108 lines
2.8 KiB
Go
108 lines
2.8 KiB
Go
// 12 december 2015
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package ui
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import (
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"time"
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"unsafe"
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)
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// #include <stdlib.h>
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// #include <time.h>
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// #include "ui.h"
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// #include "util.h"
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// static inline struct tm *allocTimeStruct(void)
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// {
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// return (struct tm *) pkguiAlloc(sizeof (struct tm));
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// }
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// extern void doDateTimePickerOnChanged(uiDateTimePicker *, void *);
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// // see golang/go#19835
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// typedef void (*dtpCallback)(uiDateTimePicker *, void *);
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import "C"
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// DateTimePicker is a Control that represents a field where the user
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// can enter a date and/or a time.
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type DateTimePicker struct {
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ControlBase
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d *C.uiDateTimePicker
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onChanged func(*DateTimePicker)
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}
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func finishNewDateTimePicker(dd *C.uiDateTimePicker) *DateTimePicker {
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d := new(DateTimePicker)
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d.d = dd
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C.uiDateTimePickerOnChanged(d.d, C.dtpCallback(C.doDateTimePickerOnChanged), nil)
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d.ControlBase = NewControlBase(d, uintptr(unsafe.Pointer(d.d)))
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return d
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}
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// NewDateTimePicker creates a new DateTimePicker that shows
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// both a date and a time.
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func NewDateTimePicker() *DateTimePicker {
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return finishNewDateTimePicker(C.uiNewDateTimePicker())
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}
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// NewDatePicker creates a new DateTimePicker that shows
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// only a date.
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func NewDatePicker() *DateTimePicker {
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return finishNewDateTimePicker(C.uiNewDatePicker())
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}
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// NewTimePicker creates a new DateTimePicker that shows
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// only a time.
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func NewTimePicker() *DateTimePicker {
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return finishNewDateTimePicker(C.uiNewTimePicker())
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}
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// Time returns the time stored in the uiDateTimePicker.
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// The time is assumed to be local time.
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func (d *DateTimePicker) Time() time.Time {
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tm := C.allocTimeStruct()
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defer C.free(unsafe.Pointer(tm))
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C.uiDateTimePickerTime(d.d, tm)
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return time.Date(
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int(tm.tm_year + 1900),
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time.Month(tm.tm_mon + 1),
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int(tm.tm_mday),
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int(tm.tm_hour),
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int(tm.tm_min),
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int(tm.tm_sec),
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0, time.Local)
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}
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// SetTime sets the time in the DateTimePicker to t.
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// t's components are read as-is via t.Date() and t.Clock();
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// no time zone manipulations are done.
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func (d *DateTimePicker) SetTime(t time.Time) {
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tm := C.allocTimeStruct()
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defer C.free(unsafe.Pointer(tm))
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year, mon, mday := t.Date()
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tm.tm_year = C.int(year - 1900)
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tm.tm_mon = C.int(mon - 1)
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tm.tm_mday = C.int(mday)
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hour, min, sec := t.Clock()
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tm.tm_hour = C.int(hour)
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tm.tm_min = C.int(min)
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tm.tm_sec = C.int(sec)
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tm.tm_isdst = -1
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C.uiDateTimePickerSetTime(d.d, tm)
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}
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// OnChanged registers f to be run when the user changes the time
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// in the DateTimePicker. Only one function can be registered at a
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// time.
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func (d *DateTimePicker) OnChanged(f func(*DateTimePicker)) {
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d.onChanged = f
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}
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//export doDateTimePickerOnChanged
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func doDateTimePickerOnChanged(dd *C.uiDateTimePicker, data unsafe.Pointer) {
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d := ControlFromLibui(uintptr(unsafe.Pointer(dd))).(*DateTimePicker)
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if d.onChanged != nil {
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d.onChanged(d)
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}
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}
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