1 files changed, 162 insertions, 0 deletions
diff --git a/vcl/source/outdev/mask.cxx b/vcl/source/outdev/mask.cxx
new file mode 100644
index 0000000000..004b248785
--- /dev/null
+++ b/vcl/source/outdev/mask.cxx
@@ -0,0 +1,162 @@
+/* -*- 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/metaact.hxx>
+#include <vcl/virdev.hxx>
+
+#include <salgdi.hxx>
+#include <salbmp.hxx>
+
+#include <cassert>
+
+void OutputDevice::DrawMask( const Point& rDestPt,
+                             const Bitmap& rBitmap, const Color& rMaskColor )
+{
+    assert(!is_double_buffered_window());
+
+    const Size aSizePix( rBitmap.GetSizePixel() );
+    DrawMask( rDestPt, PixelToLogic( aSizePix ), Point(), aSizePix, rBitmap, rMaskColor, MetaActionType::MASK );
+}
+
+void OutputDevice::DrawMask( const Point& rDestPt, const Size& rDestSize,
+                             const Bitmap& rBitmap, const Color& rMaskColor )
+{
+    assert(!is_double_buffered_window());
+
+    DrawMask( rDestPt, rDestSize, Point(), rBitmap.GetSizePixel(), rBitmap, rMaskColor, MetaActionType::MASKSCALE );
+}
+
+void OutputDevice::DrawMask( const Point& rDestPt, const Size& rDestSize,
+                             const Point& rSrcPtPixel, const Size& rSrcSizePixel,
+                             const Bitmap& rBitmap, const Color& rMaskColor)
+{
+
+    assert(!is_double_buffered_window());
+
+    DrawMask( rDestPt, rDestSize, rSrcPtPixel, rSrcSizePixel, rBitmap, rMaskColor, MetaActionType::MASKSCALEPART );
+}
+
+void OutputDevice::DrawMask( const Point& rDestPt, const Size& rDestSize,
+                             const Point& rSrcPtPixel, const Size& rSrcSizePixel,
+                             const Bitmap& rBitmap, const Color& rMaskColor,
+                             const MetaActionType nAction )
+{
+    assert(!is_double_buffered_window());
+
+    if( ImplIsRecordLayout() )
+        return;
+
+    if( RasterOp::Invert == meRasterOp )
+    {
+        DrawRect( tools::Rectangle( rDestPt, rDestSize ) );
+        return;
+    }
+
+    if ( mpMetaFile )
+    {
+        switch( nAction )
+        {
+            case MetaActionType::MASK:
+                mpMetaFile->AddAction( new MetaMaskAction( rDestPt,
+                    rBitmap, rMaskColor ) );
+            break;
+
+            case MetaActionType::MASKSCALE:
+                mpMetaFile->AddAction( new MetaMaskScaleAction( rDestPt,
+                    rDestSize, rBitmap, rMaskColor ) );
+            break;
+
+            case MetaActionType::MASKSCALEPART:
+                mpMetaFile->AddAction( new MetaMaskScalePartAction( rDestPt, rDestSize,
+                    rSrcPtPixel, rSrcSizePixel, rBitmap, rMaskColor ) );
+            break;
+
+            default: break;
+        }
+    }
+
+    if ( !IsDeviceOutputNecessary() )
+        return;
+
+    if ( !mpGraphics && !AcquireGraphics() )
+        return;
+
+    if ( mbInitClipRegion )
+        InitClipRegion();
+
+    if ( mbOutputClipped )
+        return;
+
+    DrawDeviceMask( rBitmap, rMaskColor, rDestPt, rDestSize, rSrcPtPixel, rSrcSizePixel );
+
+}
+
+void OutputDevice::DrawDeviceMask( const Bitmap& rMask, const Color& rMaskColor,
+                              const Point& rDestPt, const Size& rDestSize,
+                              const Point& rSrcPtPixel, const Size& rSrcSizePixel )
+{
+    assert(!is_double_buffered_window());
+
+    const std::shared_ptr<SalBitmap>& xImpBmp = rMask.ImplGetSalBitmap();
+    if (xImpBmp)
+    {
+        SalTwoRect aPosAry(rSrcPtPixel.X(), rSrcPtPixel.Y(), rSrcSizePixel.Width(), rSrcSizePixel.Height(),
+                           ImplLogicXToDevicePixel(rDestPt.X()), ImplLogicYToDevicePixel(rDestPt.Y()),
+                           ImplLogicWidthToDevicePixel(rDestSize.Width()),
+                           ImplLogicHeightToDevicePixel(rDestSize.Height()));
+
+        // we don't want to mirror via coordinates
+        const BmpMirrorFlags nMirrFlags = AdjustTwoRect( aPosAry, xImpBmp->GetSize() );
+
+        // check if output is necessary
+        if( aPosAry.mnSrcWidth && aPosAry.mnSrcHeight && aPosAry.mnDestWidth && aPosAry.mnDestHeight )
+        {
+
+            if( nMirrFlags != BmpMirrorFlags::NONE )
+            {
+                Bitmap aTmp( rMask );
+                aTmp.Mirror( nMirrFlags );
+                mpGraphics->DrawMask( aPosAry, *aTmp.ImplGetSalBitmap(),
+                                      rMaskColor, *this);
+            }
+            else
+                mpGraphics->DrawMask( aPosAry, *xImpBmp, rMaskColor, *this );
+
+        }
+    }
+
+    // TODO: Use mask here
+    if( !mpAlphaVDev )
+        return;
+
+    const Bitmap& rAlphaMask( rMask.CreateMask( rMaskColor ) );
+
+    // #i25167# Restrict mask painting to _opaque_ areas
+    // of the mask, otherwise we spoil areas where no
+    // bitmap content was ever visible. Interestingly
+    // enough, this can be achieved by taking the mask as
+    // the transparency mask of itself
+    mpAlphaVDev->DrawBitmapEx( rDestPt,
+                               rDestSize,
+                               rSrcPtPixel,
+                               rSrcSizePixel,
+                               BitmapEx( rAlphaMask, rMask ) );
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */