shell-screenshot: Change to use clutter_stage_paint_to*() API
This eliminates the need to wait for redraws, drawing cursors, and stiching together cairo images in case the screenshot covers multiple monitors. All of that is now handled by mutter itself. https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1383
This commit is contained in:
Jonas Ådahl
Georges Basile Stavracas Neto
parent
c2b70101f2
commit
757e4b6731
@ -12,6 +12,12 @@
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#include "shell-screenshot.h"
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#include "shell-util.h"
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typedef enum _ShellScreenshotFlag
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{
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SHELL_SCREENSHOT_FLAG_NONE,
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SHELL_SCREENSHOT_FLAG_INCLUDE_CURSOR,
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} ShellScreenshotFlag;
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typedef struct _ShellScreenshotPrivate ShellScreenshotPrivate;
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struct _ShellScreenshot
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@ -32,7 +38,6 @@ struct _ShellScreenshotPrivate
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cairo_surface_t *image;
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cairo_rectangle_int_t screenshot_area;
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gboolean include_cursor;
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gboolean include_frame;
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};
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@ -45,10 +50,6 @@ typedef enum
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G_DEFINE_TYPE_WITH_PRIVATE (ShellScreenshot, shell_screenshot, G_TYPE_OBJECT);
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static void
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grab_screenshot (ClutterActor *stage,
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GTask *result);
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static void
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shell_screenshot_class_init (ShellScreenshotClass *screenshot_class)
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{
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@ -77,8 +78,6 @@ on_screenshot_written (GObject *source,
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g_clear_pointer (&priv->image, cairo_surface_destroy);
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g_clear_object (&priv->stream);
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g_clear_pointer (&priv->datetime, g_date_time_unref);
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meta_enable_unredirect_for_display (shell_global_get_display (priv->global));
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}
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static void
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@ -122,62 +121,48 @@ write_screenshot_thread (GTask *result,
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static void
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do_grab_screenshot (ShellScreenshot *screenshot,
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ClutterStage *stage,
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int x,
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int y,
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int width,
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int height)
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int height,
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ShellScreenshotFlag flags)
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{
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ShellScreenshotPrivate *priv = screenshot->priv;
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ClutterStage *stage = shell_global_get_stage (priv->global);
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cairo_rectangle_int_t screenshot_rect = { x, y, width, height };
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ClutterCapture *captures;
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int n_captures;
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int i;
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if (!clutter_stage_capture (stage, FALSE,
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&screenshot_rect,
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&captures,
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&n_captures))
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return;
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if (n_captures == 1)
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priv->image = cairo_surface_reference (captures[0].image);
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else
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{
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float target_scale;
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int image_width;
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int image_height;
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float scale;
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cairo_surface_t *image;
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ClutterPaintFlag paint_flags = CLUTTER_PAINT_FLAG_NONE;
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g_autoptr (GError) error = NULL;
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clutter_stage_get_capture_final_size (stage, &screenshot_rect,
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&width, &height, &target_scale);
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priv->image = shell_util_composite_capture_images (captures,
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n_captures,
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x, y,
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width, height,
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target_scale);
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&image_width,
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&image_height,
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&scale);
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image = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
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image_width, image_height);
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if (flags & SHELL_SCREENSHOT_FLAG_INCLUDE_CURSOR)
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paint_flags |= CLUTTER_PAINT_FLAG_FORCE_CURSORS;
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else
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paint_flags |= CLUTTER_PAINT_FLAG_NO_CURSORS;
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if (!clutter_stage_paint_to_buffer (stage, &screenshot_rect, scale,
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cairo_image_surface_get_data (image),
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cairo_image_surface_get_stride (image),
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CLUTTER_CAIRO_FORMAT_ARGB32,
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paint_flags,
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&error))
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{
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cairo_surface_destroy (image);
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g_warning ("Failed to take screenshot: %s", error->message);
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return;
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}
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priv->image = image;
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priv->datetime = g_date_time_new_now_local ();
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for (i = 0; i < n_captures; i++)
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cairo_surface_destroy (captures[i].image);
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g_free (captures);
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}
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static gboolean
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should_draw_cursor_image (ShellScreenshotMode mode)
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{
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if (mode == SHELL_SCREENSHOT_WINDOW || !meta_is_wayland_compositor ())
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{
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StSettings *settings = st_settings_get ();
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gboolean magnifier_active = FALSE;
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g_object_get (settings, "magnifier-active", &magnifier_active, NULL);
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if (!magnifier_active)
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return TRUE;
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}
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return FALSE;
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}
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static void
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@ -256,116 +241,37 @@ draw_cursor_image (cairo_surface_t *surface,
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}
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static void
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on_paint (ClutterActor *actor,
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ClutterPaintContext *paint_context,
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GTask *result)
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{
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grab_screenshot (actor, result);
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}
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static void
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on_actors_painted (ClutterActor *actor,
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GTask *result)
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{
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grab_screenshot (actor, result);
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}
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static void
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grab_screenshot (ClutterActor *stage,
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grab_screenshot (ShellScreenshot *screenshot,
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ShellScreenshotFlag flags,
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GTask *result)
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{
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ShellScreenshotPrivate *priv = screenshot->priv;
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MetaDisplay *display;
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int width, height;
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ShellScreenshot *screenshot = g_task_get_source_object (result);
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ShellScreenshotPrivate *priv = screenshot->priv;
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GTask *task;
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display = shell_global_get_display (priv->global);
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meta_display_get_size (display, &width, &height);
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do_grab_screenshot (screenshot, CLUTTER_STAGE (stage), 0, 0, width, height);
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if (meta_display_get_n_monitors (display) > 1)
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{
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cairo_region_t *screen_region = cairo_region_create ();
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cairo_region_t *stage_region;
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MetaRectangle monitor_rect;
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cairo_rectangle_int_t stage_rect;
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int i;
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cairo_t *cr;
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for (i = meta_display_get_n_monitors (display) - 1; i >= 0; i--)
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{
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meta_display_get_monitor_geometry (display, i, &monitor_rect);
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cairo_region_union_rectangle (screen_region,
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(const cairo_rectangle_int_t *) &monitor_rect);
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}
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stage_rect.x = 0;
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stage_rect.y = 0;
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stage_rect.width = width;
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stage_rect.height = height;
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stage_region = cairo_region_create_rectangle ((const cairo_rectangle_int_t *) &stage_rect);
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cairo_region_xor (stage_region, screen_region);
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cairo_region_destroy (screen_region);
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cr = cairo_create (priv->image);
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for (i = 0; i < cairo_region_num_rectangles (stage_region); i++)
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{
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cairo_rectangle_int_t rect;
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cairo_region_get_rectangle (stage_region, i, &rect);
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cairo_rectangle (cr, (double) rect.x, (double) rect.y, (double) rect.width, (double) rect.height);
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cairo_fill (cr);
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}
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cairo_destroy (cr);
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cairo_region_destroy (stage_region);
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}
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do_grab_screenshot (screenshot,
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0, 0, width, height,
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flags);
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priv->screenshot_area.x = 0;
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priv->screenshot_area.y = 0;
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priv->screenshot_area.width = width;
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priv->screenshot_area.height = height;
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if (priv->include_cursor)
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draw_cursor_image (priv->image, priv->screenshot_area);
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g_signal_handlers_disconnect_by_func (stage, on_paint, result);
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g_signal_handlers_disconnect_by_func (stage, on_actors_painted, result);
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task = g_task_new (screenshot, NULL, on_screenshot_written, result);
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g_task_run_in_thread (task, write_screenshot_thread);
