Removal of dependencies on PlatformDevice classes.

skia/ext/platform_device.cc

+// Copyright (c) 2011 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 "skia/ext/platform_device.h"
+
+#include "third_party/skia/include/core/SkMetaData.h"
+
+namespace skia {
+
+namespace platform_util {
+
+namespace {
+const char* kDevicePlatformBehaviour = "CrDevicePlatformBehaviour";
+}
+
+void SetPlatformDevice(SkDevice* device, PlatformDevice* platform_behaviour) {
+  SkMetaData& meta_data = device->getMetaData();
+  meta_data.setPtr(kDevicePlatformBehaviour, platform_behaviour);
+}
+
+PlatformDevice* GetPlatformDevice(SkDevice* device) {
+  SkMetaData& meta_data = device->getMetaData();
+  PlatformDevice* device_behaviour = NULL;
+  if (meta_data.findPtr(kDevicePlatformBehaviour,
+                        reinterpret_cast<void**>(&device_behaviour)))
+    return device_behaviour;
+
+  return NULL;
+}
+
+PlatformSurface BeginPlatformPaint(SkDevice* device) {
+  PlatformDevice* platform_device = GetPlatformDevice(device);
+  if (platform_device)
+    return platform_device->BeginPlatformPaint();
+
+  return 0;
+}
+
+void EndPlatformPaint(SkDevice* device) {
+  PlatformDevice* platform_device = GetPlatformDevice(device);
+  if (platform_device)
+    return platform_device->EndPlatformPaint();
+}
+
+// Returns the color value at the specified location.
+SkColor GetColorAt(SkDevice* device, int x, int y) {
+  const SkBitmap& bitmap = device->accessBitmap(false);
+  SkAutoLockPixels lock(bitmap);
+  uint32_t* data = bitmap.getAddr32(0, 0);
+  return static_cast<SkColor>(data[x + y * device->width()]);
+}
+
+bool IsVectorial(SkDevice* device) {
+  PlatformDevice* platform_device = GetPlatformDevice(device);
+  if (platform_device)
+    return platform_device->IsVectorial();
+
+  return device->getDeviceCapabilities() & SkDevice::kVector_Capability;
+}
+
+bool IsNativeFontRenderingAllowed(SkDevice* device) {
+  PlatformDevice* platform_device = GetPlatformDevice(device);
+  if (platform_device)
+    return platform_device->IsNativeFontRenderingAllowed();
+
+  return false;
+}
+
+}  // namespace platform_util
+
+}  // namespace skia
+