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Try to fix a bug where a window move, with a non-rectangular region

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Try to fix a bug where a window move, with a non-rectangular region unobstructed, would cause
pieces of the window to be moved twice. Effectively, sort of implement a
gdk_draw_drawable_region(drawable, gc, drawable, region, dx, dy);

Am going blind trying to find the off-by-one thing, especially since it doesn't happen except for
the preview tests. Still not fixed, have at it.
This commit is contained in:
Elliot Lee 2000-08-23 00:50:32 +00:00
parent 3f14b4598f
commit 3c8161925e
1 changed files with 61 additions and 25 deletions
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84
gdk/linux-fb/gdkwindow-fb.c
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@ -761,6 +761,30 @@ recompute_drawable(GdkDrawable *drawable)
recompute_abs_positions(drawable, 0, 0, 0, 0, INT_MAX, INT_MAX);
}
/* You can thank g_list_insert_sorted and GCompareFunc for these */
static gint static_dx_hack, static_dy_hack;
static gint
compare_draw_rects(gconstpointer a, gconstpointer b)
{
const GdkRegionBox *ba = a, *bb = b;
if(static_dy_hack > 0
&& ba->y1 < bb->y1)
return 1;
if(static_dy_hack < 0
&& ba->y1 > bb->y1)
return 1;
if(static_dx_hack > 0
&& ba->x1 < bb->x1)
return 1;
if(static_dx_hack < 0
&& ba->x1 > bb->x1)
return 1;
return -1;
}
void
gdk_fb_window_move_resize (GdkWindow *window,
gint x,
@ -785,21 +809,13 @@ gdk_fb_window_move_resize (GdkWindow *window,
if (!private->destroyed)
{
GdkRegion *old_region = NULL;
GdkRectangle old_rect;
if(private->input_only)
send_expose_events = FALSE;
if(private->mapped && send_expose_events)
{
old_region = gdk_fb_clip_region(GDK_DRAWABLE_IMPL(window), NULL, TRUE, FALSE);
old_rect.x = GDK_DRAWABLE_IMPL_FBDATA(window)->llim_x;
old_rect.y = GDK_DRAWABLE_IMPL_FBDATA(window)->llim_y;
old_rect.width = GDK_DRAWABLE_IMPL_FBDATA(window)->lim_x - old_rect.x;
old_rect.height = GDK_DRAWABLE_IMPL_FBDATA(window)->lim_y - old_rect.y;
}
dx = x - private->x;
dy = y - private->y;
dw = width - GDK_DRAWABLE_IMPL_FBDATA(private)->width;
@ -816,18 +832,13 @@ gdk_fb_window_move_resize (GdkWindow *window,
if(send_expose_events)
{
GdkRectangle new_rect;
GdkRegion *new_region, *region;
int i;
gboolean handle_cursor = FALSE;
GList *rects, *ltmp, *next;
new_region = gdk_fb_clip_region(GDK_DRAWABLE_IMPL(window), NULL, TRUE, FALSE);
new_rect.x = GDK_DRAWABLE_IMPL_FBDATA(window)->llim_x;
new_rect.y = GDK_DRAWABLE_IMPL_FBDATA(window)->llim_y;
new_rect.width = GDK_DRAWABLE_IMPL_FBDATA(window)->lim_x - new_rect.x;
new_rect.height = GDK_DRAWABLE_IMPL_FBDATA(window)->lim_y - new_rect.y;
region = gdk_region_copy(old_region);
gdk_region_offset(region, dx, dy);
gdk_region_intersect(region, new_region);
@ -835,9 +846,6 @@ gdk_fb_window_move_resize (GdkWindow *window,
if(region->numRects)
{
GdkFBDrawingContext fbdc;
GdkRectangle cursor_rect;
gdk_fb_get_cursor_rect(&cursor_rect);
if(gdk_fb_cursor_region_need_hide(region))
{
@ -846,16 +854,37 @@ gdk_fb_window_move_resize (GdkWindow *window,
}
gdk_fb_drawing_context_init(&fbdc, GDK_DRAWABLE_IMPL(gdk_parent_root), NULL, FALSE, FALSE);
for(i = 0; i < region->numRects; i++)
g_print("[%p] %ld rect +[%d, %d] move [%d, %d] from [%d, %d] to [%d, %d]\n",
window,
region->numRects,
region->rects[0].x2 - region->rects[0].x1,
region->rects[0].y2 - region->rects[0].y1,
dx, dy,
region->rects[0].x1 - dx,
region->rects[0].y1 - dy,
region->rects[0].x1,
region->rects[0].y1);
static_dx_hack = dx;
static_dy_hack = dy;
for(rects = NULL, i = 0; i < region->numRects; i++)
rects = g_list_insert_sorted(rects, &region->rects[i], compare_draw_rects);
for(ltmp = rects; ltmp; ltmp = next)
{
GdkRegionBox *reg = ltmp->data;
gdk_fb_draw_drawable_3(GDK_DRAWABLE_IMPL(gdk_parent_root), NULL, GDK_DRAWABLE_IMPL(gdk_parent_root),
&fbdc,
(region->rects[i].x1 - dx),
(region->rects[i].y1 - dy),
(region->rects[i].x1),
(region->rects[i].y1),
(region->rects[i].x2 - region->rects[i].x1),
(region->rects[i].y2 - region->rects[i].y1));
(reg->x1 - dx),
(reg->y1 - dy),
(reg->x1),
(reg->y1),
(reg->x2 - reg->x1),
(reg->y2 - reg->y1));
next = ltmp->next;
g_list_free_1(ltmp);
}
gdk_fb_drawing_context_finalize(&fbdc);
}
@ -863,6 +892,13 @@ gdk_fb_window_move_resize (GdkWindow *window,
gdk_region_union(new_region, old_region);
gdk_region_subtract(new_region, region);
gdk_region_destroy(region);
#if 0
g_print("Redraw region enclosed by [%d, %d] +[%d, %d]\n",
new_region->extents.x1, new_region->extents.y1,
new_region->extents.x2 - new_region->extents.x1,
new_region->extents.y2 - new_region->extents.y1);
#endif
gdk_window_invalidate_region_clear(gdk_parent_root, new_region);
if(handle_cursor)
gdk_fb_cursor_unhide();