+ Bitmap swap_bitmap;
+ Bitmap *new_bitmap, *tmp_bitmap_1, *tmp_bitmap_2, *tmp_bitmap_8;
+ int width_1, height_1, width_2, height_2, width_8, height_8;
+ int new_width, new_height;
+
+ /* calculate new image dimensions for normal sized image */
+ width_1 = old_bitmap->width * zoom_factor;
+ height_1 = old_bitmap->height * zoom_factor;
+
+ /* get image with normal size (this might require scaling up) */
+ if (zoom_factor != 1)
+ tmp_bitmap_1 = ZoomBitmap(old_bitmap, width_1, height_1);
+ else
+ tmp_bitmap_1 = old_bitmap;
+
+ if (create_small_bitmaps)
+ {
+ /* calculate new image dimensions for small images */
+ width_2 = width_1 / 2;
+ height_2 = height_1 / 2;
+ width_8 = width_1 / 8;
+ height_8 = height_1 / 8;
+
+ /* get image with 1/2 of normal size (for use in the level editor) */
+ if (zoom_factor != 2)
+ tmp_bitmap_2 = ZoomBitmap(tmp_bitmap_1, width_1 / 2, height_1 / 2);
+ else
+ tmp_bitmap_2 = old_bitmap;
+
+ /* get image with 1/8 of normal size (for use on the preview screen) */
+ if (zoom_factor != 8)
+ tmp_bitmap_8 = ZoomBitmap(tmp_bitmap_1, width_1 / 8, height_1 / 8);
+ else
+ tmp_bitmap_8 = old_bitmap;
+ }
+
+ /* if image was scaled up, create new clipmask for normal size image */
+ if (zoom_factor != 1)
+ {
+#if defined(TARGET_X11)
+ if (old_bitmap->clip_mask)
+ XFreePixmap(display, old_bitmap->clip_mask);
+
+ old_bitmap->clip_mask =
+ Pixmap_to_Mask(tmp_bitmap_1->drawable, width_1, height_1);
+
+ XSetClipMask(display, old_bitmap->stored_clip_gc, old_bitmap->clip_mask);
+#else
+ SDL_Surface *tmp_surface_1 = tmp_bitmap_1->surface;
+
+ if (old_bitmap->surface_masked)
+ SDL_FreeSurface(old_bitmap->surface_masked);
+
+ SDL_SetColorKey(tmp_surface_1, SDL_SRCCOLORKEY,
+ SDL_MapRGB(tmp_surface_1->format, 0x00, 0x00, 0x00));
+ if ((old_bitmap->surface_masked = SDL_DisplayFormat(tmp_surface_1)) ==NULL)
+ Error(ERR_EXIT, "SDL_DisplayFormat() failed");
+ SDL_SetColorKey(tmp_surface_1, 0, 0); /* reset transparent pixel */
+#endif
+ }
+
+ if (create_small_bitmaps)
+ {
+ new_width = width_1;
+ new_height = height_1 + (height_1 + 1) / 2; /* prevent odd height */
+
+ new_bitmap = CreateBitmap(new_width, new_height, DEFAULT_DEPTH);
+
+ BlitBitmap(tmp_bitmap_1, new_bitmap, 0, 0, width_1, height_1, 0, 0);
+ BlitBitmap(tmp_bitmap_2, new_bitmap, 0, 0, width_1 / 2, height_1 / 2,
+ 0, height_1);
+ BlitBitmap(tmp_bitmap_8, new_bitmap, 0, 0, width_1 / 8, height_1 / 8,
+ 3 * width_1 / 4, height_1);
+ }
+ else
+ {
+ new_width = width_1;
+ new_height = height_1;
+
+ new_bitmap = tmp_bitmap_1; /* directly use tmp_bitmap_1 as new bitmap */
+ }
+
+ if (create_small_bitmaps)
+ {
+ /* if no small bitmaps created, tmp_bitmap_1 is used as new bitmap now */
+ if (zoom_factor != 1)
+ FreeBitmap(tmp_bitmap_1);
+
+ if (zoom_factor != 2)
+ FreeBitmap(tmp_bitmap_2);