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mutter/clutter/clutter-stage-private.h

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Add copyright notices
2010-10-21 08:13:00 -04:00
/*
* Clutter.
*
* An OpenGL based 'interactive canvas' library.
*
* Copyright (C) 2010 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
Clean up clutter-private.h/3 Move Stage private API to a separate header.
2010-10-21 06:29:09 -04:00
#ifndef __CLUTTER_STAGE_PRIVATE_H__
#define __CLUTTER_STAGE_PRIVATE_H__
#include <clutter/clutter-stage-window.h>
#include <clutter/clutter-stage.h>
Clean up crossing event synthesis code Clutter should just require that the windowing system used by a backend adds a device to the stage when the device enters, and removes it from the stage when the device leaves; with this information, we can synthesize every crossing event and update the device state without other intervention from the backend-specific code. The generation of additional crossing events for actors that are covering the stage at the coordinates of the crossing event should be delegated to the event processing code. The x11 and win32 backends need to be modified to relay the enter and leave events from the windowing system.
2011-01-27 12:26:16 -05:00
#include <clutter/clutter-input-device.h>
Optimize culling by doing culling in eye-coordinates This implements a variation of frustum culling whereby we convert screen space clip rectangles into eye space mini-frustums so that we don't have to repeatedly transform actor paint-volumes all the way into screen coordinates to perform culling, we just have to apply the modelview transform and then determine each points distance from the planes that make up the clip frustum. By avoiding the projective transform, perspective divide and viewport scale for each point culled this makes culling much cheaper.
2011-02-01 13:32:08 -05:00
#include <clutter/clutter-private.h>
Clean up clutter-private.h/3 Move Stage private API to a separate header.
2010-10-21 06:29:09 -04:00
stage: adds internal_get_active_framebuffer API This adds an internal _clutter_stage_get_active_framebuffer function that can be used to get a pointer to the current CoglFramebuffer pointer that is in use, in association with a given stage. The "active" infix in the function name is there because we shouldn't assume that a stage will always correspond to only a single framebuffer so we aren't getting a pointer to a sole framebuffer, we are getting a pointer to the framebuffer that is currently in use/being painted. This API is now used for culling purposes where we need to check if we are currently painting an actor to a framebuffer that is offscreen, that doesn't correspond to the stage.
2011-03-10 17:05:03 -05:00
#include <cogl/cogl.h>
Clean up clutter-private.h/3 Move Stage private API to a separate header.
2010-10-21 06:29:09 -04:00
G_BEGIN_DECLS
typedef struct _ClutterStageQueueRedrawEntry ClutterStageQueueRedrawEntry;
/* stage */
ClutterStageWindow *_clutter_stage_get_default_window (void);
Remove internal usage of ClutterGeometry in StageWindow The ClutterGeometry type is a poor substitute of cairo_rectangle_int_t, with unsigned integers for width and height to complicate matters. Let's remove the internal usage of ClutterGeometry and switch to the rectangle type from Cairo. https://bugzilla.gnome.org/show_bug.cgi?id=656663
2011-08-16 11:01:22 -04:00
void _clutter_stage_do_paint (ClutterStage *stage,
const cairo_rectangle_int_t *clip);
Clean up clutter-private.h/3 Move Stage private API to a separate header.
2010-10-21 06:29:09 -04:00
void _clutter_stage_set_window (ClutterStage *stage,
ClutterStageWindow *stage_window);
ClutterStageWindow *_clutter_stage_get_window (ClutterStage *stage);
void _clutter_stage_get_projection_matrix (ClutterStage *stage,
CoglMatrix *projection);
void _clutter_stage_dirty_projection (ClutterStage *stage);
void _clutter_stage_set_viewport (ClutterStage *stage,
viewport: consistently use floats for viewports OpenGL < 4.0 only supports integer based viewports and internally we have a mixture of code using floats and integers for viewports. This patch switches all viewports throughout clutter and cogl to be represented using floats considering that in the future we may want to take advantage of floating point viewports with modern hardware/drivers.
2011-02-01 11:51:58 -05:00
float x,
float y,
float width,
float height);
Clean up clutter-private.h/3 Move Stage private API to a separate header.
2010-10-21 06:29:09 -04:00
void _clutter_stage_get_viewport (ClutterStage *stage,
viewport: consistently use floats for viewports OpenGL < 4.0 only supports integer based viewports and internally we have a mixture of code using floats and integers for viewports. This patch switches all viewports throughout clutter and cogl to be represented using floats considering that in the future we may want to take advantage of floating point viewports with modern hardware/drivers.
2011-02-01 11:51:58 -05:00
float *x,
float *y,
float *width,
float *height);
Clean up clutter-private.h/3 Move Stage private API to a separate header.
2010-10-21 06:29:09 -04:00
void _clutter_stage_dirty_viewport (ClutterStage *stage);
void _clutter_stage_maybe_setup_viewport (ClutterStage *stage);
void _clutter_stage_maybe_relayout (ClutterActor *stage);
gboolean _clutter_stage_needs_update (ClutterStage *stage);
gboolean _clutter_stage_do_update (ClutterStage *stage);
void _clutter_stage_queue_event (ClutterStage *stage,
Avoid needless event copies when queueing from a backend to a stage All backends follow the same pattern of queueing events first in ClutterMainContext, then copying them to a ClutterStage queue and immediately free them. Instead, we can just pass ownership of events directly to ClutterStage thus avoiding the allocation and copy in between. https://bugzilla.gnome.org/show_bug.cgi?id=711857
2013-11-11 12:16:32 -05:00
ClutterEvent *event,
gboolean copy_event);
Clean up clutter-private.h/3 Move Stage private API to a separate header.
2010-10-21 06:29:09 -04:00
gboolean _clutter_stage_has_queued_events (ClutterStage *stage);
void _clutter_stage_process_queued_events (ClutterStage *stage);
void _clutter_stage_update_input_devices (ClutterStage *stage);
Add clutter_stage_set_sync_delay() New experimental API is added to allow changing the way that redraws are timed for a stage to include a "sync delay" - a period after the vertical blanking period where Clutter simply waits for updates. In detail, the algorithm is that when the master clock is restarted after drawing a frame (in the case where there are timelines running) or started fresh in response to a queued redraw or relayout, the start is scheduled at the next sync point (sync_delay ms after the predicted vblank period) rather than done immediately. https://bugzilla.gnome.org/show_bug.cgi?id=692901
2012-11-08 12:42:24 -05:00
void _clutter_stage_schedule_update (ClutterStage *stage);
gint64 _clutter_stage_get_update_time (ClutterStage *stage);
void _clutter_stage_clear_update_time (ClutterStage *stage);
Clean up clutter-private.h/3 Move Stage private API to a separate header.
2010-10-21 06:29:09 -04:00
gboolean _clutter_stage_has_full_redraw_queued (ClutterStage *stage);
stage: Move _clutter_do_pick to clutter-stage.c This moves the implementation of _clutter_do_pick to clutter-stage.c and renames it _clutter_stage_do_pick. This function can be compared to _clutter_stage_do_update/redraw in that it prepares for and starts a traversal of a scenegraph descending from a given stage. Since it is desirable that this function should have access to the private state of the stage it is awkward to maintain outside of clutter-stage.c. Besides moving _clutter_do_pick this patch is also able to remove the following private state accessors from clutter-stage-private.h: _clutter_stage_set_pick_buffer_valid, _clutter_stage_get_pick_buffer_valid, _clutter_stage_increment_picks_per_frame_counter, _clutter_stage_reset_picks_per_frame_counter and _clutter_stage_get_picks_per_frame_counter.
2011-03-15 09:17:04 -04:00
ClutterActor *_clutter_stage_do_pick (ClutterStage *stage,
gint x,
gint y,
ClutterPickMode mode);
Clean up clutter-private.h/3 Move Stage private API to a separate header.
2010-10-21 06:29:09 -04:00
ClutterPaintVolume *_clutter_stage_paint_volume_stack_allocate (ClutterStage *stage);
void _clutter_stage_paint_volume_stack_free_all (ClutterStage *stage);
Optimize culling by doing culling in eye-coordinates This implements a variation of frustum culling whereby we convert screen space clip rectangles into eye space mini-frustums so that we don't have to repeatedly transform actor paint-volumes all the way into screen coordinates to perform culling, we just have to apply the modelview transform and then determine each points distance from the planes that make up the clip frustum. By avoiding the projective transform, perspective divide and viewport scale for each point culled this makes culling much cheaper.
2011-02-01 13:32:08 -05:00
const ClutterPlane *_clutter_stage_get_clip (ClutterStage *stage);
Clean up clutter-private.h/3 Move Stage private API to a separate header.
2010-10-21 06:29:09 -04:00
ClutterStageQueueRedrawEntry *_clutter_stage_queue_actor_redraw (ClutterStage *stage,
ClutterStageQueueRedrawEntry *entry,
ClutterActor *actor,
ClutterPaintVolume *clip);
void _clutter_stage_queue_redraw_entry_invalidate (ClutterStageQueueRedrawEntry *entry);
stage: adds internal_get_active_framebuffer API This adds an internal _clutter_stage_get_active_framebuffer function that can be used to get a pointer to the current CoglFramebuffer pointer that is in use, in association with a given stage. The "active" infix in the function name is there because we shouldn't assume that a stage will always correspond to only a single framebuffer so we aren't getting a pointer to a sole framebuffer, we are getting a pointer to the framebuffer that is currently in use/being painted. This API is now used for culling purposes where we need to check if we are currently painting an actor to a framebuffer that is offscreen, that doesn't correspond to the stage.
2011-03-10 17:05:03 -05:00
CoglFramebuffer *_clutter_stage_get_active_framebuffer (ClutterStage *stage);
Make the pick id pool per Stage The id pool used for the actor's id should be a per-stage field. At some point, we might have a Stage mapped to multiple framebuffers, or each Stage mapped to a different framebuffer; also, on backend with low color precision we don't want to exhaust the size of the available ids with a global pool. Finally, it's yet another thing we can remove from the global Clutter context. Having the id pool allocated per-stage, and the pick id assigned on Actor:mapped will make the whole pick-id more reliable and future proof. http://bugzilla.clutter-project.org/show_bug.cgi?id=2633 https://bugzilla.gnome.org/show_bug.cgi?id=647876
2011-04-11 09:11:39 -04:00
gint32 _clutter_stage_acquire_pick_id (ClutterStage *stage,
ClutterActor *actor);
void _clutter_stage_release_pick_id (ClutterStage *stage,
gint32 pick_id);
ClutterActor * _clutter_stage_get_actor_by_pick_id (ClutterStage *stage,
gint32 pick_id);
drag/drop actions: add touch event support https://bugzilla.gnome.org/show_bug.cgi?id=678049
2012-06-13 11:02:05 -04:00
void _clutter_stage_add_pointer_drag_actor (ClutterStage *stage,
ClutterInputDevice *device,
ClutterActor *actor);
ClutterActor * _clutter_stage_get_pointer_drag_actor (ClutterStage *stage,
ClutterInputDevice *device);
void _clutter_stage_remove_pointer_drag_actor (ClutterStage *stage,
ClutterInputDevice *device);
void _clutter_stage_add_touch_drag_actor (ClutterStage *stage,
ClutterEventSequence *sequence,
ClutterActor *actor);
ClutterActor * _clutter_stage_get_touch_drag_actor (ClutterStage *stage,
ClutterEventSequence *sequence);
void _clutter_stage_remove_touch_drag_actor (ClutterStage *stage,
ClutterEventSequence *sequence);
stage: Allow tracking dragged actors We should be able to internally attach the actor currently being dragged to the device that is dragging it. https://bugzilla.gnome.org/show_bug.cgi?id=652842
2011-06-17 11:51:05 -04:00
stage: Add state tracking State changes on the Stage are currently deferred to the windowing system backends, but the code is generally the same, and it should be abstracted neatly inside the Stage class itself. There's also the extra caveat for backends that state changes on a Stage must also emit a ClutterEvent of type CLUTTER_STAGE_STATE, a requirement that needlessly complicates the backend code.
2012-01-25 16:24:47 -05:00
ClutterStageState _clutter_stage_get_state (ClutterStage *stage);
gboolean _clutter_stage_is_activated (ClutterStage *stage);
gboolean _clutter_stage_is_fullscreen (ClutterStage *stage);
gboolean _clutter_stage_update_state (ClutterStage *stage,
ClutterStageState unset_state,
ClutterStageState set_state);
stage: Adjust drawing to include the window scaling factor In order to transparently support high DPI density displays, we must maintain all coordinates and sizes exactly as they are now — but draw them on a surface that is scaled up by a certain factor. In order to do that we have to change the viewport and initial transformation matrix so that they are scaled up by the same factor. https://bugzilla.gnome.org/show_bug.cgi?id=705915
2013-08-14 06:19:22 -04:00
void _clutter_stage_set_scale_factor (ClutterStage *stage,
int factor);
Clean up clutter-private.h/3 Move Stage private API to a separate header.
2010-10-21 06:29:09 -04:00
G_END_DECLS
#endif /* __CLUTTER_STAGE_PRIVATE_H__ */
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