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Rename Timeline to TimeLineWidget
This commit is contained in:
Lukas W
397
src/gui/TimeLineWidget.cpp
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397
src/gui/TimeLineWidget.cpp
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/*
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* TimeLineWidget.cpp - class timeLine, representing a time-line with position marker
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*
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* Copyright (c) 2004-2014 Tobias Doerffel <tobydox/at/users.sourceforge.net>
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*
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* This file is part of LMMS - http://lmms.io
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program (see COPYING); if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA.
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*
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*/
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#include <QDomElement>
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#include <QTimer>
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#include <QApplication>
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#include <QLayout>
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#include <QMouseEvent>
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#include <QPainter>
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#include <QToolBar>
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#include "TimeLineWidget.h"
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#include "embed.h"
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#include "Engine.h"
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#include "templates.h"
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#include "NStateButton.h"
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#include "MainWindow.h"
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#include "TextFloat.h"
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#if QT_VERSION < 0x040800
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#define MiddleButton MidButton
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#endif
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QPixmap * TimeLineWidget::s_timeLinePixmap = NULL;
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QPixmap * TimeLineWidget::s_posMarkerPixmap = NULL;
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QPixmap * TimeLineWidget::s_loopPointBeginPixmap = NULL;
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QPixmap * TimeLineWidget::s_loopPointEndPixmap = NULL;
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TimeLineWidget::TimeLineWidget( const int _xoff, const int _yoff, const float _ppt,
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Song::playPos & _pos, const MidiTime & _begin,
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QWidget * _parent ) :
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QWidget( _parent ),
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m_autoScroll( AutoScrollEnabled ),
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m_loopPoints( LoopPointsDisabled ),
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m_behaviourAtStop( BackToZero ),
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m_changedPosition( true ),
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m_xOffset( _xoff ),
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m_posMarkerX( 0 ),
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m_ppt( _ppt ),
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m_pos( _pos ),
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m_begin( _begin ),
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m_savedPos( -1 ),
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m_hint( NULL ),
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m_action( NoAction ),
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m_moveXOff( 0 )
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{
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m_loopPos[0] = 0;
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m_loopPos[1] = DefaultTicksPerTact;
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if( s_timeLinePixmap == NULL )
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{
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s_timeLinePixmap = new QPixmap( embed::getIconPixmap(
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"timeline" ) );
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}
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if( s_posMarkerPixmap == NULL )
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{
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s_posMarkerPixmap = new QPixmap( embed::getIconPixmap(
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"playpos_marker" ) );
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}
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if( s_loopPointBeginPixmap == NULL )
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{
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s_loopPointBeginPixmap = new QPixmap( embed::getIconPixmap(
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"loop_point_b" ) );
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}
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if( s_loopPointEndPixmap == NULL )
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{
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s_loopPointEndPixmap = new QPixmap( embed::getIconPixmap(
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"loop_point_e" ) );
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}
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setAttribute( Qt::WA_OpaquePaintEvent, true );
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move( 0, _yoff );
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setFixedHeight( s_timeLinePixmap->height() );
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m_xOffset -= s_posMarkerPixmap->width() / 2;
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m_pos.m_timeLine = this;
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QTimer * update_timer = new QTimer( this );
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connect( update_timer, SIGNAL( timeout() ),
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this, SLOT( updatePosition() ) );
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update_timer->start( 50 );
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}
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TimeLineWidget::~TimeLineWidget()
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{
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if( Engine::songEditor() )
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{
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m_pos.m_timeLine = NULL;
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}
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delete m_hint;
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}
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void TimeLineWidget::addToolButtons( QToolBar * _tool_bar )
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{
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NStateButton * autoScroll = new NStateButton( _tool_bar );
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autoScroll->setGeneralToolTip( tr( "Enable/disable auto-scrolling" ) );
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autoScroll->addState( embed::getIconPixmap( "autoscroll_on" ) );
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autoScroll->addState( embed::getIconPixmap( "autoscroll_off" ) );
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connect( autoScroll, SIGNAL( changedState( int ) ), this,
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SLOT( toggleAutoScroll( int ) ) );
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NStateButton * loopPoints = new NStateButton( _tool_bar );
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loopPoints->setGeneralToolTip( tr( "Enable/disable loop-points" ) );
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loopPoints->addState( embed::getIconPixmap( "loop_points_off" ) );
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loopPoints->addState( embed::getIconPixmap( "loop_points_on" ) );
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connect( loopPoints, SIGNAL( changedState( int ) ), this,
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SLOT( toggleLoopPoints( int ) ) );
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connect( this, SIGNAL( loopPointStateLoaded( int ) ), loopPoints,
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SLOT( changeState( int ) ) );
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NStateButton * behaviourAtStop = new NStateButton( _tool_bar );
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behaviourAtStop->addState( embed::getIconPixmap( "back_to_zero" ),
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tr( "After stopping go back to begin" )
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);
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behaviourAtStop->addState( embed::getIconPixmap( "back_to_start" ),
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tr( "After stopping go back to "
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"position at which playing was "
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"started" ) );
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behaviourAtStop->addState( embed::getIconPixmap( "keep_stop_position" ),
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tr( "After stopping keep position" ) );
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connect( behaviourAtStop, SIGNAL( changedState( int ) ), this,
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SLOT( toggleBehaviourAtStop( int ) ) );
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_tool_bar->addWidget( autoScroll );
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_tool_bar->addWidget( loopPoints );
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_tool_bar->addWidget( behaviourAtStop );
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}
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void TimeLineWidget::saveSettings( QDomDocument & _doc, QDomElement & _this )
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{
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_this.setAttribute( "lp0pos", (int) loopBegin() );
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_this.setAttribute( "lp1pos", (int) loopEnd() );
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_this.setAttribute( "lpstate", m_loopPoints );
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}
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void TimeLineWidget::loadSettings( const QDomElement & _this )
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{
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m_loopPos[0] = _this.attribute( "lp0pos" ).toInt();
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m_loopPos[1] = _this.attribute( "lp1pos" ).toInt();
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m_loopPoints = static_cast<LoopPointStates>(
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_this.attribute( "lpstate" ).toInt() );
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update();
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emit loopPointStateLoaded( m_loopPoints );
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}
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void TimeLineWidget::updatePosition( const MidiTime & )
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{
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const int new_x = markerX( m_pos );
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if( new_x != m_posMarkerX )
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{
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m_posMarkerX = new_x;
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m_changedPosition = true;
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emit positionChanged( m_pos );
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update();
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}
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}
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void TimeLineWidget::toggleAutoScroll( int _n )
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{
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m_autoScroll = static_cast<AutoScrollStates>( _n );
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}
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void TimeLineWidget::toggleLoopPoints( int _n )
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{
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m_loopPoints = static_cast<LoopPointStates>( _n );
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update();
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}
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void TimeLineWidget::toggleBehaviourAtStop( int _n )
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{
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m_behaviourAtStop = static_cast<BehaviourAtStopStates>( _n );
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}
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void TimeLineWidget::paintEvent( QPaintEvent * )
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{
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QPainter p( this );
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QColor bg_color = QApplication::palette().color( QPalette::Active,
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QPalette::Background );
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QLinearGradient g( 0, 0, 0, height() );
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g.setColorAt( 0, bg_color.lighter( 150 ) );
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g.setColorAt( 1, bg_color.darker( 150 ) );
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p.fillRect( 0, 0, width(), height(), g );
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p.setClipRect( m_xOffset, 0, width() - m_xOffset, height() );
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p.setPen( QColor( 0, 0, 0 ) );
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p.setOpacity( loopPointsEnabled() ? 0.9 : 0.2 );
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p.drawPixmap( markerX( loopBegin() )+2, 2, *s_loopPointBeginPixmap );
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p.drawPixmap( markerX( loopEnd() )+2, 2, *s_loopPointEndPixmap );
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p.setOpacity( 1.0 );
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tact_t tact_num = m_begin.getTact();
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int x = m_xOffset + s_posMarkerPixmap->width() / 2 -
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( ( static_cast<int>( m_begin * m_ppt ) / MidiTime::ticksPerTact() ) % static_cast<int>( m_ppt ) );
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p.setPen( QColor( 192, 192, 192 ) );
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for( int i = 0; x + i * m_ppt < width(); ++i )
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{
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const int cx = x + qRound( i * m_ppt );
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p.drawLine( cx, 5, cx, height() - 6 );
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++tact_num;
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if( ( tact_num - 1 ) %
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qMax( 1, qRound( 1.0f / 3.0f *
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MidiTime::ticksPerTact() / m_ppt ) ) == 0 )
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{
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const QString s = QString::number( tact_num );
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p.drawText( cx + qRound( ( m_ppt - p.fontMetrics().
