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
144
145
146
147
148
149
150
151
152
153
154
155
156
157
|
#include "gtkgizmoprivate.h"
#include "gtkwidgetprivate.h"
#include "gtkcsscustomgadgetprivate.h"
G_DEFINE_TYPE (GtkGizmo, gtk_gizmo, GTK_TYPE_WIDGET);
static void
gtk_gizmo_measure (GtkWidget *widget,
GtkOrientation orientation,
int for_size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline)
{
GtkGizmo *self = GTK_GIZMO (widget);
gtk_css_gadget_get_preferred_size (self->gadget,
orientation,
for_size,
minimum, natural,
minimum_baseline, natural_baseline);
}
static void
gtk_gizmo_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkGizmo *self = GTK_GIZMO (widget);
GtkAllocation clip;
GTK_WIDGET_CLASS (gtk_gizmo_parent_class)->size_allocate (widget, allocation);
gtk_css_gadget_allocate (self->gadget,
allocation,
gtk_widget_get_allocated_baseline (widget),
&clip);
gtk_widget_set_clip (widget, &clip);
}
static void
gtk_gizmo_snapshot (GtkWidget *widget,
GtkSnapshot *snapshot)
{
GtkGizmo *self = GTK_GIZMO (widget);
gtk_css_gadget_snapshot (self->gadget, snapshot);
}
static void
gtk_gizmo_measure_contents (GtkCssGadget *gadget,
GtkOrientation orientation,
int for_size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline,
gpointer user_data)
{
GtkGizmo *self = GTK_GIZMO (gtk_css_gadget_get_owner (gadget));
if (self->measure_func)
self->measure_func (self, orientation, for_size,
minimum, natural,
minimum_baseline, natural_baseline);
}
static void
gtk_gizmo_allocate_contents (GtkCssGadget *gadget,
const GtkAllocation *allocation,
int baseline,
GtkAllocation *out_clip,
gpointer user_data)
{
GtkGizmo *self = GTK_GIZMO (gtk_css_gadget_get_owner (gadget));
if (self->allocate_func)
self->allocate_func (self,
allocation,
baseline,
out_clip);
}
static gboolean
gtk_gizmo_snapshot_contents (GtkCssGadget *gadget,
GtkSnapshot *snapshot,
int x,
int y,
int width,
int height,
gpointer user_data)
{
GtkGizmo *self = GTK_GIZMO (gtk_css_gadget_get_owner (gadget));
if (self->snapshot_func)
return self->snapshot_func (self, snapshot);
return FALSE;
}
static void
gtk_gizmo_finalize (GObject *obj)
{
GtkGizmo *self = GTK_GIZMO (obj);
g_clear_object (&self->gadget);
G_OBJECT_CLASS (gtk_gizmo_parent_class)->finalize (obj);
}
static void
gtk_gizmo_class_init (GtkGizmoClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
object_class->finalize = gtk_gizmo_finalize;
widget_class->measure = gtk_gizmo_measure;
widget_class->size_allocate = gtk_gizmo_size_allocate;
widget_class->snapshot = gtk_gizmo_snapshot;
}
static void
gtk_gizmo_init (GtkGizmo *self)
{
gtk_widget_set_has_window (GTK_WIDGET (self), FALSE);
self->gadget = gtk_css_custom_gadget_new_for_node (gtk_widget_get_css_node (GTK_WIDGET (self)),
GTK_WIDGET (self),
gtk_gizmo_measure_contents,
gtk_gizmo_allocate_contents,
gtk_gizmo_snapshot_contents,
NULL,
NULL);
}
GtkWidget *
gtk_gizmo_new (const char *css_name,
GtkGizmoMeasureFunc measure_func,
GtkGizmoAllocateFunc allocate_func,
GtkGizmoSnapshotFunc snapshot_func)
{
GtkGizmo *gizmo = GTK_GIZMO (g_object_new (GTK_TYPE_GIZMO,
"css-name", css_name,
NULL));
gizmo->measure_func = measure_func;
gizmo->allocate_func = allocate_func;
gizmo->snapshot_func = snapshot_func;
return GTK_WIDGET (gizmo);
}
|