mirrors/labwc
1
0
Fork 0
mirror of https://github.com/labwc/labwc.git synced 2026-02-08 10:06:59 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

buffer: reduce unnecessary painting to new cairo surfaces

Browse source 
Add buffer_adopt_cairo_surface(), which allows wrapping an existing
cairo image surface in a struct lab_data_buffer. This is useful when
loading PNGs since most will be loaded as ARGB32 already.

Fix a memory leak in the non-ARGB32 PNG case, where we do still need to
paint to a new image surface -- we were leaking the original surface.

Eliminate an unnecessary temporary image surface in SVG loading and just
render the SVG to the image surface held by the lab_data_buffer.

I also cleaned up and clarified the buffer API a bit:

- Add a pointer to the held cairo_surface_t (so we can still access it
  if there is no cairo_t).
- Remove the free_on_destroy bool (it was always true).
- Rename unscaled_width/height to logical_width/height and add an
  explanatory comment. It was unclear what "unscaled" meant.
- Rename buffer_create_wrap() to buffer_create_from_data().

This is laying groundwork for some more icon fixes I am working on
(making sure icons are loaded and rendered at the correct scale).
This commit is contained in:
John Lindgren 2024-10-06 01:42:54 -04:00 • committed by Johan Malm
parent 328f873db3
commit d2b161bdf8
14 changed files with 123 additions and 84 deletions
Download patch file Download diff file Expand all files Collapse all files

16
src/theme.c
View file

@ -110,7 +110,7 @@ copy_icon_buffer(struct theme *theme, struct lab_data_buffer *icon_buffer)
int buffer_width = (double)width * scale;
int buffer_height = (double)height * scale;
struct lab_data_buffer *buffer = buffer_create_cairo(
buffer_width, buffer_height, 1.0, true);
buffer_width, buffer_height, 1.0);
cairo_t *cairo = buffer->cairo;
cairo_set_source_surface(cairo, icon.surface,
@ -1087,7 +1087,7 @@ rounded_rect(struct rounded_corner_ctx *ctx)
struct lab_data_buffer *buffer;
/* TODO: scale */
buffer = buffer_create_cairo(w, h, 1, /*free_on_destroy*/ true);
buffer = buffer_create_cairo(w, h, 1);
cairo_t *cairo = buffer->cairo;
cairo_surface_t *surf = cairo_get_target(cairo);
@ -1406,11 +1406,11 @@ create_shadows(struct theme *theme)
*/
if (visible_active_size > 0) {
theme->shadow_edge_active = buffer_create_cairo(
visible_active_size, 1, 1.0, true);
visible_active_size, 1, 1.0);
theme->shadow_corner_top_active = buffer_create_cairo(
total_active_size, total_active_size, 1.0, true);
total_active_size, total_active_size, 1.0);
theme->shadow_corner_bottom_active = buffer_create_cairo(
total_active_size, total_active_size, 1.0, true);
total_active_size, total_active_size, 1.0);
if (!theme->shadow_corner_top_active
|| !theme->shadow_corner_bottom_active
|| !theme->shadow_edge_active) {
@ -1420,11 +1420,11 @@ create_shadows(struct theme *theme)
}
if (visible_inactive_size > 0) {
theme->shadow_edge_inactive = buffer_create_cairo(
visible_inactive_size, 1, 1.0, true);
visible_inactive_size, 1, 1.0);
theme->shadow_corner_top_inactive = buffer_create_cairo(
total_inactive_size, total_inactive_size, 1.0, true);
total_inactive_size, total_inactive_size, 1.0);
theme->shadow_corner_bottom_inactive = buffer_create_cairo(
total_inactive_size, total_inactive_size, 1.0, true);
total_inactive_size, total_inactive_size, 1.0);
if (!theme->shadow_corner_top_inactive
|| !theme->shadow_corner_bottom_inactive
|| !theme->shadow_edge_inactive) {