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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 <svx/sdr/overlay/overlayselection.hxx>
+#include <basegfx/polygon/b2dpolygontools.hxx>
+#include <basegfx/polygon/b2dpolygon.hxx>
+#include <drawinglayer/primitive2d/PolyPolygonColorPrimitive2D.hxx>
+#include <drawinglayer/primitive2d/PolyPolygonHairlinePrimitive2D.hxx>
+#include <svtools/optionsdrawinglayer.hxx>
+#include <vcl/svapp.hxx>
+#include <vcl/outdev.hxx>
+#include <vcl/settings.hxx>
+#include <drawinglayer/primitive2d/invertprimitive2d.hxx>
+#include <drawinglayer/primitive2d/unifiedtransparenceprimitive2d.hxx>
+#include <basegfx/polygon/b2dpolypolygoncutter.hxx>
+#include <svx/sdr/overlay/overlaymanager.hxx>
+
+
+namespace sdr::overlay
+{
+ // combine rages geometrically to a single, ORed polygon
+ static basegfx::B2DPolyPolygon impCombineRangesToPolyPolygon(const std::vector< basegfx::B2DRange >& rRanges)
+ {
+ const sal_uInt32 nCount(rRanges.size());
+ basegfx::B2DPolyPolygon aRetval;
+
+ for(sal_uInt32 a(0); a < nCount; a++)
+ {
+ const basegfx::B2DPolygon aDiscretePolygon(basegfx::utils::createPolygonFromRect(rRanges[a]));
+
+ if(0 == a)
+ {
+ aRetval.append(aDiscretePolygon);
+ }
+ else
+ {
+ aRetval = basegfx::utils::solvePolygonOperationOr(aRetval, basegfx::B2DPolyPolygon(aDiscretePolygon));
+ }
+ }
+
+ return aRetval;
+ }
+
+ // check if wanted type OverlayType::Transparent or OverlayType::Solid
+ // is possible. If not, fallback to invert mode (classic mode)
+ static OverlayType impCheckPossibleOverlayType(OverlayType aOverlayType)
+ {
+ if(OverlayType::Invert != aOverlayType)
+ {
+ if(!SvtOptionsDrawinglayer::IsTransparentSelection())
+ {
+ // not possible when switched off by user
+ return OverlayType::Invert;
+ }
+ else if (const OutputDevice* pOut = Application::GetDefaultDevice())
+ {
+
+ if(pOut->GetSettings().GetStyleSettings().GetHighContrastMode())
+ {
+ // not possible when in high contrast mode
+ return OverlayType::Invert;
+ }
+
+ if(!pOut->SupportsOperation(OutDevSupportType::TransparentRect))
+ {
+ // not possible when no fast transparence paint is supported on the system
+ return OverlayType::Invert;
+ }
+ }
+ }
+
+ return aOverlayType;
+ }
+
+ drawinglayer::primitive2d::Primitive2DContainer OverlaySelection::createOverlayObjectPrimitive2DSequence()
+ {
+ drawinglayer::primitive2d::Primitive2DContainer aRetval;
+ const sal_uInt32 nCount(getRanges().size());
+
+ if(nCount)
+ {
+ // create range primitives
+ const bool bInvert(OverlayType::Invert == maLastOverlayType);
+ basegfx::BColor aRGBColor(getBaseColor().getBColor());
+ aRetval.resize(nCount);
+
+ if(bInvert)
+ {
+ // force color to white for invert to get a full invert
+ aRGBColor = basegfx::BColor(1.0, 1.0, 1.0);
+ }
+
+ for(sal_uInt32 a(0);a < nCount; a++)
+ {
+ const basegfx::B2DPolygon aPolygon(basegfx::utils::createPolygonFromRect(maRanges[a]));
+ aRetval[a] = drawinglayer::primitive2d::Primitive2DReference(
+ new drawinglayer::primitive2d::PolyPolygonColorPrimitive2D(
+ basegfx::B2DPolyPolygon(aPolygon),
+ aRGBColor));
+ }
+
+ if(bInvert)
+ {
+ // embed all in invert primitive
+ drawinglayer::primitive2d::Primitive2DReference aInvert(
+ new drawinglayer::primitive2d::InvertPrimitive2D(
+ std::move(aRetval)));
+ aRetval = drawinglayer::primitive2d::Primitive2DContainer { aInvert };
+ }
+ else if(OverlayType::Transparent == maLastOverlayType)
+ {
+ // embed all rectangles in transparent paint
+ const double fTransparence(mnLastTransparence / 100.0);
+ const drawinglayer::primitive2d::Primitive2DReference aUnifiedTransparence(
+ new drawinglayer::primitive2d::UnifiedTransparencePrimitive2D(
+ std::move(aRetval),
+ fTransparence));
+
+ if(mbBorder)
+ {
+ const basegfx::B2DPolyPolygon aPolyPolygon(impCombineRangesToPolyPolygon(getRanges()));
+ const drawinglayer::primitive2d::Primitive2DReference aSelectionOutline(
+ new drawinglayer::primitive2d::PolyPolygonHairlinePrimitive2D(
+ aPolyPolygon,
+ aRGBColor));
+
+ // add both to result
+ aRetval = drawinglayer::primitive2d::Primitive2DContainer { aUnifiedTransparence, aSelectionOutline };
+ }
+ else
+ {
+ // just add transparent part
+ aRetval = drawinglayer::primitive2d::Primitive2DContainer { aUnifiedTransparence };
+ }
+ }
+ }
+
+ return aRetval;
+ }
+
+ OverlaySelection::OverlaySelection(
+ OverlayType eType,
+ const Color& rColor,
+ std::vector< basegfx::B2DRange >&& rRanges,
+ bool bBorder)
+ : OverlayObject(rColor),
+ meOverlayType(eType),
+ maRanges(std::move(rRanges)),
+ maLastOverlayType(eType),
+ mnLastTransparence(0),
+ mbBorder(bBorder)
+ {
+ // no AA for selection overlays
+ allowAntiAliase(false);
+ }
+
+ OverlaySelection::~OverlaySelection()
+ {
+ if(getOverlayManager())
+ {
+ getOverlayManager()->remove(*this);
+ }
+ }
+
+ drawinglayer::primitive2d::Primitive2DContainer OverlaySelection::getOverlayObjectPrimitive2DSequence() const
+ {
+ // get current values
+ const OverlayType aNewOverlayType(impCheckPossibleOverlayType(meOverlayType));
+ const sal_uInt16 nNewTransparence(SvtOptionsDrawinglayer::GetTransparentSelectionPercent());
+
+ if(!getPrimitive2DSequence().empty())
+ {
+ if(aNewOverlayType != maLastOverlayType
+ || nNewTransparence != mnLastTransparence)
+ {
+ // conditions of last local decomposition have changed, delete
+ const_cast< OverlaySelection* >(this)->resetPrimitive2DSequence();
+ }
+ }
+
+ if(getPrimitive2DSequence().empty())
+ {
+ // remember new values
+ const_cast< OverlaySelection* >(this)->maLastOverlayType = aNewOverlayType;
+ const_cast< OverlaySelection* >(this)->mnLastTransparence = nNewTransparence;
+ }
+
+ // call base implementation
+ return OverlayObject::getOverlayObjectPrimitive2DSequence();
+ }
+
+ void OverlaySelection::setRanges(std::vector< basegfx::B2DRange >&& rNew)
+ {
+ if(rNew != maRanges)
+ {
+ maRanges = std::move(rNew);
+ objectChange();
+ }
+ }
+} // end of namespace
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */