rnd-20030405-1-src

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

diff --git a/src/libgame/sdl.c b/src/libgame/sdl.c
index 9403b2a776e8a780c78360f871560cc6ac4ab30b..f479fd9960b804faa6ae41bc42b1a8040b3971c2 100644 (file)
--- a/src/libgame/sdl.c
+++ b/src/libgame/sdl.c
@@ -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)
@@ -865,6 +865,30 @@ void sge_LineRGB(SDL_Surface *Surface, Sint16 x1, Sint16 y1, Sint16 x2,
 }
 
 
+/*
+  -----------------------------------------------------------------------------
+  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)
+{
+  SDL_Surface *surface = bitmap->surface;
+  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);
+
+      sge_PutPixel(surface, x, y, pixel == BLACK_PIXEL ? color : BLACK_PIXEL);
+    }
+  }
+}
+
+
 /* ========================================================================= */
 /* The following functions were taken from the SDL_gfx library version 2.0.3 */
 /* (Rotozoomer) by Andreas Schiffler                                         */
@@ -1209,6 +1233,36 @@ 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                                                           */
 /* ========================================================================= */