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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 <basegfx/point/b2dpoint.hxx>
+#include <basegfx/polygon/b2dpolygon.hxx>
+#include <basegfx/polygon/b2dpolypolygon.hxx>
+#include <sal/log.hxx>
+#include "emfppath.hxx"
+
+namespace
+{
+ const unsigned char nTopBitInt7 = 0x80;
+ const unsigned char nSignBitInt7 = 0x40;
+ // include the sign bit so if it's negative we get
+ // that "missing" bit pre-set to 1
+ const unsigned char nValueMaskInt7 = 0x7F;
+}
+
+namespace emfplushelper
+{
+ // see 2.2.2.21 EmfPlusInteger7
+ // 2.2.2.22 EmfPlusInteger15
+ // and 2.2.2.37 EmfPlusPointR Object
+ static sal_Int16 GetEmfPlusInteger(SvStream& s)
+ {
+ unsigned char u8(0);
+ s.ReadUChar(u8);
+
+ bool bIsEmfPlusInteger15 = u8 & nTopBitInt7;
+ bool bNegative = u8 & nSignBitInt7;
+ unsigned char val1 = u8 & nValueMaskInt7;
+ if (bNegative)
+ val1 |= nTopBitInt7;
+ if (!bIsEmfPlusInteger15)
+ {
+ return static_cast<signed char>(val1);
+ }
+
+ s.ReadUChar(u8);
+ sal_uInt16 nRet = (val1 << 8) | u8;
+ return static_cast<sal_Int16>(nRet);
+ }
+
+ EMFPPath::EMFPPath (sal_uInt32 _nPoints, bool bLines)
+ {
+ if (_nPoints > SAL_MAX_UINT32 / (2 * sizeof(float)))
+ {
+ _nPoints = SAL_MAX_UINT32 / (2 * sizeof(float));
+ }
+
+ nPoints = _nPoints;
+ pPoints.reset( new float [nPoints*2] );
+
+ if (!bLines)
+ pPointTypes.reset( new sal_uInt8 [_nPoints] );
+ }
+
+ EMFPPath::~EMFPPath ()
+ {
+ }
+
+ void EMFPPath::Read (SvStream& s, sal_uInt32 pathFlags)
+ {
+ for (sal_uInt32 i = 0; i < nPoints; i ++)
+ {
+ if (pathFlags & 0x800)
+ {
+ // EMFPlusPointR: points are stored in EMFPlusInteger7 or
+ // EMFPlusInteger15 objects, see section 2.2.2.21/22
+ // If 0x800 bit is set, the 0x4000 bit is undefined and must be ignored
+ sal_Int32 x = GetEmfPlusInteger(s);
+ sal_Int32 y = GetEmfPlusInteger(s);
+ pPoints [i*2] = x;
+ pPoints [i*2 + 1] = y;
+ SAL_INFO("drawinglayer.emf", "EMF+\t\t\t" << i << ". EmfPlusPointR [x,y]: " << x << ", " << y);
+ }
+ else if (pathFlags & 0x4000)
+ {
+ // EMFPlusPoint: stored in signed short 16bit integer format
+ sal_Int16 x, y;
+
+ s.ReadInt16( x ).ReadInt16( y );
+ SAL_INFO ("drawinglayer.emf", "EMF+\t\t\t" << i << ". EmfPlusPoint [x,y]: " << x << ", " << y);
+ pPoints [i*2] = x;
+ pPoints [i*2 + 1] = y;
+ }
+ else
+ {
+ // EMFPlusPointF: stored in Single (float) format
+ s.ReadFloat( pPoints [i*2] ).ReadFloat( pPoints [i*2 + 1] );
+ SAL_INFO("drawinglayer.emf", "EMF+\t" << i << ". EMFPlusPointF [x,y]: " << pPoints [i * 2] << ", " << pPoints [i * 2 + 1]);
+ }
+ }
+
+ if (pPointTypes)
+ {
+ for (sal_uInt32 i = 0; i < nPoints; i++)
+ {
+ s.ReadUChar(pPointTypes[i]);
+ SAL_INFO("drawinglayer.emf", "EMF+\tpoint type: 0x" << std::hex << static_cast<int>(pPointTypes[i]) << std::dec);
+ }
+ }
+
+ aPolygon.clear();
+ }
+
+ ::basegfx::B2DPolyPolygon& EMFPPath::GetPolygon (EmfPlusHelperData const & rR, bool bMapIt, bool bAddLineToCloseShape)
+ {
+ ::basegfx::B2DPolygon polygon;
+ aPolygon.clear ();
+ sal_uInt32 last_normal = 0, p = 0;
+ ::basegfx::B2DPoint prev, mapped;
+ bool hasPrev = false;
+
+ for (sal_uInt32 i = 0; i < nPoints; i ++)
+ {
+ if (p && pPointTypes && (pPointTypes [i] == 0))
+ {
+ aPolygon.append (polygon);
+ last_normal = i;
+ p = 0;
+ polygon.clear ();
+ }
+
+ if (bMapIt)
+ mapped = rR.Map (pPoints [i*2], pPoints [i*2 + 1]);
+ else
+ mapped = ::basegfx::B2DPoint (pPoints [i*2], pPoints [i*2 + 1]);
+
+ if (pPointTypes)
+ {
+ if ((pPointTypes [i] & 0x07) == 3)
+ {
+ if (((i - last_normal )% 3) == 1)
+ {
+ polygon.setNextControlPoint (p - 1, mapped);
+ SAL_INFO ("drawinglayer.emf", "EMF+\t\tPolygon append next: " << p - 1 << " mapped: " << mapped.getX () << "," << mapped.getY ());
+ continue;
+ }
+ else if (((i - last_normal) % 3) == 2)
+ {
+ prev = mapped;
+ hasPrev = true;
+ continue;
+ }
+ }
+ else
+ {
+ last_normal = i;
+ }
+ }
+
+ polygon.append (mapped);
+ SAL_INFO ("drawinglayer.emf", "EMF+\t\tPoint: " << pPoints [i*2] << "," << pPoints [i*2 + 1] << " mapped: " << mapped.getX () << ":" << mapped.getY ());
+
+ if (hasPrev)
+ {
+ polygon.setPrevControlPoint (p, prev);
+ SAL_INFO ("drawinglayer.emf", "EMF+\t\tPolygon append prev: " << p << " mapped: " << prev.getX () << "," << prev.getY ());
+ hasPrev = false;
+ }
+
+ p++;
+
+ if (pPointTypes && (pPointTypes [i] & 0x80)) // closed polygon
+ {
+ polygon.setClosed (true);
+ aPolygon.append (polygon);
+ SAL_INFO ("drawinglayer.emf", "EMF+\t\tClose polygon");
+ last_normal = i + 1;
+ p = 0;
+ polygon.clear ();
+ }
+ }
+
+ // Draw an extra line between the last point and the first point, to close the shape.
+ if (bAddLineToCloseShape)
+ {
+ polygon.setClosed (true);
+ }
+
+ if (polygon.count ())
+ {
+ aPolygon.append (polygon);
+
+#if OSL_DEBUG_LEVEL > 1
+ for (unsigned int i=0; i<aPolygon.count(); i++) {
+ polygon = aPolygon.getB2DPolygon(i);
+ SAL_INFO ("drawinglayer.emf", "EMF+\t\tPolygon: " << i);
+ for (unsigned int j=0; j<polygon.count(); j++) {
+ ::basegfx::B2DPoint point = polygon.getB2DPoint(j);
+ SAL_INFO ("drawinglayer.emf", "EMF+\t\t\tPoint: " << point.getX() << "," << point.getY());
+ if (polygon.isPrevControlPointUsed(j)) {
+ point = polygon.getPrevControlPoint(j);
+ SAL_INFO ("drawinglayer.emf", "EMF+\t\t\tPrev: " << point.getX() << "," << point.getY());
+ }
+ if (polygon.isNextControlPointUsed(j)) {
+ point = polygon.getNextControlPoint(j);
+ SAL_INFO ("drawinglayer.emf", "EMF+\t\t\tNext: " << point.getX() << "," << point.getY());
+ }
+ }
+ }
+#endif
+ }
+
+ return aPolygon;
+ }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */