We need a char, not wxChar.

[wxWidgets.git] / src / common / image.cpp

diff --git a/src/common/image.cpp b/src/common/image.cpp
index a5f3c35f484e78acf5247319c01815ec9d5eb02e..784a016b94210942efce04a431dab95838df4a97 100644 (file)
--- a/src/common/image.cpp
+++ b/src/common/image.cpp
@@ -110,10 +110,6 @@ wxImage wxNullImage;
 
 IMPLEMENT_DYNAMIC_CLASS(wxImage, wxObject)
 
-wxImage::wxImage()
-{
-}
-
 wxImage::wxImage( int width, int height, bool clear )
 {
     Create( width, height, clear );
@@ -231,7 +227,7 @@ wxImage wxImage::ShrinkBy( int xFactor , int yFactor ) const
 {
     if( xFactor == 1 && yFactor == 1 )
         return Copy() ;
-        
+
     wxImage image;
 
     wxCHECK_MSG( Ok(), image, wxT("invalid image") );
@@ -242,7 +238,7 @@ wxImage wxImage::ShrinkBy( int xFactor , int yFactor ) const
 
     long old_height = M_IMGDATA->m_height,
          old_width  = M_IMGDATA->m_width;
-         
+
     wxCHECK_MSG( (old_height > 0) && (old_width > 0), image,
                  wxT("invalid old image size") );
 
@@ -265,14 +261,14 @@ wxImage wxImage::ShrinkBy( int xFactor , int yFactor ) const
         maskRed = M_IMGDATA->m_maskRed;
         maskGreen = M_IMGDATA->m_maskGreen;
         maskBlue =M_IMGDATA->m_maskBlue ;
-      
+
         image.SetMaskColour( M_IMGDATA->m_maskRed,
                              M_IMGDATA->m_maskGreen,
                              M_IMGDATA->m_maskBlue );
     }
     char unsigned *source_data = M_IMGDATA->m_data;
     char unsigned *target_data = data;
-    
+
     for (long y = 0; y < height; y++)
     {
         for (long x = 0; x < width; x++)
@@ -796,7 +792,7 @@ void wxImage::SetAlpha(int x, int y, unsigned char alpha)
     M_IMGDATA->m_alpha[y*w + x] = alpha;
 }
 
-unsigned char wxImage::GetAlpha(int x, int y)
+unsigned char wxImage::GetAlpha(int x, int y) const
 {
     wxCHECK_MSG( Ok() && HasAlpha(), 0, wxT("invalid image or no alpha channel") );
 
@@ -817,7 +813,7 @@ void wxImage::SetAlpha( unsigned char *alpha )
         alpha = (unsigned char *)malloc(M_IMGDATA->m_width*M_IMGDATA->m_height);
     }
 
-    delete [] M_IMGDATA->m_alpha;
+    free(M_IMGDATA->m_alpha);
     M_IMGDATA->m_alpha = alpha;
 }
 
@@ -897,7 +893,7 @@ bool wxImage::SetMaskFromImage(const wxImage& mask,
     // check that the images are the same size
     if ( (M_IMGDATA->m_height != mask.GetHeight() ) || (M_IMGDATA->m_width != mask.GetWidth () ) )
     {
-        wxLogError( _("Image and Mask have different sizes") );
+        wxLogError( _("Image and mask have different sizes.") );
         return false;
     }
 
@@ -905,7 +901,7 @@ bool wxImage::SetMaskFromImage(const wxImage& mask,
     unsigned char r,g,b ;
     if (!FindFirstUnusedColour(&r, &g, &b))
     {
-        wxLogError( _("No Unused Color in image being masked") );
+        wxLogError( _("No unused colour in image being masked.") );
         return false ;
     }
 
@@ -936,6 +932,46 @@ bool wxImage::SetMaskFromImage(const wxImage& mask,
     return true;
 }
 
+bool wxImage::ConvertAlphaToMask(unsigned char threshold)
+{
+    if (!HasAlpha())
+        return true;
+
+    unsigned char mr, mg, mb;
+    if (!FindFirstUnusedColour(&mr, &mg, &mb))
+    {
+        wxLogError( _("No unused colour in image being masked.") );
+        return false;
+    }
+
+    SetMask(true);
+    SetMaskColour(mr, mg, mb);
+
+    unsigned char *imgdata = GetData();
+    unsigned char *alphadata = GetAlpha();
+
+    int w = GetWidth();
+    int h = GetHeight();
+
+    for (int y = 0; y < h; y++)
+    {
+        for (int x = 0; x < w; x++, imgdata += 3, alphadata++)
+        {
+            if (*alphadata < threshold)
+            {
+                imgdata[0] = mr;
+                imgdata[1] = mg;
+                imgdata[2] = mb;
+            }
+        }
+    }
+
+    free(M_IMGDATA->m_alpha);
+    M_IMGDATA->m_alpha = NULL;
+
+    return true;
+}
+
 #if wxUSE_PALETTE
 
 // Palette functions
@@ -1445,7 +1481,7 @@ bool wxImageHandler::CanRead( const wxString& name )
 
 bool wxImageHandler::CallDoCanRead(wxInputStream& stream)
 {
-    off_t posOld = stream.TellI();
+    wxFileSize_t posOld = stream.TellI();
     if ( posOld == wxInvalidOffset )
     {
         // can't test unseekable stream
@@ -1496,7 +1532,7 @@ wxImageHistogram::FindFirstUnusedColour(unsigned char *r,
                 b2++;
                 if ( b2 >= 255 )
                 {
-                    wxLogError(_("GetUnusedColour:: No Unused Color in image ") );
+                    wxLogError(_("No unused colour in image.") );
                     return false;
                 }
             }