The ClutterAlpha API reference page should also list the
easing modes Clutter provides by default, by showing the
curves used by each entry in the AnimationMode enumeration.
We can also remove the incomplete graph showing the old
alpha functions.
Instead of using our own homegrown alpha functions, we should
use the easing functions also shared by other animation frameworks,
like jQuery and Tween, in the interests of code portability.
The easing functions have been defined by Robert Penner and
are divided into three categories:
In Out InOut
Each category has a particular curve:
Quadratic
Cubic
Quartic
Quintic
Sinusoidal
Exponential
Circular
In addition, there are "physical" curves:
Elastic
Back (overshooting cubic)
Bounce (exponentially decaying parabolic)
Finally, the Linear curve is also provided as a reference.
The functions are private, and are meant to be used only
through their logical id as provided by the AnimationMode
enumeration.
The tests should be updated as well to match the new
easing functions.
The current Alpha value is an unsigned integer that can be used
implicitly as a fixed point value. This makes writing an alpha
function overshooting below and above the current range basically
impossible without complicating an already complex code, and
creating weird corner cases.
For this reason, the Alpha value should be defined as a floating
point normalized value, spanning a range between 0.0 and 1.0; in
order to allow overshooting, the valid range is extended one unit
below and one unit above, thus making it -1.0 .. 2.0.
This commit updates the various users of the ClutterAlpha API
and the tests cases.
This commit also removes all the current alpha functions exposed
in the public API.
It's more sensible to use 2^n-1 for a max tile-waste value rather
than 2^n, so change the value default from 64 to 63. Example:
191 and 192 will both be sliced to 128+64 rather than having
191=>128+64, 192=>256.
http://bugzilla.openedhand.com/show_bug.cgi?id=1402
Signed-off-by: Emmanuele Bassi <ebassi@linux.intel.com>
While X11 Pixmap and Window types only have 32-bits of data, they
are actually 'unsigned long'. Change the "window" and "pixmap"
property of ClutterX11TexturePixmaps to be ulong.
This fixes 64-bit bugs where ClutterGLXTexturePixmap passed a
reference to Pixmap to g_object_get("pixmap", &pixmap, ...);
http://bugzilla.openedhand.com/show_bug.cgi?id=1405
Signed-off-by: Emmanuele Bassi <ebassi@linux.intel.com>
Since the stage in the EGL native backend only has one size, and it
is determined at realization, we can simply set the SYNC_MATRICES
private flag and let _clutter_stage_maybe_setup_viewport() set up
the GL viewport at the first redraw.
Both clutter_alpha_new_with_func() and clutter_alpha_set_func()
will not register a global alpha function, so we need to update
the documentation to explicitly say so.
The animation mode parameters and properties are now slightly
anonymous unsigned longs, so we need to clarify in the documentation
that the user should either pass a ClutterAnimationMode value or
the result of registering an alpha function.
The animation mode symbolic id might come from the AnimationMode
enumeration or from the clutter_alpha_register_*() family of
functions. For this reason, we should use a gulong instead of
ClutterAnimationMode whenever we have an "animation mode" parameter
or property.
In order to unify alpha functions and animation modes in ClutterAlpha
we should be able to register alpha functions and get a logical id
for them; the logical id will then be available to be used by
clutter_alpha_set_mode().
The registration requires API changes in ClutterAlpha constructors
and methods. It also provides the chance to shift ClutterAlpha
towards the use of animations modes only, and to alpha functions
as a convenience API for language bindings alone.
The changes from the GL version of cogl-texture.c have been mirrored
in the GLES version. This adds the cogl_texture_new_from_bitmap
function and fixes the build errors.
If you try to use the CLUTTER_ACTOR_IS_* macros defined in ClutterActor
like this:
typedef struct { unsigned int reactive : 1; } foo_t;
foo_t f; f.reactive = CLUTTER_ACTOR_IS_REACTIVE (actor);
It will blow up because while the macros evaluate to 0 they can also
evaluate to non-zero values. Since most of the boolean flags in
Clutter and Clutter-based code are going to be stored like in the
example above, we should change the macros and let them evaluate
stricly either to 0 or to 1.
The Effects API and all related symbols have been superceded by
the newly added Animation API and clutter_actor_animate().
This commit removes the Effects implementation, the documentation
and the interactive test/example code.
The ::load-finished signal is emitted only when loading a texture
using clutter_texture_set_from_file(). Since this breaks user
expectations and consistency, we should also emit ::load-finished
when loading a texture from image data.
