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437 lines
13 KiB
437 lines
13 KiB
/***************************************************************************
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* Copyright (C) 2005 by Enrico Ros <eros.kde@email.it> *
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* Copyright (C) 2006 by Albert Astals Cid <aacid@kde.org> *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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***************************************************************************/
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// qt / kde includes
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#include <tqapplication.h>
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#include <tqpushbutton.h>
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#include <tqlabel.h>
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#include <tqlineedit.h>
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#include <tqlayout.h>
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#include <tqvalidator.h>
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#include <tqpainter.h>
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#include <kiconloader.h>
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#include <kaccelmanager.h>
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#include <tdeversion.h>
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// local includes
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#include "core/document.h"
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#include "minibar.h"
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// [private widget] show progress
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class ProgressWidget : public TQWidget
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{
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public:
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ProgressWidget( MiniBar * parent );
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void setProgress( float percentage );
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protected:
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void mouseMoveEvent( TQMouseEvent * e );
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void mousePressEvent( TQMouseEvent * e );
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void wheelEvent( TQWheelEvent * e );
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void paintEvent( TQPaintEvent * e );
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private:
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MiniBar * m_miniBar;
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float m_progressPercentage;
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};
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// [private widget] lineEdit for entering/validating page numbers
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class PagesEdit : public TQLineEdit
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{
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public:
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PagesEdit( MiniBar * parent );
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void setPagesNumber( int pages );
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void setText( const TQString & );
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protected:
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void focusInEvent( TQFocusEvent * e );
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void focusOutEvent( TQFocusEvent * e );
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void mousePressEvent( TQMouseEvent * e );
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void wheelEvent( TQWheelEvent * e );
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private:
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MiniBar * m_miniBar;
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bool m_eatClick;
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TQString backString;
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TQIntValidator * m_validator;
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};
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// [private widget] a flat qpushbutton that enlights on hover
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class HoverButton : public TQPushButton
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{
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public:
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HoverButton( TQWidget * parent );
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protected:
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void paintEvent( TQPaintEvent * e );
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void enterEvent( TQPaintEvent * e );
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void leaveEvent( TQPaintEvent * e );
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};
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/** MiniBar **/
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MiniBar::MiniBar( TQWidget * parent, KPDFDocument * document )
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: TQFrame( parent, "miniBar" ), m_document( document ),
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m_currentPage( -1 )
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{
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// left spacer
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TQHBoxLayout * horLayout = new TQHBoxLayout( this );
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TQSpacerItem * spacerL = new TQSpacerItem( 20, 10, TQSizePolicy::Expanding );
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horLayout->addItem( spacerL );
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// central 2r by 3c grid layout that contains all components
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TQGridLayout * gridLayout = new TQGridLayout( 0, 3,5, 2,1 );
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// top spacer 6x6 px
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// TQSpacerItem * spacerTop = new TQSpacerItem( 6, 6, TQSizePolicy::Fixed, TQSizePolicy::Fixed );
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// gridLayout->addMultiCell( spacerTop, 0, 0, 0, 4 );
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// center progress widget
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m_progressWidget = new ProgressWidget( this );
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gridLayout->addMultiCellWidget( m_progressWidget, 0, 0, 0, 4 );
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// bottom: left prev_page button
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m_prevButton = new HoverButton( this );
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m_prevButton->setIconSet( SmallIconSet( TQApplication::reverseLayout() ? "1rightarrow" : "1leftarrow" ) );
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gridLayout->addWidget( m_prevButton, 1, 0 );
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// bottom: left lineEdit (current page box)
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m_pagesEdit = new PagesEdit( this );
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gridLayout->addWidget( m_pagesEdit, 1, 1 );
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// bottom: central '/' label
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gridLayout->addWidget( new TQLabel( "/", this ), 1, 2 );
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// bottom: right button
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m_pagesButton = new HoverButton( this );
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gridLayout->addWidget( m_pagesButton, 1, 3 );
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// bottom: right next_page button
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m_nextButton = new HoverButton( this );
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m_nextButton->setIconSet( SmallIconSet( TQApplication::reverseLayout() ? "1leftarrow" : "1rightarrow" ) );
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gridLayout->addWidget( m_nextButton, 1, 4 );
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horLayout->addLayout( gridLayout );
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// right spacer
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TQSpacerItem * spacerR = new TQSpacerItem( 20, 10, TQSizePolicy::Expanding );
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horLayout->addItem( spacerR );
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// customize own look
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setFrameStyle( TQFrame::StyledPanel | TQFrame::Sunken );
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// connect signals from child widgets to internal handlers / signals bouncers
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connect( m_pagesEdit, TQT_SIGNAL( returnPressed() ), this, TQT_SLOT( slotChangePage() ) );
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connect( m_pagesButton, TQT_SIGNAL( clicked() ), this, TQT_SIGNAL( gotoPage() ) );
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connect( m_prevButton, TQT_SIGNAL( clicked() ), this, TQT_SIGNAL( prevPage() ) );
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connect( m_nextButton, TQT_SIGNAL( clicked() ), this, TQT_SIGNAL( nextPage() ) );
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// widget starts hidden (will be shown after opening a document)
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parent->hide();
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}
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MiniBar::~MiniBar()
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{
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m_document->removeObserver( this );
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}
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void MiniBar::notifySetup( const TQValueVector< KPDFPage * > & pageVector, bool changed )
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{
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// only process data when document changes
