Update the SkDocument interface to allow for 1) abort won't emit pdf, 2) close can report success/f…

src/pdf/SkPDFDevice.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkPDFDevice.h"
 
 #include "SkAnnotation.h"
@@ skipping 689 matching lines @@
     fInitialTransform.setTranslate(0, SkIntToScalar(pageSize.fHeight));
     fInitialTransform.preScale(SK_Scalar1, -SK_Scalar1);
     fInitialTransform.preConcat(initialTransform);
 
     SkIRect existingClip = SkIRect::MakeWH(this->width(), this->height());
     fExistingClipRegion.setRect(existingClip);
 
     this->init();
 }
 
+SkISize SkSizeToISize(const SkSize& size) {
+    return SkISize::Make(SkScalarRoundToInt(size.width()), SkScalarRoundToInt(size.height()));
+}
+
+SkPDFDevice::SkPDFDevice(const SkSize& trimBox, const SkRect& content)
+    : SkBitmapDevice(makeContentBitmap(SkSizeToISize(SkSize::Make(content.width(), content.height())),
+                                       NULL)),
+      fPageSize(SkSizeToISize(SkSize::Make(content.width(), content.height()))),
+      fContentSize(SkSizeToISize(trimBox)),
+      fLastContentEntry(NULL),
+      fLastMarginContentEntry(NULL),
+      fClipStack(NULL),
+      fEncoder(NULL) {
+    // Skia generally uses the top left as the origin but PDF natively has the
+    // origin at the bottom left. This matrix corrects for that.  But that only
+    // needs to be done once, we don't do it when layering.
+    fInitialTransform.reset();
+    fInitialTransform.setTranslate(0, SkIntToScalar(fPageSize.fHeight));
+    fInitialTransform.preScale(SK_Scalar1, -SK_Scalar1);
+    fInitialTransform.preTranslate(-content.left(), -content.top());
+
+    SkIRect existingClip = SkIRect::MakeWH(this->width(), this->height());
+    fExistingClipRegion.setRect(existingClip);
+
+    this->init();
+}
+
+
 // TODO(vandebo) change layerSize to SkSize.
 SkPDFDevice::SkPDFDevice(const SkISize& layerSize,
                          const SkClipStack& existingClipStack,
                          const SkRegion& existingClipRegion)
     : SkBitmapDevice(makeContentBitmap(layerSize, NULL)),
       fPageSize(layerSize),
       fContentSize(layerSize),
       fExistingClipStack(existingClipStack),
       fExistingClipRegion(existingClipRegion),
       fLastContentEntry(NULL),
@@ skipping 1216 matching lines @@
 }
 
 bool SkPDFDevice::onReadPixels(const SkBitmap& bitmap, int x, int y,
                                SkCanvas::Config8888) {
     return false;
 }
 
 bool SkPDFDevice::allowImageFilter(SkImageFilter*) {
     return false;
 }