Initial Commit

main.go

@@ -0,0 +1,76 @@
+package main
+
+import (
+	"os"
+
+	"github.com/nsf/termbox-go"
+)
+
+func main() {
+	//battPct = getBatteryPct()
+	//fmt.Printf("Battery: %d\n", getBatteryPct())
+	var err error
+
+	err = termbox.Init()
+	if err != nil {
+		panic(err)
+	}
+	defer termbox.Close()
+
+	style := defaultStyle()
+	termbox.SetOutputMode(termbox.Output256)
+	mainLoop(style)
+}
+
+func mainLoop(style style) {
+	screens := defaultScreens()
+	displayScreen := screens[mainScreenIndex]
+	layoutAndDrawScreen(displayScreen, style)
+
+	for {
+		event := termbox.PollEvent()
+		if event.Type == termbox.EventKey {
+			if event.Key == termbox.KeyCtrlC {
+				break
+			}
+			newScreenIndex := displayScreen.handleKeyEvent(event)
+			if newScreenIndex < len(screens) {
+				displayScreen = screens[newScreenIndex]
+				layoutAndDrawScreen(displayScreen, style)
+			} else if newScreenIndex == exitScreenIndex {
+				break
+			}
+		}
+		if event.Type == termbox.EventResize || event.Type == termbox.EventNone {
+			layoutAndDrawScreen(displayScreen, style)
+		}
+	}
+}
+
+// Screens Setup
+const (
+	mainScreenIndex = iota
+	//aboutScreenIndex
+	exitScreenIndex
+)
+
+func defaultScreens() []Screen {
+	//var view_port ViewPort
+	mainScreen := mainScreen{}
+	//aboutScreen := aboutScreen{}
+	screens := [...]Screen{
+		&mainScreen,
+		//	&aboutScreen,
+	}
+	return screens[:]
+}
+
+// WriteToLog Writes to the Log
+func WriteToLog(d string) {
+	f, err := os.OpenFile("system-status.log", os.O_CREATE|os.O_APPEND|os.O_WRONLY, 0664)
+	if err != nil {
+		panic(err)
+	}
+	f.WriteString(d)
+	f.Close()
+}

screen.go

@@ -0,0 +1,28 @@
+package main
+
+import "github.com/nsf/termbox-go"
+
+// Screen TODO: Comment
+type Screen interface {
+	handleKeyEvent(event termbox.Event) int
+	performLayout(style style)
+	drawScreen(style style)
+}
+
+// ViewPort TODO: Comment
+type ViewPort struct {
+	bytesPerRow  int
+	numberOfRows int
+	firstRow      int
+}
+
+func drawBackground(bg termbox.Attribute) {
+	termbox.Clear(0, bg)
+}
+
+func layoutAndDrawScreen(screen Screen, style style) {
+	screen.performLayout(style)
+	drawBackground(style.defaultBg)
+	screen.drawScreen(style)
+	termbox.Flush()
+}

screen_main.go

@@ -0,0 +1,78 @@
+package main
+
+import (
+	"fmt"
+	"os/exec"
+	"strconv"
+	"strings"
+	"time"
+
+	"gogs.bullercodeworks.com/brian/termbox-util"
+
+	"github.com/nsf/termbox-go"
+)
+
+type mainScreen struct {
+	initialized bool
+	tabIdx      int
+	battStat    *termboxUtil.ProgressBar
+}
+
+func (screen *mainScreen) handleKeyEvent(event termbox.Event) int {
+	if event.Type == termbox.EventKey {
+		if event.Key == termbox.KeyEsc {
+			return exitScreenIndex
+		} else if event.Ch == 'r' {
+			// Refresh data
+			screen.battStat.SetProgress(getBatteryPct())
+		} else if event.Ch == 'q' {
+			return exitScreenIndex
+		}
+	}
+	return mainScreenIndex
+}
+
+func (screen *mainScreen) performLayout(style style) {
+	if !screen.initialized {
+		w, _ := termbox.Size()
+		screen.battStat = termboxUtil.CreateProgressBar(100, w-14, 1, style.defaultFg, style.defaultBg)
+		screen.battStat.SetProgress(getBatteryPct())
+	}
+}
+
+func (screen *mainScreen) drawScreen(style style) {
+	w, h := termbox.Size()
+	termboxUtil.DrawStringAtPoint(time.Now().Format("15:04 MST"), 0, 0, style.defaultFg, style.defaultBg)
+	termboxUtil.DrawStringAtPoint(time.Now().Format("02 Jan 2006"), 0, 1, style.defaultFg, style.defaultBg)
+	screen.battStat.Draw()
+	termboxUtil.DrawStringAtPoint(fmt.Sprintf("% 3d%s", screen.battStat.GetPercent(), "%"),
+		screen.battStat.GetX()+screen.battStat.GetWidth(),
+		screen.battStat.GetY(), style.defaultFg, style.defaultBg)
+	quitTxt := "(q)uit"
+	termboxUtil.DrawStringAtPoint(quitTxt, (w - len(quitTxt)), h-1, style.defaultFg, style.defaultBg)
+}
+
+func getBatteryPct() int {
+	powerApp := "upower"
+	powerArg1 := "-i"
+	powerArg2 := "/org/freedesktop/UPower/devices/battery_BAT0"
+	cmd := exec.Command(powerApp, powerArg1, powerArg2)
+	stdout, err := cmd.Output()
+	if err != nil {
+		return -1
+	}
+	tst := string(stdout)
+	for _, k := range strings.Split(tst, "\n") {
+		pair := strings.Split(k, ":")
+		if len(pair) > 1 {
+			pair[0] = strings.Trim(pair[0], " ")
+			pair[1] = strings.Trim(pair[1], " %")
+			if pair[0] == "percentage" {
+				if pct, err := strconv.Atoi(pair[1]); err == nil {
+					return pct
+				}
+			}
+		}
+	}
+	return -1
+}

style.go

@@ -0,0 +1,23 @@
+package main
+
+import "github.com/nsf/termbox-go"
+
+type style struct {
+	defaultBg termbox.Attribute
+	defaultFg termbox.Attribute
+	titleBg   termbox.Attribute
+	titleFg   termbox.Attribute
+	cursorBg  termbox.Attribute
+	cursorFg  termbox.Attribute
+}
+
+func defaultStyle() style {
+	var style style
+	style.defaultBg = termbox.ColorBlack
+	style.defaultFg = termbox.ColorWhite
+	style.titleBg = style.defaultBg
+	style.titleFg = style.defaultFg | termbox.AttrBold
+	style.cursorBg = termbox.ColorWhite
+	style.cursorFg = termbox.ColorBlack
+	return style
+}

system-status.log

@@ -0,0 +1,3 @@
+Refreshing Battery: 70%
+From ProgBar: 70%
+INIT: From ProgBar: 70%