136 lines
2.7 KiB
Go
136 lines
2.7 KiB
Go
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package main
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import (
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"log"
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"os"
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"time"
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"strconv"
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"unicode/utf8"
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"github.com/gdamore/tcell/v2"
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)
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const (
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dayWidth = 2
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gapWidth = 1
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monthWidth = 7*dayWidth + 6*gapWidth
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monthHeight = (31+6+(7-1))/7 + 2
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)
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var (
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months = [...]string{"", "Јануар", "Фебруар", "Март", "Април", "Мај", "Јун",
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"Јул", "Август", "Септембар", "Октобар", "Новембар", "Децембар"}
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weekdays = [...]string{"Недеља", "Понедељак", "Уторак", "Среда", "Четвртак",
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"Петак", "Субота"}
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)
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var (
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wall tcell.Screen
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defStyle tcell.Style
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selStyle tcell.Style
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)
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var (
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selTime time.Time
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today time.Time
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)
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func max(a, b int) int {
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if a > b {
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return a
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}
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return b
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}
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func date(year int, month time.Month, day int) time.Time {
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return time.Date(year, month, day, 0, 0, 0, 0, time.Local)
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}
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func centeredText(s string, x, y, width int, scr tcell.Screen, style tcell.Style) {
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start := x + max((width - utf8.RuneCountInString(s)) / 2, 0)
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i := 0
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for _, char := range s {
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if i >= width {
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break;
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}
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scr.SetContent(start + i, y, char, nil, style)
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i++
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}
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}
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func drawMonth(m time.Month, x, y int) {
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centeredText(months[m], x, y, monthWidth, wall, defStyle)
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for i := 1; i <= 7; i++ {
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centeredText(weekdays[i % 7], x + (i - 1) * (dayWidth + gapWidth), y + 1, dayWidth, wall, defStyle)
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}
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dayNum := date(selTime.Year(), m + 1, 0).Day()
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for i := 1; i <= dayNum; i++ {
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weekday := int(date(selTime.Year(), m, i).Weekday())
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style := defStyle
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if selTime.Day() == i && selTime.Month() == m {
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style = selStyle
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}
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centeredText(
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strconv.Itoa(i),
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x + ((weekday - 1 + 7) % 7) * (dayWidth + gapWidth),
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y + 2,
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2,
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wall,
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style)
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if weekday == 0 {
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y++
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}
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}
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}
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func drawWall() {
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}
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func main() {
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today = time.Now()
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selTime = today
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var err error
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wall, err = tcell.NewScreen()
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if err != nil {
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log.Fatalf("%+v", err)
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}
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if err := wall.Init(); err != nil {
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log.Fatalf("%+v", err)
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}
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defStyle = tcell.StyleDefault.Background(tcell.ColorReset).Foreground(tcell.ColorReset)
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selStyle = tcell.StyleDefault.Background(tcell.ColorReset).Foreground(tcell.GetColor("green")).Bold(true)
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wall.SetStyle(defStyle)
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wall.Clear()
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drawMonth(time.January, 0, 0)
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drawMonth(time.July, monthWidth * 2, 0)
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quit := func() {
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wall.Fini()
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os.Exit(0)
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}
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for {
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// Update screen
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wall.Show()
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// Poll event
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ev := wall.PollEvent()
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// Process event
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switch ev := ev.(type) {
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case *tcell.EventResize:
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wall.Sync()
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case *tcell.EventKey:
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if ev.Key() == tcell.KeyEscape || ev.Key() == tcell.KeyCtrlC ||
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ev.Rune() == 'Q' || ev.Rune() == 'q' {
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quit()
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}
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}
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}
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}
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