Creating framework for drawShadowedPicture

src/core/SkPictureRecord.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 "SkPictureRecord.h"
 #include "SkImage_Base.h"
 #include "SkPatchUtils.h"
@@ skipping 201 matching lines @@
     this->validate(fWriter.bytesWritten(), 0);
     // op + matrix
     size_t size = kUInt32Size + matrix.writeToMemory(nullptr);
     size_t initialOffset = this->addDraw(SET_MATRIX, &size);
     this->addMatrix(matrix);
     this->validate(initialOffset, size);
     this->INHERITED::didSetMatrix(matrix);
 }
 
 void SkPictureRecord::didTranslateZ(SkScalar z) {
+#ifdef SK_USE_SHADOWS
     this->validate(fWriter.bytesWritten(), 0);
     // op + scalar
     size_t size = 1 * kUInt32Size + 1 * sizeof(SkScalar);
     size_t initialOffset = this->addDraw(TRANSLATE_Z, &size);
     this->addScalar(z);
     this->validate(initialOffset, size);
     this->INHERITED::didTranslateZ(z);
+#endif
 }
 
 static bool regionOpExpands(SkRegion::Op op) {
     switch (op) {
         case SkRegion::kUnion_Op:
         case SkRegion::kXOR_Op:
         case SkRegion::kReverseDifference_Op:
         case SkRegion::kReplace_Op:
             return true;
         case SkRegion::kIntersect_Op:
@@ skipping 426 matching lines @@
         const SkMatrix& m = matrix ? *matrix : SkMatrix::I();
         size += m.writeToMemory(nullptr) + kUInt32Size;    // matrix + paint
         initialOffset = this->addDraw(DRAW_PICTURE_MATRIX_PAINT, &size);
         this->addPaintPtr(paint);
         this->addMatrix(m);
         this->addPicture(picture);
     }
     this->validate(initialOffset, size);
 }
 
+void SkPictureRecord::onDrawShadowedPicture(const SkPicture* picture,
+                                            const SkMatrix* matrix,
+                                            const SkPaint* paint) {
+    // op + picture index
+    size_t size = 2 * kUInt32Size;
+    size_t initialOffset;
+
+    if (nullptr == matrix && nullptr == paint) {
+        initialOffset = this->addDraw(DRAW_PICTURE, &size);
+        this->addPicture(picture);
+    } else {
+        const SkMatrix& m = matrix ? *matrix : SkMatrix::I();
+        size += m.writeToMemory(nullptr) + kUInt32Size;    // matrix + paint
+        initialOffset = this->addDraw(DRAW_PICTURE_MATRIX_PAINT, &size);
+        this->addPaintPtr(paint);
+        this->addMatrix(m);
+        this->addPicture(picture);
+    }
+    this->validate(initialOffset, size);
+}
+
 void SkPictureRecord::onDrawDrawable(SkDrawable* drawable, const SkMatrix* matrix) {
     // op + drawable index
     size_t size = 2 * kUInt32Size;
     size_t initialOffset;
 
     if (nullptr == matrix) {
         initialOffset = this->addDraw(DRAW_DRAWABLE, &size);
         this->addDrawable(drawable);
     } else {
         size += matrix->writeToMemory(nullptr);    // matrix
@@ skipping 345 matching lines @@
 
 void SkPictureRecord::addTextBlob(const SkTextBlob *blob) {
     int index = fTextBlobRefs.count();
     *fTextBlobRefs.append() = blob;
     blob->ref();
     // follow the convention of recording a 1-based index
     this->addInt(index + 1);
 }
 
 ///////////////////////////////////////////////////////////////////////////////