/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* Copyright (C) 2014 Red Hat
*
* 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, see .
*
* Written by:
* Jasper St. Pierre
*/
#include "config.h"
#include "backends/meta-cursor-renderer.h"
#include
#include "backends/meta-backend-private.h"
#include "backends/meta-logical-monitor.h"
#include "backends/meta-stage-private.h"
#include "clutter/clutter.h"
#include "clutter/clutter-mutter.h"
#include "cogl/cogl.h"
#include "core/boxes-private.h"
#include "meta/meta-backend.h"
#include "meta/util.h"
#include "mtk/mtk.h"
G_DEFINE_INTERFACE (MetaHwCursorInhibitor, meta_hw_cursor_inhibitor,
G_TYPE_OBJECT)
enum
{
PROP_0,
PROP_BACKEND,
PROP_DEVICE,
N_PROPS
};
static GParamSpec *obj_props[N_PROPS];
struct _MetaCursorRendererPrivate
{
MetaBackend *backend;
float current_x;
float current_y;
ClutterInputDevice *device;
MetaCursorSprite *displayed_cursor;
MetaCursorSprite *overlay_cursor;
MetaOverlay *stage_overlay;
gboolean needs_overlay;
gulong after_paint_handler_id;
GList *hw_cursor_inhibitors;
};
typedef struct _MetaCursorRendererPrivate MetaCursorRendererPrivate;
enum
{
CURSOR_PAINTED,
LAST_SIGNAL
};
static guint signals[LAST_SIGNAL];
G_DEFINE_TYPE_WITH_PRIVATE (MetaCursorRenderer, meta_cursor_renderer, G_TYPE_OBJECT);
gboolean
meta_hw_cursor_inhibitor_is_cursor_inhibited (MetaHwCursorInhibitor *inhibitor)
{
MetaHwCursorInhibitorInterface *iface =
META_HW_CURSOR_INHIBITOR_GET_IFACE (inhibitor);
return iface->is_cursor_inhibited (inhibitor);
}
static void
meta_hw_cursor_inhibitor_default_init (MetaHwCursorInhibitorInterface *iface)
{
}
void
meta_cursor_renderer_emit_painted (MetaCursorRenderer *renderer,
MetaCursorSprite *cursor_sprite,
ClutterStageView *stage_view)
{
g_signal_emit (renderer, signals[CURSOR_PAINTED], 0, cursor_sprite, stage_view);
}
static void
align_cursor_position (MetaCursorRenderer *renderer,
graphene_rect_t *rect)
{
MetaCursorRendererPrivate *priv =
meta_cursor_renderer_get_instance_private (renderer);
ClutterActor *stage = meta_backend_get_stage (priv->backend);
ClutterStageView *view;
MtkRectangle view_layout;
float view_scale;
view = clutter_stage_get_view_at (CLUTTER_STAGE (stage),
priv->current_x,
priv->current_y);
if (!view)
return;
clutter_stage_view_get_layout (view, &view_layout);
view_scale = clutter_stage_view_get_scale (view);
graphene_rect_offset (rect, -view_layout.x, -view_layout.y);
rect->origin.x = floorf (rect->origin.x * view_scale) / view_scale;
rect->origin.y = floorf (rect->origin.y * view_scale) / view_scale;
graphene_rect_offset (rect, view_layout.x, view_layout.y);
}
void
meta_cursor_renderer_update_stage_overlay (MetaCursorRenderer *renderer,
MetaCursorSprite *cursor_sprite)
{
MetaCursorRendererPrivate *priv = meta_cursor_renderer_get_instance_private (renderer);
ClutterActor *stage = meta_backend_get_stage (priv->backend);
CoglTexture *texture = NULL;
graphene_rect_t rect = GRAPHENE_RECT_INIT_ZERO;
MetaMonitorTransform buffer_transform = META_MONITOR_TRANSFORM_NORMAL;
g_set_object (&priv->overlay_cursor, cursor_sprite);
if (cursor_sprite)
{
rect = meta_cursor_renderer_calculate_rect (renderer, cursor_sprite);
align_cursor_position (renderer, &rect);
}
if (!priv->stage_overlay)
priv->stage_overlay = meta_stage_create_cursor_overlay (META_STAGE (stage));
if (cursor_sprite)
{
texture = meta_cursor_sprite_get_cogl_texture (cursor_sprite);
buffer_transform =
meta_cursor_sprite_get_texture_transform (cursor_sprite);
}
meta_overlay_set_visible (priv->stage_overlay, priv->needs_overlay);
meta_stage_update_cursor_overlay (META_STAGE (stage), priv->stage_overlay,
texture, &rect, buffer_transform);
}
static void
meta_cursor_renderer_after_paint (ClutterStage *stage,
ClutterStageView *stage_view,
ClutterFrame *frame,
MetaCursorRenderer *renderer)
{
MetaCursorRendererPrivate *priv =
meta_cursor_renderer_get_instance_private (renderer);
if (priv->displayed_cursor && priv->needs_overlay)
{
graphene_rect_t rect;
MtkRectangle view_layout;
graphene_rect_t view_rect;
rect = meta_cursor_renderer_calculate_rect (renderer,
priv->displayed_cursor);
clutter_stage_view_get_layout (stage_view, &view_layout);
view_rect = mtk_rectangle_to_graphene_rect (&view_layout);
if (graphene_rect_intersection (&rect, &view_rect, NULL))
{
meta_cursor_renderer_emit_painted (renderer,
priv->displayed_cursor,
stage_view);
}
}
}
static gboolean
meta_cursor_renderer_real_update_cursor (MetaCursorRenderer *renderer,
MetaCursorSprite *cursor_sprite)
{
if (cursor_sprite)
meta_cursor_sprite_realize_texture (cursor_sprite);
return TRUE;
}
static void
meta_cursor_renderer_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
MetaCursorRenderer *renderer = META_CURSOR_RENDERER (object);
MetaCursorRendererPrivate *priv =
meta_cursor_renderer_get_instance_private (renderer);
switch (prop_id)
{
case PROP_BACKEND:
g_value_set_object (value, priv->backend);
break;
case PROP_DEVICE:
g_value_set_object (value, priv->device);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
meta_cursor_renderer_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
MetaCursorRenderer *renderer = META_CURSOR_RENDERER (object);
MetaCursorRendererPrivate *priv =
meta_cursor_renderer_get_instance_private (renderer);
switch (prop_id)
{
case PROP_BACKEND:
priv->backend = g_value_get_object (value);
break;
case PROP_DEVICE:
priv->device = g_value_get_object (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
meta_cursor_renderer_finalize (GObject *object)
{
MetaCursorRenderer *renderer = META_CURSOR_RENDERER (object);
MetaCursorRendererPrivate *priv = meta_cursor_renderer_get_instance_private (renderer);
ClutterActor *stage = meta_backend_get_stage (priv->backend);
if (priv->stage_overlay)
meta_stage_remove_cursor_overlay (META_STAGE (stage), priv->stage_overlay);
g_clear_signal_handler (&priv->after_paint_handler_id, stage);
g_clear_object (&priv->displayed_cursor);
g_clear_object (&priv->overlay_cursor);
G_OBJECT_CLASS (meta_cursor_renderer_parent_class)->finalize (object);
}
static void
meta_cursor_renderer_constructed (GObject *object)
{
MetaCursorRenderer *renderer = META_CURSOR_RENDERER (object);
MetaCursorRendererPrivate *priv =
meta_cursor_renderer_get_instance_private (renderer);
ClutterActor *stage;
stage = meta_backend_get_stage (priv->backend);
priv->after_paint_handler_id =
g_signal_connect (stage, "after-paint",
G_CALLBACK (meta_cursor_renderer_after_paint),
renderer);
G_OBJECT_CLASS (meta_cursor_renderer_parent_class)->constructed (object);
}
static void
meta_cursor_renderer_class_init (MetaCursorRendererClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->get_property = meta_cursor_renderer_get_property;
object_class->set_property = meta_cursor_renderer_set_property;
object_class->finalize = meta_cursor_renderer_finalize;
object_class->constructed = meta_cursor_renderer_constructed;
klass->update_cursor = meta_cursor_renderer_real_update_cursor;
obj_props[PROP_BACKEND] =
g_param_spec_object ("backend", NULL, NULL,
META_TYPE_BACKEND,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY |
G_PARAM_STATIC_STRINGS);
obj_props[PROP_DEVICE] =
g_param_spec_object ("device", NULL, NULL,
CLUTTER_TYPE_INPUT_DEVICE,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY |
G_PARAM_STATIC_STRINGS);
g_object_class_install_properties (object_class, N_PROPS, obj_props);
signals[CURSOR_PAINTED] = g_signal_new ("cursor-painted",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL, NULL,
G_TYPE_NONE, 2,
G_TYPE_POINTER,
CLUTTER_TYPE_STAGE_VIEW);
}
static void
meta_cursor_renderer_init (MetaCursorRenderer *renderer)
{
}
static gboolean
calculate_sprite_geometry (MetaCursorSprite *cursor_sprite,
graphene_size_t *size,
graphene_point_t *hotspot)
{
CoglTexture *texture;
int hot_x, hot_y;
int width, height;
float texture_scale;
meta_cursor_sprite_realize_texture (cursor_sprite);
texture = meta_cursor_sprite_get_cogl_texture (cursor_sprite);
if (!texture)
return FALSE;
meta_cursor_sprite_get_hotspot (cursor_sprite, &hot_x, &hot_y);
texture_scale = meta_cursor_sprite_get_texture_scale (cursor_sprite);
width = cogl_texture_get_width (texture);
