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
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
|
// +build !windows,!darwin
// 7 july 2014
package ui
import (
"unsafe"
)
// #include "gtk_unix.h"
// extern void buttonClicked(GtkButton *, gpointer);
// extern void checkboxToggled(GtkToggleButton *, gpointer);
import "C"
// TODOs:
// - standalone label on its own: should it be centered or not?
type widgetbase struct {
widget *C.GtkWidget
}
func newWidget(w *C.GtkWidget) *widgetbase {
return &widgetbase{
widget: w,
}
}
// these few methods are embedded by all the various Controls since they all will do the same thing
type controlParent struct {
c *C.GtkContainer
}
func (w *widgetbase) setParent(c *controlParent) {
C.gtk_container_add(c.c, w.widget)
// make sure the new widget is shown
C.gtk_widget_show_all(w.widget)
}
func (w *widgetbase) containerShow() {
C.gtk_widget_show_all(w.widget)
}
func (w *widgetbase) containerHide() {
C.gtk_widget_hide(w.widget)
}
type button struct {
*widgetbase
button *C.GtkButton
clicked *event
}
// shared code for setting up buttons, check boxes, etc.
func finishNewButton(widget *C.GtkWidget, event string, handler unsafe.Pointer) *button {
b := &button{
widgetbase: newWidget(widget),
button: (*C.GtkButton)(unsafe.Pointer(widget)),
clicked: newEvent(),
}
g_signal_connect(
C.gpointer(unsafe.Pointer(b.button)),
event,
C.GCallback(handler),
C.gpointer(unsafe.Pointer(b)))
return b
}
func newButton(text string) *button {
ctext := togstr(text)
defer freegstr(ctext)
widget := C.gtk_button_new_with_label(ctext)
return finishNewButton(widget, "clicked", C.buttonClicked)
}
func (b *button) OnClicked(e func()) {
b.clicked.set(e)
}
//export buttonClicked
func buttonClicked(bwid *C.GtkButton, data C.gpointer) {
b := (*button)(unsafe.Pointer(data))
b.clicked.fire()
println("button clicked")
}
func (b *button) Text() string {
return fromgstr(C.gtk_button_get_label(b.button))
}
func (b *button) SetText(text string) {
ctext := togstr(text)
defer freegstr(ctext)
C.gtk_button_set_label(b.button, ctext)
}
type checkbox struct {
// embed button so its methods and events carry over
*button
toggle *C.GtkToggleButton
checkbox *C.GtkCheckButton
}
func newCheckbox(text string) *checkbox {
ctext := togstr(text)
defer freegstr(ctext)
widget := C.gtk_check_button_new_with_label(ctext)
return &checkbox{
button: finishNewButton(widget, "toggled", C.checkboxToggled),
toggle: (*C.GtkToggleButton)(unsafe.Pointer(widget)),
checkbox: (*C.GtkCheckButton)(unsafe.Pointer(widget)),
}
}
//export checkboxToggled
func checkboxToggled(bwid *C.GtkToggleButton, data C.gpointer) {
// note that the finishNewButton() call uses the embedded *button as data
// this is fine because we're only deferring to buttonClicked() anyway
buttonClicked(nil, data)
}
func (c *checkbox) Checked() bool {
return fromgbool(C.gtk_toggle_button_get_active(c.toggle))
}
func (c *checkbox) SetChecked(checked bool) {
C.gtk_toggle_button_set_active(c.toggle, togbool(checked))
}
type textField struct {
*widgetbase
entry *C.GtkEntry
}
func startNewTextField() *textField {
w := C.gtk_entry_new()
return &textField{
widgetbase: newWidget(w),
entry: (*C.GtkEntry)(unsafe.Pointer(w)),
}
}
func newTextField() *textField {
return startNewTextField()
}
func newPasswordField() *textField {
t := startNewTextField()
C.gtk_entry_set_visibility(t.entry, C.FALSE)
return t
}
func (t *textField) Text() string {
return fromgstr(C.gtk_entry_get_text(t.entry))
}
func (t *textField) SetText(text string) {
ctext := togstr(text)
defer freegstr(ctext)
C.gtk_entry_set_text(t.entry, ctext)
}
type label struct {
*widgetbase
misc *C.GtkMisc
label *C.GtkLabel
standalone bool
}
func finishNewLabel(text string, standalone bool) *label {
ctext := togstr(text)
defer freegstr(ctext)
widget := C.gtk_label_new(ctext)
return &label{
widgetbase: newWidget(widget),
misc: (*C.GtkMisc)(unsafe.Pointer(widget)),
label: (*C.GtkLabel)(unsafe.Pointer(widget)),
standalone: standalone,
}
}
func newLabel(text string) Label {
return finishNewLabel(text, false)
}
func newStandaloneLabel(text string) Label {
return finishNewLabel(text, true)
}
func (l *label) Text() string {
return fromgstr(C.gtk_label_get_text(l.label))
}
func (l *label) SetText(text string) {
ctext := togstr(text)
defer freegstr(ctext)
C.gtk_label_set_text(l.label, ctext)
}
func (l *label) commitResize(c *allocation, d *sizing) {
if !l.standalone && c.neighbor != nil {
c.neighbor.getAuxResizeInfo(d)
if d.shouldVAlignTop {
// TODO should it be center-aligned to the first line or not
C.gtk_misc_set_alignment(l.misc, 0, 0)
} else {
C.gtk_misc_set_alignment(l.misc, 0, 0.5)
}
}
l.widgetbase.commitResize(c, d)
}
|
