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https://github.com/brl/mutter.git
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508c08fa09
Let the meta_cursor_sprite_realize() function return a boolean value telling whether there was an actual change in the sprite cursor. E.g. the surface/icon for it changed in between. This is used in the native backend to avoid converting/uploading again the cursor surface. Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1915>
535 lines
14 KiB
C
535 lines
14 KiB
C
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
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/*
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* Copyright 2013 Red Hat, Inc.
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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, see <http://www.gnu.org/licenses/>.
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*
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* Author: Giovanni Campagna <gcampagn@redhat.com>
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*/
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/**
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* SECTION:cursor-tracker
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* @title: MetaCursorTracker
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* @short_description: Mutter cursor tracking helper. Originally only
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* tracking the cursor image, now more of a "core
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* pointer abstraction"
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*/
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#include "config.h"
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#include "backends/meta-cursor-tracker-private.h"
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#include <string.h>
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#include "backends/meta-backend-private.h"
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#include "cogl/cogl.h"
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#include "core/display-private.h"
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#include "clutter/clutter.h"
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#include "meta/main.h"
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#include "meta/util.h"
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enum
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{
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PROP_0,
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PROP_BACKEND,
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N_PROPS
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};
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static GParamSpec *obj_props[N_PROPS];
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typedef struct _MetaCursorTrackerPrivate
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{
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MetaBackend *backend;
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gboolean is_showing;
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int track_position_count;
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float x;
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float y;
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MetaCursorSprite *effective_cursor; /* May be NULL when hidden */
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MetaCursorSprite *displayed_cursor;
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/* Wayland clients can set a NULL buffer as their cursor
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* explicitly, which means that we shouldn't display anything.
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* So, we can't simply store a NULL in window_cursor to
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* determine an unset window cursor; we need an extra boolean.
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*/
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gboolean has_window_cursor;
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MetaCursorSprite *window_cursor;
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MetaCursorSprite *root_cursor;
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} MetaCursorTrackerPrivate;
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G_DEFINE_TYPE_WITH_PRIVATE (MetaCursorTracker, meta_cursor_tracker,
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G_TYPE_OBJECT)
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enum
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{
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CURSOR_CHANGED,
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POSITION_INVALIDATED,
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VISIBILITY_CHANGED,
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LAST_SIGNAL
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};
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static guint signals[LAST_SIGNAL];
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void
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meta_cursor_tracker_notify_cursor_changed (MetaCursorTracker *tracker)
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{
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g_signal_emit (tracker, signals[CURSOR_CHANGED], 0);
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}
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static void
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cursor_texture_updated (MetaCursorSprite *cursor,
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MetaCursorTracker *tracker)
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{
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g_signal_emit (tracker, signals[CURSOR_CHANGED], 0);
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}
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static gboolean
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update_displayed_cursor (MetaCursorTracker *tracker)
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{
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MetaCursorTrackerPrivate *priv =
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meta_cursor_tracker_get_instance_private (tracker);
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MetaDisplay *display = meta_get_display ();
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MetaCursorSprite *cursor = NULL;
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if (display && meta_display_windows_are_interactable (display) &&
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priv->has_window_cursor)
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cursor = priv->window_cursor;
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else
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cursor = priv->root_cursor;
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if (priv->displayed_cursor == cursor)
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return FALSE;
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if (priv->displayed_cursor)
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{
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g_signal_handlers_disconnect_by_func (priv->displayed_cursor,
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cursor_texture_updated,
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tracker);
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}
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g_set_object (&priv->displayed_cursor, cursor);
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if (cursor)
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{
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meta_cursor_sprite_invalidate (cursor);
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g_signal_connect (cursor, "texture-changed",
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G_CALLBACK (cursor_texture_updated), tracker);
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}
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return TRUE;
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}
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static gboolean
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update_effective_cursor (MetaCursorTracker *tracker)
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{
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MetaCursorTrackerPrivate *priv =
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meta_cursor_tracker_get_instance_private (tracker);
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MetaCursorSprite *cursor = NULL;
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if (priv->is_showing)
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cursor = priv->displayed_cursor;
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return g_set_object (&priv->effective_cursor, cursor);
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}
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static void
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change_cursor_renderer (MetaCursorTracker *tracker)
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{
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MetaCursorTrackerPrivate *priv =
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meta_cursor_tracker_get_instance_private (tracker);
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MetaCursorRenderer *cursor_renderer =
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meta_backend_get_cursor_renderer (priv->backend);
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meta_cursor_renderer_set_cursor (cursor_renderer, priv->effective_cursor);
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}
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static void
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sync_cursor (MetaCursorTracker *tracker)
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{
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gboolean cursor_changed = FALSE;
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cursor_changed = update_displayed_cursor (tracker);
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if (update_effective_cursor (tracker))
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change_cursor_renderer (tracker);
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if (cursor_changed)
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g_signal_emit (tracker, signals[CURSOR_CHANGED], 0);
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}
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static void
