gime/old/screen.go

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package main
import (
"errors"
"time"
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termbox "github.com/nsf/termbox-go"
)
type Screen interface {
handleKeyEvent(termbox.Event) int
initialize(Bundle) error
drawScreen()
}
const (
ScreenMain = iota
ScreenAbout
ScreenExit
DefaultBg = termbox.ColorBlack
DefaultFg = termbox.ColorWhite
TitleFg = termbox.ColorWhite
TitleBg = termbox.ColorBlue
CursorFg = termbox.ColorBlack
CursorBg = termbox.ColorGreen
)
func (a *AppState) BuildScreens() {
mainScreen := MainScreen{}
aboutScreen := AboutScreen{}
a.screens = append(a.screens, &mainScreen)
a.screens = append(a.screens, &aboutScreen)
}
func (a *AppState) drawBackground(bg termbox.Attribute) {
termbox.Clear(0, bg)
}
func (a *AppState) layoutAndDrawScreen(s Screen) {
a.drawBackground(DefaultBg)
s.drawScreen()
termbox.Flush()
}
func readUserInput(e chan termbox.Event) {
for {
e <- termbox.PollEvent()
}
}
func checkForUpdate(e chan termbox.Event) {
for {
time.Sleep(time.Minute)
// Check if the on-disk tasklist has changed
//app.LoadTasklist()
//app.LoadDoneList()
if false {
e <- termbox.Event{
Type: termbox.EventError,
Err: errors.New("List changed elsewhere"),
}
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}
}
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}
/*
* ViewPort helps keep track of what's being displayed on the screen
*/
type ViewPort struct {
bytesPerRow int
numberOfRows int
firstRow int
}