add missing readerlink widget

frontend/ui/reader/readerlink.lua

@@ -0,0 +1,71 @@
+local InputContainer = require("ui/widget/container/inputcontainer")
+local GestureRange = require("ui/gesturerange")
+local Geom = require("ui/geometry")
+local Screen = require("ui/screen")
+local Device = require("ui/device")
+local Event = require("ui/event")
+local DEBUG = require("dbg")
+
+local ReaderLink = InputContainer:new{}
+
+function ReaderLink:init()
+	if Device:isTouchDevice() then
+		self:initGesListener()
+	end
+end
+
+function ReaderLink:initGesListener()
+	if Device:isTouchDevice() then
+		self.ges_events = {
+			Tap = {
+				GestureRange:new{
+					ges = "tap",
+					range = Geom:new{
+						x = 0, y = 0,
+						w = Screen:getWidth(),
+						h = Screen:getHeight()
+					}
+				}
+			},
+		}
+	end
+end
+
+function ReaderLink:onSetDimensions(dimen)
+	-- update listening according to new screen dimen
+	if Device:isTouchDevice() then
+		self:initGesListener()
+	end
+end
+
+function ReaderLink:onTap(arg, ges)
+	local function inside_box(pos, box)
+		if pos then
+			local x, y = pos.x, pos.y
+			if box.x <= x and box.y <= y 
+				and box.x + box.w >= x 
+				and box.y + box.h >= y then
+				return true
+			end
+		end
+	end
+	if self.view.links then
+		local pos = self.view:screenToPageTransform(ges.pos)
+		for i = 1, #self.view.links do
+			local link = self.view.links[i]
+			local lbox = Geom:new{
+				x = link.start_x, y = link.start_y,
+				w = link.end_x - link.start_x,
+				h = link.end_y - link.start_y > 0 and link.end_y - link.start_y or 30,
+			}
+			if inside_box(pos, lbox) then
+				DEBUG("goto link", link)
+				self.document:gotoLink(link.section)
+				self.ui:handleEvent(Event:new("UpdateXPointer"))
+				return true
+			end
+		end
+	end
+end
+
+return ReaderLink