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draw the audio gain level with love

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Nils Fenner 2015-11-16 23:57:57 +01:00
parent 5805c8c2bf
commit cbf0f2e7e0
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1 changed files with 14 additions and 13 deletions
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27
src/widget/tool/micfeedbackwidget.cpp
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@ -31,30 +31,31 @@ MicFeedbackWidget::MicFeedbackWidget(QWidget *parent)
void MicFeedbackWidget::paintEvent(QPaintEvent*)
{
const int w = width();
const int h = height();
QPainter painter(this);
painter.setPen(QPen(Qt::black));
painter.drawRect(QRect(0, 0, width() - 1, height() - 1));
painter.setPen(QPen(Qt::gray));
painter.drawRoundedRect(QRect(0, 0, w - 1, h - 1), 3., 3.);
int gradientWidth = round(width() * current) - 4;
int gradientWidth = qMax(0, qRound(w * current) - 4);
if (gradientWidth < 0)
gradientWidth = 0;
QRect gradientRect(2, 2, gradientWidth, h - 4);
QRect gradientRect(2, 2, gradientWidth, height() - 4);
QLinearGradient gradient(0, 0, width(), 0);
gradient.setColorAt(0, Qt::green);
QPainterPath path;
QLinearGradient gradient(0, 0, w, 0);
gradient.setColorAt(0.0, Qt::green);
gradient.setColorAt(0.5, Qt::yellow);
gradient.setColorAt(1, Qt::red);
painter.fillRect(gradientRect, gradient);
gradient.setColorAt(1.0, Qt::red);
path.addRoundedRect(gradientRect, 2.0, 2.0);
painter.fillPath(path, gradient);
float slice = width() / 5;
float slice = w / 5.f;
int padding = slice / 2;
for (int i = 0; i < 5; ++i)
{
float pos = slice * i + padding;
painter.drawLine(pos, 2, pos, height() - 4);
painter.drawLine(pos, 2, pos, h - 4);
}
}