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/*
* Copyright © 2012 Red Hat Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
* Authors: Alexander Larsson <alexl@gnome.org>
*/
#pragma once
#include <glib-object.h>
#include "gtkcsstypesprivate.h"
#include "gtkcssvariablesetprivate.h"
#include "gtkstyleprovider.h"
G_BEGIN_DECLS
#define GTK_TYPE_CSS_VALUE (gtk_css_value_get_type ())
/* A GtkCssValue is a refcounted immutable value type */
typedef struct _GtkCssValue GtkCssValue;
typedef struct _GtkCssValueClass GtkCssValueClass;
/* using define instead of struct here so compilers get the packing right */
#define GTK_CSS_VALUE_BASE \
const GtkCssValueClass *class; \
int ref_count; \
guint is_computed: 1; \
guint contains_variables: 1; \
guint contains_current_color: 1;
typedef struct {
GtkStyleProvider *provider;
GtkCssStyle *style;
GtkCssStyle *parent_style;
GtkCssVariableSet *variables;
GtkCssValue **shorthands;
} GtkCssComputeContext;
struct _GtkCssValueClass {
const char *type_name;
void (* free) (GtkCssValue *value);
GtkCssValue * (* compute) (GtkCssValue *value,
guint property_id,
GtkCssComputeContext *context);
GtkCssValue * (* resolve) (GtkCssValue *value,
GtkCssComputeContext *context,
GtkCssValue *current);
gboolean (* equal) (const GtkCssValue *value1,
const GtkCssValue *value2);
GtkCssValue * (* transition) (GtkCssValue *start,
GtkCssValue *end,
guint property_id,
double progress);
gboolean (* is_dynamic) (const GtkCssValue *value);
GtkCssValue * (* get_dynamic_value) (GtkCssValue *value,
gint64 monotonic_time);
void (* print) (const GtkCssValue *value,
GString *string);
};
GType gtk_css_value_get_type (void) G_GNUC_CONST;
GtkCssValue * gtk_css_value_alloc (const GtkCssValueClass *klass,
gsize size);
#define gtk_css_value_new(name, klass) ((name *) gtk_css_value_alloc ((klass), sizeof (name)))
GtkCssValue * (gtk_css_value_ref) (GtkCssValue *value);
void (gtk_css_value_unref) (GtkCssValue *value);
GtkCssValue * gtk_css_value_compute (GtkCssValue *value,
guint property_id,
GtkCssComputeContext *context) G_GNUC_PURE;
GtkCssValue * gtk_css_value_resolve (GtkCssValue *value,
GtkCssComputeContext *context,
GtkCssValue *current) G_GNUC_PURE;
gboolean gtk_css_value_equal (const GtkCssValue *value1,
const GtkCssValue *value2) G_GNUC_PURE;
gboolean gtk_css_value_equal0 (const GtkCssValue *value1,
const GtkCssValue *value2) G_GNUC_PURE;
GtkCssValue * gtk_css_value_transition (GtkCssValue *start,
GtkCssValue *end,
guint property_id,
double progress);
gboolean gtk_css_value_is_dynamic (const GtkCssValue *value) G_GNUC_PURE;
GtkCssValue * gtk_css_value_get_dynamic_value (GtkCssValue *value,
gint64 monotonic_time);
char * gtk_css_value_to_string (const GtkCssValue *value);
void gtk_css_value_print (const GtkCssValue *value,
GString *string);
typedef struct { GTK_CSS_VALUE_BASE } GtkCssValueBase;
static inline GtkCssValue *
gtk_css_value_ref_inline (GtkCssValue *value)
{
GtkCssValueBase *value_base = (GtkCssValueBase *) value;
value_base->ref_count += 1;
return value;
}
static inline void
gtk_css_value_unref_inline (GtkCssValue *value)
{
GtkCssValueBase *value_base = (GtkCssValueBase *) value;
if (value_base && value_base->ref_count > 1)
{
value_base->ref_count -= 1;
return;
}
(gtk_css_value_unref) (value);
}
#define gtk_css_value_ref(value) gtk_css_value_ref_inline (value)
#define gtk_css_value_unref(value) gtk_css_value_unref_inline (value)
static inline gboolean
gtk_css_value_is_computed (const GtkCssValue *value)
{
GtkCssValueBase *value_base = (GtkCssValueBase *) value;
return value_base->is_computed;
}
static inline gboolean
gtk_css_value_contains_variables (const GtkCssValue *value)
{
GtkCssValueBase *value_base = (GtkCssValueBase *) value;
return value_base->contains_variables;
}
static inline gboolean
gtk_css_value_contains_current_color (const GtkCssValue *value)
{
GtkCssValueBase *value_base = (GtkCssValueBase *) value;
return value_base->contains_current_color;
}
G_END_DECLS
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