Resolves: #i121445# Added transparency support to the gallery

(cherry picked from commit cf417aec41decab94b5f1e82f6409e97a6c02fb5)

Conflicts:
extras/source/gallery/gallery_system/sg2.sdg
extras/source/gallery/gallery_system/sg2.thm
svx/inc/galtheme.hrc
svx/inc/svx/fontworkgallery.hxx
svx/inc/svx/gallery.hxx
svx/inc/svx/galtheme.hxx
svx/source/gallery2/galctrl.cxx
svx/source/gallery2/galexpl.cxx
svx/source/gallery2/galobj.cxx
svx/source/tbxctrls/fontworkgallery.cxx
vcl/inc/vcl/outdev.hxx
vcl/source/gdi/outdev6.cxx

Change-Id: I519a2cf4e16bb42ecfd9c4b48094e65adcc35599
(cherry picked from commit ddec662e8dc234b7196c1b3c28db5da743557ec6)

4 files changed, 102 insertions, 78 deletions

diff --git a/svx/source/gallery2/galctrl.cxx b/svx/source/gallery2/galctrl.cxx
index 848a230509c4..6811e95b2bdb 100644
--- a/svx/source/gallery2/galctrl.cxx
+++ b/svx/source/gallery2/galctrl.cxx
@@ -258,6 +258,16 @@ void GalleryPreview::PreviewMedia( const INetURLObject& rURL )
     }
 }
 
+void drawCheckered(OutputDevice& rOut, const Point& rPos, const Size& rSize)
+{
+    // draw checkered background
+    static const sal_uInt32 nLen(8);
+    static const Color aW(COL_WHITE);
+    static const Color aG(0xef, 0xef, 0xef);
+
+    rOut.DrawCheckered(rPos, rSize, nLen, aW, aG);
+}
+
 DBG_NAME(GalleryIconView)
 
 GalleryIconView::GalleryIconView( GalleryBrowser2* pParent, GalleryTheme* pTheme ) :
@@ -311,21 +321,37 @@ void GalleryIconView::UserDraw( const UserDrawEvent& rUDEvt )
             const Rectangle&    rRect = rUDEvt.GetRect();
             OutputDevice*       pDev = rUDEvt.GetDevice();
             Graphic             aGraphic;
+            bool bTransparent(false);
 
             if( pObj->IsThumbBitmap() )
             {
-                Bitmap aBmp( pObj->GetThumbBmp() );
+                BitmapEx aBitmapEx;
 
                 if( pObj->GetObjKind() == SGA_OBJ_SOUND )
-                    aBmp.Replace( COL_LIGHTMAGENTA, COL_WHITE );
+                {
+                    Bitmap aTemp = pObj->GetThumbBmp().GetBitmap();
+
+                    aTemp.Replace( COL_LIGHTMAGENTA, COL_WHITE );
+                    aBitmapEx = BitmapEx(aTemp);
+                }
+                else
+                {
+                    aBitmapEx = pObj->GetThumbBmp();
+                    bTransparent = aBitmapEx.IsTransparent();
+                }
 
-                if( ( pDev->GetBitCount() <= 8 ) && ( aBmp.GetBitCount() >= 8 ) )
-                    aBmp.Dither( BMP_DITHER_FLOYD );
+                if( ( pDev->GetBitCount() <= 8 ) && ( aBitmapEx.GetBitCount() >= 8 ) )
+                {
+                    aBitmapEx.Dither( BMP_DITHER_FLOYD );
+                }
 
-                aGraphic = aBmp;
+                aGraphic = aBitmapEx;
             }
             else
+            {
                 aGraphic = pObj->GetThumbMtf();
+                bTransparent = true;
+            }
 
             Size aSize( aGraphic.GetSizePixel( pDev ) );
 
@@ -352,6 +378,12 @@ void GalleryIconView::UserDraw( const UserDrawEvent& rUDEvt )
                 const Point aPos( ( ( rRect.GetWidth() - aSize.Width() ) >> 1 ) + rRect.Left(),
                                   ( ( rRect.GetHeight() - aSize.Height() ) >> 1 ) + rRect.Top() );
 
+                if(bTransparent)
+                {
+                    // draw checkered background
+                    drawCheckered(*pDev, aPos, aSize);
+                }
+
                 aGraphic.Draw( pDev, aPos, aSize );
             }
 