height = cogl_texture_get_height (texture);
*size = (graphene_size_t) {
.width = width * texture_scale,
.height = height * texture_scale
};
*hotspot = (graphene_point_t) {
.x = hot_x * texture_scale,
.y = hot_y * texture_scale
};
return TRUE;
}
graphene_rect_t
meta_cursor_renderer_calculate_rect (MetaCursorRenderer *renderer,
MetaCursorSprite *cursor_sprite)
{
MetaCursorRendererPrivate *priv =
meta_cursor_renderer_get_instance_private (renderer);
graphene_rect_t rect = GRAPHENE_RECT_INIT_ZERO;
graphene_point_t hotspot;
if (!calculate_sprite_geometry (cursor_sprite, &rect.size, &hotspot))
return GRAPHENE_RECT_INIT_ZERO;
rect.origin = (graphene_point_t) { .x = -hotspot.x, .y = -hotspot.y };
graphene_rect_offset (&rect, priv->current_x, priv->current_y);
return rect;
}
static float
find_highest_logical_monitor_scale (MetaBackend *backend,
MetaCursorSprite *cursor_sprite)
{
MetaMonitorManager *monitor_manager =
meta_backend_get_monitor_manager (backend);
MetaCursorRenderer *cursor_renderer =
meta_backend_get_cursor_renderer (backend);
graphene_rect_t cursor_rect;
GList *logical_monitors;
GList *l;
float highest_scale = 0.0f;
cursor_rect = meta_cursor_renderer_calculate_rect (cursor_renderer,
cursor_sprite);
logical_monitors =
meta_monitor_manager_get_logical_monitors (monitor_manager);
for (l = logical_monitors; l; l = l->next)
{
MetaLogicalMonitor *logical_monitor = l->data;
graphene_rect_t logical_monitor_rect =
mtk_rectangle_to_graphene_rect (&logical_monitor->rect);
if (!graphene_rect_intersection (&cursor_rect,
&logical_monitor_rect,
NULL))
continue;
highest_scale = MAX (highest_scale, logical_monitor->scale);
}
return highest_scale;
}
static void
meta_cursor_renderer_update_cursor (MetaCursorRenderer *renderer,
MetaCursorSprite *cursor_sprite)
{
MetaCursorRendererPrivate *priv = meta_cursor_renderer_get_instance_private (renderer);
if (cursor_sprite)
{
float scale = find_highest_logical_monitor_scale (priv->backend,
cursor_sprite);
meta_cursor_sprite_prepare_at (cursor_sprite,
MAX (1, scale),
(int) priv->current_x,
(int) priv->current_y);
}
priv->needs_overlay =
META_CURSOR_RENDERER_GET_CLASS (renderer)->update_cursor (renderer,
cursor_sprite);
meta_cursor_renderer_update_stage_overlay (renderer, cursor_sprite);
}
MetaCursorRenderer *
meta_cursor_renderer_new (MetaBackend *backend,
ClutterInputDevice *device)
{
return g_object_new (META_TYPE_CURSOR_RENDERER,
"backend", backend,
"device", device,
NULL);
}
void
meta_cursor_renderer_set_cursor (MetaCursorRenderer *renderer,
MetaCursorSprite *cursor_sprite)
{
MetaCursorRendererPrivate *priv = meta_cursor_renderer_get_instance_private (renderer);
if (priv->displayed_cursor == cursor_sprite)
return;
g_set_object (&priv->displayed_cursor, cursor_sprite);
meta_cursor_renderer_update_cursor (renderer, cursor_sprite);
}
void
meta_cursor_renderer_force_update (MetaCursorRenderer *renderer)
{
MetaCursorRendererPrivate *priv =
meta_cursor_renderer_get_instance_private (renderer);
meta_cursor_renderer_update_cursor (renderer, priv->displayed_cursor);
}
void
meta_cursor_renderer_update_position (MetaCursorRenderer *renderer)
{
MetaCursorRendererPrivate *priv = meta_cursor_renderer_get_instance_private (renderer);
graphene_point_t pos;
clutter_seat_query_state (clutter_input_device_get_seat (priv->device),
priv->device, NULL, &pos, NULL);
priv->current_x = pos.x;
priv->current_y = pos.y;
meta_cursor_renderer_update_cursor (renderer, priv->displayed_cursor);
}
MetaCursorSprite *
meta_cursor_renderer_get_cursor (MetaCursorRenderer *renderer)
{
MetaCursorRendererPrivate *priv = meta_cursor_renderer_get_instance_private (renderer);
return priv->overlay_cursor;
}
ClutterInputDevice *
meta_cursor_renderer_get_input_device (MetaCursorRenderer *renderer)
{
MetaCursorRendererPrivate *priv =
meta_cursor_renderer_get_instance_private (renderer);
return priv->device;
}
MetaBackend *
meta_cursor_renderer_get_backend (MetaCursorRenderer *renderer)
{
MetaCursorRendererPrivate *priv =
meta_cursor_renderer_get_instance_private (renderer);
return priv->backend;
}