added clipping rectangles

[winnie] / src / sdl / gfx.cc

diff --git a/src/sdl/gfx.cc b/src/sdl/gfx.cc
index 1c4f347..84ab690 100644 (file)
--- a/src/sdl/gfx.cc
+++ b/src/sdl/gfx.cc
@@ -7,6 +7,8 @@
 static SDL_Surface *fbsurf;
 
 static Rect screen_rect = {0, 0, 1024, 768};
+static Rect clipping_rect;
+
 static int color_depth = 32; // bits per pixel
 
 static Pixmap *pixmap;
@@ -29,6 +31,8 @@ bool init_gfx()
        pixmap->height = screen_rect.height;
        pixmap->pixels = (unsigned char*)fbsurf->pixels;
 
+       set_clipping_rect(screen_rect);
+
        return true;
 }
 
@@ -59,6 +63,24 @@ int get_color_depth()
        return color_depth;
 }
 
+/*void set_clipping_rect(const Rect &rect)
+{
+       clipping_rect = rect_intersection(rect, screen_rect);
+
+       SDL_Rect sdl_rect;
+       sdl_rect.x = clipping_rect.x;
+       sdl_rect.y = clipping_rect.y;
+       sdl_rect.w = clipping_rect.width;
+       sdl_rect.h = clipping_rect.height;
+
+       SDL_SetClipRect(fbsurf, &sdl_rect);
+}
+
+const Rect &get_clipping_rect()
+{
+       return clipping_rect;
+}
+
 void clear_screen(int r, int g, int b)
 {
        fill_rect(screen_rect, r, g, b);
@@ -75,107 +97,12 @@ void fill_rect(const Rect &rect, int r, int g, int b)
        sdl_rect.h = rect.height;
 
        SDL_FillRect(fbsurf, &sdl_rect, color);
-}
+}*/
 
 void set_cursor_visibility(bool visible)
 {
 }
 
-void blit(unsigned char *src_img, const Rect &src_rect, unsigned char* dest_img,
-               const Rect &dest_rect, int dest_x, int dest_y)
-{
-       int width = src_rect.width;
-       int height = src_rect.height;
-
-       int xoffs = dest_x - dest_rect.x;
-       if(xoffs < 0) {
-               dest_x = dest_rect.x;
-               width += xoffs;
-       }
-
-       int yoffs = dest_y - dest_rect.y;
-       if(yoffs < 0) {
-               dest_y = dest_rect.y;
-               height += yoffs;
-       }
-
-       int xend = dest_x + width;
-       if(xend >= dest_rect.width) {
-               width -= xend - dest_rect.width;
-       }
-
-       int yend = dest_y + height;
-       if(yend >= dest_rect.height) {
-               height -= yend - dest_rect.height;
-       }
-
-       if(width <= 0 || height <= 0) {
-               return;
-       }
-
-       unsigned char *sptr = src_img + (src_rect.y * src_rect.width + src_rect.x) * 4;
-       unsigned char *dptr = dest_img + (dest_y * dest_rect.width + dest_x) * 4;
-
-       for(int i=0; i<height; i++) {
-               memcpy(dptr, sptr, width * 4);
-               sptr += src_rect.width * 4;
-               dptr += dest_rect.width * 4;
-       }
-}
-
-void blit_key(unsigned char *src_img, const Rect &src_rect, unsigned char* dest_img,
-               const Rect &dest_rect, int dest_x, int dest_y, int key_r, int key_g, int key_b)
-{
-       int width = src_rect.width;
-       int height = src_rect.height;
-
-       int xoffs = dest_x - dest_rect.x;
-       if(xoffs < 0) {
-               dest_x = dest_rect.x;
-               width += xoffs;
-       }
-
-       int yoffs = dest_y - dest_rect.y;
-       if(yoffs < 0) {
-               dest_y = dest_rect.y;
-               height += yoffs;
-       }
-
-       int xend = dest_x + width;
-       if(xend >= dest_rect.width) {
-               width -= xend - dest_rect.width;
-       }
-
-       int yend = dest_y + height;
-       if(yend >= dest_rect.height) {
-               height -= yend - dest_rect.height;
-       }
-
-       if(width <= 0 || height <= 0) {
-               return;
-       }
-
-       unsigned char *sptr = src_img + (src_rect.y * src_rect.width + src_rect.x) * 4;
-       unsigned char *dptr = dest_img + (dest_y * dest_rect.width + dest_x) * 4;
-
-       for(int i=0; i<height; i++) {
-               for(int j=0; j<width; j++) {
-                       int r = sptr[j * 4];
-                       int g = sptr[j * 4 + 1];
-                       int b = sptr[j * 4 + 2];
-
-                       if(r != key_r || g != key_g || b != key_b) {
-                               dptr[j * 4] = r;
-                               dptr[j * 4 + 1] = g;
-                               dptr[j * 4 + 2] = b;
-                       }
-               }
-
-               sptr += src_rect.width * 4;
-               dptr += dest_rect.width * 4;
-       }
-}
-
 void gfx_update()
 {
        SDL_UpdateRect(fbsurf, 0, 0, 0, 0);