* No scrollbars yet. That stuff is hard.

on_editor_scrollbar_area = function(x,y)
	if x < Editor_state.right+20 then return end
	if x > Editor_state.right+40 then return end
	if y < Editor_state.top then return end
	if y > Editor_state.bottom then return end
	return true
end

on_editor_scrollbar = function(x,y)
	if x < Editor_state.right+20 then return end
	if x > Editor_state.right+40 then return end
	if y < Editor_scrollbar_top then return end
	if y > Editor_scrollbar_bottom then return end
	return true
end

Editor_scrollbar_top = 0  -- in px
Editor_scrollbar_bottom = 0

adjust_scrollbar = function(y)
	local s = (y-Editor_state.top) / (Editor_state.bottom-Editor_state.top)
	local screen_line = s*Editor_state.screen_line_count
	local line = 1
	for i=1,#Editor_state.lines do
		if Editor_state.line_cache[i].start_screen_line_index > screen_line then
			break
		end
		line = i
	end
	Editor_state.screen_top1 = {line=line, pos=1}
	Editor_state.cursor1 = {line=line, pos=1}
end

	Editor_scrollbar_top = topy
	Editor_scrollbar_bottom = boty

	edit.mouse_release(Editor_state, x,y, mouse_button)

	if Editor_scrollbar_drag then
		adjust_scrollbar(y)
		Editor_scrollbar_drag = nil
	elseif on_editor_scrollbar_area(x,y) then
		adjust_scrollbar(y)
	else
		edit.mouse_release(Editor_state, x,y, mouse_button)
	end

	edit.mouse_press(Editor_state, x,y, mouse_button)

	if on_editor_scrollbar(x,y) then
		Editor_scrollbar_drag = true
	elseif on_editor_scrollbar_area(x,y) then
		-- nothing
	else
		edit.mouse_press(Editor_state, x,y, mouse_button)
	end

end

	if Editor_scrollbar_drag then
		adjust_scrollbar(App.mouse_y())
	end
end