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Viewing changes to debian/modules/ngx_pagespeed/psol/include/third_party/chromium/src/base/win/scoped_select_object.h

  • Committer: Vivian
  • Date: 2015-12-04 18:20:11 UTC
  • Revision ID: git-v1:a36f2bc32e884f7473b3a47040e5411306144d7d
* Do not extract psol.tar.gz

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debian/modules/ngx_pagespeed/psol/include/third_party/chromium/src/base/win/scoped_select_object.h
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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef BASE_WIN_SCOPED_SELECT_OBJECT_H_
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#define BASE_WIN_SCOPED_SELECT_OBJECT_H_
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#include <windows.h>
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#include "base/basictypes.h"
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#include "base/logging.h"
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namespace base {
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namespace win {
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// Helper class for deselecting object from DC.
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class ScopedSelectObject {
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 public:
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  ScopedSelectObject(HDC hdc, HGDIOBJ object)
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      : hdc_(hdc),
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        oldobj_(SelectObject(hdc, object)) {
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    DCHECK(hdc_);
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    DCHECK(object);
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    DCHECK(oldobj_ != NULL && oldobj_ != HGDI_ERROR);
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  }
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  ~ScopedSelectObject() {
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    HGDIOBJ object = SelectObject(hdc_, oldobj_);
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    DCHECK((GetObjectType(oldobj_) != OBJ_REGION && object != NULL) ||
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           (GetObjectType(oldobj_) == OBJ_REGION && object != HGDI_ERROR));
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  }
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 private:
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  HDC hdc_;
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  HGDIOBJ oldobj_;
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  DISALLOW_COPY_AND_ASSIGN(ScopedSelectObject);
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};
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}  // namespace win
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}  // namespace base
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#endif  // BASE_WIN_SCOPED_SELECT_OBJECT_H_