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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);
void _clutter_stage_do_paint (ClutterStage *stage,
const ClutterGeometry *clip);
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,
ClutterEvent *event);
gboolean _clutter_stage_has_queued_events (ClutterStage *stage);
void _clutter_stage_process_queued_events (ClutterStage *stage);
void _clutter_stage_update_input_devices (ClutterStage *stage);
int _clutter_stage_get_pending_swaps (ClutterStage *stage);
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);
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
void _clutter_stage_add_device (ClutterStage *stage,
ClutterInputDevice *device);
void _clutter_stage_remove_device (ClutterStage *stage,
ClutterInputDevice *device);
gboolean _clutter_stage_has_device (ClutterStage *stage,
ClutterInputDevice *device);
Store the motion event deliver flag in ClutterStage Once upon a time, the land of Clutter had a stage singleton. It was created automatically at initialization time and stayed around even after the main loop was terminated. The singleton was content in being all there was. There also was a global API to handle the configuration of the stage singleton that would affect the behaviour on other classes, signals and properties. Then, an evil wizard came along and locked the stage singleton in his black tower, and twisted it until it was possible to create new stages. These new stages were pesky, and didn't have the same semantics of the singleton: they didn't stay around when closed, or terminate the main loop on delete events. The evil wizard also started moving all the stage-related API from the global context into class-specific methods. Finally, the evil wizard cast a spell, and the stage singleton was demoted to creation on demand - and until somebody called the clutter_stage_get_default() function, the singleton remained in a limbo of NULL pointers and undefined memory areas. There was a last bit - literally - of information still held by the global API; a tiny, little flag that disabled per-actor motion events. The evil wizard added private accessors for it, and stored it inside the stage private structure, in preparation for a deprecation that would come in a future development cycle. The evil wizard looked down upon the land of Clutter from the height of his black tower; the lay of the land had been reshaped into a crucible of potential, and the last dregs of the original force of creation were either molted into new, useful shapes, or blasted away by the sheer fury of his will. All was good.
2011-02-18 12:19:04 -05:00
void _clutter_stage_set_motion_events_enabled (ClutterStage *stage,
gboolean enabled);
gboolean _clutter_stage_get_motion_events_enabled (ClutterStage *stage);
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);
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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