iris/source/gui.ccp

#pypp 0
#include <iris.hh>
#include <devices.hh>
#include <keys.hh>

// Interface: two way, started by ui.

// From ui to application.
// ~0: request reset.
// ~1: set reply cap; send current state.
// inum: event (with optional value) for input number num.

// From application to ui.
// onum: event (with optional value) for output number num.

// For now, the code is hardwired to the alarm clock interface.
enum outs:
	CURRENT_TIME
	ALARM

enum ins:
	TOTAL_TIME
	START

static Iris::Display display
static Iris::Buzzer buzzer
static unsigned *framebuffer
static unsigned alarming

enum PD:
	UI
	KBD

static char const *chardef =
	".###.."
	"#...#."
	"#...#."
	"#...#."
	"#...#."
	"#...#."
	".###.."
	"......"

	"..#..."
	"..#..."
	"..#..."
	"..#..."
	"..#..."
	"..#..."
	"..#..."
	"......"

	".###.."
	"#...#."
	"....#."
	"...#.."
	"..#..."
	".#...."
	"#####."
	"......"

	".###.."
	"#...#."
	"....#."
	"..##.."
	"....#."
	"#...#."
	".###.."
	"......"

	"#...#."
	"#...#."
	"#...#."
	"#####."
	"....#."
	"....#."
	"....#."
	"......"

	"#####."
	"#....."
	"####.."
	"....#."
	"....#."
	"....#."
	"####.."
	"......"

	"....#."
	"...#.."
	"..#..."
	".###.."
	"#...#."
	"#...#."
	".###.."
	"......"

	"#####."
	"....#."
	"...#.."
	"..#..."
	".#...."
	"#....."
	"#....."
	"......"

	".###.."
	"#...#."
	"#...#."
	".###.."
	"#...#."
	"#...#."
	".###.."
	"......"

	".###.."
	"#...#."
	"#...#."
	".###.."
	"..#..."
	".#...."
	"#....."
	"......"

	"......"
	"......"
	"..#..."
	"......"
	"......"
	"..#..."
	"......"
	"......"

static void draw_pixel (unsigned x, unsigned y, bool set):
	for unsigned ty = 0; ty < 8; ++ty:
		for unsigned tx = 0; tx < 8; ++tx:
			framebuffer[320 * (y + ty) + x + tx] = (set ? 0xffffff : 0x000000)

static void draw_num (bool upper, unsigned x0, unsigned d):
	for unsigned y = 0; y < 8; ++y:
		for unsigned x = 0; x < 6; ++x:
			draw_pixel (x * 10 + 10 + x0 * 60, y * 10 + (upper ? 30 : 50 + 80), chardef[(d * 8 + y) * 6 + x] == '#')

static void draw_time (bool upper, unsigned time):
	unsigned min = time / 60
	time %= 60
	if min >= 100:
		min = 99
		time = 99
	draw_num (upper, 0, min / 10)
	draw_num (upper, 1, min % 10)
	draw_num (upper, 3, time / 10)
	draw_num (upper, 4, time % 10)

static void do_alarm ():
	static unsigned tune[] = { 4, 6, 6, 5, 7, 7 }
	if ++alarming > sizeof (tune) / sizeof (*tune):
		alarming = 1
	buzzer.beep (tune[alarming - 1] * 220, 300, ~0)
	Iris::my_receiver.set_alarm (HZ / 3)

Iris::Num start ():
	display = Iris::my_parent.get_capability <Iris::Display> ()
	Iris::Setting bright = Iris::my_parent.get_capability <Iris::Setting> ()
	Iris::Keyboard keyboard = Iris::my_parent.get_capability <Iris::Keyboard> ()
	buzzer = Iris::my_parent.get_capability <Iris::Buzzer> ()
	Iris::UI app = Iris::my_parent.get_capability <Iris::UI> ()

	framebuffer = (unsigned *)0x15000
	Iris::Caps fb = display.map_fb ((unsigned)framebuffer)

	unsigned screen_max = bright.get_range ()
	bright.set (0)
	bool screen_on = false

	Iris::Cap cb = Iris::my_receiver.create_capability (UI)
	app.get_state (cb.copy ())
	Iris::free_cap (cb)

	cb = Iris::my_receiver.create_capability (KBD)
	keyboard.set_cb (cb.copy ())
	Iris::free_cap (cb)

	draw_num (false, 2, 10)
	draw_num (true, 2, 10)

	unsigned total_time = 0
	alarming = 0

	Iris::my_parent.init_done ()

	while true:
		Iris::wait ()
		switch Iris::recv.protected_data.l:
			case ~0:
				// Alarm.
				if alarming:
					do_alarm ()
				break
			case UI:
				switch Iris::recv.data[0].l:
					case CURRENT_TIME:
						draw_time (false, Iris::recv.data[1].l)
						break
					case ALARM:
						do_alarm ()
						break
					case TOTAL_TIME | Iris::UI::INPUT:
						total_time = Iris::recv.data[1].l
						draw_time (true, total_time)
						break
					case START | Iris::UI::INPUT:
						break
				break
			case KBD:
				if Iris::recv.data[0].l & Iris::Keyboard::RELEASE:
					break
				alarming = 0
				switch Iris::recv.data[0].l:
					case Key::VOLUME_UP:
						total_time += 60
						draw_time (true, total_time)
						app.event (TOTAL_TIME, total_time)
						break
					case Key::VOLUME_DOWN:
						if total_time < 60:
							total_time = 0
						else:
							total_time -= 60
						draw_time (true, total_time)
						app.event (TOTAL_TIME, total_time)
						break
					case Key::UP:
						total_time += 10
						draw_time (true, total_time)
						app.event (TOTAL_TIME, total_time)
						break
					case Key::DOWN:
						if total_time < 10:
							total_time = 0
						else:
							total_time -= 10
						draw_time (true, total_time)
						app.event (TOTAL_TIME, total_time)
						break
					case Key::LEFT:
						if total_time < 1:
							total_time = 0
						else:
							total_time -= 1
						draw_time (true, total_time)
						app.event (TOTAL_TIME, total_time)
						break
					case Key::RIGHT:
						total_time += 1
						draw_time (true, total_time)
						app.event (TOTAL_TIME, total_time)
						break
					case Key::ENTER:
						app.event (START)
						break
					case Key::BACKSPACE:
						screen_on = !screen_on
						if screen_on:
							bright.set (screen_max)
						else:
							bright.set (0)
						break