steroEnhancer, Vibed, and separated Graph widget
git-svn-id: https://lmms.svn.sf.net/svnroot/lmms/branches/lmms-mv@699 0778d3d1-df1d-0410-868b-ea421aaaa00d
This commit is contained in:
Paul Giblock
@@ -871,9 +871,10 @@ void pianoRoll::mousePressEvent( QMouseEvent * _me )
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x -= WHITE_KEY_WIDTH;
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// get tact-64th in which the user clicked
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int pos_tact_64th = x * 64 / m_ppt +
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int pos_tact_64th = (x-1) * 64 / m_ppt +
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m_currentPosition;
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// get note-vector of current pattern
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const noteVector & notes = m_pattern->notes();
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@@ -939,7 +940,10 @@ void pianoRoll::mousePressEvent( QMouseEvent * _me )
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pattern::MelodyPattern );
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// then set new note
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midiTime note_pos( pos_tact_64th );
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// +32 to quanitize the note correctly when placing notes with
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// the mouse. We do this here instead of in note.quantized
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// because live notes should still be quantized at the half.
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midiTime note_pos( pos_tact_64th - (quantization() / 2) );
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midiTime note_len( newNoteLen() );
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note new_note( note_len, note_pos,
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478
src/widgets/graph.cpp
Normal file
478
src/widgets/graph.cpp
Normal file
@@ -0,0 +1,478 @@
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/*
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* graph.cpp - a QT widget for displaying and manipulating waveforms
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*
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* Copyright (c) 2006-2007 Andreas Brandmaier <andy/at/brandmaier/dot/de>
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* 2008 Paul Giblock <drfaygo/at/gmail/dot/com>
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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., 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 <QtGui/QPaintEvent>
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#include <QtGui/QFontMetrics>
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#include <QtGui/QPainter>
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#include "graph.h"
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#include "string_pair_drag.h"
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#include "sample_buffer.h"
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#include "oscillator.h"
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//#include <cstdlib>
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//#include <math.h>
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using namespace std;
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graph::graph( QWidget * _parent ) :
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QWidget( _parent ),
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/* TODO: size, background? */
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modelView( new graphModel( -1.0, 1.0, 128, NULL, NULL, TRUE ) )
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{
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m_mouseDown = false;
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resize( 132, 104 );
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setAcceptDrops( TRUE );
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graphModel * gModel = castModel<graphModel>();
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QObject::connect( gModel, SIGNAL( samplesChanged( int, int ) ),
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this, SLOT( updateGraph( int, int ) ) );
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}
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graph::~graph()
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{
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}
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void graph::setForeground( const QPixmap &_pixmap )
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{
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m_foreground = _pixmap;
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}
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/*
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void graph::loadSampleFromFile( const QString & _filename )
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{
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int i;
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// zero sample_shape
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for( i = 0; i < sampleLength; i++ )
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{
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samplePointer[i] = 0;
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}
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// load user shape
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sampleBuffer buffer( _filename );
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// copy buffer data
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int trimSize = fmin( size(), static_cast<int>(buffer.frames()) );
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for( i = 0; i < trimSize; i++ )
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{
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samplePointer[i] = (float)*buffer.data()[i];
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}
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}
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*/
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void graph::mouseMoveEvent ( QMouseEvent * _me )
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{
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// get position
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int x = _me->x();
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int y = _me->y();
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static bool skip = false;
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if( skip )
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{
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skip = false;
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return;
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}
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// avoid mouse leaps
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int diff = x - m_lastCursorX;
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if( diff >= 1 )
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{
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x = min( width() - 3, m_lastCursorX + 1);
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}
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else if( diff <= 1 )
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{
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x = max( 2, m_lastCursorX - 1 );
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}
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else
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{
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x = m_lastCursorX;
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}
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y = max( 2, min( y, height()-3 ) );
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changeSampleAt( x, y );
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// update mouse
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m_lastCursorX = x;
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QPoint pt = mapToGlobal( QPoint( x, y ) );
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QCursor::setPos( pt.x(), pt.y() );
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skip = true;
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}
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void graph::mousePressEvent( QMouseEvent * _me )
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{
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if( _me->button() == Qt::LeftButton )
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{
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// toggle mouse state
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m_mouseDown = true;
