package main

import "os"
import "fmt"
import "image"
import "math/rand"
import _ "image/png"
import "git.tebibyte.media/sashakoshka/stone"
import _ "git.tebibyte.media/sashakoshka/stone/backends/x"

var application = &stone.Application { }

func main () {
	application.SetTitle("style demo")
	application.SetSize(11, 8)

	iconFile16, err := os.Open("assets/scaffold16.png")
	if err != nil { panic(err) }
	icon16, _, err := image.Decode(iconFile16)
	if err != nil { panic(err) }
	iconFile16.Close()
	iconFile32, err := os.Open("assets/scaffold32.png")
	if err != nil { panic(err) }
	icon32, _, err := image.Decode(iconFile32)
	if err != nil { panic(err) }
	iconFile16.Close()
	
	application.SetIcon([]image.Image { icon16, icon32 })
	
	application.OnStart(redraw)
	application.OnResize(redraw)
	application.OnPress(onPress)
	
	err = application.Run()
	if err != nil { panic(err) }
}

func onPress (button stone.Button, modifiers stone.Modifiers) {
	redraw()
	application.Draw()
}

func redraw () {
	width, _ := application.Size()
	application.SetDot(0, 0)
	fmt.Fprint (
		application,
		"normal\n",
		"bold\n",
		"italic\n",
		"underline\n",
		"all 3\n",
		"highlighted\n",
		"all 4\n",
		"highlight?")
	fillStyle(0, width, stone.StyleNormal)
	fillStyle(1, width, stone.StyleBold)
	fillStyle(2, width, stone.StyleItalic)
	fillStyle(3, width, stone.StyleUnderline)
	fillStyle(4, width, stone.StyleBoldItalic | stone.StyleUnderline)
	fillStyle(5, width, stone.StyleHighlight)
	fillStyle(6, width, stone.StyleBoldItalic | stone.StyleUnderline |
		stone.StyleHighlight)

	if rand.Int() % 2 == 0 {
		fillStyle(7, width, stone.StyleNormal)
	} else {
		fillStyle(7, width, stone.StyleHighlight)
	}
}

func fillStyle (yOffset, width int, style stone.Style) {
	for x := 0; x < width; x ++ {
		application.SetStyle(x, yOffset, style)
		application.SetColor(x, yOffset, stone.Color(x % 7 + 1))
	}
}