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/* GTK - The GIMP Toolkit
* Copyright (C) 2016 Benjamin Otte <otte@gnome.org>
*
* 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 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/>.
*/
#include "config.h"
#include "gtkcssnumbervalueprivate.h"
#include "gtkcsscalcvalueprivate.h"
#include "gtkcssdimensionvalueprivate.h"
#include "gtkprivate.h"
struct _GtkCssValue {
GTK_CSS_VALUE_BASE
};
GtkCssDimension
gtk_css_number_value_get_dimension (const GtkCssValue *value)
{
GtkCssNumberValueClass *number_value_class = (GtkCssNumberValueClass *) value->class;
return number_value_class->get_dimension (value);
}
gboolean
gtk_css_number_value_has_percent (const GtkCssValue *value)
{
GtkCssNumberValueClass *number_value_class = (GtkCssNumberValueClass *) value->class;
return number_value_class->has_percent (value);
}
GtkCssValue *
gtk_css_number_value_multiply (const GtkCssValue *value,
double factor)
{
GtkCssNumberValueClass *number_value_class = (GtkCssNumberValueClass *) value->class;
return number_value_class->multiply (value, factor);
}
GtkCssValue *
gtk_css_number_value_add (GtkCssValue *value1,
GtkCssValue *value2)
{
GtkCssValue *sum;
sum = gtk_css_number_value_try_add (value1, value2);
if (sum == NULL)
sum = gtk_css_calc_value_new_sum (value1, value2);
return sum;
}
GtkCssValue *
gtk_css_number_value_try_add (const GtkCssValue *value1,
const GtkCssValue *value2)
{
GtkCssNumberValueClass *number_value_class;
if (value1->class != value2->class)
return NULL;
number_value_class = (GtkCssNumberValueClass *) value1->class;
return number_value_class->try_add (value1, value2);
}
/*
* gtk_css_number_value_get_calc_term_order:
* @value: Value to compute order for
*
* Determines the position of @value when printed as part of a calc()
* expression. Values with lower numbers are printed first. Note that
* these numbers are arbitrary, so when adding new types of values to
* print, feel free to change them in implementations so that they
* match.
*
* Returns: Magic value determining placement when printing calc()
* expression.
*/
gint
gtk_css_number_value_get_calc_term_order (const GtkCssValue *value)
{
GtkCssNumberValueClass *number_value_class = (GtkCssNumberValueClass *) value->class;
return number_value_class->get_calc_term_order (value);
}
GtkCssValue *
_gtk_css_number_value_new (double value,
GtkCssUnit unit)
{
return gtk_css_dimension_value_new (value, unit);
}
GtkCssValue *
gtk_css_number_value_transition (GtkCssValue *start,
GtkCssValue *end,
guint property_id,
double progress)
{
GtkCssValue *result, *mul_start, *mul_end;
mul_start = gtk_css_number_value_multiply (start, 1 - progress);
mul_end = gtk_css_number_value_multiply (end, progress);
result = gtk_css_number_value_add (mul_start, mul_end);
_gtk_css_value_unref (mul_start);
_gtk_css_value_unref (mul_end);
return result;
}
gboolean
gtk_css_number_value_can_parse (GtkCssParser *parser)
{
return gtk_css_parser_has_token (parser, GTK_CSS_TOKEN_SIGNED_NUMBER)
|| gtk_css_parser_has_token (parser, GTK_CSS_TOKEN_SIGNLESS_NUMBER)
|| gtk_css_parser_has_token (parser, GTK_CSS_TOKEN_SIGNED_INTEGER)
|| gtk_css_parser_has_token (parser, GTK_CSS_TOKEN_SIGNLESS_INTEGER)
|| gtk_css_parser_has_token (parser, GTK_CSS_TOKEN_PERCENTAGE)
|| gtk_css_parser_has_token (parser, GTK_CSS_TOKEN_SIGNED_INTEGER_DIMENSION)
|| gtk_css_parser_has_token (parser, GTK_CSS_TOKEN_SIGNLESS_INTEGER_DIMENSION)
|| gtk_css_parser_has_token (parser, GTK_CSS_TOKEN_DIMENSION)
|| gtk_css_parser_has_function (parser, "calc");
}
GtkCssValue *
_gtk_css_number_value_parse (GtkCssParser *parser,
GtkCssNumberParseFlags flags)
{
if (gtk_css_parser_has_function (parser, "calc"))
return gtk_css_calc_value_parse (parser, flags);
return gtk_css_dimension_value_parse (parser, flags);
}
double
_gtk_css_number_value_get (const GtkCssValue *number,
double one_hundred_percent)
{
GtkCssNumberValueClass *number_value_class;
gtk_internal_return_val_if_fail (number != NULL, 0.0);
number_value_class = (GtkCssNumberValueClass *) number->class;
return number_value_class->get (number, one_hundred_percent);
}
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