#ifndef lint
static char rcsid[] = "@(#$Id: preview_w.cpp,v 1.39 2008-10-07 16:19:15 dockes Exp $ (C) 2005 J.F.Dockes";
#endif
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the
* Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <unistd.h>
#include <stdlib.h>
#include <time.h>
#include <sys/stat.h>
#include <list>
#include <utility>
#ifndef NO_NAMESPACES
using std::pair;
#endif /* NO_NAMESPACES */
#include <qmessagebox.h>
#include <qthread.h>
#include <qvariant.h>
#include <qpushbutton.h>
#include <qtabwidget.h>
#include <qprinter.h>
#include <qprintdialog.h>
#include <qscrollbar.h>
#include <qmenu.h>
#include <qtextedit.h>
#include <qprogressdialog.h>
#include <qevent.h>
#include <qlabel.h>
#include <qlineedit.h>
#include <qcheckbox.h>
#include <qlayout.h>
#include <qtooltip.h>
#include <qwhatsthis.h>
#include <qapplication.h>
#include <qclipboard.h>
#include "debuglog.h"
#include "pathut.h"
#include "internfile.h"
#include "recoll.h"
#include "plaintorich.h"
#include "smallut.h"
#include "wipedir.h"
#include "cancelcheck.h"
#include "preview_w.h"
#include "guiutils.h"
#include "docseqhist.h"
#include "rclhelp.h"
#ifndef MIN
#define MIN(A,B) ((A)<(B)?(A):(B))
#endif
// Subclass plainToRich to add <termtag>s and anchors to the preview text
class PlainToRichQtPreview : public PlainToRich {
public:
int lastanchor;
PlainToRichQtPreview()
{
lastanchor = 0;
}
virtual ~PlainToRichQtPreview() {}
virtual string header() {
if (m_inputhtml) {
return snull;
} else {
return string("<qt><head><title></title></head><body><pre>");
}
}
virtual string startMatch()
{
return string("<span style='color: ")
+ string((const char *)(prefs.qtermcolor.toUtf8()))
+ string(";font-weight: bold;")
+ string("'>");
}
virtual string endMatch() {return string("</span>");}
virtual string termAnchorName(int i) {
static const char *termAnchorNameBase = "TRM";
char acname[sizeof(termAnchorNameBase) + 20];
sprintf(acname, "%s%d", termAnchorNameBase, i);
if (i > lastanchor)
lastanchor = i;
return string(acname);
}
virtual string startAnchor(int i) {
return string("<a name=\"") + termAnchorName(i) + "\">";
}
virtual string endAnchor() {
return string("</a>");
}
virtual string startChunk() { return "<pre>";}
};
PreviewTextEdit::PreviewTextEdit(QWidget* parent,const char* name, Preview *pv)
: QTextEdit(parent), m_preview(pv), m_dspflds(false)
{
setContextMenuPolicy(Qt::CustomContextMenu);
setObjectName(name);
connect(this, SIGNAL(customContextMenuRequested(const QPoint&)),
this, SLOT(createPopupMenu(const QPoint&)));
m_plaintorich = new PlainToRichQtPreview();
}
PreviewTextEdit::~PreviewTextEdit()
{
delete m_plaintorich;
}
void Preview::init()
{
setObjectName("Preview");
QVBoxLayout* previewLayout = new QVBoxLayout(this);
pvTab = new QTabWidget(this);
// Create the first tab. Should be possible to use addEditorTab
// but this causes a pb with the sizeing
QWidget *unnamed = new QWidget(pvTab);
QVBoxLayout *unnamedLayout = new QVBoxLayout(unnamed);
PreviewTextEdit *pvEdit = new PreviewTextEdit(unnamed, "pvEdit", this);
pvEdit->setReadOnly(TRUE);
pvEdit->setUndoRedoEnabled(FALSE);
unnamedLayout->addWidget(pvEdit);
pvTab->addTab(unnamed, "");
previewLayout->addWidget(pvTab);
// Create the buttons and entry field
QHBoxLayout *layout3 = new QHBoxLayout(0);
searchLabel = new QLabel(this);
layout3->addWidget(searchLabel);
searchTextLine = new QLineEdit(this);
layout3->addWidget(searchTextLine);
nextButton = new QPushButton(this);
nextButton->setEnabled(TRUE);
layout3->addWidget(nextButton);
prevButton = new QPushButton(this);
prevButton->setEnabled(TRUE);
layout3->addWidget(prevButton);
clearPB = new QPushButton(this);
clearPB->setEnabled(FALSE);
layout3->addWidget(clearPB);
matchCheck = new QCheckBox(this);
layout3->addWidget(matchCheck);
previewLayout->addLayout(layout3);
resize(QSize(640, 480).expandedTo(minimumSizeHint()));
// buddies
searchLabel->setBuddy(searchTextLine);
searchLabel->setText(tr("&Search for:"));
nextButton->setText(tr("&Next"));
prevButton->setText(tr("&Previous"));
clearPB->setText(tr("Clear"));
matchCheck->setText(tr("Match &Case"));
QPushButton * bt = new QPushButton(tr("Close Tab"), this);
pvTab->setCornerWidget(bt);
(void)new HelpClient(this);
HelpClient::installMap((const char *)objectName().toUtf8(),
"RCL.SEARCH.PREVIEW");
// signals and slots connections
connect(searchTextLine, SIGNAL(textChanged(const QString&)),
this, SLOT(searchTextLine_textChanged(const QString&)));
connect(nextButton, SIGNAL(clicked()), this, SLOT(nextPressed()));
connect(prevButton, SIGNAL(clicked()), this, SLOT(prevPressed()));
connect(clearPB, SIGNAL(clicked()), searchTextLine, SLOT(clear()));
connect(pvTab, SIGNAL(currentChanged(QWidget *)),
this, SLOT(currentChanged(QWidget *)));
connect(bt, SIGNAL(clicked()), this, SLOT(closeCurrentTab()));
m_dynSearchActive = false;
m_canBeep = true;
m_currentW = 0;
if (prefs.pvwidth > 100) {
resize(prefs.pvwidth, prefs.pvheight);
}
m_loading = false;
currentChanged(pvTab->currentWidget());
m_justCreated = true;
m_haveAnchors = false;
m_curAnchor = 1;
}
void Preview::closeEvent(QCloseEvent *e)
{
LOGDEB(("Preview::closeEvent. m_loading %d\n", m_loading));
if (m_loading) {
CancelCheck::instance().setCancel();
e->ignore();
return;
}
prefs.pvwidth = width();
prefs.pvheight = height();
emit previewExposed(this, m_searchId, -1);
emit previewClosed(this);
QWidget::closeEvent(e);
}
extern const char *eventTypeToStr(int tp);
bool Preview::eventFilter(QObject *target, QEvent *event)
{
if (event->type() != QEvent::KeyPress) {
#if 0
LOGDEB(("Preview::eventFilter(): %s\n", eventTypeToStr(event->type())));
if (event->type() == QEvent::MouseButtonRelease) {
QMouseEvent *mev = (QMouseEvent *)event;
LOGDEB(("Mouse: GlobalY %d y %d\n", mev->globalY(),
mev->y()));
}
#endif
return false;
}
LOGDEB2(("Preview::eventFilter: keyEvent\n"));
PreviewTextEdit *edit = currentEditor();
QKeyEvent *keyEvent = (QKeyEvent *)event;
if (keyEvent->key() == Qt::Key_Escape) {
close();
return true;
} else if (keyEvent->key() == Qt::Key_Down &&
(keyEvent->modifiers() & Qt::ShiftModifier)) {
LOGDEB2(("Preview::eventFilter: got Shift-Up\n"));
if (edit)
emit(showNext(this, m_searchId, edit->m_data.docnum));
return true;
} else if (keyEvent->key() == Qt::Key_Up &&
(keyEvent->modifiers() & Qt::ShiftModifier)) {
LOGDEB2(("Preview::eventFilter: got Shift-Down\n"));
if (edit)
emit(showPrev(this, m_searchId, edit->m_data.docnum));
return true;
} else if (keyEvent->key() == Qt::Key_W &&
(keyEvent->modifiers() & Qt::ControlModifier)) {
LOGDEB2(("Preview::eventFilter: got ^W\n"));
closeCurrentTab();
return true;
} else if (keyEvent->key() == Qt::Key_P &&
(keyEvent->modifiers() & Qt::ControlModifier)) {
LOGDEB2(("Preview::eventFilter: got ^P\n"));
emit(printCurrentPreviewRequest());
return true;
} else if (m_dynSearchActive) {
if (keyEvent->key() == Qt::Key_F3) {
LOGDEB2(("Preview::eventFilter: got F3\n"));
doSearch(searchTextLine->text(), true, false);
return true;
}
if (target != searchTextLine)
return QApplication::sendEvent(searchTextLine, event);
} else {
if (edit &&
(target == edit || target == edit->viewport())) {
if (keyEvent->key() == Qt::Key_Slash) {
LOGDEB2(("Preview::eventFilter: got /\n"));
searchTextLine->setFocus();
m_dynSearchActive = true;
return true;
} else if (keyEvent->key() == Qt::Key_Space) {
LOGDEB2(("Preview::eventFilter: got Space\n"));
int value = edit->verticalScrollBar()->value();
value += edit->verticalScrollBar()->pageStep();
edit->verticalScrollBar()->setValue(value);
return true;
} else if (keyEvent->key() == Qt::Key_Backspace) {
LOGDEB2(("Preview::eventFilter: got Backspace\n"));
int value = edit->verticalScrollBar()->value();
value -= edit->verticalScrollBar()->pageStep();
edit->verticalScrollBar()->setValue(value);
return true;
}
}
}
return false;
}
void Preview::searchTextLine_textChanged(const QString & text)
{
LOGDEB2(("search line text changed. text: '%s'\n", text.ascii()));
if (text.isEmpty()) {
m_dynSearchActive = false;
// nextButton->setEnabled(false);
// prevButton->setEnabled(false);
clearPB->setEnabled(false);
} else {
m_dynSearchActive = true;
// nextButton->setEnabled(true);
// prevButton->setEnabled(true);
clearPB->setEnabled(true);
doSearch(text, false, false);
}
}
PreviewTextEdit *Preview::currentEditor()
{
LOGDEB2(("Preview::currentEditor()\n"));
QWidget *tw = pvTab->currentWidget();
PreviewTextEdit *edit = 0;
if (tw) {
edit = tw->findChild<PreviewTextEdit*>("pvEdit");
}
return edit;
}
// Perform text search. If next is true, we look for the next match of the
// current search, trying to advance and possibly wrapping around. If next is
// false, the search string has been modified, we search for the new string,
// starting from the current position
void Preview::doSearch(const QString &_text, bool next, bool reverse,
bool wordOnly)
{
LOGDEB(("Preview::doSearch: text [%s] txtlen %d next %d rev %d word %d\n",
(const char *)_text.toUtf8(), _text.length(), int(next),
int(reverse), int(wordOnly)));
QString text = _text;
bool matchCase = matchCheck->isChecked();
PreviewTextEdit *edit = currentEditor();
if (edit == 0) {
// ??
return;
}
if (text.isEmpty()) {
if (m_haveAnchors == false) {
LOGDEB(("NO ANCHORS\n"));
return;
}
if (reverse) {
if (m_curAnchor == 1)
m_curAnchor = edit->m_plaintorich->lastanchor;
else
m_curAnchor--;
} else {
if (m_curAnchor == edit->m_plaintorich->lastanchor)
m_curAnchor = 1;
else
m_curAnchor++;
}
LOGDEB(("m_curAnchor: %d\n", m_curAnchor));
QString aname =
QString::fromUtf8(edit->m_plaintorich->termAnchorName(m_curAnchor).c_str());
LOGDEB(("Calling scrollToAnchor(%s)\n", (const char *)aname.toUtf8()));
edit->scrollToAnchor(aname);
// Position the cursor approximately at the anchor (top of
// viewport) so that searches start from here
QTextCursor cursor = edit->cursorForPosition(QPoint(0, 0));
edit->setTextCursor(cursor);
return;
}
// If next is false, the user added characters to the current
// search string. We need to reset the cursor position to the
// start of the previous match, else incremental search is going
// to look for the next occurrence instead of trying to lenghten
// the current match
if (!next) {
QTextCursor cursor = edit->textCursor();
cursor.setPosition(cursor.anchor(), QTextCursor::KeepAnchor);
edit->setTextCursor(cursor);
}
Chrono chron;
LOGDEB(("Preview::doSearch: first find call\n"));
QTextDocument::FindFlags flags = 0;
if (reverse)
flags |= QTextDocument::FindBackward;
if (wordOnly)
flags |= QTextDocument::FindWholeWords;
if (matchCase)
flags |= QTextDocument::FindCaseSensitively;
bool found = edit->find(text, flags);
LOGDEB(("Preview::doSearch: first find call return: found %d %.2f S\n",
found, chron.secs()));
// If not found, try to wrap around.
