From a3dd14380f910615d937098c8c7d44ed976cafac Mon Sep 17 00:00:00 2001
From: Vincent Sanders <vince@netsurf-browser.org>
Date: Mon, 7 Dec 2009 17:34:04 +0000
Subject: use SDL blit method to accelerate copy operations

svn path=/trunk/libnsfb/; revision=9720
---
 src/frontend_sdl.c | 42 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)

(limited to 'src')

diff --git a/src/frontend_sdl.c b/src/frontend_sdl.c
index b3c3f87..cc73f43 100644
--- a/src/frontend_sdl.c
+++ b/src/frontend_sdl.c
@@ -375,6 +375,46 @@ set_palette(nsfb_t *nsfb)
 
 }
 
+static bool 
+sdlcopy(nsfb_t *nsfb, nsfb_bbox_t *srcbox, nsfb_bbox_t *dstbox)
+{
+    SDL_Rect src;
+    SDL_Rect dst;
+    SDL_Surface *sdl_screen = nsfb->frontend_priv;
+    nsfb_bbox_t allbox;
+    struct nsfb_cursor_s *cursor = nsfb->cursor;
+
+    nsfb_plot_add_rect(srcbox, dstbox, &allbox);
+
+    if ((cursor != NULL) &&
+        (cursor->plotted == true) &&
+        (nsfb_plot_bbox_intersect(&allbox, &cursor->loc))) {
+        nsfb_cursor_clear(nsfb, cursor);
+    }
+
+    src.x = srcbox->x0;
+    src.y = srcbox->y0;
+    src.w = srcbox->x1 - srcbox->x0;
+    src.h = srcbox->y1 - srcbox->y0;
+ 
+    dst.x = dstbox->x0;
+    dst.y = dstbox->y0;
+    dst.w = dstbox->x1 - dstbox->x0;
+    dst.h = dstbox->y1 - dstbox->y0;
+ 
+    SDL_BlitSurface(sdl_screen, &src, sdl_screen , &dst);
+
+    if ((cursor != NULL) && 
+        (cursor->plotted == false)) {
+        nsfb_cursor_plot(nsfb, cursor);
+    }
+
+    SDL_UpdateRect(sdl_screen, dst.x, dst.y, dst.w, dst.h);
+
+    return true;
+
+}
+
 static int sdl_set_geometry(nsfb_t *nsfb, int width, int height, int bpp)
 {
     if (nsfb->frontend_priv != NULL)
@@ -387,6 +427,8 @@ static int sdl_set_geometry(nsfb_t *nsfb, int width, int height, int bpp)
     /* select default sw plotters for bpp */
     select_plotters(nsfb);
 
+    nsfb->plotter_fns->copy = sdlcopy;
+
     return 0;
 }
 
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