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recoll/src/qtgui/preview_w.cpp

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/* Copyright (C) 2005 J.F.Dockes
* 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 <qtextbrowser.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 <qimage.h>
#include <qurl.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:
PlainToRichQtPreview()
: m_curanchor(1), m_lastanchor(0)
{
}
bool haveAnchors()
{
return m_lastanchor != 0;
}
virtual string header()
{
if (m_inputhtml) {
return cstr_null;
} else {
if (prefs.previewPlainPre) {
m_eolbr = false;
return string("<qt><head><title></title></head><body>"
"<pre>");
// Note: we could also use the following for
// line-folding instead of <br>s This would be
// possible without recomputing the whole text, much
// better perfs for toggling wrap/no-wrap:
// <pre style=\"white-space: pre-wrap\">
} else {
m_eolbr = true;
return string("<qt><head><title></title></head><body>");
}
}
}
virtual string startMatch(unsigned int grpidx)
{
LOGDEB2(("startMatch, grpidx %u\n", grpidx));
grpidx = m_hdata->grpsugidx[grpidx];
LOGDEB2(("startMatch, ugrpidx %u\n", grpidx));
m_groupanchors[grpidx].push_back(++m_lastanchor);
m_groupcuranchors[grpidx] = 0;
return string("<span style='color: ").
append((const char *)(prefs.qtermcolor.toUtf8())).
append(";font-weight: bold;").
append("'>").
append("<a name=\"").
append(termAnchorName(m_lastanchor)).
append("\">");
}
virtual string endMatch()
{
return string("</a></span>");
}
virtual string termAnchorName(int i) const
{
static const char *termAnchorNameBase = "TRM";
char acname[sizeof(termAnchorNameBase) + 20];
sprintf(acname, "%s%d", termAnchorNameBase, i);
return string(acname);
}
virtual string startChunk()
{
return "<pre>";
}
int nextAnchorNum(int grpidx)
{
LOGDEB2(("nextAnchorNum: group %d\n", grpidx));
map<unsigned int, unsigned int>::iterator curit =
m_groupcuranchors.find(grpidx);
map<unsigned int, vector<int> >::iterator vecit =
m_groupanchors.find(grpidx);
if (grpidx == -1 || curit == m_groupcuranchors.end() ||
vecit == m_groupanchors.end()) {
if (m_curanchor >= m_lastanchor)
m_curanchor = 1;
else
m_curanchor++;
} else {
if (curit->second >= vecit->second.size() -1)
m_groupcuranchors[grpidx] = 0;
else
m_groupcuranchors[grpidx]++;
m_curanchor = vecit->second[m_groupcuranchors[grpidx]];
LOGDEB2(("nextAnchorNum: curanchor now %d\n", m_curanchor));
}
return m_curanchor;
}
int prevAnchorNum(int grpidx)
{
map<unsigned int, unsigned int>::iterator curit =
m_groupcuranchors.find(grpidx);
map<unsigned int, vector<int> >::iterator vecit =
m_groupanchors.find(grpidx);
if (grpidx == -1 || curit == m_groupcuranchors.end() ||
vecit == m_groupanchors.end()) {
if (m_curanchor <= 1)
m_curanchor = m_lastanchor;
else
m_curanchor--;
} else {
if (curit->second <= 0)
m_groupcuranchors[grpidx] = vecit->second.size() -1;
else
m_groupcuranchors[grpidx]--;
m_curanchor = vecit->second[m_groupcuranchors[grpidx]];
}
return m_curanchor;
}
QString curAnchorName() const
{
return QString::fromUtf8(termAnchorName(m_curanchor).c_str());
}
private:
int m_curanchor;
int m_lastanchor;
// Lists of anchor numbers (match locations) for the term (groups)
// in the query (the map key is and index into HighlightData.groups).
