241 lines
6 KiB
Go
241 lines
6 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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)
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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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}
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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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err := progressDlg(opts, dlg)
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if cerr := opts.ctx.Err(); cerr != nil {
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err = cerr
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}
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dlg.err = err
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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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func progressDlg(opts options, dlg *progressDialog) (err error) {
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defer setup()()
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font := getFont()
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defer font.Delete()
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defWindowProc := defWindowProc.Addr()
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var wnd, textCtl, progCtl uintptr
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var okBtn, cancelBtn, extraBtn uintptr
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layout := func(dpi dpi) {
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hfont := font.ForDPI(dpi)
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sendMessage.Call(textCtl, 0x0030 /* WM_SETFONT */, hfont, 1)
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sendMessage.Call(okBtn, 0x0030 /* WM_SETFONT */, hfont, 1)
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sendMessage.Call(cancelBtn, 0x0030 /* WM_SETFONT */, hfont, 1)
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setWindowPos.Call(wnd, 0, 0, 0, dpi.Scale(281), dpi.Scale(141), 0x6) // SWP_NOZORDER|SWP_NOMOVE
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setWindowPos.Call(textCtl, 0, dpi.Scale(12), dpi.Scale(10), dpi.Scale(241), dpi.Scale(16), 0x4) // SWP_NOZORDER
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setWindowPos.Call(progCtl, 0, dpi.Scale(12), dpi.Scale(30), dpi.Scale(241), dpi.Scale(24), 0x4) // SWP_NOZORDER
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if extraBtn == 0 {
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setWindowPos.Call(okBtn, 0, dpi.Scale(95), dpi.Scale(66), dpi.Scale(75), dpi.Scale(24), 0x4) // SWP_NOZORDER
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setWindowPos.Call(cancelBtn, 0, dpi.Scale(178), dpi.Scale(66), dpi.Scale(75), dpi.Scale(24), 0x4) // SWP_NOZORDER
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} else {
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sendMessage.Call(extraBtn, 0x0030 /* WM_SETFONT */, hfont, 1)
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setWindowPos.Call(okBtn, 0, dpi.Scale(12), dpi.Scale(66), dpi.Scale(75), dpi.Scale(24), 0x4) // SWP_NOZORDER
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setWindowPos.Call(extraBtn, 0, dpi.Scale(95), dpi.Scale(66), dpi.Scale(75), dpi.Scale(24), 0x4) // SWP_NOZORDER
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setWindowPos.Call(cancelBtn, 0, dpi.Scale(178), dpi.Scale(66), dpi.Scale(75), dpi.Scale(24), 0x4) // SWP_NOZORDER
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}
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}
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proc := func(wnd uintptr, msg uint32, wparam, lparam uintptr) uintptr {
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switch msg {
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case 0x0002: // WM_DESTROY
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postQuitMessage.Call(0)
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case 0x0010: // WM_CLOSE
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err = ErrCanceled
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destroyWindow.Call(wnd)
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case 0x0111: // WM_COMMAND
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switch wparam {
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default:
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return 1
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case 1, 6: // IDOK, IDYES
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//
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case 2: // IDCANCEL
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err = ErrCanceled
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case 7: // IDNO
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err = ErrExtraButton
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}
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destroyWindow.Call(wnd)
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case 0x02e0: // WM_DPICHANGED
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layout(dpi(uint32(wparam) >> 16))
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default:
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res, _, _ := syscall.Syscall6(defWindowProc, 4, wnd, uintptr(msg), wparam, lparam, 0, 0)
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return res
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}
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return 0
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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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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(proc))
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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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wnd, _, _ = createWindowEx.Call(0x10101, // WS_EX_CONTROLPARENT|WS_EX_WINDOWEDGE|WS_EX_DLGMODALFRAME
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cls, strptr(*opts.title),
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0x84c80000, // WS_POPUPWINDOW|WS_CLIPSIBLINGS|WS_DLGFRAME
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0x80000000, // CW_USEDEFAULT
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0x80000000, // CW_USEDEFAULT
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281, 141, 0, 0, instance, 0)
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textCtl, _, _ = createWindowEx.Call(0,
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strptr("STATIC"), 0,
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0x5002e080, // WS_CHILD|WS_VISIBLE|WS_GROUP|SS_WORDELLIPSIS|SS_EDITCONTROL|SS_NOPREFIX
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12, 10, 241, 16, wnd, 0, instance, 0)
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var flags uintptr = 0x50000001 // WS_CHILD|WS_VISIBLE|PBS_SMOOTH
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if opts.maxValue < 0 {
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flags |= 0x8 // PBS_MARQUEE
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}
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progCtl, _, _ = createWindowEx.Call(0,
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strptr("msctls_progress32"), // PROGRESS_CLASS
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0, flags,
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12, 30, 241, 24, wnd, 0, instance, 0)
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okBtn, _, _ = createWindowEx.Call(0,
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strptr("BUTTON"), strptr(*opts.okLabel),
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0x58030001, // WS_CHILD|WS_VISIBLE|WS_DISABLED|WS_GROUP|WS_TABSTOP|BS_DEFPUSHBUTTON
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12, 66, 75, 24, wnd, 1 /* IDOK */, instance, 0)
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cancelBtn, _, _ = createWindowEx.Call(0,
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strptr("BUTTON"), strptr(*opts.cancelLabel),
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0x50010000, // WS_CHILD|WS_VISIBLE|WS_GROUP|WS_TABSTOP
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12, 66, 75, 24, wnd, 2 /* IDCANCEL */, instance, 0)
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if opts.extraButton != nil {
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extraBtn, _, _ = createWindowEx.Call(0,
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strptr("BUTTON"), strptr(*opts.extraButton),
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0x50010000, // WS_CHILD|WS_VISIBLE|WS_GROUP|WS_TABSTOP
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12, 66, 75, 24, wnd, 7 /* IDNO */, instance, 0)
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}
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layout(getDPI(wnd))
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centerWindow(wnd)
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showWindow.Call(wnd, 1 /* SW_SHOWNORMAL */, 0)
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if opts.maxValue < 0 {
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sendMessage.Call(progCtl, 0x40a /* PBM_SETMARQUEE */, 1, 0)
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} else {
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sendMessage.Call(progCtl, 0x406 /* PBM_SETRANGE32 */, 0, uintptr(opts.maxValue))
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}
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dlg.prog = progCtl
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dlg.text = textCtl
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dlg.ok = okBtn
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dlg.wnd = wnd
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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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sendMessage.Call(wnd, 0x0112 /* WM_SYSCOMMAND */, 0xf060 /* 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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// set default values
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err = nil
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if err := messageLoop(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 err
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}
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type progressDialog struct {
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err error
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done chan struct{}
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init sync.WaitGroup
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prog uintptr
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text uintptr
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wnd uintptr
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ok uintptr
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max int
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}
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func (d *progressDialog) Close() error {
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sendMessage.Call(d.wnd, 0x0112 /* WM_SYSCOMMAND */, 0xf060 /* SC_CLOSE */, 0)
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<-d.done
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return d.err
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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.text, 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.prog, 0x402 /* PBM_SETPOS */, uintptr(value), 0)
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if value >= d.max {
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enableWindow.Call(d.ok, 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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