void WVuMeter::paintEvent(QPaintEvent *) {
ScopedTimer t("WVuMeter::paintEvent");
QStyleOption option;
option.initFrom(this);
QStylePainter p(this);
p.drawPrimitive(QStyle::PE_Widget, option);
if (!m_pPixmapBack.isNull() && !m_pPixmapBack->isNull()) {
// Draw background.
m_pPixmapBack->draw(0, 0, &p);
}
if (!m_pPixmapVu.isNull() && !m_pPixmapVu->isNull()) {
int idx = static_cast<int>(getControlParameterDisplay() * m_iNoPos);
// Range check
if (idx > m_iNoPos)
idx = m_iNoPos;
else if (idx < 0)
idx = 0;
// Draw (part of) vu
if (m_bHorizontal) {
// This is a hack to fix something weird with horizontal VU meters:
if (idx == 0)
idx = 1;
QPointF targetPoint(0, 0);
QRectF sourceRect(0, 0, idx, m_pPixmapVu->height());
m_pPixmapVu->draw(targetPoint, &p, sourceRect);
if(m_iPeakHoldSize > 0 && m_iPeakPos > 0) {
targetPoint = QPointF(m_iPeakPos - m_iPeakHoldSize, 0);
sourceRect = QRectF(m_iPeakPos - m_iPeakHoldSize, 0,
m_iPeakHoldSize, m_pPixmapVu->height());
m_pPixmapVu->draw(targetPoint, &p, sourceRect);
}
} else {
QPointF targetPoint(0, m_iNoPos - idx);
QRectF sourceRect(0, m_iNoPos - idx, m_pPixmapVu->width(), idx);
m_pPixmapVu->draw(targetPoint, &p, sourceRect);
if (m_iPeakHoldSize > 0 && m_iPeakPos > 0) {
targetPoint = QPointF(0, m_pPixmapVu->height() - m_iPeakPos);
sourceRect = QRectF(0, m_pPixmapVu->height() - m_iPeakPos,
m_pPixmapVu->width(), m_iPeakHoldSize);
m_pPixmapVu->draw(targetPoint, &p, sourceRect);
}
}
}
}
void WDisplay::paintEvent(QPaintEvent* /*unused*/) {
QStyleOption option;
option.initFrom(this);
QStylePainter p(this);
p.drawPrimitive(QStyle::PE_Widget, option);
if (m_pPixmapBack) {
m_pPixmapBack->draw(rect(), &p);
}
// If we are disabled, use the disabled pixmaps. If not, use the regular
// pixmaps.
const QVector<PaintablePointer>& pixmaps = (!isEnabled() && m_bDisabledLoaded) ?
m_disabledPixmaps : m_pixmaps;
if (pixmaps.empty()) {
return;
}
int idx = getPixmapForParameter(getControlParameterDisplay());
// onConnectedControlChanged uses this to detect no-ops but it does not
// clamp so don't clamp.
m_iCurrentPixmap = idx;
// Clamp active pixmap index to valid ranges.
if (idx < 0) {
idx = 0;
} else if (idx >= pixmaps.size()) {
idx = pixmaps.size() - 1;
}
PaintablePointer pPixmap = pixmaps[idx];
if (pPixmap) {
pPixmap->draw(rect(), &p);
}
}
void WPushButton::paintEvent(QPaintEvent* e) {
Q_UNUSED(e);
QStyleOption option;
option.initFrom(this);
QStylePainter p(this);
p.drawPrimitive(QStyle::PE_Widget, option);
double value = getControlParameterDisplay();
if (m_iNoStates == 0) {
return;
}
const QVector<PaintablePointer>& pixmaps = m_bPressed ?
m_pressedPixmaps : m_unpressedPixmaps;
int idx = static_cast<int>(value) % m_iNoStates;
// Just in case m_iNoStates is somehow different from pixmaps.size().
if (idx < 0){
idx = 0;
} else if (idx >= pixmaps.size()) {
idx = pixmaps.size() - 1;
}
if (m_pPixmapBack) {
m_pPixmapBack->draw(0, 0, &p);
}
PaintablePointer pPixmap = pixmaps.at(idx);
if (!pPixmap.isNull() && !pPixmap->isNull()) {
pPixmap->draw(0, 0, &p);
}
QString text = m_text.at(idx);
if (!text.isEmpty()) {
p.drawText(rect(), Qt::AlignCenter, text);
}
}
void WKnobComposed::paintEvent(QPaintEvent* e) {
Q_UNUSED(e);
QStyleOption option;
option.initFrom(this);
QStylePainter p(this);
p.setRenderHint(QPainter::Antialiasing);
p.setRenderHint(QPainter::SmoothPixmapTransform);
p.drawPrimitive(QStyle::PE_Widget, option);
if (m_pPixmapBack) {
m_pPixmapBack->draw(0, 0, &p);
}
if (!m_pKnob.isNull() && !m_pKnob->isNull()) {
p.translate(width() / 2.0, height() / 2.0);
// We update m_dCurrentAngle since onConnectedControlChanged uses it for
// no-op detection.
m_dCurrentAngle = m_dMinAngle + (m_dMaxAngle - m_dMinAngle) * getControlParameterDisplay();
p.rotate(m_dCurrentAngle);
m_pKnob->draw(-m_pKnob->width() / 2.0, -m_pKnob->height() / 2.0, &p);
}
}
