Commit Graph

63 Commits

Author SHA1 Message Date
Craig R. Hughes
33303f92f3 Minor whitespace fix for clutter color parsing of hsla(h,s,l,a)
Previously, if there was whitespace between "l" and the comma before the
alpha value, parsing would fail.  This patch allows that whitespace
making it consistent with whitespace being allowed everywhere else.

https://bugzilla.gnome.org/show_bug.cgi?id=663594
2011-11-10 12:57:34 +00:00
Emmanuele Bassi
2b81d90dd7 Eliminate G_CONST_RETURN
The G_CONST_RETURN define in GLib is, and has always been, a bit fuzzy.

We always used it to conform to the platform, at least for public-facing
API.

At first I assumed it has something to do with brain-damaged compilers
or with weird platforms where const was not really supported; sadly,
it's something much, much worse: it's a define that can be toggled at
compile-time to remove const from the signature of public API. This is a
truly terrifying feature that I assume was added in the past century,
and whose inception clearly had something to do with massive doses of
absynthe and opium — because any other explanation would make the
existence of such a feature even worse than assuming drugs had anything
to do with it.

Anyway, and pleasing the gods, this dubious feature is being
removed/deprecated in GLib; see bug:

  https://bugzilla.gnome.org/show_bug.cgi?id=644611

Before deprecation, though, we should just remove its usage from the
whole API. We should especially remove its usage from Cally's internals,
since there it never made sense in the first place.
2011-06-07 16:06:24 +01:00
Damien Lespiau
6100aee5bd color: Mark the new static color API as being new from 1.6
The patch was written a while ago but only merged in the 1.5.x cycle.
2011-01-17 15:22:48 +00:00
Emmanuele Bassi
acd3d61568 docs: Fix listitem tag 2010-12-08 14:26:27 +00:00
Emmanuele Bassi
c454526bbb docs: Clean up clutter_color_from_string()
Add hsl() and hsla() formats, and clean up the wording.
2010-12-08 14:03:02 +00:00
Emmanuele Bassi
08308fd397 docs: Close a tag 2010-11-29 12:51:52 +00:00
Emmanuele Bassi
1db8b8a70e color: Do not shadow a variable
Avoid a warning.
2010-11-22 17:01:17 +00:00
Emmanuele Bassi
f4531aef4b color: And finally, add hsla() support
Missed it when reading the CSS spec.
2010-11-22 15:07:01 +00:00
Emmanuele Bassi
e86db85cd2 color: Support the CSS hsl() notation
Since we support the rgb() and rgba() notations we might as well also
support the hsl() one.
2010-11-22 15:02:47 +00:00
Emmanuele Bassi
ab6da347f6 color: Support CSS color definitions
The CSS Color Module 3, available at:

  http://www.w3.org/TR/css3-color/

allows defining colors as:

  rgb ( r, g, b )
  rgba ( r, g, b, a)

along with the usual hexadecimal and named notations.

The r, g, and b channels can be:

  • integers between 0 and 255
  • percentages, between 0% and 100%

The alpha channel, if included using the rgba() modifier, can be a
floating point value between 0.0 and 1.0.

The ClutterColor parser should support this notation.
2010-11-22 14:38:44 +00:00
Emmanuele Bassi
985518c601 color: Add named, global colors
Since EGA colors are apparently all the rage in other toolkits, Clutter
should not be left out. On top of the usual CGA/EGA palette the static
colors also include the Tango Icon palette, which at least is more
pleasant to the eye.

Static colors are accessed through an enumeration by using
clutter_color_get_static(), or using the short-hand pre-processor
macros.

http://bugzilla.clutter-project.org/show_bug.cgi?id=2066
2010-11-11 13:14:23 +00:00
Emmanuele Bassi
7dd09e2186 Use G_DEFINE_BOXED_TYPE for all boxed types
We actually need a couple more macros for registering GValue
transformation functions. Those should be added to upstream
GLib.
2010-10-18 11:26:45 +01:00
Emmanuele Bassi
d5376bf317 color: Add Color.interpolate() method
The interpolate() method does what it says on the tin: it interpolates
between two colors using the given factor.

ClutterColor uses it to register a progress function for Intervals.
2010-10-11 15:39:19 +01:00
Emmanuele Bassi
ca8db4c2ee Add caller-allocates annotations
For ClutterColor, ClutterUnits, ClutterInterval and the Perspective
accessor in ClutterStage.
2010-09-08 17:04:21 +01:00
Emmanuele Bassi
8a5686d835 Further annotation fixes 2010-09-08 16:41:47 +01:00
Owen W. Taylor
f1c44a27a1 introspection: Add missing (out) annotations
Comprehensively add (out) annotations to functions parameters
returning int/float/double.

