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Diffstat (limited to 'vcl/source/outdev/clipping.cxx')
| -rw-r--r-- | vcl/source/outdev/clipping.cxx | 227 |
1 files changed, 227 insertions, 0 deletions
diff --git a/vcl/source/outdev/clipping.cxx b/vcl/source/outdev/clipping.cxx new file mode 100644 index 000000000..0570719a1 --- /dev/null +++ b/vcl/source/outdev/clipping.cxx @@ -0,0 +1,227 @@ +/* -*- 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: */ |