Merge pull request #324 from houqp/houqp-master

add pic document type for jpeg

frontend/document/credocument.lua

@@ -16,7 +16,6 @@ CreDocument = Document:new{
 	fallback_font = "Droid Sans Fallback",
 	default_css = "./data/cr3.css",
 	options = CreOptions,
-	configurable = Configurable,
 }
 
 -- NuPogodi, 20.05.12: inspect the zipfile content

frontend/document/djvudocument.lua

@@ -10,7 +10,6 @@ DjvuDocument = Document:new{
 	djvulibre_cache_size = nil,
 	dc_null = DrawContext.new(),
 	options = KoptOptions,
-	configurable = Configurable,
 	koptinterface = KoptInterface,
 }
 

frontend/document/document.lua

@@ -60,24 +60,26 @@ Document = {
 		number_of_pages = 0,
 		-- if not pageable, length of the document in pixels
 		doc_height = 0,
-		
+
 		-- other metadata
 		title = "",
 		author = "",
 		date = ""
 	},
-	
+
 	GAMMA_NO_GAMMA = 1.0,
-	
+
 	-- override bbox from orignal page's getUsedBBox
 	bbox = {},
-		
+
 	-- flag to show whether the document was opened successfully
 	is_open = false,
 	error_message = nil,
 
 	-- flag to show that the document needs to be unlocked by a password
 	is_locked = false,
+
+	configurable = Configurable,
 }
 
 function Document:new(o)
@@ -227,7 +229,7 @@ function Document:renderPage(pageno, rect, zoom, rotation, gamma, render_mode)
 		size = rect
 	end
 
-	-- prepare cache item with contained blitbuffer	
+	-- prepare cache item with contained blitbuffer
 	local tile = TileCacheItem:new{
 		size = size.w * size.h / 2 + 64, -- estimation
 		excerpt = size,
@@ -248,7 +250,7 @@ function Document:renderPage(pageno, rect, zoom, rotation, gamma, render_mode)
 		dc:setOffset(0, page_size.h)
 	end
 	dc:setZoom(zoom)
-	
+
 	if gamma ~= self.GAMMA_NO_GAMMA then
 		--DEBUG("gamma correction: ", gamma)
 		dc:setGamma(gamma)
@@ -294,7 +296,7 @@ function Document:drawPage(target, x, y, rect, pageno, zoom, rotation, gamma, re
 	end
 	DEBUG("now painting", tile, rect)
 	target:blitFrom(tile.bb,
-		x, y, 
+		x, y,
 		rect.x - tile.excerpt.x,
 		rect.y - tile.excerpt.y,
 		rect.w, rect.h)
@@ -313,3 +315,4 @@ end
 require "document/pdfdocument"
 require "document/djvudocument"
 require "document/credocument"
+require "document/picdocument"

frontend/document/pdfdocument.lua

@@ -10,7 +10,6 @@ PdfDocument = Document:new{
 	mupdf_cache_size = 5 * 1024 * 1024,
 	dc_null = DrawContext.new(),
 	options = KoptOptions,
-	configurable = Configurable,
 	koptinterface = KoptInterface,
 }
 

frontend/document/picdocument.lua

@@ -0,0 +1,26 @@
+
+PicDocument = Document:new{
+	_document = false,
+	dc_null = DrawContext.new(),
+}
+
+function PicDocument:init()
+	ok, self._document = pcall(pic.openDocument, self.file)
+	if not ok then
+		self.error_message = "failed to open jpeg image"
+		return
+	end
+
+	self.info.has_pages = true
+	self.info.configurable = false
+
+	self:readMetadata()
+end
+
+function PicDocument:readMetadata()
+	self.info.number_of_pages = 1
+end
+
+
+DocumentRegistry:addProvider("jpeg", "application/jpeg", PicDocument)
+DocumentRegistry:addProvider("jpg", "application/jpeg", PicDocument)