Common code for the same handling of wxSL_INVERSE.

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

diff --git a/include/wx/image.h b/include/wx/image.h
index 153065c764b3cb2a537929c65d164d9a26e439bf..6fb884955b062e61ec306cf1a72bd836aafffd03 100644 (file)
--- a/include/wx/image.h
+++ b/include/wx/image.h
@@ -52,8 +52,8 @@ public:
         { }
 
 #if wxUSE_STREAMS
-    virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=TRUE, int index=-1 );
-    virtual bool SaveFile( wxImage *image, wxOutputStream& stream, bool verbose=TRUE );
+    virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=true, int index=-1 );
+    virtual bool SaveFile( wxImage *image, wxOutputStream& stream, bool verbose=true );
 
     virtual int GetImageCount( wxInputStream& stream );
 
@@ -136,9 +136,10 @@ public:
 class WXDLLEXPORT wxImage: public wxObject
 {
 public:
-    wxImage();
+    wxImage(){}
     wxImage( int width, int height, bool clear = true );
-    wxImage( int width, int height, unsigned char* data, bool static_data = FALSE );
+    wxImage( int width, int height, unsigned char* data, bool static_data = false );
+    wxImage( int width, int height, unsigned char* data, unsigned char* alpha, bool static_data = false );
     wxImage( const wxString& name, long type = wxBITMAP_TYPE_ANY, int index = -1 );
     wxImage( const wxString& name, const wxString& mimetype, int index = -1 );
 
@@ -151,7 +152,8 @@ public:
     wxImage( const wxImage* image );
 
     bool Create( int width, int height, bool clear = true );
-    bool Create( int width, int height, unsigned char* data, bool static_data = FALSE );
+    bool Create( int width, int height, unsigned char* data, bool static_data = false );
+    bool Create( int width, int height, unsigned char* data, unsigned char* alpha, bool static_data = false );
     void Destroy();
 
     // creates an identical copy of the image (the = operator
@@ -176,10 +178,10 @@ public:
     // Rotates the image about the given point, 'angle' radians.
     // Returns the rotated image, leaving this image intact.
     wxImage Rotate(double angle, const wxPoint & centre_of_rotation,
-                   bool interpolating = TRUE, wxPoint * offset_after_rotation = (wxPoint*) NULL) const;
+                   bool interpolating = true, wxPoint * offset_after_rotation = (wxPoint*) NULL) const;
 
-    wxImage Rotate90( bool clockwise = TRUE ) const;
-    wxImage Mirror( bool horizontally = TRUE ) const;
+    wxImage Rotate90( bool clockwise = true ) const;
+    wxImage Mirror( bool horizontally = true ) const;
 
     // replace one colour with another
     void Replace( unsigned char r1, unsigned char g1, unsigned char b1,
@@ -211,6 +213,18 @@ public:
     // otherwise:
     bool ConvertAlphaToMask(unsigned char threshold = 128);
 
+    // This method converts an image where the original alpha
+    // information is only available as a shades of a colour
+    // (actually shades of grey) typically when you draw anti-
+    // aliased text into a bitmap. The DC drawinf routines
+    // draw grey values on the black background although they
+    // actually mean to draw white with differnt alpha values.
+    // This method reverses it, assuming a black (!) background
+    // and white text (actually only the red channel is read).
+    // The method will then fill up the whole image with the
+    // colour given.
+    bool ConvertColourToAlpha( unsigned char r, unsigned char g, unsigned char b );
+
     static bool CanRead( const wxString& name );
     static int GetImageCount( const wxString& name, long type = wxBITMAP_TYPE_ANY );
     virtual bool LoadFile( const wxString& name, long type = wxBITMAP_TYPE_ANY, int index = -1 );
@@ -251,7 +265,7 @@ public:
     unsigned char GetMaskRed() const;
     unsigned char GetMaskGreen() const;
     unsigned char GetMaskBlue() const;
-    void SetMask( bool mask = TRUE );
+    void SetMask( bool mask = true );
     bool HasMask() const;
 
 #if wxUSE_PALETTE
@@ -316,7 +330,7 @@ private:
 
 extern void WXDLLEXPORT wxInitAllImageHandlers();
 
-WXDLLEXPORT_DATA(extern wxImage)    wxNullImage;
+extern WXDLLEXPORT_DATA(wxImage)    wxNullImage;
 
 //-----------------------------------------------------------------------------
 // wxImage handlers