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/* -*- 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.SetTimeout(mnStepTime);
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;
sal_Unicode const* const pResolutions[] = { u"16", u"32", u"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( OUString::Concat("private:graphicrepository/vcl/res/spinner-")
+ pResolutions[index]
+ "-" );
if ( i < 9 )
aURL.append( "0" );
aURL.append( OUString::number( sal_Int32( i + 1 ) ) + ".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: */
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