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// +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 button struct {
*controlbase
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{
controlbase: newControl(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 {
*controlbase
entry *C.GtkEntry
}
func startNewTextField() *textField {
w := C.gtk_entry_new()
return &textField{
controlbase: newControl(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 {
*controlbase
misc *C.GtkMisc
label *C.GtkLabel
standalone bool
supercommitResize func(c *allocation, d *sizing)
}
func finishNewLabel(text string, standalone bool) *label {
ctext := togstr(text)
defer freegstr(ctext)
widget := C.gtk_label_new(ctext)
l := &label{
controlbase: newControl(widget),
misc: (*C.GtkMisc)(unsafe.Pointer(widget)),
label: (*C.GtkLabel)(unsafe.Pointer(widget)),
standalone: standalone,
}
l.supercommitResize = l.fcommitResize
l.fcommitResize = l.labelcommitResize
return l
}
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) labelcommitResize(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.supercommitResize(c, d)
}
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