make more wxImage methods const

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@14062 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

diff --git a/include/wx/image.h b/include/wx/image.h
index eaeb0f085f7278369c0610cd4b8c583b1df390ef..14530e58bcde8379899ca69d4131d93e418b1e0f 100644 (file)
--- a/include/wx/image.h
+++ b/include/wx/image.h
@@ -168,7 +168,7 @@ public:
     // RGB values than <startR,startG,startB>
     bool FindFirstUnusedColour( unsigned char *r, unsigned char *g, unsigned char *b,
                                 unsigned char startR = 1, unsigned char startG = 0,
-                                unsigned char startB = 0 );
+                                unsigned char startB = 0 ) const;
     // Set image's mask to the area of 'mask' that has <r,g,b> colour
     bool SetMaskFromImage(const wxImage & mask,
                           unsigned char mr, unsigned char mg, unsigned char mb);
@@ -185,12 +185,12 @@ public:
     virtual bool LoadFile( wxInputStream& stream, const wxString& mimetype, int index = -1 );
 #endif
 
-    virtual bool SaveFile( const wxString& name, int type );
-    virtual bool SaveFile( const wxString& name, const wxString& mimetype );
+    virtual bool SaveFile( const wxString& name, int type ) const;
+    virtual bool SaveFile( const wxString& name, const wxString& mimetype ) const;
 
 #if wxUSE_STREAMS
-    virtual bool SaveFile( wxOutputStream& stream, int type );
-    virtual bool SaveFile( wxOutputStream& stream, const wxString& mimetype );
+    virtual bool SaveFile( wxOutputStream& stream, int type ) const;
+    virtual bool SaveFile( wxOutputStream& stream, const wxString& mimetype ) const;
 #endif
 
     bool Ok() const;
@@ -223,7 +223,7 @@ public:
     int GetOptionInt(const wxString& name) const;
     bool HasOption(const wxString& name) const;
 
-    unsigned long CountColours( unsigned long stopafter = (unsigned long) -1 );
+    unsigned long CountColours( unsigned long stopafter = (unsigned long) -1 ) const;
 
     // Computes the histogram of the image and fills a hash table, indexed
     // with integer keys built as 0xRRGGBB, containing wxImageHistogramEntry
@@ -231,7 +231,7 @@ public:
     // with the image colours) and a 'value', which is the number of pixels 
     // in the image with that colour.
     // Returned value: # of entries in the histogram
-    unsigned long ComputeHistogram( wxImageHistogram &h );
+    unsigned long ComputeHistogram( wxImageHistogram &h ) const;
 
     wxImage& operator = (const wxImage& image)
     {

diff --git a/src/common/image.cpp b/src/common/image.cpp
index addb165539e0a4344d9bae29a10e728e269b799d..48b39581f5a6a69f1d13687d93e268061fb44db7 100644 (file)
--- a/src/common/image.cpp
+++ b/src/common/image.cpp
@@ -723,7 +723,7 @@ int wxImage::GetHeight() const
 
 bool wxImage::FindFirstUnusedColour(
             unsigned char *r, unsigned char *g, unsigned char *b,
-            unsigned char startR, unsigned char startG, unsigned char startB)
+            unsigned char startR, unsigned char startG, unsigned char startB) const
 {
     wxImageHistogram histogram;
     unsigned long key;
@@ -930,7 +930,7 @@ bool wxImage::LoadFile( const wxString& filename, const wxString& mimetype, int
 #endif // wxUSE_STREAMS
 }
 
-bool wxImage::SaveFile( const wxString& filename, int type )
+bool wxImage::SaveFile( const wxString& filename, int type ) const
 {
 #if wxUSE_STREAMS
     wxFileOutputStream stream(filename);
@@ -945,7 +945,7 @@ bool wxImage::SaveFile( const wxString& filename, int type )
     return FALSE;
 }
 
-bool wxImage::SaveFile( const wxString& filename, const wxString& mimetype )
+bool wxImage::SaveFile( const wxString& filename, const wxString& mimetype ) const
 {
 #if wxUSE_STREAMS
     wxFileOutputStream stream(filename);
@@ -1089,7 +1089,7 @@ bool wxImage::LoadFile( wxInputStream& stream, const wxString& mimetype, int ind
     return handler->LoadFile( this, stream, TRUE/*verbose*/, index );
 }
 
-bool wxImage::SaveFile( wxOutputStream& stream, int type )
+bool wxImage::SaveFile( wxOutputStream& stream, int type ) const
 {
     wxCHECK_MSG( Ok(), FALSE, wxT("invalid image") );
 
@@ -1102,10 +1102,10 @@ bool wxImage::SaveFile( wxOutputStream& stream, int type )
         return FALSE;
     }
 
-    return handler->SaveFile( this, stream );
+    return handler->SaveFile( (wxImage*)this, stream );
 }
 
-bool wxImage::SaveFile( wxOutputStream& stream, const wxString& mimetype )
+bool wxImage::SaveFile( wxOutputStream& stream, const wxString& mimetype ) const
 {
     wxCHECK_MSG( Ok(), FALSE, wxT("invalid image") );
 
@@ -1118,7 +1118,7 @@ bool wxImage::SaveFile( wxOutputStream& stream, const wxString& mimetype )
         return FALSE;
     }
 
-    return handler->SaveFile( this, stream );
+    return handler->SaveFile( (wxImage*)this, stream );
 }
 #endif // wxUSE_STREAMS
 
@@ -1322,7 +1322,7 @@ IMPLEMENT_DYNAMIC_CLASS(wxImageModule, wxModule)
 // less, in this case it would be invoked as CountColours(256)). Default
 // value for stopafter is -1 (don't care).
 //
-unsigned long wxImage::CountColours( unsigned long stopafter )
+unsigned long wxImage::CountColours( unsigned long stopafter ) const
 {
     wxHashTable h;
     wxObject dummy;
@@ -1352,7 +1352,7 @@ unsigned long wxImage::CountColours( unsigned long stopafter )
 }
 
 
-unsigned long wxImage::ComputeHistogram( wxImageHistogram &h )
+unsigned long wxImage::ComputeHistogram( wxImageHistogram &h ) const
 {
     unsigned char r, g, b;
     unsigned char *p;