zenity/entry_windows.go

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package zenity
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import (
"syscall"
"unsafe"
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)
func entry(text string, opts options) (string, error) {
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if opts.title == nil {
opts.title = stringPtr("")
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}
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if opts.okLabel == nil {
opts.okLabel = stringPtr("OK")
}
if opts.cancelLabel == nil {
opts.cancelLabel = stringPtr("Cancel")
}
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dlg := &entryDialog{}
return dlg.setup(text, opts)
}
type entryDialog struct {
out string
err error
wnd uintptr
textCtl uintptr
editCtl uintptr
okBtn uintptr
cancelBtn uintptr
extraBtn uintptr
font font
}
func (dlg *entryDialog) setup(text string, opts options) (string, error) {
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defer setup()()
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dlg.font = getFont()
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defer dlg.font.delete()
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if opts.ctx != nil && opts.ctx.Err() != nil {
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return "", opts.ctx.Err()
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}
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instance, _, err := getModuleHandle.Call(0)
if instance == 0 {
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return "", err
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}
cls, err := registerClass(instance, syscall.NewCallback(entryProc))
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if cls == 0 {
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return "", err
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}
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defer unregisterClass.Call(cls, instance)
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dlg.wnd, _, _ = createWindowEx.Call(_WS_EX_CONTROLPARENT|_WS_EX_WINDOWEDGE|_WS_EX_DLGMODALFRAME,
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cls, strptr(*opts.title),
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_WS_POPUPWINDOW|_WS_CLIPSIBLINGS|_WS_DLGFRAME,
_CW_USEDEFAULT, _CW_USEDEFAULT,
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281, 141, 0, 0, instance, uintptr(unsafe.Pointer(dlg)))
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dlg.textCtl, _, _ = createWindowEx.Call(0,
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strptr("STATIC"), strptr(text),
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_WS_CHILD|_WS_VISIBLE|_WS_GROUP|_SS_WORDELLIPSIS|_SS_EDITCONTROL|_SS_NOPREFIX,
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12, 10, 241, 16, dlg.wnd, 0, instance, 0)
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var flags uintptr = _WS_CHILD | _WS_VISIBLE | _WS_GROUP | _WS_TABSTOP | _ES_AUTOHSCROLL
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if opts.hideText {
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flags |= _ES_PASSWORD
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}
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dlg.editCtl, _, _ = createWindowEx.Call(_WS_EX_CLIENTEDGE,
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strptr("EDIT"), strptr(opts.entryText),
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flags,
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12, 30, 241, 24, dlg.wnd, 0, instance, 0)
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dlg.okBtn, _, _ = createWindowEx.Call(0,
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strptr("BUTTON"), strptr(*opts.okLabel),
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_WS_CHILD|_WS_VISIBLE|_WS_GROUP|_WS_TABSTOP|_BS_DEFPUSHBUTTON,
12, 66, 75, 24, dlg.wnd, _IDOK, instance, 0)
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dlg.cancelBtn, _, _ = createWindowEx.Call(0,
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strptr("BUTTON"), strptr(*opts.cancelLabel),
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_WS_CHILD|_WS_VISIBLE|_WS_GROUP|_WS_TABSTOP,
12, 66, 75, 24, dlg.wnd, _IDCANCEL, instance, 0)
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if opts.extraButton != nil {
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dlg.extraBtn, _, _ = createWindowEx.Call(0,
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strptr("BUTTON"), strptr(*opts.extraButton),
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_WS_CHILD|_WS_VISIBLE|_WS_GROUP|_WS_TABSTOP,
12, 66, 75, 24, dlg.wnd, _IDNO, instance, 0)
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}
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dlg.layout(getDPI(dlg.wnd))
centerWindow(dlg.wnd)
setFocus.Call(dlg.editCtl)
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showWindow.Call(dlg.wnd, _SW_NORMAL, 0)
sendMessage.Call(dlg.editCtl, _EM_SETSEL, 0, intptr(-1))
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if opts.ctx != nil {
wait := make(chan struct{})
defer close(wait)
go func() {
select {
case <-opts.ctx.Done():
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sendMessage.Call(dlg.wnd, _WM_SYSCOMMAND, _SC_CLOSE, 0)
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case <-wait:
}
}()
}
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if err := messageLoop(dlg.wnd); err != nil {
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return "", err
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}
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if opts.ctx != nil && opts.ctx.Err() != nil {
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return "", opts.ctx.Err()
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}
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return dlg.out, dlg.err
}
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func (dlg *entryDialog) layout(dpi dpi) {
font := dlg.font.forDPI(dpi)
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sendMessage.Call(dlg.textCtl, _WM_SETFONT, font, 1)
sendMessage.Call(dlg.editCtl, _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(141), _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.editCtl, 0, dpi.scale(12), dpi.scale(30), dpi.scale(241), dpi.scale(24), _SWP_NOZORDER)
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if dlg.extraBtn == 0 {
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setWindowPos.Call(dlg.okBtn, 0, dpi.scale(95), dpi.scale(66), dpi.scale(75), dpi.scale(24), _SWP_NOZORDER)
setWindowPos.Call(dlg.cancelBtn, 0, dpi.scale(178), dpi.scale(66), dpi.scale(75), dpi.scale(24), _SWP_NOZORDER)
} else {
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setWindowPos.Call(dlg.okBtn, 0, dpi.scale(12), dpi.scale(66), dpi.scale(75), dpi.scale(24), _SWP_NOZORDER)
setWindowPos.Call(dlg.extraBtn, 0, dpi.scale(95), dpi.scale(66), dpi.scale(75), dpi.scale(24), _SWP_NOZORDER)
setWindowPos.Call(dlg.cancelBtn, 0, dpi.scale(178), dpi.scale(66), dpi.scale(75), dpi.scale(24), _SWP_NOZORDER)
}
}
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func entryProc(wnd uintptr, msg uint32, wparam uintptr, lparam *unsafe.Pointer) uintptr {
var dlg *entryDialog
switch msg {
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case _WM_NCCREATE:
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saveBackRef(wnd, *lparam)
dlg = (*entryDialog)(*lparam)
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case _WM_NCDESTROY:
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deleteBackRef(wnd)
default:
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dlg = (*entryDialog)(loadBackRef(wnd))
}
switch msg {
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case _WM_DESTROY:
postQuitMessage.Call(0)
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case _WM_CLOSE:
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dlg.err = ErrCanceled
destroyWindow.Call(wnd)
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case _WM_COMMAND:
switch wparam {
default:
return 1
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case _IDOK, _IDYES:
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dlg.out = getWindowString(dlg.editCtl)
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case _IDCANCEL:
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dlg.err = ErrCanceled
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case _IDNO:
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dlg.err = ErrExtraButton
}
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destroyWindow.Call(wnd)
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case _WM_DPICHANGED:
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dlg.layout(dpi(uint32(wparam) >> 16))
default:
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res, _, _ := defWindowProc.Call(wnd, uintptr(msg), wparam, uintptr(unsafe.Pointer(lparam)))
return res
}
return 0
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}