Added getImageFromPosition() and isXPointerInDocument()

Bump base (depends on koreader-base PR #470)

base

@@ -1 +1 @@
-Subproject commit 08cddec4b948220fb1fcb4b6b01718b217212c8e
+Subproject commit f9b948ce34d915f21d89a8cad955ac15986aee7b

frontend/document/credocument.lua

@@ -148,8 +148,23 @@ function CreDocument:getCoverPageImage()
     if data and size then
         local Mupdf = require("ffi/mupdf")
         local ok, image = pcall(Mupdf.renderImage, data, size)
+        ffi.C.free(data)
+        if ok then
+            return image
+        end
+    end
+end
+
+function CreDocument:getImageFromPosition(pos)
+    local data, size = self._document:getImageDataFromPosition(pos.x, pos.y)
+    if data and size then
+        logger.dbg("CreDocument: got image data from position", data, size)
+        local Mupdf = require("ffi/mupdf")
+        -- wrapped with pcall so we always free(data)
+        local ok, image = pcall(Mupdf.renderImage, data, size)
+        ffi.C.free(data) -- need that explicite clean
+        logger.dbg("Mupdf.renderImage", ok, image)
         if ok then
-            ffi.C.free(data)
             return image
         end
     end
@@ -250,6 +265,10 @@ function CreDocument:getXPointer()
     return self._document:getXPointer()
 end
 
+function CreDocument:isXPointerInDocument(xp)
+    return self._document:isXPointerInDocument(xp)
+end
+
 function CreDocument:getPosFromXPointer(xp)
     return self._document:getPosFromXPointer(xp)
 end

frontend/document/document.lua

@@ -244,6 +244,10 @@ function Document:getLinkFromPosition(pageno, pos)
     return nil
 end
 
+function Document:getImageFromPosition(pos)
+    return nil
+end
+
 function Document:getTextBoxes(pageno)
     return nil
 end