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51fca9d968
This adds two internal functions relating to explicit traversal of the scenegraph: _clutter_actor_foreach_child _clutter_actor_traverse _clutter_actor_foreach_child just iterates the immediate children of an actor, and with a new ClutterForeachCallback type it allows the callbacks to break iteration early. _clutter_actor_traverse traverses the given actor and all of its decendants. Again traversal can be stopped early if a callback returns FALSE. The first intended use for _clutter_actor_traverse is to maintain a cache pointer to the stage for all actors. In this case we will need to update the pointer for all descendants of an actor when an actor is reparented in any way.
589 lines
25 KiB
C
589 lines
25 KiB
C
/*
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* Clutter.
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*
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* An OpenGL based 'interactive canvas' library.
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*
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* Authored By Matthew Allum <mallum@openedhand.com>
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*
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* Copyright (C) 2006 OpenedHand
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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*
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*/
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#ifndef __CLUTTER_PRIVATE_H__
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#define __CLUTTER_PRIVATE_H__
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <math.h>
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#include <glib.h>
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#include <glib/gi18n-lib.h>
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#include "pango/cogl-pango.h"
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#include "clutter-backend.h"
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#include "clutter-device-manager.h"
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#include "clutter-effect.h"
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#include "clutter-event.h"
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#include "clutter-feature.h"
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#include "clutter-id-pool.h"
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#include "clutter-layout-manager.h"
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#include "clutter-master-clock.h"
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#include "clutter-settings.h"
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#include "clutter-stage-manager.h"
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#include "clutter-stage-window.h"
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#include "clutter-stage.h"
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#include "clutter-timeline.h"
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G_BEGIN_DECLS
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typedef struct _ClutterMainContext ClutterMainContext;
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#define CLUTTER_PRIVATE_FLAGS(a) (((ClutterActor *) (a))->private_flags)
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#define CLUTTER_SET_PRIVATE_FLAGS(a,f) (CLUTTER_PRIVATE_FLAGS (a) |= (f))
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#define CLUTTER_UNSET_PRIVATE_FLAGS(a,f) (CLUTTER_PRIVATE_FLAGS (a) &= ~(f))
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#define CLUTTER_ACTOR_IS_TOPLEVEL(a) ((CLUTTER_PRIVATE_FLAGS (a) & CLUTTER_IS_TOPLEVEL) != FALSE)
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#define CLUTTER_ACTOR_IS_INTERNAL_CHILD(a) ((CLUTTER_PRIVATE_FLAGS (a) & CLUTTER_INTERNAL_CHILD) != FALSE)
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#define CLUTTER_ACTOR_IN_DESTRUCTION(a) ((CLUTTER_PRIVATE_FLAGS (a) & CLUTTER_IN_DESTRUCTION) != FALSE)
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#define CLUTTER_ACTOR_IN_REPARENT(a) ((CLUTTER_PRIVATE_FLAGS (a) & CLUTTER_IN_REPARENT) != FALSE)
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#define CLUTTER_ACTOR_IN_PAINT(a) ((CLUTTER_PRIVATE_FLAGS (a) & CLUTTER_IN_PAINT) != FALSE)
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#define CLUTTER_ACTOR_IN_RELAYOUT(a) ((CLUTTER_PRIVATE_FLAGS (a) & CLUTTER_IN_RELAYOUT) != FALSE)
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#define CLUTTER_STAGE_IN_RESIZE(a) ((CLUTTER_PRIVATE_FLAGS (a) & CLUTTER_IN_RESIZE) != FALSE)
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typedef enum {
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CLUTTER_ACTOR_UNUSED_FLAG = 0,
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CLUTTER_IN_DESTRUCTION = 1 << 0,
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CLUTTER_IS_TOPLEVEL = 1 << 1,
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CLUTTER_IN_REPARENT = 1 << 2,
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/* Used to avoid recursion */
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CLUTTER_IN_PAINT = 1 << 3,
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/* Used to avoid recursion */
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CLUTTER_IN_RELAYOUT = 1 << 4,
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/* Used by the stage if resizing is an asynchronous operation (like on
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* X11) to delay queueing relayouts until we got a notification from the
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* event handling
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*/
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CLUTTER_IN_RESIZE = 1 << 5,
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/* a flag for internal children of Containers */
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CLUTTER_INTERNAL_CHILD = 1 << 6
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} ClutterPrivateFlags;
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/*
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* ClutterRedrawFlags:
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* @CLUTTER_REDRAW_CLIPPED_TO_ALLOCATION: Tells clutter the maximum
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* extents of what needs to be redrawn lies within the actors
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* current allocation. (Only use this for 2D actors though because
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* any actor with depth may be projected outside of its allocation)
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*
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* Flags passed to the clutter_actor_queue_redraw_with_clip ()
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* function
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*
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* Since: 1.6
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*/
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typedef enum
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{
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CLUTTER_REDRAW_CLIPPED_TO_ALLOCATION = 1 << 0
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} ClutterRedrawFlags;
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struct _ClutterInputDevice
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{
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GObject parent_instance;
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gint id;
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ClutterInputDeviceType device_type;
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gchar *device_name;
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/* the actor underneath the pointer */
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ClutterActor *cursor_actor;
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/* the actor that has a grab in place for the device */
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ClutterActor *pointer_grab_actor;
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/* the current click count */
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gint click_count;
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/* the stage the device is on */
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ClutterStage *stage;
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/* the current state */
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gint current_x;
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gint current_y;
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guint32 current_time;
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gint current_button_number;
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ClutterModifierType current_state;
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/* the previous state, used for click count generation */
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gint previous_x;
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gint previous_y;
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guint32 previous_time;
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gint previous_button_number;
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ClutterModifierType previous_state;
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};
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struct _ClutterStageManager
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{
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GObject parent_instance;
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GSList *stages;
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};
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struct _ClutterMainContext
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{
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ClutterBackend *backend; /* holds a pointer to the windowing
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system backend */
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GQueue *events_queue; /* the main event queue */
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guint is_initialized : 1;
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guint motion_events_per_actor : 1;/* set for enter/leave events */
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guint defer_display_setup : 1;
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guint options_parsed : 1;
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GTimer *timer; /* Used for debugging scheduler */
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ClutterPickMode pick_mode; /* Indicates pick render mode */
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gint num_reactives; /* Num of reactive actors */
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ClutterIDPool *id_pool; /* mapping between reused integer ids
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* and actors
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*/
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guint frame_rate; /* Default FPS */
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ClutterActor *pointer_grab_actor; /* The actor having the pointer grab
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* (or NULL if there is no pointer grab
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*/
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ClutterActor *keyboard_grab_actor; /* The actor having the pointer grab
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* (or NULL if there is no pointer
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* grab)
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*/
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GSList *shaders; /* stack of overridden shaders */
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ClutterActor *motion_last_actor;
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/* fb bit masks for col<->id mapping in picking */
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gint fb_r_mask, fb_g_mask, fb_b_mask;
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gint fb_r_mask_used, fb_g_mask_used, fb_b_mask_used;
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PangoContext *pango_context; /* Global Pango context */
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CoglPangoFontMap *font_map; /* Global font map */
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ClutterEvent *current_event;
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guint32 last_event_time;
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gulong redraw_count;
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GList *repaint_funcs;
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ClutterSettings *settings;
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};
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struct _ClutterPaintVolume
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{
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ClutterActor *actor;
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/* cuboid for the volume:
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*
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* 4━━━━━━━┓5
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* ┏━━━━━━━━┓╱┃
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* ┃0 ┊7 1┃ ┃
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* ┃ ┄┄┄┄┄┃┄┃6
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* ┃3 2┃╱
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* ┗━━━━━━━━┛
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*
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* 0: top, left (origin) : always valid
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* 1: top, right : always valid
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* 2: bottom, right : updated lazily
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* 3: bottom, left : always valid
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*
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* 4: top, left, back : always valid
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* 5: top, right, back : updated lazily
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* 6: bottom, right, back : updated lazily
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* 7: bottom, left, back : updated lazily
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*
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* Elements 0, 1, 3 and 4 are filled in by the PaintVolume setters
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*
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* Note: the reason for this ordering is that we can simply ignore
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* elements 4, 5, 6 and 7 most of the time for 2D actors when
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* calculating the projected paint box.
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*/
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ClutterVertex vertices[8];
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/* As an optimization for internally managed PaintVolumes we allow
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* initializing ClutterPaintVolume variables allocated on the stack
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* so we can avoid hammering the slice allocator. */
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guint is_static:1;
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/* A newly initialized PaintVolume is considered empty as it is
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* degenerate on all three axis.
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*
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* We consider this carefully when we union an empty volume with
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* another so that the union simply results in a copy of the other
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* volume instead of also bounding the origin of the empty volume.
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*
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* For example this is a convenient property when calculating the
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* volume of a container as the union of the volume of its children
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* where the initial volume passed to the containers
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* ->get_paint_volume method will be empty. */
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guint is_empty:1;
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/* TRUE when we've updated the values we calculate lazily */
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guint is_complete:1;
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/* TRUE if vertices 4-7 can be ignored. (Only valid if complete is
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* TRUE) */
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guint is_2d:1;
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/* Set to TRUE initialy but cleared if the paint volume is
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* transfomed by a matrix. */
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guint is_axis_aligned:1;
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/* Note: There is a precedence to the above bitfields that should be
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* considered whenever we implement code that manipulates
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* PaintVolumes...
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*
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* Firstly if ->is_empty == TRUE then the values for ->is_complete
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* and ->is_2d are undefined, so you should typically check
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* ->is_empty as the first priority.
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*
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* XXX: document other invariables...
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*/
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};
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/* ClutterActorTraverseFlags:
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*
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* Controls some options for how clutter_actor_traverse() iterates
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* through the graph.
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*/
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typedef enum _ClutterActorTraverseFlags
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{
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CLUTTER_ACTOR_TRAVERSE_PLACE_HOLDER = 1L<<0
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} ClutterActorTraverseFlags;
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/* ClutterForeachCallback:
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* @actor: The actor being iterated
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* @user_data: The private data specified when starting the iteration
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*
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* A generic callback for iterating over actor, such as with
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* _clutter_actor_foreach_child. The difference when compared to
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* #ClutterCallback is that it returns a boolean so it is possible to break
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* out of an iteration early.
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*
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* Return value: %TRUE to continue iterating or %FALSE to break iteration
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* early.
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*/
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typedef gboolean (*ClutterForeachCallback) (ClutterActor *actor,
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void *user_data);
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typedef struct _ClutterStageQueueRedrawEntry ClutterStageQueueRedrawEntry;
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#define CLUTTER_CONTEXT() (_clutter_context_get_default ())
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ClutterMainContext *_clutter_context_get_default (void);
