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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:06:44 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:06:44 +0000
commited5640d8b587fbcfed7dd7967f3de04b37a76f26 (patch)
tree7a5f7c6c9d02226d7471cb3cc8fbbf631b415303 /include/vcl/region.hxx
parentInitial commit. (diff)
downloadlibreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.tar.xz
libreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.zip
Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'include/vcl/region.hxx')
-rw-r--r--include/vcl/region.hxx167
1 files changed, 167 insertions, 0 deletions
diff --git a/include/vcl/region.hxx b/include/vcl/region.hxx
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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 .
+ */
+
+#ifndef INCLUDED_VCL_REGION_HXX
+#define INCLUDED_VCL_REGION_HXX
+
+#include <tools/gen.hxx>
+#include <tools/poly.hxx>
+#include <vcl/dllapi.h>
+#include <basegfx/polygon/b2dpolypolygon.hxx>
+#include <memory>
+#include <optional>
+
+class RegionBand;
+
+namespace vcl { class Window; }
+class OutputDevice;
+class Bitmap;
+
+typedef std::vector< tools::Rectangle > RectangleVector;
+
+namespace vcl {
+
+class SAL_WARN_UNUSED VCL_DLLPUBLIC Region
+{
+private:
+ friend class ::OutputDevice;
+ friend class ::vcl::Window;
+ friend class ::Bitmap;
+
+ // possible contents
+ std::optional< basegfx::B2DPolyPolygon >
+ mpB2DPolyPolygon;
+ std::optional< tools::PolyPolygon >
+ mpPolyPolygon;
+ std::shared_ptr< RegionBand >
+ mpRegionBand;
+
+ bool mbIsNull : 1;
+
+ // helpers
+ SAL_DLLPRIVATE void ImplCreatePolyPolyRegion( const tools::PolyPolygon& rPolyPoly );
+ SAL_DLLPRIVATE void ImplCreatePolyPolyRegion( const basegfx::B2DPolyPolygon& rPolyPoly );
+
+ SAL_DLLPRIVATE tools::PolyPolygon ImplCreatePolyPolygonFromRegionBand() const;
+ SAL_DLLPRIVATE basegfx::B2DPolyPolygon ImplCreateB2DPolyPolygonFromRegionBand() const;
+
+public:
+
+ explicit Region(bool bIsNull = false); // default creates empty region, with true a null region is created
+ explicit Region(const tools::Rectangle& rRect);
+ explicit Region(const tools::Polygon& rPolygon);
+ explicit Region(const tools::PolyPolygon& rPolyPoly);
+ explicit Region(const basegfx::B2DPolyPolygon&);
+ Region(const vcl::Region& rRegion);
+ Region(vcl::Region&& rRegion) noexcept;
+ ~Region();
+
+ // direct access to contents
+ const std::optional<basegfx::B2DPolyPolygon>& getB2DPolyPolygon() const { return mpB2DPolyPolygon; }
+ const std::optional<tools::PolyPolygon>& getPolyPolygon() const { return mpPolyPolygon; }
+ const RegionBand* getRegionBand() const { return mpRegionBand.get(); }
+
+ // access with converters, the asked data will be created from the most
+ // valuable data, buffered and returned
+ tools::PolyPolygon GetAsPolyPolygon() const;
+ basegfx::B2DPolyPolygon GetAsB2DPolyPolygon() const;
+ const RegionBand* GetAsRegionBand() const;
+
+ // manipulators
+ void Move( tools::Long nHorzMove, tools::Long nVertMove );
+ void Scale( double fScaleX, double fScaleY );
+ void Union( const tools::Rectangle& rRegion );
+ void Intersect( const tools::Rectangle& rRegion );
+ void Exclude( const tools::Rectangle& rRegion );
+ void XOr( const tools::Rectangle& rRegion );
+ void Union( const vcl::Region& rRegion );
+ void Intersect( const vcl::Region& rRegion );
+ void Exclude( const vcl::Region& rRegion );
+ bool XOr( const vcl::Region& rRegion );
+
+ bool IsEmpty() const;
+ bool IsNull() const { return mbIsNull;}
+
+ void SetEmpty();
+ void SetNull();
+
+ bool IsRectangle() const;
+
+ tools::Rectangle GetBoundRect() const;
+ bool HasPolyPolygonOrB2DPolyPolygon() const { return (getB2DPolyPolygon() || getPolyPolygon()); }
+ void GetRegionRectangles(RectangleVector& rTarget) const;
+
+ bool Contains( const Point& rPoint ) const;
+ bool Overlaps( const tools::Rectangle& rRect ) const;
+
+ vcl::Region& operator=( const vcl::Region& rRegion );
+ vcl::Region& operator=( vcl::Region&& rRegion ) noexcept;
+ vcl::Region& operator=( const tools::Rectangle& rRect );
+
+ bool operator==( const vcl::Region& rRegion ) const;
+ bool operator!=( const vcl::Region& rRegion ) const { return !(Region::operator==( rRegion )); }
+
+ friend VCL_DLLPUBLIC SvStream& ReadRegion( SvStream& rIStm, vcl::Region& rRegion );
+ friend VCL_DLLPUBLIC SvStream& WriteRegion( SvStream& rOStm, const vcl::Region& rRegion );
+
+ /* workaround: faster conversion for PolyPolygons
+ * if half of the Polygons contained in rPolyPoly are actually
+ * rectangles, then the returned vcl::Region will be constructed by
+ * XOr'ing the contained Polygons together; in the case of
+ * only Rectangles this can be up to eight times faster than
+ * Region( const tools::PolyPolygon& ).
+ * Caution: this is only useful if the vcl::Region is known to be
+ * changed to rectangles; e.g. if being set as clip region
+ */
+ static vcl::Region GetRegionFromPolyPolygon( const tools::PolyPolygon& rPolyPoly );
+};
+
+template< typename charT, typename traits >
+inline std::basic_ostream<charT, traits> & operator <<(
+ std::basic_ostream<charT, traits> & stream, const Region& rRegion)
+{
+ if (rRegion.IsEmpty())
+ return stream << "EMPTY";
+ if (rRegion.getB2DPolyPolygon())
+ return stream << "B2DPolyPolygon("
+ << *rRegion.getB2DPolyPolygon()
+ << ")";
+ if (rRegion.getPolyPolygon())
+ return stream << "PolyPolygon("
+ << *rRegion.getPolyPolygon()
+ << ")";
+ if (rRegion.getRegionBand())
+ { // inlined because RegionBand is private to vcl
+ stream << "RegionBand(";
+ RectangleVector rects;
+ rRegion.GetRegionRectangles(rects);
+ if (rects.empty())
+ stream << "EMPTY";
+ for (size_t i = 0; i < rects.size(); ++i)
+ stream << "[" << i << "] " << rects[i];
+ stream << ")";
+ }
+ return stream;
+}
+
+} /* namespace vcl */
+
+#endif // INCLUDED_VCL_REGION_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */