Commit Graph

13 Commits

Author SHA1 Message Date
Emmanuele Bassi
1776ac8ed5 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
2011-09-26 12:05:55 +01:00
Emmanuele Bassi
530a13f02f 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
2011-06-20 14:31:07 +01:00
Emmanuele Bassi
b6eb5728e1 stage: Make per-actor motion event delivery accessors public
Complete the quest of commit bc548dc862
by making the ClutterStage methods for controlling the per-actor motion
and crossing event delivery public, and deprecating the global ones.
2011-06-20 11:41:28 +01:00
Emmanuele Bassi
043f804452 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
2011-05-06 17:47:41 +01:00
Robert Bragg
c739cb2809 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.
2011-04-11 15:28:53 +01:00
Robert Bragg
ec0b781466 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.
2011-04-11 14:31:31 +01:00
Robert Bragg
19b8622983 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.
2011-03-07 13:26:20 +00:00
Robert Bragg
013b2433f0 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.
2011-03-07 13:26:19 +00:00
Emmanuele Bassi
bc548dc862 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 19:41:41 +00:00
Emmanuele Bassi
82d1e5a6ee 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.
2011-01-28 18:19:49 +00:00
Tomeu Vizoso
373140c830 Discard the current pick buffer...
if we are asked to pick with a different mode.

http://bugzilla.clutter-project.org/show_bug.cgi?id=2385
2010-11-08 16:45:15 +00:00
Emmanuele Bassi
cf46c8197e Add copyright notices 2010-10-21 13:13:00 +01:00
Emmanuele Bassi
8613013ab0 Clean up clutter-private.h/3
Move Stage private API to a separate header.
2010-10-21 11:33:26 +01:00