okular/ui/searchlineedit.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2004 by Enrico Ros <eros.kde@email.it>                  *
   3  *   Copyright (C) 2007 by Pino Toscano <pino@kde.org>                     *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  ***************************************************************************/
  10
  11 #include "searchlineedit.h"
  12
  13 // local includes
  14 #include "core/document.h"
  15
  16 // qt/kde includes
  17 #include <qapplication.h>
  18 #include <qtimer.h>
  19 #include <kcolorscheme.h>
  20
  21 SearchLineEdit::SearchLineEdit( QWidget * parent, Okular::Document * document )
  22     : KLineEdit( parent ), m_document( document ), m_minLength( 0 ),
  23       m_caseSensitivity( Qt::CaseInsensitive ),
  24       m_searchType( Okular::Document::AllDocument ), m_id( -1 ),
  25       m_moveViewport( false ), m_changed( false ), m_fromStart( true )
  26 {
  27     setObjectName( "SearchLineEdit" );
  28     setClearButtonShown( true );
  29
  30     // a timer to ensure that we don't flood the document with requests to search
  31     m_inputDelayTimer = new QTimer(this);
  32     m_inputDelayTimer->setSingleShot(true);
  33     connect( m_inputDelayTimer, SIGNAL( timeout() ),
  34              this, SLOT( startSearch() ) );
  35
  36     connect(this, SIGNAL( textChanged(const QString &) ), this, SLOT( slotTextChanged(const QString &) ));
  37     connect(document, SIGNAL( searchFinished(int, Okular::Document::SearchStatus) ), this, SLOT( searchFinished(int, Okular::Document::SearchStatus) ));
  38 }
  39
  40 void SearchLineEdit::clearText()
  41 {
  42     clear();
  43 }
  44
  45 void SearchLineEdit::setSearchCaseSensitivity( Qt::CaseSensitivity cs )
  46 {
  47     m_caseSensitivity = cs;
  48     m_changed = true;
  49 }
  50
  51 void SearchLineEdit::setSearchMinimumLength( int length )
  52 {
  53     m_minLength = length;
  54     m_changed = true;
  55 }
  56
  57 void SearchLineEdit::setSearchType( Okular::Document::SearchType type )
  58 {
  59     if ( type == m_searchType )
  60         return;
  61
  62     m_searchType = type;
  63     m_changed = ( m_searchType != Okular::Document::NextMatch && m_searchType != Okular::Document::PreviousMatch );
  64 }
  65
  66 void SearchLineEdit::setSearchId( int id )
  67 {
  68     m_id = id;
  69     m_changed = true;
  70 }
  71
  72 void SearchLineEdit::setSearchColor( const QColor &color )
  73 {
  74     m_color = color;
  75     m_changed = true;
  76 }
  77
  78 void SearchLineEdit::setSearchMoveViewport( bool move )
  79 {
  80     m_moveViewport = move;
  81 }
  82
  83 void SearchLineEdit::setSearchFromStart( bool fromStart )
  84 {
  85     m_fromStart = fromStart;
  86 }
  87
  88 void SearchLineEdit::restartSearch()
  89 {
  90     m_inputDelayTimer->stop();
  91     m_inputDelayTimer->start( 500 );
  92     m_changed = true;
  93 }
  94
  95 void SearchLineEdit::findNext()
  96 {
  97     if ( m_id == -1 || m_searchType != Okular::Document::NextMatch )
  98         return;
  99
 100     if ( !m_changed )
 101         m_document->continueSearch( m_id, m_searchType );
 102     else
 103         startSearch();
 104 }
 105
 106 void SearchLineEdit::findPrev()
 107 {
 108     if ( m_id == -1 || m_searchType != Okular::Document::PreviousMatch )
 109         return;
 110
 111     if ( !m_changed )
 112         m_document->continueSearch( m_id, m_searchType );
 113     else
 114         startSearch();
 115 }
 116
 117 void SearchLineEdit::slotTextChanged( const QString & text )
 118 {
 119     QPalette pal = palette();
 120     const int textLength = text.length();
 121     if ( textLength > 0 && textLength < m_minLength )
 122     {
 123         const KColorScheme scheme( QPalette::Active, KColorScheme::View );
 124         pal.setBrush( QPalette::Base, scheme.background( KColorScheme::NegativeBackground ) );
 125         pal.setBrush( QPalette::Text, scheme.foreground( KColorScheme::NegativeText ) );
 126     }
 127     else
 128     {
 129         const QPalette qAppPalette = QApplication::palette();
 130         pal.setColor( QPalette::Base, qAppPalette.color( QPalette::Base ) );
 131         pal.setColor( QPalette::Text, qAppPalette.color( QPalette::Text ) );
 132     }
 133     setPalette( pal );
 134     restartSearch();
 135 }
 136
 137 void SearchLineEdit::startSearch()
 138 {
 139     if ( m_id == -1 || !m_color.isValid() )
 140         return;
 141
 142     if ( m_changed && ( m_searchType == Okular::Document::NextMatch || m_searchType == Okular::Document::PreviousMatch ) )
 143     {
 144         m_document->resetSearch( m_id );
 145     }
 146     m_changed = false;
 147     // search text if have more than 3 chars or else clear search
 148     QString thistext = text();
 149     if ( thistext.length() >= qMax( m_minLength, 1 ) )
 150     {
 151         m_document->searchText( m_id, thistext, m_fromStart, m_caseSensitivity,
 152                                 m_searchType, m_moveViewport, m_color );
 153     }
 154     else
 155         m_document->resetSearch( m_id );
 156 }
 157
 158 void SearchLineEdit::searchFinished( int id, Okular::Document::SearchStatus endStatus )
 159 {
 160     // ignore the searches not started by this search edit
 161     if ( id != m_id )
 162         return;
 163
 164     // if not found, use warning colors
 165     if ( endStatus == Okular::Document::NoMatchFound )
 166     {
 167         QPalette pal = palette();
 168         const KColorScheme scheme( QPalette::Active, KColorScheme::View );
 169         pal.setBrush( QPalette::Base, scheme.background( KColorScheme::NegativeBackground ) );
 170         pal.setBrush( QPalette::Text, scheme.foreground( KColorScheme::NegativeText ) );
 171         setPalette( pal );
 172     }
 173 }
 174
 175 #include "searchlineedit.moc"