Пример #1
1
func initGUI() {

	/*
		ff := ui.ListFontFamilies()
		for i := 0; i < ff.NumFamilies(); i++ {
			log.Printf("%3d. Font family '%s'\n", i + 1, ff.Family(i))
		}
	*/

	window := ui.NewWindow("Привет мир!", 800, 480, false)
	window.SetMargined(true)

	progress := ui.NewProgressBar()
	labelTime := ui.NewLabel("")

	labelInfo := ui.NewLabel("Info")
	labelInfoButtonHandler := func(b *ui.Button) {
		labelInfo.SetText("Click button " + b.Text())
	}

	hbox := ui.NewHorizontalBox()
	hbox.SetPadded(true)

	hbox.Append(func() *ui.Box {
		box := ui.NewVerticalBox()
		box.SetPadded(true)

		box.Append(func() *ui.Button {
			button := ui.NewButton("Button 1")
			button.OnClicked(labelInfoButtonHandler)
			return button
		}(), false)
		box.Append(func() *ui.Button {
			button := ui.NewButton("Button 2")
			button.OnClicked(labelInfoButtonHandler)
			return button
		}(), false)
		box.Append(func() *ui.Button {
			button := ui.NewButton("Button 3")
			button.OnClicked(labelInfoButtonHandler)
			return button
		}(), false)
		box.Append(ui.NewHorizontalSeparator(), false)

		label := ui.NewLabel("It's all")
		box.Append(label, true)

		box.Append(func() *ui.Button {
			button := ui.NewButton("Exit")
			button.OnClicked(func(*ui.Button) {
				ui.Quit()
			})
			return button
		}(), false)

		return box
	}(), false)

	areaHandler := NewHistogramAreaHandler(20)
	area := ui.NewArea(areaHandler)

	hbox.Append(func() *ui.Box {
		box := ui.NewVerticalBox()
		box.SetPadded(true)
		box.Append(labelInfo, false)
		box.Append(labelTime, false)

		tab := ui.NewTab()
		tab.Append("Histogram demo", area)
		tab.Append("Controls demo", func() *ui.Box {
			box := ui.NewVerticalBox()
			box.SetPadded(true)

			box.Append(ui.NewEntry(), false)
			box.Append(ui.NewCheckbox("Check it"), false)
			box.Append(func() *ui.RadioButtons {
				radio := ui.NewRadioButtons()
				radio.Append("Radio button 1")
				radio.Append("Radio button 2")
				radio.Append("Radio button 3")
				return radio
			}(), false)
			box.Append(func() *ui.Group {
				combo := ui.NewCombobox()
				combo.Append("First")
				combo.Append("Second")
				combo.Append("Third")
				combo.Append("Fourth")
				combo.OnSelected(func(cb *ui.Combobox) {
					ui.MsgBoxError(window, "OnSelected", "Line #"+strconv.Itoa(cb.Selected()+1))
				})
				group := ui.NewGroup("Can't get text, only index")
				group.SetChild(combo)
				return group
			}(), false)
			box.Append(ui.NewSlider(0, 100), false)
			box.Append(ui.NewSpinbox(0, 10), false)
			box.Append(ui.NewDatePicker(), false)
			box.Append(ui.NewDateTimePicker(), false)

			return box
		}())
		tab.Append("Tab 3", ui.NewLabel("At tab 3"))
		box.Append(tab, true)

		box.Append(progress, false)

		return box
	}(), true)

	window.SetChild(hbox)

	window.OnClosing(func(*ui.Window) bool {
		log.Println("Window close")
		ui.Quit()
		return true
	})
	window.Show()

	progressCounter := 0
	progressTicker := time.NewTicker(time.Millisecond * 50)
	go func() {
		for _ = range progressTicker.C {
			// Что бы записать значение в виджет используем потокобезопасный вызов
			ui.QueueMain(func() {
				progress.SetValue(progressCounter)
			})
			progressCounter++
			if progressCounter > 100 {
				progressCounter = 0
			}
		}
	}()

	timeTicker := time.NewTicker(time.Millisecond * 10)
	go func() {
		for t := range timeTicker.C {
			// Что бы записать значение в виджет используем потокобезопасный вызов
			ui.QueueMain(func() {
				labelTime.SetText(t.Format(time.StampMilli))
			})
		}
	}()

	hystogrammTicker := time.NewTicker(time.Millisecond * 500)
	go func() {
		for _ = range hystogrammTicker.C {
			// Что бы записать значение в виджет используем потокобезопасный вызов
			ui.QueueMain(func() {
				areaHandler.Push(rand.Intn(100))
				area.QueueRedrawAll()
			})
		}
	}()

	log.Println("InitGUI done")
}
// showMessageBoxForNotification shows a generic dialog with the supplied title and bodyText
func showMessageBoxForNotification(title string, bodyText string, window *ui.Window) {
	ui.MsgBoxError(window, title, bodyText)
}
// showMessageBoxForErrors shows an error dialog where its body consists of errors converted to strings
func showMessageBoxForErrors(title string, errors []error, window *ui.Window) {
	ui.MsgBoxError(window, title, convertErrorStringListToString(errors))
}
Пример #4
0
func myMain() {
	var cmd *exec.Cmd
	var timer *time.Timer
	var timerChan <-chan time.Time
	var w *ui.Window

	status := ui.NewLabel("")

	stop := func() {
		if cmd != nil { // stop the command if it's running
			err := cmd.Process.Kill()
			if err != nil {
				ui.MsgBoxError(w,
					fmt.Sprintf("Error killing process: %v", err),
					"You may need to kill it manually.")
			}
			err = cmd.Process.Release()
			if err != nil {
				ui.MsgBoxError(w,
					fmt.Sprintf("Error releasing process: %v", err),
					"")
			}
			cmd = nil
		}
		if timer != nil { // stop the timer if we started it
			timer.Stop()
			timer = nil
			timerChan = nil
		}
		status.SetText("")
	}

	w = ui.NewWindow("wakeup", 400, 100)
	ui.AppQuit = w.Closing // treat application close as main window close
	cmdbox := ui.NewLineEdit(defCmdLine)
	timebox := ui.NewLineEdit(defTime)
	bStart := ui.NewButton("Start")
	bStop := ui.NewButton("Stop")

	// a Stack to keep both buttons at the same size
	btnbox := ui.NewHorizontalStack(bStart, bStop)
	btnbox.SetStretchy(0)
	btnbox.SetStretchy(1)
	// and a Stack around that Stack to keep them at a reasonable size, with space to their right
	btnbox = ui.NewHorizontalStack(btnbox, status)

	// the main layout
	grid := ui.NewGrid(2,
		ui.NewLabel("Command"), cmdbox,
		ui.NewLabel("Time"), timebox,
		ui.Space(), ui.Space(), // the Space on the right will consume the window blank space
		ui.Space(), btnbox)
	grid.SetStretchy(2, 1) // make the Space noted above consume
	grid.SetFilling(0, 1)  // make the two textboxes grow horizontally
	grid.SetFilling(1, 1)

	w.Open(grid)

mainloop:
	for {
		select {
		case <-w.Closing:
			break mainloop
		case <-bStart.Clicked:
			stop() // only one alarm at a time
			alarmTime, err := time.Parse(timeFmt, timebox.Text())
			if err != nil {
				ui.MsgBoxError(w,
					fmt.Sprintf("Error parsing time %q: %v", timebox.Text(), err),
					fmt.Sprintf("Make sure your time is in the form %q (without quotes).", timeFmt))
				continue
			}
			now := time.Now()
			later := bestTime(now, alarmTime)
			timer = time.NewTimer(later.Sub(now))
			timerChan = timer.C
			status.SetText("Started")
		case <-timerChan:
			cmd = exec.Command("/bin/sh", "-c", "exec "+cmdbox.Text())
			// keep stdin /dev/null in case user wants to run multiple alarms on one instance (TODO should I allow this program to act as a pipe?)
			// keep stdout /dev/null to avoid stty mucking
			cmd.Stderr = os.Stderr
			err := cmd.Start()
			status.SetText("Firing")
			if err != nil {
				ui.MsgBoxError(w,
					fmt.Sprintf("Error running program: %v", err),
					"")
				cmd = nil
				status.SetText("")
			}
			timer = nil
			timerChan = nil
		case <-bStop.Clicked:
			stop()
		}
	}

	// clean up
	stop()
}