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| -rw-r--r-- | canvas/inc/base/bitmapcanvasbase.hxx | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/canvas/inc/base/bitmapcanvasbase.hxx b/canvas/inc/base/bitmapcanvasbase.hxx new file mode 100644 index 000000000..efbf58f55 --- /dev/null +++ b/canvas/inc/base/bitmapcanvasbase.hxx @@ -0,0 +1,125 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ + +#pragma once + +#include <base/canvasbase.hxx> +#include <com/sun/star/geometry/IntegerSize2D.hpp> + +namespace com::sun::star::rendering { class XBitmapCanvas; } + +namespace canvas +{ + /** Helper template to handle XBitmapCanvas method forwarding to + BitmapCanvasHelper + + Use this helper to handle the XBitmapCanvas part of your + implementation. + + @tpl Base + Base class to use, most probably one of the + WeakComponentImplHelperN templates with the appropriate + interfaces. At least XBitmapCanvas should be among them (why + else would you use this template, then?). Base class must have + a Base( const Mutex& ) constructor (like the + WeakComponentImplHelperN templates have). + + @tpl CanvasHelper + Canvas helper implementation for the backend in question + + @tpl Mutex + Lock strategy to use. Defaults to using the + BaseMutex-provided lock. Every time one of the methods is + entered, an object of type Mutex is created with m_aMutex as + the sole parameter, and destroyed again when the method scope + is left. + + @tpl UnambiguousBase + Optional unambiguous base class for XInterface of Base. It's + sometimes necessary to specify this parameter, e.g. if Base + derives from multiple UNO interface (were each provides its + own version of XInterface, making the conversion ambiguous) + + @see CanvasBase for further contractual requirements towards + the CanvasHelper type, and some examples. + */ + template< class Base, + class CanvasHelper, + class Mutex=::osl::MutexGuard, + class UnambiguousBase=css::uno::XInterface > class BitmapCanvasBase : + public CanvasBase< Base, CanvasHelper, Mutex, UnambiguousBase > + { + public: + typedef CanvasBase< Base, CanvasHelper, Mutex, UnambiguousBase > BaseType; + + // XBitmap + virtual css::geometry::IntegerSize2D SAL_CALL getSize( ) override + { + typename BaseType::MutexType aGuard( BaseType::m_aMutex ); + + return BaseType::maCanvasHelper.getSize(); + } + + virtual sal_Bool SAL_CALL hasAlpha( ) override + { + return true; + } + + virtual css::uno::Reference< css::rendering::XBitmap > SAL_CALL getScaledBitmap( const css::geometry::RealSize2D& newSize, + sal_Bool beFast ) override + { + typename BaseType::MutexType aGuard( BaseType::m_aMutex ); + + return BaseType::maCanvasHelper.getScaledBitmap( newSize, beFast ); + } + + }; + + template< class Base, + class CanvasHelper, + class Mutex=::osl::MutexGuard, + class UnambiguousBase = css::uno::XInterface > class BitmapCanvasBase2 : + public BitmapCanvasBase< Base, CanvasHelper, Mutex, UnambiguousBase > + { + typedef BitmapCanvasBase< Base, CanvasHelper, Mutex, UnambiguousBase > + BaseType; + + public: + // XBitmapCanvas + virtual void SAL_CALL copyRect( const css::uno::Reference< css::rendering::XBitmapCanvas >& sourceCanvas, + const css::geometry::RealRectangle2D& sourceRect, + const css::rendering::ViewState& sourceViewState, + const css::rendering::RenderState& sourceRenderState, + const css::geometry::RealRectangle2D& destRect, + const css::rendering::ViewState& destViewState, + const css::rendering::RenderState& destRenderState ) override + { + tools::verifyArgs(sourceCanvas, sourceRect, sourceViewState, sourceRenderState, + destRect, destViewState, destRenderState, + OSL_THIS_FUNC, + static_cast< typename BaseType::UnambiguousBaseType* >(this)); + + typename BaseType::BaseType::MutexType aGuard( BaseType::m_aMutex ); + + BaseType::BaseType::mbSurfaceDirty = true; + } + }; +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |