Splash screen asks the user for Layers/Anim mode

git-svn-id: svn://pulkomandy.tk/GrafX2/trunk@2007 416bcca6-2ee7-4201-b75f-2eb2f807beb1

src/layers.c

@@ -671,3 +671,29 @@ void Button_Anim_continuous_prev(void)
   Unselect_button(BUTTON_ANIM_PREV_FRAME);
   Display_cursor();
 }
+
+void Switch_layer_mode(enum IMAGE_MODES new_mode)
+{
+  if (new_mode == Main_backups->Pages->Image_mode)
+    return;
+
+  switch (new_mode)
+  {
+    case IMAGE_MODE_LAYERED:
+      Update_buffers(Main_image_width, Main_image_height);
+      // Refresh the buffer, special shortcut because only one layer exists.
+      memset(Main_visible_image_depth_buffer.Image, 0, Main_image_width*Main_image_height);
+      memcpy(Main_visible_image.Image,
+        Main_backups->Pages->Image[0].Pixels,
+        Main_image_width*Main_image_height);
+      break;
+    case IMAGE_MODE_ANIMATION:
+      // nothing to do
+      break;
+    case IMAGE_MODE_MODE5:
+      break;
+  }
+  
+  Main_backups->Pages->Image_mode = new_mode;
+  Update_pixel_renderer();      
+}