mutter/src/wayland/meta-wayland-cursor-surface.c

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/*
* Wayland Support
*
* Copyright (C) 2015 Red Hat, Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#include "config.h"
#include "wayland/meta-wayland-cursor-surface.h"
#include "backends/meta-backend-private.h"
#include "backends/meta-logical-monitor.h"
#include "cogl/cogl-wayland-server.h"
#include "cogl/cogl.h"
#include "core/boxes-private.h"
#include "wayland/meta-cursor-sprite-wayland.h"
#include "wayland/meta-wayland-buffer.h"
#include "wayland/meta-wayland-private.h"
#include "wayland/meta-xwayland.h"
typedef struct _MetaWaylandCursorSurfacePrivate MetaWaylandCursorSurfacePrivate;
struct _MetaWaylandCursorSurfacePrivate
{
int hot_x;
int hot_y;
MetaCursorSpriteWayland *cursor_sprite;
MetaCursorRenderer *cursor_renderer;
MetaWaylandBuffer *buffer;
struct wl_list frame_callbacks;
gulong cursor_painted_handler_id;
};
G_DEFINE_TYPE_WITH_PRIVATE (MetaWaylandCursorSurface,
meta_wayland_cursor_surface,
META_TYPE_WAYLAND_SURFACE_ROLE)
static void
update_cursor_sprite_texture (MetaWaylandCursorSurface *cursor_surface)
{
MetaWaylandCursorSurfacePrivate *priv =
meta_wayland_cursor_surface_get_instance_private (cursor_surface);
MetaWaylandSurface *surface =
meta_wayland_surface_role_get_surface (META_WAYLAND_SURFACE_ROLE (cursor_surface));
MetaCursorSprite *cursor_sprite = META_CURSOR_SPRITE (priv->cursor_sprite);
CoglTexture *texture;
if (!priv->cursor_renderer)
return;
texture = meta_wayland_surface_get_texture (surface);
if (texture)
{
meta_cursor_sprite_set_texture (cursor_sprite,
texture,
priv->hot_x * surface->scale,
priv->hot_y * surface->scale);
}
else
{
meta_cursor_sprite_set_texture (cursor_sprite, NULL, 0, 0);
}
meta_cursor_renderer_force_update (priv->cursor_renderer);
}
static void
cursor_sprite_prepare_at (MetaCursorSprite *cursor_sprite,
int x,
int y,
MetaWaylandCursorSurface *cursor_surface)
{
MetaWaylandSurfaceRole *role = META_WAYLAND_SURFACE_ROLE (cursor_surface);
MetaWaylandSurface *surface = meta_wayland_surface_role_get_surface (role);
if (!meta_xwayland_is_xwayland_surface (surface))
{
MetaBackend *backend = meta_get_backend ();
MetaMonitorManager *monitor_manager =
meta_backend_get_monitor_manager (backend);
MetaLogicalMonitor *logical_monitor;
logical_monitor =
meta_monitor_manager_get_logical_monitor_at (monitor_manager, x, y);
if (logical_monitor)
{
float texture_scale;
if (meta_is_stage_views_scaled ())
texture_scale = 1.0 / surface->scale;
else
texture_scale = (meta_logical_monitor_get_scale (logical_monitor) /
surface->scale);
meta_cursor_sprite_set_texture_scale (cursor_sprite, texture_scale);
}
}
meta_wayland_surface_update_outputs (surface);
}
static void
meta_wayland_cursor_surface_assigned (MetaWaylandSurfaceRole *surface_role)
{
MetaWaylandSurface *surface =
meta_wayland_surface_role_get_surface (surface_role);
MetaWaylandCursorSurface *cursor_surface =
META_WAYLAND_CURSOR_SURFACE (surface_role);
MetaWaylandCursorSurfacePrivate *priv =
meta_wayland_cursor_surface_get_instance_private (cursor_surface);
wl_list_insert_list (&priv->frame_callbacks,
&surface->pending_frame_callback_list);
wl_list_init (&surface->pending_frame_callback_list);
}
static void
meta_wayland_cursor_surface_pre_commit (MetaWaylandSurfaceRole *surface_role,
MetaWaylandPendingState *pending)
{
MetaWaylandCursorSurface *cursor_surface =
META_WAYLAND_CURSOR_SURFACE (surface_role);
MetaWaylandCursorSurfacePrivate *priv =
meta_wayland_cursor_surface_get_instance_private (cursor_surface);
