+#if wxUSE_IMAGE
+
+/*
+ * Make a greyed-out image suitable for disabled buttons.
+ * This code is adapted from wxNewBitmapButton in FL.
+ */
+
+bool wxCreateGreyedImage(const wxImage& src, wxImage& dst)
+{
+ dst = src.Copy();
+
+ unsigned char rBg, gBg, bBg;
+ if ( src.HasMask() )
+ {
+ src.GetOrFindMaskColour(&rBg, &gBg, &bBg);
+ dst.SetMaskColour(rBg, gBg, bBg);
+ }
+ else // assuming the pixels along the edges are of the background color
+ {
+ rBg = src.GetRed(0, 0);
+ gBg = src.GetGreen(0, 0);
+ bBg = src.GetBlue(0, 0);
+ }
+
+ const wxColour colBg(rBg, gBg, bBg);
+
+ const wxColour colDark = wxSystemSettings::GetColour(wxSYS_COLOUR_3DSHADOW);
+ const wxColour colLight = wxSystemSettings::GetColour(wxSYS_COLOUR_3DHIGHLIGHT);
+
+ // Second attempt, just making things monochrome
+ const int width = src.GetWidth();
+ const int height = src.GetHeight();
+
+ for ( int x = 0; x < width; x++ )
+ {
+ for ( int y = 0; y < height; y++ )
+ {
+ const int r = src.GetRed(x, y);
+ const int g = src.GetGreen(x, y);
+ const int b = src.GetBlue(x, y);
+
+ if ( r == rBg && g == gBg && b == bBg )
+ {
+ // Leave the background colour as-is
+ continue;
+ }
+
+ // Change light things to the background colour
+ wxColour col;
+ if ( r >= (colLight.Red() - 50) &&
+ g >= (colLight.Green() - 50) &&
+ b >= (colLight.Blue() - 50) )
+ {
+ col = colBg;
+ }
+ else // Change dark things to really dark
+ {
+ col = colDark;
+ }
+
+ dst.SetRGB(x, y, col.Red(), col.Green(), col.Blue());
+ }
+ }
+
+ return true;
+}
+
+#endif // wxUSE_IMAGE
+
projects / wxWidgets.git / blobdiff