Compress Graphic functionallity added (currently only for Draw)

This is a initial commit of "Compress Graphics" functionallity.
Compress Graphics is accesible via pop-up menu option to graphics
objects. Currently this funtionallity is only available in Draw.
When the menu option is triggered, a Compress Graphics modal dialog
opens to define DPI, compression level and type of compression.
When OK is clicked, the graphics in Draw is compressed and exchanged.

The current implementation is not final as it needs handling in case
when the graphics is croped. Additionally cropped areas could be
removed when compressing, depending on a checkbox in the dialog.
Special cases of graphics need to be checked too, and some tests
would not hurt.

Change-Id: I9ec1a71f6ff4364a49b2521e42d88c3ba224dd87

1 files changed, 241 insertions, 0 deletions

diff --git a/svx/source/dialog/compressgraphicdialog.cxx b/svx/source/dialog/compressgraphicdialog.cxx
new file mode 100644
index 000000000000..b1bdb6ad9621
--- /dev/null
+++ b/svx/source/dialog/compressgraphicdialog.cxx
@@ -0,0 +1,241 @@
+/* -*- 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 <svx/dialogs.hrc>
+#include <svx/dialmgr.hxx>
+#include <vcl/graph.hxx>
+#include <compressgraphicdialog.hrc>
+#include <svx/compressgraphicdialog.hxx>
+#include <dlgunit.hxx>
+#include <vcl/virdev.hxx>
+#include <sfx2/dispatch.hxx>
+#include <vcl/svapp.hxx>
+#include <comphelper/processfactory.hxx>
+#include <svtools/filter.hxx>
+#include <com/sun/star/uno/Sequence.hxx>
+#include <com/sun/star/beans/XPropertySet.hpp>
+
+using namespace com::sun::star::uno;
+using namespace com::sun::star::beans;
+
+CompressGraphicsDialog::CompressGraphicsDialog( Window* pParent, const Graphic& rGraphic, const Size& rViewSize100mm, SfxBindings& rBindings ) :
+    ModalDialog       ( pParent, SVX_RES( RID_SVXDLG_COMPRESSGRAPHICS ) ),
+    m_aFixedText2X    ( this,    SVX_RES( FT_CG_2_X ) ),
+    m_aFixedText2     ( this,    SVX_RES( FT_CG_2 ) ),
+    m_aFixedText3X    ( this,    SVX_RES( FT_CG_3_X ) ),
+    m_aFixedText3     ( this,    SVX_RES( FT_CG_3 ) ),
+    m_aFixedText4X    ( this,    SVX_RES( FT_CG_4_X ) ),
+    m_aFixedText4     ( this,    SVX_RES( FT_CG_4 ) ),
+    m_aFixedText5X    ( this,    SVX_RES( FT_CG_5_X ) ),
+    m_aFixedText5     ( this,    SVX_RES( FT_CG_5 ) ),
+    m_aFixedText6X    ( this,    SVX_RES( FT_CG_6_X ) ),
+    m_aFixedText6     ( this,    SVX_RES( FT_CG_6 ) ),
+    m_aResolutionLB   ( this,    SVX_RES( LB_CG_RESOLUTION ) ),
+    m_aMFQuality      ( this,    SVX_RES( MF_CG_QUALITY ) ),
+    m_aLossless       ( this,    SVX_RES( CB_CG_LOSSLESS ) ),
+    m_aBtnOK          ( this,    SVX_RES( BUTTON_CG_OK ) ),
+    m_aBtnCancel      ( this,    SVX_RES( BUTTON_CG_CANCEL ) ),
+    m_aBtnHelp        ( this,    SVX_RES( BUTTON_CG_HELP ) ),
+    m_aBtnCalculate   ( this,    SVX_RES( BUTTON_CG_CALCULATE ) ),
+    m_aGraphic        ( rGraphic ),
+    m_aViewSize100mm  ( rViewSize100mm ),
+    m_rBindings       ( rBindings )
+{
+    FreeResource();
+
+    SetStyle(GetStyle() | WB_CENTER | WB_VCENTER);
+    m_aMFQuality.SetValue( 90L );
+    m_aResolutionLB.SetText(String("96 DPI"));
+    m_aResolutionLB.SetModifyHdl( LINK( this, CompressGraphicsDialog, ResolutionModifiedHdl ));
+    m_aBtnCalculate.SetClickHdl(  LINK( this, CompressGraphicsDialog, ClickHdl ) );
+    Update();
+}
+
+CompressGraphicsDialog::~CompressGraphicsDialog()
+{
+}
+
+void CompressGraphicsDialog::Update()
+{
+    const FieldUnit eFieldUnit = m_rBindings.GetDispatcher()->GetModule()->GetFieldUnit();
+    LocaleDataWrapper aLocaleWrapper( ::comphelper::getProcessServiceFactory(), Application::GetSettings().GetLocale() );
+    sal_Unicode cSep = aLocaleWrapper.getNumDecimalSep()[0];
+
+    VirtualDevice* pDummyVDev = new VirtualDevice();
+    pDummyVDev->EnableOutput( false );
+    pDummyVDev->SetMapMode( m_aGraphic.GetPrefMapMode() );
+
+    Size aPixelSize = m_aGraphic.GetSizePixel();
+    Size aOriginalSize100mm( pDummyVDev->PixelToLogic( m_aGraphic.GetSizePixel(), MAP_100TH_MM ) );
+
+    String aBitmapSizeString;
+    aBitmapSizeString += GetUnitString( aOriginalSize100mm.Width(), eFieldUnit, cSep );
+    aBitmapSizeString += String( " x " ) ;
+    aBitmapSizeString += GetUnitString( aOriginalSize100mm.Height(), eFieldUnit, cSep );
+    aBitmapSizeString += String( " ( " ) ;
+    aBitmapSizeString += UniString::CreateFromInt32(aPixelSize.Width());
+    aBitmapSizeString += String( " x " ) ;
+    aBitmapSizeString += UniString::CreateFromInt32(aPixelSize.Height());
+    aBitmapSizeString += String( " px )" ) ;
+    m_aFixedText2.SetText(aBitmapSizeString);
+
+    String aViewSizeString;
+
+    int aValX = aPixelSize.Width()  * 100 / MetricField::ConvertValue(m_aViewSize100mm.Width(),  2, MAP_100TH_MM, FUNIT_INCH);
+    //int aValY = aPixelSize.Height() * 100 / MetricField::ConvertValue(m_aViewSize100mm.Height(), 2, MAP_100TH_MM, FUNIT_INCH);
+
+    aViewSizeString += GetUnitString( m_aViewSize100mm.Width(), eFieldUnit, cSep );
+    aViewSizeString += String( " x " ) ;
+    aViewSizeString += GetUnitString( m_aViewSize100mm.Height(), eFieldUnit, cSep );
+    aViewSizeString += ( " at " ) ;
+    aViewSizeString += UniString::CreateFromInt32(aValX);
+    aViewSizeString += ( " DPI" ) ;
+    m_aFixedText3.SetText(aViewSizeString);
+
+    int aResolution = m_aResolutionLB.GetText().ToInt32();
+    int nPixelX = (sal_Int32)((double)MetricField::ConvertValue(m_aViewSize100mm.Width(),   2, MAP_100TH_MM, FUNIT_INCH) / 100 * aResolution );
+    int nPixelY = (sal_Int32)((double)MetricField::ConvertValue(m_aViewSize100mm.Height(),  2, MAP_100TH_MM, FUNIT_INCH) / 100 * aResolution );
+
+    SvMemoryStream aMemStream;
+    aMemStream.SetVersion( SOFFICE_FILEFORMAT_CURRENT );
+    m_aGraphic.ExportNative(aMemStream);
+    aMemStream.Seek( STREAM_SEEK_TO_END );
+    sal_Int32 aNativeSize = aMemStream.Tell();
+
+    String aCompressedSizeString;
+    aCompressedSizeString += UniString::CreateFromInt32(nPixelX);
+    aCompressedSizeString += String( " x " ) ;
+    aCompressedSizeString += UniString::CreateFromInt32(nPixelY);
+    aCompressedSizeString += ( " at " ) ;
+    aCompressedSizeString += UniString::CreateFromInt32(aResolution);
+    aCompressedSizeString += ( " DPI" ) ;
+    m_aFixedText4.SetText(aCompressedSizeString);
+
+    String aNativeSizeString;
+    aNativeSizeString += UniString::CreateFromInt32(aNativeSize / 1024);
+    aNativeSizeString += String( " kiB" ) ;
+
+    m_aFixedText5.SetText(aNativeSizeString);
+    m_aFixedText6.SetText(String("??"));
+}
+
+IMPL_LINK_NOARG( CompressGraphicsDialog, ResolutionModifiedHdl )
+{
+    Update();
+    return 0L;
+}
+
+IMPL_LINK_NOARG( CompressGraphicsDialog, ClickHdl )
+{
+    int aResolution = m_aResolutionLB.GetText().ToInt32();
+    sal_Int32 aSize = 0;
+
+    if ( aResolution > 0  )
+    {
+        long nPixelX = (long)((double) MetricField::ConvertValue(m_aViewSize100mm.Width(),   2, MAP_100TH_MM, FUNIT_INCH) / 100.0 * (double) aResolution );
+        long nPixelY = (long)((double) MetricField::ConvertValue(m_aViewSize100mm.Height(),  2, MAP_100TH_MM, FUNIT_INCH) / 100.0 * (double) aResolution );
+
+        BitmapEx bitmap = m_aGraphic.GetBitmapEx();
+        bitmap.Scale(Size(nPixelX, nPixelY), BMP_SCALE_BEST);
+        Graphic aScaledGraphic = Graphic (bitmap);
