XPS, DM: add SkDocument::CreateXPS

-   SkDocument::CreateXPS() function added, returns NULL on non-Windows OS.

-   DM: (Windows only) an XPSSink is added, fails on non-Windows OS

-   DM: Common code for PDFSink::draw and XPSSink::draw are factored into
    draw_skdocument static function.

-   SkDocument_XPS (Windows only) implementation of SkDocument via
    SkXPSDevice.

-   SkDocument_XPS_None (non-Windows) returns NULL for
    SkDocument::CreateXPS().

-   gyp/xps.gyp refactored.

-   SkXPSDevice::drawTextOnPath removed (see http://crrev.com/925343003 )

-   SkXPSDevice::drawPath supports conics via SkAutoConicToQuads.

Review URL: https://codereview.chromium.org/963953002

1 files changed, 13 insertions, 0 deletions

diff --git a/include/core/SkDocument.h b/include/core/SkDocument.h
index db8113f0e2..8d48aad25b 100644
--- a/include/core/SkDocument.h
+++ b/include/core/SkDocument.h
@@ -64,6 +64,19 @@ public:
                                  SkScalar dpi = SK_ScalarDefaultRasterDPI);
 
     /**
+     *  Create a XPS-backed document, writing the results into the stream.
+     *  Returns NULL if XPS is not supported.
+     */
+    static SkDocument* CreateXPS(SkWStream* stream,
+                                 SkScalar dpi = SK_ScalarDefaultRasterDPI);
+
+    /**
+     *  Create a XPS-backed document, writing the results into a file.
+     *  Returns NULL if XPS is not supported.
+     */
+    static SkDocument* CreateXPS(const char path[],
+                                 SkScalar dpi = SK_ScalarDefaultRasterDPI);
+    /**
      *  Begin a new page for the document, returning the canvas that will draw
      *  into the page. The document owns this canvas, and it will go out of
      *  scope when endPage() or close() is called, or the document is deleted.