if (!found) {
LOGDEB(("Preview::doSearch: wrapping around\n"));
if (reverse) {
edit->moveCursor (QTextCursor::End);
} else {
edit->moveCursor (QTextCursor::Start);
}
LOGDEB(("Preview::doSearch: 2nd find call\n"));
chron.restart();
found = edit->find(text, flags);
LOGDEB(("Preview::doSearch: 2nd find call return found %d %.2f S\n",
found, chron.secs()));
}
if (found) {
m_canBeep = true;
} else {
if (m_canBeep)
QApplication::beep();
m_canBeep = false;
}
LOGDEB(("Preview::doSearch: return\n"));
}
void Preview::nextPressed()
{
LOGDEB2(("PreviewTextEdit::nextPressed\n"));
doSearch(searchTextLine->text(), true, false);
}
void Preview::prevPressed()
{
LOGDEB2(("PreviewTextEdit::prevPressed\n"));
doSearch(searchTextLine->text(), true, true);
}
// Called when user clicks on tab
void Preview::currentChanged(QWidget * tw)
{
LOGDEB2(("PreviewTextEdit::currentChanged\n"));
PreviewTextEdit *edit =
tw->findChild<PreviewTextEdit*>("pvEdit");
m_currentW = tw;
LOGDEB1(("Preview::currentChanged(). Editor: %p\n", edit));
if (edit == 0) {
LOGERR(("Editor child not found\n"));
return;
}
edit->setFocus();
// Disconnect the print signal and reconnect it to the current editor
LOGDEB(("Disconnecting reconnecting print signal\n"));
disconnect(this, SIGNAL(printCurrentPreviewRequest()), 0, 0);
connect(this, SIGNAL(printCurrentPreviewRequest()), edit, SLOT(print()));
edit->installEventFilter(this);
edit->viewport()->installEventFilter(this);
searchTextLine->installEventFilter(this);
emit(previewExposed(this, m_searchId, edit->m_data.docnum));
}
void Preview::closeCurrentTab()
{
LOGDEB1(("Preview::closeCurrentTab: m_loading %d\n", m_loading));
if (m_loading) {
CancelCheck::instance().setCancel();
return;
}
if (pvTab->count() > 1) {
pvTab->removeTab(pvTab->currentIndex());
} else {
close();
}
}
PreviewTextEdit *Preview::addEditorTab()
{
LOGDEB1(("PreviewTextEdit::addEditorTab()\n"));
QWidget *anon = new QWidget((QWidget *)pvTab);
QVBoxLayout *anonLayout = new QVBoxLayout(anon);
PreviewTextEdit *editor = new PreviewTextEdit(anon, "pvEdit", this);
editor->setReadOnly(TRUE);
editor->setUndoRedoEnabled(FALSE );
anonLayout->addWidget(editor);
pvTab->addTab(anon, "Tab");
pvTab->setCurrentIndex(pvTab->count() -1);
return editor;
}
void Preview::setCurTabProps(const Rcl::Doc &doc, int docnum)
{
LOGDEB1(("PreviewTextEdit::setCurTabProps\n"));
QString title;
map<string,string>::const_iterator meta_it;
if ((meta_it = doc.meta.find(Rcl::Doc::keytt)) != doc.meta.end()
&& !meta_it->second.empty()) {
title = QString::fromUtf8(meta_it->second.c_str(),
meta_it->second.length());
} else {
title = QString::fromLocal8Bit(path_getsimple(doc.url).c_str());
}
if (title.length() > 20) {
title = title.left(10) + "..." + title.right(10);
}
int curidx = pvTab->currentIndex();
pvTab->setTabText(curidx, title);
char datebuf[100];
datebuf[0] = 0;
if (!doc.fmtime.empty() || !doc.dmtime.empty()) {
time_t mtime = doc.dmtime.empty() ?
atol(doc.fmtime.c_str()) : atol(doc.dmtime.c_str());
struct tm *tm = localtime(&mtime);
strftime(datebuf, 99, "%Y-%m-%d %H:%M:%S", tm);
}
LOGDEB(("Doc.url: [%s]\n", doc.url.c_str()));
string url;
printableUrl(rclconfig->getDefCharset(), doc.url, url);
string tiptxt = url + string("\n");
tiptxt += doc.mimetype + " " + string(datebuf) + "\n";
if (meta_it != doc.meta.end() && !meta_it->second.empty())
tiptxt += meta_it->second + "\n";
pvTab->setTabToolTip(curidx,
QString::fromUtf8(tiptxt.c_str(), tiptxt.length()));
PreviewTextEdit *e = currentEditor();
if (e) {
e->m_data.url = doc.url;
e->m_data.ipath = doc.ipath;
e->m_data.docnum = docnum;
}
}
bool Preview::makeDocCurrent(const Rcl::Doc& doc, int docnum, bool sametab)
{
LOGDEB(("Preview::makeDocCurrent: %s\n", doc.url.c_str()));
/* Check if we already have this page */
for (int i = 0; i < pvTab->count(); i++) {
QWidget *tw = pvTab->widget(i);
if (tw) {
PreviewTextEdit *edit =
tw->findChild<PreviewTextEdit*>("pvEdit");
if (edit && !edit->m_data.url.compare(doc.url) &&
!edit->m_data.ipath.compare(doc.ipath)) {
pvTab->setCurrentIndex(i);
return true;
}
}
}
// if just created the first tab was created during init
if (!sametab && !m_justCreated && !addEditorTab()) {
return false;
}
m_justCreated = false;
if (!loadDocInCurrentTab(doc, docnum)) {
closeCurrentTab();
return false;
}
raise();
return true;
}
void Preview::emitWordSelect(QString word)
{
emit(wordSelect(word));
}
/*
Code for loading a file into an editor window. The operations that
we call have no provision to indicate progression, and it would be
complicated or impossible to modify them to do so (Ie: for external
format converters).
We implement a complicated and ugly mechanism based on threads to indicate
to the user that the app is doing things: lengthy operations are done in
threads and we update a progress indicator while they proceed (but we have
no estimate of their total duration).
An auxiliary thread object is used for short waits. Another option would be
to use signals/slots and return to the event-loop instead, but this would
be even more complicated, and we probably don't want the user to click on
things during this time anyway.
It might be possible, but complicated (need modifications in
handler) to implement a kind of bucket brigade, to have the
beginning of the text displayed faster
*/
/* A thread to to the file reading / format conversion */
class LoadThread : public QThread {
int *statusp;
Rcl::Doc& out;
const Rcl::Doc& idoc;
string filename;
TempDir tmpdir;
int loglevel;
public:
string missing;
LoadThread(int *stp, Rcl::Doc& odoc, const Rcl::Doc& idc)
: statusp(stp), out(odoc), idoc(idc)
{
loglevel = DebugLog::getdbl()->getlevel();
}
~LoadThread() {
}
virtual void run() {
DebugLog::getdbl()->setloglevel(loglevel);
string reason;
if (!tmpdir.ok()) {
QMessageBox::critical(0, "Recoll",
Preview::tr("Cannot create temporary directory"));
LOGERR(("Preview: %s\n", tmpdir.getreason().c_str()));
*statusp = -1;
return;
}
// QMessageBox::critical(0, "Recoll", Preview::tr("File does not exist"));
FileInterner interner(idoc, rclconfig, tmpdir,
FileInterner::FIF_forPreview);
// We don't set the interner's target mtype to html because we
// do want the html filter to do its work: we won't use the
// text, but we need the conversion to utf-8
// interner.setTargetMType("text/html");
try {
string ipath = idoc.ipath;
FileInterner::Status ret = interner.internfile(out, ipath);
if (ret == FileInterner::FIDone || ret == FileInterner::FIAgain) {
// FIAgain is actually not nice here. It means that the record
// for the *file* of a multidoc was selected. Actually this
// shouldn't have had a preview link at all, but we don't know
// how to handle it now. Better to show the first doc than
// a mysterious error. Happens when the file name matches a
// a search term.
*statusp = 0;
// If we prefer html and it is available, replace the
// text/plain document text
if (prefs.previewHtml && !interner.get_html().empty()) {
out.text = interner.get_html();
out.mimetype = "text/html";
}
} else {
out.mimetype = interner.getMimetype();
interner.getMissingExternal(missing);
*statusp = -1;
}
} catch (CancelExcept) {
*statusp = -1;
}
}
};
// Insert into editor by chunks so that the top becomes visible
// earlier for big texts. This provokes some artifacts (adds empty line),
// so we can't set it too low.
#define CHUNKL 500*1000
/* A thread to convert to rich text (mark search terms) */
class ToRichThread : public QThread {
string ∈
const HiliteData &hdata;
list<string> &out;
int loglevel;
PlainToRichQtPreview *ptr;
public:
ToRichThread(string &i, const HiliteData& hd, list<string> &o,
PlainToRichQtPreview *_ptr)
: in(i), hdata(hd), out(o), ptr(_ptr)
{
loglevel = DebugLog::getdbl()->getlevel();
}
virtual void run()
{
DebugLog::getdbl()->setloglevel(loglevel);
try {
ptr->plaintorich(in, out, hdata, CHUNKL);
} catch (CancelExcept) {
}
}
};
/* A thread to implement short waiting. There must be a better way ! */
class WaiterThread : public QThread {
int ms;
public:
WaiterThread(int millis) : ms(millis) {}
virtual void run() {
msleep(ms);
}
};
class LoadGuard {
bool *m_bp;
public:
LoadGuard(bool *bp) {m_bp = bp ; *m_bp = true;}
~LoadGuard() {*m_bp = false; CancelCheck::instance().setCancel(false);}
};
bool Preview::loadDocInCurrentTab(const Rcl::Doc &idoc, int docnum)
{
LOGDEB1(("PreviewTextEdit::loadDocInCurrentTab()\n"));
if (m_loading) {
LOGERR(("ALready loading\n"));
return false;
}
LoadGuard guard(&m_loading);
CancelCheck::instance().setCancel(false);
m_haveAnchors = false;
setCurTabProps(idoc, docnum);
QString msg = QString("Loading: %1 (size %2 bytes)")
.arg(QString::fromLocal8Bit(idoc.url.c_str()))
.arg(QString::fromAscii(idoc.fbytes.c_str()));
// Create progress dialog and aux objects
const int nsteps = 20;
QProgressDialog progress(msg, tr("Cancel"), 0, nsteps, this);
progress.setMinimumDuration(2000);
WaiterThread waiter(100);
// Load and convert document
// idoc came out of the index data (main text and other fields missing).
// foc is the complete one what we are going to extract from storage.
Rcl::Doc fdoc;
int status = 1;
LoadThread lthr(&status, fdoc, idoc);
lthr.start();
int prog;
for (prog = 1;;prog++) {
waiter.start();
waiter.wait();
if (lthr.isFinished())
break;
progress.setValue(prog);
qApp->processEvents();
if (progress.wasCanceled()) {
CancelCheck::instance().setCancel();
}
if (prog >= 5)
sleep(1);
}
LOGDEB(("LoadFileInCurrentTab: after file load: cancel %d status %d"
" text length %d\n",
CancelCheck::instance().cancelState(), status, fdoc.text.length()));
if (CancelCheck::instance().cancelState())
return false;
if (status != 0) {
QString explain;
if (!lthr.missing.empty()) {
explain = QString::fromAscii("<br>") +
tr("Missing helper program: ") +
QString::fromLocal8Bit(lthr.missing.c_str());
}
QMessageBox::warning(0, "Recoll",
tr("Can't turn doc into internal "
"representation for ") +
fdoc.mimetype.c_str() + explain);
return false;
}
// Reset config just in case.
rclconfig->setKeyDir("");
// Create preview text: highlight search terms
// We don't do the highlighting for very big texts: too long. We
// should at least do special char escaping, in case a '&' or '<'
// somehow slipped through previous processing.
bool highlightTerms = fdoc.text.length() <
(unsigned long)prefs.maxhltextmbs * 1024 * 1024;
// Final text is produced in chunks so that we can display the top
// while still inserting at bottom
list<QString> qrichlst;
PreviewTextEdit *editor = currentEditor();
editor->setHtml("");
editor->m_data.format = Qt::RichText;
bool inputishtml = !fdoc.mimetype.compare("text/html");
#if 0
// For testing qtextedit bugs...
highlightTerms = true;
const char *textlist[] =
{
"Du plain text avec un\n <termtag>termtag</termtag> fin de ligne:",
"texte apres le tag\n",
};
const int listl = sizeof(textlist) / sizeof(char*);
for (int i = 0 ; i < listl ; i++)
qrichlst.push_back(QString::fromUtf8(textlist[i]));
#else
if (highlightTerms) {
progress.setLabelText(tr("Creating preview text"));
qApp->processEvents();
if (inputishtml) {
LOGDEB1(("Preview: got html %s\n", fdoc.text.c_str()));
editor->m_plaintorich->set_inputhtml(true);
} else {
LOGDEB1(("Preview: got plain %s\n", fdoc.text.c_str()));
editor->m_plaintorich->set_inputhtml(false);
}
list<string> richlst;
ToRichThread rthr(fdoc.text, m_hData, richlst, editor->m_plaintorich);
rthr.start();
for (;;prog++) {
waiter.start(); waiter.wait();
if (rthr.isFinished())
break;
progress.setValue(nsteps);
qApp->processEvents();
if (progress.wasCanceled()) {
CancelCheck::instance().setCancel();
}
if (prog >= 5)
sleep(1);
}
// Conversion to rich text done
if (CancelCheck::instance().cancelState()) {
if (richlst.size() == 0 || richlst.front().length() == 0) {
// We cant call closeCurrentTab here as it might delete
// the object which would be a nasty surprise to our
// caller.
return false;
} else {
richlst.back() += "<b>Cancelled !</b>";
}
}
// Convert C++ string list to QString list
for (list<string>::iterator it = richlst.begin();
it != richlst.end(); it++) {
qrichlst.push_back(QString::fromUtf8(it->c_str(), it->length()));
}
} else {
LOGDEB(("Preview: no hilighting\n"));
// No plaintorich() call. In this case, either the text is
// html and the html quoting is hopefully correct, or it's
// plain-text and there is no need to escape special
// characters. We'd still want to split in chunks (so that the
// top is displayed faster), but we must not cut tags, and
// it's too difficult on html. For text we do the splitting on
// a QString to avoid utf8 issues.
QString qr = QString::fromUtf8(fdoc.text.c_str(), fdoc.text.length());
int l = 0;
if (inputishtml) {
qrichlst.push_back(qr);
} else {
editor->setPlainText("");
editor->m_data.format = Qt::PlainText;
for (int pos = 0; pos < (int)qr.length(); pos += l) {
l = MIN(CHUNKL, qr.length() - pos);
qrichlst.push_back(qr.mid(pos, l));
}
}
}
#endif
prog = 2 * nsteps / 3;
progress.setLabelText(tr("Loading preview text into editor"));
qApp->processEvents();
int instep = 0;
for (list<QString>::iterator it = qrichlst.begin();
it != qrichlst.end(); it++, prog++, instep++) {
progress.setValue(prog);
qApp->processEvents();
editor->append(*it);
// We need to save the rich text for printing, the editor does
// not do it consistently for us.
editor->m_data.richtxt.append(*it);
if (progress.wasCanceled()) {
editor->append("<b>Cancelled !</b>");
LOGDEB(("LoadFileInCurrentTab: cancelled in editor load\n"));
break;
}
}
progress.close();
// Maybe the text was actually empty ? Switch to fields then. Else free-up
// the text memory.
bool textempty = fdoc.text.empty();
if (!textempty)
fdoc.text.clear();
editor->m_data.fdoc = fdoc;
if (textempty)
editor->toggleFields();
m_haveAnchors = editor->m_plaintorich->lastanchor != 0;
if (searchTextLine->text().length() != 0) {
// If there is a current search string, perform the search
m_canBeep = true;
doSearch(searchTextLine->text(), true, false);
} else {
// Position to the first query term
if (m_haveAnchors) {
QString aname =
QString::fromUtf8(editor->m_plaintorich->termAnchorName(1).c_str());
LOGDEB2(("Call movetoanchor(%s)\n", (const char *)aname.toUtf8()));
editor->scrollToAnchor(aname);
// Position the cursor approximately at the anchor (top of
// viewport) so that searches start from here
QTextCursor cursor = editor->cursorForPosition(QPoint(0, 0));
editor->setTextCursor(cursor);
m_curAnchor = 1;
}
}
// Enter document in document history
map<string,string>::const_iterator udit = idoc.meta.find(Rcl::Doc::keyudi);
if (udit != idoc.meta.end())
historyEnterDoc(g_dynconf, udit->second);
editor->setFocus();
emit(previewExposed(this, m_searchId, docnum));
LOGDEB(("LoadFileInCurrentTab: returning true\n"));
return true;
}
void PreviewTextEdit::createPopupMenu(const QPoint& pos)
{
LOGDEB1(("PreviewTextEdit::createPopupMenu()\n"));
QMenu *popup = new QMenu(this);
if (!m_dspflds) {
popup->addAction(tr("Show fields"), this, SLOT(toggleFields()));
} else {
popup->addAction(tr("Show main text"), this, SLOT(toggleFields()));
}
popup->addAction(tr("Print"), this, SLOT(print()));
popup->popup(mapToGlobal(pos));
}
// Either display document fields or main text
void PreviewTextEdit::toggleFields()
{
LOGDEB1(("PreviewTextEdit::toggleFields()\n"));
// If currently displaying fields, switch to body text
if (m_dspflds) {
if (m_data.format == Qt::PlainText)
setPlainText(m_data.richtxt);
else
setHtml(m_data.richtxt);
m_dspflds = false;
return;
}
// Else display fields
m_dspflds = true;
QString txt = "<html><head></head><body>\n";
txt += "<b>" + QString::fromLocal8Bit(m_data.url.c_str());
if (!m_data.ipath.empty())
txt += "|" + QString::fromUtf8(m_data.ipath.c_str());
txt += "</b><br><br>";
txt += "<dl>\n";
for (map<string,string>::const_iterator it = m_data.fdoc.meta.begin();
it != m_data.fdoc.meta.end(); it++) {
txt += "<dt>" + QString::fromUtf8(it->first.c_str()) + "</dt> "
+ "<dd>" + QString::fromUtf8(escapeHtml(it->second).c_str())
+ "</dd>\n";
}
txt += "</dl></body></html>";
setHtml(txt);
}
void PreviewTextEdit::mouseDoubleClickEvent(QMouseEvent *event)
{
LOGDEB2(("PreviewTextEdit::mouseDoubleClickEvent\n"));
QTextEdit::mouseDoubleClickEvent(event);
if (textCursor().hasSelection() && m_preview)
m_preview->emitWordSelect(textCursor().selectedText());
}
void PreviewTextEdit::print()
{
LOGDEB(("PreviewTextEdit::print\n"));
if (!m_preview)
return;
#ifndef QT_NO_PRINTER
QPrinter printer;
QPrintDialog *dialog = new QPrintDialog(&printer, this);
dialog->setWindowTitle(tr("Print Current Preview"));
if (dialog->exec() != QDialog::Accepted)
return;
QTextEdit::print(&printer);
#endif
}