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// get position
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int x = _me->x();
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int y = _me->y();
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changeSampleAt( x, y );
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// toggle mouse state
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m_mouseDown = true;
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setCursor( Qt::BlankCursor );
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m_lastCursorX = x;
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}
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}
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void graph::changeSampleAt(int _x, int _y)
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{
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float minVal = model()->minValue();
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float maxVal = model()->maxValue();
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if ( width() <= 4 )
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{
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return;
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}
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float xscale = static_cast<float>( model()->length() ) /
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( width()-4 );
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// consider border of background image
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_x -= 2;
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_y -= 2;
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// subtract max from min because Qt's Y-axis is backwards
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float range = minVal - maxVal;
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float val = ( _y*range/( height()-4 ) ) + maxVal;
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model()->setSampleAt( _x*xscale, val );
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}
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void graph::mouseReleaseEvent( QMouseEvent * _me )
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{
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if( _me->button() == Qt::LeftButton )
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{
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// toggle mouse state
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m_mouseDown = false;
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setCursor( Qt::ArrowCursor );
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update();
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}
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}
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void graph::paintEvent( QPaintEvent * )
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{
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QPainter p( this );
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p.setPen( QPen(QColor( 0xFF, 0xAA, 0x00 ), 1) );
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QVector<float> * samps = &(model()->m_samples);
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int length = model()->length();
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int maxVal = model()->maxValue();
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float xscale = ( width()-4 ) / length;
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float yscale = (float)( height()-4 ) / ( model()->minValue() - maxVal );
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// Max index, more useful below
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length--;
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p.setRenderHints( QPainter::Antialiasing, TRUE );
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for( int i=0; i < length; i++ )
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{
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// Needs to be rewritten
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p.drawLine(2+static_cast<int>(i*xscale),
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2+static_cast<int>( ( (*samps)[i] - maxVal ) * yscale ),
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2+static_cast<int>((i+1)*xscale),
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2+static_cast<int>( ( (*samps)[i+1] - maxVal ) * yscale )
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);
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}
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// Draw last segment flat
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p.drawLine(2+static_cast<int>(length*xscale),
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2+static_cast<int>( ( (*samps)[length] - maxVal ) * yscale ),
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width()-2,
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2+static_cast<int>( ( (*samps)[length] - maxVal ) * yscale ) );
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p.setRenderHints( QPainter::Antialiasing, FALSE );
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// draw Pointer
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if( m_mouseDown )
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{
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QPoint cursor = mapFromGlobal( QCursor::pos() );
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p.setPen( QColor( 0xAA, 0xFF, 0x00 ) );
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p.drawLine( 2, cursor.y(), width()-2, cursor.y() );
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p.drawLine( cursor.x(), 2, cursor.x(), height()-2 );
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}
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p.drawPixmap( 0, 0, m_foreground );
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}
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void graph::dropEvent( QDropEvent * _de )
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{
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QString type = stringPairDrag::decodeKey( _de );
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QString value = stringPairDrag::decodeValue( _de );
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if( type == "samplefile" )
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{
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// TODO: call setWaveToUser
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// loadSampleFromFile( value );
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_de->accept();
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}
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}
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void graph::dragEnterEvent( QDragEnterEvent * _dee )
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{
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if( stringPairDrag::processDragEnterEvent( _dee,
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QString( "samplefile" ) ) == FALSE )
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{
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_dee->ignore();
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}
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}
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void graph::modelChanged( void )
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{
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graphModel * gModel = castModel<graphModel>();
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QObject::connect( gModel, SIGNAL( samplesChanged( Uint32, Uint32 ) ),
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this, SLOT( updateGraph( Uint32, Uint32 ) ) );
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}
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void graph::updateGraph( Uint32 _startPos, Uint32 _endPos )
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{
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// Can optimize by only drawing changed position
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update();
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}
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graphModel::graphModel( float _min, float _max, Uint32 _length,
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::model * _parent, track * _track,
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bool _default_constructed ) :
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model( _parent, _default_constructed ),
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m_minValue( _min ),
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m_maxValue( _max ),
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m_samples( _length )
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{
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}
