mirror of
https://github.com/brl/mutter.git
synced 2025-08-13 11:54:48 +00:00
2f4a68c8c3
The order and way include macros were structured was chaotic, with no real common thread between files. Try to tidy up the mess with some common scheme, to make things look less messy.
412 lines
11 KiB
C
412 lines
11 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 <gdk/gdk.h>
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#include <gdk/gdkx.h>
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#include <string.h>
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#include "backends/meta-backend-private.h"
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#include "backends/x11/cm/meta-cursor-sprite-xfixes.h"
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#include "cogl/cogl.h"
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#include "clutter/clutter.h"
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#include "meta/main.h"
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#include "meta/meta-x11-errors.h"
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#include "meta/util.h"
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#include "x11/meta-x11-display-private.h"
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G_DEFINE_TYPE (MetaCursorTracker, meta_cursor_tracker, G_TYPE_OBJECT);
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enum {
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CURSOR_CHANGED,
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LAST_SIGNAL
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};
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static guint signals[LAST_SIGNAL];
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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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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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tracker->has_window_cursor)
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cursor = tracker->window_cursor;
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else
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cursor = tracker->root_cursor;
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if (tracker->displayed_cursor == cursor)
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return FALSE;
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if (tracker->displayed_cursor)
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{
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g_signal_handlers_disconnect_by_func (tracker->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 (&tracker->displayed_cursor, cursor);
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if (cursor)
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{
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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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MetaCursorSprite *cursor = NULL;
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if (tracker->is_showing)
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cursor = tracker->displayed_cursor;
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return g_set_object (&tracker->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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MetaBackend *backend = meta_get_backend ();
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MetaCursorRenderer *cursor_renderer =
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meta_backend_get_cursor_renderer (backend);
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meta_cursor_renderer_set_cursor (cursor_renderer, tracker->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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if (update_displayed_cursor (tracker))
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g_signal_emit (tracker, signals[CURSOR_CHANGED], 0);
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if (update_effective_cursor (tracker))
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change_cursor_renderer (tracker);
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}
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static void
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meta_cursor_tracker_init (MetaCursorTracker *self)
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{
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self->is_showing = TRUE;
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}
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static void
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meta_cursor_tracker_finalize (GObject *object)
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{
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MetaCursorTracker *self = META_CURSOR_TRACKER (object);
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if (self->effective_cursor)
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g_object_unref (self->effective_cursor);
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if (self->displayed_cursor)
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g_object_unref (self->displayed_cursor);
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if (self->root_cursor)
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g_object_unref (self->root_cursor);
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G_OBJECT_CLASS (meta_cursor_tracker_parent_class)->finalize (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->finalize = meta_cursor_tracker_finalize;
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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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}
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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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g_clear_object (&tracker->window_cursor);
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if (cursor_sprite)
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tracker->window_cursor = g_object_ref (cursor_sprite);
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tracker->has_window_cursor = has_cursor;
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sync_cursor (tracker);
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}
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gboolean
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meta_cursor_tracker_handle_xevent (MetaCursorTracker *tracker,
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XEvent *xevent)
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{
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MetaX11Display *x11_display = meta_get_display ()->x11_display;
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XFixesCursorNotifyEvent *notify_event;
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if (meta_is_wayland_compositor ())
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return FALSE;
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if (xevent->xany.type != x11_display->xfixes_event_base + XFixesCursorNotify)
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return FALSE;
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notify_event = (XFixesCursorNotifyEvent *)xevent;
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if (notify_event->subtype != XFixesDisplayCursorNotify)
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return FALSE;
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g_clear_object (&tracker->xfixes_cursor);
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g_signal_emit (tracker, signals[CURSOR_CHANGED], 0);
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return TRUE;
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}
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static void
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ensure_xfixes_cursor (MetaCursorTracker *tracker)
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{
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MetaDisplay *display = meta_get_display ();
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g_autoptr (GError) error = NULL;
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if (tracker->xfixes_cursor)
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return;
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tracker->xfixes_cursor = meta_cursor_sprite_xfixes_new (display, &error);
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if (!tracker->xfixes_cursor)
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g_warning ("Failed to create XFIXES cursor: %s", error->message);
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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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g_return_val_if_fail (META_IS_CURSOR_TRACKER (tracker), NULL);
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if (meta_is_wayland_compositor ())
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{
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cursor_sprite = tracker->displayed_cursor;
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}
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else
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{
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ensure_xfixes_cursor (tracker);
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cursor_sprite = META_CURSOR_SPRITE (tracker->xfixes_cursor);
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}
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if (cursor_sprite)
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{
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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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else
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{
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return NULL;
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}
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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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if (meta_is_wayland_compositor ())
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{
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cursor_sprite = tracker->displayed_cursor;
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}
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else
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{
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ensure_xfixes_cursor (tracker);
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cursor_sprite = META_CURSOR_SPRITE (tracker->xfixes_cursor);
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}
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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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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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g_clear_object (&tracker->root_cursor);
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if (cursor_sprite)
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tracker->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_update_position (MetaCursorTracker *tracker,
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float new_x,
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float new_y)
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{
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MetaBackend *backend = meta_get_backend ();
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MetaCursorRenderer *cursor_renderer =
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meta_backend_get_cursor_renderer (backend);
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g_assert (meta_is_wayland_compositor ());
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meta_cursor_renderer_set_position (cursor_renderer, new_x, new_y);
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}
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static void
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get_pointer_position_gdk (int *x,
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int *y,
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int *mods)
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{
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GdkSeat *gseat;
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GdkDevice *gdevice;
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GdkScreen *gscreen;
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gseat = gdk_display_get_default_seat (gdk_display_get_default ());
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gdevice = gdk_seat_get_pointer (gseat);
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gdk_device_get_position (gdevice, &gscreen, x, y);
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if (mods)
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gdk_device_get_state (gdevice,
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gdk_screen_get_root_window (gscreen),
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NULL, (GdkModifierType*)mods);
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}
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static void
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get_pointer_position_clutter (int *x,
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int *y,
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int *mods)
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{
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ClutterDeviceManager *cmanager;
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ClutterInputDevice *cdevice;
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ClutterPoint point;
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cmanager = clutter_device_manager_get_default ();
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cdevice = clutter_device_manager_get_core_device (cmanager, CLUTTER_POINTER_DEVICE);
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clutter_input_device_get_coords (cdevice, NULL, &point);
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if (x)
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*x = point.x;
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if (y)
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*y = point.y;
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if (mods)
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*mods = clutter_input_device_get_modifier_state (cdevice);
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}
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void
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meta_cursor_tracker_get_pointer (MetaCursorTracker *tracker,
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int *x,
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int *y,
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ClutterModifierType *mods)
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{
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/* We can't use the clutter interface when not running as a wayland compositor,
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because we need to query the server, rather than using the last cached value.
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OTOH, on wayland we can't use GDK, because that only sees the events
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we forward to xwayland.
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*/
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if (meta_is_wayland_compositor ())
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get_pointer_position_clutter (x, y, (int*)mods);
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else
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get_pointer_position_gdk (x, y, (int*)mods);
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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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if (visible == tracker->is_showing)
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return;
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tracker->is_showing = visible;
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sync_cursor (tracker);
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}
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MetaCursorSprite *
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meta_cursor_tracker_get_displayed_cursor (MetaCursorTracker *tracker)
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{
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return tracker->displayed_cursor;
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}
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