zenity/date_windows.go

189 lines
5.3 KiB
Go
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2022-03-28 22:05:46 -04:00
package zenity
import (
"syscall"
"time"
"unsafe"
)
func calendar(text string, opts options) (time.Time, error) {
if opts.title == nil {
opts.title = stringPtr("")
}
if opts.okLabel == nil {
opts.okLabel = stringPtr("OK")
}
if opts.cancelLabel == nil {
opts.cancelLabel = stringPtr("Cancel")
}
dlg := &calendarDialog{}
return dlg.setup(text, opts)
}
type calendarDialog struct {
out time.Time
err error
wnd uintptr
textCtl uintptr
dateCtl uintptr
okBtn uintptr
cancelBtn uintptr
extraBtn uintptr
font font
}
func (dlg *calendarDialog) setup(text string, opts options) (time.Time, error) {
defer setup()()
dlg.font = getFont()
defer dlg.font.delete()
if opts.ctx != nil && opts.ctx.Err() != nil {
return time.Time{}, opts.ctx.Err()
}
instance, _, err := getModuleHandle.Call(0)
if instance == 0 {
return time.Time{}, err
}
cls, err := registerClass(instance, syscall.NewCallback(calendarProc))
if cls == 0 {
return time.Time{}, err
}
defer unregisterClass.Call(cls, instance)
dlg.wnd, _, _ = createWindowEx.Call(_WS_EX_CONTROLPARENT|_WS_EX_WINDOWEDGE|_WS_EX_DLGMODALFRAME,
cls, strptr(*opts.title),
_WS_POPUPWINDOW|_WS_CLIPSIBLINGS|_WS_DLGFRAME,
_CW_USEDEFAULT, _CW_USEDEFAULT,
281, 281, 0, 0, instance, uintptr(unsafe.Pointer(dlg)))
dlg.textCtl, _, _ = createWindowEx.Call(0,
strptr("STATIC"), strptr(text),
_WS_CHILD|_WS_VISIBLE|_WS_GROUP|_SS_WORDELLIPSIS|_SS_EDITCONTROL|_SS_NOPREFIX,
12, 10, 241, 16, dlg.wnd, 0, instance, 0)
var flags uintptr = _WS_CHILD | _WS_VISIBLE | _WS_GROUP | _WS_TABSTOP | _MCS_NOTODAY
dlg.dateCtl, _, _ = createWindowEx.Call(0,
strptr(_MONTHCAL_CLASS),
0, flags,
12, 30, 241, 164, dlg.wnd, 0, instance, 0)
dlg.okBtn, _, _ = createWindowEx.Call(0,
strptr("BUTTON"), strptr(*opts.okLabel),
_WS_CHILD|_WS_VISIBLE|_WS_GROUP|_WS_TABSTOP|_BS_DEFPUSHBUTTON,
12, 206, 75, 24, dlg.wnd, _IDOK, instance, 0)
dlg.cancelBtn, _, _ = createWindowEx.Call(0,
strptr("BUTTON"), strptr(*opts.cancelLabel),
_WS_CHILD|_WS_VISIBLE|_WS_GROUP|_WS_TABSTOP,
12, 206, 75, 24, dlg.wnd, _IDCANCEL, instance, 0)
if opts.extraButton != nil {
dlg.extraBtn, _, _ = createWindowEx.Call(0,
strptr("BUTTON"), strptr(*opts.extraButton),
_WS_CHILD|_WS_VISIBLE|_WS_GROUP|_WS_TABSTOP,
12, 206, 75, 24, dlg.wnd, _IDNO, instance, 0)
}
if opts.time != nil {
var date _SYSTEMTIME
year, month, day := opts.time.Date()
date.year = uint16(year)
date.month = uint16(month)
date.day = uint16(day)
sendMessage.Call(dlg.dateCtl, _MCM_SETCURSEL, 0, uintptr(unsafe.Pointer(&date)))
}
dlg.layout(getDPI(dlg.wnd))
centerWindow(dlg.wnd)