* async-textures:
Whitespace fixes in ClutterTexture
[async-loading] Do not force the texture size on async load
[async-loading] Update asynchronous image loading
Add API for extracting image size from a file
Update/clean and apply the async-texture patch from bug #1144
Since Clutter changed to using a layout scheme the handling_configure
flag no longer works because the allocate method is not invoked
immediately during the call to set_size from the ConfigureNotify
handler. However it is also no longer neccessary because the resizes
are effectively batched up until a relayout is run so it won't cause
an infinite loop of resize and notify events anyway.
* animation-improvements:
[docs] Add ClutterAnimatable to the API reference
Add license notice to ClutterAnimation files
[docs] Update the ClutterAnimation section
[animation] Extend ClutterAnimation support to all objects
[animation] Use ClutterAnimatable inside Animation
[animation] Add ClutterAnimatable
[animation] Allow registering custom progress function
[animation] Interval::compute_value should return a boolean
Animate ClutterColor properties
ClutterText already has code to try to preserve the x position when
moving up or down. A target x-position is stored and the cursor is
positioned at the nearest point to that in the appropriate line when
up or down is pressed. However the target position was never cleared
so it would always target the x-position of the cursor from the first
time you pressed up or down.
To fix this the patch clears the target position in set_position and
then sets it after the call in real_move_up/down. That way pressing
up or down sets the target position and any other movement will clear
it.
To get an index for the pixel position in the line
pango_layout_line_x_to_index is used. However when x is greater than
the length of the line then the index before the last grapheme is
returned which was causing it to jump to the penultimate
character. The patch makes it add on the trailing value so that it
will jump to the last character.
The old function ended up returning the length of the string when pos
was zero. This caused it to insert characters at the end when the
cursor was at the beginning of the string.
If an unbound control key is pressed (such as Ctrl+R) it would insert
a rectangle into the text.
Also zero is considered a valid unicode character by
g_unichar_validate so pressing a key such as shift would cause the
current selection to be deleted. The character isn't actually inserted
because insert_unichar disallows zeroes.
The GLES 2 wrapper needs to set up some state before each
draw. Previously this was acheived by wrapping glDrawArrays. Since the
multiple-texture-rectangle branch merge, glDrawElements is used
instead so we also need a wrapper for that.
It was also directly calling glBindTexture. GLES 2 uses a wrapper for
this function so that it can cope with GL_ALPHA format textures. The
format of the current texture needs to be stored as well as the target
and object number for this to work.
The BindingPool constructor should only check for duplicate pools
and then set the :name constructor-only property. If a BindingPool
is created without a name we also make a fuss about it.
It is also possible to simply dispose of a binding pool using
g_object_unref(), as long as it has been created by using
clutter_binding_pool_new() or directly with g_object_new(). Only
BindingPools attached to a class are not owned by the user.
ClutterBindingPool is already "problematic" in terms of memory
management for language bindings and gobject-introspection. It
also lacks a GType.
Turning ClutterBindingPool into a GBoxed would not make much
sense, since it does not adhere to the copy/free semantics. It
could be referenced/unreferenced, but in that case we can just
as well use GObject as a base class instead of reimplemeting
a ref-counted object and then boxing it.
ClutterBindingPool is obviously a terminal class, so we just
hide the instance and class structures.
The size of the texture as retrieved by the filename should
be set as the image size, not as the actor size, in order to
respect the :sync-size property.
When the asynchronous loading process terminates, we queue
a relayout so that the scene is updated.
Provide a main loop-based fallback to the asynchronous loading in
case the GLib threading support hasn't been enabled. This also
allows us to clean up the asynchronous loading machinery and have
it behave consistently across different scenarios.
Emit the ::load-finished even if the asynchronous loading from
disk was not enabled.
Finally, block clutter_texture_set_from_file() until we have an
image width and height, so that querying the texture actor size
after set_from_file() will still yield the correct result even
when asynchronous loading is set.
For the asynchronous loading we need a function call that parses
a file, given its path, and retrieves the image width and height.
This commit adds cogl_bitmap_get_size_from_file() to the CoglBitmap
API.
Add a ClutterStage::queue-redraw signal.
The purpose of this signal is to allow combining the Clutter redraw
idle with another redraw idle such as gtk's (or any other one really;
this is desirable anytime Clutter is not the only thing drawing to
a toplevel window).
To override the default, you would connect to ::queue-redraw and then
stop the signal emission.
