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| -rw-r--r-- | vcl/source/control/throbber.cxx | 235 |
1 files changed, 235 insertions, 0 deletions
diff --git a/vcl/source/control/throbber.cxx b/vcl/source/control/throbber.cxx new file mode 100644 index 000000000..d7dc3e4a7 --- /dev/null +++ b/vcl/source/control/throbber.cxx @@ -0,0 +1,235 @@ +/* -*- 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 <vcl/toolkit/throbber.hxx> +#include <vcl/svapp.hxx> + +#include <com/sun/star/uno/XComponentContext.hpp> +#include <com/sun/star/graphic/GraphicProvider.hpp> +#include <com/sun/star/graphic/XGraphicProvider.hpp> +#include <com/sun/star/awt/ImageScaleMode.hpp> + +#include <comphelper/namedvaluecollection.hxx> +#include <comphelper/processfactory.hxx> +#include <rtl/ustrbuf.hxx> +#include <sal/log.hxx> +#include <tools/urlobj.hxx> + +#include <limits> + +using ::com::sun::star::uno::Reference; +using ::com::sun::star::graphic::XGraphic; +using ::com::sun::star::graphic::XGraphicProvider; +using ::com::sun::star::uno::Exception; +namespace ImageScaleMode = ::com::sun::star::awt::ImageScaleMode; + +Throbber::Throbber( vcl::Window* i_parentWindow, WinBits i_style ) + :ImageControl( i_parentWindow, i_style ) + ,mbRepeat( true ) + ,mnStepTime( 100 ) + ,mnCurStep( 0 ) + ,maWaitTimer("Throbber maWaitTimer") +{ + maWaitTimer.SetTimeout( mnStepTime ); + maWaitTimer.SetInvokeHandler( LINK( this, Throbber, TimeOutHdl ) ); + + SetScaleMode( ImageScaleMode::NONE ); + initImages(); +} + +Throbber::~Throbber() +{ + disposeOnce(); +} + +void Throbber::dispose() +{ + maWaitTimer.Stop(); + ImageControl::dispose(); +} + +namespace +{ + ::std::vector< Image > lcl_loadImageSet( const Throbber::ImageSet i_imageSet ) + { + ::std::vector< Image > aImages; + + const Reference< css::uno::XComponentContext > aContext( ::comphelper::getProcessComponentContext() ); + const Reference< XGraphicProvider > xGraphicProvider( css::graphic::GraphicProvider::create(aContext) ); + + ::std::vector< OUString > aImageURLs( Throbber::getDefaultImageURLs( i_imageSet ) ); + aImages.reserve( aImageURLs.size() ); + + ::comphelper::NamedValueCollection aMediaProperties; + for ( const auto& rImageURL : aImageURLs ) + { + Reference< XGraphic > xGraphic; + aMediaProperties.put( "URL", rImageURL ); + xGraphic = xGraphicProvider->queryGraphic( aMediaProperties.getPropertyValues() ); + aImages.emplace_back( xGraphic ); + } + + return aImages; + } +} + +void Throbber::Resize() +{ + ImageControl::Resize(); + initImages(); +} + +void Throbber::initImages() +{ + try + { + ::std::vector< ::std::vector< Image > > aImageSets + { + lcl_loadImageSet( ImageSet::N16px ), + lcl_loadImageSet( ImageSet::N32px ), + lcl_loadImageSet( ImageSet::N64px ) + }; + + // find the best matching image set (size-wise) + const ::Size aWindowSizePixel = GetSizePixel(); + size_t nPreferredSet = 0; + if ( aImageSets.size() > 1 ) + { + tools::Long nMinimalDistance = ::std::numeric_limits< tools::Long >::max(); + for ( ::std::vector< ::std::vector< Image > >::const_iterator check = aImageSets.begin(); + check != aImageSets.end(); + ++check + ) + { + if ( check->empty() ) + { + SAL_WARN( "vcl.control", "Throbber::initImages: illegal image!" ); + continue; + } + + const Size aImageSize = (*check)[0].GetSizePixel(); + + if ( ( aImageSize.Width() > aWindowSizePixel.Width() ) + || ( aImageSize.Height() > aWindowSizePixel.Height() ) + ) + // do not use an image set which doesn't fit into the window + continue; + + const sal_Int64 distance = + ( aWindowSizePixel.Width() - aImageSize.Width() ) * ( aWindowSizePixel.Width() - aImageSize.Width() ) + + ( aWindowSizePixel.Height() - aImageSize.Height() ) * ( aWindowSizePixel.Height() - aImageSize.Height() ); + if ( distance < nMinimalDistance ) + { + nMinimalDistance = distance; + nPreferredSet = check - aImageSets.begin(); + } + } + } + + if ( nPreferredSet < aImageSets.size() ) + setImageList( std::vector(aImageSets[nPreferredSet]) ); + } + catch( const Exception& ) + { + } +} + +void Throbber::start() +{ + maWaitTimer.Start(); +} + +void Throbber::stop() +{ + maWaitTimer.Stop(); +} + +bool Throbber::isRunning() const +{ + return maWaitTimer.IsActive(); +} + +void Throbber::setImageList( ::std::vector< Image > && i_images ) +{ + SAL_WARN_IF( i_images.size()>=SAL_MAX_INT32, "vcl.control", "Throbber::setImageList: too many images!" ); + + maImageList = std::move(i_images); + + const Image aInitialImage( !maImageList.empty() ? maImageList[ 0 ] : Image() ); + SetImage( aInitialImage ); +} + +::std::vector< OUString > Throbber::getDefaultImageURLs( const ImageSet i_imageSet ) +{ + ::std::vector< OUString > aImageURLs; + + char const* const pResolutions[] = { "16", "32", "64" }; + size_t const nImageCounts[] = { 6, 12, 12 }; + + size_t index = 0; + switch ( i_imageSet ) + { + case ImageSet::N16px: index = 0; break; + case ImageSet::N32px: index = 1; break; + case ImageSet::N64px: index = 2; break; + } + + aImageURLs.reserve( nImageCounts[index] ); + for ( size_t i=0; i<nImageCounts[index]; ++i ) + { + OUStringBuffer aURL; + aURL.append( "private:graphicrepository/vcl/res/spinner-" ); + aURL.appendAscii( pResolutions[index] ); + aURL.append( "-" ); + if ( i < 9 ) + aURL.append( "0" ); + aURL.append ( sal_Int32( i + 1 ) ); + aURL.append( ".png" ); + + aImageURLs.push_back( aURL.makeStringAndClear() ); + } + + return aImageURLs; +} + +IMPL_LINK_NOARG(Throbber, TimeOutHdl, Timer *, void) +{ + SolarMutexGuard aGuard; + if ( maImageList.empty() ) + return; + + if ( mnCurStep < static_cast<sal_Int32>(maImageList.size()-1) ) + ++mnCurStep; + else + { + if ( mbRepeat ) + { + // start over + mnCurStep = 0; + } + else + { + stop(); + } + } + + SetImage( maImageList[ mnCurStep ] ); +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |