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a73ae93d59
Since they are all refer to the days clutter used to be a separate library Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2441>
200 lines
7.2 KiB
C
200 lines
7.2 KiB
C
/*
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* Clutter.
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*
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* An OpenGL based 'interactive canvas' library.
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*
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* Authored By: Matthew Allum <mallum@openedhand.com>
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* Emmanuele Bassi <ebassi@linux.intel.com>
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*
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* Copyright (C) 2006, 2007, 2008 OpenedHand
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* Copyright (C) 2009 Intel Corp.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __CLUTTER_COLOR_H__
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#define __CLUTTER_COLOR_H__
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#if !defined(__CLUTTER_H_INSIDE__) && !defined(CLUTTER_COMPILATION)
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#error "Only <clutter/clutter.h> can be included directly."
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#endif
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#include <clutter/clutter-types.h>
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G_BEGIN_DECLS
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#define CLUTTER_TYPE_COLOR (clutter_color_get_type ())
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/**
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* ClutterColor:
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* @red: red component, between 0 and 255
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* @green: green component, between 0 and 255
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* @blue: blue component, between 0 and 255
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* @alpha: alpha component, between 0 and 255
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*
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* A simple type for representing colors.
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*
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* A #ClutterColor is expressed as a 4-tuple of values ranging from
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* zero to 255, one for each color channel plus one for the alpha.
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*
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* The alpha channel is fully opaque at 255 and fully transparent at 0.
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*/
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struct _ClutterColor
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{
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/*< public >*/
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guint8 red;
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guint8 green;
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guint8 blue;
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guint8 alpha;
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};
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/**
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* CLUTTER_COLOR_INIT:
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* @r: value for the red channel, between 0 and 255
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* @g: value for the green channel, between 0 and 255
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* @b: value for the blue channel, between 0 and 255
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* @a: value for the alpha channel, between 0 and 255
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*
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* A macro that initializes a #ClutterColor, to be used when declaring it.
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*/
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#define CLUTTER_COLOR_INIT(r,g,b,a) { (r), (g), (b), (a) }
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CLUTTER_EXPORT
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GType clutter_color_get_type (void) G_GNUC_CONST;
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CLUTTER_EXPORT
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ClutterColor *clutter_color_new (guint8 red,
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guint8 green,
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guint8 blue,
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guint8 alpha);
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CLUTTER_EXPORT
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ClutterColor *clutter_color_alloc (void);
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CLUTTER_EXPORT
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ClutterColor *clutter_color_init (ClutterColor *color,
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guint8 red,
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guint8 green,
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guint8 blue,
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guint8 alpha);
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CLUTTER_EXPORT
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ClutterColor *clutter_color_copy (const ClutterColor *color);
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CLUTTER_EXPORT
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void clutter_color_free (ClutterColor *color);
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CLUTTER_EXPORT
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void clutter_color_add (const ClutterColor *a,
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const ClutterColor *b,
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ClutterColor *result);
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CLUTTER_EXPORT
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void clutter_color_subtract (const ClutterColor *a,
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const ClutterColor *b,
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ClutterColor *result);
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CLUTTER_EXPORT
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void clutter_color_lighten (const ClutterColor *color,
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ClutterColor *result);
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CLUTTER_EXPORT
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void clutter_color_darken (const ClutterColor *color,
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ClutterColor *result);
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CLUTTER_EXPORT
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void clutter_color_shade (const ClutterColor *color,
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gdouble factor,
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ClutterColor *result);
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CLUTTER_EXPORT
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gchar * clutter_color_to_string (const ClutterColor *color);
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CLUTTER_EXPORT
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gboolean clutter_color_from_string (ClutterColor *color,
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const gchar *str);
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CLUTTER_EXPORT
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void clutter_color_to_hls (const ClutterColor *color,
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gfloat *hue,
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gfloat *luminance,
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gfloat *saturation);
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CLUTTER_EXPORT
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void clutter_color_from_hls (ClutterColor *color,
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gfloat hue,
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gfloat luminance,
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gfloat saturation);
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CLUTTER_EXPORT
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guint32 clutter_color_to_pixel (const ClutterColor *color);
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CLUTTER_EXPORT
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void clutter_color_from_pixel (ClutterColor *color,
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guint32 pixel);
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CLUTTER_EXPORT
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guint clutter_color_hash (gconstpointer v);
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CLUTTER_EXPORT
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gboolean clutter_color_equal (gconstpointer v1,
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gconstpointer v2);
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CLUTTER_EXPORT
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void clutter_color_interpolate (const ClutterColor *initial,
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const ClutterColor *final,
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gdouble progress,
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ClutterColor *result);
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#define CLUTTER_TYPE_PARAM_COLOR (clutter_param_color_get_type ())
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#define CLUTTER_PARAM_SPEC_COLOR(pspec) (G_TYPE_CHECK_INSTANCE_CAST ((pspec), CLUTTER_TYPE_PARAM_COLOR, ClutterParamSpecColor))
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#define CLUTTER_IS_PARAM_SPEC_COLOR(pspec) (G_TYPE_CHECK_INSTANCE_TYPE ((pspec), CLUTTER_TYPE_PARAM_COLOR))
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/**
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* CLUTTER_VALUE_HOLDS_COLOR:
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* @x: a #GValue
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*
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* Evaluates to %TRUE if @x holds a `ClutterColor`.
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*/
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#define CLUTTER_VALUE_HOLDS_COLOR(x) (G_VALUE_HOLDS ((x), CLUTTER_TYPE_COLOR))
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typedef struct _ClutterParamSpecColor ClutterParamSpecColor;
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/**
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* ClutterParamSpecColor: (skip)
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* @default_value: default color value
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*
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* A #GParamSpec subclass for defining properties holding
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* a #ClutterColor.
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*/
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struct _ClutterParamSpecColor
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{
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/*< private >*/
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GParamSpec parent_instance;
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/*< public >*/
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ClutterColor *default_value;
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};
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CLUTTER_EXPORT
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void clutter_value_set_color (GValue *value,
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const ClutterColor *color);
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CLUTTER_EXPORT
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const ClutterColor * clutter_value_get_color (const GValue *value);
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CLUTTER_EXPORT
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GType clutter_param_color_get_type (void) G_GNUC_CONST;
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CLUTTER_EXPORT
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GParamSpec * clutter_param_spec_color (const gchar *name,
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const gchar *nick,
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const gchar *blurb,
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const ClutterColor *default_value,
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GParamFlags flags);
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CLUTTER_EXPORT
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const ClutterColor *clutter_color_get_static (ClutterStaticColor color);
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G_END_DECLS
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#endif /* __CLUTTER_COLOR_H__ */
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