+
+ if (new_bitmap)
+ new_bitmap->source_filename = getStringCopy(filename);
+
+ return new_bitmap;
+}
+
+Bitmap *LoadCustomImage(char *basename)
+{
+ char *filename = getCustomImageFilename(basename);
+ Bitmap *new_bitmap;
+
+ if (filename == NULL)
+ Error(ERR_EXIT, "LoadCustomImage(): cannot find file '%s'", basename);
+
+ if ((new_bitmap = LoadImage(filename)) == NULL)
+ Error(ERR_EXIT, "LoadImage() failed: %s", GetError());
+
+ return new_bitmap;
+}
+
+void ReloadCustomImage(Bitmap *bitmap, char *basename)
+{
+ char *filename = getCustomImageFilename(basename);
+ Bitmap *new_bitmap;
+
+ if (filename == NULL) /* (should never happen) */
+ {
+ Error(ERR_WARN, "ReloadCustomImage(): cannot find file '%s'", basename);
+ return;
+ }
+
+ if (strEqual(filename, bitmap->source_filename))
+ {
+ /* The old and new image are the same (have the same filename and path).
+ This usually means that this image does not exist in this graphic set
+ and a fallback to the existing image is done. */
+
+ return;
+ }
+
+ if ((new_bitmap = LoadImage(filename)) == NULL)
+ {
+ Error(ERR_WARN, "LoadImage() failed: %s", GetError());
+ return;
+ }
+
+ if (bitmap->width != new_bitmap->width ||
+ bitmap->height != new_bitmap->height)
+ {
+ Error(ERR_WARN, "ReloadCustomImage: new image '%s' has wrong dimensions",
+ filename);
+ FreeBitmap(new_bitmap);
+ return;
+ }
+
+ TransferBitmapPointers(new_bitmap, bitmap);
+ free(new_bitmap);
+}
+
+Bitmap *ZoomBitmap(Bitmap *src_bitmap, int zoom_width, int zoom_height)
+{
+ Bitmap *dst_bitmap = CreateBitmap(zoom_width, zoom_height, DEFAULT_DEPTH);
+
+ SDLZoomBitmap(src_bitmap, dst_bitmap);
+
+ return dst_bitmap;
+}
+
+static void CreateScaledBitmaps(Bitmap *old_bitmap, int zoom_factor,
+ boolean create_small_bitmaps)
+{
+ Bitmap swap_bitmap;
+ Bitmap *new_bitmap;
+ Bitmap *tmp_bitmap_1;
+ Bitmap *tmp_bitmap_2;
+ Bitmap *tmp_bitmap_4;
+ Bitmap *tmp_bitmap_8;
+ Bitmap *tmp_bitmap_16;
+ Bitmap *tmp_bitmap_32;
+ int width_1, height_1;
+ int width_2, height_2;
+ int width_4, height_4;
+ int width_8, height_8;
+ int width_16, height_16;
+#if 0
+ int width_32, height_32;
+#endif
+ 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;
+
+ /* this is only needed to make compilers happy */
+ tmp_bitmap_2 = NULL;
+ tmp_bitmap_4 = NULL;
+ tmp_bitmap_8 = NULL;
+ tmp_bitmap_16 = NULL;
+ tmp_bitmap_32 = NULL;
+
+ if (create_small_bitmaps)
+ {
+ /* calculate new image dimensions for small images */
+ width_2 = width_1 / 2;
+ height_2 = height_1 / 2;
+ width_4 = width_1 / 4;
+ height_4 = height_1 / 4;
+ width_8 = width_1 / 8;
+ height_8 = height_1 / 8;
+ width_16 = width_1 / 16;
+ height_16 = height_1 / 16;
+#if 0
+ width_32 = width_1 / 32;
+ height_32 = height_1 / 32;
+#endif
+
+ UPDATE_BUSY_STATE();
+
+ /* 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;
+
+ UPDATE_BUSY_STATE();
+
+ /* get image with 1/4 of normal size (for use in the level editor) */
+ if (zoom_factor != 4)
+ tmp_bitmap_4 = ZoomBitmap(tmp_bitmap_2, width_2 / 2, height_2 / 2);
+ else
+ tmp_bitmap_4 = old_bitmap;
+
+ UPDATE_BUSY_STATE();
+
+ /* get image with 1/8 of normal size (for use on the preview screen) */
+ if (zoom_factor != 8)
+ tmp_bitmap_8 = ZoomBitmap(tmp_bitmap_4, width_4 / 2, height_4 / 2);
+ else
+ tmp_bitmap_8 = old_bitmap;
+
+ UPDATE_BUSY_STATE();
+
+ /* get image with 1/16 of normal size (for use on the preview screen) */
+ if (zoom_factor != 16)
+ tmp_bitmap_16 = ZoomBitmap(tmp_bitmap_8, width_8 / 2, height_8 / 2);
+ else
+ tmp_bitmap_16 = old_bitmap;
+
+ UPDATE_BUSY_STATE();
+
+ /* get image with 1/32 of normal size (for use on the preview screen) */
+ if (zoom_factor != 32)
+ tmp_bitmap_32 = ZoomBitmap(tmp_bitmap_16, width_16 / 2, height_16 / 2);
+ else
+ tmp_bitmap_32 = old_bitmap;
+
+ UPDATE_BUSY_STATE();
+ }
+
+#if 0
+ /* if image was scaled up, create new clipmask for normal size image */
+ if (zoom_factor != 1)
+ {
+ 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, SET_TRANSPARENT_PIXEL,
+ 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, UNSET_TRANSPARENT_PIXEL, 0);
+ }
+#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_4, new_bitmap, 0, 0, width_1 / 4, height_1 / 4,
+ width_1 / 2, height_1);
+ BlitBitmap(tmp_bitmap_8, new_bitmap, 0, 0, width_1 / 8, height_1 / 8,
+ 3 * width_1 / 4, height_1);
+ BlitBitmap(tmp_bitmap_16, new_bitmap, 0, 0, width_1 / 16, height_1 / 16,
+ 7 * width_1 / 8, height_1);
+ BlitBitmap(tmp_bitmap_32, new_bitmap, 0, 0, width_1 / 32, height_1 / 32,
+ 15 * width_1 / 16, height_1);
+
+ UPDATE_BUSY_STATE();
+ }
+ 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);
+
+ if (zoom_factor != 4)
+ FreeBitmap(tmp_bitmap_4);
+
+ if (zoom_factor != 8)
+ FreeBitmap(tmp_bitmap_8);
+
+ if (zoom_factor != 16)
+ FreeBitmap(tmp_bitmap_16);
+
+ if (zoom_factor != 32)
+ FreeBitmap(tmp_bitmap_32);
+ }
+
+ /* replace image with extended image (containing 1/1, 1/2, 1/4, 1/8 size) */
+#if defined(TARGET_SDL)
+ swap_bitmap.surface = old_bitmap->surface;
+ old_bitmap->surface = new_bitmap->surface;
+ new_bitmap->surface = swap_bitmap.surface;