1 /* GTK - The GIMP Toolkit
2 * Copyright (C) 2011 Red Hat, Inc.
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 "gtkcsscornervalueprivate.h"
21
22 #include "gtkcssnumbervalueprivate.h"
23
24 struct _GtkCssValue {
25 GTK_CSS_VALUE_BASE
26 GtkCssValue *x;
27 GtkCssValue *y;
28 };
29
30 static void
gtk_css_value_corner_free(GtkCssValue * value)31 gtk_css_value_corner_free (GtkCssValue *value)
32 {
33 _gtk_css_value_unref (value->x);
34 _gtk_css_value_unref (value->y);
35
36 g_slice_free (GtkCssValue, value);
37 }
38
39 static GtkCssValue *
gtk_css_value_corner_compute(GtkCssValue * corner,guint property_id,GtkStyleProviderPrivate * provider,GtkCssStyle * style,GtkCssStyle * parent_style)40 gtk_css_value_corner_compute (GtkCssValue *corner,
41 guint property_id,
42 GtkStyleProviderPrivate *provider,
43 GtkCssStyle *style,
44 GtkCssStyle *parent_style)
45 {
46 GtkCssValue *x, *y;
47
48 x = _gtk_css_value_compute (corner->x, property_id, provider, style, parent_style);
49 y = _gtk_css_value_compute (corner->y, property_id, provider, style, parent_style);
50 if (x == corner->x && y == corner->y)
51 {
52 _gtk_css_value_unref (x);
53 _gtk_css_value_unref (y);
54 return _gtk_css_value_ref (corner);
55 }
56
57 return _gtk_css_corner_value_new (x, y);
58 }
59
60 static gboolean
gtk_css_value_corner_equal(const GtkCssValue * corner1,const GtkCssValue * corner2)61 gtk_css_value_corner_equal (const GtkCssValue *corner1,
62 const GtkCssValue *corner2)
63 {
64 return _gtk_css_value_equal (corner1->x, corner2->x)
65 && _gtk_css_value_equal (corner1->y, corner2->y);
66 }
67
68 static GtkCssValue *
gtk_css_value_corner_transition(GtkCssValue * start,GtkCssValue * end,guint property_id,double progress)69 gtk_css_value_corner_transition (GtkCssValue *start,
70 GtkCssValue *end,
71 guint property_id,
72 double progress)
73 {
74 GtkCssValue *x, *y;
75
76 x = _gtk_css_value_transition (start->x, end->x, property_id, progress);
77 if (x == NULL)
78 return NULL;
79 y = _gtk_css_value_transition (start->y, end->y, property_id, progress);
80 if (y == NULL)
81 {
82 _gtk_css_value_unref (x);
83 return NULL;
84 }
85
86 return _gtk_css_corner_value_new (x, y);
87 }
88
89 static void
gtk_css_value_corner_print(const GtkCssValue * corner,GString * string)90 gtk_css_value_corner_print (const GtkCssValue *corner,
91 GString *string)
92 {
93 _gtk_css_value_print (corner->x, string);
94 if (!_gtk_css_value_equal (corner->x, corner->y))
95 {
96 g_string_append_c (string, ' ');
97 _gtk_css_value_print (corner->y, string);
98 }
99 }
100
101 static const GtkCssValueClass GTK_CSS_VALUE_CORNER = {
102 gtk_css_value_corner_free,
103 gtk_css_value_corner_compute,
104 gtk_css_value_corner_equal,
105 gtk_css_value_corner_transition,
106 gtk_css_value_corner_print
107 };
108
109 GtkCssValue *
_gtk_css_corner_value_new(GtkCssValue * x,GtkCssValue * y)110 _gtk_css_corner_value_new (GtkCssValue *x,
111 GtkCssValue *y)
112 {
113 GtkCssValue *result;
114
115 result = _gtk_css_value_new (GtkCssValue, >K_CSS_VALUE_CORNER);
116 result->x = x;
117 result->y = y;
118
119 return result;
120 }
121
122 GtkCssValue *
_gtk_css_corner_value_parse(GtkCssParser * parser)123 _gtk_css_corner_value_parse (GtkCssParser *parser)
124 {
125 GtkCssValue *x, *y;
126
127 x = _gtk_css_number_value_parse (parser,
128 GTK_CSS_POSITIVE_ONLY
129 | GTK_CSS_PARSE_PERCENT
130 | GTK_CSS_NUMBER_AS_PIXELS
131 | GTK_CSS_PARSE_LENGTH);
132 if (x == NULL)
133 return NULL;
134
135 if (!gtk_css_number_value_can_parse (parser))
136 y = _gtk_css_value_ref (x);
137 else
138 {
139 y = _gtk_css_number_value_parse (parser,
140 GTK_CSS_POSITIVE_ONLY
141 | GTK_CSS_PARSE_PERCENT
142 | GTK_CSS_NUMBER_AS_PIXELS
143 | GTK_CSS_PARSE_LENGTH);
144 if (y == NULL)
145 {
146 _gtk_css_value_unref (x);
147 return NULL;
148 }
149 }
150
151 return _gtk_css_corner_value_new (x, y);
152 }
153
154 double
_gtk_css_corner_value_get_x(const GtkCssValue * corner,double one_hundred_percent)155 _gtk_css_corner_value_get_x (const GtkCssValue *corner,
156 double one_hundred_percent)
157 {
158 g_return_val_if_fail (corner != NULL, 0.0);
159 g_return_val_if_fail (corner->class == >K_CSS_VALUE_CORNER, 0.0);
160
161 return _gtk_css_number_value_get (corner->x, one_hundred_percent);
162 }
163
164 double
_gtk_css_corner_value_get_y(const GtkCssValue * corner,double one_hundred_percent)165 _gtk_css_corner_value_get_y (const GtkCssValue *corner,
166 double one_hundred_percent)
167 {
168 g_return_val_if_fail (corner != NULL, 0.0);
169 g_return_val_if_fail (corner->class == >K_CSS_VALUE_CORNER, 0.0);
170
171 return _gtk_css_number_value_get (corner->y, one_hundred_percent);
172 }
173
174