.{memory} := @use("../../stn/src/lib.hb")
software := @use("software.hb")
image := @use("image.hb")

// default mode
mode := software

init := mode.init
doublebuffer := mode.doublebuffer

Surface := struct {
	buf: ^Color,
	width: int,
	height: int,
}

new_surface := fn(width: int, height: int): Surface {
	return .(
		@inline(memory.alloc, Color, width * height * @bitcast(@sizeof(Color))),
		width,
		height,
	)
}

surface_from_ptr := fn(ptr: ^Color, width: int, height: int): Surface {
	return .(
		ptr,
		width,
		height,
	)
}

clone_surface := fn(surface: Surface): Surface {
	new := new_surface(surface.width, surface.height)
	@inline(memory.copy, Color, surface.buf, new.buf, @intcast(surface.width * surface.height))
	return new
}

// Colours
Color := packed struct {b: u8, g: u8, r: u8, a: u8}
white := Color.(255, 255, 255, 255)
black := Color.(0, 0, 0, 255)
gray := Color.(127, 127, 127, 255)
red := Color.(0, 0, 205, 255)
green := Color.(0, 205, 0, 255)
yellow := Color.(0, 205, 205, 255)
blue := Color.(205, 0, 0, 255)
magenta := Color.(205, 0, 205, 255)
cyan := Color.(205, 205, 0, 255)
light_gray := Color.(229, 229, 229, 255)
light_red := Color.(0, 0, 255, 255)
light_green := Color.(0, 255, 0, 255)
light_yellow := Color.(0, 255, 255, 255)
light_blue := Color.(255, 0, 0, 255)
light_magenta := Color.(255, 0, 255, 255)
light_cyan := Color.(255, 255, 0, 255)

// Drawing
put_pixel := mode.put_pixel
put_rect := mode.put_rect
put_filled_rect := mode.put_filled_rect
put_line := mode.put_line
clear := mode.clear
put_surface := mode.put_surface
// thanks peony for these three!
put_trirect := mode.put_trirect
put_vline := mode.put_vline
put_hline := mode.put_hline

// Display
// width := mode.width
// height := mode.height
// dimensions := mode.dimensions
// set_height := mode.set_height
// set_width := mode.set_width
// set_dimensions := mode.set_dimensions
sync := mode.sync