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meta_cursor_tracker_real_set_force_track_position (MetaCursorTracker *tracker,
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gboolean is_enabled)
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{
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}
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static MetaCursorSprite *
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meta_cursor_tracker_real_get_sprite (MetaCursorTracker *tracker)
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{
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MetaCursorTrackerPrivate *priv =
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meta_cursor_tracker_get_instance_private (tracker);
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return priv->displayed_cursor;
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}
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void
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meta_cursor_tracker_destroy (MetaCursorTracker *tracker)
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{
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g_object_run_dispose (G_OBJECT (tracker));
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g_object_unref (tracker);
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}
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static void
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meta_cursor_tracker_init (MetaCursorTracker *tracker)
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{
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MetaCursorTrackerPrivate *priv =
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meta_cursor_tracker_get_instance_private (tracker);
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priv->is_showing = FALSE;
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priv->x = -1.0;
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priv->y = -1.0;
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}
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static void
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meta_cursor_tracker_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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MetaCursorTracker *tracker = META_CURSOR_TRACKER (object);
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MetaCursorTrackerPrivate *priv =
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meta_cursor_tracker_get_instance_private (tracker);
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switch (prop_id)
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{
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case PROP_BACKEND:
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g_value_set_object (value, priv->backend);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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meta_cursor_tracker_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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MetaCursorTracker *tracker = META_CURSOR_TRACKER (object);
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MetaCursorTrackerPrivate *priv =
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meta_cursor_tracker_get_instance_private (tracker);
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switch (prop_id)
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{
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case PROP_BACKEND:
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priv->backend = g_value_get_object (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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meta_cursor_tracker_dispose (GObject *object)
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{
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MetaCursorTracker *tracker = META_CURSOR_TRACKER (object);
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MetaCursorTrackerPrivate *priv =
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meta_cursor_tracker_get_instance_private (tracker);
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g_clear_object (&priv->effective_cursor);
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g_clear_object (&priv->displayed_cursor);
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g_clear_object (&priv->root_cursor);
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G_OBJECT_CLASS (meta_cursor_tracker_parent_class)->dispose (object);
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}
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static void
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meta_cursor_tracker_class_init (MetaCursorTrackerClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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object_class->get_property = meta_cursor_tracker_get_property;
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object_class->set_property = meta_cursor_tracker_set_property;
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object_class->dispose = meta_cursor_tracker_dispose;
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klass->set_force_track_position =
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meta_cursor_tracker_real_set_force_track_position;
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klass->get_sprite =
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meta_cursor_tracker_real_get_sprite;
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obj_props[PROP_BACKEND] =
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g_param_spec_object ("backend",
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"backend",
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"MetaBackend",
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META_TYPE_BACKEND,
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G_PARAM_READWRITE |
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G_PARAM_CONSTRUCT_ONLY |
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G_PARAM_STATIC_STRINGS);
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g_object_class_install_properties (object_class, N_PROPS, obj_props);
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signals[CURSOR_CHANGED] = g_signal_new ("cursor-changed",
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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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signals[POSITION_INVALIDATED] = g_signal_new ("position-invalidated",
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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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signals[VISIBILITY_CHANGED] = g_signal_new ("visibility-changed",
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G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_LAST,
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0, NULL, NULL, NULL,
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G_TYPE_NONE, 0);
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}
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/**
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* meta_cursor_tracker_get_for_display:
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* @display: the #MetaDisplay
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*
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* Retrieves the cursor tracker object for @display.
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*
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* Returns: (transfer none):
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*/
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MetaCursorTracker *
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meta_cursor_tracker_get_for_display (MetaDisplay *display)
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{
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MetaBackend *backend = meta_get_backend ();
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MetaCursorTracker *tracker = meta_backend_get_cursor_tracker (backend);
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g_assert (tracker);
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return tracker;
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}
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static void
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set_window_cursor (MetaCursorTracker *tracker,
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gboolean has_cursor,
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MetaCursorSprite *cursor_sprite)
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{
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MetaCursorTrackerPrivate *priv =
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meta_cursor_tracker_get_instance_private (tracker);
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g_clear_object (&priv->window_cursor);
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if (cursor_sprite)
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priv->window_cursor = g_object_ref (cursor_sprite);
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priv->has_window_cursor = has_cursor;
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sync_cursor (tracker);
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}
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/**
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* meta_cursor_tracker_get_sprite:
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*
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* Returns: (transfer none):
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*/
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CoglTexture *
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meta_cursor_tracker_get_sprite (MetaCursorTracker *tracker)
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{
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MetaCursorSprite *cursor_sprite;
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cursor_sprite = META_CURSOR_TRACKER_GET_CLASS (tracker)->get_sprite (tracker);
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if (!cursor_sprite)
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return NULL;
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meta_cursor_sprite_realize_texture (cursor_sprite);
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return meta_cursor_sprite_get_cogl_texture (cursor_sprite);
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}
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/**
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* meta_cursor_tracker_get_scale:
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* @tracker:
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*
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* Returns:
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*/
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float
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meta_cursor_tracker_get_scale (MetaCursorTracker *tracker)
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{
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MetaCursorSprite *cursor_sprite;
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cursor_sprite = META_CURSOR_TRACKER_GET_CLASS (tracker)->get_sprite (tracker);
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if (!cursor_sprite)
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return 1.0;
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return meta_cursor_sprite_get_texture_scale (cursor_sprite);
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}
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/**
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* meta_cursor_tracker_get_hot:
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* @tracker:
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* @x: (out):
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* @y: (out):
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*
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*/
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void
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meta_cursor_tracker_get_hot (MetaCursorTracker *tracker,
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int *x,
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int *y)
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{
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MetaCursorSprite *cursor_sprite;
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g_return_if_fail (META_IS_CURSOR_TRACKER (tracker));
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cursor_sprite = META_CURSOR_TRACKER_GET_CLASS (tracker)->get_sprite (tracker);
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if (cursor_sprite)
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meta_cursor_sprite_get_hotspot (cursor_sprite, x, y);
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else
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{
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if (x)
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*x = 0;
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if (y)
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*y = 0;
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}
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}
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void
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meta_cursor_tracker_set_window_cursor (MetaCursorTracker *tracker,
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MetaCursorSprite *cursor_sprite)
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{
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set_window_cursor (tracker, TRUE, cursor_sprite);
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}
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void
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meta_cursor_tracker_unset_window_cursor (MetaCursorTracker *tracker)
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{
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set_window_cursor (tracker, FALSE, NULL);
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}
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/**
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* meta_cursor_tracker_set_root_cursor:
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* @tracker: a #MetaCursorTracker object.
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* @cursor_sprite: (transfer none): the new root cursor
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*
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* Sets the root cursor (the cursor that is shown if not modified by a window).
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* The #MetaCursorTracker will take a strong reference to the sprite.
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*/
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void
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meta_cursor_tracker_set_root_cursor (MetaCursorTracker *tracker,
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MetaCursorSprite *cursor_sprite)
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{
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MetaCursorTrackerPrivate *priv =
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meta_cursor_tracker_get_instance_private (tracker);
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g_clear_object (&priv->root_cursor);
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if (cursor_sprite)
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priv->root_cursor = g_object_ref (cursor_sprite);
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sync_cursor (tracker);
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}
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void
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meta_cursor_tracker_invalidate_position (MetaCursorTracker *tracker)
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{
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g_signal_emit (tracker, signals[POSITION_INVALIDATED], 0);
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}
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void
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meta_cursor_tracker_get_pointer (MetaCursorTracker *tracker,
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graphene_point_t *coords,
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ClutterModifierType *mods)
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{
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ClutterSeat *seat;
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ClutterInputDevice *cdevice;
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seat = clutter_backend_get_default_seat (clutter_get_default_backend ());
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cdevice = clutter_seat_get_pointer (seat);
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clutter_seat_query_state (seat, cdevice, NULL, coords, mods);
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}
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void
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meta_cursor_tracker_track_position (MetaCursorTracker *tracker)
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{
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MetaCursorTrackerPrivate *priv =
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meta_cursor_tracker_get_instance_private (tracker);
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priv->track_position_count++;
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if (priv->track_position_count == 1)
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{
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MetaCursorTrackerClass *klass =
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META_CURSOR_TRACKER_GET_CLASS (tracker);
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klass->set_force_track_position (tracker, TRUE);
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}
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}
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void
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meta_cursor_tracker_untrack_position (MetaCursorTracker *tracker)
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{
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MetaCursorTrackerPrivate *priv =
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meta_cursor_tracker_get_instance_private (tracker);
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g_return_if_fail (priv->track_position_count > 0);
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priv->track_position_count--;
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if (priv->track_position_count == 0)
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{
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MetaCursorTrackerClass *klass =
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META_CURSOR_TRACKER_GET_CLASS (tracker);
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klass->set_force_track_position (tracker, FALSE);
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}
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}
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gboolean
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meta_cursor_tracker_get_pointer_visible (MetaCursorTracker *tracker)
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{
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MetaCursorTrackerPrivate *priv =
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meta_cursor_tracker_get_instance_private (tracker);
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return priv->is_showing;
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}
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void
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meta_cursor_tracker_set_pointer_visible (MetaCursorTracker *tracker,
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gboolean visible)
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{
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MetaCursorTrackerPrivate *priv =
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meta_cursor_tracker_get_instance_private (tracker);
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if (visible == priv->is_showing)
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return;
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priv->is_showing = visible;
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sync_cursor (tracker);
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g_signal_emit (tracker, signals[VISIBILITY_CHANGED], 0);
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}
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MetaBackend *
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meta_cursor_tracker_get_backend (MetaCursorTracker *tracker)
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{
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MetaCursorTrackerPrivate *priv =
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meta_cursor_tracker_get_instance_private (tracker);
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return priv->backend;
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}
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