1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
|
/*
* 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: Benjamin Otte <otte@gnome.org>
*/
#include "config.h"
#include "gtkcsstransitionprivate.h"
#include "gtkcsseasevalueprivate.h"
#include "gtkprogresstrackerprivate.h"
G_DEFINE_TYPE (GtkCssTransition, _gtk_css_transition, GTK_TYPE_STYLE_ANIMATION)
static void
gtk_css_transition_set_values (GtkStyleAnimation *animation,
gint64 for_time_us,
GtkCssAnimatedStyle *style)
{
GtkCssTransition *transition = GTK_CSS_TRANSITION (animation);
GtkCssValue *value, *end;
double progress;
GtkProgressState state;
end = gtk_css_animated_style_get_intrinsic_value (style, transition->property);
gtk_progress_tracker_advance_frame (&transition->tracker, for_time_us);
state = gtk_progress_tracker_get_state (&transition->tracker);
if (state == GTK_PROGRESS_STATE_BEFORE)
value = _gtk_css_value_ref (transition->start);
else if (state == GTK_PROGRESS_STATE_DURING)
{
progress = gtk_progress_tracker_get_progress (&transition->tracker, FALSE);
progress = _gtk_css_ease_value_transform (transition->ease, progress);
value = _gtk_css_value_transition (transition->start,
end,
transition->property,
progress);
}
else
return;
if (value == NULL)
value = _gtk_css_value_ref (end);
gtk_css_animated_style_set_animated_value (style, transition->property, value);
_gtk_css_value_unref (value);
}
static gboolean
gtk_css_transition_is_finished (GtkStyleAnimation *animation,
gint64 at_time_us)
{
GtkCssTransition *transition = GTK_CSS_TRANSITION (animation);
return gtk_progress_tracker_get_state (&transition->tracker) == GTK_PROGRESS_STATE_AFTER;
}
static gboolean
gtk_css_transition_is_static (GtkStyleAnimation *animation,
gint64 at_time_us)
{
GtkCssTransition *transition = GTK_CSS_TRANSITION (animation);
return gtk_progress_tracker_get_state (&transition->tracker) == GTK_PROGRESS_STATE_AFTER;
}
static void
gtk_css_transition_finalize (GObject *object)
{
GtkCssTransition *transition = GTK_CSS_TRANSITION (object);
_gtk_css_value_unref (transition->start);
_gtk_css_value_unref (transition->ease);
G_OBJECT_CLASS (_gtk_css_transition_parent_class)->finalize (object);
}
static void
_gtk_css_transition_class_init (GtkCssTransitionClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkStyleAnimationClass *animation_class = GTK_STYLE_ANIMATION_CLASS (klass);
object_class->finalize = gtk_css_transition_finalize;
animation_class->set_values = gtk_css_transition_set_values;
animation_class->is_finished = gtk_css_transition_is_finished;
animation_class->is_static = gtk_css_transition_is_static;
}
static void
_gtk_css_transition_init (GtkCssTransition *transition)
{
}
GtkStyleAnimation *
_gtk_css_transition_new (guint property,
GtkCssValue *start,
GtkCssValue *ease,
gint64 timestamp,
gint64 duration_us,
gint64 delay_us)
{
GtkCssTransition *transition;
g_return_val_if_fail (start != NULL, NULL);
g_return_val_if_fail (ease != NULL, NULL);
transition = g_object_new (GTK_TYPE_CSS_TRANSITION, NULL);
transition->property = property;
transition->start = _gtk_css_value_ref (start);
transition->ease = _gtk_css_value_ref (ease);
gtk_progress_tracker_start (&transition->tracker, duration_us, delay_us, 1.0);
gtk_progress_tracker_advance_frame (&transition->tracker, timestamp);
return GTK_STYLE_ANIMATION (transition);
}
guint
_gtk_css_transition_get_property (GtkCssTransition *transition)
{
g_return_val_if_fail (GTK_IS_CSS_TRANSITION (transition), 0);
return transition->property;
}
|