+        GraphicFilter& rFilter = GraphicFilter::GetGraphicFilter();
+
+        Sequence< PropertyValue > aFilterData( 3 );
+        aFilterData[ 0 ].Name = "Interlaced";
+        aFilterData[ 0 ].Value <<= (sal_Int32) 0;
+        aFilterData[ 1 ].Name = "Compression";
+        aFilterData[ 1 ].Value <<= (sal_Int32) 9;
+        aFilterData[ 2 ].Name = "Quality";
+        aFilterData[ 2 ].Value <<= (sal_Int32) m_aMFQuality.GetValue();
+
+        SvMemoryStream aMemStream;
+        aMemStream.SetVersion( SOFFICE_FILEFORMAT_CURRENT );
+
+        if ( m_aLossless.IsChecked() )
+        {
+            sal_uInt16 nFilterFormat = rFilter.GetExportFormatNumberForShortName( String( "png" ) );
+            rFilter.ExportGraphic( aScaledGraphic, String("test.png"), aMemStream, nFilterFormat, &aFilterData );
+            aMemStream.Seek( STREAM_SEEK_TO_END );
+            aSize = aMemStream.Tell();
+        }
+        else
+        {
+            sal_uInt16 nFilterFormat = rFilter.GetExportFormatNumberForShortName( String( "jpg" ) );
+            rFilter.ExportGraphic( aScaledGraphic, String("test.jpg"), aMemStream, nFilterFormat, &aFilterData );
+            aMemStream.Seek( STREAM_SEEK_TO_END );
+            aSize = aMemStream.Tell();
+        }
+    }
+
+    if ( aSize > 0 )
+    {
+        String aNewSizeString;
+        aNewSizeString += UniString::CreateFromInt32(aSize / 1024);
+        aNewSizeString += String( " kiB" ) ;
+        m_aFixedText6.SetText(aNewSizeString);
+    }
+    return 0L;
+}
+
+Graphic CompressGraphicsDialog::GetCompressedGraphic()
+{
+    int aResolution = m_aResolutionLB.GetText().ToInt32();
+
+    if ( aResolution > 0  )
+    {
+        long nPixelX = (long)((double) MetricField::ConvertValue( m_aViewSize100mm.Width(),   2, MAP_100TH_MM, FUNIT_INCH) / 100.0 * (double) aResolution );
+        long nPixelY = (long)((double) MetricField::ConvertValue( m_aViewSize100mm.Height(),  2, MAP_100TH_MM, FUNIT_INCH) / 100.0 * (double) aResolution );
+
+        BitmapEx bitmap = m_aGraphic.GetBitmapEx();
+        bitmap.Scale(Size(nPixelX, nPixelY), BMP_SCALE_BEST);
+        Graphic aScaledGraphic = Graphic (bitmap);
+        GraphicFilter& rFilter = GraphicFilter::GetGraphicFilter();
+
+        Sequence< PropertyValue > aFilterData( 3 );
+        aFilterData[ 0 ].Name = "Interlaced";
+        aFilterData[ 0 ].Value <<= (sal_Int32) 0;
+        aFilterData[ 1 ].Name = "Compression";
+        aFilterData[ 1 ].Value <<= (sal_Int32) 9;
+        aFilterData[ 2 ].Name = "Quality";
+        aFilterData[ 2 ].Value <<= (sal_Int32) m_aMFQuality.GetValue();
+
+        SvMemoryStream aMemStream;
+        aMemStream.SetVersion( SOFFICE_FILEFORMAT_CURRENT );
+        Graphic aResultGraphic = Graphic ();
+
+        if ( m_aLossless.IsChecked() )
+        {
+            sal_uInt16 nFilterFormat = rFilter.GetExportFormatNumberForShortName( String( "png" ) );
+            rFilter.ExportGraphic( aScaledGraphic, String("test.png"), aMemStream, nFilterFormat, &aFilterData );
+            aMemStream.Seek( STREAM_SEEK_TO_BEGIN );
+            rFilter.ImportGraphic( aResultGraphic, String("test.png"), aMemStream );
+        }
+        else
+        {
+            sal_uInt16 nFilterFormat = rFilter.GetExportFormatNumberForShortName( String( "jpg" ) );
+            rFilter.ExportGraphic( aScaledGraphic, String("test.jpg"), aMemStream, nFilterFormat, &aFilterData );
+            aMemStream.Seek( STREAM_SEEK_TO_BEGIN );
+            rFilter.ImportGraphic( aResultGraphic, String("test.jpg"), aMemStream );
+        }
+        return aResultGraphic;
+    }
+    return m_aGraphic;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */