forked from AuroraMiddleware/gtk
166 lines
4.9 KiB
C
166 lines
4.9 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 2016 Benjamin Otte <otte@gnome.org>
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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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#include "config.h"
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#include "gtkcssnumbervalueprivate.h"
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#include "gtkcsscalcvalueprivate.h"
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#include "gtkcssdimensionvalueprivate.h"
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#include "gtkcsswin32sizevalueprivate.h"
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struct _GtkCssValue {
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GTK_CSS_VALUE_BASE
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};
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GtkCssDimension
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gtk_css_number_value_get_dimension (const GtkCssValue *value)
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{
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GtkCssNumberValueClass *number_value_class = (GtkCssNumberValueClass *) value->class;
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return number_value_class->get_dimension (value);
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}
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gboolean
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gtk_css_number_value_has_percent (const GtkCssValue *value)
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{
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GtkCssNumberValueClass *number_value_class = (GtkCssNumberValueClass *) value->class;
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return number_value_class->has_percent (value);
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}
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GtkCssValue *
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gtk_css_number_value_multiply (const GtkCssValue *value,
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double factor)
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{
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GtkCssNumberValueClass *number_value_class = (GtkCssNumberValueClass *) value->class;
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return number_value_class->multiply (value, factor);
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}
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GtkCssValue *
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gtk_css_number_value_add (GtkCssValue *value1,
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GtkCssValue *value2)
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{
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GtkCssValue *sum;
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sum = gtk_css_number_value_try_add (value1, value2);
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if (sum == NULL)
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sum = gtk_css_calc_value_new_sum (value1, value2);
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return sum;
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}
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GtkCssValue *
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gtk_css_number_value_try_add (const GtkCssValue *value1,
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const GtkCssValue *value2)
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{
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GtkCssNumberValueClass *number_value_class;
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if (value1->class != value2->class)
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return NULL;
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number_value_class = (GtkCssNumberValueClass *) value1->class;
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return number_value_class->try_add (value1, value2);
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}
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/*
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* gtk_css_number_value_get_calc_term_order:
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* @value: Value to compute order for
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*
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* Determines the position of @value when printed as part of a calc()
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* expression. Values with lower numbers are printed first. Note that
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* these numbers are arbitrary, so when adding new types of values to
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* print, feel free to change them in implementations so that they
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* match.
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*
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* Returns: Magic value determining placement when printing calc()
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* expression.
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*/
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gint
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gtk_css_number_value_get_calc_term_order (const GtkCssValue *value)
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{
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GtkCssNumberValueClass *number_value_class = (GtkCssNumberValueClass *) value->class;
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return number_value_class->get_calc_term_order (value);
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}
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GtkCssValue *
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_gtk_css_number_value_new (double value,
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GtkCssUnit unit)
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{
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return gtk_css_dimension_value_new (value, unit);
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}
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GtkCssValue *
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gtk_css_number_value_transition (GtkCssValue *start,
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GtkCssValue *end,
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guint property_id,
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double progress)
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{
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GtkCssValue *result, *mul_start, *mul_end;
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mul_start = gtk_css_number_value_multiply (start, 1 - progress);
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mul_end = gtk_css_number_value_multiply (end, progress);
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result = gtk_css_number_value_add (mul_start, mul_end);
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_gtk_css_value_unref (mul_start);
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_gtk_css_value_unref (mul_end);
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return result;
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}
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gboolean
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gtk_css_number_value_can_parse (GtkCssParser *parser)
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{
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return _gtk_css_parser_has_number (parser)
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|| _gtk_css_parser_has_prefix (parser, "calc")
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|| _gtk_css_parser_has_prefix (parser, "-gtk-win32-size")
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|| _gtk_css_parser_has_prefix (parser, "-gtk-win32-part-width")
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|| _gtk_css_parser_has_prefix (parser, "-gtk-win32-part-height");
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}
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GtkCssValue *
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_gtk_css_number_value_parse (GtkCssParser *parser,
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GtkCssNumberParseFlags flags)
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{
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if (_gtk_css_parser_has_prefix (parser, "calc"))
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return gtk_css_calc_value_parse (parser, flags);
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if (_gtk_css_parser_has_prefix (parser, "-gtk-win32-size") ||
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_gtk_css_parser_has_prefix (parser, "-gtk-win32-part-width") ||
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_gtk_css_parser_has_prefix (parser, "-gtk-win32-part-height"))
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return gtk_css_win32_size_value_parse (parser, flags);
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return gtk_css_dimension_value_parse (parser, flags);
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}
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double
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_gtk_css_number_value_get (const GtkCssValue *number,
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double one_hundred_percent)
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{
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GtkCssNumberValueClass *number_value_class;
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g_return_val_if_fail (number != NULL, 0.0);
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number_value_class = (GtkCssNumberValueClass *) number->class;
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return number_value_class->get (number, one_hundred_percent);
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}
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