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if ( !changed )
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return;
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// if document is closed or has no pages, hide widget
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int pages = pageVector.count();
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if ( pages < 1 )
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{
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m_currentPage = -1;
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TQT_TQWIDGET( parent() )->hide();
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return;
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}
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// resize width of widgets
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int numberWidth = 10 + fontMetrics().width( TQString::number( pages ) );
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m_pagesEdit->setMinimumWidth( numberWidth );
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m_pagesEdit->setMaximumWidth( 2 * numberWidth );
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m_pagesButton->setMinimumWidth( numberWidth );
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m_pagesButton->setMaximumWidth( 2 * numberWidth );
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// resize height of widgets
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int fixedHeight = fontMetrics().height() + 2;
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if ( fixedHeight < 18 )
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fixedHeight = 18;
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m_pagesEdit->setFixedHeight( fixedHeight );
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m_pagesButton->setFixedHeight( fixedHeight );
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m_prevButton->setFixedHeight( fixedHeight );
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m_nextButton->setFixedHeight( fixedHeight );
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// update child widgets
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m_pagesEdit->setPagesNumber( pages );
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m_pagesButton->setText( TQString::number( pages ) );
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m_prevButton->setEnabled( false );
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m_nextButton->setEnabled( false );
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TQT_TQWIDGET( parent() )->show();
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}
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void MiniBar::notifyViewportChanged( bool /*smoothMove*/ )
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{
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// get current page number
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int page = m_document->viewport().pageNumber;
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int pages = m_document->pages();
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// if the document is opened and page is changed
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if ( page != m_currentPage && pages > 0 )
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{
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// update percentage
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m_currentPage = page;
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float percentage = pages < 2 ? 1.0 : (float)page / (float)(pages - 1);
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m_progressWidget->setProgress( percentage );
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// update prev/next button state
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m_prevButton->setEnabled( page > 0 );
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m_nextButton->setEnabled( page < ( pages - 1 ) );
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// update text on widgets
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m_pagesEdit->setText( TQString::number( page + 1 ) );
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}
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}
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void MiniBar::resizeEvent( TQResizeEvent * e )
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{
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// auto-hide 'prev' and 'next' buttons if not enough space
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const TQSize & myHint = minimumSizeHint();
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bool shown = m_prevButton->isVisible() && m_nextButton->isVisible();
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if ( shown && e->size().width() < myHint.width() )
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{
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m_prevButton->hide();
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m_nextButton->hide();
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updateGeometry();
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}
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else if ( !shown )
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{
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int histeresis = m_prevButton->sizeHint().width() * 2 + 2;
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if ( e->size().width() > (myHint.width() + histeresis) )
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{
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m_prevButton->show();
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m_nextButton->show();
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updateGeometry();
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}
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}
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}
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void MiniBar::slotChangePage()
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{
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// get text from the lineEdit
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TQString pageNumber = m_pagesEdit->text();
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// convert it to page number and go to that page
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bool ok;
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int number = pageNumber.toInt( &ok ) - 1;
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if ( ok && number >= 0 && number < (int)m_document->pages() &&
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number != m_currentPage )
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{
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m_document->setViewportPage( number );
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m_pagesEdit->clearFocus();
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}
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}
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void MiniBar::slotGotoNormalizedPage( float index )
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{
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// figure out page number and go to that page
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int number = (int)( index * (float)m_document->pages() );
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if ( number >= 0 && number < (int)m_document->pages() &&
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number != m_currentPage )
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m_document->setViewportPage( number );
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}
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void MiniBar::slotEmitNextPage()
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{
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// emit signal
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nextPage();
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}
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void MiniBar::slotEmitPrevPage()
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{
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// emit signal
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prevPage();
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}
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/** ProgressWidget **/
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ProgressWidget::ProgressWidget( MiniBar * parent )
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: TQWidget( parent, "progress", WNoAutoErase ),
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m_miniBar( parent ), m_progressPercentage( -1 )
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{
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setFixedHeight( 4 );
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setMouseTracking( true );
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}
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void ProgressWidget::setProgress( float percentage )
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{
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m_progressPercentage = percentage;
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update();
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}
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void ProgressWidget::mouseMoveEvent( TQMouseEvent * e )
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{
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if ( e->state() == Qt::LeftButton && width() > 0 )
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m_miniBar->slotGotoNormalizedPage( (float)( TQApplication::reverseLayout() ? width() - e->x() : e->x() ) / (float)width() );
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}
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void ProgressWidget::mousePressEvent( TQMouseEvent * e )
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{
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if ( e->button() == Qt::LeftButton && width() > 0 )
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m_miniBar->slotGotoNormalizedPage( (float)( TQApplication::reverseLayout() ? width() - e->x() : e->x() ) / (float)width() );
