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clutter: Add clutter_stage_paint_to_content ()

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Used in the new screenshot UI.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1899>
This commit is contained in:
Ivan Molodetskikh 2021-06-16 21:45:02 +03:00 committed by Marge Bot
parent c382dc0d23
commit 13a2a33257
2 changed files with 62 additions and 0 deletions
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55
clutter/clutter/clutter-stage.c
View File

@ -3269,6 +3269,61 @@ clutter_stage_paint_to_buffer (ClutterStage *stage,
return TRUE;
}
/**
* clutter_stage_paint_to_content:
* @stage: a #ClutterStage actor
* @rect: a #cairo_rectangle_int_t
* @scale: the scale
* @paint_flags: the #ClutterPaintFlag
* @error: the error
*
* Take a snapshot of the stage to a #ClutterContent.
*
* Returns: (transfer full): the #ClutterContent or %NULL on error.
*/
ClutterContent *
clutter_stage_paint_to_content (ClutterStage *stage,
const cairo_rectangle_int_t *rect,
float scale,
ClutterPaintFlag paint_flags,
GError **error)
{
ClutterBackend *clutter_backend = clutter_get_default_backend ();
CoglContext *cogl_context =
clutter_backend_get_cogl_context (clutter_backend);
int texture_width, texture_height;
CoglTexture2D *texture;
CoglOffscreen *offscreen;
g_autoptr (CoglFramebuffer) framebuffer = NULL;
texture_width = (int) roundf (rect->width * scale);
texture_height = (int) roundf (rect->height * scale);
texture = cogl_texture_2d_new_with_size (cogl_context,
texture_width,
texture_height);
if (!texture)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Failed to create %dx%d texture",
texture_width, texture_height);
return NULL;
}
offscreen = cogl_offscreen_new_with_texture (COGL_TEXTURE (texture));
framebuffer = COGL_FRAMEBUFFER (offscreen);
cogl_object_unref (texture);
if (!cogl_framebuffer_allocate (framebuffer, error))
return NULL;
clutter_stage_paint_to_framebuffer (stage, framebuffer,
rect, scale, paint_flags);
return clutter_texture_content_new_from_texture (cogl_offscreen_get_texture (offscreen),
NULL);
}
void
clutter_stage_capture_view_into (ClutterStage *stage,
ClutterStageView *view,

7
clutter/clutter/clutter-stage.h
View File

@ -252,6 +252,13 @@ gboolean clutter_stage_paint_to_buffer (ClutterStage *stage,
ClutterPaintFlag paint_flags,
GError **error);
CLUTTER_EXPORT
ClutterContent * clutter_stage_paint_to_content (ClutterStage *stage,
const cairo_rectangle_int_t *rect,
float scale,
ClutterPaintFlag paint_flags,
GError **error);
CLUTTER_EXPORT
ClutterStageView * clutter_stage_get_view_at (ClutterStage *stage,
float x,