okular/ui/presentationsearchbar.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2007 by Pino Toscano <pino@kde.org>                     *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, or     *
   7  *   (at your option) any later version.                                   *
   8  ***************************************************************************/
   9
  10 #include "presentationsearchbar.h"
  11
  12 #include <qevent.h>
  13 #include <qlayout.h>
  14 #include <qstyle.h>
  15 #include <qstyleoption.h>
  16 #include <qstylepainter.h>
  17 #include <qtoolbutton.h>
  18
  19 #include <kicon.h>
  20 #include <klocale.h>
  21 #include <kpushbutton.h>
  22
  23 #include "searchlineedit.h"
  24
  25 #define SNAP_DELTA 15
  26
  27 class HandleDrag
  28     : public QWidget
  29 {
  30     public:
  31         HandleDrag( QWidget *parent = 0 )
  32             : QWidget( parent )
  33         {
  34             setCursor( Qt::SizeAllCursor );
  35             setFixedWidth( style()->pixelMetric( QStyle::PM_ToolBarHandleExtent ) );
  36             installEventFilter( parent );
  37         }
  38
  39         void paintEvent( QPaintEvent * )
  40         {
  41             QStyleOption opt;
  42             opt.initFrom( this );
  43             opt.state |= QStyle::State_Horizontal;
  44             QStylePainter p( this );
  45             p.drawPrimitive( QStyle::PE_IndicatorToolBarHandle, opt );
  46         }
  47 };
  48
  49
  50 PresentationSearchBar::PresentationSearchBar( Okular::Document *document, QWidget *anchor, QWidget *parent )
  51     : QWidget( parent ), m_anchor( anchor ), m_snapped( true )
  52 {
  53     setAutoFillBackground( true );
  54
  55     QHBoxLayout * lay = new QHBoxLayout( this );
  56     lay->setMargin( 0 );
  57
  58     m_handle = new HandleDrag( this );
  59     lay->addWidget( m_handle );
  60
  61     QToolButton * closeBtn = new QToolButton( this );
  62     closeBtn->setIcon( KIcon( "dialog-close" ) );
  63     closeBtn->setIconSize( QSize( 24, 24 ) );
  64     closeBtn->setToolTip( i18n( "Close" ) );
  65     closeBtn->setAutoRaise( true );
  66     lay->addWidget( closeBtn );
  67
  68     m_search = new SearchLineEdit( this, document );
  69     m_search->setClearButtonShown( true );
  70     m_search->setSearchCaseSensitivity( Qt::CaseInsensitive );
  71     m_search->setSearchMinimumLength( 0 );
  72     m_search->setSearchType( Okular::Document::NextMatch );
  73     m_search->setSearchId( PRESENTATION_SEARCH_ID );
  74     m_search->setSearchColor( qRgb( 255, 255, 64 ) );
  75     m_search->setSearchMoveViewport( true );
  76     lay->addWidget( m_search );
  77
  78     KPushButton * findNextBtn = new KPushButton( KIcon( "go-down-search" ), i18n( "Find Next" ), this );
  79     lay->addWidget( findNextBtn );
  80
  81     m_anchor->installEventFilter( this );
  82
  83     connect( closeBtn, SIGNAL( clicked() ), this, SLOT( close() ) );
  84     connect( findNextBtn, SIGNAL( clicked() ), m_search, SLOT( findNext() ) );
  85 }
  86
  87 PresentationSearchBar::~PresentationSearchBar()
  88 {
  89 }
  90
  91 void PresentationSearchBar::forceSnap()
  92 {
  93     m_point = QPoint( m_anchor->width() / 2, m_anchor->height() );
  94     m_snapped = true;
  95     move( m_point.x() - width() / 2, m_point.y() - height() );
  96 }
  97
  98 void PresentationSearchBar::focusOnSearchEdit()
  99 {
 100     m_search->setFocus();
 101 }
 102
 103 void PresentationSearchBar::resizeEvent( QResizeEvent * )
 104 {
 105     // if in snap mode, then force the snap and place ourselves correctly again
 106     if ( m_snapped )
 107         forceSnap();
 108 }
 109
 110 bool PresentationSearchBar::eventFilter( QObject *obj, QEvent *e )
 111 {
 112     if ( obj == m_handle &&
 113          ( e->type() == QEvent::MouseButtonPress || e->type() == QEvent::MouseButtonRelease || e->type() == QEvent::MouseMove ) )
 114     {
 115         QMouseEvent *me = (QMouseEvent*)e;
 116         if ( e->type() == QEvent::MouseButtonPress )
 117         {
 118             m_drag = m_handle->mapTo( this, me->pos() );
 119         }
 120         else if ( e->type() == QEvent::MouseButtonRelease )
 121         {
 122             m_drag = QPoint();
 123         }
 124         else if ( e->type() == QEvent::MouseMove )
 125         {
 126             QPoint snapdelta( width() / 2, height() );
 127             QPoint delta = m_handle->mapTo( this, me->pos() ) - m_drag;
 128             QPoint newpostemp = pos() + delta;
 129             QPoint tmp = newpostemp + snapdelta - m_point;
 130             QPoint newpos = abs( tmp.x() ) < SNAP_DELTA && abs( tmp.y() ) < SNAP_DELTA ? m_point - snapdelta : newpostemp;
 131             m_snapped = newpos == ( m_point - snapdelta );
 132             move( newpos );
 133         }
 134         return true;
 135     }
 136     if ( obj == m_anchor && e->type() == QEvent::Resize )
 137     {
 138         m_point = QPoint( m_anchor->width() / 2, m_anchor->height() );
 139
 140         if ( m_snapped )
 141             move( m_point.x() - width() / 2, m_point.y() - height() );
 142     }
 143
 144     return false;
 145 }
 146
 147 #include "presentationsearchbar.moc"