Not handled here: structure out returns like ClutterColor or
ClutterPerspective or GValue that should get (out caller-allocates).

Not handled here: Cogl

http://bugzilla.clutter-project.org/show_bug.cgi?id=2302
2010-09-08 15:43:07 +01:00
Neil Roberts
f4ee7dc0e1 clutter-color: Don't directly read the contents of GValue structs
The code for implementing ClutterColor as GParamSpec and the
color↔string transformation functions were assuming that ClutterColor
owns the data in the GValue struct and directly reading
data[0].v_pointer to get a pointer to the color. However ClutterColor
is actually a boxed type and the format of the data array is meant to
be internal to GObject so it is not safe to poke around in it
directly. This patch changes it to use g_value_get_boxed to get the
pointer.

Also, boxed types allow a NULL value to be stored and not all of the
code was coping with this. This patch also attempts to fix that.

http://bugzilla.openedhand.com/show_bug.cgi?id=2068
2010-05-05 18:49:09 +01:00
Neil Roberts
fa1638c0ab clutter-color: Remove the value table
ClutterColor has long had a GTypeValueTable struct around and the
functions defined to be implemented as a fundamental type. However the
struct was never actually used anywhere and ClutterColor is actually
defined as a boxed type. This patch removes the table because it is
very confusing to have code lying around that is not used.

http://bugzilla.openedhand.com/show_bug.cgi?id=2068
2010-05-05 18:49:09 +01:00
Emmanuele Bassi
79acb088e7 Remove mentions of the FSF address
Since using addresses that might change is something that finally
the FSF acknowledge as a plausible scenario (after changing address
twice), the license blurb in the source files should use the URI
for getting the license in case the library did not come with it.

Not that URIs cannot possibly change, but at least it's easier to
set up a redirection at the same place.

As a side note: this commit closes the oldes bug in Clutter's bug
report tool.

http://bugzilla.openedhand.com/show_bug.cgi?id=521
2010-03-01 12:56:10 +00:00
Emmanuele Bassi
c387513a5f color: Fix HLS-to-RGB conversion
Apparently, on 64bit systems the floating point noise is enough
to screw up the float-to-int truncation.

The solution is to round up by 0.5 and then use floorf(). This
gives predictable and correct results on both 32bit and 64bit
systems.
2009-10-26 16:29:31 +00:00
Emmanuele Bassi
4d481e03f3 color: Measure the string just once when parsing
Instead of measuring the color hexadecimal string for each case, just
measure it once and then use a switch() to go to the right case.
2009-10-07 13:00:57 +01:00
Thomas Wood
c7d50083ec [color] allow alpha to be omitted when converting to color from string
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.
2009-10-07 12:56:01 +01:00
Thomas Wood
142f886518 Revert "[color] allow alpha to omitted when converting from strings"
This reverts commit eb8daac4b0.

The original commit was incorrect and pushed accidentally.
2009-10-07 12:15:26 +01:00
Thomas Wood
bdf7499207 [color] add a note to the documentation to specify the values of the alpha
The alpha channel is fully opaque at 255 and fully transparent at 0.
2009-10-07 11:40:41 +01:00
Thomas Wood
eb8daac4b0 [color] allow alpha to omitted when converting from strings
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.
2009-10-07 11:38:08 +01:00
Emmanuele Bassi
ad7dcc9896 [color] Fix HLS to RGB colorspace conversion
The HLS to RGB conversion in case the S value is zero is:

  R = G = B = luminance

ClutterColor uses a byte (0 to 255) for the R, G and B channels
encoding, while luminance is expressed using a floating point value
in the closed interval [0, 1]; thus the case above becomes:

  R = G = B = (luminance * 255)

The clutter_color_from_hls() code is missing the final step of
de-normalizing the luminance value, and so it breaks the roundtrip
colorspace conversion between RGB and HLS.

Fixes bug:

  http://bugzilla.openedhand.com/show_bug.cgi?id=1695
2009-07-27 12:04:40 +01:00
Robert Staudinger
bd13a4ddc4 [color] Add support for the "#rgba" color format
clutter_color_from_string() only supported the "#rrggbbaa" format with
alpha channel, this patch adds support for "#rgba".

Colors in "#rrggbb" format were parsed manually, this is now left to
the pango color parsing fallback, since that's handling it just fine.

Signed-off-by: Emmanuele Bassi <ebassi@linux.intel.com>
2009-06-01 18:42:28 +01:00
Emmanuele Bassi
ccca24ab76 Remove usage of the grave accent as quotation mark
See:

  http://www.cl.cam.ac.uk/~mgk25/ucs/quotes.html

This should make Thomas happy.
2009-03-17 14:13:31 +00:00
Robert Bragg
bb93a98762 [clutter-color] Use a different hls->rgb algorithm + use floating point
Using test-cogl-vertex-buffer as a test case which is CPU bound due to
hls -> rgb conversions this alternative algorithm looked to be ~10%
faster when tested on an X61s Lenovo.
2009-03-17 11:37:29 +00:00
Emmanuele Bassi
e430903acd [color] Fixed HLS to RGB conversion
The fixed-point values are converted to integers, which obviously
messes up the conversion. Instead, they should be converted to
floating point values before normalizing to bytes for the assignment
to ClutterColor components.
2009-03-11 13:58:31 +00:00
Emmanuele Bassi
7d674db9d2 Clean up of the ClutterColor API
The ClutterColor API has some inconsistencies:

  - the string deserialization function does not match the rest of
    the conversion function naming policy; the naming should be:

        clutter_color_parse()   ->      clutter_color_from_string()

    and the first parameter should be the ClutterColor that will
    be set from the string, not the string itself (a GDK-ism).

  - the fixed point API should not be exposed, especially in the
    form of ClutterFixed values

  - the non-fixed point HLS conversion functions do not make any
    sense. The values returned should be:

      hue        := range [ 0, 360 ]
      luminance  := range [ 0,   1 ]
      saturation := range [ 0,   1 ]

    like the current fixed point API does. Returning a value in
    the [ 0, 255 ] range is completely useless

  - the clutter_color_equal() should be converted for its use inside
    a GHashTable; a clutter_color_hash() should be added as well

  - the second parameter of the clutter_color_shade() function should
    be the shading factor, not the result (another GDK-ism). this way
    the function call can be translated from this:

      color.shade(out result, factor)

    to the more natural:

      color.shade(factor, out result)

This somewhat large commit fixes all these issues and updates the
internal users of the API.
2009-03-10 12:38:02 +00:00
Owen W. Taylor
c5afd98416 Add gobject-introspection annotations
Add annotations such as (transfer-none) (out) (element-type ClutterActor),
and so forth to the doc comments as appropriate.

The annotations added here are a combination of the annotations previously
in gir-repository for Clutter and annotations found in a review of all
return values with that were being parsed with a transfer of "full".

http://bugzilla.openedhand.com/show_bug.cgi?id=1452

Signed-off-by: Emmanuele Bassi <ebassi@linux.intel.com>
2009-02-20 12:09:07 +00:00
Neil Roberts
97431b4670 Replaced ClutterFixed constants in color_{darken,lighten} with float
Bug 1463 - clutter_color_lighten(darken) unexpected because of
           ClutterFixed=>float

These two functions contained ClutterFixed constants represented as
integers which are no longer valid since the cogl-float branch
merge. They are now converted to ClutterFixed from float constants
using CLUTTER_FLOAT_TO_FIXED (which is now a no-op).

Thanks to Zhang Wei for reporting.
2009-02-20 11:07:23 +00:00
Robert Bragg
e82f656590 [Automatic fixed-to-float.sh change] Applies all scripted changes
This is the result of running a number of sed and perl scripts over the code to
do 90% of the work in converting from 16.16 fixed to single precision floating
point.

Note: A pristine cogl-fixed.c has been maintained as a standalone utility API
      so that applications may still take advantage of fixed point if they
      desire for certain optimisations where lower precision may be acceptable.

Note: no API changes were made in Clutter, only in Cogl.

Overview of changes:
- Within clutter/* all usage of the COGL_FIXED_ macros have been changed to use
the CLUTTER_FIXED_ macros.

- Within cogl/* all usage of the COGL_FIXED_ macros have been completly stripped
and expanded into code that works with single precision floats instead.

- Uses of cogl_fixed_* have been replaced with single precision math.h
alternatives.

- Uses of COGL_ANGLE_* and cogl_angle_* have been replaced so we use a float for
angles and math.h replacements.
2009-01-20 16:20:54 +00:00
Neil Roberts
e6570be339 * clutter/clutter-color.c (clutter_color_new): Remove CLAMP macros
around the component parameters because they are guint8 anyway so
	the CLAMP is redundant and it causes a warning.
2008-11-05 12:16:15 +00:00
Thomas Wood
33c03448e5 2008-11-04 Thomas Wood <thomas@linux.intel.com>
* clutter/clutter-color.c: Update ClutterColor documentation as
	changes have been backported to 0.8.4.
2008-11-04 17:52:29 +00:00
Emmanuele Bassi
911b395c8a 2008-10-30 Emmanuele Bassi <ebassi@linux.intel.com>
Bug 1209 - Move fixed point API in COGL

	* clutter/cogl/cogl-fixed.h:
	* clutter/cogl/cogl.h.in:
	* clutter/cogl/common/Makefile.am:
	* clutter/cogl/common/cogl-fixed.c: Add fixed point API, modelled
	after the ClutterFixed. The CoglFixed API supercedes the ClutterFixed
	one and avoids the dependency of COGL on Clutter's own API.

	* clutter/cogl/common/cogl-clip-stack.c:
	* clutter/cogl/common/cogl-primitives.c:
	* clutter/cogl/common/cogl-primitives.h: Update internal usage of
	ClutterFixed to CoglFixed.

	* clutter/cogl/gl/Makefile.am:
	* clutter/cogl/gl/cogl-primitives.c:
	* clutter/cogl/gl/cogl-texture.c:
	* clutter/cogl/gl/cogl.c: Ditto, in the GL implementation of the
	COGL API.

	* clutter/cogl/gles/Makefile.am:
	* clutter/cogl/gles/cogl-fbo.c:
	* clutter/cogl/gles/cogl-gles2-wrapper.c:
	* clutter/cogl/gles/cogl-primitives.c:
	* clutter/cogl/gles/cogl-texture.c:
	* clutter/cogl/gles/cogl.c: Ditto, in the GLES implementation of
	the COGL API.

	* clutter/pango/pangoclutter-glyph-cache.c:
	* clutter/pango/pangoclutter-glyph-cache.h: Ditto, in the Pango
	renderer glyphs cache.

	* clutter/clutter-fixed.c:
	* clutter/clutter-fixed.h: ClutterFixed and related API becomes
	a simple transition API for bindings and public Clutter API.

	* clutter/clutter-actor.c:
	* clutter/clutter-alpha.c:
	* clutter/clutter-backend.c:
	* clutter/clutter-behaviour-depth.c:
	* clutter/clutter-behaviour-ellipse.c:
	* clutter/clutter-behaviour-path.c:
	* clutter/clutter-behaviour-rotate.c:
	* clutter/clutter-behaviour-scale.c:
	* clutter/clutter-clone-texture.c:
	* clutter/clutter-color.c:
	* clutter/clutter-entry.c:
	* clutter/clutter-stage.c:
	* clutter/clutter-texture.c:
	* clutter/clutter-timeline.c:
	* clutter/clutter-units.h: Move from the internal usage of
	ClutterFixed to CoglFixed.

	* doc/reference/clutter/clutter-sections.txt:
	* doc/reference/cogl/cogl-docs.sgml:
	* doc/reference/cogl/cogl-sections.txt: Update the documentation.

	* tests/test-cogl-tex-tile.c:
	* tests/test-project.c: Fix tests after the API change

	* README: Add release notes.
2008-10-30 16:37:55 +00:00
Thomas Wood
15af9b9b48 * clutter/clutter-color.c (param_color_set_default): Set the no copy
flag when setting the default param spec value to prevent invalid
	frees.
2008-10-28 11:45:04 +00:00
Emmanuele Bassi
3ced5a9086 2008-10-21 Emmanuele Bassi <ebassi@linux.intel.com>
* clutter/clutter-color.[ch] (clutter_value_set_color): Constify
	colors and values where needed.
2008-10-21 18:50:44 +00:00
Emmanuele Bassi
8f1819cd52 2008-10-17 Thomas Wood <thomas@linux.intel.com>
reviewed by: Emmanuele Bassi <ebassi@linux.intel.com>

	* clutter/clutter-color.[ch]: Add GParamSpec and GValue integration
	for ClutterColor. With ClutterParamSpecColor it is possible to define
	color properties; with the GValue integration it's possible to
	automatically transform strings into colors and vice versa.

	(clutter_color_free): Allow NULL parameter to match other boxed
	types destructors.

	(clutter_color_new): Add a constructor for the ClutterColor boxed
	type, mostly for bindings.
2008-10-17 16:23:46 +00:00
Emmanuele Bassi
9cf5386bb1 2008-10-17 Emmanuele Bassi <ebassi@linux.intel.com>
* clutter/clutter-color.c (clutter_color_parse): Add checks
	for the arguments, to avoid trying to parse NULL strings.
2008-10-17 08:04:03 +00:00
Emmanuele Bassi
f20cfeadb4 2008-05-28 Emmanuele Bassi <ebassi@openedhand.com>
Bug #919 - Replacement pango renderer (Neil Roberts)

	* clutter/clutter-backend.h:
	* clutter/clutter-backend.c:
	(clutter_backend_set_font_options),
	(clutter_backend_get_font_options): Add the ability to set
	the cairo_font_options_t* for the backend at construction
	time, so that backend implementations can have their own
	options.

	* clutter/clutter-color.c: Include pango/pango-attributes.h
	for the pango_color_parse() function.

	* clutter/clutter-label.c:
	(clutter_label_ensure_layout),
	(clutter_label_init), (clutter_label_set_text),
	(clutter_label_set_font_name), (clutter_label_set_ellipsize),
	(clutter_label_set_use_markup): Ensure that the cache is
	always primed when the Label changes; this makes sure that
	the cache is rebuilt outside the paint run, which should
	make the painting perform better especially on embedded
	devices.

	* clutter/clutter-entry.c:
	(clutter_entry_ensure_layout),
	(clutter_entry_init), (clutter_entry_set_text),
	(clutter_entry_set_font_name): Ditto as above.

	* clutter/clutter-private.h:
	* clutter/clutter-main.[ch]: Create the font-map inside the
	main context; add two new functions:

	  clutter_clear_glyph_cache()
	  clutter_set_use_mipmapped_text()

	that control the glyphs cache.

	* clutter/pango/Makefile.am:
	* clutter/pango/pangoclutter-fontmap.c:
	* clutter/pango/pangoclutter-private.h:
	* clutter/pango/pangoclutter-render.c:
	* clutter/pango/pangoclutter.h: Rewrite the Pango renderer
	using a PangoCairo context and saving the glyphs inside a
	more efficient cache.

	* configure.ac: Depend on pangocairo instead of pangoft2.
2008-05-28 14:03:28 +00:00
Emmanuele Bassi
87a9232d8a 2007-12-24 Emmanuele Bassi <ebassi@openedhand.com>
* clutter/clutter-color.c:
	* clutter/clutter-event.c:
	* clutter/clutter-stage.c: Intern more strings using the I_() macro

	* clutter/clutter-enum-types.c.in: Call g_intern_static_string()
	in the enum types template
2007-12-24 14:52:41 +00:00
Emmanuele Bassi
f36bee599c 2007-10-27 Emmanuele Bassi <ebassi@openedhand.com>
* clutter/clutter-color.c (clutter_color_to_string): Update the
	documentation for the format of the returned string, and remove
	the note: now clutter_color_parse() can parse the string this
	function returns.
2007-10-27 12:14:18 +00:00
Emmanuele Bassi
509799fa0c Change the clutter_color_from_string() format
The format should be "%02x%02x%02x%02x" because we use guint8 for each
component, and not guint16. The string before was completely broken.
2007-10-22 15:46:56 +00:00
Emmanuele Bassi
5737a8b79a 2007-10-16 Emmanuele bassi <ebassi@openedhand.com>
* clutter/clutter-color.c: Copy the alpha when shading.
2007-10-16 09:39:15 +00:00
Tomas Frydrych
5b4b51ba7a 2007-10-01 Tomas Frydrych <tf@openedhand.com>
* clutter/clutter-actor.c:
	(clutter_actor_set_scale_with_gravityx):
	Use CLUTTER_QMUL for better precission (#532, patch by Gwenole
	Beauchesne).

	* clutter/clutter-color.c:
	(clutter_color_to_hlsx):
	Added missing CLUTTER_INT_TO_FIXED conversion (#544, patch by Neil
	Roberts).
2007-10-01 15:26:09 +00:00
Emmanuele Bassi
337571a805 2007-08-02 Emmanuele Bassi <ebassi@openedhand.com>
* clutter/clutter-color.c (clutter_color_subtract): Invert the
	operands and match what the function says it does.
2007-08-02 07:40:58 +00:00
Matthew Allum
a6a998e4d8 2007-08-01 Matthew Allum <mallum@openedhand.com>
* clutter/clutter-color.c: (clutter_color_from_pixel):
        Fix typo in alpha channel extraction (#434)
2007-08-01 22:09:33 +00:00
Matthew Allum
a64b6b7ee7 2007-05-25 Matthew Allum <mallum@openedhand.com>
* clutter/clutter-color.c: (clutter_color_parse):
        Handle #rrggbbaa color setting strings (i.e with alpha).
        Set alpha to 0xff if it is not specified.

        * clutter/clutter-stage.c: (clutter_stage_get_actor_at_pos)
        Increase select buffer.

        * examples/super-oh.c:
        Fix up use of clutter_group_show_all()
2007-05-25 16:35:57 +00:00