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//C- -------------------------------------------------------------------
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//C- Copyright (c) 2002 Leon Bottou and Yann Le Cun.
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//C- Copyright (c) 2001 AT&T
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//C- This software is subject to, and may be distributed under, the
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//C- GNU General Public License, Version 2. The license should have
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//C- accompanied the software or you may obtain a copy of the license
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//C- from the Free Software Foundation at http://www.fsf.org .
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//C- This program is distributed in the hope that it will be useful,
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//C- but WITHOUT ANY WARRANTY; without even the implied warranty of
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//C- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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//C- GNU General Public License for more details.
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//C- DjVuLibre-3.5 is derived from the DjVu(r) Reference Library
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//C- distributed by Lizardtech Software. On July 19th 2002, Lizardtech
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//C- Software authorized us to replace the original DjVu(r) Reference
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//C- Library notice by the following text (see doc/lizard2002.djvu):
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//C- ------------------------------------------------------------------
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//C- | DjVu (r) Reference Library (v. 3.5)
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//C- | Copyright (c) 1999-2001 LizardTech, Inc. All Rights Reserved.
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//C- | The DjVu Reference Library is protected by U.S. Pat. No.
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//C- | 6,058,214 and patents pending.
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//C- | This software is subject to, and may be distributed under, the
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//C- | GNU General Public License, Version 2. The license should have
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//C- | accompanied the software or you may obtain a copy of the license
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//C- | from the Free Software Foundation at http://www.fsf.org .
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//C- | The computer code originally released by LizardTech under this
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//C- | license and unmodified by other parties is deemed "the LIZARDTECH
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//C- | ORIGINAL CODE." Subject to any third party intellectual property
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//C- | claims, LizardTech grants recipient a worldwide, royalty-free,
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//C- | non-exclusive license to make, use, sell, or otherwise dispose of
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//C- | the LIZARDTECH ORIGINAL CODE or of programs derived from the
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//C- | LIZARDTECH ORIGINAL CODE in compliance with the terms of the GNU
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//C- | General Public License. This grant only confers the right to
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//C- | infringe patent claims underlying the LIZARDTECH ORIGINAL CODE to
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//C- | the extent such infringement is reasonably necessary to enable
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//C- | recipient to make, have made, practice, sell, or otherwise dispose
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//C- | of the LIZARDTECH ORIGINAL CODE (or portions thereof) and not to
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//C- | any greater extent that may be necessary to utilize further
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//C- | modifications or combinations.
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//C- | The LIZARDTECH ORIGINAL CODE is provided "AS IS" WITHOUT WARRANTY
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//C- | OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
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//C- | TO ANY WARRANTY OF NON-INFRINGEMENT, OR ANY IMPLIED WARRANTY OF
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//C- | MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
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//C- +------------------------------------------------------------------
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// $Id: qd_search_dialog.cpp,v 1.13 2004/07/07 19:23:36 leonb Exp $
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// $Name: release_3_5_14 $
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# pragma implementation
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#include "ByteStream.h"
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#include "qd_search_dialog.h"
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#include <qpushbutton.h>
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#include <qcheckbox.h>
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#include <qlineedit.h>
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#include <qmessagebox.h>
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#include <qapplication.h>
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bool QDSearchDialog::all_pages=true;
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bool QDSearchDialog::case_sensitive=false;
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bool QDSearchDialog::whole_word=false;
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bool QDSearchDialog::search_backwards=false;
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static GList<DjVuTXT::Zone*>
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search_string(DjVuTXT *txt, QString dat, int &pfrom,
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bool fwd, bool casep, bool wordp)
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GList<DjVuTXT::Zone*> res;
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GUTF8String utext = txt->textUTF8;
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QString qtext = QStringFromGString(utext);
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dat = dat.stripWhiteSpace();
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if (from < 0 || from >= (int)qtext.length())
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from = qtext.length() - 1;
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found = qtext.find(dat, from, casep);
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found = qtext.findRev(dat, from, casep);
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foundx = found + dat.length();
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if (found==0 || !qtext[found-1].isLetterOrNumber())
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if (foundx==(int)qtext.length() || !qtext[foundx].isLetterOrNumber())
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if (++pfrom >= (int)qtext.length())
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// Compute indices into utf8 string
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const char *ctext = (const char*)utext;
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while (ctext[ui] && ufoundx<0)
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if (ufound<0 && qi == found)
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if (ufoundx<0 && qi == foundx)
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if ( (ctext[ui] & 0xc0) != 0x80)
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if (ufoundx > ufound && ufound >= 0)
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txt->page_zone.find_zones(res, ufound, ufoundx);
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QDSearchDialog::slotSearch(void)
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if (text->text()=="") return;
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bool fwd=!back_butt->isChecked();
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search_butt->setText(tr("&Stop"));
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text->setEnabled(FALSE);
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clear_butt->setEnabled(FALSE);
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// 'asked_once' is useful for one-page searches
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bool asked_once=false;
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// 'start_page_num' is for the document search
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int start_page_num=page_num;
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// Will be true if no TXT chunks have been found
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// We want to place 'anno' here because to keep it alive as long
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// as zone_list is alive.
