Ge image, reset color tone didn't work

xtt/lib/glow/gtk/glow_draw_gtk.cpp

@@ -2812,6 +2812,14 @@ unsigned char *GlowDrawGtk::image_get_data( glow_tImImage image)
   return (unsigned char *) gdk_pixbuf_get_pixels( (GdkPixbuf *)image);
 }
 
+void GlowDrawGtk::image_copy( glow_tImImage orig_image, glow_tImImage *image)
+{
+  if ( *image)
+    gdk_pixbuf_unref( (GdkPixbuf *)*image);
+
+  *(GdkPixbuf **)image = gdk_pixbuf_copy( (GdkPixbuf *)orig_image);
+}
+
 void GlowDrawGtk::image_rotate( glow_tImImage *image, int to_rotation, int from_rotation) 
 {
 #if GDK_PIXBUF_MAJOR == 2 && GDK_PIXBUF_MINOR < 8
@@ -2899,8 +2907,9 @@ int GlowDrawGtk::image_load( char *imagefile,
     return 0;
   }
 
-  if ( im)
+  if ( im) {
     *im = (glow_tImImage *) gdk_pixbuf_copy( (GdkPixbuf *)*orig_im);
+  }
   return 1;
 }
 

xtt/lib/glow/gtk/glow_draw_gtk.h

@@ -201,6 +201,7 @@ class GlowDrawGtk : public GlowDraw {
   int image_get_height( glow_tImImage image);
   int image_get_rowstride( glow_tImImage image);
   unsigned char *image_get_data( glow_tImImage image);
+  void image_copy( glow_tImImage orig_image, glow_tImImage *image);
   void image_rotate( glow_tImImage *image, int to_rotation, int from_rotation);
   void image_flip_vertical( glow_tImImage *image);
   void image_flip_horizontal( glow_tImImage *image);

xtt/lib/glow/src/glow_draw.h

@@ -151,6 +151,7 @@ class GlowDraw {
   virtual int image_get_height( glow_tImImage image) {return 0;}
   virtual int image_get_rowstride( glow_tImImage image) {return 0;}
   virtual unsigned char *image_get_data( glow_tImImage image) {return 0;}
+  virtual void image_copy( glow_tImImage orig_image, glow_tImImage *image) {}
   virtual void image_rotate( glow_tImImage *image, int to_rotation, int from_rotation) {}
   virtual void image_flip_vertical( glow_tImImage *image) {}
   virtual void image_flip_horizontal( glow_tImImage *image) {}

xtt/lib/glow/src/glow_growimage.cpp

@@ -198,6 +198,7 @@ int GrowImage::insert_image( const char *imagefile)
   ctx->gdraw->image_load( filename, &original_image, &image);
   if ( !original_image) 
     return 0;
+
   current_width = int( ctx->mw.zoom_factor_x / ctx->mw.base_zoom_factor *
 		       ctx->gdraw->image_get_width( image));
   current_height = int( ctx->mw.zoom_factor_y / ctx->mw.base_zoom_factor *
@@ -1219,6 +1220,9 @@ int GrowImage::set_image_color( glow_tImImage om, void *n)
        c_color_shift || c_color_intensity || c_color_lightness || inverse) {
     ctx->gdraw->image_pixel_iter( om, &image, pixel_cb, this);
   }
+  else if ( image != om)
+    ctx->gdraw->image_copy( om, &image);
+  
   return 1;
 }