193 lines
5.7 KiB
C++
193 lines
5.7 KiB
C++
/* Copyright (C) 2014-2019 J.F.Dockes
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the
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* Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "autoconfig.h"
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#include <stdio.h>
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#include <string>
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#include <QString>
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#include <QStringList>
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#include <QSettings>
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#include "preview_plaintorich.h"
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#include "plaintorich.h"
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#include "log.h"
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#include "guiutils.h"
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#include "cancelcheck.h"
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using namespace std;
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PlainToRichQtPreview::PlainToRichQtPreview()
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{
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clear();
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}
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void PlainToRichQtPreview::clear()
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{
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m_curanchor = 1;
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m_lastanchor = 0;
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m_groupanchors.clear();
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m_groupcuranchors.clear();
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QSettings settings;
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m_spacehack = settings.value("anchorSpcHack", 0).toBool();
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}
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bool PlainToRichQtPreview::haveAnchors()
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{
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return m_lastanchor != 0;
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}
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string PlainToRichQtPreview::PlainToRichQtPreview::header()
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{
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if (m_inputhtml) {
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return cstr_null;
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}
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switch (prefs.previewPlainPre) {
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case PrefsPack::PP_BR:
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m_eolbr = true;
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return "<qt><head><title></title></head><body>";
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case PrefsPack::PP_PRE:
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m_eolbr = false;
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return "<qt><head><title></title></head><body><pre>";
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case PrefsPack::PP_PREWRAP:
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default:
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m_eolbr = false;
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return "<qt><head><title></title></head><body>"
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"<pre style=\"white-space: pre-wrap\">";
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}
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}
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string PlainToRichQtPreview::startMatch(unsigned int grpidx)
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{
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LOGDEB2("startMatch, grpidx " << grpidx << "\n");
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grpidx = m_hdata->index_term_groups[grpidx].grpsugidx;
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LOGDEB2("startMatch, ugrpidx " << grpidx << "\n");
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m_groupanchors[grpidx].push_back(++m_lastanchor);
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m_groupcuranchors[grpidx] = 0;
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// We used to create the region as:
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// <span style="..."><a name="...">term</a></span>
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// For some reason, this caused problems with the display of some
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// Tamil text (qt bug?). Just inserting a space character after
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// the opening <a tag, before the text, clears the problem, reason
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// unknown. We also inverted the <span and <a tags to avoid
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// highlighting the spurious space. The space hack only work in a
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// <pre> section. Also: having <a name=xxx></a> before the match
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// term causes the same problem (so not a possible fix).
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string hackspace = m_spacehack? " " : "";
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string startmarker{
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"<a name='" + termAnchorName(m_lastanchor) + "'>" + hackspace +
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"<span style='" + qs2utf8s(prefs.qtermstyle) + "'>"
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};
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return startmarker;
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}
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string PlainToRichQtPreview::endMatch()
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{
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return "</span></a>";
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}
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string PlainToRichQtPreview::termAnchorName(int i) const
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{
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static const char *termAnchorNameBase = "TRM";
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char acname[sizeof(termAnchorNameBase) + 20];
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sprintf(acname, "%s%d", termAnchorNameBase, i);
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return string(acname);
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}
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string PlainToRichQtPreview::startChunk()
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{
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return "<pre>";
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}
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int PlainToRichQtPreview::nextAnchorNum(int grpidx)
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{
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LOGDEB2("nextAnchorNum: group " << grpidx << "\n");
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auto curit = m_groupcuranchors.find(grpidx);
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auto vecit = m_groupanchors.find(grpidx);
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if (grpidx == -1 || curit == m_groupcuranchors.end() ||
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vecit == m_groupanchors.end()) {
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if (m_curanchor >= m_lastanchor)
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m_curanchor = 1;
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else
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m_curanchor++;
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} else {
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if (curit->second >= vecit->second.size() -1)
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m_groupcuranchors[grpidx] = 0;
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else
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m_groupcuranchors[grpidx]++;
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m_curanchor = vecit->second[m_groupcuranchors[grpidx]];
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LOGDEB2("nextAnchorNum: curanchor now " << m_curanchor << "\n");
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}
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return m_curanchor;
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}
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int PlainToRichQtPreview::prevAnchorNum(int grpidx)
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{
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auto curit = m_groupcuranchors.find(grpidx);
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auto vecit = m_groupanchors.find(grpidx);
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if (grpidx == -1 || curit == m_groupcuranchors.end() ||
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vecit == m_groupanchors.end()) {
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if (m_curanchor <= 1)
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m_curanchor = m_lastanchor;
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else
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m_curanchor--;
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} else {
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if (curit->second <= 0)
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m_groupcuranchors[grpidx] = vecit->second.size() -1;
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else
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m_groupcuranchors[grpidx]--;
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m_curanchor = vecit->second[m_groupcuranchors[grpidx]];
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}
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return m_curanchor;
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}
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QString PlainToRichQtPreview::curAnchorName() const
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{
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return u8s2qs(termAnchorName(m_curanchor));
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}
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ToRichThread::ToRichThread(const string &i, const HighlightData& hd,
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std::shared_ptr<PlainToRichQtPreview> ptr,
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QStringList& qrichlist,
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QObject *parent)
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: QThread(parent), m_input(i), m_hdata(hd), m_ptr(ptr), m_output(qrichlist)
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{
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}
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// Insert into editor by chunks so that the top becomes visible
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// earlier for big texts. This provokes some artifacts (adds empty line),
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// so we can't set it too low.
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#define CHUNKL 500*1000
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void ToRichThread::run()
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{
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list<string> out;
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try {
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m_ptr->plaintorich(m_input, out, m_hdata, CHUNKL);
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} catch (CancelExcept) {
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return;
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}
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// Convert C++ string list to QString list
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for (const auto& chunk : out) {
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m_output.push_back(u8s2qs(chunk));
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}
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}
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