1 /* GTK - The GIMP Toolkit
2 * Copyright (C) 2016 Benjamin Otte <otte@gnome.org>
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library. If not, see <http://www.gnu.org/licenses/>.
16 */
17
18 #include "config.h"
19
20 #include "gtkcssnumbervalueprivate.h"
21
22 #include "gtkcsscalcvalueprivate.h"
23 #include "gtkcssdimensionvalueprivate.h"
24 #include "gtkcsswin32sizevalueprivate.h"
25
26 struct _GtkCssValue {
27 GTK_CSS_VALUE_BASE
28 };
29
30 GtkCssDimension
gtk_css_number_value_get_dimension(const GtkCssValue * value)31 gtk_css_number_value_get_dimension (const GtkCssValue *value)
32 {
33 GtkCssNumberValueClass *number_value_class = (GtkCssNumberValueClass *) value->class;
34
35 return number_value_class->get_dimension (value);
36 }
37
38 gboolean
gtk_css_number_value_has_percent(const GtkCssValue * value)39 gtk_css_number_value_has_percent (const GtkCssValue *value)
40 {
41 GtkCssNumberValueClass *number_value_class = (GtkCssNumberValueClass *) value->class;
42
43 return number_value_class->has_percent (value);
44 }
45
46 GtkCssValue *
gtk_css_number_value_multiply(const GtkCssValue * value,double factor)47 gtk_css_number_value_multiply (const GtkCssValue *value,
48 double factor)
49 {
50 GtkCssNumberValueClass *number_value_class = (GtkCssNumberValueClass *) value->class;
51
52 return number_value_class->multiply (value, factor);
53 }
54
55 GtkCssValue *
gtk_css_number_value_add(GtkCssValue * value1,GtkCssValue * value2)56 gtk_css_number_value_add (GtkCssValue *value1,
57 GtkCssValue *value2)
58 {
59 GtkCssValue *sum;
60
61 sum = gtk_css_number_value_try_add (value1, value2);
62 if (sum == NULL)
63 sum = gtk_css_calc_value_new_sum (value1, value2);
64
65 return sum;
66 }
67
68 GtkCssValue *
gtk_css_number_value_try_add(const GtkCssValue * value1,const GtkCssValue * value2)69 gtk_css_number_value_try_add (const GtkCssValue *value1,
70 const GtkCssValue *value2)
71 {
72 GtkCssNumberValueClass *number_value_class;
73
74 if (value1->class != value2->class)
75 return NULL;
76
77 number_value_class = (GtkCssNumberValueClass *) value1->class;
78
79 return number_value_class->try_add (value1, value2);
80 }
81
82 /*
83 * gtk_css_number_value_get_calc_term_order:
84 * @value: Value to compute order for
85 *
86 * Determines the position of @value when printed as part of a calc()
87 * expression. Values with lower numbers are printed first. Note that
88 * these numbers are arbitrary, so when adding new types of values to
89 * print, feel free to change them in implementations so that they
90 * match.
91 *
92 * Returns: Magic value determining placement when printing calc()
93 * expression.
94 */
95 gint
gtk_css_number_value_get_calc_term_order(const GtkCssValue * value)96 gtk_css_number_value_get_calc_term_order (const GtkCssValue *value)
97 {
98 GtkCssNumberValueClass *number_value_class = (GtkCssNumberValueClass *) value->class;
99
100 return number_value_class->get_calc_term_order (value);
101 }
102
103 GtkCssValue *
_gtk_css_number_value_new(double value,GtkCssUnit unit)104 _gtk_css_number_value_new (double value,
105 GtkCssUnit unit)
106 {
107 return gtk_css_dimension_value_new (value, unit);
108 }
109
110 GtkCssValue *
gtk_css_number_value_transition(GtkCssValue * start,GtkCssValue * end,guint property_id,double progress)111 gtk_css_number_value_transition (GtkCssValue *start,
112 GtkCssValue *end,
113 guint property_id,
114 double progress)
115 {
116 GtkCssValue *result, *mul_start, *mul_end;
117
118 mul_start = gtk_css_number_value_multiply (start, 1 - progress);
119 mul_end = gtk_css_number_value_multiply (end, progress);
120
121 result = gtk_css_number_value_add (mul_start, mul_end);
122
123 _gtk_css_value_unref (mul_start);
124 _gtk_css_value_unref (mul_end);
125
126 return result;
127 }
128
129 gboolean
gtk_css_number_value_can_parse(GtkCssParser * parser)130 gtk_css_number_value_can_parse (GtkCssParser *parser)
131 {
132 return _gtk_css_parser_has_number (parser)
133 || _gtk_css_parser_has_prefix (parser, "calc")
134 || _gtk_css_parser_has_prefix (parser, "-gtk-win32-size")
135 || _gtk_css_parser_has_prefix (parser, "-gtk-win32-part-width")
136 || _gtk_css_parser_has_prefix (parser, "-gtk-win32-part-height")
137 || _gtk_css_parser_has_prefix (parser, "-gtk-win32-part-border-top")
138 || _gtk_css_parser_has_prefix (parser, "-gtk-win32-part-border-left")
139 || _gtk_css_parser_has_prefix (parser, "-gtk-win32-part-border-bottom")
140 || _gtk_css_parser_has_prefix (parser, "-gtk-win32-part-border-right");
141 }
142
143 GtkCssValue *
_gtk_css_number_value_parse(GtkCssParser * parser,GtkCssNumberParseFlags flags)144 _gtk_css_number_value_parse (GtkCssParser *parser,
145 GtkCssNumberParseFlags flags)
146 {
147 if (_gtk_css_parser_has_prefix (parser, "calc"))
148 return gtk_css_calc_value_parse (parser, flags);
149 if (_gtk_css_parser_has_prefix (parser, "-gtk-win32-size") ||
150 _gtk_css_parser_has_prefix (parser, "-gtk-win32-part-width") ||
151 _gtk_css_parser_has_prefix (parser, "-gtk-win32-part-height") ||
152 _gtk_css_parser_has_prefix (parser, "-gtk-win32-part-border-top") ||
153 _gtk_css_parser_has_prefix (parser, "-gtk-win32-part-border-left") ||
154 _gtk_css_parser_has_prefix (parser, "-gtk-win32-part-border-bottom") ||
155 _gtk_css_parser_has_prefix (parser, "-gtk-win32-part-border-right"))
156 return gtk_css_win32_size_value_parse (parser, flags);
157
158 return gtk_css_dimension_value_parse (parser, flags);
159 }
160
161 double
_gtk_css_number_value_get(const GtkCssValue * number,double one_hundred_percent)162 _gtk_css_number_value_get (const GtkCssValue *number,
163 double one_hundred_percent)
164 {
165 GtkCssNumberValueClass *number_value_class;
166
167 g_return_val_if_fail (number != NULL, 0.0);
168
169 number_value_class = (GtkCssNumberValueClass *) number->class;
170
171 return number_value_class->get (number, one_hundred_percent);
172 }
173
174