The LayoutManager class is an abstract proxy for the size requesition
and size allocation process in ClutterActor.
A ClutterLayoutManager sub-class must implement get_preferred_width(),
get_preferred_height() and allocate(); a ClutterContainer using the
LayoutManager API will then proxy the corresponding Actor virtual
functions to the LayoutManager instance. This allows having a generic
"blank" ClutterActor sub-class, implementing the ClutterContainer
interface, which leaves only the layout management implementation to
the application developers.
The rules to create signal marshallers and enumeration GTypes are
usually copied and pasted all over different projects, though they
are pretty generic and, given a little bit of parametrization, can
be put in separate Makefile.am files and included whenever needed.
The set_default_stage() method of StageManager should not be used
by application code; technically, nothing in Clutter uses it, and
StageManager's API is not considered public anyway.
The IN_DESTRUCTION flag is set around the unrealization and disposal of
the actor in clutter_actor_destroy() but is never unset (it's set twice
instead).
Reviewed-by: Emmanuele Bassi <ebassi@linux.intel.com>
Currently, setting the :text property has the side-effect of
setting the :use-markup property to FALSE. This prevents
constructing a Text actor, or setting its properties, like:
g_object_set (text,
"use-markup", TRUE,
"text", some_string,
NULL);
as the ordering becomes important. Unfortunately, the ordering
of the properties cannot be enforced with ClutterScript or
with language bindings.
The documentation of the clutter_text_set_text() method should
be expanded to properly specify that the set_text() method will
change the :use-markup property to FALSE as a side effect.
Transform functions allow the use of g_value_transform() to cast
GValues. It's very handy to have casts to and from G_TYPE_STRING as it
allows generic serialization and parsing of GTypes.
Reviewed-by: Emmanuele Bassi <ebassi@linux.intel.com>
Current parsing of units has a number of shortcomings:
* a number followed by trailing space (without any unit specified) was
not recognized,
* "5 emeralds" was parsed as 5em,
* the way we parse the digits after the separator makes us lose
precision for no good reason (5.0 is parsed as 5.00010014...f which
makes g_assert_cmpfloat() fail)
Let's define a stricter grammar we can recognize and try to do so. The
description is in EBNF form, removing the optional <> which is a pain
when having to write DocBook, and using '' for the terminal symbols.
Last step, add more ClutterUnits unit test to get a better coverage of
the grammar we want to parse.
Reviewed-by: Emmanuele Bassi <ebassi@linux.intel.com>
Parse #rgb and #rrggbb in addition to forms with the alpha channel
specified. This allows conversion of colour strings from documents such as
CSS where the alpha channel is not specified when using '#' notation.
This patch also adds the relevant conformance test.
Parse #rgb and #rrggbb in addition to forms with the alpha channel
specified. This allows conversion of colour strings from documents such as
CSS where the alpha channel is not specified when using '#' notation.
gdk is an optional clutter dependency, so the pick buffer debugging option
needs some guards so we don't break, for example, the OSX builds. This also
adds a comment for the bit fiddling done on the pick colors used to ensure
the pick colors are more distinguished while debugging. (we swap the
nibbles of each color component so that pick buffers don't just look black.)
ClutterGroup previously calculated the size as the distance from the
left edge of the leftmost child to the right edge of the rightmost
child except if there were any chidren left of the origin then the
left edge would be zero.
However the group is always allocated its size relative to its
origin so if all of the children are to the right of the origin then
the preferred size would not be large enough to reach the rightmost
child.
origin
┼──────────┐
│Group │
│ ┌────────┼─┐
│ │Child │ │
│ │ │ │
└─┼────────┘ │
│ │
└──────────┘
group size
╟──────────╢
This patch makes it so the size is always just the rightmost edge.
origin
┼────────────┐
│Group │
│ ┌──────────┤
│ │Child │
│ │ │
│ │ │
│ │ │
└─┴──────────┘
group size
╟────────────╢
Fixes bug:
http://bugzilla.openedhand.com/show_bug.cgi?id=1825
Since the Great Rework of ClutterUnits, functions have been using
'units' not 'unit' in their name. clutter_value_get_unit() is a left
over from a dark age, its declaration and documentation have been
updated but not the symbol itself.
Instead of having an assertion failure with a message of dubious
usefulness, we should probably use a more verbose warning explaining
what is the problem and what might be the cause.
The user-initiated resize is conflicting with the allocated size. This
happens because we change the size of the stage's X Window behind the
back of the size allocation machinery.
Instead, we should change the size of the actor whenever we receive a
ConfigureNotify event to reflect the new size of the actor.
We force the redraw before mapping, in the hope that when a composited
window manager maps the window it will have its contents ready; that is
not going to work: the solution for this problem requires the implementation
of a protocol for compositors, and not a hack.
Moreover, painting before mapping will cause a paint with the wrong
GL viewport size, which is the wrong thing to do on GLX.
When not building a debug build the compiler was warning about empty
else clauses with no braces due to code like:
if (blah)
do_foo();
else
COGL_NOTE (DRAW, "a-wibble");
This simply ensures that even for non debug builds COGL_NOTE will expand to
a single statement.
glVertexPointer expects positions with 2, 3 or 4 components, glColorPointer
expects colors with 3 or 4 components and glNormalPointer expects normals
with three components so when adding vertex buffer atributes with the names
"gl_Vertex", "gl_Color" or "gl_Normal" we assert these constraints and print
an explanation to the developer if not met.
This also fixes the previosly incorrect constraint that gl_Normal attributes
must have n_components == 1; thanks to Cat Sidhe for reporting this:
Bug: http://bugzilla.openedhand.com/show_bug.cgi?id=1819
Now if you export CLUTTER_DEBUG=dump-pick-buffers clutter will write out a
png, e.g. pick-buffer-00000.png, each time _clutter_to_pick() is called.
It's a rather crude way to debug the picking (realtime visualization in a
second stage would probably be nicer) but it we've used this approach
successfully numerous times when debugging Clutter picking issues so it
makes sense to have a debug option for it.
It looks like the intention was to duplicate an XVisualInfo in such a way
that the pointer could be returned and then later freed using XFree. But
Xalloc isn't an Xlib counterpart to XFree; Xlib doesn't provide a general
purpose malloc wrapper afik. By shuffling things about a bit, it was
possible to avoid the need for this hack.
By default, float * is considered as an out argument by gobject
introspection which is wrong for quite a few Cogl symbols. Start adding
annotations to fix that for the ones in the "Primitives" gtk-doc
section.
In the default implementation of container::destroy_child_meta Set child
meta qdata to NULL on the child and not the container, since the child
is the object that owns the data.
The lifetime of the journal VBO is entirely within the scope of the
cogl_journal_flush function so there is no need to store it globally
in the Cogl context. Instead, upload_vertices_to_vbo just returns the
new VBO. cogl_journal_flush stores this in a local variable and
destroys it before returning.
This also fixes an assertion when using the GLES backend which was
caused by nothing initialising the journal_vbo variable.
If the system clock rolls back between two frames then we need
to account for the change, to avoid stopping the timeline.
The best option, since a roll back can be any arbitrary amount
of milliseconds, is to skip a frame.
Fixes bug:
http://bugzilla.moblin.org/show_bug.cgi?id=3839
The framebuffer_object spec isn't clear in defining whether attaching a
texture as a renderbuffer with mipmap filtering enabled while the mipmaps
have not been uploaded should result in an incomplete framebuffer object.
(different drivers make different decisions)
To avoid an error with drivers that do consider this a problem we explicitly
set non mipmapped filters before calling glCheckFramebufferStatusEXT. The
filters will later be reset when the texture is actually used for rendering
according to the filters set on the corresponding CoglMaterial.
Since an actor can only be parented to one container we don't need
the extra complications of maintaining a list of ChildMeta objects
attached to an actor in the default implementation of the Container
interface.
Instead of using ClutterActor for the base class of the Stage
implementation we should extend the StageWindow interface with
the required bits (geometry, realization) and use a simple object
class.
This require a wee bit of changes across Backend, Stage and
StageWindow, even though it's mostly re-shuffling.
First of all, StageWindow should get new virtual functions:
* geometry:
- resize()
- get_geometry()
* realization
- realize()
- unrealize()
This covers all the bits that we use from ClutterActor currently
inside the stage implementations.
The ClutterBackend::create_stage() virtual function should create
a StageWindow, and not an Actor (it should always have been; the
fact that it returned an Actor was a leak of the black magic going
on underneath). Since we never guaranteed ABI compatibility for
the Backend class, this is not a problem.
Internally to ClutterStage we can finally drop the shenanigans of
setting/unsetting actor flags on the implementation: if the realization
succeeds, for instance, we set the REALIZED flag on the Stage and
we're done.
As an initial proof of concept, the X11 and GLX stage implementations
have been ported to the New World Order(tm) and show no regressions.
The old code checked whether the property began with 'signal-' and
then checked for 'signal-swapped' and 'signal-after'. This prevented
you from animating a property called for example 'signal-strength'.
The check for the prefix is now in a separate function which also adds
a 'signal-swapped-after' prefix for completeness.
Fixes bug:
http://bugzilla.openedhand.com/show_bug.cgi?id=1798
The blend string compiler checks that the syntax of a function name is
[A-Za-z_]*, preventing the use of DOT3_RGB[A].
Signed-off-by: Emmanuele Bassi <ebassi@linux.intel.com>
The column names are optional - ClutterModel will use the GType name
if there is no user-specified column name. Hence, the ::finalize vfunc
should not try to free an empty column names vector.
Fixes bug:
http://bugzilla.openedhand.com/show_bug.cgi?id=1790