@@ -517,13 +549,24 @@ void GalleryListView::PaintField( OutputDevice& rDev, const Rectangle& rRect, sa
             {
                 Rectangle       aOutputRect( rRect.TopLeft(), Size( rRect.GetHeight(), rRect.GetHeight() ) );
                 GraphicObject   aGrfObj;
+                bool bTransparent(false);
 
                 if( pObj->GetObjKind() == SGA_OBJ_SOUND )
+                {
                     aGrfObj = Graphic( BitmapEx( GAL_RES( RID_SVXBMP_GALLERY_MEDIA ) ) );
+                }
                 else if( pObj->IsThumbBitmap() )
-                    aGrfObj = Graphic( pObj->GetThumbBmp() );
+                {
+                    const BitmapEx aBitmapEx(pObj->GetThumbBmp());
+
+                    bTransparent = aBitmapEx.IsTransparent();
+                    aGrfObj = Graphic(aBitmapEx);
+                }
                 else
+                {
                     aGrfObj = Graphic( pObj->GetThumbMtf() );
+                    bTransparent = true;
+                }
 
                 Size aSize( rDev.LogicToPixel( aGrfObj.GetPrefSize(), aGrfObj.GetPrefMapMode() ) );
 
@@ -553,6 +596,12 @@ void GalleryListView::PaintField( OutputDevice& rDev, const Rectangle& rRect, sa
                     const Point aPos( ( ( aOutputRect.GetWidth() - aSize.Width() ) >> 1 ) + aOutputRect.Left(),
                                       ( ( aOutputRect.GetHeight() - aSize.Height() ) >> 1 ) + aOutputRect.Top() );
 
+                    if(bTransparent)
+                    {
+                        // draw checkered background
+                        drawCheckered(rDev, aPos, aSize);
+                    }
+
                     aGrfObj.Draw( &rDev, aPos, aSize );
                 }
 
diff --git a/svx/source/gallery2/galexpl.cxx b/svx/source/gallery2/galexpl.cxx
index 1c505c797c81..13899ad21197 100644
--- a/svx/source/gallery2/galexpl.cxx
+++ b/svx/source/gallery2/galexpl.cxx
@@ -237,7 +237,7 @@ sal_Bool GalleryExplorer::InsertURL( sal_uIntPtr nThemeId, const String& rURL, c
 // ------------------------------------------------------------------------
 
 sal_Bool GalleryExplorer::GetGraphicObj( const String& rThemeName, sal_uIntPtr nPos,
-                                     Graphic* pGraphic, Bitmap* pThumb,
+                                     Graphic* pGraphic, BitmapEx* pThumb,
                                      sal_Bool bProgress )
 {
     Gallery*    pGal = ImplGetGallery();
@@ -266,7 +266,7 @@ sal_Bool GalleryExplorer::GetGraphicObj( const String& rThemeName, sal_uIntPtr n
 // ------------------------------------------------------------------------
 
 sal_Bool GalleryExplorer::GetGraphicObj( sal_uIntPtr nThemeId, sal_uIntPtr nPos,
-                                     Graphic* pGraphic, Bitmap* pThumb,
+                                     Graphic* pGraphic, BitmapEx* pThumb,
                                      sal_Bool bProgress )
 {
     Gallery* pGal = ImplGetGallery();
@@ -309,7 +309,7 @@ sal_uIntPtr GalleryExplorer::GetSdrObjCount( sal_uIntPtr nThemeId  )
 // ------------------------------------------------------------------------
 
 sal_Bool GalleryExplorer::GetSdrObj( const String& rThemeName, sal_uIntPtr nSdrModelPos,
-                                 SdrModel* pModel, Bitmap* pThumb )
+                                 SdrModel* pModel, BitmapEx* pThumb )
 {
     Gallery*    pGal = ImplGetGallery();
     sal_Bool        bRet = sal_False;
@@ -346,7 +346,7 @@ sal_Bool GalleryExplorer::GetSdrObj( const String& rThemeName, sal_uIntPtr nSdrM
 // ------------------------------------------------------------------------
 
 sal_Bool GalleryExplorer::GetSdrObj( sal_uIntPtr nThemeId, sal_uIntPtr nSdrModelPos,
-                                 SdrModel* pModel, Bitmap* pThumb )
+                                 SdrModel* pModel, BitmapEx* pThumb )
 {
     Gallery* pGal = ImplGetGallery();
     return( pGal ? GetSdrObj( pGal->GetThemeName( nThemeId ), nSdrModelPos, pModel, pThumb ) : sal_False );
diff --git a/svx/source/gallery2/galobj.cxx b/svx/source/gallery2/galobj.cxx
index ec88e83c18b6..29791da82d05 100644
--- a/svx/source/gallery2/galobj.cxx
+++ b/svx/source/gallery2/galobj.cxx
@@ -88,7 +88,8 @@ sal_Bool SgaObject::CreateThumb( const Graphic& rGraphic )
                 }
             }
 
-            aThumbBmp = aBmpEx.GetBitmap( &aWhite );
+            // take over BitmapEx
+            aThumbBmp = aBmpEx;
 
             if( ( aBmpSize.Width() <= S_THUMB ) && ( aBmpSize.Height() <= S_THUMB ) )
             {
@@ -123,7 +124,7 @@ sal_Bool SgaObject::CreateThumb( const Graphic& rGraphic )
             aSize.Height() = (sal_Int32)( S_THUMB / fFactor );
 
         const GraphicConversionParameters aParameters(aSize, false, true, true /*TODO: extra ", true" post-#i121194#*/);
-        aThumbBmp = rGraphic.GetBitmap(aParameters);
+        aThumbBmp = rGraphic.GetBitmapEx(aParameters);
 
         if( !aThumbBmp.IsEmpty() )
         {
@@ -341,7 +342,7 @@ SgaObjectSound::~SgaObjectSound()
 
 // ------------------------------------------------------------------------
 
-Bitmap SgaObjectSound::GetThumbBmp() const
+BitmapEx SgaObjectSound::GetThumbBmp() const
 {
     sal_uInt16 nId;
 
@@ -362,9 +363,8 @@ Bitmap SgaObjectSound::GetThumbBmp() const
     }
 
     const BitmapEx  aBmpEx( GAL_RES( nId ) );
-    const Color     aTransColor( COL_WHITE );
 
-    return aBmpEx.GetBitmap( &aTransColor );
+    return aBmpEx;
 }
 
 // ------------------------------------------------------------------------
@@ -506,76 +506,50 @@ sal_Bool SgaObjectSvDraw::CreateThumb( const FmFormModel& rModel )
     sal_Bool        bRet = sal_False;
 
     if ( CreateIMapGraphic( rModel, aGraphic, aImageMap ) )
+    {
         bRet = SgaObject::CreateThumb( aGraphic );
+    }
     else
     {
-        VirtualDevice aVDev;
+        const FmFormPage* pPage = static_cast< const FmFormPage* >(rModel.GetPage(0));
 
-        aVDev.SetOutputSizePixel( Size( S_THUMB*2, S_THUMB*2 ) );
-
-        bRet = DrawCentered( &aVDev, rModel );
-        if( bRet )
+        if(pPage)
         {
-            aThumbBmp = aVDev.GetBitmap( Point(), aVDev.GetOutputSizePixel() );
-
-            Size aMS( 2, 2 );
-            BmpFilterParam aParam( aMS );
-            aThumbBmp.Filter( BMP_FILTER_MOSAIC, &aParam );
-            aThumbBmp.Scale( Size( S_THUMB, S_THUMB ) );
+            const Rectangle aObjRect(pPage->GetAllObjBoundRect());
 
-            aThumbBmp.Convert( BMP_CONVERSION_8BIT_COLORS );
-        }
-    }
-
-    return bRet;
-}
+            if(aObjRect.GetWidth() && aObjRect.GetHeight())
+            {
+                VirtualDevice aVDev;
+                FmFormView aView(const_cast< FmFormModel* >(&rModel), &aVDev);
 
-// ------------------------------------------------------------------------
+                aView.ShowSdrPage(const_cast< FmFormPage* >(pPage));
+                aView.MarkAllObj();
+                aThumbBmp = aView.GetMarkedObjBitmapEx();
 
-sal_Bool SgaObjectSvDraw::DrawCentered( OutputDevice* pOut, const FmFormModel& rModel )
-{
-    const FmFormPage*   pPage = static_cast< const FmFormPage* >( rModel.GetPage( 0 ) );
-    sal_Bool                bRet = sal_False;
+                const Size aDiscreteSize(aThumbBmp.GetSizePixel());
 
-    if( pOut && pPage )
-    {
-        const Rectangle aObjRect( pPage->GetAllObjBoundRect() );
-        const Size      aOutSizePix( pOut->GetOutputSizePixel() );
+                if(aDiscreteSize.Width() && aDiscreteSize.Height())
+                {
+                    sal_uInt32 nTargetSizeX(S_THUMB);
+                    sal_uInt32 nTargetSizeY(S_THUMB);
 
-        if( aObjRect.GetWidth() && aObjRect.GetHeight() && aOutSizePix.Width() > 2 && aOutSizePix.Height() > 2 )
-        {
-            FmFormView      aView( const_cast< FmFormModel* >( &rModel ), pOut );
-            MapMode         aMap( rModel.GetScaleUnit() );
-            Rectangle       aDrawRectPix( Point( 1, 1 ), Size( aOutSizePix.Width() - 2, aOutSizePix.Height() - 2 ) );
-            const double    fFactor  = (double) aObjRect.GetWidth() / aObjRect.GetHeight();
-            Fraction        aFrac( FRound( fFactor < 1. ? aDrawRectPix.GetWidth() * fFactor : aDrawRectPix.GetWidth() ),
-                                   pOut->LogicToPixel( aObjRect.GetSize(), aMap ).Width() );
-
-            aMap.SetScaleX( aFrac );
-            aMap.SetScaleY( aFrac );
-
-            const Size aDrawSize( pOut->PixelToLogic( aDrawRectPix.GetSize(), aMap ) );
-            Point aOrigin( pOut->PixelToLogic( aDrawRectPix.TopLeft(), aMap ) );
-
-            aOrigin.X() += ( ( aDrawSize.Width() - aObjRect.GetWidth() ) >> 1 ) - aObjRect.Left();
-            aOrigin.Y() += ( ( aDrawSize.Height() - aObjRect.GetHeight() ) >> 1 ) - aObjRect.Top();
-            aMap.SetOrigin( aOrigin );
-
-            aView.SetPageVisible( sal_False );
-            aView.SetBordVisible( sal_False );
-            aView.SetGridVisible( sal_False );
-            aView.SetHlplVisible( sal_False );
-            aView.SetGlueVisible( sal_False );
-
-            pOut->Push();
-            pOut->SetMapMode( aMap );
-            aView.ShowSdrPage( const_cast< FmFormPage* >( pPage ));
-            aView.CompleteRedraw( pOut,
-                    Region(Rectangle(pOut->PixelToLogic(Point()),
-                                     pOut->GetOutputSize())));
-            pOut->Pop();
+                    if(aDiscreteSize.Width() > aDiscreteSize.Height())
+                    {
+                        nTargetSizeY = (aDiscreteSize.Height() * nTargetSizeX) / aDiscreteSize.Width();
+                    }
+                    else
+                    {
+                        nTargetSizeX = (aDiscreteSize.Width() * nTargetSizeY) / aDiscreteSize.Height();
+                    }
 
-            bRet = sal_True;
+                    if(!!aThumbBmp)
+                    {
+                        aThumbBmp.Scale(Size(nTargetSizeX, nTargetSizeY), BMP_SCALE_BESTQUALITY);
+                        aThumbBmp.Convert(BMP_CONVERSION_8BIT_COLORS);
+                        bRet = true;
+                    }
+                }
+            }
         }
     }
 
diff --git a/svx/source/gallery2/galtheme.cxx b/svx/source/gallery2/galtheme.cxx
index 35bb9218d8fb..a7624a02fe9d 100644
--- a/svx/source/gallery2/galtheme.cxx
+++ b/svx/source/gallery2/galtheme.cxx
@@ -769,7 +769,7 @@ GalleryThemeEntry* GalleryTheme::CreateThemeEntry( const INetURLObject& rURL, sa
 
 // -----------------------------------------------------------------------------
 
-sal_Bool GalleryTheme::GetThumb( sal_uIntPtr nPos, Bitmap& rBmp, sal_Bool )
+sal_Bool GalleryTheme::GetThumb( sal_uIntPtr nPos, BitmapEx& rBmp, sal_Bool )
 {
     SgaObject*  pObj = AcquireObject( nPos );
     sal_Bool        bRet = sal_False;
@@ -841,9 +841,10 @@ sal_Bool GalleryTheme::GetGraphic( sal_uIntPtr nPos, Graphic& rGraphic, sal_Bool
 
                 if( pObj )
                 {
-                    Bitmap aBmp( pObj->GetThumbBmp() );
-                    aBmp.Replace( COL_LIGHTMAGENTA, COL_WHITE );
-                    rGraphic = aBmp;
+                    rGraphic = pObj->GetThumbBmp();
+                    //Bitmap aBmp( pObj->GetThumbBmp() );
+                    //aBmp.Replace( COL_LIGHTMAGENTA, COL_WHITE );
+                    //rGraphic = aBmp;
                     ReleaseObject( pObj );
                     bRet = sal_True;
                 }