/src/libreoffice/canvas/source/vcl/windowoutdevholder.hxx
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1 | | /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ |
2 | | /* |
3 | | * This file is part of the LibreOffice project. |
4 | | * |
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 |
13 | | * with this work for additional information regarding copyright |
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 <com/sun/star/uno/Reference.hxx> |
23 | | #include <com/sun/star/awt/XWindow.hpp> |
24 | | #include <vcl/window.hxx> |
25 | | |
26 | | #include "outdevprovider.hxx" |
27 | | |
28 | | namespace vclcanvas |
29 | | { |
30 | | class WindowOutDevHolder : public OutDevProvider |
31 | | { |
32 | | public: |
33 | | WindowOutDevHolder(const WindowOutDevHolder&) = delete; |
34 | | const WindowOutDevHolder operator=(const WindowOutDevHolder&) = delete; |
35 | | |
36 | | explicit WindowOutDevHolder( const css::uno::Reference< css::awt::XWindow>& xWin ); |
37 | | |
38 | | private: |
39 | 0 | virtual OutputDevice& getOutDev() override { return *mrOutputWindow.GetOutDev(); } |
40 | 0 | virtual const OutputDevice& getOutDev() const override { return *mrOutputWindow.GetOutDev(); } |
41 | | |
42 | | // TODO(Q2): Lifetime issue. Though WindowGraphicDeviceBase |
43 | | // now listens to the window component, I still consider |
44 | | // holding a naked reference unsafe here (especially as we |
45 | | // pass it around via getOutDev). This _only_ works reliably, |
46 | | // if disposing the SpriteCanvas correctly disposes all |
47 | | // entities which hold this pointer. |
48 | | // So: as soon as the protocol inside |
49 | | // vcl/source/window/window.cxx is broken, that disposes the |
50 | | // canvas during window deletion, we're riding a dead horse |
51 | | // here |
52 | | vcl::Window& mrOutputWindow; |
53 | | }; |
54 | | } |
55 | | |
56 | | /* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |