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 "animatedwidget.h"
  15 #include "core/document.h"
  16
  17 // qt/kde includes
  18 #include <qapplication.h>
  19 #include <qlayout.h>
  20 #include <qtimer.h>
  21 #include <kcolorscheme.h>
  22
  23 SearchLineEdit::SearchLineEdit( QWidget * parent, Okular::Document * document )
  24     : KLineEdit( parent ), m_document( document ), m_minLength( 0 ),
  25       m_caseSensitivity( Qt::CaseInsensitive ),
  26       m_searchType( Okular::Document::AllDocument ), m_id( -1 ),
  27       m_moveViewport( false ), m_changed( false ), m_fromStart( true )
  28 {
  29     setObjectName( "SearchLineEdit" );
  30     setClearButtonShown( true );
  31
  32     // a timer to ensure that we don't flood the document with requests to search
  33     m_inputDelayTimer = new QTimer(this);
  34     m_inputDelayTimer->setSingleShot(true);
  35     connect( m_inputDelayTimer, SIGNAL( timeout() ),
  36              this, SLOT( startSearch() ) );
  37
  38     connect(this, SIGNAL( textChanged(const QString &) ), this, SLOT( slotTextChanged(const QString &) ));
  39     connect(document, SIGNAL( searchFinished(int, Okular::Document::SearchStatus) ), this, SLOT( searchFinished(int, Okular::Document::SearchStatus) ));
  40 }
  41
  42 void SearchLineEdit::clearText()
  43 {
  44     clear();
  45 }
  46
  47 void SearchLineEdit::setSearchCaseSensitivity( Qt::CaseSensitivity cs )
  48 {
  49     m_caseSensitivity = cs;
  50     m_changed = true;
  51 }
  52
  53 void SearchLineEdit::setSearchMinimumLength( int length )
  54 {
  55     m_minLength = length;
  56     m_changed = true;
  57 }
  58
  59 void SearchLineEdit::setSearchType( Okular::Document::SearchType type )
  60 {
  61     if ( type == m_searchType )
  62         return;
  63
  64     m_searchType = type;
  65     m_changed = ( m_searchType != Okular::Document::NextMatch && m_searchType != Okular::Document::PreviousMatch );
  66 }
  67
  68 void SearchLineEdit::setSearchId( int id )
  69 {
  70     m_id = id;
  71     m_changed = true;
  72 }
  73
  74 void SearchLineEdit::setSearchColor( const QColor &color )
  75 {
  76     m_color = color;
  77     m_changed = true;
  78 }
  79
  80 void SearchLineEdit::setSearchMoveViewport( bool move )
  81 {
  82     m_moveViewport = move;
  83 }
  84
  85 void SearchLineEdit::setSearchFromStart( bool fromStart )
  86 {
  87     m_fromStart = fromStart;
  88 }
  89
  90 void SearchLineEdit::restartSearch()
  91 {
  92     m_inputDelayTimer->stop();
  93     m_inputDelayTimer->start( 500 );
  94     m_changed = true;
  95 }
  96
  97 void SearchLineEdit::findNext()
  98 {
  99     if ( m_id == -1 || m_searchType != Okular::Document::NextMatch )
 100         return;
 101
 102     if ( !m_changed )
 103     {
 104         emit searchStarted();
 105         m_document->continueSearch( m_id, m_searchType );
 106     }
 107     else
 108         startSearch();
 109 }
 110
 111 void SearchLineEdit::findPrev()
 112 {
 113     if ( m_id == -1 || m_searchType != Okular::Document::PreviousMatch )
 114         return;
 115
 116     if ( !m_changed )
 117     {
 118         emit searchStarted();
 119         m_document->continueSearch( m_id, m_searchType );
 120     }
 121     else
 122         startSearch();
 123 }
 124
 125 void SearchLineEdit::slotTextChanged( const QString & text )
 126 {
 127     QPalette pal = palette();
 128     const int textLength = text.length();
 129     if ( textLength > 0 && textLength < m_minLength )
 130     {
 131         const KColorScheme scheme( QPalette::Active, KColorScheme::View );