setFocus.Call(dlg.dateCtl)
showWindow.Call(dlg.wnd, _SW_NORMAL, 0)
if opts.ctx != nil {
wait := make(chan struct{})
defer close(wait)
go func() {
select {
case <-opts.ctx.Done():
sendMessage.Call(dlg.wnd, _WM_SYSCOMMAND, _SC_CLOSE, 0)
case <-wait:
}
}()
}
if err := messageLoop(dlg.wnd); err != nil {
return time.Time{}, err
}
if opts.ctx != nil && opts.ctx.Err() != nil {
return time.Time{}, opts.ctx.Err()
}
return dlg.out, dlg.err
}
func (dlg *calendarDialog) layout(dpi dpi) {
font := dlg.font.forDPI(dpi)
sendMessage.Call(dlg.textCtl, _WM_SETFONT, font, 1)
sendMessage.Call(dlg.dateCtl, _WM_SETFONT, font, 1)
sendMessage.Call(dlg.okBtn, _WM_SETFONT, font, 1)
sendMessage.Call(dlg.cancelBtn, _WM_SETFONT, font, 1)
sendMessage.Call(dlg.extraBtn, _WM_SETFONT, font, 1)
setWindowPos.Call(dlg.wnd, 0, 0, 0, dpi.scale(281), dpi.scale(281), _SWP_NOZORDER|_SWP_NOMOVE)
setWindowPos.Call(dlg.textCtl, 0, dpi.scale(12), dpi.scale(10), dpi.scale(241), dpi.scale(16), _SWP_NOZORDER)
setWindowPos.Call(dlg.dateCtl, 0, dpi.scale(12), dpi.scale(30), dpi.scale(241), dpi.scale(164), _SWP_NOZORDER)
if dlg.extraBtn == 0 {
setWindowPos.Call(dlg.okBtn, 0, dpi.scale(95), dpi.scale(206), dpi.scale(75), dpi.scale(24), _SWP_NOZORDER)
setWindowPos.Call(dlg.cancelBtn, 0, dpi.scale(178), dpi.scale(206), dpi.scale(75), dpi.scale(24), _SWP_NOZORDER)
} else {
setWindowPos.Call(dlg.okBtn, 0, dpi.scale(12), dpi.scale(206), dpi.scale(75), dpi.scale(24), _SWP_NOZORDER)
setWindowPos.Call(dlg.extraBtn, 0, dpi.scale(95), dpi.scale(206), dpi.scale(75), dpi.scale(24), _SWP_NOZORDER)
setWindowPos.Call(dlg.cancelBtn, 0, dpi.scale(178), dpi.scale(206), dpi.scale(75), dpi.scale(24), _SWP_NOZORDER)
}
}
func calendarProc(wnd uintptr, msg uint32, wparam uintptr, lparam *unsafe.Pointer) uintptr {
var dlg *calendarDialog
switch msg {
case _WM_NCCREATE:
saveBackRef(wnd, *lparam)
dlg = (*calendarDialog)(*lparam)
case _WM_NCDESTROY:
deleteBackRef(wnd)
default:
dlg = (*calendarDialog)(loadBackRef(wnd))
}
switch msg {
case _WM_DESTROY:
postQuitMessage.Call(0)
case _WM_CLOSE:
dlg.err = ErrCanceled
destroyWindow.Call(wnd)
case _WM_COMMAND:
switch wparam {
default:
return 1
case _IDOK, _IDYES:
var date _SYSTEMTIME
sendMessage.Call(dlg.dateCtl, _MCM_GETCURSEL, 0, uintptr(unsafe.Pointer(&date)))
dlg.out = time.Date(int(date.year), time.Month(date.month), int(date.day), 0, 0, 0, 0, time.UTC)
case _IDCANCEL:
dlg.err = ErrCanceled
case _IDNO:
dlg.err = ErrExtraButton
}
destroyWindow.Call(wnd)
case _WM_DPICHANGED:
dlg.layout(dpi(uint32(wparam) >> 16))
default:
res, _, _ := defWindowProc.Call(wnd, uintptr(msg), wparam, uintptr(unsafe.Pointer(lparam)))
return res
}
return 0
}