Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 226 insertions, 0 deletions

diff --git a/drawinglayer/source/tools/emfppath.cxx b/drawinglayer/source/tools/emfppath.cxx
new file mode 100644
index 000000000..4217e3616
--- /dev/null
+++ b/drawinglayer/source/tools/emfppath.cxx
@@ -0,0 +1,226 @@
+/* -*- 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: */