Add drawBitmapLattice() API

src/pdf/SkPDFCanvas.cpp

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
-#include "SkNinePatchIter.h"
+#include "SkLatticeIter.h"
 #include "SkPDFCanvas.h"
 #include "SkPDFDevice.h"
 
 SkPDFCanvas::SkPDFCanvas(const sk_sp<SkPDFDevice>& dev)
     : SkCanvas(dev.get()) {}
 
 SkPDFCanvas::~SkPDFCanvas() {}
 
 /*
  *  PDF's impl sometimes wants to access the raster clip as a SkRegion. To keep this valid,
  *  we intercept all clip calls to ensure that the clip stays BW (i.e. never antialiased), since
  *  an antialiased clip won't build a SkRegion (it builds SkAAClip).
  */
 void SkPDFCanvas::onClipRect(const SkRect& rect, SkRegion::Op op, ClipEdgeStyle edgeStyle) {
     this->INHERITED::onClipRect(rect, op, kHard_ClipEdgeStyle);
 }
 
 void SkPDFCanvas::onClipRRect(const SkRRect& rrect, SkRegion::Op op, ClipEdgeStyle edgeStyle) {
     this->INHERITED::onClipRRect(rrect, op, kHard_ClipEdgeStyle);
 }
 
 void SkPDFCanvas::onClipPath(const SkPath& path, SkRegion::Op op, ClipEdgeStyle edgeStyle) {
     this->INHERITED::onClipPath(path, op, kHard_ClipEdgeStyle);
 }
 
 void SkPDFCanvas::onDrawBitmapNine(const SkBitmap& bitmap,
                                    const SkIRect& center,
                                    const SkRect& dst,
                                    const SkPaint* paint) {
-    SkNinePatchIter iter(bitmap.width(), bitmap.height(), center, dst);
+    SkLatticeIter iter(bitmap.width(), bitmap.height(), center, dst);
     SkRect srcR, dstR;
     while (iter.next(&srcR, &dstR)) {
         this->drawBitmapRect(bitmap, srcR, dstR, paint);
     }
 }
 
 void SkPDFCanvas::onDrawImageNine(const SkImage* image,
                                   const SkIRect& center,
                                   const SkRect& dst,
                      const SkPaint* paint) {
-    SkNinePatchIter iter(image->width(), image->height(), center, dst);
+    SkLatticeIter iter(image->width(), image->height(), center, dst);
     SkRect srcR, dstR;
     while (iter.next(&srcR, &dstR)) {
         this->drawImageRect(image, srcR, dstR, paint);
     }
 }
 
 void SkPDFCanvas::onDrawImageRect(const SkImage* image,
                                   const SkRect* srcPtr,
                                   const SkRect& dst,
                                   const SkPaint* paint,
@@ skipping 17 matching lines @@
     SkRect bounds = SkRect::Make(bitmap.bounds());
     SkRect src = srcPtr ? *srcPtr : bounds;
     SkAutoCanvasRestore autoCanvasRestore(this, true);
     if (src != bounds) {
         this->clipRect(dst);
     }
     this->concat(SkMatrix::MakeRectToRect(src, dst,
                                  SkMatrix::kFill_ScaleToFit));
     this->drawBitmap(bitmap, 0, 0, paint);
 }
+
+void SkPDFCanvas::onDrawImageLattice(const SkImage* image,
+                                     const Lattice& lattice,
+                                     const SkRect& dst,
+                                     const SkPaint* paint) {
+    SkLatticeIter iter(image->width(), image->height(), lattice, dst);
+    SkRect srcR, dstR;
+    while (iter.next(&srcR, &dstR)) {
+        this->drawImageRect(image, srcR, dstR, paint);
+    }
+}