done

frontend/window.go

@@ -0,0 +1,154 @@
+package frontend
+
+import (
+	"fmt"
+	"time"
+
+	"regexp"
+
+	"github.com/andlabs/ui"
+	"github.com/tonychee7000/Arremi/consts"
+	"github.com/tonychee7000/Arremi/serialPort"
+	"github.com/tonychee7000/arremi/backend"
+)
+
+// WindowMain is to show the UI
+func WindowMain() {
+	// Let backend stop
+	//var ch = make(chan int)
+
+	var errCh = make(chan error, 0)
+	var chCon = make(chan int, 1)
+	var chSerialName = make(chan string, 1)
+	var serialList []string
+
+	window := ui.NewWindow(consts.WindowTitle, 300, 100, false)
+
+	if backend.MIDIError != nil {
+		ui.MsgBox(window, "MIDI Failure",
+			fmt.Sprint("MIDI driver initialize failed: ", backend.MIDIError))
+		ui.Quit()
+	}
+
+	labelSerialSelection := ui.NewLabel("Serial Port")
+	serialSelection := ui.NewCombobox()
+	buttonRefresh := ui.NewButton("Refresh")
+	buttonRun := ui.NewCheckbox("Run")
+	labelMidiActive := ui.NewLabel("MIDI Active  ")
+	labelMidiSignal := ui.NewLabel(consts.MIDISignalOff)
+	labelHint := ui.NewLabel(
+		fmt.Sprint(
+			"HINT:\nBaudrate of Arduino USB serial port should be set to ",
+			consts.SerialBaudrate, " by using\n\n\tSerial.begin(", consts.SerialBaudrate, ")",
+		),
+	)
+
+	serialList, err := loadSerial(serialSelection, buttonRun)
+
+	if err != nil {
+		ui.MsgBox(window, "Serial Failure",
+			fmt.Sprint("Cannot list serial ports for reason: ", err))
+		ui.Quit()
+	}
+
+	buttonRefresh.OnClicked(func(*ui.Button) {
+		serialList, err = loadSerial(serialSelection, buttonRun)
+		if err != nil {
+			ui.MsgBox(window, "Serial Failure",
+				fmt.Sprint("Cannot list serial ports for reason: ", err))
+			ui.Quit()
+		}
+	})
+
+	buttonRun.OnToggled(func(*ui.Checkbox) {
+		if buttonRun.Checked() {
+			serialSelection.Disable()
+			buttonRefresh.Disable()
+			chSerialName <- serialList[serialSelection.Selected()]
+		} else {
+			serialSelection.Enable()
+			buttonRefresh.Enable()
+			chCon <- 1
+		}
+	})
+
+	mainBox := ui.NewVerticalBox()
+	topBox := ui.NewHorizontalBox()
+	buttomBox := ui.NewHorizontalBox()
+
+	topBox.Append(serialSelection, true)
+	topBox.Append(buttonRefresh, false)
+	topBox.Append(ui.NewLabel("  "), false)
+	topBox.Append(buttonRun, false)
+
+	buttomBox.Append(labelSerialSelection, false)
+	buttomBox.Append(ui.NewHorizontalSeparator(), true)
+	buttomBox.Append(labelMidiActive, false)
+	buttomBox.Append(labelMidiSignal, false)
+
+	mainBox.Append(ui.NewHorizontalBox(), true)
+	mainBox.Append(buttomBox, false)
+	mainBox.Append(topBox, false)
+	mainBox.Append(labelHint, true)
+	mainBox.Append(ui.NewHorizontalBox(), true)
+
+	window.SetMargined(true)
+	window.SetChild(mainBox)
+	window.OnClosing(func(*ui.Window) bool {
+		if buttonRun.Checked() {
+			return false
+		}
+		ui.Quit()
+		return true
+	})
+
+	go func() {
+		for {
+			select {
+			case err := <-errCh:
+				ui.QueueMain(func() {
+					if err != nil &&
+						!regexp.MustCompile("file already closed").MatchString(err.Error()) {
+						ui.MsgBox(window, "Backend Failure", fmt.Sprint(err))
+					}
+					serialSelection.Enable()
+					buttonRefresh.Enable()
+					buttonRun.SetChecked(false)
+					labelMidiSignal.SetText(consts.MIDISignalOff)
+				})
+			case <-backend.MidiDev.Signal:
+				ui.QueueMain(func() {
+					labelMidiSignal.SetText(consts.MIDISignalOn)
+				})
+			case <-time.After(100 * time.Millisecond):
+				ui.QueueMain(func() {
+					labelMidiSignal.SetText(consts.MIDISignalOff)
+				})
+			}
+		}
+	}()
+
+	go func() {
+		for {
+			backend.Run(chSerialName, chCon, errCh)
+		}
+	}()
+
+	window.Show()
+}
+
+func loadSerial(serialSelection *ui.Combobox, buttonRun *ui.Checkbox) ([]string, error) {
+	serialList, err := serialPort.GetSerialPorts()
+
+	if len(serialList) == 0 {
+		buttonRun.Disable()
+		serialSelection.Append("-- No Arduino Found --")
+		serialSelection.Disable()
+	} else {
+		for _, seiral := range serialList {
+			serialSelection.Append(seiral)
+		}
+	}
+	serialSelection.SetSelected(0)
+	return serialList, err
+}