add readerconfig to document supported by crengine

* now font size can be changed by readerconfig

frontend/document/credocument.lua

@@ -1,4 +1,5 @@
 require "ui/geometry"
+require "ui/creoptions"
 
 CreDocument = Document:new{
 	-- this is defined in kpvcrlib/crengine/crengine/include/lvdocview.h
@@ -10,6 +11,8 @@ CreDocument = Document:new{
 
 	line_space_percent = 100,
 	default_font = "Droid Sans Fallback",
+	options = CreOptions,
+	configurable = Configurable,
 }
 
 -- NuPogodi, 20.05.12: inspect the zipfile content
@@ -54,6 +57,7 @@ end
 
 function CreDocument:init()
 	self:engineInit()
+	self.configurable:loadDefaults(self.options)
 
 	local ok
 	local file_type = string.lower(string.match(self.file, ".+%.([^.]+)"))
@@ -83,6 +87,7 @@ function CreDocument:init()
 	self.is_open = true
 	self.info.has_pages = false
 	self:_readMetadata()
+	self.info.configurable = true
 
 	-- @TODO read line_space_percent from setting file  12.06 2012 (houqp)
 	--self._document:setDefaultInterlineSpace(self.line_space_percent)

frontend/ui/creoptions.lua

@@ -0,0 +1,21 @@
+CreOptions = {
+	prefix = 'copt',
+	default_options = {
+	},
+	{
+		icon = "resources/icons/appbar.text.size.large.png",
+		options = {
+			{
+				name = "font_size",
+				item_text = {"Aa", "Aa", "Aa", "Aa", "Aa", "Aa", "Aa", "Aa"},
+				item_align_center = 1.0,
+				spacing = Screen:getWidth()*0.03,
+				item_font_size = {18, 20, 22, 24, 29, 33, 39, 44},
+				values = {18, 20, 22, 24, 29, 33, 39, 44},
+				default_value = 1,
+				event = "SetFontSize",
+			},
+		}
+	},
+}
+

frontend/ui/reader/readerfont.lua

@@ -110,6 +110,17 @@ function ReaderFont:onChangeSize(direction)
 	return true
 end
 
+function ReaderFont:onSetFontSize(new_size)
+	if new_size > 44 then new_size = 44 end
+	if new_size < 18 then new_size = 18 end
+
+	self.font_size = new_size
+	self.ui.document:setFontSize(new_size)
+	self.ui:handleEvent(Event:new("UpdatePos"))
+
+	return true
+end
+
 function ReaderFont:onChangeLineSpace(direction)
 	if direction == "decrease" then
 		self.line_space_percent = self.line_space_percent - 10

frontend/ui/reader/readerrolling.lua

@@ -19,10 +19,10 @@ function ReaderRolling:init()
 				GestureRange:new{
 					ges = "tap",
 					range = Geom:new{
-						x = Screen:getWidth()/2,
-						y = Screen:getHeight()/2,
-						w = Screen:getWidth(),
-						h = Screen:getHeight()
+						x = Screen:getWidth()/4,
+						y = Screen:getHeight()/4,
+						w = 3*Screen:getWidth()/4,
+						h = 5*Screen:getHeight()/8,
 					}
 				}
 			},
@@ -31,9 +31,9 @@ function ReaderRolling:init()
 					ges = "tap",
 					range = Geom:new{
 						x = 0, 
-						y = Screen:getHeight()/2,
-						w = Screen:getWidth()/2,
-						h = Screen:getHeight()/2,
+						y = Screen:getHeight()/4,
+						w = Screen:getWidth()/4,
+						h = 5*Screen:getHeight()/8,
 					}
 				}
 			}