MetaWaylandSurface *surface =
meta_wayland_surface_role_get_surface (surface_role);
if (pending->newly_attached && priv->buffer)
{
meta_wayland_surface_unref_buffer_use_count (surface);
g_clear_object (&priv->buffer);
}
}
static void
meta_wayland_cursor_surface_commit (MetaWaylandSurfaceRole *surface_role,
MetaWaylandPendingState *pending)
{
MetaWaylandCursorSurface *cursor_surface =
META_WAYLAND_CURSOR_SURFACE (surface_role);
MetaWaylandCursorSurfacePrivate *priv =
meta_wayland_cursor_surface_get_instance_private (cursor_surface);
MetaWaylandSurface *surface =
meta_wayland_surface_role_get_surface (surface_role);
MetaWaylandBuffer *buffer = meta_wayland_surface_get_buffer (surface);
if (pending->newly_attached)
{
g_set_object (&priv->buffer, buffer);
if (priv->buffer)
meta_wayland_surface_ref_buffer_use_count (surface);
}
wl_list_insert_list (&priv->frame_callbacks,
&pending->frame_callback_list);
wl_list_init (&pending->frame_callback_list);
if (pending->newly_attached &&
(!cairo_region_is_empty (pending->surface_damage) ||
!cairo_region_is_empty (pending->buffer_damage)))
update_cursor_sprite_texture (META_WAYLAND_CURSOR_SURFACE (surface_role));
}
static gboolean
meta_wayland_cursor_surface_is_on_logical_monitor (MetaWaylandSurfaceRole *role,
MetaLogicalMonitor *logical_monitor)
{
MetaWaylandSurface *surface =
meta_wayland_surface_role_get_surface (role);
MetaWaylandCursorSurface *cursor_surface =
META_WAYLAND_CURSOR_SURFACE (surface->role);
MetaWaylandCursorSurfacePrivate *priv =
meta_wayland_cursor_surface_get_instance_private (cursor_surface);
ClutterPoint point;
ClutterRect logical_monitor_rect;
if (!priv->cursor_renderer)
return FALSE;
logical_monitor_rect =
meta_rectangle_to_clutter_rect (&logical_monitor->rect);
point = meta_cursor_renderer_get_position (priv->cursor_renderer);
return clutter_rect_contains_point (&logical_monitor_rect, &point);
}
static void
meta_wayland_cursor_surface_dispose (GObject *object)
{
MetaWaylandCursorSurface *cursor_surface =
META_WAYLAND_CURSOR_SURFACE (object);
MetaWaylandCursorSurfacePrivate *priv =
meta_wayland_cursor_surface_get_instance_private (cursor_surface);
MetaWaylandSurface *surface =
meta_wayland_surface_role_get_surface (META_WAYLAND_SURFACE_ROLE (object));
MetaWaylandFrameCallback *cb, *next;
wl_list_for_each_safe (cb, next, &priv->frame_callbacks, link)
wl_resource_destroy (cb->resource);
g_signal_handlers_disconnect_by_func (priv->cursor_sprite,
cursor_sprite_prepare_at, cursor_surface);
g_clear_object (&priv->cursor_renderer);
g_clear_object (&priv->cursor_sprite);
if (priv->buffer)
{
meta_wayland_surface_unref_buffer_use_count (surface);
g_clear_object (&priv->buffer);
}
G_OBJECT_CLASS (meta_wayland_cursor_surface_parent_class)->dispose (object);
}
static void
meta_wayland_cursor_surface_constructed (GObject *object)
{
MetaWaylandCursorSurface *cursor_surface =
META_WAYLAND_CURSOR_SURFACE (object);
MetaWaylandCursorSurfacePrivate *priv =
meta_wayland_cursor_surface_get_instance_private (cursor_surface);
MetaWaylandSurfaceRole *surface_role =
META_WAYLAND_SURFACE_ROLE (cursor_surface);
MetaWaylandSurface *surface =
meta_wayland_surface_role_get_surface (surface_role);
MetaWaylandBuffer *buffer;
buffer = meta_wayland_surface_get_buffer (surface);
g_warn_if_fail (!buffer || buffer->resource);
if (buffer && buffer->resource)
{
g_set_object (&priv->buffer, buffer);
meta_wayland_surface_ref_buffer_use_count (surface);
}
priv->cursor_sprite = meta_cursor_sprite_wayland_new (surface);
g_signal_connect_object (priv->cursor_sprite,