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graphModel::~graphModel()
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{
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}
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void graphModel::setRange( float _min, float _max )
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{
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if( _min != m_minValue || _max != m_maxValue )
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{
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m_minValue = _min;
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m_maxValue = _max;
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if( !m_samples.isEmpty() )
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{
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// Trim existing values
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for( int i=0; i < length(); i++ )
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{
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m_samples[i] = fmaxf( _min, fminf( m_samples[i], _max ) );
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}
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}
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emit rangeChanged();
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}
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}
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void graphModel::setLength( Uint32 _length )
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{
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if( _length != length() )
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{
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m_samples.resize( _length );
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emit lengthChanged();
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}
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}
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void graphModel::setSampleAt( Uint32 _x, float _val )
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{
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// boundary check
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if ( _x >= 0 && _x < length() &&
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_val >= minValue() && _val < maxValue() )
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{
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// change sample shape
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m_samples[_x] = _val;
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emit samplesChanged( _x, _x );
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}
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}
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void graphModel::setSamples( const float * _samples )
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{
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qCopy( _samples, _samples + length(), m_samples.begin());
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emit samplesChanged( 0, length()-1 );
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}
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void graphModel::setWaveToSine( void )
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{
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for( Uint32 i = 0; i < length(); i++ )
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{
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m_samples[i] = oscillator::sinSample(
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i / static_cast<float>( length() ) );
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}
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emit samplesChanged( 0, length() - 1 );
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};
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void graphModel::setWaveToTriangle( void )
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{
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for( Uint32 i = 0; i < length(); i++ )
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{
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m_samples[i] = oscillator::triangleSample(
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i / static_cast<float>( length() ) );
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}
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emit samplesChanged( 0, length() - 1 );
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};
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void graphModel::setWaveToSaw( void )
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{
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for( Uint32 i = 0; i < length(); i++ )
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{
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m_samples[i] = oscillator::sawSample(
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i / static_cast<float>( length() ) );
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}
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emit samplesChanged( 0, length() - 1 );
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};
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void graphModel::setWaveToSquare( void )
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{
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for( Uint32 i = 0; i < length(); i++ )
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{
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m_samples[i] = oscillator::squareSample(
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i / static_cast<float>( length() ) );
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}
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emit samplesChanged( 0, length() - 1 );
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};
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void graphModel::setWaveToNoise( void )
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{
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for( Uint32 i = 0; i < length(); i++ )
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{
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m_samples[i] = oscillator::noiseSample(
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i / static_cast<float>( length() ) );
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}
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emit samplesChanged( 0, length() - 1 );
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};
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void graphModel::smooth( void )
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{
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// store values in temporary array
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QVector<float> temp = m_samples;
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// Smoothing
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m_samples[0] = ( temp[0] + temp[length()-1] ) * 0.5f;
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for ( Uint32 i=1; i < length(); i++ )
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{
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m_samples[i] = ( temp[i-1] + temp[i] ) * 0.5f;
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}
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emit samplesChanged(0, length()-1);
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}
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void graphModel::normalize( void )
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{
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float max = 0.0001f;
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for( Uint32 i = 0; i < length(); i++ )
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{
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if( fabsf(m_samples[i]) > max && m_samples[i] != 0.0f )
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{
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max = fabs( m_samples[i] );
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}
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}
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for( Uint32 i = 0; i < length(); i++ )
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{
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m_samples[i] /= max;
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}
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if( max != 1.0f ) {
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emit samplesChanged( 0, length()-1 );
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}
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}
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#include "graph.moc"
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Reference in New Issue
Block a user