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GList<DjVuTXT::Zone *> zone_list;
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GP<DjVuFile> page_file=doc->get_djvu_file(page_num);
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if (!page_file->is_all_data_present())
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GP<DataPool> pool=page_file->get_init_data_pool();
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// Wait until we have data for this file
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while(!stop && !page_file->is_all_data_present())
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int done=5*(20*pool->get_size()/pool->get_length());
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QString buffer=tr("Loading page %1: %2%...")
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status_label->setText(buffer);
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qApp->processEvents(100);
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page_num=seen_page_num;
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GP<ByteStream> str=page_file->get_text();
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anno=DjVuText::create();
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GP<DjVuTXT> txt=anno->txt;
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zone_list = search_string(txt, text->text(), page_pos,
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fwd, case_butt->isChecked(),
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whole_word_butt->isChecked());
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if (zone_list.size())
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// Didn't find anything. Switch to the next page or give up
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int pages_num=doc->get_pages_num();
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if (!all_pages_butt->isChecked() ||
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fwd && page_num>=pages_num-1 ||
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page_num=seen_page_num;
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if (all_pages_butt->isChecked())
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msg=tr("End of document reached. "
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"Continue from the beginning?");
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msg=tr("Beginning of document reached. "
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"Continue from the end?");
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msg=tr("End of page reached. "
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"Continue from the beginning?");
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msg=tr("Beginning of page reached. "
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"Continue from the end?");
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if (QMessageBox::information(this, "DjVu", msg,
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tr("&Yes"), tr("&No"))==0)
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if (all_pages_butt->isChecked())
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page_num=doc->get_pages_num();
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page_num=seen_page_num;
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// Going to the next page (or rewinding to the other side of
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// this page if asked to)
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QString mesg=tr("Page ")+QString::number(page_num+1);
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status_label->setText(mesg);
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// Wrapped back and returned
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if (all_pages_butt->isChecked() && page_num==start_page_num)
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page_num=seen_page_num;
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emit sigDisplaySearchResults(seen_page_num=page_num, zone_list);
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if (zone_list.size()==0)
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if (all_pages_butt->isChecked())
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showMessage(this, tr("DjVu Search Failed"),
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tr("After looking through every page of this document,\n"
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"we have found that none of them contain\n"
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"textual information. This means that either the document\n"
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"creator did not run an OCR engine on this document,\n"
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"or the OCR engine did not recognize any text.\n"
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"The search is impossible."),
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showMessage(this, tr("DjVu Search Failed"),
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tr("This page does not contain textual information,\n"
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"which means that either the creator of this document\n"
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"did not run an OCR engine on it, or the OCR engine\n"
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"did not recognize any text on this page.\n"
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"The search is impossible."),
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showInfo(this, "DjVu", tr("Search string not found"));
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search_butt->setText(tr("&Find"));
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QString mesg=tr("Page ")+QString::number(page_num+1);
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status_label->setText(mesg);
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text->setEnabled(TRUE);
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clear_butt->setEnabled(TRUE);
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catch(const GException & exc)
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status_label->hide();
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search_butt->setText(tr("&Find"));
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QString mesg=tr("Page ")+QString::number(page_num+1);
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status_label->setText(mesg);
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text->setEnabled(TRUE);
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clear_butt->setEnabled(TRUE);
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showError(this, exc);
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QDSearchDialog::slotSetPageNum(int page_num_)
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seen_page_num=page_num_;
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if (page_num!=page_num_)
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page_num = seen_page_num;
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QString mesg=tr("Page ")+QString::number(page_num+1);
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status_label->setText(mesg);
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QDSearchDialog::slotTextChanged(const QString & qtext)
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const char * const str=qtext;
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search_butt->setEnabled(str && strlen(str));
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QDSearchDialog::done(int rc)
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all_pages=all_pages_butt->isChecked();
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case_sensitive=case_butt->isChecked();
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whole_word=whole_word_butt->isChecked();
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search_backwards=back_butt->isChecked();
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QDSearchDialog::QDSearchDialog(int page_num_, const GP<DjVuDocument> & doc_,
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QWidget * parent, const char * name, bool modal) :
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QeDialog(parent, name, modal), page_num(page_num_), doc(doc_)
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seen_page_num = page_num;
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setCaption(tr("DjVu: Find"));
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QWidget * start=startWidget();
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QVBoxLayout * vlay=new QVBoxLayout(start, 10, 10);
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QHBoxLayout * hlay=new QHBoxLayout(10);
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vlay->addLayout(hlay);
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label=new QLabel(tr("Find: "), start);
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hlay->addWidget(label);
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text=new QLineEdit(start, "search_text");
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label->setBuddy(text);
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hlay->addWidget(text, 1);
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hlay=new QHBoxLayout(10);
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vlay->addLayout(hlay);
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all_pages_butt=new QCheckBox(tr("Search &all pages"), start, "all_pages_butt");
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if (doc->get_pages_num()>1)
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all_pages_butt->setChecked(all_pages);
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all_pages_butt->setChecked(TRUE);
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all_pages_butt->setEnabled(FALSE);
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hlay->addWidget(all_pages_butt);
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case_butt=new QCheckBox(tr("&Case sensitive"), start, "case_butt");
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case_butt->setChecked(case_sensitive);
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hlay->addWidget(case_butt);
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whole_word_butt=new QCheckBox(tr("&Whole word"), start, "whole_word_butt");
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whole_word_butt->setChecked(whole_word);
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hlay->addWidget(whole_word_butt);
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back_butt=new QCheckBox(tr("Search &backwards"), start, "back_butt");
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back_butt->setChecked(search_backwards);
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hlay->addWidget(back_butt);
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QHBoxLayout * butt_lay=new QHBoxLayout(10);
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vlay->addLayout(butt_lay);
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status_label=new QLabel(tr("Loading page WWWWWWW"), start);
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status_label->setMinimumSize(status_label->sizeHint());
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QString mesg=tr("Page ")+QString::number(page_num+1);
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status_label->setText(mesg);
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butt_lay->addWidget(status_label);
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butt_lay->addStretch(1);
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search_butt=new QPushButton(tr("&Find"), start, "search_butt");
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search_butt->setEnabled(FALSE);
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butt_lay->addWidget(search_butt);
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clear_butt=new QPushButton(tr("&Clear"), start, "clear_butt");
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butt_lay->addWidget(clear_butt);
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QPushButton * close_butt=new QPushButton(tr("C&lose"), start, "close_butt");
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butt_lay->addWidget(close_butt);
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search_butt->setDefault(TRUE);
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connect(search_butt, SIGNAL(clicked(void)), this, SLOT(slotSearch(void)));
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connect(clear_butt, SIGNAL(clicked(void)), text, SLOT(clear(void)));
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connect(close_butt, SIGNAL(clicked(void)), this, SLOT(reject(void)));
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connect(text, SIGNAL(textChanged(const QString &)),
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this, SLOT(slotTextChanged(const QString &)));
added
removed
gui/shared/QT/qd_search_dialog.cpp
