| /************************************************************** |
| * |
| * 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 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| *************************************************************/ |
| |
| |
| |
| #include "timer.hxx" |
| |
| #include <vector> |
| #include <list> |
| #include <vcl/timer.hxx> |
| #include <com/sun/star/awt/XLayoutContainer.hpp> |
| |
| namespace layoutimpl |
| { |
| using namespace ::com::sun::star; |
| |
| class AllocateTimer : public Timer |
| { |
| typedef std::list< uno::Reference< awt::XLayoutContainer > > ContainerList; |
| ContainerList mxContainers; |
| uno::Reference< awt::XLayoutContainer > mxLastAdded; |
| |
| public: |
| AllocateTimer() |
| { |
| // timer set to 0 -- just process it as soon as it gets idle |
| SetTimeout( 0 ); |
| } |
| |
| static inline bool isParentOf( uno::Reference< awt::XLayoutContainer > xParent, |
| uno::Reference< awt::XLayoutContainer > xWidget ) |
| { |
| while ( xWidget.is() ) |
| { |
| if ( xWidget == xParent ) |
| return true; |
| xWidget = uno::Reference< awt::XLayoutContainer >( xWidget->getParent(), uno::UNO_QUERY ); |
| } |
| return false; |
| } |
| |
| static inline void eraseChildren( ContainerList::iterator &it, ContainerList &list ) |
| { |
| ContainerList::iterator jt = list.begin(); |
| while ( jt != list.end() ) |
| { |
| if ( it != jt && isParentOf( *it, *jt ) ) |
| jt = list.erase( jt ); |
| else |
| jt++; |
| } |
| } |
| |
| static inline bool isContainerDamaged( uno::Reference< awt::XLayoutContainer > xContainer ) |
| { |
| uno::Reference< awt::XLayoutConstrains > xConstrains( xContainer, uno::UNO_QUERY ); |
| awt::Size lastReq( xContainer->getRequestedSize() ); |
| awt::Size curReq( xConstrains->getMinimumSize() ); |
| return lastReq.Width != curReq.Width || lastReq.Height != curReq.Height; |
| } |
| |
| void add( const uno::Reference< awt::XLayoutContainer > &xContainer ) |
| { |
| // small optimization |
| if ( mxLastAdded == xContainer ) |
| return; |
| mxLastAdded = xContainer; |
| |
| mxContainers.push_back( xContainer ); |
| } |
| |
| virtual void Timeout() |
| { |
| mxLastAdded = uno::Reference< awt::XLayoutContainer >(); |
| |
| // 1. remove duplications and children |
| for ( ContainerList::iterator it = mxContainers.begin(); |
| it != mxContainers.end(); it++ ) |
| eraseChildren( it, mxContainers ); |
| |
| // 2. check damage extent |
| for ( ContainerList::iterator it = mxContainers.begin(); |
| it != mxContainers.end(); it++ ) |
| { |
| uno::Reference< awt::XLayoutContainer > xContainer = *it; |
| while ( xContainer->getParent().is() && isContainerDamaged( xContainer ) ) |
| { |
| xContainer = uno::Reference< awt::XLayoutContainer >( |
| xContainer->getParent(), uno::UNO_QUERY ); |
| } |
| |
| if ( *it != xContainer ) |
| { |
| // 2.2 replace it with parent |
| *it = xContainer; |
| |
| // 2.3 remove children of new parent |
| eraseChildren( it, mxContainers ); |
| } |
| } |
| |
| // 3. force re-calculations |
| for ( ContainerList::iterator it = mxContainers.begin(); |
| it != mxContainers.end(); it++ ) |
| (*it)->allocateArea( (*it)->getAllocatedArea() ); |
| } |
| }; |
| |
| static void AddResizeTimeout( const uno::Reference< awt::XLayoutContainer > &xCont ) |
| { |
| static AllocateTimer timer; |
| timer.add( xCont ); |
| timer.Start(); |
| } |
| |
| LayoutUnit::LayoutUnit() : LayoutUnit_Base() |
| { |
| } |
| |
| void SAL_CALL LayoutUnit::queueResize( const uno::Reference< awt::XLayoutContainer > &xContainer ) |
| throw( uno::RuntimeException ) |
| { |
| AddResizeTimeout( xContainer ); |
| } |
| |
| } |