Move BitmapPlatformDeviceData into its own header file.

skia/ext/bitmap_platform_device_win.cc

-// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Copyright (c) 2010 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 <windows.h>
 #include <psapi.h>
 
 #include "skia/ext/bitmap_platform_device_win.h"
 
+#include "skia/ext/bitmap_platform_device_data.h"
 #include "third_party/skia/include/core/SkMatrix.h"
 #include "third_party/skia/include/core/SkRefCnt.h"
 #include "third_party/skia/include/core/SkRegion.h"
 #include "third_party/skia/include/core/SkUtils.h"
 
 namespace skia {
 
 namespace {
 
 // Constrains position and size to fit within available_size. If |size| is -1,
@@ skipping 18 matching lines @@
     }
   } else {
     // Fill up available size.
     *size = available_size - *position;
   }
   return true;
 }
 
 }  // namespace
 
-class BitmapPlatformDevice::BitmapPlatformDeviceData : public SkRefCnt {
- public:
-  explicit BitmapPlatformDeviceData(HBITMAP hbitmap);
-
-  // Create/destroy hdc_, which is the memory DC for our bitmap data.
-  HDC GetBitmapDC();
-  void ReleaseBitmapDC();
-  bool IsBitmapDCCreated() const;
-
-  // Sets the transform and clip operations. This will not update the DC,
-  // but will mark the config as dirty. The next call of LoadConfig will
-  // pick up these changes.
-  void SetMatrixClip(const SkMatrix& transform, const SkRegion& region);
-
-  const SkMatrix& transform() const {
-    return transform_;
-  }
-
- protected:
-  // Loads the current transform and clip into the DC. Can be called even when
-  // the DC is NULL (will be a NOP).
-  void LoadConfig();
-
-  // Windows bitmap corresponding to our surface.
-  HBITMAP hbitmap_;
-
-  // Lazily-created DC used to draw into the bitmap, see getBitmapDC.
-  HDC hdc_;
-
-  // True when there is a transform or clip that has not been set to the DC.
-  // The DC is retrieved for every text operation, and the transform and clip
-  // do not change as much. We can save time by not loading the clip and
-  // transform for every one.
-  bool config_dirty_;
-
-  // Translation assigned to the DC: we need to keep track of this separately
-  // so it can be updated even if the DC isn't created yet.
-  SkMatrix transform_;
-
-  // The current clipping
-  SkRegion clip_region_;
-
- private:
-  virtual ~BitmapPlatformDeviceData();
-
-  // Copy & assign are not supported.
-  BitmapPlatformDeviceData(const BitmapPlatformDeviceData&);
-  BitmapPlatformDeviceData& operator=(const BitmapPlatformDeviceData&);
-};
-
 BitmapPlatformDevice::BitmapPlatformDeviceData::BitmapPlatformDeviceData(
     HBITMAP hbitmap)
-    : hbitmap_(hbitmap),
+    : bitmap_context_(hbitmap),
       hdc_(NULL),
       config_dirty_(true) {  // Want to load the config next time.
   // Initialize the clip region to the entire bitmap.
   BITMAP bitmap_data;
-  if (GetObject(hbitmap_, sizeof(BITMAP), &bitmap_data)) {
+  if (GetObject(bitmap_context_, sizeof(BITMAP), &bitmap_data)) {
     SkIRect rect;
     rect.set(0, 0, bitmap_data.bmWidth, bitmap_data.bmHeight);
     clip_region_ = SkRegion(rect);
   }
 
   transform_.reset();
 }
 
 BitmapPlatformDevice::BitmapPlatformDeviceData::~BitmapPlatformDeviceData() {
   if (hdc_)
     ReleaseBitmapDC();
 
   // this will free the bitmap data as well as the bitmap handle
-  DeleteObject(hbitmap_);
+  DeleteObject(bitmap_context_);
 }
 
 HDC BitmapPlatformDevice::BitmapPlatformDeviceData::GetBitmapDC() {
   if (!hdc_) {
     hdc_ = CreateCompatibleDC(NULL);
     InitializeDC(hdc_);
-    HGDIOBJ old_bitmap = SelectObject(hdc_, hbitmap_);
+    HGDIOBJ old_bitmap = SelectObject(hdc_, bitmap_context_);
     // When the memory DC is created, its display surface is exactly one
     // monochrome pixel wide and one monochrome pixel high. Since we select our
     // own bitmap, we must delete the previous one.
     DeleteObject(old_bitmap);
   }
 
   LoadConfig();
   return hdc_;
 }
 
@@ skipping 236 matching lines @@
 
 void BitmapPlatformDevice::onAccessBitmap(SkBitmap* bitmap) {
   // FIXME(brettw) OPTIMIZATION: We should only flush if we know a GDI
   // operation has occurred on our DC.
   if (data_->IsBitmapDCCreated())
     GdiFlush();
 }
 
 }  // namespace skia