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#include "widget/wvumeterlegacy.h"
#include <QStyleOption>
#include <QStylePainter>
#include "moc_wvumeter.cpp"
#include "util/math.h"
#include "util/timer.h"
#include "widget/wpixmapstore.h"
#define DEFAULT_FALLTIME 20
#define DEFAULT_FALLSTEP 1
#define DEFAULT_HOLDTIME 400
#define DEFAULT_HOLDSIZE 5
WVuMeterLegacy::WVuMeterLegacy(QWidget* pParent)
: WWidget(pParent),
m_dParameter(0),
m_dPeakParameter(0),
m_dLastParameter(0),
m_dLastPeakParameter(0),
m_iPixmapLength(0),
m_bHorizontal(false),
m_iPeakHoldSize(0),
m_iPeakFallStep(0),
m_iPeakHoldTime(0),
m_iPeakFallTime(0),
m_dPeakHoldCountdownMs(0) {
m_timer.start();
}
void WVuMeterLegacy::setup(const QDomNode& node, const SkinContext& context) {
// Set pixmaps
bool bHorizontal = false;
(void)context.hasNodeSelectBool(node, "Horizontal", &bHorizontal);
// Set background pixmap if available
QDomElement backPathNode = context.selectElement(node, "PathBack");
if (!backPathNode.isNull()) {
// The implicit default in <1.12.0 was FIXED so we keep it for backwards
// compatibility.
setPixmapBackground(
context.getPixmapSource(backPathNode),
context.selectScaleMode(backPathNode, Paintable::FIXED),
context.getScaleFactor());
}
QDomElement vuNode = context.selectElement(node, "PathVu");
// The implicit default in <1.12.0 was FIXED so we keep it for backwards
// compatibility.
setPixmaps(context.getPixmapSource(vuNode),
bHorizontal,
context.selectScaleMode(vuNode, Paintable::FIXED),
context.getScaleFactor());
m_iPeakHoldSize = context.selectInt(node, "PeakHoldSize");
if (m_iPeakHoldSize < 0 || m_iPeakHoldSize > 100) {
m_iPeakHoldSize = DEFAULT_HOLDSIZE;
}
m_iPeakFallStep = context.selectInt(node, "PeakFallStep");
if (m_iPeakFallStep < 1 || m_iPeakFallStep > 1000) {
m_iPeakFallStep = DEFAULT_FALLSTEP;
}
m_iPeakHoldTime = context.selectInt(node, "PeakHoldTime");
if (m_iPeakHoldTime < 1 || m_iPeakHoldTime > 3000) {
m_iPeakHoldTime = DEFAULT_HOLDTIME;
}
m_iPeakFallTime = context.selectInt(node, "PeakFallTime");
if (m_iPeakFallTime < 1 || m_iPeakFallTime > 1000) {
m_iPeakFallTime = DEFAULT_FALLTIME;
}
setFocusPolicy(Qt::NoFocus);
}
void WVuMeterLegacy::setPixmapBackground(
const PixmapSource& source,
Paintable::DrawMode mode,
double scaleFactor) {
m_pPixmapBack = WPixmapStore::getPaintable(source, mode, scaleFactor);
if (m_pPixmapBack.isNull() || m_pPixmapBack->isNull()) {
qDebug() << metaObject()->className()
<< "Error loading background pixmap:" << source.getPath();
} else if (mode == Paintable::FIXED) {
setFixedSize(m_pPixmapBack->size());
}
}
void WVuMeterLegacy::setPixmaps(const PixmapSource& source,
bool bHorizontal,
Paintable::DrawMode mode,
double scaleFactor) {
m_pPixmapVu = WPixmapStore::getPaintable(source, mode, scaleFactor);
if (m_pPixmapVu.isNull() || m_pPixmapVu->isNull()) {
qDebug() << "WVuMeterLegacy: Error loading vu pixmap" << source.getPath();
} else {
m_bHorizontal = bHorizontal;
if (m_bHorizontal) {
m_iPixmapLength = m_pPixmapVu->width();
} else {
m_iPixmapLength = m_pPixmapVu->height();
}
}
}
void WVuMeterLegacy::onConnectedControlChanged(double dParameter, double dValue) {
Q_UNUSED(dValue);
m_dParameter = math_clamp(dParameter, 0.0, 1.0);
if (dParameter > 0.0) {
setPeak(dParameter);
} else {
// A 0.0 value is very unlikely except when the VU Meter is disabled
m_dPeakParameter = 0;
}
updateState(m_timer.restart());
}
void WVuMeterLegacy::setPeak(double parameter) {
if (parameter > m_dPeakParameter) {
m_dPeakParameter = parameter;
m_dPeakHoldCountdownMs = m_iPeakHoldTime;
}
}
void WVuMeterLegacy::updateState(mixxx::Duration elapsed) {
double msecsElapsed = elapsed.toDoubleMillis();
// If we're holding at a peak then don't update anything
m_dPeakHoldCountdownMs -= msecsElapsed;
if (m_dPeakHoldCountdownMs > 0) {
return;
} else {
m_dPeakHoldCountdownMs = 0;
}
// Otherwise, decrement the peak position by the fall step size times the
// milliseconds elapsed over the fall time multiplier. The peak will fall
// FallStep times (out of 128 steps) every FallTime milliseconds.
