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055a795cb3
git-svn-id: https://lmms.svn.sf.net/svnroot/lmms/trunk/lmms@241 0778d3d1-df1d-0410-868b-ea421aaaa00d
365 lines
8.1 KiB
C++
365 lines
8.1 KiB
C++
#ifndef SINGLE_SOURCE_COMPILE
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/*
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* surround_area.cpp - a widget for setting position of a channel +
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* calculation of volume for each speaker
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*
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* Copyright (c) 2004-2006 Tobias Doerffel <tobydox/at/users.sourceforge.net>
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*
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* This file is part of Linux MultiMedia Studio - http://lmms.sourceforge.net
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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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*
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*/
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#include "qt3support.h"
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#ifdef QT4
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#include <QtGui/QApplication>
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#include <QtGui/QCursor>
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#include <QtGui/QLabel>
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#include <QtGui/QMenu>
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#include <QtGui/QMouseEvent>
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#include <QtGui/QPainter>
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#else
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#include <qapplication.h>
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#include <qlabel.h>
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#include <qpainter.h>
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#include <qpopupmenu.h>
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#include <qcursor.h>
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#include <qimage.h>
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#endif
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#include <math.h>
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#include "surround_area.h"
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#include "embed.h"
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#include "templates.h"
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#include "tooltip.h"
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const QPoint surroundArea::s_defaultSpeakerPositions[SURROUND_CHANNELS] =
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{
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QPoint( -SURROUND_AREA_SIZE, -SURROUND_AREA_SIZE ),
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QPoint( SURROUND_AREA_SIZE, -SURROUND_AREA_SIZE)
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#ifndef DISABLE_SURROUND
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,
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QPoint( -SURROUND_AREA_SIZE, SURROUND_AREA_SIZE ),
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QPoint( SURROUND_AREA_SIZE, SURROUND_AREA_SIZE )
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#endif
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} ;
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QPixmap * surroundArea::s_backgroundArtwork = NULL;
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surroundArea::surroundArea( QWidget * _parent, const QString & _name,
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engine * _engine, track * _track ) :
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QWidget( _parent
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#ifndef QT4
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, _name.ascii()
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#endif
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),
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m_sndSrcPos( QPoint() )
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{
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m_position_x = new knob( knobDark_28, NULL, tr ( "Surround area X" ),
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_engine, _track );
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m_position_x->setRange( -SURROUND_AREA_SIZE, SURROUND_AREA_SIZE, 1.0f );
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m_position_x->setInitValue( 0.0f );
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m_position_y = new knob( knobDark_28, NULL, tr ( "Surround area Y" ),
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_engine, _track );
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m_position_y->setRange( -SURROUND_AREA_SIZE, SURROUND_AREA_SIZE, 1.0f );
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m_position_y->setInitValue( 0.0f );
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connect( m_position_x, SIGNAL( valueChanged( float ) ), this,
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SLOT( updatePositionX( void ) ) );
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connect( m_position_y, SIGNAL( valueChanged( float ) ), this,
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SLOT( updatePositionY( void ) ) );
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if( s_backgroundArtwork == NULL )
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{
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s_backgroundArtwork = new QPixmap( embed::getIconPixmap(
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"surround_area" ) );
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}
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setFixedSize( s_backgroundArtwork->width(),
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s_backgroundArtwork->height() );
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#ifdef QT4
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setAccessibleName( _name );
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#else
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setBackgroundMode( Qt::NoBackground );
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#endif
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toolTip::add( this,
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tr( "click to where this channel should be audible" ) );
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}
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surroundArea::~surroundArea()
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{
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delete m_position_x;
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delete m_position_y;
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}
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volumeVector surroundArea::getVolumeVector( float _v_scale ) const
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{
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volumeVector v;
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for( Uint8 chnl = 0; chnl < SURROUND_CHANNELS; ++chnl )
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{
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v.vol[chnl] = getVolume( s_defaultSpeakerPositions[chnl],
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_v_scale );
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}
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return( v );
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}
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void surroundArea::setValue( const QPoint & _p )
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{
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if( tLimit( _p.x(), -SURROUND_AREA_SIZE, SURROUND_AREA_SIZE ) !=
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_p.x() ||
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tLimit( _p.y(), -SURROUND_AREA_SIZE, SURROUND_AREA_SIZE ) != _p.y() )
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{
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m_sndSrcPos = QPoint( 0, 0 );
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}
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else
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{
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m_sndSrcPos = _p;
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}
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update();
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}
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FASTCALL float surroundArea::getVolume( const QPoint & _speaker_pos,
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float _v_scale ) const
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{
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const int x = _speaker_pos.x() - m_sndSrcPos.x();
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const int y = _speaker_pos.y() - m_sndSrcPos.y();
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const float new_vol = 2.0f - sqrt( x*x + y*y ) *
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( 1.0f / SURROUND_AREA_SIZE );
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return( tLimit( new_vol, 0.0f, 1.0f ) * _v_scale );
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}
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void surroundArea::contextMenuEvent( QContextMenuEvent * )
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{
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// for the case, the user clicked right while pressing left mouse-
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// button, the context-menu appears while mouse-cursor is still hidden
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// and it isn't shown again until user does something which causes
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// an QApplication::restoreOverrideCursor()-call...