 132         pal.setBrush( QPalette::Base, scheme.background( KColorScheme::NegativeBackground ) );
 133         pal.setBrush( QPalette::Text, scheme.foreground( KColorScheme::NegativeText ) );
 134     }
 135     else
 136     {
 137         const QPalette qAppPalette = QApplication::palette();
 138         pal.setColor( QPalette::Base, qAppPalette.color( QPalette::Base ) );
 139         pal.setColor( QPalette::Text, qAppPalette.color( QPalette::Text ) );
 140     }
 141     setPalette( pal );
 142     restartSearch();
 143 }
 144
 145 void SearchLineEdit::startSearch()
 146 {
 147     if ( m_id == -1 || !m_color.isValid() )
 148         return;
 149
 150     if ( m_changed && ( m_searchType == Okular::Document::NextMatch || m_searchType == Okular::Document::PreviousMatch ) )
 151     {
 152         m_document->resetSearch( m_id );
 153     }
 154     m_changed = false;
 155     // search text if have more than 3 chars or else clear search
 156     QString thistext = text();
 157     if ( thistext.length() >= qMax( m_minLength, 1 ) )
 158     {
 159         emit searchStarted();
 160         m_document->searchText( m_id, thistext, m_fromStart, m_caseSensitivity,
 161                                 m_searchType, m_moveViewport, m_color );
 162     }
 163     else
 164         m_document->resetSearch( m_id );
 165 }
 166
 167 void SearchLineEdit::searchFinished( int id, Okular::Document::SearchStatus endStatus )
 168 {
 169     // ignore the searches not started by this search edit
 170     if ( id != m_id )
 171         return;
 172
 173     // if not found, use warning colors
 174     if ( endStatus == Okular::Document::NoMatchFound )
 175     {
 176         QPalette pal = palette();
 177         const KColorScheme scheme( QPalette::Active, KColorScheme::View );
 178         pal.setBrush( QPalette::Base, scheme.background( KColorScheme::NegativeBackground ) );
 179         pal.setBrush( QPalette::Text, scheme.foreground( KColorScheme::NegativeText ) );
 180         setPalette( pal );
 181     }
 182     else
 183     {
 184         QPalette pal = palette();
 185         const QPalette qAppPalette = QApplication::palette();
 186         pal.setColor( QPalette::Base, qAppPalette.color( QPalette::Base ) );
 187         pal.setColor( QPalette::Text, qAppPalette.color( QPalette::Text ) );
 188         setPalette( pal );
 189     }
 190
 191     emit searchStopped();
 192 }
 193
 194
 195 SearchLineWidget::SearchLineWidget( QWidget * parent, Okular::Document * document )
 196     : QWidget( parent )
 197 {
 198     QHBoxLayout *layout = new QHBoxLayout( this );
 199     layout->setMargin( 0 );
 200
 201     m_edit = new SearchLineEdit( this, document );
 202     layout->addWidget( m_edit );
 203
 204     m_anim = new AnimatedWidget( "process-working", this );
 205     m_anim->setFixedSize( 22, 22 );
 206     layout->addWidget( m_anim );
 207
 208     m_timer = new QTimer( this );
 209     m_timer->setSingleShot( true );
 210     connect( m_timer, SIGNAL( timeout() ), m_anim, SLOT( start() ) );
 211
 212     connect( m_edit, SIGNAL( searchStarted() ), this, SLOT( slotSearchStarted() ) );
 213     connect( m_edit, SIGNAL( searchStopped() ), this, SLOT( slotSearchStopped() ) );
 214 }
 215
 216 SearchLineEdit* SearchLineWidget::lineEdit() const
 217 {
 218     return m_edit;
 219 }
 220
 221 void SearchLineWidget::slotSearchStarted()
 222 {
 223     m_timer->start( 100 );
 224 }
 225
 226 void SearchLineWidget::slotSearchStopped()
 227 {
 228     m_timer->stop();
 229     m_anim->stop();
 230 }
 231
 232 #include "searchlineedit.moc"