add ability to specify the DPI at which to render the page

experimental/PdfViewer/SkPdfRenderer.h

Index: experimental/PdfViewer/SkPdfRenderer.h
===================================================================
--- experimental/PdfViewer/SkPdfRenderer.h	(revision 10006)
+++ experimental/PdfViewer/SkPdfRenderer.h	(working copy)
@@ -11,6 +11,7 @@
 
 class SkCanvas;
 class SkNativeParsedPDF;
+class SkRect;
 
 // TODO(edisonn): move in another file
 class SkPdfRenderer : public SkRefCnt {
@@ -20,7 +21,7 @@
     virtual ~SkPdfRenderer() {unload();}
 
     // TODO(edisonn): add options to render forms, or not
-    bool renderPage(int page, SkCanvas* canvas) const;
+    bool renderPage(int page, SkCanvas* canvas, const SkRect& dst) const;

[reed1, 2013/07/11 15:27:13]

Why is this better than just using the matrix on the canvas?

[edisonn, 2013/07/11 15:36:24]

there is some magic I need to do to remap the matrix, since in pdf the (0,0) is
on the bottom left, unlike skia where is top left. I rather have the magic in
the renderpage, rather than any caller to have to implement it.

If I get rid of it, then we can use the matrix

 
     bool load(const SkString inputFileName);
     bool loaded() const {return fPdfDoc != NULL;}