Move skia extensions from the port to skia/ext.

webkit/port/platform/graphics/skia/public/VectorCanvas.cpp

-// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "base/gfx/vector_canvas.h"
-
-#include "base/gfx/vector_device.h"
-#include "base/logging.h"
-
-namespace gfx {
-
-VectorCanvas::VectorCanvas() {
-}
-
-VectorCanvas::VectorCanvas(HDC dc, int width, int height) {
-  bool initialized = initialize(dc, width, height);
-  CHECK(initialized);
-}
-
-VectorCanvas::~VectorCanvas() {
-}
-
-bool VectorCanvas::initialize(HDC context, int width, int height) {
-  SkDevice* device = createPlatformDevice(width, height, true, context);
-  if (!device)
-    return false;
-
-  setDevice(device);
-  device->unref();  // was created with refcount 1, and setDevice also refs
-  return true;
-}
-
-SkBounder* VectorCanvas::setBounder(SkBounder* bounder) {
-  if (!IsTopDeviceVectorial())
-    return PlatformCanvasWin::setBounder(bounder);
-
-  // This function isn't used in the code. Verify this assumption.
-  NOTREACHED();
-  return NULL;
-}
-
-SkDevice* VectorCanvas::createDevice(SkBitmap::Config config,
-                                     int width, int height,
-                                     bool is_opaque, bool isForLayer) {
-  DCHECK(config == SkBitmap::kARGB_8888_Config);
-  return createPlatformDevice(width, height, is_opaque, NULL);
-}
-
-SkDrawFilter* VectorCanvas::setDrawFilter(SkDrawFilter* filter) {
-  // This function isn't used in the code. Verify this assumption.
-  NOTREACHED();
-  return NULL;
-}
-
-SkDevice* VectorCanvas::createPlatformDevice(int width,
-                                             int height, bool is_opaque,
-                                             HANDLE shared_section) {
-  if (!is_opaque) {
-    // TODO(maruel):  http://b/1184002 1184002 When restoring a semi-transparent
-    // layer, i.e. merging it, we need to rasterize it because GDI doesn't
-    // support transparency except for AlphaBlend(). Right now, a
-    // BitmapPlatformDeviceWin is created when VectorCanvas think a saveLayers()
-    // call is being done. The way to save a layer would be to create an
-    // EMF-based VectorDevice and have this device registers the drawing. When
-    // playing back the device into a bitmap, do it at the printer's dpi instead
-    // of the layout's dpi (which is much lower).
-    return PlatformCanvasWin::createPlatformDevice(width, height, is_opaque,
-                                                shared_section);
-  }
-
-  // TODO(maruel):  http://b/1183870 Look if it would be worth to increase the
-  // resolution by ~10x (any worthy factor) to increase the rendering precision
-  // (think about printing) while using a relatively low dpi. This happens
-  // because we receive float as input but the GDI functions works with
-  // integers. The idea is to premultiply the matrix with this factor and
-  // multiply each SkScalar that are passed to SkScalarRound(value) as
-  // SkScalarRound(value * 10). Safari is already doing the same for text
-  // rendering.
-  DCHECK(shared_section);
-  PlatformDeviceWin* device = VectorDevice::create(
-      reinterpret_cast<HDC>(shared_section), width, height);
-  return device;
-}
-
-bool VectorCanvas::IsTopDeviceVectorial() const {
-  return getTopPlatformDevice().IsVectorial();
-}
-
-}  // namespace gfx
-