rnd-20030411-1-src

[rocksndiamonds.git] / src / libgame / sdl.c

diff --git a/src/libgame/sdl.c b/src/libgame/sdl.c
index 9403b2a776e8a780c78360f871560cc6ac4ab30b..18e384c5e13530a60fb75db743059714e5f902b6 100644 (file)
--- a/src/libgame/sdl.c
+++ b/src/libgame/sdl.c
@@ -363,12 +363,12 @@ inline void SDLDrawLines(SDL_Surface *surface, struct XY *points,
 }
 #endif
 
-inline Pixel SDLGetPixel(Bitmap *dst_bitmap, int x, int y)
+inline Pixel SDLGetPixel(Bitmap *src_bitmap, int x, int y)
 {
-  SDL_Surface *surface = dst_bitmap->surface;
+  SDL_Surface *surface = src_bitmap->surface;
 
 #ifdef FULLSCREEN_BUG
-  if (dst_bitmap == backbuffer || dst_bitmap == window)
+  if (src_bitmap == backbuffer || src_bitmap == window)
   {
     x += video_xoffset;
     y += video_yoffset;
@@ -548,9 +548,9 @@ void sge_PutPixel(SDL_Surface *surface, Sint16 x, Sint16 y, Uint32 color)
 }
 
 void sge_PutPixelRGB(SDL_Surface *surface, Sint16 x, Sint16 y,
-                 Uint8 R, Uint8 G, Uint8 B)
+                 Uint8 r, Uint8 g, Uint8 b)
 {
-  sge_PutPixel(surface, x, y, SDL_MapRGB(surface->format, R, G, B));
+  sge_PutPixel(surface, x, y, SDL_MapRGB(surface->format, r, g, b));
 }
 
 Sint32 sge_CalcYPitch(SDL_Surface *dest, Sint16 y)
@@ -864,6 +864,52 @@ void sge_LineRGB(SDL_Surface *Surface, Sint16 x1, Sint16 y1, Sint16 x2,
   sge_Line(Surface, x1, y1, x2, y2, SDL_MapRGB(Surface->format, R, G, B));
 }
 
+inline void SDLPutPixel(Bitmap *dst_bitmap, int x, int y, Pixel pixel)
+{
+  sge_PutPixel(dst_bitmap->surface, x, y, pixel);
+}
+
+
+/*
+  -----------------------------------------------------------------------------
+  quick (no, it's slow) and dirty hack to "invert" rectangle inside SDL surface
+  -----------------------------------------------------------------------------
+*/
+
+inline void SDLInvertArea(Bitmap *bitmap, int src_x, int src_y,
+                         int width, int height, Uint32 color)
+{
+  int x, y;
+
+  for (y=src_y; y < src_y + height; y++)
+  {
+    for (x=src_x; x < src_x + width; x++)
+    {
+      Uint32 pixel = SDLGetPixel(bitmap, x, y);
+
+      SDLPutPixel(bitmap, x, y, pixel == BLACK_PIXEL ? color : BLACK_PIXEL);
+    }
+  }
+}
+
+inline void SDLCopyInverseMasked(Bitmap *src_bitmap, Bitmap *dst_bitmap,
+                                int src_x, int src_y, int width, int height,
+                                int dst_x, int dst_y)
+{
+  int x, y;
+
+  for (y=0; y < height; y++)
+  {
+    for (x=0; x < width; x++)
+    {
+      Uint32 pixel = SDLGetPixel(src_bitmap, src_x + x, src_y + y);
+
+      if (pixel != BLACK_PIXEL)
+       SDLPutPixel(dst_bitmap, dst_x + x, dst_y + y, BLACK_PIXEL);
+    }
+  }
+}
+
 
 /* ========================================================================= */
 /* The following functions were taken from the SDL_gfx library version 2.0.3 */
@@ -1209,6 +1255,36 @@ Bitmap *SDLLoadImage(char *filename)
 }
 
 
+/* ------------------------------------------------------------------------- */
+/* custom cursor fuctions                                                    */
+/* ------------------------------------------------------------------------- */
+
+static SDL_Cursor *create_cursor(struct MouseCursorInfo *cursor_info)
+{
+  return SDL_CreateCursor(cursor_info->data, cursor_info->mask,
+                         cursor_info->width, cursor_info->height,
+                         cursor_info->hot_x, cursor_info->hot_y);
+}
+
+void SDLSetMouseCursor(struct MouseCursorInfo *cursor_info)
+{
+  static struct MouseCursorInfo *last_cursor_info = NULL;
+  static SDL_Cursor *cursor_default = NULL;
+  static SDL_Cursor *cursor_current = NULL;
+
+  if (cursor_default == NULL)
+    cursor_default = SDL_GetCursor();
+
+  if (cursor_info != NULL && cursor_info != last_cursor_info)
+  {
+    cursor_current = create_cursor(cursor_info);
+    last_cursor_info = cursor_info;
+  }
+
+  SDL_SetCursor(cursor_info ? cursor_current : cursor_default);
+}
+
+
 /* ========================================================================= */
 /* audio functions                                                           */
 /* ========================================================================= */