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author | Chris Young <chris@unsatisfactorysoftware.co.uk> | 2012-11-15 19:59:09 +0000 |
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committer | Chris Young <chris@unsatisfactorysoftware.co.uk> | 2012-11-15 19:59:09 +0000 |
commit | 78e460e4bdfdfb1daed9a9549381f3e742ba4786 (patch) | |
tree | d1093c9543fb483f4156f50c742dd59b5e5447c2 /desktop | |
parent | 056282aaeb7c05ca515611d674f496e258cb6cf6 (diff) | |
download | netsurf-78e460e4bdfdfb1daed9a9549381f3e742ba4786.tar.gz netsurf-78e460e4bdfdfb1daed9a9549381f3e742ba4786.tar.bz2 |
Redraw newly revealed horizontal and vertical portions separately, avoiding double redraw of any intersection
Diffstat (limited to 'desktop')
-rw-r--r-- | desktop/frames.c | 33 |
1 files changed, 23 insertions, 10 deletions
diff --git a/desktop/frames.c b/desktop/frames.c index 0163e3de4..6dd0d09b4 100644 --- a/desktop/frames.c +++ b/desktop/frames.c @@ -63,27 +63,39 @@ void browser_window_scroll_callback(void *client_data, if (bw->browser_window_type == BROWSER_WINDOW_IFRAME) { html_redraw_a_box(bw->parent->current_content, bw->box); } else { - struct rect rect; + struct rect rect_x; + struct rect rect_y; struct rect copyrect; int dest_x = 0; int dest_y = 0; int cur_x = scrollbar_get_offset(bw->scroll_x); int cur_y = scrollbar_get_offset(bw->scroll_y); + rect_y.x0 = 0; + rect_y.x1 = bw->width; + rect_x.y0 = 0; + rect_x.y1 = bw->height; + if(cur_y > bw->prev_scroll_y) { copyrect.y0 = cur_y - bw->prev_scroll_y; copyrect.y1 = bw->height; dest_y = 0; - rect.y0 = bw->height - copyrect.y0; - rect.y1 = bw->height; + rect_y.y0 = bw->height - copyrect.y0; + rect_y.y1 = bw->height; + + rect_x.y0 = 0; + rect_x.y1 = rect_y.y0; } else { copyrect.y0 = 0; copyrect.y1 = bw->height - (cur_y - bw->prev_scroll_y); dest_y = cur_y - bw->prev_scroll_y; - rect.y0 = 0; - rect.y1 = cur_y - bw->prev_scroll_y; + rect_y.y0 = 0; + rect_y.y1 = cur_y - bw->prev_scroll_y; + + rect_x.y0 = rect_y.y1; + rect_x.y1 = bw->height; } if(cur_x > bw->prev_scroll_x) { @@ -91,19 +103,20 @@ void browser_window_scroll_callback(void *client_data, copyrect.x1 = bw->width; dest_x = 0; - rect.x0 = bw->height - copyrect.x0; - rect.x1 = bw->height; + rect_x.x0 = bw->height - copyrect.x0; + rect_x.x1 = bw->height; } else { copyrect.x0 = 0; copyrect.x1 = bw->width - (cur_x - bw->prev_scroll_x); dest_x = cur_x - bw->prev_scroll_x; - rect.x0 = 0; - rect.x1 = cur_x - bw->prev_scroll_x; + rect_x.x0 = 0; + rect_x.x1 = cur_x - bw->prev_scroll_x; } browser_window_copy_box(bw, ©rect, dest_x, dest_y); - browser_window_update_box(bw, &rect); + browser_window_update_box(bw, &rect_y); + browser_window_update_box(bw, &rect_x); bw->prev_scroll_x = scrollbar_get_offset(bw->scroll_x); bw->prev_scroll_y = scrollbar_get_offset(bw->scroll_y); |