Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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: */