"prepare-at",
G_CALLBACK (cursor_sprite_prepare_at),
cursor_surface,
0);
}
static void
meta_wayland_cursor_surface_init (MetaWaylandCursorSurface *role)
{
MetaWaylandCursorSurfacePrivate *priv =
meta_wayland_cursor_surface_get_instance_private (role);
wl_list_init (&priv->frame_callbacks);
}
static void
meta_wayland_cursor_surface_class_init (MetaWaylandCursorSurfaceClass *klass)
{
MetaWaylandSurfaceRoleClass *surface_role_class =
META_WAYLAND_SURFACE_ROLE_CLASS (klass);
GObjectClass *object_class = G_OBJECT_CLASS (klass);
surface_role_class->assigned = meta_wayland_cursor_surface_assigned;
surface_role_class->pre_commit = meta_wayland_cursor_surface_pre_commit;
surface_role_class->commit = meta_wayland_cursor_surface_commit;
surface_role_class->is_on_logical_monitor =
meta_wayland_cursor_surface_is_on_logical_monitor;
object_class->constructed = meta_wayland_cursor_surface_constructed;
object_class->dispose = meta_wayland_cursor_surface_dispose;
}
MetaCursorSprite *
meta_wayland_cursor_surface_get_sprite (MetaWaylandCursorSurface *cursor_surface)
{
MetaWaylandCursorSurfacePrivate *priv =
meta_wayland_cursor_surface_get_instance_private (cursor_surface);
return META_CURSOR_SPRITE (priv->cursor_sprite);
}
void
meta_wayland_cursor_surface_set_hotspot (MetaWaylandCursorSurface *cursor_surface,
int hotspot_x,
int hotspot_y)
{
MetaWaylandCursorSurfacePrivate *priv =
meta_wayland_cursor_surface_get_instance_private (cursor_surface);
if (priv->hot_x == hotspot_x &&
priv->hot_y == hotspot_y)
return;
priv->hot_x = hotspot_x;
priv->hot_y = hotspot_y;
update_cursor_sprite_texture (cursor_surface);
}
void
meta_wayland_cursor_surface_get_hotspot (MetaWaylandCursorSurface *cursor_surface,
int *hotspot_x,
int *hotspot_y)
{
MetaWaylandCursorSurfacePrivate *priv =
meta_wayland_cursor_surface_get_instance_private (cursor_surface);
if (hotspot_x)
*hotspot_x = priv->hot_x;
if (hotspot_y)
*hotspot_y = priv->hot_y;
}
static void
on_cursor_painted (MetaCursorRenderer *renderer,
MetaCursorSprite *displayed_sprite,
MetaWaylandCursorSurface *cursor_surface)
{
MetaWaylandCursorSurfacePrivate *priv =
meta_wayland_cursor_surface_get_instance_private (cursor_surface);
guint32 time = (guint32) (g_get_monotonic_time () / 1000);
if (displayed_sprite != META_CURSOR_SPRITE (priv->cursor_sprite))
return;
while (!wl_list_empty (&priv->frame_callbacks))
{
MetaWaylandFrameCallback *callback =
wl_container_of (priv->frame_callbacks.next, callback, link);
wl_callback_send_done (callback->resource, time);
wl_resource_destroy (callback->resource);
}
}
void
meta_wayland_cursor_surface_set_renderer (MetaWaylandCursorSurface *cursor_surface,
MetaCursorRenderer *renderer)
{
MetaWaylandCursorSurfacePrivate *priv =
meta_wayland_cursor_surface_get_instance_private (cursor_surface);
if (priv->cursor_renderer == renderer)
return;
if (priv->cursor_renderer)
{
g_signal_handler_disconnect (priv->cursor_renderer,
priv->cursor_painted_handler_id);
priv->cursor_painted_handler_id = 0;
g_object_unref (priv->cursor_renderer);
}
if (renderer)
{
priv->cursor_painted_handler_id =
g_signal_connect_object (renderer, "cursor-painted",
G_CALLBACK (on_cursor_painted), cursor_surface, 0);
g_object_ref (renderer);
}
priv->cursor_renderer = renderer;
update_cursor_sprite_texture (cursor_surface);
}
MetaCursorRenderer *
meta_wayland_cursor_surface_get_renderer (MetaWaylandCursorSurface *cursor_surface)
{
MetaWaylandCursorSurfacePrivate *priv =
meta_wayland_cursor_surface_get_instance_private (cursor_surface);
return priv->cursor_renderer;
}