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https://github.com/brl/mutter.git
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3cc3b7526c
We rely on the frame clock to compress input events, thus if the frame clock stops, input events are not dispatched. At the same time, there is no reason to redraw at a full frame rate, as nothing will be presented anyway, so slow down to 10Hz (compared to the most common 60Hz). Note that we'll only actually reach 10Hz if there is an active animation being displayed, which won't happen e.g. if there is a screen shield in the way. https://gitlab.gnome.org/GNOME/mutter/merge_requests/506
349 lines
9.1 KiB
C
349 lines
9.1 KiB
C
/*
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* Copyright (C) 2014 Red Hat
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*
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* Written by:
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* Jasper St. Pierre <jstpierre@mecheye.net>
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*/
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#include "config.h"
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#include "backends/meta-stage-private.h"
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#include "backends/meta-backend-private.h"
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#include "clutter/clutter-mutter.h"
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#include "meta/meta-backend.h"
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#include "meta/meta-monitor-manager.h"
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#include "meta/util.h"
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enum
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{
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ACTORS_PAINTED,
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N_SIGNALS
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};
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static guint signals[N_SIGNALS];
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struct _MetaOverlay
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{
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gboolean enabled;
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CoglPipeline *pipeline;
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CoglTexture *texture;
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ClutterRect current_rect;
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ClutterRect previous_rect;
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gboolean previous_is_valid;
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};
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struct _MetaStage
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{
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ClutterStage parent;
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GList *overlays;
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gboolean is_active;
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};
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G_DEFINE_TYPE (MetaStage, meta_stage, CLUTTER_TYPE_STAGE);
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static MetaOverlay *
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meta_overlay_new (void)
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{
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MetaOverlay *overlay;
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CoglContext *ctx = clutter_backend_get_cogl_context (clutter_get_default_backend ());
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overlay = g_slice_new0 (MetaOverlay);
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overlay->pipeline = cogl_pipeline_new (ctx);
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return overlay;
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}
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static void
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meta_overlay_free (MetaOverlay *overlay)
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{
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if (overlay->pipeline)
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cogl_object_unref (overlay->pipeline);
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g_slice_free (MetaOverlay, overlay);
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}
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static void
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meta_overlay_set (MetaOverlay *overlay,
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CoglTexture *texture,
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ClutterRect *rect)
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{
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if (overlay->texture != texture)
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{
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overlay->texture = texture;
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if (texture)
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{
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cogl_pipeline_set_layer_texture (overlay->pipeline, 0, texture);
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overlay->enabled = TRUE;
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}
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else
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{
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cogl_pipeline_set_layer_texture (overlay->pipeline, 0, NULL);
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overlay->enabled = FALSE;
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}
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}
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overlay->current_rect = *rect;
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}
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static void
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meta_overlay_paint (MetaOverlay *overlay)
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{
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if (!overlay->enabled)
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return;
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g_assert (meta_is_wayland_compositor ());
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cogl_framebuffer_draw_rectangle (cogl_get_draw_framebuffer (),
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overlay->pipeline,
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overlay->current_rect.origin.x,
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overlay->current_rect.origin.y,
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(overlay->current_rect.origin.x +
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overlay->current_rect.size.width),
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(overlay->current_rect.origin.y +
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overlay->current_rect.size.height));
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if (!clutter_rect_equals (&overlay->previous_rect, &overlay->current_rect))
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{
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overlay->previous_rect = overlay->current_rect;
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overlay->previous_is_valid = TRUE;
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}
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}
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static void
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meta_stage_finalize (GObject *object)
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{
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MetaStage *stage = META_STAGE (object);
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GList *l;
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l = stage->overlays;
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while (l)
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{
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meta_overlay_free (l->data);
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l = g_list_delete_link (l, l);
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}
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G_OBJECT_CLASS (meta_stage_parent_class)->finalize (object);
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}
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static void
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meta_stage_paint (ClutterActor *actor)
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{
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MetaStage *stage = META_STAGE (actor);
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GList *l;
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CLUTTER_ACTOR_CLASS (meta_stage_parent_class)->paint (actor);
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g_signal_emit (stage, signals[ACTORS_PAINTED], 0);
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for (l = stage->overlays; l; l = l->next)
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meta_overlay_paint (l->data);
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}
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static void
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meta_stage_activate (ClutterStage *actor)
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{
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MetaStage *stage = META_STAGE (actor);
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CLUTTER_STAGE_CLASS (meta_stage_parent_class)->activate (actor);
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stage->is_active = TRUE;
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}
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static void
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meta_stage_deactivate (ClutterStage *actor)
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{
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MetaStage *stage = META_STAGE (actor);
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CLUTTER_STAGE_CLASS (meta_stage_parent_class)->deactivate (actor);
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stage->is_active = FALSE;
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}
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static void
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on_power_save_changed (MetaMonitorManager *monitor_manager,
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MetaStage *stage)
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{
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if (meta_monitor_manager_get_power_save_mode (monitor_manager) ==
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META_POWER_SAVE_ON)
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clutter_actor_queue_redraw (CLUTTER_ACTOR (stage));
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}
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static void
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meta_stage_class_init (MetaStageClass *klass)
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{
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ClutterStageClass *stage_class = (ClutterStageClass *) klass;
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ClutterActorClass *actor_class = (ClutterActorClass *) klass;
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GObjectClass *object_class = (GObjectClass *) klass;
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object_class->finalize = meta_stage_finalize;
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actor_class->paint = meta_stage_paint;
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stage_class->activate = meta_stage_activate;
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stage_class->deactivate = meta_stage_deactivate;
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signals[ACTORS_PAINTED] = g_signal_new ("actors-painted",
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G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_LAST,
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0,
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NULL, NULL, NULL,
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G_TYPE_NONE, 0);
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}
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static void
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meta_stage_init (MetaStage *stage)
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{
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clutter_stage_set_user_resizable (CLUTTER_STAGE (stage), FALSE);
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}
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ClutterActor *
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meta_stage_new (MetaBackend *backend)
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{
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MetaStage *stage;
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MetaMonitorManager *monitor_manager;
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stage = g_object_new (META_TYPE_STAGE,
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"cursor-visible", FALSE,
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NULL);
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monitor_manager = meta_backend_get_monitor_manager (backend);
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g_signal_connect (monitor_manager, "power-save-mode-changed",
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G_CALLBACK (on_power_save_changed),
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stage);
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return CLUTTER_ACTOR (stage);
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}
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static void
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queue_redraw_clutter_rect (MetaStage *stage,
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MetaOverlay *overlay,
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ClutterRect *rect)
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{
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cairo_rectangle_int_t clip = {
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.x = floorf (rect->origin.x),
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.y = floorf (rect->origin.y),
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.width = ceilf (rect->size.width),
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.height = ceilf (rect->size.height)
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};
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/* Since we're flooring the coordinates, we need to enlarge the clip by the
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* difference between the actual coordinate and the floored value */
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clip.width += ceilf (rect->origin.x - clip.x) * 2;
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clip.height += ceilf (rect->origin.y - clip.y) * 2;
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clutter_actor_queue_redraw_with_clip (CLUTTER_ACTOR (stage), &clip);
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}
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static void
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queue_redraw_for_overlay (MetaStage *stage,
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MetaOverlay *overlay)
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{
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/* Clear the location the overlay was at before, if we need to. */
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if (overlay->previous_is_valid)
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{
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queue_redraw_clutter_rect (stage, overlay, &overlay->previous_rect);
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overlay->previous_is_valid = FALSE;
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}
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/* Draw the overlay at the new position */
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if (overlay->enabled)
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queue_redraw_clutter_rect (stage, overlay, &overlay->current_rect);
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}
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MetaOverlay *
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meta_stage_create_cursor_overlay (MetaStage *stage)
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{
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MetaOverlay *overlay;
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overlay = meta_overlay_new ();
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stage->overlays = g_list_prepend (stage->overlays, overlay);
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return overlay;
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}
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void
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meta_stage_remove_cursor_overlay (MetaStage *stage,
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MetaOverlay *overlay)
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{
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GList *link;
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link = g_list_find (stage->overlays, overlay);
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if (!link)
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return;
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stage->overlays = g_list_delete_link (stage->overlays, link);
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meta_overlay_free (overlay);
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}
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void
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meta_stage_update_cursor_overlay (MetaStage *stage,
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MetaOverlay *overlay,
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CoglTexture *texture,
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ClutterRect *rect)
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{
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g_assert (meta_is_wayland_compositor () || texture == NULL);
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meta_overlay_set (overlay, texture, rect);
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queue_redraw_for_overlay (stage, overlay);
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}
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void
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meta_stage_set_active (MetaStage *stage,
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gboolean is_active)
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{
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ClutterEvent event = { 0 };
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/* Used by the native backend to inform accessibility technologies
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* about when the stage loses and gains input focus.
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*
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* For the X11 backend, clutter transparently takes care of this
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* for us.
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*/
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if (stage->is_active == is_active)
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return;
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event.type = CLUTTER_STAGE_STATE;
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clutter_event_set_stage (&event, CLUTTER_STAGE (stage));
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event.stage_state.changed_mask = CLUTTER_STAGE_STATE_ACTIVATED;
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if (is_active)
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event.stage_state.new_state = CLUTTER_STAGE_STATE_ACTIVATED;
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/* Emitting this StageState event will result in the stage getting
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* activated or deactivated (with the activated or deactivated signal
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* getting emitted from the stage)
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*
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* FIXME: This won't update ClutterStage's own notion of its
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* activeness. For that we would need to somehow trigger a
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* _clutter_stage_update_state call, which will probably
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* require new API in clutter. In practice, nothing relies
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* on the ClutterStage's own notion of activeness when using
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* the EGL backend.
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*
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* See http://bugzilla.gnome.org/746670
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*/
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clutter_stage_event (CLUTTER_STAGE (stage), &event);
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}
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