObject,
+                                      public wxBitmapHelpers
 {
 public:
     /*
@@ -148,6 +164,7 @@ public:
     wxBitmap(const wxBitmap& bmp);
     wxBitmap(const char bits[], int width, int height, int depth = 1);
     wxBitmap(int width, int height, int depth = wxBITMAP_SCREEN_DEPTH);
+    wxBitmap(const wxSize& sz, int depth = wxBITMAP_SCREEN_DEPTH);
     wxBitmap(const char* const* bits);
     wxBitmap(const wxString &filename, wxBitmapType type = wxBITMAP_TYPE_XPM);
     wxBitmap(const wxImage& image, int depth = wxBITMAP_SCREEN_DEPTH);
@@ -156,13 +173,20 @@ public:
     */
 
     virtual bool Create(int width, int height, int depth = wxBITMAP_SCREEN_DEPTH) = 0;
+    virtual bool Create(const wxSize& sz, int depth = wxBITMAP_SCREEN_DEPTH) = 0;
 
     virtual int GetHeight() const = 0;
     virtual int GetWidth() const = 0;
     virtual int GetDepth() const = 0;
 
+    wxSize GetSize() const
+        { return wxSize(GetWidth(), GetHeight()); }
+
 #if wxUSE_IMAGE
     virtual wxImage ConvertToImage() const = 0;
+
+    // Convert to disabled (dimmed) bitmap.
+    wxBitmap ConvertToDisabled(unsigned char brightness = 255) const;
 #endif // wxUSE_IMAGE
 
     virtual wxMask *GetMask() const = 0;
@@ -171,7 +195,7 @@ public:
     virtual wxBitmap GetSubBitmap(const wxRect& rect) const = 0;
 
     virtual bool SaveFile(const wxString &name, wxBitmapType type,
-                          const wxPalette *palette = (wxPalette *)NULL) const = 0;
+                          const wxPalette *palette = NULL) const = 0;
     virtual bool LoadFile(const wxString &name, wxBitmapType type) = 0;
 
     /*
@@ -229,17 +253,18 @@ protected:
 
 // the wxBITMAP_DEFAULT_TYPE constant defines the default argument value
 // for wxBitmap's ctor and wxBitmap::LoadFile() functions.
-#if defined(__WXPALMOS__)
-    #define wxBITMAP_DEFAULT_TYPE    wxBITMAP_TYPE_BMP_RESOURCE
-    #include "wx/palmos/bitmap.h"
-#elif defined(__WXMSW__)
+#if defined(__WXMSW__)
     #define wxBITMAP_DEFAULT_TYPE    wxBITMAP_TYPE_BMP_RESOURCE
     #include "wx/msw/bitmap.h"
 #elif defined(__WXMOTIF__)
     #define wxBITMAP_DEFAULT_TYPE    wxBITMAP_TYPE_XPM
     #include "wx/x11/bitmap.h"
 #elif defined(__WXGTK20__)
-    #define wxBITMAP_DEFAULT_TYPE    wxBITMAP_TYPE_XPM
+    #ifdef __WINDOWS__
+        #define wxBITMAP_DEFAULT_TYPE    wxBITMAP_TYPE_BMP_RESOURCE
+    #else
+        #define wxBITMAP_DEFAULT_TYPE    wxBITMAP_TYPE_XPM
+    #endif
     #include "wx/gtk/bitmap.h"
 #elif defined(__WXGTK__)
     #define wxBITMAP_DEFAULT_TYPE    wxBITMAP_TYPE_XPM
@@ -247,11 +272,8 @@ protected:
 #elif defined(__WXX11__)
     #define wxBITMAP_DEFAULT_TYPE    wxBITMAP_TYPE_XPM
     #include "wx/x11/bitmap.h"
-#elif defined(__WXMGL__)
-    #define wxBITMAP_DEFAULT_TYPE    wxBITMAP_TYPE_RESOURCE
-    #include "wx/mgl/bitmap.h"
 #elif defined(__WXDFB__)
-    #define wxBITMAP_DEFAULT_TYPE    wxBITMAP_TYPE_RESOURCE
+    #define wxBITMAP_DEFAULT_TYPE    wxBITMAP_TYPE_BMP_RESOURCE
     #include "wx/dfb/bitmap.h"
 #elif defined(__WXMAC__)
     #define wxBITMAP_DEFAULT_TYPE    wxBITMAP_TYPE_PICT_RESOURCE
@@ -264,8 +286,22 @@ protected:
     #include "wx/os2/bitmap.h"
 #endif
 
+#if wxUSE_IMAGE
+inline
+wxBitmap
+#if wxUSE_BITMAP_BASE
+wxBitmapBase::
+#else
+wxBitmap::
+#endif
+ConvertToDisabled(unsigned char brightness) const
+{
+    return ConvertToImage().ConvertToDisabled(brightness);
+}
+#endif // wxUSE_IMAGE
+
 // we must include generic mask.h after wxBitmap definition
-#if defined(__WXMGL__) || defined(__WXDFB__)
+#if defined(__WXDFB__)
     #define wxUSE_GENERIC_MASK 1
 #else
     #define wxUSE_GENERIC_MASK 0