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g_object_unref (task);
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}
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static void
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grab_area_screenshot (ClutterActor *stage,
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grab_window_screenshot (ShellScreenshot *screenshot,
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ShellScreenshotFlag flags,
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GTask *result)
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{
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ShellScreenshot *screenshot = g_task_get_source_object (result);
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ShellScreenshotPrivate *priv = screenshot->priv;
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GTask *task;
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do_grab_screenshot (screenshot,
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CLUTTER_STAGE (stage),
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priv->screenshot_area.x,
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priv->screenshot_area.y,
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priv->screenshot_area.width,
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priv->screenshot_area.height);
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g_signal_handlers_disconnect_by_func (stage, grab_area_screenshot, result);
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task = g_task_new (screenshot, NULL, on_screenshot_written, result);
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g_task_run_in_thread (task, write_screenshot_thread);
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g_object_unref (task);
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}
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static void
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grab_window_screenshot (ClutterActor *stage,
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GTask *result)
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{
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ShellScreenshot *screenshot = g_task_get_source_object (result);
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ShellScreenshotPrivate *priv = screenshot->priv;
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GTask *task;
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MetaDisplay *display = shell_global_get_display (priv->global);
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@ -388,7 +294,7 @@ grab_window_screenshot (ClutterActor *stage,
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NULL);
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priv->datetime = g_date_time_new_now_local ();
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if (priv->include_cursor)
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if (flags & SHELL_SCREENSHOT_FLAG_INCLUDE_CURSOR)
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{
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if (meta_window_get_client_type (window) == META_WINDOW_CLIENT_TYPE_WAYLAND)
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{
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@ -401,33 +307,11 @@ grab_window_screenshot (ClutterActor *stage,
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draw_cursor_image (priv->image, priv->screenshot_area);
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}
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g_signal_handlers_disconnect_by_func (stage, grab_window_screenshot, result);
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task = g_task_new (screenshot, NULL, on_screenshot_written, result);
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g_task_run_in_thread (task, write_screenshot_thread);
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g_object_unref (task);
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}
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static void
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grab_pixel (ClutterActor *stage,
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GTask *result)
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{
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ShellScreenshot *screenshot = g_task_get_source_object (result);
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ShellScreenshotPrivate *priv = screenshot->priv;
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do_grab_screenshot (screenshot,
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CLUTTER_STAGE (stage),
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priv->screenshot_area.x,
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priv->screenshot_area.y,
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1,
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1);
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meta_enable_unredirect_for_display (shell_global_get_display (priv->global));
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g_signal_handlers_disconnect_by_func (stage, grab_pixel, result);
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g_task_return_boolean (result, TRUE);
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g_object_unref (result);
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}
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static gboolean
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finish_screenshot (ShellScreenshot *screenshot,
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GAsyncResult *result,
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@ -465,10 +349,9 @@ shell_screenshot_screenshot (ShellScreenshot *screenshot,
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GAsyncReadyCallback callback,
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gpointer user_data)
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{
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ClutterActor *stage;
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ShellScreenshotPrivate *priv;
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gboolean use_paint_signal = FALSE;
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GTask *result;
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ShellScreenshotFlag flags;
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g_return_if_fail (SHELL_IS_SCREENSHOT (screenshot));
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g_return_if_fail (G_IS_OUTPUT_STREAM (stream));
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@ -492,34 +375,12 @@ shell_screenshot_screenshot (ShellScreenshot *screenshot,
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g_task_set_source_tag (result, shell_screenshot_screenshot);
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priv->stream = g_object_ref (stream);
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priv->include_cursor = FALSE;
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stage = CLUTTER_ACTOR (shell_global_get_stage (priv->global));
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meta_disable_unredirect_for_display (shell_global_get_display (priv->global));
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flags = SHELL_SCREENSHOT_FLAG_NONE;
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if (include_cursor)
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{
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if (should_draw_cursor_image (SHELL_SCREENSHOT_SCREEN))
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priv->include_cursor = TRUE;
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else
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use_paint_signal = TRUE;
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}
