280 lines
6.8 KiB
Go
280 lines
6.8 KiB
Go
package zenity
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import (
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"context"
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"sync"
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"syscall"
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"unsafe"
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)
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func progress(opts options) (ProgressDialog, error) {
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if opts.title == nil {
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opts.title = stringPtr("")
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}
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if opts.okLabel == nil {
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opts.okLabel = stringPtr("OK")
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}
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if opts.cancelLabel == nil {
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opts.cancelLabel = stringPtr("Cancel")
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}
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if opts.maxValue == 0 {
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opts.maxValue = 100
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}
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if opts.ctx == nil {
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opts.ctx = context.Background()
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} else if cerr := opts.ctx.Err(); cerr != nil {
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return nil, cerr
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}
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dlg := &progressDialog{
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done: make(chan struct{}),
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max: opts.maxValue,
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}
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dlg.init.Add(1)
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go func() {
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dlg.err = dlg.setup(opts)
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close(dlg.done)
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}()
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dlg.init.Wait()
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return dlg, nil
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}
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type progressDialog struct {
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init sync.WaitGroup
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done chan struct{}
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max int
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err error
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wnd uintptr
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textCtl uintptr
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progCtl uintptr
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okBtn uintptr
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cancelBtn uintptr
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extraBtn uintptr
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font font
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}
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func (d *progressDialog) Text(text string) error {
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select {
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default:
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setWindowText.Call(d.textCtl, strptr(text))
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return nil
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case <-d.done:
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return d.err
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}
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}
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func (d *progressDialog) Value(value int) error {
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select {
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default:
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sendMessage.Call(d.progCtl, _PBM_SETPOS, uintptr(value), 0)
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if value >= d.max {
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enableWindow.Call(d.okBtn, 1)
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}
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return nil
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case <-d.done:
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return d.err
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}
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}
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func (d *progressDialog) MaxValue() int {
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return d.max
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}
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func (d *progressDialog) Done() <-chan struct{} {
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return d.done
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}
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func (d *progressDialog) Complete() error {
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select {
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default:
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setWindowLong.Call(d.progCtl, intptr(_GWL_STYLE), _WS_CHILD|_WS_VISIBLE|_PBS_SMOOTH)
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sendMessage.Call(d.progCtl, _PBM_SETRANGE32, 0, 1)
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sendMessage.Call(d.progCtl, _PBM_SETPOS, 1, 0)
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enableWindow.Call(d.okBtn, 1)
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enableWindow.Call(d.cancelBtn, 0)
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return nil
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case <-d.done:
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return d.err
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}
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}
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func (d *progressDialog) Close() error {
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sendMessage.Call(d.wnd, _WM_SYSCOMMAND, _SC_CLOSE, 0)
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<-d.done
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if d.err == ErrCanceled {
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return nil
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}
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return d.err
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}
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func (dlg *progressDialog) setup(opts options) error {
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done := false
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defer func() {
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if !done {
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dlg.init.Done()
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}
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}()
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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)
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if instance == 0 {
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return err
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}
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cls, err := registerClass(instance, syscall.NewCallback(progressProc))
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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,
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_CW_USEDEFAULT, _CW_USEDEFAULT,
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281, 133, 0, 0, instance, uintptr(unsafe.Pointer(dlg)))
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dlg.textCtl, _, _ = createWindowEx.Call(0,
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strptr("STATIC"), 0,
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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 | _PBS_SMOOTH
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if opts.maxValue < 0 {
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flags |= _PBS_MARQUEE
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}
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dlg.progCtl, _, _ = createWindowEx.Call(0,
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strptr(_PROGRESS_CLASS),
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0, flags,
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12, 30, 241, 16, 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|_WS_DISABLED,
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12, 58, 75, 24, dlg.wnd, _IDOK, instance, 0)
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if !opts.noCancel {
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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,
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12, 58, 75, 24, dlg.wnd, _IDCANCEL, instance, 0)
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}
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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,
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12, 58, 75, 24, dlg.wnd, _IDNO, instance, 0)
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}
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dlg.layout(getDPI(dlg.wnd))
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centerWindow(dlg.wnd)
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showWindow.Call(dlg.wnd, _SW_NORMAL, 0)
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if opts.maxValue < 0 {
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sendMessage.Call(dlg.progCtl, _PBM_SETMARQUEE, 1, 0)
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} else {
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sendMessage.Call(dlg.progCtl, _PBM_SETRANGE32, 0, uintptr(opts.maxValue))
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}
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dlg.init.Done()
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done = true
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if opts.ctx != nil {
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wait := make(chan struct{})
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defer close(wait)
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go func() {
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select {
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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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}
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}()
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}
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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.err
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}
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func (d *progressDialog) layout(dpi dpi) {
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font := d.font.forDPI(dpi)
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sendMessage.Call(d.textCtl, _WM_SETFONT, font, 1)
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sendMessage.Call(d.okBtn, _WM_SETFONT, font, 1)
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sendMessage.Call(d.cancelBtn, _WM_SETFONT, font, 1)
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sendMessage.Call(d.extraBtn, _WM_SETFONT, font, 1)
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setWindowPos.Call(d.wnd, 0, 0, 0, dpi.scale(281), dpi.scale(133), _SWP_NOZORDER|_SWP_NOMOVE)
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setWindowPos.Call(d.textCtl, 0, dpi.scale(12), dpi.scale(10), dpi.scale(241), dpi.scale(16), _SWP_NOZORDER)
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setWindowPos.Call(d.progCtl, 0, dpi.scale(12), dpi.scale(30), dpi.scale(241), dpi.scale(16), _SWP_NOZORDER)
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if d.extraBtn == 0 {
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if d.cancelBtn == 0 {
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setWindowPos.Call(d.okBtn, 0, dpi.scale(178), dpi.scale(58), dpi.scale(75), dpi.scale(24), _SWP_NOZORDER)
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} else {
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setWindowPos.Call(d.okBtn, 0, dpi.scale(95), dpi.scale(58), dpi.scale(75), dpi.scale(24), _SWP_NOZORDER)
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setWindowPos.Call(d.cancelBtn, 0, dpi.scale(178), dpi.scale(58), dpi.scale(75), dpi.scale(24), _SWP_NOZORDER)
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}
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} else {
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if d.cancelBtn == 0 {
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setWindowPos.Call(d.okBtn, 0, dpi.scale(95), dpi.scale(58), dpi.scale(75), dpi.scale(24), _SWP_NOZORDER)
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setWindowPos.Call(d.extraBtn, 0, dpi.scale(178), dpi.scale(58), dpi.scale(75), dpi.scale(24), _SWP_NOZORDER)
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} else {
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setWindowPos.Call(d.okBtn, 0, dpi.scale(12), dpi.scale(58), dpi.scale(75), dpi.scale(24), _SWP_NOZORDER)
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setWindowPos.Call(d.extraBtn, 0, dpi.scale(95), dpi.scale(58), dpi.scale(75), dpi.scale(24), _SWP_NOZORDER)
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setWindowPos.Call(d.cancelBtn, 0, dpi.scale(178), dpi.scale(58), dpi.scale(75), dpi.scale(24), _SWP_NOZORDER)
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}
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}
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}
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func progressProc(wnd uintptr, msg uint32, wparam uintptr, lparam *unsafe.Pointer) uintptr {
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var dlg *progressDialog
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switch msg {
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case _WM_NCCREATE:
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saveBackRef(wnd, *lparam)
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dlg = (*progressDialog)(*lparam)
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case _WM_NCDESTROY:
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deleteBackRef(wnd)
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default:
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dlg = (*progressDialog)(loadBackRef(wnd))
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}
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switch msg {
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case _WM_DESTROY:
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postQuitMessage.Call(0)
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case _WM_CLOSE:
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dlg.err = ErrCanceled
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destroyWindow.Call(wnd)
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case _WM_COMMAND:
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switch wparam {
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default:
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return 1
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case _IDOK, _IDYES:
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//
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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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}
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destroyWindow.Call(wnd)
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case _WM_DPICHANGED:
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dlg.layout(dpi(uint32(wparam) >> 16))
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default:
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res, _, _ := defWindowProc.Call(wnd, uintptr(msg), wparam, uintptr(unsafe.Pointer(lparam)))
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return res
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}
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return 0
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}
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