canvas/source/vcl/outdevholder.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
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   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
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  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #pragma once
  21
  22 #include <vcl/outdev.hxx>
  23
  24 #include "outdevprovider.hxx"
  25
  26 namespace vclcanvas
  27 {
  28 class OutDevHolder : public OutDevProvider
  29 {
  30 public:
  31     OutDevHolder(const OutDevHolder&) = delete;
  32     const OutDevHolder& operator=(const OutDevHolder&) = delete;
  33
  34     explicit OutDevHolder(OutputDevice& rOutDev)
  35         : mrOutDev(rOutDev)
  36     {
  37     }
  38
  39 private:
  40     virtual OutputDevice& getOutDev() override { return mrOutDev; }
  41     virtual const OutputDevice& getOutDev() const override { return mrOutDev; }
  42
  43     // TODO(Q2): Lifetime issue. This _only_ works reliably,
  44     // if disposing the Canvas correctly disposes all
  45     // entities which hold this pointer.
  46     OutputDevice& mrOutDev;
  47 };
  48 }
  49
  50 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */