Eliminate skia::PlatformCanvas - Step 1

skia/ext/platform_device_win.cc

 // 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 "skia/ext/platform_device_win.h"
 
 #include "skia/ext/skia_utils_win.h"
 #include "third_party/skia/include/core/SkMatrix.h"
 #include "third_party/skia/include/core/SkPath.h"
 #include "third_party/skia/include/core/SkRegion.h"
 #include "third_party/skia/include/core/SkUtils.h"
 
 namespace skia {
 
 PlatformDevice::PlatformDevice(const SkBitmap& bitmap)
     : SkDevice(NULL, bitmap, /*isForLayer=*/false) {
 }
 
+HDC PlatformDevice::beginPlatformPaint() {
+  return getBitmapDC();
+}
+
+void PlatformDevice::endPlatformPaint() {
+  // we don't clear the DC here since it will be likely to be used again

[vangelis, 2011/04/05 06:23:10]

This reads a little strange.  If they are supposed to be two sentences then
please use a period after "again".

[alokp, 2011/04/05 15:37:56]

Done.

+  // flushing will be done in onAccessBitmap
+}
+
 // static
 void PlatformDevice::InitializeDC(HDC context) {
   // Enables world transformation.
   // If the GM_ADVANCED graphics mode is set, GDI always draws arcs in the
   // counterclockwise direction in logical space. This is equivalent to the
   // statement that, in the GM_ADVANCED graphics mode, both arc control points
   // and arcs themselves fully respect the device context's world-to-device
   // transformation.
   BOOL res = SetGraphicsMode(context, GM_ADVANCED);
   SkASSERT(res != 0);
@@ skipping 190 matching lines @@
     hrgn = PathToRegion(context);
   }
   int result = SelectClipRgn(context, hrgn);
   SkASSERT(result != ERROR);
   result = DeleteObject(hrgn);
   SkASSERT(result != 0);
 }
 
 }  // namespace skia