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mouseReleaseEvent( NULL );
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QMenu contextMenu( this );
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#ifdef QT4
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contextMenu.setTitle( accessibleName() );
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#else
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QLabel * caption = new QLabel( "<font color=white><b>" +
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QString( accessibleName() ) + "</b></font>", this );
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caption->setPaletteBackgroundColor( QColor( 0, 0, 192 ) );
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caption->setAlignment( Qt::AlignCenter );
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contextMenu.addAction( caption );
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#endif
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contextMenu.addAction( embed::getIconPixmap( "automation" ),
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tr( "Open &X in automation editor" ),
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m_position_x->getAutomationPattern(),
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SLOT( openInAutomationEditor() ) );
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contextMenu.addAction( embed::getIconPixmap( "automation" ),
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tr( "Open &Y in automation editor" ),
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m_position_y->getAutomationPattern(),
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SLOT( openInAutomationEditor() ) );
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contextMenu.exec( QCursor::pos() );
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}
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void surroundArea::paintEvent( QPaintEvent * )
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{
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#ifdef QT4
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QPainter p( this );
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if( s_backgroundArtwork->size() != size() )
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{
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p.drawPixmap( 0, 0, *s_backgroundArtwork );
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}
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else
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{
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p.drawPixmap( 0, 0, s_backgroundArtwork->scaled(
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width(), height(),
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Qt::IgnoreAspectRatio,
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Qt::SmoothTransformation ) );
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}
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#else
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QPixmap pm;
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if( s_backgroundArtwork->size() != size() )
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{
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pm.convertFromImage(
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s_backgroundArtwork->convertToImage().smoothScale(
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width(), height() ) );
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}
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else
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{
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pm = *s_backgroundArtwork;
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}
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QPainter p( &pm );
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#endif
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const int x = ( width() + m_sndSrcPos.x() * ( width() - 4 ) /
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SURROUND_AREA_SIZE ) / 2;
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const int y = ( height() + m_sndSrcPos.y() * ( height() - 4 ) /
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SURROUND_AREA_SIZE ) / 2;
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p.setPen( QColor( 64, 255, 64 ) );
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p.drawPoint( x, y - 1 );
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p.drawPoint( x - 1, y );
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p.drawPoint( x, y );
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p.drawPoint( x + 1, y );
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p.drawPoint( x, y + 1 );
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#ifndef QT4
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// blit drawn pixmap to actual widget
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bitBlt( this, rect().topLeft(), &pm );
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#endif
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}
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void surroundArea::mousePressEvent( QMouseEvent * _me )
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{
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if( _me->button() == Qt::RightButton )
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{
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return;
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}
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const int w = width();//s_backgroundArtwork->width();
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const int h = height();//s_backgroundArtwork->height();
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if( _me->x() > 1 && _me->x() < w-1 && _me->y() > 1 && _me->y() < h-1 )
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{
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m_sndSrcPos.setX( ( _me->x() * 2 - w ) * SURROUND_AREA_SIZE /
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( w - 4 ) );
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m_sndSrcPos.setY( ( _me->y() * 2 - h ) * SURROUND_AREA_SIZE /
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( h - 4 ) );
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update();
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if( _me->button() != Qt::NoButton )
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{
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QApplication::setOverrideCursor( Qt::BlankCursor );
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}
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}
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else
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{
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int x = tLimit( _me->x(), 2, w - 2 );
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int y = tLimit( _me->y(), 2, h - 2 );
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QCursor::setPos( mapToGlobal( QPoint( x, y ) ) );
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}
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m_position_x->setValue( m_sndSrcPos.x() );
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m_position_y->setValue( m_sndSrcPos.y() );
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emit valueChanged( m_sndSrcPos );
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}
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void surroundArea::mouseMoveEvent( QMouseEvent * _me )
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{
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mousePressEvent( _me );
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}
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void surroundArea::mouseReleaseEvent( QMouseEvent * )
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{
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QApplication::restoreOverrideCursor();
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}
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void surroundArea::updatePositionX( void )
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{
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m_sndSrcPos.setX( (int)roundf( m_position_x->value() ) );
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update();
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}
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void surroundArea::updatePositionY( void )
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{
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m_sndSrcPos.setY( (int)roundf( m_position_y->value() ) );
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update();
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}
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void FASTCALL surroundArea::saveSettings( QDomDocument & _doc,
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QDomElement & _this,
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const QString & _name )
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{
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m_position_x->saveSettings( _doc, _this, _name + "-x" );
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m_position_y->saveSettings( _doc, _this, _name + "-y" );
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}
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void FASTCALL surroundArea::loadSettings( const QDomElement & _this,
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const QString & _name )
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{
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if( _this.hasAttribute( _name ) )
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{
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int i = _this.attribute( _name ).toInt();
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setValue( QPoint( ( i & 0xFFFF ) - 2 * SURROUND_AREA_SIZE,
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( i >> 16 ) - 2 * SURROUND_AREA_SIZE) );
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m_position_x->setValue( m_sndSrcPos.x() );
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m_position_y->setValue( m_sndSrcPos.y() );
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}
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else
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{
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m_position_x->loadSettings( _this, _name + "-x" );
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m_position_y->loadSettings( _this, _name + "-y" );
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}
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}
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#include "surround_area.moc"
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#endif
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