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use koptinterface to reflow text in pdf/djvu readers

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chrox
2013-01-03 22:24:38 +08:00
parent e525264b01
commit 349bcb996e
7 changed files with 236 additions and 260 deletions
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39
frontend/document/djvudocument.lua
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@@ -1,14 +1,23 @@
require "cache"
require "ui/geometry"
require "ui/screen"
require "ui/device"
require "ui/reader/readerconfig"
require "document/koptinterface"
DjvuDocument = Document:new{
_document = false,
-- libdjvulibre manages its own additional cache, default value is hard written in c module.
djvulibre_cache_size = nil,
dc_null = DrawContext.new()
dc_null = DrawContext.new(),
screen_size = Screen:getSize(),
screen_dpi = Device:getModel() == "KindlePaperWhite" and 212 or 167,
configurable = Configurable,
koptinterface = KoptInterface,
}
function DjvuDocument:init()
self.configurable:loadDefaults()
if not validDjvuFile(self.file) then
self.error_message = "Not a valid DjVu file"
return
@@ -22,6 +31,7 @@ function DjvuDocument:init()
end
self.is_open = true
self.info.has_pages = true
self.info.configurable = true
self:_readMetadata()
end
@@ -38,7 +48,8 @@ end
function DjvuDocument:getUsedBBox(pageno)
-- djvu does not support usedbbox, so fake it.
local used = {}
used.x, used.y, used.w, used.h = 0.01, 0.01, -0.01, -0.01
local native_dim = self:getNativePageDimensions(pageno)
used.x0, used.y0, used.x1, used.y1 = 0, 0, native_dim.w, native_dim.h
return used
end
@@ -52,4 +63,28 @@ function DjvuDocument:invertTextYAxel(pageno, text_table)
return text_table
end
function DjvuDocument:getPageDimensions(pageno, zoom, rotation)
if self.configurable.text_wrap == 1 then
return self.koptinterface:getPageDimensions(self, pageno, zoom, rotation)
else
return Document.getPageDimensions(self, pageno, zoom, rotation)
end
end
function DjvuDocument:renderPage(pageno, rect, zoom, rotation, render_mode)
if self.configurable.text_wrap == 1 then
return self.koptinterface:renderPage(self, pageno, rect, zoom, rotation, render_mode)
else
return Document.renderPage(self, pageno, rect, zoom, rotation, render_mode)
end
end
function DjvuDocument:drawPage(target, x, y, rect, pageno, zoom, rotation, render_mode)
if self.configurable.text_wrap == 1 then
self.koptinterface:drawPage(self, target, x, y, rect, pageno, zoom, rotation, render_mode)
else
Document.drawPage(self, target, x, y, rect, pageno, zoom, rotation, render_mode)
end
end
DocumentRegistry:addProvider("djvu", "application/djvu", DjvuDocument)