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Diffstat (limited to 'slideshow/source/engine/pointersymbol.cxx')
| -rw-r--r-- | slideshow/source/engine/pointersymbol.cxx | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/slideshow/source/engine/pointersymbol.cxx b/slideshow/source/engine/pointersymbol.cxx new file mode 100644 index 0000000000..9c0d6fa78a --- /dev/null +++ b/slideshow/source/engine/pointersymbol.cxx @@ -0,0 +1,197 @@ +/* -*- 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 . + */ + + +#include <canvas/canvastools.hxx> + +#include <cppcanvas/customsprite.hxx> + +#include <basegfx/point/b2dpoint.hxx> +#include <basegfx/vector/b2dsize.hxx> +#include <basegfx/vector/b2dvector.hxx> + +#include <com/sun/star/rendering/XCanvas.hpp> +#include <com/sun/star/presentation/XSlideShowView.hpp> +#include <comphelper/diagnose_ex.hxx> + +#include "pointersymbol.hxx" +#include <eventmultiplexer.hxx> + +#include <algorithm> +#include <utility> + + +using namespace com::sun::star; + +namespace slideshow::internal { + +PointerSymbolSharedPtr PointerSymbol::create( const uno::Reference<rendering::XBitmap>& xBitmap, + ScreenUpdater& rScreenUpdater, + EventMultiplexer& rEventMultiplexer, + const UnoViewContainer& rViewContainer ) +{ + PointerSymbolSharedPtr pRet( + new PointerSymbol( xBitmap, + rScreenUpdater, + rViewContainer )); + + rEventMultiplexer.addViewHandler( pRet ); + + return pRet; +} + +PointerSymbol::PointerSymbol( uno::Reference<rendering::XBitmap> xBitmap, + ScreenUpdater& rScreenUpdater, + const UnoViewContainer& rViewContainer ) : + mxBitmap(std::move(xBitmap)), + maViews(), + mrScreenUpdater( rScreenUpdater ), + maPos(), + mbVisible(false) +{ + for( const auto& rView : rViewContainer ) + viewAdded( rView ); +} + +void PointerSymbol::setVisible( const bool bVisible ) +{ + if( mbVisible == bVisible ) + return; + + mbVisible = bVisible; + + for( const auto& rView : maViews ) + { + if( rView.second ) + { + if( bVisible ) + rView.second->show(); + else + rView.second->hide(); + } + } + + // sprites changed, need a screen update for this frame. + mrScreenUpdater.requestImmediateUpdate(); +} + +basegfx::B2DPoint PointerSymbol::calcSpritePos(UnoViewSharedPtr const & rView) const +{ + const awt::Rectangle aViewArea( rView->getUnoView()->getCanvasArea() ); + const geometry::IntegerSize2D realTranslationOffset ( rView->getTranslationOffset() ); + + return basegfx::B2DPoint( + realTranslationOffset.Width + (aViewArea.Width * maPos.X), + realTranslationOffset.Height + (aViewArea.Height * maPos.Y)); +} + +void PointerSymbol::viewAdded( const UnoViewSharedPtr& rView ) +{ + cppcanvas::CustomSpriteSharedPtr sprite; + + try + { + const geometry::IntegerSize2D spriteSize( mxBitmap->getSize() ); + sprite = rView->createSprite( basegfx::B2DSize( spriteSize.Width, + spriteSize.Height ), + 1000.0 ); // sprite should be in front of all + // other sprites + rendering::ViewState viewState; + canvas::tools::initViewState( viewState ); + rendering::RenderState renderState; + canvas::tools::initRenderState( renderState ); + sprite->getContentCanvas()->getUNOCanvas()->drawBitmap( + mxBitmap, viewState, renderState ); + + sprite->setAlpha( 0.9 ); + sprite->movePixel( calcSpritePos( rView ) ); + if( mbVisible ) + sprite->show(); + } + catch( uno::Exception& ) + { + TOOLS_WARN_EXCEPTION( "slideshow", "" ); + } + + maViews.emplace_back( rView, sprite ); +} + +void PointerSymbol::viewRemoved( const UnoViewSharedPtr& rView ) +{ + std::erase_if( + maViews, + [&rView] + ( const ViewsVecT::value_type& cp ) + { return rView == cp.first; } ); +} + +void PointerSymbol::viewChanged( const UnoViewSharedPtr& rView ) +{ + // find entry corresponding to modified view + ViewsVecT::iterator aModifiedEntry( + std::find_if( + maViews.begin(), + maViews.end(), + [&rView] + ( const ViewsVecT::value_type& cp ) + { return rView == cp.first; } ) ); + + OSL_ASSERT( aModifiedEntry != maViews.end() ); + if( aModifiedEntry == maViews.end() ) + return; + + if( aModifiedEntry->second ) + aModifiedEntry->second->movePixel( + calcSpritePos(aModifiedEntry->first) ); +} + +void PointerSymbol::viewsChanged() +{ + // reposition sprites on all views + for( const auto& rView : maViews ) + { + if( rView.second ) + rView.second->movePixel( + calcSpritePos( rView.first ) ); + } +} + +void PointerSymbol::viewsChanged(const geometry::RealPoint2D pos) +{ + if( pos.X == maPos.X && pos.Y == maPos.Y ) + return; + + maPos = pos; + + // reposition sprites on all views + for( const auto& rView : maViews ) + { + if( rView.second ) + { + rView.second->movePixel( + calcSpritePos( rView.first ) ); + mrScreenUpdater.notifyUpdate(); + mrScreenUpdater.commitUpdates(); + } + } +} + +} // namespace slideshow::internal + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |