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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* libvisio
* Version: MPL 1.1 / GPLv2+ / LGPLv2+
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License or as specified alternatively below. You may obtain a copy of
* the License at http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* Major Contributor(s):
* Copyright (C) 2011 Fridrich Strba <fridrich.strba@bluewin.ch>
* Copyright (C) 2011 Eilidh McAdam <tibbylickle@gmail.com>
*
*
* All Rights Reserved.
*
* For minor contributions see the git repository.
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPLv2+"), or
* the GNU Lesser General Public License Version 2 or later (the "LGPLv2+"),
* in which case the provisions of the GPLv2+ or the LGPLv2+ are applicable
* instead of those above.
*/
#include <libwpd-stream/libwpd-stream.h>
#include <locale.h>
#include <sstream>
#include <string>
#include "libvisio_utils.h"
#include "VSD11Parser.h"
#include "VSDInternalStream.h"
#include "VSDXDocumentStructure.h"
#include "VSDXContentCollector.h"
#include "VSDXStylesCollector.h"
libvisio::VSD11Parser::VSD11Parser(WPXInputStream *input, libwpg::WPGPaintInterface *painter)
: VSDXParser(input, painter)
{}
libvisio::VSD11Parser::~VSD11Parser()
{}
bool libvisio::VSD11Parser::getChunkHeader(WPXInputStream *input)
{
unsigned char tmpChar = 0;
while (!input->atEOS() && !tmpChar)
tmpChar = readU8(input);
if (input->atEOS())
return false;
else
input->seek(-1, WPX_SEEK_CUR);
m_header.chunkType = readU32(input);
m_header.id = readU32(input);
m_header.list = readU32(input);
// Certain chunk types seem to always have a trailer
m_header.trailer = 0;
if (m_header.list != 0 || m_header.chunkType == 0x71 || m_header.chunkType == 0x70 ||
m_header.chunkType == 0x6b || m_header.chunkType == 0x6a || m_header.chunkType == 0x69 ||
m_header.chunkType == 0x66 || m_header.chunkType == 0x65 || m_header.chunkType == 0x2c)
m_header.trailer += 8; // 8 byte trailer
m_header.dataLength = readU32(input);
m_header.level = readU16(input);
m_header.unknown = readU8(input);
unsigned trailerChunks [14] = {0x64, 0x65, 0x66, 0x69, 0x6a, 0x6b, 0x6f, 0x71,
0x92, 0xa9, 0xb4, 0xb6, 0xb9, 0xc7
};
// Add word separator under certain circumstances for v11
// Below are known conditions, may be more or a simpler pattern
if (m_header.list != 0 || (m_header.level == 2 && m_header.unknown == 0x55) ||
(m_header.level == 2 && m_header.unknown == 0x54 && m_header.chunkType == 0xaa)
|| (m_header.level == 3 && m_header.unknown != 0x50 && m_header.unknown != 0x54))
{
m_header.trailer += 4;
}
for (unsigned i = 0; i < 14; i++)
{
if (m_header.chunkType == trailerChunks[i] && m_header.trailer != 12 && m_header.trailer != 4)
{
m_header.trailer += 4;
break;
}
}
// Some chunks never have a trailer
if (m_header.chunkType == 0x1f || m_header.chunkType == 0xc9 ||
m_header.chunkType == 0x2d || m_header.chunkType == 0xd1)
{
m_header.trailer = 0;
}
return true;
}
void libvisio::VSD11Parser::readText(WPXInputStream *input)
{
input->seek(8, WPX_SEEK_CUR);
std::vector<uint8_t> textStream;
// Read up to end of chunk in byte pairs (except from last 2 bytes)
for (unsigned bytesRead = 8; bytesRead < m_header.dataLength; bytesRead++)
textStream.push_back(readU8(input));
m_collector->collectText(m_header.id, m_header.level, textStream, libvisio::VSD_TEXT_UTF16);
}
void libvisio::VSD11Parser::readCharIX(WPXInputStream *input)
{
WPXString fontFace("Arial");
unsigned charCount = readU32(input);
unsigned short fontID = readU16(input);
input->seek(1, WPX_SEEK_CUR); // Color ID
Colour fontColour; // Font Colour
fontColour.r = readU8(input);
fontColour.g = readU8(input);
fontColour.b = readU8(input);
fontColour.a = readU8(input);
bool bold(false);
bool italic(false);
bool underline(false);
bool doubleunderline(false);
bool strikeout(false);
bool doublestrikeout(false);
bool allcaps(false);
bool initcaps(false);
bool smallcaps(false);
bool superscript(false);
bool subscript(false);
unsigned char fontMod = readU8(input);
if (fontMod & 1) bold = true;
if (fontMod & 2) italic = true;
if (fontMod & 4) underline = true;
if (fontMod & 8) smallcaps = true;
fontMod = readU8(input);
if (fontMod & 1) allcaps = true;
if (fontMod & 2) initcaps = true;
fontMod = readU8(input);
if (fontMod & 1) superscript = true;
if (fontMod & 2) subscript = true;
input->seek(4, WPX_SEEK_CUR);
double fontSize = readDouble(input);
fontMod = readU8(input);
if (fontMod & 1) doubleunderline = true;
if (fontMod & 4) strikeout = true;
if (fontMod & 0x20) doublestrikeout = true;
input->seek(42, WPX_SEEK_CUR);
unsigned langId = readU32(input);
if (m_isInStyles)
m_collector->collectCharIXStyle(m_header.id, m_header.level, charCount, fontID, fontColour, langId, fontSize,
bold, italic, underline, doubleunderline, strikeout, doublestrikeout,
allcaps, initcaps, smallcaps, superscript, subscript, fontFace);
else
m_charList->addCharIX(m_header.id, m_header.level, charCount, fontID, fontColour, langId, fontSize,
bold, italic, underline, doubleunderline, strikeout, doublestrikeout,
allcaps, initcaps, smallcaps, superscript, subscript, fontFace);
}
void libvisio::VSD11Parser::readFillAndShadow(WPXInputStream *input)
{
unsigned char colourIndexFG = readU8(input);
input->seek(3, WPX_SEEK_CUR);
unsigned char fillFGTransparency = readU8(input);
unsigned char colourIndexBG = readU8(input);
input->seek(3, WPX_SEEK_CUR);
unsigned char fillBGTransparency = readU8(input);
unsigned char fillPattern = readU8(input);
input->seek(1, WPX_SEEK_CUR);
Colour shfgc; // Shadow Foreground Colour
shfgc.r = readU8(input);
shfgc.g = readU8(input);
shfgc.b = readU8(input);
shfgc.a = readU8(input);
input->seek(5, WPX_SEEK_CUR); // Shadow Background Colour skipped
unsigned char shadowPattern = readU8(input);
// only version 11 after that point
input->seek(2, WPX_SEEK_CUR); // Shadow Type and Value format byte
double shadowOffsetX = readDouble(input);
input->seek(1, WPX_SEEK_CUR); // Value format byte
double shadowOffsetY = -readDouble(input);
if (m_isInStyles)
m_collector->collectFillStyle(m_header.id, m_header.level, colourIndexFG, colourIndexBG, fillPattern,
fillFGTransparency, fillBGTransparency, shadowPattern, shfgc,
shadowOffsetX, shadowOffsetY);
else if (m_isStencilStarted)
{
VSD_DEBUG_MSG(("Found stencil fill\n"));
if (!m_stencilShape.m_fillStyle)
m_stencilShape.m_fillStyle = new VSDXFillStyle(colourIndexFG, colourIndexBG, fillPattern,
fillFGTransparency, fillBGTransparency, shfgc, shadowPattern,
shadowOffsetX, shadowOffsetY);
}
else
m_collector->collectFillAndShadow(m_header.id, m_header.level, colourIndexFG, colourIndexBG, fillPattern,
fillFGTransparency, fillBGTransparency, shadowPattern, shfgc,
shadowOffsetX, shadowOffsetY);
}
/* vim:set shiftwidth=2 softtabstop=2 expandtab: */
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