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server: Map region to the window DPI in redraw_region().

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Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Alexandre Julliard 2018-08-24 12:45:43 +02:00
parent 87e49000a1
commit 8698b600c6
3 changed files with 35 additions and 5 deletions
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12
server/region.c
View file

@ -724,6 +724,18 @@ void mirror_region( const rectangle_t *client_rect, struct region *region )
}
/* scale a region for a given dpi factor */
void scale_region( struct region *region, unsigned int dpi_from, unsigned int dpi_to )
{
rectangle_t *rect, *end;
if (!region->num_rects) return;
for (rect = region->rects, end = rect + region->num_rects; rect < end; rect++)
scale_dpi_rect( rect, dpi_from, dpi_to );
scale_dpi_rect( &region->extents, dpi_from, dpi_to );
}
/* make a copy of a region; returns dst or NULL on error */
struct region *copy_region( struct region *dst, const struct region *src )
{

1
server/user.h
View file

@ -135,6 +135,7 @@ extern int is_region_empty( const struct region *region );
extern void get_region_extents( const struct region *region, rectangle_t *rect );
extern void offset_region( struct region *region, int x, int y );
extern void mirror_region( const rectangle_t *client_rect, struct region *region );
extern void scale_region( struct region *region, unsigned int dpi_from, unsigned int dpi_to );
extern struct region *copy_region( struct region *dst, const struct region *src );
extern struct region *intersect_region( struct region *dst, const struct region *src1,
const struct region *src2 );

27
server/window.c
View file

@ -649,6 +649,15 @@ static void map_dpi_rect( struct window *win, rectangle_t *rect, unsigned int fr
scale_dpi_rect( rect, from, to );
}
/* map a region between different DPI scaling levels */
static void map_dpi_region( struct window *win, struct region *region, unsigned int from, unsigned int to )
{
if (!from) from = get_monitor_dpi( win );
if (!to) to = get_monitor_dpi( win );
if (from == to) return;
scale_region( region, from, to );
}
/* check if window and all its ancestors are visible */
static int is_visible( const struct window *win )
{
@ -1388,7 +1397,7 @@ static void validate_parents( struct window *child )
/* add/subtract a region (in client coordinates) to the update region of the window */
static void redraw_window( struct window *win, struct region *region, int frame, unsigned int flags )
{
struct region *tmp;
struct region *child_rgn, *tmp;
struct window *child;
if (flags & RDW_INVALIDATE)
@ -1450,11 +1459,19 @@ static void redraw_window( struct window *win, struct region *region, int frame,
LIST_FOR_EACH_ENTRY( child, &win->children, struct window, entry )
{
if (!(child->style & WS_VISIBLE)) continue;
if (!rect_in_region( tmp, &child->window_rect )) continue;
offset_region( tmp, -child->client_rect.left, -child->client_rect.top );
redraw_window( child, tmp, 1, flags );
offset_region( tmp, child->client_rect.left, child->client_rect.top );
if (!(child_rgn = create_empty_region())) continue;
if (copy_region( child_rgn, tmp ))
{
map_dpi_region( child, child_rgn, win->dpi, child->dpi );
if (rect_in_region( child_rgn, &child->window_rect ))
{
offset_region( child_rgn, -child->client_rect.left, -child->client_rect.top );
redraw_window( child, child_rgn, 1, flags );
}
}
free_region( child_rgn );
}
free_region( tmp );
}