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flags |= SHELL_SCREENSHOT_FLAG_INCLUDE_CURSOR;
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if (use_paint_signal)
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{
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g_signal_connect_after (stage, "paint",
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G_CALLBACK (on_paint),
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result);
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}
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else
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{
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g_signal_connect_after (stage, "actors-painted",
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G_CALLBACK (on_actors_painted),
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result);
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}
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clutter_actor_queue_redraw (stage);
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grab_screenshot (screenshot, flags, result);
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}
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/**
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@ -575,9 +436,9 @@ shell_screenshot_screenshot_area (ShellScreenshot *screenshot,
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GAsyncReadyCallback callback,
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gpointer user_data)
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{
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ClutterActor *stage;
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ShellScreenshotPrivate *priv;
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GTask *result;
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g_autoptr (GTask) task = NULL;
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g_return_if_fail (SHELL_IS_SCREENSHOT (screenshot));
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g_return_if_fail (G_IS_OUTPUT_STREAM (stream));
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@ -606,13 +467,15 @@ shell_screenshot_screenshot_area (ShellScreenshot *screenshot,
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priv->screenshot_area.width = width;
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priv->screenshot_area.height = height;
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stage = CLUTTER_ACTOR (shell_global_get_stage (priv->global));
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do_grab_screenshot (screenshot,
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priv->screenshot_area.x,
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priv->screenshot_area.y,
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priv->screenshot_area.width,
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priv->screenshot_area.height,
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SHELL_SCREENSHOT_FLAG_NONE);
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meta_disable_unredirect_for_display (shell_global_get_display (shell_global_get ()));
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g_signal_connect_after (stage, "actors-painted", G_CALLBACK (grab_area_screenshot), result);
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clutter_actor_queue_redraw (stage);
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task = g_task_new (screenshot, NULL, on_screenshot_written, result);
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g_task_run_in_thread (task, write_screenshot_thread);
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}
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/**
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@ -666,7 +529,6 @@ shell_screenshot_screenshot_window (ShellScreenshot *screenshot,
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{
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ShellScreenshotPrivate *priv;
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MetaDisplay *display;
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ClutterActor *stage;
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MetaWindow *window;
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GTask *result;
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@ -695,16 +557,8 @@ shell_screenshot_screenshot_window (ShellScreenshot *screenshot,
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priv->stream = g_object_ref (stream);
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priv->include_frame = include_frame;
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priv->include_cursor = include_cursor &&
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should_draw_cursor_image (SHELL_SCREENSHOT_WINDOW);
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stage = CLUTTER_ACTOR (shell_global_get_stage (priv->global));
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meta_disable_unredirect_for_display (shell_global_get_display (shell_global_get ()));
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g_signal_connect_after (stage, "actors-painted", G_CALLBACK (grab_window_screenshot), result);
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clutter_actor_queue_redraw (stage);
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grab_window_screenshot (screenshot, include_cursor, result);
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}
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/**
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@ -753,9 +607,7 @@ shell_screenshot_pick_color (ShellScreenshot *screenshot,
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gpointer user_data)
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{
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ShellScreenshotPrivate *priv;
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MetaDisplay *display;
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ClutterActor *stage;
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GTask *result;
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g_autoptr (GTask) result = NULL;
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g_return_if_fail (SHELL_IS_SCREENSHOT (screenshot));
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@ -769,14 +621,14 @@ shell_screenshot_pick_color (ShellScreenshot *screenshot,
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priv->screenshot_area.width = 1;
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priv->screenshot_area.height = 1;
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display = shell_global_get_display (priv->global);
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stage = CLUTTER_ACTOR (shell_global_get_stage (priv->global));
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do_grab_screenshot (screenshot,
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priv->screenshot_area.x,
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priv->screenshot_area.y,
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1,
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1,
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SHELL_SCREENSHOT_FLAG_NONE);
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meta_disable_unredirect_for_display (display);
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g_signal_connect_after (stage, "actors-painted", G_CALLBACK (grab_pixel), result);
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clutter_actor_queue_redraw (stage);
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g_task_return_boolean (result, TRUE);
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}
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#if G_BYTE_ORDER == G_LITTLE_ENDIAN
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