package main

import (
	"github.com/nsf/termbox-go"
	"gogs.bullercodeworks.com/brian/termbox-util"
)

// Screen TODO: Comment
type Screen interface {
	handleKeyEvent(event termbox.Event) int
	performLayout(style style)
	drawScreen(style style)
	update()
}

// 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)
	if debugMode {
		termboxUtil.DrawStringAtPoint(debugText, 0, 0, style.defaultFg, style.defaultBg)
	}
	termbox.Flush()
}