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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 <o3tl/safeint.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_Int32 _nPoints, bool bLines)
{
if (_nPoints<0 || o3tl::make_unsigned(_nPoints)>SAL_MAX_INT32 / (2 * sizeof(float)))
{
_nPoints = SAL_MAX_INT32 / (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 (int 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+\t\t\tEmfPlusPointR [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+\t\t\tEmfPlusPoint [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+\t EMFPlusPointF [x,y]: " << pPoints [i*2] << "," << pPoints [i*2 + 1]);
}
}
if (pPointTypes)
{
for (int i = 0; i < nPoints; i++)
{
s.ReadUChar(pPointTypes[i]);
SAL_INFO("drawinglayer", "EMF+\tpoint type: " << static_cast<int>(pPointTypes[i]));
}
}
aPolygon.clear();
}
::basegfx::B2DPolyPolygon& EMFPPath::GetPolygon (EmfPlusHelperData const & rR, bool bMapIt, bool bAddLineToCloseShape)
{
::basegfx::B2DPolygon polygon;
aPolygon.clear ();
int last_normal = 0, p = 0;
::basegfx::B2DPoint prev, mapped;
bool hasPrev = false;
for (int 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+\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+\t\tPolygon append point: " << pPoints [i*2] << "," << pPoints [i*2 + 1] << " mapped: " << mapped.getX () << ":" << mapped.getY ());
if (hasPrev)
{
polygon.setPrevControlPoint (p, prev);
SAL_INFO ("drawinglayer", "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+\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+\t\tPolygon: " << i);
for (unsigned int j=0; j<polygon.count(); j++) {
::basegfx::B2DPoint point = polygon.getB2DPoint(j);
SAL_INFO ("drawinglayer", "EMF+\t\t\tPoint: " << point.getX() << "," << point.getY());
if (polygon.isPrevControlPointUsed(j)) {
point = polygon.getPrevControlPoint(j);
SAL_INFO ("drawinglayer", "EMF+\t\t\tPrev: " << point.getX() << "," << point.getY());
}
if (polygon.isNextControlPointUsed(j)) {
point = polygon.getNextControlPoint(j);
SAL_INFO ("drawinglayer", "EMF+\t\t\tNext: " << point.getX() << "," << point.getY());
}
}
}
#endif
}
return aPolygon;
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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