By creating an ARGB texture for 24bpp pixmaps we were exposing an undefined
alpha channel to the blending and texture combine stages which resulted in
nasty artefacts. (This issue was seen on i945 + DRI2)
Since we only update the GL viewport when we receive a ConfigureNotify
event on X11, we also need a function to allow other toolkits to tell
a stage that the viewport should be updated.
This commit adds clutter_stage_ensure_viewport(), a function that simply
sets the private SYNC_MATRICES flag on the stage and then queues a
redraw.
This function should be called by libraries integrating Clutter with
other toolkits, like clutter-gtk or clutter-qt.
Continuation of the fix in commit 00a3c69868.
Instead of using a separate flag for the resize process, just
delay the setting of the CLUTTER_ACTOR_SYNC_MATRICES flag on the
stage to the point when we receive a ConfigureNotify event from
X11.
This commit will break the stage embedding into other toolkits.
There is a race condition when we resize a stage before showing
it on X11.
The race goes like this:
- clutter_init() creates the default stage and realize it, which
will cause a 640x480 Window to be created
- call set_size(800, 600) on the stage will cause the Window to be
resized to 800x600
- call show() on the stage for the first time will cause COGL
to set up an 800 by 600 GL viewport
- the Window will be mapped, which will cause X to notify the
window manager that the Window should be resized to 800x600
- the window manager will approve the resize
- X resizes the drawable to 800x600
To fix the race, we need to defer COGL from setting up the viewport
until we receive a ConfigureNotify event and the X server has resized
the Drawable.
In order to defer the call to cogl_setup_viewport() we add a new
private flag, CLUTTER_STAGE_IN_RESIZE; the flag is checked whenever
we need to change the viewport size along with the SYNC_MATRICES
private flag. Thus, cogl_setup_viewport() will be called only if
SYNC_MATRICES is set and IN_RESIZE is not set.
Some of the read-write properties of ClutterText were missing
an implementation in clutter_text_get_property(), as well as
the :position and :selection-bound properties being wrongly
converted from fixed point to integer, passing through floating
point values.
ClutterUnits should not be used interchangeably as, or with
ClutterFixed values. ClutterUnits should also not be assumed
to be integers.
This commit fixes the last few improper usages of ClutterUnit
values, and adds a CLUTTER_UNITS_FORMAT macro for safely printing
ClutterUnit values with printf().
* animatable-iface:
[docs] Add ClutterAnimatable to the API reference
Add license notice to ClutterAnimation files
[animation] Use ClutterAnimatable inside Animation
[animation] Add ClutterAnimatable
Instead of limiting the use of ClutterAnimation to ClutterActor
instances, relax the constraint to include all GObject classes.
ClutterAnimation is not using actor-specific API, since it is
only using properties.
The only actor-based API is the clutter_actor_animate() family
of functions.
ClutterAnimation should check if the object is implementing the
Animatable interface, and if so delegate to it the computation
of the value along the interval initial and final value, depending
on the progress.
The ClutterAnimatable interface is meant to be used by GObject
classes to override the value computation for an animatable
property within the boundaries of an interval.
It is composed of a single virtual function, animate_property();
its implementation will receive the ClutterAnimation used to
animate the object; the property name; the initial and final
interval values; and the progress factor as retrieved by the
Alpha object bound to the Animation instance.
A ClutterInterval can change the way the progress is computed
by subclassing and overriding the ::compute_value() virtual function.
It should also be possible to register a custom progress function
in the same way it is possible to register a custom transformation
function between two GValues.
This commit adds an internal, global hash table that maintains a
GType <-> progress function association; each ClutterInterval
will check if there is a progress function registered for the
GType of the initial and final values of the interval and, if
it has been found, it will call it to compute the value of the
interval depending on the progress factor.
If the computation of the interval value depending on the progress
was not successful, ClutterInterval::compute_value() should return
this information to the caller.
Bug 1289 - Draw multiple glyphs at once
The multiple-texture-rectangle branch adds a new Cogl texture function
called cogl_texture_multiple_rectangles which is used to draw multiple
rectangles out of a texture using a single GL call. This is
significantly faster than drawing the rectangles with individual calls
on some platforms. The Pango renderer now uses this to speed up
rendering.
The conflicts are just due to the whitespace fixes in cb569a5.
Conflicts:
clutter/cogl/gl/cogl-context.c
clutter/cogl/gl/cogl-context.h
clutter/cogl/gl/cogl-texture.c