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width( s ) ) / 2 ),
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height() - p.fontMetrics().height() / 2, s );
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}
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}
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p.setOpacity( 0.6 );
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p.drawPixmap( m_posMarkerX, height() - s_posMarkerPixmap->height(),
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*s_posMarkerPixmap );
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}
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void TimeLineWidget::mousePressEvent( QMouseEvent* event )
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{
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if( event->x() < m_xOffset )
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{
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return;
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}
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if( event->button() == Qt::LeftButton )
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{
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m_action = MovePositionMarker;
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if( event->x() - m_xOffset < s_posMarkerPixmap->width() )
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{
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m_moveXOff = event->x() - m_xOffset;
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}
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else
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{
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m_moveXOff = s_posMarkerPixmap->width() / 2;
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}
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}
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else if( event->button() == Qt::RightButton || event->button() == Qt::MiddleButton )
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{
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m_moveXOff = s_posMarkerPixmap->width() / 2;
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const MidiTime t = m_begin + static_cast<int>( event->x() * MidiTime::ticksPerTact() / m_ppt );
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if( m_loopPos[0] > m_loopPos[1] )
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{
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qSwap( m_loopPos[0], m_loopPos[1] );
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}
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if( ( event->modifiers() & Qt::ShiftModifier ) || event->button() == Qt::MiddleButton )
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{
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m_action = MoveLoopBegin;
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}
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else
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{
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m_action = MoveLoopEnd;
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}
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m_loopPos[( m_action == MoveLoopBegin ) ? 0 : 1] = t;
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}
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if( m_action == MoveLoopBegin )
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{
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delete m_hint;
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m_hint = TextFloat::displayMessage( tr( "Hint" ),
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tr( "Press <Ctrl> to disable magnetic loop points." ),
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embed::getIconPixmap( "hint" ), 0 );
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}
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else if( m_action == MoveLoopEnd )
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{
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delete m_hint;
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m_hint = TextFloat::displayMessage( tr( "Hint" ),
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tr( "Hold <Shift> to move the begin loop point; Press <Ctrl> to disable magnetic loop points." ),
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embed::getIconPixmap( "hint" ), 0 );
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}
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mouseMoveEvent( event );
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}
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void TimeLineWidget::mouseMoveEvent( QMouseEvent* event )
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{
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const MidiTime t = m_begin + static_cast<int>( qMax( event->x() - m_xOffset - m_moveXOff, 0 ) * MidiTime::ticksPerTact() / m_ppt );
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switch( m_action )
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{
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case MovePositionMarker:
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m_pos.setTicks( t.getTicks() );
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Engine::getSong()->setMilliSeconds(((((t.getTicks()))*60*1000/48)/Engine::getSong()->getTempo()));
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m_pos.setCurrentFrame( 0 );
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updatePosition();
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break;
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case MoveLoopBegin:
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case MoveLoopEnd:
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{
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const int i = m_action - MoveLoopBegin;
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if( event->modifiers() & Qt::ControlModifier )
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{
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// no ctrl-press-hint when having ctrl pressed
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delete m_hint;
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m_hint = NULL;
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m_loopPos[i] = t;
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}
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else
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{
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m_loopPos[i] = t.toNearestTact();
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}
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// Catch begin == end
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if( m_loopPos[0] == m_loopPos[1] )
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{
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// Note, swap 1 and 0 below and the behavior "skips" the other
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// marking instead of pushing it.
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if( m_action == MoveLoopBegin )
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m_loopPos[0] -= MidiTime::ticksPerTact();
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else
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m_loopPos[1] += MidiTime::ticksPerTact();
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}
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update();
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break;
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}
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default:
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break;
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}
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}
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void TimeLineWidget::mouseReleaseEvent( QMouseEvent* event )
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{
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delete m_hint;
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m_hint = NULL;
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m_action = NoAction;
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}
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