/*! \brief Paint the piano display view in response to an event
*
* This method draws the piano and the 'root note' base. It draws
* the base first, then all the white keys, then all the black keys.
*
* \todo Is there supposed to be a parameter given here?
*/
void PianoView::paintEvent( QPaintEvent * )
{
QPainter p( this );
// set smaller font for printing number of every octave
p.setFont( pointSize<LABEL_TEXT_SIZE>( p.font() ) );
// draw bar above the keyboard (there will be the labels
// for all C's)
p.fillRect( QRect( 0, 1, width(), PIANO_BASE-2 ), p.background() );
// draw the line above the keyboard
p.setPen( Qt::black );
p.drawLine( 0, 0, width(), 0 );
p.drawLine( 0, PIANO_BASE-1, width(), PIANO_BASE-1 );
p.setPen( Qt::white );
const int base_key = ( m_piano != NULL ) ?
m_piano->instrumentTrack()->baseNoteModel()->value() : 0;
QColor baseKeyColor = QApplication::palette().color( QPalette::Active,
QPalette::BrightText );
if( Piano::isWhiteKey( base_key ) )
{
p.fillRect( QRect( getKeyX( base_key ), 1, PW_WHITE_KEY_WIDTH-1,
PIANO_BASE-2 ), baseKeyColor );
}
else
{
p.fillRect( QRect( getKeyX( base_key ) + 1, 1,
PW_BLACK_KEY_WIDTH - 1, PIANO_BASE - 2 ), baseKeyColor);
}
int cur_key = m_startKey;
// draw all white keys...
for( int x = 0; x < width(); )
{
while( Piano::isBlackKey( cur_key ) )
{
++cur_key;
}
// draw pressed or not pressed key, depending on state of
// current key
if( m_piano && m_piano->isKeyPressed( cur_key ) )
{
p.drawPixmap( x, PIANO_BASE, *s_whiteKeyPressedPm );
}
else
{
p.drawPixmap( x, PIANO_BASE, *s_whiteKeyPm );
}
x += PW_WHITE_KEY_WIDTH;
if( (Keys) (cur_key%KeysPerOctave) == Key_C )
{
// label key of note C with "C" and number of current
// octave
p.drawText( x - PW_WHITE_KEY_WIDTH, LABEL_TEXT_SIZE + 2,
QString( "C" ) + QString::number(
cur_key / KeysPerOctave, 10 ) );
}
++cur_key;
}
// reset all values, because now we're going to draw all black keys
cur_key = m_startKey;
int white_cnt = 0;
int startKey = m_startKey;
if( startKey > 0 && Piano::isBlackKey( (Keys)(--startKey) ) )
{
if( m_piano && m_piano->isKeyPressed( startKey ) )
{
p.drawPixmap( 0 - PW_WHITE_KEY_WIDTH / 2, PIANO_BASE, *s_blackKeyPressedPm );
}
else
{
p.drawPixmap( 0 - PW_WHITE_KEY_WIDTH / 2, PIANO_BASE, *s_blackKeyPm );
}
}
// now draw all black keys...
for( int x = 0; x < width(); )
{
if( Piano::isBlackKey( cur_key ) )
{
// draw pressed or not pressed key, depending on
// state of current key
if( m_piano && m_piano->isKeyPressed( cur_key ) )
{
p.drawPixmap( x + PW_WHITE_KEY_WIDTH / 2, PIANO_BASE, *s_blackKeyPressedPm );
}
else
{
p.drawPixmap( x + PW_WHITE_KEY_WIDTH / 2, PIANO_BASE, *s_blackKeyPm );
}
x += PW_WHITE_KEY_WIDTH;
white_cnt = 0;
}
else
{
// simple workaround for increasing x if there were two
// white keys (e.g. between E and F)
++white_cnt;
if( white_cnt > 1 )
{
x += PW_WHITE_KEY_WIDTH;
}
}
++cur_key;
}
}
/*! \brief Paint the piano display view in response to an event
*
* This method draws the piano and the 'root note' base. It draws
* the base first, then all the white keys, then all the black keys.
*
* \todo Is there supposed to be a parameter given here?
*/
void PianoView::paintEvent( QPaintEvent * )
{
QPainter p( this );
// set smaller font for printing number of every octave
p.setFont( pointSize<LABEL_TEXT_SIZE>( p.font() ) );
// draw blue bar above the actual keyboard (there will be the labels
// for all C's)
QLinearGradient g( 0, 0, 0, PIANO_BASE-3 );
g.setColorAt( 0, Qt::black );
g.setColorAt( 0.1, QColor( 96, 96, 96 ) );
g.setColorAt( 1, Qt::black );
p.fillRect( QRect( 0, 1, width(), PIANO_BASE-2 ), g );
// draw stuff above the actual keyboard
p.setPen( Qt::black );
p.drawLine( 0, 0, width(), 0 );
p.drawLine( 0, PIANO_BASE-1, width(), PIANO_BASE-1 );
p.setPen( Qt::white );
const int base_key = ( m_piano != NULL ) ?
m_piano->m_midiEvProc->baseNoteModel()->value() : 0;
g.setColorAt( 0, QColor( 0, 96, 0 ) );
g.setColorAt( 0.1, QColor( 64, 255, 64 ) );
g.setColorAt( 1, QColor( 0, 96, 0 ) );
if( KEY_ORDER[base_key % KeysPerOctave] == Piano::WhiteKey )
{
p.fillRect( QRect( getKeyX( base_key ), 1, PW_WHITE_KEY_WIDTH-1,
PIANO_BASE-2 ), g );
}
else
{
p.fillRect( QRect( getKeyX( base_key ) + 1, 1,
PW_BLACK_KEY_WIDTH - 1, PIANO_BASE - 2 ), g );
}
int cur_key = m_startKey;
// draw all white keys...
for( int x = 0; x < width(); )
{
while( KEY_ORDER[cur_key%KeysPerOctave] != Piano::WhiteKey )
{
++cur_key;
}
// draw pressed or not pressed key, depending on state of
// current key
if( m_piano && m_piano->m_pressedKeys[cur_key] == true )
{
p.drawPixmap( x, PIANO_BASE, *s_whiteKeyPressedPm );
}
else
{
p.drawPixmap( x, PIANO_BASE, *s_whiteKeyPm );
}
x += PW_WHITE_KEY_WIDTH;
if( (Keys) (cur_key%KeysPerOctave) == Key_C )
{
// label key of note C with "C" and number of current
// octave
p.drawText( x - PW_WHITE_KEY_WIDTH, LABEL_TEXT_SIZE + 2,
QString( "C" ) + QString::number(
cur_key / KeysPerOctave, 10 ) );
}
++cur_key;
}
// reset all values, because now we're going to draw all black keys
cur_key = m_startKey;
int white_cnt = 0;
int s_key = m_startKey;
if( s_key > 0 &&
KEY_ORDER[(Keys)(--s_key) % KeysPerOctave] == Piano::BlackKey )
{
if( m_piano && m_piano->m_pressedKeys[s_key] == true )
{
p.drawPixmap( 0 - PW_WHITE_KEY_WIDTH / 2, PIANO_BASE,
*s_blackKeyPressedPm );
}
else
{
p.drawPixmap( 0 - PW_WHITE_KEY_WIDTH / 2, PIANO_BASE,
*s_blackKeyPm );
}
}
// now draw all black keys...
for( int x = 0; x < width(); )
{
if( KEY_ORDER[cur_key%KeysPerOctave] == Piano::BlackKey )
{
// draw pressed or not pressed key, depending on
// state of current key
if( m_piano && m_piano->m_pressedKeys[cur_key] == true )
{
p.drawPixmap( x + PW_WHITE_KEY_WIDTH / 2,
PIANO_BASE,
*s_blackKeyPressedPm );
}
else
{
p.drawPixmap( x + PW_WHITE_KEY_WIDTH / 2,
PIANO_BASE, *s_blackKeyPm );
}
x += PW_WHITE_KEY_WIDTH;
white_cnt = 0;
}
else
{
// simple workaround for increasing x if there were two
// white keys (e.g. between E and F)
++white_cnt;
if( white_cnt > 1 )
{
x += PW_WHITE_KEY_WIDTH;
}
}
++cur_key;
}
}
