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()
}