Refactoring in SkImage implementations backed by a SkBitmap

src/image/SkImage_BitmapBase.cpp

+/*
+ * Copyright 2014 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "SkImage_BitmapBase.h"
+
+#include "SkCanvas.h"
+
+SkImage_BitmapBase::SkImage_BitmapBase(int width, int height)
+    : INHERITED(width, height) {
+}
+
+SkImage_BitmapBase::SkImage_BitmapBase(const SkBitmap& bitmap)
+    : INHERITED(bitmap.width(), bitmap.height())
+    , fBitmap(bitmap) {
+}
+
+bool SkImage_BitmapBase::isOpaque() const {
+    return this->getBitmap().isOpaque();
+}
+
+SkShader* SkImage_BitmapBase::onNewShader(SkShader::TileMode tileX,
+                                   SkShader::TileMode tileY,
+                                   const SkMatrix* localMatrix) const
+{
+    return SkShader::CreateBitmapShader(this->getBitmap(), tileX, tileY, localMatrix);
+}
+
+void SkImage_BitmapBase::onDraw(SkCanvas* canvas, SkScalar x, SkScalar y, const SkPaint* paint) const {
+    canvas->drawBitmap(this->getBitmap(), x, y, paint);
+}
+
+void SkImage_BitmapBase::onDrawRectToRect(SkCanvas* canvas, const SkRect* src, const SkRect& dst,
+                                   const SkPaint* paint) const {
+    canvas->drawBitmapRectToRect(this->getBitmap(), src, dst, paint);
+}