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}
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void ProgressWidget::wheelEvent( TQWheelEvent * e )
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{
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if ( e->delta() > 0 )
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m_miniBar->slotEmitNextPage();
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else
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m_miniBar->slotEmitPrevPage();
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}
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void ProgressWidget::paintEvent( TQPaintEvent * e )
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{
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if ( m_progressPercentage < 0.0 )
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return;
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// find out the 'fill' and the 'clear' rectangles
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int w = width(),
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h = height(),
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l = (int)( (float)w * m_progressPercentage );
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TQRect cRect = ( TQApplication::reverseLayout() ? TQRect( 0, 0, w - l, h ) : TQRect( l, 0, w - l, h ) ).intersect( e->rect() );
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TQRect fRect = ( TQApplication::reverseLayout() ? TQRect( w - l, 0, l, h ) : TQRect( 0, 0, l, h ) ).intersect( e->rect() );
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// paint rects and a separator line
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TQPainter p( this );
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if ( cRect.isValid() )
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p.fillRect( cRect, tqpalette().active().highlightedText() );
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if ( fRect.isValid() )
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p.fillRect( fRect, tqpalette().active().highlight() );
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if ( l && l != w )
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{
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p.setPen( tqpalette().active().highlight().dark( 120 ) );
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int delta = TQApplication::reverseLayout() ? w - l : l;
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p.drawLine( delta, 0, delta, h );
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}
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// draw a frame-like outline
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//p.setPen( palette().active().mid() );
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//p.drawRect( 0,0, w, h );
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}
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/** PagesEdit **/
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PagesEdit::PagesEdit( MiniBar * parent )
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: TQLineEdit( parent ), m_miniBar( parent ), m_eatClick( false )
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{
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// customize look
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setFrameShadow( TQFrame::Raised );
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focusOutEvent( 0 );
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// use an integer validator
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m_validator = new TQIntValidator( 1, 1, TQT_TQOBJECT(this) );
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setValidator( m_validator );
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// customize text properties
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setAlignment( TQt::AlignCenter );
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setMaxLength( 4 );
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}
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void PagesEdit::setPagesNumber( int pages )
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{
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m_validator->setTop( pages );
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}
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void PagesEdit::setText( const TQString & text )
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{
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// store a copy of the string
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backString = text;
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// call default handler if hasn't focus
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if ( !hasFocus() )
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TQLineEdit::setText( text );
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}
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void PagesEdit::focusInEvent( TQFocusEvent * e )
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{
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// select all text
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selectAll();
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if ( e->reason() == TQFocusEvent::Mouse )
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m_eatClick = true;
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// change background color to the default 'edit' color
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setLineWidth( 2 );
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setPaletteBackgroundColor( TQt::white );
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// call default handler
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TQLineEdit::focusInEvent( e );
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}
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void PagesEdit::focusOutEvent( TQFocusEvent * e )
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{
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// change background color to a dark tone
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setLineWidth( 1 );
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setPaletteBackgroundColor( palette().active().background().light( 105 ) );
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// restore text
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TQLineEdit::setText( backString );
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// call default handler
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TQLineEdit::focusOutEvent( e );
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}
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void PagesEdit::mousePressEvent( TQMouseEvent * e )
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{
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// if this click got the focus in, don't process the event
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if ( !m_eatClick )
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TQLineEdit::mousePressEvent( e );
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m_eatClick = false;
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}
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void PagesEdit::wheelEvent( TQWheelEvent * e )
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{
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if ( e->delta() > 0 )
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m_miniBar->slotEmitNextPage();
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else
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m_miniBar->slotEmitPrevPage();
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}
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/** HoverButton **/
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HoverButton::HoverButton( TQWidget * parent )
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: TQPushButton( parent )
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{
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setMouseTracking( true );
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#if KDE_IS_VERSION(3,3,90)
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KAcceleratorManager::setNoAccel( this );
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#endif
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}
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void HoverButton::enterEvent( TQPaintEvent * e )
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{
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update();
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TQPushButton::enterEvent( e );
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}
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void HoverButton::leaveEvent( TQPaintEvent * e )
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{
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update();
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TQPushButton::leaveEvent( e );
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}
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void HoverButton::paintEvent( TQPaintEvent * e )
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{
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if ( hasMouse() )
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{
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TQPushButton::paintEvent( e );
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}
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else
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{
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TQPainter p( this );
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p.fillRect(e->rect(), parentWidget() ? parentWidget()->palette().brush(TQPalette::Active, TQColorGroup::Background) : paletteBackgroundColor());
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drawButtonLabel( &p );
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}
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}
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#include "minibar.moc"
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