map<unsigned int, vector<int> > m_groupanchors;
map<unsigned int, unsigned int> m_groupcuranchors;
};
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);
searchTextCMB = new QComboBox(this);
searchTextCMB->setEditable(true);
searchTextCMB->setInsertPolicy(QComboBox::NoInsert);
searchTextCMB->setDuplicatesEnabled(false);
for (unsigned int i = 0; i < m_hData.ugroups.size(); i++) {
QString s;
for (unsigned int j = 0; j < m_hData.ugroups[i].size(); j++) {
s.append(QString::fromUtf8(m_hData.ugroups[i][j].c_str()));
if (j != m_hData.ugroups[i].size()-1)
s.append(" ");
}
searchTextCMB->addItem(s);
}
searchTextCMB->setEditText("");
layout3->addWidget(searchTextCMB);
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(searchTextCMB);
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(searchTextCMB, SIGNAL(activated(int)),
this, SLOT(searchTextFromIndex(int)));
connect(searchTextCMB, SIGNAL(editTextChanged(const QString&)),
this, SLOT(searchTextChanged(const QString&)));
connect(nextButton, SIGNAL(clicked()), this, SLOT(nextPressed()));
connect(prevButton, SIGNAL(clicked()), this, SLOT(prevPressed()));
connect(clearPB, SIGNAL(clicked()), searchTextCMB, SLOT(clearEditText()));
connect(pvTab, SIGNAL(currentChanged(QWidget *)),
this, SLOT(currentChanged(QWidget *)));
connect(bt, SIGNAL(clicked()), this, SLOT(closeCurrentTab()));
m_dynSearchActive = false;
m_canBeep = true;
if (prefs.pvwidth > 100) {
resize(prefs.pvwidth, prefs.pvheight);
}
m_loading = false;
currentChanged(pvTab->currentWidget());
m_justCreated = true;
}
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();
/* Release all temporary files (but maybe none is actually set) */
for (int i = 0; i < pvTab->count(); i++) {
QWidget *tw = pvTab->widget(i);
if (tw) {
PreviewTextEdit *edit =
tw->findChild<PreviewTextEdit*>("pvEdit");
if (edit) {
forgetTempFile(edit->m_tmpfilename);
}
}
}
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_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_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(searchTextCMB->currentText(), true, false);
return true;
}
if (target != searchTextCMB)
return QApplication::sendEvent(searchTextCMB, event);
} else {
if (edit &&
(target == edit || target == edit->viewport())) {
if (keyEvent->key() == Qt::Key_Slash ||
(keyEvent->key() == Qt::Key_F &&
(keyEvent->modifiers() & Qt::ControlModifier))) {
LOGDEB2(("Preview::eventFilter: got / or C-F\n"));
searchTextCMB->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::searchTextChanged(const QString & text)
{
LOGDEB1(("Search line text changed. text: '%s'\n",
(const char *)text.toAscii()));
m_searchTextFromIndex = -1;
if (text.isEmpty()) {
m_dynSearchActive = false;
clearPB->setEnabled(false);
} else {
m_dynSearchActive = true;
clearPB->setEnabled(true);
doSearch(text, false, false);
}
}
void Preview::searchTextFromIndex(int idx)
{
LOGDEB1(("search line from index %d\n", idx));
m_searchTextFromIndex = idx;
}
PreviewTextEdit *Preview::currentEditor()
{
LOGDEB2(("Preview::currentEditor()\n"));
QWidget *tw = pvTab->currentWidget();
PreviewTextEdit *edit = 0;
if (tw) {
edit = tw->findChild<PreviewTextEdit*>("pvEdit");
}
return edit;
}
// Save current document to file
void Preview::emitSaveDocToFile()
{
PreviewTextEdit *ce = currentEditor();
if (ce && !ce->m_dbdoc.url.empty()) {
emit saveDocToFile(ce->m_dbdoc);
}
}
// 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] idx %d next %d rev %d word %d\n",
(const char *)_text.toUtf8(), m_searchTextFromIndex, int(next),
int(reverse), int(wordOnly)));
QString text = _text;
bool matchCase = matchCheck->isChecked();
PreviewTextEdit *edit = currentEditor();
if (edit == 0) {
// ??
return;
}
if (text.isEmpty() || m_searchTextFromIndex != -1) {
if (!edit->m_plaintorich->haveAnchors()) {
LOGDEB(("NO ANCHORS\n"));
return;
}
// The combobox indices are equal to the search ugroup indices
// in hldata, that's how we built the list.
if (reverse) {
edit->m_plaintorich->prevAnchorNum(m_searchTextFromIndex);
} else {
edit->m_plaintorich->nextAnchorNum(m_searchTextFromIndex);
}
QString aname = edit->m_plaintorich->curAnchorName();
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(("Preview::nextPressed\n"));
doSearch(searchTextCMB->currentText(), true, false);
}
void Preview::prevPressed()
{
LOGDEB2(("Preview::prevPressed\n"));
doSearch(searchTextCMB->currentText(), true, true);
}
// Called when user clicks on tab
void Preview::currentChanged(QWidget * tw)
{
LOGDEB2(("PreviewTextEdit::currentChanged\n"));
PreviewTextEdit *edit =
tw->findChild<PreviewTextEdit*>("pvEdit");
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);
searchTextCMB->installEventFilter(this);
emit(previewExposed(this, m_searchId, edit->m_docnum));
}
void Preview::closeCurrentTab()
{
LOGDEB1(("Preview::closeCurrentTab: m_loading %d\n", m_loading));
if (m_loading) {
CancelCheck::instance().setCancel();
return;
}
PreviewTextEdit *e = currentEditor();
if (e)
forgetTempFile(e->m_tmpfilename);
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(("Preview::setCurTabProps\n"));
QString title;
string ctitle;
if (doc.getmeta(Rcl::Doc::keytt, &ctitle) && !ctitle.empty()) {
title = QString::fromUtf8(ctitle.c_str(), ctitle.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(theconfig->getDefCharset(), doc.url, url);
string tiptxt = url + string("\n");
tiptxt += doc.mimetype + " " + string(datebuf) + "\n";
if (!ctitle.empty())
tiptxt += ctitle + "\n";
pvTab->setTabToolTip(curidx,
QString::fromUtf8(tiptxt.c_str(), tiptxt.length()));
PreviewTextEdit *e = currentEditor();
if (e) {
e->m_url = doc.url;
e->m_ipath = doc.ipath;
e->m_docnum = docnum;
}
}
bool Preview::makeDocCurrent(const Rcl::Doc& doc, int docnum, bool sametab)
{
LOGDEB(("Preview::makeDocCurrent: %s\n", doc.url.c_str()));
if (m_loading) {
LOGERR(("Already loading\n"));
return false;
}
/* 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_url.compare(doc.url) &&
!edit->m_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::togglePlainPre()
{
prefs.previewPlainPre = !prefs.previewPlainPre;
PreviewTextEdit *editor = currentEditor();
if (editor)
loadDocInCurrentTab(editor->m_dbdoc, editor->m_docnum);
}
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).
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;
TempDir tmpdir;
int loglevel;
public:
string missing;
TempFile imgtmp;
string tdirreason;
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);
if (!tmpdir.ok()) {
tdirreason = tmpdir.getreason();
LOGERR(("Preview: %s\n", tdirreason.c_str()));
*statusp = -1;
return;
}
FileInterner interner(idoc, theconfig, tmpdir,
FileInterner::FIF_forPreview);
FIMissingStore mst;
interner.setMissingStore(&mst);
// Even when previewHtml is set, 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/plain, but we want the
// text/html to be converted to utf-8 (for highlight processing)
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";
}
imgtmp = interner.get_imgtmp();
} else {
out.mimetype = interner.getMimetype();
interner.getMissingExternal(&mst, 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 &in;
const HighlightData &hdata;
list<string> &out;
int loglevel;
PlainToRichQtPreview *ptr;
public:
ToRichThread(string &i, const HighlightData& 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) {
}
}
};
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(("Preview::loadDocInCurrentTab()\n"));
LoadGuard guard(&m_loading);
CancelCheck::instance().setCancel(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);
////////////////////////////////////////////////////////////////////////
// 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++) {
if (lthr.wait(100))
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.tdirreason.empty()) {
explain = tr("Cannot create temporary directory: ") +
QString::fromLocal8Bit(lthr.tdirreason.c_str());
QMessageBox::critical(0, "Recoll", explain);
} else 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);
} else {
QMessageBox::warning(0, "Recoll",
tr("Error while loading file"));
}
return false;
}
// Reset config just in case.
theconfig->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();
// For an actual html file, if we want to have the images and
// style loaded in the preview, we need to set the search
// path. Not too sure this is a good idea as I find them rather
// distracting when looking for text, esp. with qtextedit
// relatively limited html support (text sometimes get hidden by
// images).
#if 0
string path = fileurltolocalpath(idoc.url);
if (!path.empty()) {
path = path_getfather(path);
QStringList paths(QString::fromLocal8Bit(path.c_str()));
editor->setSearchPaths(paths);
}
#endif
editor->setHtml("");
editor->m_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++) {
if (rthr.wait(100))
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 can't 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_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
///////////////////////////////////////////////////////////
// Load text into editor window.
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_richtxt.append(*it);
if (progress.wasCanceled()) {
editor->append("<b>Cancelled !</b>");
LOGDEB(("LoadFileInCurrentTab: cancelled in editor load\n"));
break;
}
}
progress.close();
editor->m_curdsp = PreviewTextEdit::PTE_DSPTXT;
////////////////////////////////////////////////////////////////////////
// Finishing steps
// Maybe the text was actually empty ? Switch to fields then. Else free-up
// the text memory in the loaded document. We still have a copy of the text
// in editor->m_richtxt
bool textempty = fdoc.text.empty();
if (!textempty)
fdoc.text.clear();
editor->m_fdoc = fdoc;
editor->m_dbdoc = idoc;
if (textempty)
editor->displayFields();
// If this is an image, display it instead of the text.
if (!idoc.mimetype.compare(0, 6, "image/")) {
string fn = fileurltolocalpath(idoc.url);
// If the command wants a file but this is not a file url, or
// there is an ipath that it won't understand, we need a temp file:
theconfig->setKeyDir(path_getfather(fn));
if (fn.empty() || !idoc.ipath.empty()) {
TempFile temp = lthr.imgtmp;
if (temp.isNotNull()) {
LOGDEB1(("Preview: load: got temp file from internfile\n"));
} else if (!FileInterner::idocToFile(temp, string(),
theconfig, idoc)) {
temp.release(); // just in case.
}
if (temp.isNotNull()) {
rememberTempFile(temp);
fn = temp->filename();
editor->m_tmpfilename = fn;
} else {
editor->m_tmpfilename.erase();
fn.erase();
}
}
if (!fn.empty()) {
editor->m_image = QImage(fn.c_str());
if (!editor->m_image.isNull())
editor->displayImage();
}
}
// Position the editor so that the first search term is visible
if (searchTextCMB->currentText().length() != 0) {
// If there is a current search string, perform the search
m_canBeep = true;
doSearch(searchTextCMB->currentText(), true, false);
} else {
// Position to the first query term
if (editor->m_plaintorich->haveAnchors()) {
QString aname = editor->m_plaintorich->curAnchorName();
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);
}
}
// Enter document in document history
string udi;
if (idoc.getmeta(Rcl::Doc::keyudi, &udi)) {
historyEnterDoc(g_dynconf, udi);
}
editor->setFocus();
emit(previewExposed(this, m_searchId, docnum));
LOGDEB(("LoadFileInCurrentTab: returning true\n"));
return true;
}
PreviewTextEdit::PreviewTextEdit(QWidget* parent, const char* nm, Preview *pv)
: QTextBrowser(parent), m_preview(pv),
m_plaintorich(new PlainToRichQtPreview()),
m_dspflds(false), m_docnum(-1)
{
setContextMenuPolicy(Qt::CustomContextMenu);
setObjectName(nm);
connect(this, SIGNAL(customContextMenuRequested(const QPoint&)),
this, SLOT(createPopupMenu(const QPoint&)));
setOpenExternalLinks(false);
setOpenLinks(false);
}
PreviewTextEdit::~PreviewTextEdit()
{
delete m_plaintorich;
}
void PreviewTextEdit::createPopupMenu(const QPoint& pos)
{
LOGDEB1(("PreviewTextEdit::createPopupMenu()\n"));
QMenu *popup = new QMenu(this);
switch (m_curdsp) {
case PTE_DSPTXT:
popup->addAction(tr("Show fields"), this, SLOT(displayFields()));
if (!m_image.isNull())
popup->addAction(tr("Show image"), this, SLOT(displayImage()));
break;
case PTE_DSPFLDS:
popup->addAction(tr("Show main text"), this, SLOT(displayText()));
if (!m_image.isNull())
popup->addAction(tr("Show image"), this, SLOT(displayImage()));
break;
case PTE_DSPIMG:
default:
popup->addAction(tr("Show fields"), this, SLOT(displayFields()));
popup->addAction(tr("Show main text"), this, SLOT(displayText()));
break;
}
popup->addAction(tr("Select All"), this, SLOT(selectAll()));
popup->addAction(tr("Copy"), this, SLOT(copy()));
popup->addAction(tr("Print"), this, SLOT(print()));
if (prefs.previewPlainPre) {
popup->addAction(tr("Fold lines"), m_preview, SLOT(togglePlainPre()));
} else {
popup->addAction(tr("Preserve indentation"),
m_preview, SLOT(togglePlainPre()));
}
// Need to check ipath until we fix the internfile bug that always
// has it convert to html for top level docs
if (!m_dbdoc.url.empty() && !m_dbdoc.ipath.empty())
popup->addAction(tr("Save document to file"),
m_preview, SLOT(emitSaveDocToFile()));
popup->popup(mapToGlobal(pos));
}
// Display main text
void PreviewTextEdit::displayText()
{
LOGDEB1(("PreviewTextEdit::displayText()\n"));
if (m_format == Qt::PlainText)
setPlainText(m_richtxt);
else
setHtml(m_richtxt);
m_curdsp = PTE_DSPTXT;
}
// Display field values
void PreviewTextEdit::displayFields()
{
LOGDEB1(("PreviewTextEdit::displayFields()\n"));
QString txt = "<html><head></head><body>\n";
txt += "<b>" + QString::fromLocal8Bit(m_url.c_str());
if (!m_ipath.empty())
txt += "|" + QString::fromUtf8(m_ipath.c_str());
txt += "</b><br><br>";
txt += "<dl>\n";
for (map<string,string>::const_iterator it = m_fdoc.meta.begin();
it != m_fdoc.meta.end(); it++) {
if (!it->second.empty())
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);
m_curdsp = PTE_DSPFLDS;
}
void PreviewTextEdit::displayImage()
{
LOGDEB1(("PreviewTextEdit::displayImage()\n"));
if (m_image.isNull())
displayText();
setPlainText("");
if (m_image.width() > width() ||
m_image.height() > height()) {
m_image = m_image.scaled(width(), height(), Qt::KeepAspectRatio);
}
document()->addResource(QTextDocument::ImageResource, QUrl("image"),
m_image);
QTextCursor cursor = textCursor();
cursor.insertImage("image");
m_curdsp = PTE_DSPIMG;
}
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
}
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