require "unireader"

PICViewer = UniReader:new{}

function PICViewer:setDefaults()
	self.show_overlap_enable = false
	self.show_links_enable = false
end

function PICViewer:open(filename)
	ok, self.doc = pcall(pic.openDocument, filename)
	if not ok then
		return ok, self.doc
	end
	return ok
end

function PICViewer:_drawReadingInfo()
	local width = G_width
	local face = Font:getFace("rifont", 20)
	local page_width, page_height, page_components = self.doc:getOriginalPageSize()

	-- display memory, time, battery and image info on top of page
	fb.bb:paintRect(0, 0, width, 40+6*2, 0)
	renderUtf8Text(fb.bb, 10, 15+6, face,
		"M: "..
		math.ceil( self.cache_current_memsize / 1024 ).."/"..math.ceil( self.cache_max_memsize / 1024 ).."k", true)
	local txt = os.date("%a %d %b %Y %T").." ["..BatteryLevel().."]"
	local w = sizeUtf8Text(0, width, face, txt, true).x
	renderUtf8Text(fb.bb, width - w - 10, 15+6, face, txt, true)
	renderUtf8Text(fb.bb, 10, 15+6+22, face,
		"Gm:"..string.format("%.1f",self.globalgamma)..", "..
		tostring(page_width).."x"..tostring(page_height).."x"..tostring(page_components)..
		" ("..tostring(math.ceil(page_width*page_height*page_components/1024)).."k), "..
		string.format("%.1fx", self.globalzoom), true)
end

function PICViewer:init()
	self:addAllCommands()
	self:adjustCommands()
end

function PICViewer:adjustCommands()
	self.commands:del(KEY_G, nil, "G")
	self.commands:del(KEY_T, nil, "T")
	self.commands:del(KEY_B, nil, "B")
	self.commands:del(KEY_B, MOD_ALT, "B")
	self.commands:del(KEY_B, MOD_SHIFT, "B")
	self.commands:del(KEY_R, MOD_SHIFT, "R")
	self.commands:del(KEY_DOT, nil, ".")
	self.commands:del(KEY_N, nil, "N")
	self.commands:del(KEY_L, nil, "L")
	self.commands:del(KEY_L, MOD_SHIFT, "L")
	self.commands:del(KEY_N, MOD_SHIFT, "N")
	self.commands:del(KEY_J, MOD_SHIFT,"J")
	self.commands:del(KEY_K, MOD_SHIFT,"K")
	self.commands:del(KEY_R, MOD_ALT,"R")
	self.commands:del(KEY_BACK, nil,"Back")
	self.commands:del(KEY_BACK, MOD_SHIFT,"Back")
	self.commands:delGroup("[1, 2 .. 9, 0]")
	self.commands:delGroup(MOD_ALT.."H/J")
	self.commands:delGroup(MOD_ALT.."K/L")
end