+// Helper function, used by wxCreateGreyedImage
+
+static void wxGreyOutImage( const wxImage& src,
+ wxImage& dest,
+ const wxColour& darkCol,
+ const wxColour& lightCol,
+ const wxColour& bgCol )
+{
+ // Second attempt, just making things monochrome
+ int width = src.GetWidth();
+ int height = src.GetHeight();
+
+ int redCur, greenCur, blueCur;
+ for ( int x = 0; x < width; x++ )
+ {
+ for ( int y = 1; y < height; y++ )
+ {
+ redCur = src.GetRed(x, y);
+ greenCur = src.GetGreen(x, y);
+ blueCur = src.GetBlue(x, y);
+
+ // Change light things to the background colour
+ if ( redCur >= (lightCol.Red() - 50) && greenCur >= (lightCol.Green() - 50) && blueCur >= (lightCol.Blue() - 50) )
+ {
+ dest.SetRGB(x,y, bgCol.Red(), bgCol.Green(), bgCol.Blue());
+ }
+ else if ( redCur == bgCol.Red() && greenCur == bgCol.Green() && blueCur == bgCol.Blue() )
+ {
+ // Leave the background colour as-is
+ // dest.SetRGB(x,y, bgCol.Red(), bgCol.Green(), bgCol.Blue());
+ }
+ else // if ( redCur <= darkCol.Red() && greenCur <= darkCol.Green() && blueCur <= darkCol.Blue() )
+ {
+ // Change dark things to really dark
+ dest.SetRGB(x,y, darkCol.Red(), darkCol.Green(), darkCol.Blue());
+ }
+ }
+ }
+}
+
+/*
+ * Make a greyed-out image suitable for disabled buttons.
+ * This code is adapted from wxNewBitmapButton in FL.
+ */
+
+bool wxCreateGreyedImage(const wxImage& in, wxImage& out)
+{
+ out = in.Copy();
+
+ // assuming the pixels along the edges are of the background color
+ wxColour bgCol(in.GetRed(0, 0), in.GetGreen(0, 0), in.GetBlue(0, 0));
+
+ wxColour darkCol = wxSystemSettings::GetColour(wxSYS_COLOUR_3DSHADOW) ;
+ wxColour lightCol = wxSystemSettings::GetColour(wxSYS_COLOUR_3DHIGHLIGHT) ;
+
+ wxGreyOutImage(in, out, darkCol, lightCol, bgCol);
+
+ return TRUE;
+}
+