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// Copyright 2016 The Tcell Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use file except in compliance with the License.
// You may obtain a copy of the license at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package main
import (
"fmt"
"os"
"github.com/gdamore/tcell"
"github.com/gdamore/tcell/views"
)
var app = &views.Application{}
var window = &mainWindow{}
type model struct {
x int
y int
endx int
endy int
hide bool
enab bool
loc string
}
func (m *model) GetBounds() (int, int) {
return m.endx, m.endy
}
func (m *model) MoveCursor(offx, offy int) {
m.x += offx
m.y += offy
m.limitCursor()
}
func (m *model) limitCursor() {
if m.x < 0 {
m.x = 0
}
if m.x > m.endx-1 {
m.x = m.endx - 1
}
if m.y < 0 {
m.y = 0
}
if m.y > m.endy-1 {
m.y = m.endy - 1
}
m.loc = fmt.Sprintf("Cursor is %d,%d", m.x, m.y)
}
func (m *model) GetCursor() (int, int, bool, bool) {
return m.x, m.y, m.enab, !m.hide
}
func (m *model) SetCursor(x int, y int) {
m.x = x
m.y = y
m.limitCursor()
}
func (m *model) GetCell(x, y int) (rune, tcell.Style, []rune, int) {
dig := []rune{'0', '1', '2', '3', '4', '5', '6', '7', '8', '9'}
var ch rune
style := tcell.StyleDefault
if x >= 60 || y >= 15 {
return ch, style, nil, 1
}
colors := []tcell.Color{
tcell.ColorWhite,
tcell.ColorGreen,
tcell.ColorMaroon,
tcell.ColorNavy,
tcell.ColorOlive,
}
if y == 0 && x < len(m.loc) {
style = style.
Foreground(tcell.ColorWhite).
Background(tcell.ColorLime)
ch = rune(m.loc[x])
} else {
ch = dig[(x)%len(dig)]
style = style.
Foreground(colors[(y)%len(colors)]).
Background(tcell.ColorBlack)
}
return ch, style, nil, 1
}
type mainWindow struct {
main *views.CellView
keybar *views.SimpleStyledText
status *views.SimpleStyledTextBar
model *model
views.Panel
}
func (a *mainWindow) HandleEvent(ev tcell.Event) bool {
switch ev := ev.(type) {
case *tcell.EventKey:
switch ev.Key() {
case tcell.KeyCtrlL:
app.Refresh()
return true
case tcell.KeyRune:
switch ev.Rune() {
case 'Q', 'q':
app.Quit()
return true
case 'S', 's':
a.model.hide = false
a.updateKeys()
return true
case 'H', 'h':
a.model.hide = true
a.updateKeys()
return true
case 'E', 'e':
a.model.enab = true
a.updateKeys()
return true
case 'D', 'd':
a.model.enab = false
a.updateKeys()
return true
}
}
}
return a.Panel.HandleEvent(ev)
}
func (a *mainWindow) Draw() {
a.status.SetLeft(a.model.loc)
a.Panel.Draw()
}
func (a *mainWindow) updateKeys() {
m := a.model
w := "[%AQ%N] Quit"
if !m.enab {
w += " [%AE%N] Enable cursor"
} else {
w += " [%AD%N] Disable cursor"
if !m.hide {
w += " [%AH%N] Hide cursor"
} else {
w += " [%AS%N] Show cursor"
}
}
a.keybar.SetMarkup(w)
app.Update()
}
func main() {
window.model = &model{endx: 60, endy: 15}
title := views.NewTextBar()
title.SetStyle(tcell.StyleDefault.
Background(tcell.ColorTeal).
Foreground(tcell.ColorWhite))
title.SetCenter("CellView Test", tcell.StyleDefault)
title.SetRight("Example v1.0", tcell.StyleDefault)
window.keybar = views.NewSimpleStyledText()
window.keybar.RegisterStyle('N', tcell.StyleDefault.
Background(tcell.ColorSilver).
Foreground(tcell.ColorBlack))
window.keybar.RegisterStyle('A', tcell.StyleDefault.
Background(tcell.ColorSilver).
Foreground(tcell.ColorRed))
window.status = views.NewSimpleStyledTextBar()
window.status.SetStyle(tcell.StyleDefault.
Background(tcell.ColorBlue).
Foreground(tcell.ColorYellow))
window.status.RegisterLeftStyle('N', tcell.StyleDefault.
Background(tcell.ColorYellow).
Foreground(tcell.ColorBlack))
window.status.SetLeft("My status is here.")
window.status.SetRight("%UCellView%N demo!")
window.status.SetCenter("Cen%ST%Ner")
window.main = views.NewCellView()
window.main.SetModel(window.model)
window.main.SetStyle(tcell.StyleDefault.
Background(tcell.ColorBlack))
window.SetMenu(window.keybar)
window.SetTitle(title)
window.SetContent(window.main)
window.SetStatus(window.status)
window.updateKeys()
app.SetStyle(tcell.StyleDefault.
Foreground(tcell.ColorWhite).
Background(tcell.ColorBlack))
app.SetRootWidget(window)
if e := app.Run(); e != nil {
fmt.Fprintln(os.Stderr, e.Error())
os.Exit(1)
}
}
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