15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2011 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef BASE_WIN_SCOPED_SELECT_OBJECT_H_ 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define BASE_WIN_SCOPED_SELECT_OBJECT_H_ 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <windows.h> 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/basictypes.h" 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/logging.h" 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace base { 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace win { 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Helper class for deselecting object from DC. 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class ScopedSelectObject { 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScopedSelectObject(HDC hdc, HGDIOBJ object) 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : hdc_(hdc), 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) oldobj_(SelectObject(hdc, object)) { 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(hdc_); 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(object); 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(oldobj_ != NULL && oldobj_ != HGDI_ERROR); 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ~ScopedSelectObject() { 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) HGDIOBJ object = SelectObject(hdc_, oldobj_); 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK((GetObjectType(oldobj_) != OBJ_REGION && object != NULL) || 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (GetObjectType(oldobj_) == OBJ_REGION && object != HGDI_ERROR)); 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) private: 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) HDC hdc_; 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) HGDIOBJ oldobj_; 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DISALLOW_COPY_AND_ASSIGN(ScopedSelectObject); 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace win 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace base 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif // BASE_WIN_SCOPED_SELECT_OBJECT_H_ 44