added license GPL

[winnie] / src / gfx.cc

diff --git a/src/gfx.cc b/src/gfx.cc
index 1da2953..b72e43b 100644 (file)
--- a/src/gfx.cc
+++ b/src/gfx.cc
@@ -1,19 +1,28 @@
-#include <string.h>
+/*
+winnie - an experimental window system
 
-#include "geom.h"
-#include "gfx.h"
+Copyright (C) 2013 Eleni Maria Stea
 
-static Rect clipping_rect;
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
 
-void set_clipping_rect(const Rect &rect)
-{
-       clipping_rect = rect_intersection(rect, get_screen_size());
-}
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
 
-const Rect &get_clipping_rect()
-{
-       return clipping_rect;
-}
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Author: Eleni Maria Stea <elene.mst@gmail.com>
+*/
+
+#include <string.h>
+
+#include "geom.h"
+#include "gfx.h"
 
 void clear_screen(int r, int g, int b)
 {
@@ -25,6 +34,7 @@ void fill_rect(const Rect &rect, int r, int g, int b)
 {
        Rect drect = rect;
        Rect screen_rect = get_screen_size();
+       Rect clipping_rect = get_clipping_rect();
 
        if(drect.x < clipping_rect.x) {
                drect.width -= clipping_rect.x - drect.x;
@@ -58,6 +68,9 @@ void fill_rect(const Rect &rect, int r, int g, int b)
 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 red_offs, green_offs, blue_offs;
+       get_rgb_order(&red_offs, &green_offs, &blue_offs);
+
        Rect irect = rect_intersection(get_clipping_rect(), dest_rect);
 
        int width = src_rect.width;
@@ -93,7 +106,11 @@ void blit(unsigned char *src_img, const Rect &src_rect, unsigned char* dest_img,
        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);
+               for(int j=0; j<width; j++) {
+                       dptr[j * 4 + red_offs] = sptr[j * 4];
+                       dptr[j * 4 + green_offs] = sptr[j * 4 + 1];
+                       dptr[j * 4 + blue_offs] = sptr[j * 4 + 2];
+               }
                sptr += src_rect.width * 4;
                dptr += dest_rect.width * 4;
        }
@@ -102,6 +119,9 @@ void blit(unsigned char *src_img, const Rect &src_rect, unsigned char* dest_img,
 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 red_offs, green_offs, blue_offs;
+       get_rgb_order(&red_offs, &green_offs, &blue_offs);
+
        Rect irect = rect_intersection(get_clipping_rect(), dest_rect);
 
        int width = src_rect.width;
@@ -143,9 +163,9 @@ void blit_key(unsigned char *src_img, const Rect &src_rect, unsigned char* dest_
                        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;
+                               dptr[j * 4 + red_offs] = r;
+                               dptr[j * 4 + green_offs] = g;
+                               dptr[j * 4 + blue_offs] = b;
                        }
                }