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gboolean _clutter_context_is_initialized (void);
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PangoContext *_clutter_context_create_pango_context (ClutterMainContext *self);
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PangoContext *_clutter_context_get_pango_context (ClutterMainContext *self);
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#define CLUTTER_PARAM_READABLE \
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G_PARAM_READABLE | G_PARAM_STATIC_NAME | G_PARAM_STATIC_NICK | G_PARAM_STATIC_BLURB
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#define CLUTTER_PARAM_WRITABLE \
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G_PARAM_WRITABLE | G_PARAM_STATIC_NAME | G_PARAM_STATIC_NICK | G_PARAM_STATIC_BLURB
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#define CLUTTER_PARAM_READWRITE \
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G_PARAM_READABLE | G_PARAM_WRITABLE | G_PARAM_STATIC_NAME | G_PARAM_STATIC_NICK |G_PARAM_STATIC_BLURB
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#define I_(str) (g_intern_static_string ((str)))
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/* mark all properties under the "Property" context */
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#ifdef ENABLE_NLS
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#define P_(String) (_clutter_gettext ((String)))
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#else
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#define P_(String) (String)
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#endif
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G_CONST_RETURN gchar *_clutter_gettext (const gchar *str);
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/* device manager */
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void _clutter_device_manager_add_device (ClutterDeviceManager *device_manager,
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ClutterInputDevice *device);
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void _clutter_device_manager_remove_device (ClutterDeviceManager *device_manager,
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ClutterInputDevice *device);
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void _clutter_device_manager_update_devices (ClutterDeviceManager *device_manager);
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/* input device */
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void _clutter_input_device_set_coords (ClutterInputDevice *device,
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gint x,
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gint y);
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void _clutter_input_device_set_state (ClutterInputDevice *device,
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ClutterModifierType state);
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void _clutter_input_device_set_time (ClutterInputDevice *device,
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guint32 time_);
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void _clutter_input_device_set_stage (ClutterInputDevice *device,
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ClutterStage *stage);
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void _clutter_input_device_set_actor (ClutterInputDevice *device,
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ClutterActor *actor);
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ClutterActor *_clutter_input_device_update (ClutterInputDevice *device);
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/* stage manager */
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void _clutter_stage_manager_add_stage (ClutterStageManager *stage_manager,
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ClutterStage *stage);
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void _clutter_stage_manager_remove_stage (ClutterStageManager *stage_manager,
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ClutterStage *stage);
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void _clutter_stage_manager_set_default_stage (ClutterStageManager *stage_manager,
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ClutterStage *stage);
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/* stage */
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void _clutter_stage_do_paint (ClutterStage *stage,
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const ClutterGeometry *clip);
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void _clutter_stage_set_window (ClutterStage *stage,
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ClutterStageWindow *stage_window);
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ClutterStageWindow *_clutter_stage_get_window (ClutterStage *stage);
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ClutterStageWindow *_clutter_stage_get_default_window (void);
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void _clutter_stage_get_projection_matrix (ClutterStage *stage,
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CoglMatrix *projection);
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void _clutter_stage_dirty_projection (ClutterStage *stage);
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void _clutter_stage_set_viewport (ClutterStage *stage,
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int x,
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int y,
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int width,
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int height);
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void _clutter_stage_get_viewport (ClutterStage *stage,
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int *x,
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int *y,
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int *width,
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int *height);
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void _clutter_stage_dirty_viewport (ClutterStage *stage);
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void _clutter_stage_maybe_setup_viewport (ClutterStage *stage);
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void _clutter_stage_maybe_relayout (ClutterActor *stage);
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gboolean _clutter_stage_needs_update (ClutterStage *stage);
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gboolean _clutter_stage_do_update (ClutterStage *stage);
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void _clutter_stage_queue_event (ClutterStage *stage,
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ClutterEvent *event);
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gboolean _clutter_stage_has_queued_events (ClutterStage *stage);
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void _clutter_stage_process_queued_events (ClutterStage *stage);
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void _clutter_stage_update_input_devices (ClutterStage *stage);
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int _clutter_stage_get_pending_swaps (ClutterStage *stage);
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gboolean _clutter_stage_has_full_redraw_queued (ClutterStage *stage);
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void _clutter_stage_set_pick_buffer_valid (ClutterStage *stage,
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gboolean valid);
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gboolean _clutter_stage_get_pick_buffer_valid (ClutterStage *stage);
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void _clutter_stage_increment_picks_per_frame_counter (ClutterStage *stage);
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void _clutter_stage_reset_picks_per_frame_counter (ClutterStage *stage);
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guint _clutter_stage_get_picks_per_frame_counter (ClutterStage *stage);
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ClutterPaintVolume *_clutter_stage_paint_volume_stack_allocate (ClutterStage *stage);
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void _clutter_stage_paint_volume_stack_free_all (ClutterStage *stage);
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const ClutterGeometry *_clutter_stage_get_clip (ClutterStage *stage);
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ClutterStageQueueRedrawEntry *_clutter_stage_queue_actor_redraw (ClutterStage *stage,
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ClutterStageQueueRedrawEntry *entry,
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ClutterActor *actor,
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ClutterPaintVolume *clip);
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void _clutter_stage_queue_redraw_entry_invalidate (ClutterStageQueueRedrawEntry *entry);
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/* vfuncs implemented by backend */
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GType _clutter_backend_impl_get_type (void);
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void _clutter_backend_redraw (ClutterBackend *backend,
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ClutterStage *stage);
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ClutterStageWindow *_clutter_backend_create_stage (ClutterBackend *backend,
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ClutterStage *wrapper,
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GError **error);
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void _clutter_backend_ensure_context (ClutterBackend *backend,
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ClutterStage *stage);
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void _clutter_backend_ensure_context_internal
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(ClutterBackend *backend,
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ClutterStage *stage);
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gboolean _clutter_backend_create_context (ClutterBackend *backend,
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GError **error);
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void _clutter_backend_add_options (ClutterBackend *backend,
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GOptionGroup *group);
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gboolean _clutter_backend_pre_parse (ClutterBackend *backend,
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GError **error);
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gboolean _clutter_backend_post_parse (ClutterBackend *backend,
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GError **error);
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void _clutter_backend_init_events (ClutterBackend *backend);
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void _clutter_backend_copy_event_data (ClutterBackend *backend,
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const ClutterEvent *src,
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ClutterEvent *dest);
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void _clutter_backend_free_event_data (ClutterBackend *backend,
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ClutterEvent *event);
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ClutterFeatureFlags _clutter_backend_get_features (ClutterBackend *backend);
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gfloat _clutter_backend_get_units_per_em (ClutterBackend *backend,
