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wlr_scene_surface: Introduce scene_surface_set_clip

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This commit is contained in:
Alexander Orzechowski 2023-11-13 01:25:34 -05:00 committed by Isaac Freund
parent c6d356648c
commit d1ddd4ca3a
3 changed files with 72 additions and 4 deletions
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2
include/types/wlr_scene.h
View file

@ -5,4 +5,6 @@
struct wlr_scene *scene_node_get_root(struct wlr_scene_node *node);
void scene_surface_set_clip(struct wlr_scene_surface *surface, struct wlr_box *clip);
#endif

2
include/wlr/types/wlr_scene.h
View file

@ -119,6 +119,8 @@ struct wlr_scene_surface {
// private state
struct wlr_box clip;
struct wlr_addon addon;
struct wl_listener outputs_update;

72
types/scene/surface.c
View file

@ -100,18 +100,63 @@ static void scene_buffer_unmark_client_buffer(struct wlr_scene_buffer *scene_buf
buffer->n_ignore_locks--;
}
static int min(int a, int b) {
return a < b ? a : b;
}
static void surface_reconfigure(struct wlr_scene_surface *scene_surface) {
struct wlr_scene_buffer *scene_buffer = scene_surface->buffer;
struct wlr_surface *surface = scene_surface->surface;
struct wlr_surface_state *state = &surface->current;
wlr_scene_buffer_set_opaque_region(scene_buffer, &surface->opaque_region);
struct wlr_fbox src_box;
wlr_surface_get_buffer_source_box(surface, &src_box);
wlr_scene_buffer_set_source_box(scene_buffer, &src_box);
wlr_scene_buffer_set_dest_size(scene_buffer, state->width, state->height);
pixman_region32_t opaque;
pixman_region32_init(&opaque);
pixman_region32_copy(&opaque, &surface->opaque_region);
int width = state->width;
int height = state->height;
if (!wlr_box_empty(&scene_surface->clip)) {
struct wlr_box *clip = &scene_surface->clip;
int buffer_width = state->buffer_width;
int buffer_height = state->buffer_height;
width = min(clip->width, width - clip->x);
height = min(clip->height, height - clip->y);
wlr_fbox_transform(&src_box, &src_box, state->transform,
buffer_width, buffer_height);
if (state->transform & WL_OUTPUT_TRANSFORM_90) {
int tmp = buffer_width;
buffer_width = buffer_height;
buffer_height = tmp;
}
src_box.x += (double)(clip->x * buffer_width) / state->width;
src_box.y += (double)(clip->y * buffer_height) / state->height;
src_box.width *= (double)width / state->width;
src_box.height *= (double)height / state->height;
wlr_fbox_transform(&src_box, &src_box, wlr_output_transform_invert(state->transform),
buffer_width, buffer_height);
pixman_region32_translate(&opaque, -clip->x, -clip->y);
pixman_region32_intersect_rect(&opaque, &opaque, 0, 0, width, height);
}
if (width <= 0 || height <= 0) {
wlr_scene_buffer_set_buffer(scene_buffer, NULL);
pixman_region32_fini(&opaque);
return;
}
wlr_scene_buffer_set_opaque_region(scene_buffer, &opaque);
wlr_scene_buffer_set_source_box(scene_buffer, &src_box);
wlr_scene_buffer_set_dest_size(scene_buffer, width, height);
wlr_scene_buffer_set_transform(scene_buffer, state->transform);
scene_buffer_unmark_client_buffer(scene_buffer);
@ -124,6 +169,8 @@ static void surface_reconfigure(struct wlr_scene_surface *scene_surface) {
} else {
wlr_scene_buffer_set_buffer(scene_buffer, NULL);
}
pixman_region32_fini(&opaque);
}
static void handle_scene_surface_surface_commit(
@ -153,6 +200,9 @@ static bool scene_buffer_point_accepts_input(struct wlr_scene_buffer *scene_buff
struct wlr_scene_surface *scene_surface =
wlr_scene_surface_try_from_buffer(scene_buffer);
*sx += scene_surface->clip.x;
*sy += scene_surface->clip.y;
return wlr_surface_point_accepts_input(scene_surface->surface, *sx, *sy);
}
@ -236,3 +286,17 @@ struct wlr_scene_surface *wlr_scene_surface_create(struct wlr_scene_tree *parent
return surface;
}
void scene_surface_set_clip(struct wlr_scene_surface *surface, struct wlr_box *clip) {
if (wlr_box_equal(clip, &surface->clip)) {
return;
}
if (clip) {
surface->clip = *clip;
} else {
surface->clip = (struct wlr_box){0};
}
surface_reconfigure(surface);
}