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Widgets/Fader: generic knob drawing code

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Instead of hard-coding pixmap sizes, calculate everything dynamically.
This commit is contained in:
Tobias Doerffel
2012-11-27 23:56:37 +01:00
parent 3b72f1e9d9
commit 3739ef82c6
2 changed files with 5 additions and 16 deletions
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6
include/fader.h
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@@ -79,12 +79,12 @@ private:
virtual void wheelEvent( QWheelEvent *ev );
virtual void paintEvent( QPaintEvent *ev );
inline uint knob_y() const
int knobPosY() const
{
float fRange = m_model->maxValue() - m_model->minValue();
float realVal = m_model->value() - m_model->minValue();
// uint knob_y = (uint)( 116.0 - ( 86.0 * ( m_model->value() / fRange ) ) );
return (uint)( 116.0 - ( 86.0 * ( realVal / fRange ) ) );
return height() - ( ( height() - m_knob.height() ) * ( realVal / fRange ) );
}
FloatModel * m_model;

15
src/gui/widgets/fader.cpp
View File

@@ -225,7 +225,7 @@ void fader::updateTextFloat()
{
s_textFloat->setText( QString("Volume: %1 %").arg( m_model->value() * 100 ) );
}
s_textFloat->moveGlobal( this, QPoint( width() - m_knob.width() - 5, knob_y() - 46 ) );
s_textFloat->moveGlobal( this, QPoint( width() - m_knob.width() - 5, knobPosY() - 46 ) );
}
@@ -268,18 +268,7 @@ void fader::paintEvent( QPaintEvent * ev)
}
// knob
static const uint knob_height = 29;
static const uint knob_width = 15;
float fRange = m_model->maxValue() - m_model->minValue();
float realVal = m_model->value() - m_model->minValue();
// uint knob_y = (uint)( 116.0 - ( 86.0 * ( m_model->value() / fRange ) ) );
uint knob_y = (uint)( 116.0 - ( 86.0 * ( realVal / fRange ) ) );
painter.drawPixmap( QRect( 4, knob_y - knob_height, knob_width, knob_height), m_knob, QRect( 0, 0, knob_width, knob_height ) );
painter.drawPixmap( 4, knobPosY() - m_knob.height(), m_knob );
}