285 lines
6.5 KiB
Go
285 lines
6.5 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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"github.com/ncruces/zenity/internal/win"
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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 = ptr("")
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}
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if opts.okLabel == nil {
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opts.okLabel = ptr("OK")
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}
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if opts.cancelLabel == nil {
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opts.cancelLabel = ptr("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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close: opts.autoClose,
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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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err error
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max int
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close bool
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wnd win.HWND
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textCtl win.HWND
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progCtl win.HWND
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okBtn win.HWND
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cancelBtn win.HWND
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extraBtn win.HWND
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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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win.SetWindowText(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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if value >= d.max && d.close {
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return d.Close()
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}
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select {
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default:
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win.SendMessage(d.progCtl, win.PBM_SETPOS, uintptr(value), 0)
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if value >= d.max {
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win.EnableWindow(d.okBtn, true)
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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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win.SetWindowLong(d.progCtl, win.GWL_STYLE, win.WS_CHILD|win.WS_VISIBLE|win.PBS_SMOOTH)
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win.SendMessage(d.progCtl, win.PBM_SETRANGE32, 0, 1)
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win.SendMessage(d.progCtl, win.PBM_SETPOS, 1, 0)
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win.EnableWindow(d.okBtn, true)
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win.EnableWindow(d.cancelBtn, false)
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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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win.SendMessage(d.wnd, win.WM_SYSCOMMAND, win.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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var once sync.Once
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defer once.Do(dlg.init.Done)
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owner, _ := opts.attach.(win.HWND)
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defer setup(owner)()
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dlg.font = getFont()
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defer dlg.font.delete()
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icon, _ := getIcon(opts.windowIcon)
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defer icon.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 := win.GetModuleHandle(nil)
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if err != nil {
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return err
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}
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cls, err := registerClass(instance, icon.handle, syscall.NewCallback(progressProc))
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if err != nil {
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return err
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}
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defer win.UnregisterClass(cls, instance)
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dlg.wnd, _ = win.CreateWindowEx(_WS_EX_ZEN_DIALOG,
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cls, strptr(*opts.title), _WS_ZEN_DIALOG,
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win.CW_USEDEFAULT, win.CW_USEDEFAULT,
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281, 133, owner, 0, instance, unsafe.Pointer(dlg))
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dlg.textCtl, _ = win.CreateWindowEx(0,
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strptr("STATIC"), nil, _WS_ZEN_LABEL,
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12, 10, 241, 16, dlg.wnd, 0, instance, nil)
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var flags uint32 = win.WS_CHILD | win.WS_VISIBLE | win.PBS_SMOOTH
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if opts.maxValue < 0 {
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flags |= win.PBS_MARQUEE
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}
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dlg.progCtl, _ = win.CreateWindowEx(0,
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strptr(win.PROGRESS_CLASS),
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nil, flags,
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12, 30, 241, 16, dlg.wnd, 0, instance, nil)
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if !opts.noCancel || !opts.autoClose {
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dlg.okBtn, _ = win.CreateWindowEx(0,
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strptr("BUTTON"), strptr(quoteAccelerators(*opts.okLabel)),
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_WS_ZEN_BUTTON|win.BS_DEFPUSHBUTTON|win.WS_DISABLED,
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12, 58, 75, 24, dlg.wnd, win.IDOK, instance, nil)
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}
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if !opts.noCancel {
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dlg.cancelBtn, _ = win.CreateWindowEx(0,
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strptr("BUTTON"), strptr(quoteAccelerators(*opts.cancelLabel)),
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_WS_ZEN_BUTTON,
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12, 58, 75, 24, dlg.wnd, win.IDCANCEL, instance, nil)
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}
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if opts.extraButton != nil {
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dlg.extraBtn, _ = win.CreateWindowEx(0,
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strptr("BUTTON"), strptr(quoteAccelerators(*opts.extraButton)),
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_WS_ZEN_BUTTON,
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12, 58, 75, 24, dlg.wnd, win.IDNO, instance, nil)
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}
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dlg.layout(getDPI(dlg.wnd))
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centerWindow(dlg.wnd)
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win.ShowWindow(dlg.wnd, win.SW_NORMAL)
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if opts.maxValue < 0 {
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win.SendMessage(dlg.progCtl, win.PBM_SETMARQUEE, 1, 0)
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} else {
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win.SendMessage(dlg.progCtl, win.PBM_SETRANGE32, 0, uintptr(opts.maxValue))
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}
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once.Do(dlg.init.Done)
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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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win.SendMessage(dlg.wnd, win.WM_SYSCOMMAND, win.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 := win.MessageLoop(win.HWND(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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win.SendMessage(d.textCtl, win.WM_SETFONT, font, 1)
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win.SendMessage(d.okBtn, win.WM_SETFONT, font, 1)
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win.SendMessage(d.cancelBtn, win.WM_SETFONT, font, 1)
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win.SendMessage(d.extraBtn, win.WM_SETFONT, font, 1)
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win.SetWindowPos(d.wnd, 0, 0, 0, dpi.scale(281), dpi.scale(133), win.SWP_NOMOVE|win.SWP_NOZORDER)
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win.SetWindowPos(d.textCtl, 0, dpi.scale(12), dpi.scale(10), dpi.scale(241), dpi.scale(16), win.SWP_NOZORDER)
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win.SetWindowPos(d.progCtl, 0, dpi.scale(12), dpi.scale(30), dpi.scale(241), dpi.scale(16), win.SWP_NOZORDER)
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pos := 178
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if d.cancelBtn != 0 {
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win.SetWindowPos(d.cancelBtn, 0, dpi.scale(pos), dpi.scale(58), dpi.scale(75), dpi.scale(24), win.SWP_NOZORDER)
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pos -= 83
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}
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if d.extraBtn != 0 {
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win.SetWindowPos(d.extraBtn, 0, dpi.scale(pos), dpi.scale(58), dpi.scale(75), dpi.scale(24), win.SWP_NOZORDER)
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pos -= 83
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}
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if d.okBtn != 0 {
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win.SetWindowPos(d.okBtn, 0, dpi.scale(pos), dpi.scale(58), dpi.scale(75), dpi.scale(24), win.SWP_NOZORDER)
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pos -= 83
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}
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if pos == 178 {
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win.SetWindowPos(d.wnd, 0, 0, 0, dpi.scale(281), dpi.scale(97), win.SWP_NOMOVE|win.SWP_NOZORDER)
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}
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}
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func progressProc(wnd win.HWND, 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 win.WM_NCCREATE:
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saveBackRef(uintptr(wnd), *lparam)
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dlg = (*progressDialog)(*lparam)
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case win.WM_NCDESTROY:
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deleteBackRef(uintptr(wnd))
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default:
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dlg = (*progressDialog)(loadBackRef(uintptr(wnd)))
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}
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switch msg {
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case win.WM_DESTROY:
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win.PostQuitMessage(0)
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case win.WM_CLOSE:
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dlg.err = ErrCanceled
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win.DestroyWindow(wnd)
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case win.WM_COMMAND:
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switch wparam {
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default:
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return 1
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case win.IDOK, win.IDYES:
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//
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case win.IDCANCEL:
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dlg.err = ErrCanceled
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case win.IDNO:
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dlg.err = ErrExtraButton
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}
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win.DestroyWindow(wnd)
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case win.WM_DPICHANGED:
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dlg.layout(dpi(uint32(wparam) >> 16))
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default:
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return win.DefWindowProc(wnd, msg, wparam, unsafe.Pointer(lparam))
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}
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return 0
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}
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