/* -*- 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 #include #include #include #include #include namespace com::sun::star::rendering { class XPolyPolygon2D; } namespace canvas { /** Helper template to handle XCustomSprite method forwarding to CanvasCustomSpriteHelper Use this helper to handle the XCustomSprite part of your implementation. @tpl Base Base class to use, most probably one of the WeakComponentImplHelperN templates with the appropriate interfaces. At least XCustomSprite and Sprite 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 SpriteHelper Sprite helper implementation for the backend in question @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 CanvasCustomSpriteHelper for further contractual requirements towards the SpriteHelper type, and some examples. */ template< class Base, class SpriteHelper, class CanvasHelper, class Mutex=::osl::MutexGuard, class UnambiguousBase = css::uno::XInterface > class CanvasCustomSpriteBase : public IntegerBitmapBase< BitmapCanvasBase2 > { public: typedef IntegerBitmapBase< BitmapCanvasBase2 > BaseType; CanvasCustomSpriteBase() : maSpriteHelper() { } /** Object is being disposed. Called from the cppu helper base, to notify disposal of this object. Already releases all internal references. @derive when overriding this method in derived classes, always call the base class' method! */ virtual void disposeThis() override { typename BaseType::MutexType aGuard( BaseType::m_aMutex ); maSpriteHelper.disposing(); // pass on to base class BaseType::disposeThis(); } // XCanvas: selectively override base's methods here, for opacity tracking virtual void SAL_CALL clear() override { typename BaseType::MutexType aGuard( BaseType::m_aMutex ); maSpriteHelper.clearingContent( this ); // and forward to base class, which handles the actual rendering return BaseType::clear(); } virtual css::uno::Reference< css::rendering::XCachedPrimitive > SAL_CALL drawBitmap( const css::uno::Reference< css::rendering::XBitmap >& xBitmap, const css::rendering::ViewState& viewState, const css::rendering::RenderState& renderState ) override { tools::verifyArgs(xBitmap, viewState, renderState, OSL_THIS_FUNC, static_cast< typename BaseType::UnambiguousBaseType* >(this)); typename BaseType::MutexType aGuard( BaseType::m_aMutex ); maSpriteHelper.checkDrawBitmap( this, xBitmap, viewState, renderState ); // and forward to base class, which handles the actual rendering return BaseType::drawBitmap( xBitmap, viewState, renderState ); } // TODO(F3): If somebody uses the XIntegerBitmap methods to // clear pixel (setting alpha != 1.0 there), or a compositing // mode results in similar alpha, maSpriteHelper might // erroneously report fully opaque sprites. Effectively, all // render methods must be overridden here; or better, // functionality provided at the baseclass. // XSprite virtual void SAL_CALL setAlpha( double alpha ) override { tools::verifyRange( alpha, 0.0, 1.0 ); typename BaseType::MutexType aGuard( BaseType::m_aMutex ); maSpriteHelper.setAlpha( this, alpha ); } virtual void SAL_CALL move( const css::geometry::RealPoint2D& aNewPos, const css::rendering::ViewState& viewState, const css::rendering::RenderState& renderState ) override { tools::verifyArgs(aNewPos, viewState, renderState, OSL_THIS_FUNC, static_cast< typename BaseType::UnambiguousBaseType* >(this)); typename BaseType::MutexType aGuard( BaseType::m_aMutex ); maSpriteHelper.move( this, aNewPos, viewState, renderState ); } virtual void SAL_CALL transform( const css::geometry::AffineMatrix2D& aTransformation ) override { tools::verifyArgs(aTransformation, OSL_THIS_FUNC, static_cast< typename BaseType::UnambiguousBaseType* >(this)); typename BaseType::MutexType aGuard( BaseType::m_aMutex ); maSpriteHelper.transform( this, aTransformation ); } virtual void SAL_CALL clip( const css::uno::Reference< css::rendering::XPolyPolygon2D >& aClip ) override { // NULL xClip explicitly allowed here (to clear clipping) typename BaseType::MutexType aGuard( BaseType::m_aMutex ); maSpriteHelper.clip( this, aClip ); } virtual void SAL_CALL setPriority( double nPriority ) override { typename BaseType::MutexType aGuard( BaseType::m_aMutex ); maSpriteHelper.setPriority( this, nPriority ); } virtual void SAL_CALL show() override { typename BaseType::MutexType aGuard( BaseType::m_aMutex ); maSpriteHelper.show( this ); } virtual void SAL_CALL hide() override { typename BaseType::MutexType aGuard( BaseType::m_aMutex ); maSpriteHelper.hide( this ); } // XCustomSprite virtual css::uno::Reference< css::rendering::XCanvas > SAL_CALL getContentCanvas() override { typename BaseType::MutexType aGuard( BaseType::m_aMutex ); return this; } // Sprite virtual bool isAreaUpdateOpaque( const ::basegfx::B2DRange& rUpdateArea ) const override { typename BaseType::MutexType aGuard( BaseType::m_aMutex ); return maSpriteHelper.isAreaUpdateOpaque( rUpdateArea ); } virtual bool isContentChanged() const override { typename BaseType::MutexType aGuard( BaseType::m_aMutex ); return BaseType::mbSurfaceDirty; } virtual ::basegfx::B2DPoint getPosPixel() const override { typename BaseType::MutexType aGuard( BaseType::m_aMutex ); return maSpriteHelper.getPosPixel(); } virtual ::basegfx::B2DVector getSizePixel() const override { typename BaseType::MutexType aGuard( BaseType::m_aMutex ); return maSpriteHelper.getSizePixel(); } virtual ::basegfx::B2DRange getUpdateArea() const override { typename BaseType::MutexType aGuard( BaseType::m_aMutex ); return maSpriteHelper.getUpdateArea(); } virtual double getPriority() const override { typename BaseType::MutexType aGuard( BaseType::m_aMutex ); return maSpriteHelper.getPriority(); } protected: SpriteHelper maSpriteHelper; }; } /* vim:set shiftwidth=4 softtabstop=4 expandtab: */