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-rw-r--r--vcl/source/outdev/clipping.cxx227
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diff --git a/vcl/source/outdev/clipping.cxx b/vcl/source/outdev/clipping.cxx
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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 <sal/config.h>
+#include <osl/diagnose.h>
+
+#include <tools/debug.hxx>
+#include <vcl/metaact.hxx>
+#include <vcl/virdev.hxx>
+#include <vcl/gdimtf.hxx>
+#include <vcl/outdev.hxx>
+
+#include <salgdi.hxx>
+
+void OutputDevice::SaveBackground(VirtualDevice& rSaveDevice,
+ const Point& rPos, const Size& rSize, const Size& rBackgroundSize) const
+{
+ rSaveDevice.DrawOutDev(Point(), rBackgroundSize, rPos, rSize, *this);
+}
+
+vcl::Region OutputDevice::GetClipRegion() const
+{
+
+ return PixelToLogic( maRegion );
+}
+
+void OutputDevice::SetClipRegion()
+{
+
+ if ( mpMetaFile )
+ mpMetaFile->AddAction( new MetaClipRegionAction( vcl::Region(), false ) );
+
+ SetDeviceClipRegion( nullptr );
+
+ if( mpAlphaVDev )
+ mpAlphaVDev->SetClipRegion();
+}
+
+void OutputDevice::SetClipRegion( const vcl::Region& rRegion )
+{
+
+ if ( mpMetaFile )
+ mpMetaFile->AddAction( new MetaClipRegionAction( rRegion, true ) );
+
+ if ( rRegion.IsNull() )
+ {
+ SetDeviceClipRegion( nullptr );
+ }
+ else
+ {
+ vcl::Region aRegion = LogicToPixel( rRegion );
+ SetDeviceClipRegion( &aRegion );
+ }
+
+ if( mpAlphaVDev )
+ mpAlphaVDev->SetClipRegion( rRegion );
+}
+
+bool OutputDevice::SelectClipRegion( const vcl::Region& rRegion, SalGraphics* pGraphics )
+{
+ DBG_TESTSOLARMUTEX();
+
+ if( !pGraphics )
+ {
+ if( !mpGraphics && !AcquireGraphics() )
+ return false;
+ assert(mpGraphics);
+ pGraphics = mpGraphics;
+ }
+
+ bool bClipRegion = pGraphics->SetClipRegion( rRegion, *this );
+ OSL_ENSURE( bClipRegion, "OutputDevice::SelectClipRegion() - can't create region" );
+ return bClipRegion;
+}
+
+void OutputDevice::MoveClipRegion( tools::Long nHorzMove, tools::Long nVertMove )
+{
+
+ if ( mbClipRegion )
+ {
+ if( mpMetaFile )
+ mpMetaFile->AddAction( new MetaMoveClipRegionAction( nHorzMove, nVertMove ) );
+
+ maRegion.Move( ImplLogicWidthToDevicePixel( nHorzMove ),
+ ImplLogicHeightToDevicePixel( nVertMove ) );
+ mbInitClipRegion = true;
+ }
+
+ if( mpAlphaVDev )
+ mpAlphaVDev->MoveClipRegion( nHorzMove, nVertMove );
+}
+
+void OutputDevice::IntersectClipRegion( const tools::Rectangle& rRect )
+{
+
+ if ( mpMetaFile )
+ mpMetaFile->AddAction( new MetaISectRectClipRegionAction( rRect ) );
+
+ tools::Rectangle aRect = LogicToPixel( rRect );
+ maRegion.Intersect( aRect );
+ mbClipRegion = true;
+ mbInitClipRegion = true;
+
+ if( mpAlphaVDev )
+ mpAlphaVDev->IntersectClipRegion( rRect );
+}
+
+void OutputDevice::IntersectClipRegion( const vcl::Region& rRegion )
+{
+
+ if(!rRegion.IsNull())
+ {
+ if ( mpMetaFile )
+ mpMetaFile->AddAction( new MetaISectRegionClipRegionAction( rRegion ) );
+
+ vcl::Region aRegion = LogicToPixel( rRegion );
+ maRegion.Intersect( aRegion );
+ mbClipRegion = true;
+ mbInitClipRegion = true;
+ }
+
+ if( mpAlphaVDev )
+ mpAlphaVDev->IntersectClipRegion( rRegion );
+}
+
+void OutputDevice::InitClipRegion()
+{
+ DBG_TESTSOLARMUTEX();
+
+ if ( mbClipRegion )
+ {
+ if ( maRegion.IsEmpty() )
+ mbOutputClipped = true;
+ else
+ {
+ mbOutputClipped = false;
+
+ // #102532# Respect output offset also for clip region
+ vcl::Region aRegion = ClipToDeviceBounds(ImplPixelToDevicePixel(maRegion));
+
+ if ( aRegion.IsEmpty() )
+ {
+ mbOutputClipped = true;
+ }
+ else
+ {
+ mbOutputClipped = false;
+ SelectClipRegion( aRegion );
+ }
+ }
+
+ mbClipRegionSet = true;
+ }
+ else
+ {
+ if ( mbClipRegionSet )
+ {
+ if (mpGraphics)
+ mpGraphics->ResetClipRegion();
+ mbClipRegionSet = false;
+ }
+
+ mbOutputClipped = false;
+ }
+
+ mbInitClipRegion = false;
+}
+
+vcl::Region OutputDevice::ClipToDeviceBounds(vcl::Region aRegion) const
+{
+ aRegion.Intersect(tools::Rectangle{mnOutOffX,
+ mnOutOffY,
+ mnOutOffX + GetOutputWidthPixel() - 1,
+ mnOutOffY + GetOutputHeightPixel() - 1
+ });
+ return aRegion;
+}
+
+vcl::Region OutputDevice::GetActiveClipRegion() const
+{
+ return GetClipRegion();
+}
+
+void OutputDevice::ClipToPaintRegion(tools::Rectangle& /*rDstRect*/)
+{
+ // this is only used in Window, but we still need it as it's called
+ // on in other clipping functions
+}
+
+void OutputDevice::SetDeviceClipRegion( const vcl::Region* pRegion )
+{
+ DBG_TESTSOLARMUTEX();
+
+ if ( !pRegion )
+ {
+ if ( mbClipRegion )
+ {
+ maRegion = vcl::Region(true);
+ mbClipRegion = false;
+ mbInitClipRegion = true;
+ }
+ }
+ else
+ {
+ maRegion = *pRegion;
+ mbClipRegion = true;
+ mbInitClipRegion = true;
+ }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */