window-actor: Factor out framebuffer creation of get_image()
So we can reuse the code in the following commit. Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1893>
This commit is contained in:
Robert Mader
Marge Bot
parent
a4223007e2
commit
6bbb216f07
1 changed files with 91 additions and 73 deletions
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@ -1411,6 +1411,60 @@ meta_window_actor_notify_damaged (MetaWindowActor *window_actor)
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g_signal_emit (window_actor, signals[DAMAGED], 0);
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}
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static CoglFramebuffer *
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create_framebuffer_from_window_actor (MetaWindowActor *self,
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MetaRectangle *clip,
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GError **error)
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{
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ClutterActor *actor = CLUTTER_ACTOR (self);
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MetaBackend *backend = meta_get_backend ();
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ClutterBackend *clutter_backend = meta_backend_get_clutter_backend (backend);
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CoglContext *cogl_context =
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clutter_backend_get_cogl_context (clutter_backend);
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CoglTexture2D *texture;
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CoglOffscreen *offscreen;
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CoglFramebuffer *framebuffer;
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CoglColor clear_color;
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ClutterPaintContext *paint_context;
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float resource_scale;
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resource_scale = clutter_actor_get_resource_scale (actor);
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texture = cogl_texture_2d_new_with_size (cogl_context,
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clip->width * resource_scale,
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clip->height * resource_scale);
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if (!texture)
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return NULL;
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cogl_primitive_texture_set_auto_mipmap (COGL_PRIMITIVE_TEXTURE (texture),
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FALSE);
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offscreen = cogl_offscreen_new_with_texture (COGL_TEXTURE (texture));
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framebuffer = COGL_FRAMEBUFFER (offscreen);
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cogl_object_unref (texture);
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if (!cogl_framebuffer_allocate (framebuffer, error))
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{
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g_object_unref (framebuffer);
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return NULL;
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}
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cogl_color_init_from_4ub (&clear_color, 0, 0, 0, 0);
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cogl_framebuffer_clear (framebuffer, COGL_BUFFER_BIT_COLOR, &clear_color);
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cogl_framebuffer_orthographic (framebuffer, 0, 0, clip->width, clip->height,
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0, 1.0);
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cogl_framebuffer_translate (framebuffer, -clip->x, -clip->y, 0);
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paint_context =
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clutter_paint_context_new_for_framebuffer (framebuffer, NULL,
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CLUTTER_PAINT_FLAG_NONE);
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clutter_actor_paint (actor, paint_context);
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clutter_paint_context_destroy (paint_context);
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return framebuffer;
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}
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/**
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* meta_window_actor_get_image:
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* @self: A #MetaWindowActor
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@ -1430,21 +1484,11 @@ meta_window_actor_get_image (MetaWindowActor *self,
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{
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MetaWindowActorPrivate *priv = meta_window_actor_get_instance_private (self);
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ClutterActor *actor = CLUTTER_ACTOR (self);
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MetaBackend *backend = meta_get_backend ();
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ClutterBackend *clutter_backend = meta_backend_get_clutter_backend (backend);
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CoglContext *cogl_context =
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clutter_backend_get_cogl_context (clutter_backend);
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float resource_scale;
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float width, height;
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CoglTexture2D *texture;
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g_autoptr (GError) error = NULL;
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CoglOffscreen *offscreen;
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CoglFramebuffer *framebuffer;
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CoglColor clear_color;
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float x, y;
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MetaRectangle scaled_clip;
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ClutterPaintContext *paint_context;
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cairo_surface_t *surface = NULL;
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CoglFramebuffer *framebuffer;
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MetaRectangle framebuffer_clip;
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float resource_scale;
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float x, y, width, height;
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if (!priv->surface)
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return NULL;
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@ -1458,7 +1502,6 @@ meta_window_actor_get_image (MetaWindowActor *self,
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if (clip)
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{
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int geometry_scale;
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geometry_scale =
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@ -1476,76 +1519,51 @@ meta_window_actor_get_image (MetaWindowActor *self,
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goto out;
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}
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clutter_actor_get_position (actor, &x, &y);
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clutter_actor_get_size (actor, &width, &height);
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if (width == 0 || height == 0)
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goto out;
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resource_scale = clutter_actor_get_resource_scale (actor);
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width = ceilf (width * resource_scale);
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height = ceilf (height * resource_scale);
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texture = cogl_texture_2d_new_with_size (cogl_context, width, height);
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if (!texture)
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goto out;
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cogl_primitive_texture_set_auto_mipmap (COGL_PRIMITIVE_TEXTURE (texture),
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FALSE);
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offscreen = cogl_offscreen_new_with_texture (COGL_TEXTURE (texture));
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framebuffer = COGL_FRAMEBUFFER (offscreen);
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cogl_object_unref (texture);
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if (!cogl_framebuffer_allocate (framebuffer, &error))
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{
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g_warning ("Failed to allocate framebuffer for screenshot: %s",
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error->message);
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g_object_unref (framebuffer);
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cogl_object_unref (texture);
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goto out;
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}
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cogl_color_init_from_4ub (&clear_color, 0, 0, 0, 0);
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clutter_actor_get_position (actor, &x, &y);
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cogl_framebuffer_clear (framebuffer, COGL_BUFFER_BIT_COLOR, &clear_color);
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cogl_framebuffer_orthographic (framebuffer, 0, 0, width, height, 0, 1.0);
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cogl_framebuffer_scale (framebuffer, resource_scale, resource_scale, 1);
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cogl_framebuffer_translate (framebuffer, -x, -y, 0);
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paint_context =
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clutter_paint_context_new_for_framebuffer (framebuffer, NULL,
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CLUTTER_PAINT_FLAG_NONE);
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clutter_actor_paint (actor, paint_context);
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clutter_paint_context_destroy (paint_context);
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framebuffer_clip = (MetaRectangle) {
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.x = floorf (x),
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.y = floorf (y),
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.width = ceilf (width),
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.height = ceilf (height),
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};
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if (clip)
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{
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meta_rectangle_scale_double (clip, resource_scale,
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META_ROUNDING_STRATEGY_GROW,
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&scaled_clip);
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meta_rectangle_intersect (&scaled_clip,
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&(MetaRectangle) {
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.width = width,
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.height = height,
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},
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&scaled_clip);
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}
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else
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{
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scaled_clip = (MetaRectangle) {
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.width = width,
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.height = height,
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};
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MetaRectangle tmp_clip;
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MetaRectangle intersected_clip;
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tmp_clip = *clip;
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tmp_clip.x += floorf (x);
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tmp_clip.y += floorf (y);
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if (!meta_rectangle_intersect (&framebuffer_clip,
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&tmp_clip,
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&intersected_clip))
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goto out;
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framebuffer_clip = intersected_clip;
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}
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framebuffer = create_framebuffer_from_window_actor (self,
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&framebuffer_clip,
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NULL);
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if (!framebuffer)
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goto out;
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resource_scale = clutter_actor_get_resource_scale (actor);
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surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
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scaled_clip.width, scaled_clip.height);
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framebuffer_clip.width *
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resource_scale,
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framebuffer_clip.height *
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resource_scale);
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cogl_framebuffer_read_pixels (framebuffer,
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scaled_clip.x, scaled_clip.y,
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scaled_clip.width, scaled_clip.height,
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0, 0,
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framebuffer_clip.width * resource_scale,
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framebuffer_clip.height * resource_scale,
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CLUTTER_CAIRO_FORMAT_ARGB32,
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cairo_image_surface_get_data (surface));
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