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PangoFontDescription *font_desc);
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gboolean _clutter_feature_init (GError **error);
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/* Reinjecting queued events for processing */
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void _clutter_process_event (ClutterEvent *event);
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/* Picking code */
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ClutterActor *_clutter_do_pick (ClutterStage *stage,
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gint x,
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gint y,
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ClutterPickMode mode);
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/* the actual redraw */
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void _clutter_do_redraw (ClutterStage *stage);
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guint _clutter_pixel_to_id (guchar pixel[4]);
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void _clutter_id_to_color (guint id, ClutterColor *col);
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||
/* use this function as the accumulator if you have a signal with
|
||
* a G_TYPE_BOOLEAN return value; this will stop the emission as
|
||
* soon as one handler returns TRUE
|
||
*/
|
||
gboolean _clutter_boolean_handled_accumulator (GSignalInvocationHint *ihint,
|
||
GValue *return_accu,
|
||
const GValue *handler_return,
|
||
gpointer dummy);
|
||
|
||
gint _clutter_actor_get_n_children (ClutterActor *self);
|
||
gboolean _clutter_actor_foreach_child (ClutterActor *self,
|
||
ClutterForeachCallback callback,
|
||
void *user_data);
|
||
gboolean _clutter_actor_traverse (ClutterActor *actor,
|
||
ClutterActorTraverseFlags flags,
|
||
ClutterForeachCallback callback,
|
||
void *user_data);
|
||
ClutterActor *_clutter_actor_get_stage_internal (ClutterActor *actor);
|
||
|
||
void _clutter_actor_apply_modelview_transform (ClutterActor *self,
|
||
CoglMatrix *matrix);
|
||
void _clutter_actor_apply_modelview_transform_recursive (ClutterActor *self,
|
||
ClutterActor *ancestor,
|
||
CoglMatrix *matrix);
|
||
|
||
void _clutter_actor_rerealize (ClutterActor *self,
|
||
ClutterCallback callback,
|
||
void *data);
|
||
|
||
void _clutter_actor_set_opacity_parent (ClutterActor *self,
|
||
ClutterActor *parent);
|
||
|
||
void _clutter_actor_set_enable_model_view_transform (ClutterActor *self,
|
||
gboolean enable);
|
||
|
||
void _clutter_actor_set_enable_paint_unmapped (ClutterActor *self,
|
||
gboolean enable);
|
||
|
||
void _clutter_actor_set_has_pointer (ClutterActor *self,
|
||
gboolean has_pointer);
|
||
|
||
void _clutter_actor_queue_redraw_with_clip (ClutterActor *self,
|
||
ClutterRedrawFlags flags,
|
||
ClutterPaintVolume *clip_volume);
|
||
const ClutterPaintVolume *_clutter_actor_get_queue_redraw_clip (ClutterActor *self);
|
||
void _clutter_actor_set_queue_redraw_clip (ClutterActor *self,
|
||
const ClutterPaintVolume *clip_volume);
|
||
void _clutter_actor_finish_queue_redraw (ClutterActor *self,
|
||
ClutterPaintVolume *clip);
|
||
|
||
void _clutter_run_repaint_functions (void);
|
||
|
||
gint32 _clutter_backend_get_units_serial (ClutterBackend *backend);
|
||
|
||
gboolean _clutter_effect_pre_paint (ClutterEffect *effect);
|
||
void _clutter_effect_post_paint (ClutterEffect *effect);
|
||
gboolean _clutter_effect_get_paint_volume (ClutterEffect *effect,
|
||
ClutterPaintVolume *volume);
|
||
|
||
void _clutter_constraint_update_allocation (ClutterConstraint *constraint,
|
||
ClutterActor *actor,
|
||
ClutterActorBox *allocation);
|
||
|
||
GType _clutter_layout_manager_get_child_meta_type (ClutterLayoutManager *manager);
|
||
|
||
void _clutter_event_set_platform_data (ClutterEvent *event,
|
||
gpointer data);
|
||
gpointer _clutter_event_get_platform_data (const ClutterEvent *event);
|
||
|
||
#if GLIB_CHECK_VERSION (2, 25, 9)
|
||
|
||
#define _clutter_notify_by_pspec(obj, pspec) \
|
||
g_object_notify_by_pspec ((obj), (pspec))
|
||
|
||
#else
|
||
|
||
#define _clutter_notify_by_pspec(obj, pspec) \
|
||
g_object_notify ((obj), (pspec)->name)
|
||
|
||
#endif
|
||
|
||
void _clutter_paint_volume_init_static (ClutterActor *actor,
|
||
ClutterPaintVolume *pv);
|
||
ClutterPaintVolume *_clutter_paint_volume_new (ClutterActor *actor);
|
||
void _clutter_paint_volume_copy_static (const ClutterPaintVolume *src_pv,
|
||
ClutterPaintVolume *dst_pv);
|
||
void _clutter_paint_volume_set_from_volume (ClutterPaintVolume *pv,
|
||
const ClutterPaintVolume *src);
|
||
|
||
void _clutter_paint_volume_complete (ClutterPaintVolume *pv);
|
||
void _clutter_paint_volume_transform (ClutterPaintVolume *pv,
|
||
const CoglMatrix *matrix);
|
||
void _clutter_paint_volume_project (ClutterPaintVolume *pv,
|
||
const CoglMatrix *modelview,
|
||
const CoglMatrix *projection,
|
||
const int *viewport);
|
||
void _clutter_paint_volume_get_bounding_box (ClutterPaintVolume *pv,
|
||
ClutterActorBox *box);
|
||
void _clutter_paint_volume_axis_align (ClutterPaintVolume *pv);
|
||
void _clutter_paint_volume_set_reference_actor (ClutterPaintVolume *pv,
|
||
ClutterActor *actor);
|
||
|
||
|
||
|
||
void _clutter_util_fully_transform_vertices (const CoglMatrix *modelview,
|
||
const CoglMatrix *projection,
|
||
const int *viewport,
|
||
const ClutterVertex *vertices_in,
|
||
ClutterVertex *vertices_out,
|
||
int n_vertices);
|
||
|
||
gboolean _clutter_actor_set_default_paint_volume (ClutterActor *self,
|
||
GType check_gtype,
|
||
ClutterPaintVolume *volume);
|
||
|
||
G_END_DECLS
|
||
|
||
#endif /* _HAVE_CLUTTER_PRIVATE_H */
|