m_dPeakParameter -= static_cast<double>(m_iPeakFallStep) *
msecsElapsed /
static_cast<double>(m_iPeakFallTime * m_iPixmapLength);
m_dPeakParameter = math_clamp(m_dPeakParameter, 0.0, 1.0);
}
void WVuMeterLegacy::maybeUpdate() {
if (m_dParameter != m_dLastParameter || m_dPeakParameter != m_dLastPeakParameter) {
repaint();
}
}
void WVuMeterLegacy::paintEvent(QPaintEvent* /*unused*/) {
ScopedTimer t("WVuMeterLegacy::paintEvent");
QStyleOption option;
option.initFrom(this);
QStylePainter p(this);
p.drawPrimitive(QStyle::PE_Widget, option);
if (!m_pPixmapBack.isNull() && !m_pPixmapBack->isNull()) {
// Draw background. DrawMode takes care of whether to stretch or not.
m_pPixmapBack->draw(rect(), &p);
}
if (!m_pPixmapVu.isNull() && !m_pPixmapVu->isNull()) {
const double widgetWidth = width();
const double widgetHeight = height();
const double pixmapWidth = m_pPixmapVu->width();
const double pixmapHeight = m_pPixmapVu->height();
// Draw (part of) vu
if (m_bHorizontal) {
const double widgetPosition = math_clamp(widgetWidth * m_dParameter,
0.0,
widgetWidth);
QRectF targetRect(0, 0, widgetPosition, widgetHeight);
const double pixmapPosition = math_clamp(pixmapWidth * m_dParameter,
0.0,
pixmapWidth);
QRectF sourceRect(0, 0, pixmapPosition, m_pPixmapVu->height());
m_pPixmapVu->draw(targetRect, &p, sourceRect);
if (m_iPeakHoldSize > 0 && m_dPeakParameter > 0.0) {
const double widgetPeakPosition = math_clamp(
widgetWidth * m_dPeakParameter, 0.0, widgetWidth);
const double widgetPeakHoldSize = widgetWidth *
static_cast<double>(m_iPeakHoldSize) / pixmapWidth;
const double pixmapPeakPosition = math_clamp(
pixmapWidth * m_dPeakParameter, 0.0, pixmapWidth);
const double pixmapPeakHoldSize = m_iPeakHoldSize;
targetRect = QRectF(widgetPeakPosition - widgetPeakHoldSize,
0,
widgetPeakHoldSize,
widgetHeight);
sourceRect = QRectF(pixmapPeakPosition - pixmapPeakHoldSize,
0,
pixmapPeakHoldSize,
pixmapHeight);
m_pPixmapVu->draw(targetRect, &p, sourceRect);
}
} else {
const double widgetPosition = math_clamp(widgetHeight * m_dParameter,
0.0,
widgetHeight);
QRectF targetRect(0, widgetHeight - widgetPosition, widgetWidth, widgetPosition);
const double pixmapPosition = math_clamp(pixmapHeight * m_dParameter,
0.0,
pixmapHeight);
QRectF sourceRect(0, pixmapHeight - pixmapPosition, pixmapWidth, pixmapPosition);
m_pPixmapVu->draw(targetRect, &p, sourceRect);
if (m_iPeakHoldSize > 0 && m_dPeakParameter > 0.0) {
const double widgetPeakPosition = math_clamp(
widgetHeight * m_dPeakParameter, 0.0, widgetHeight);
const double widgetPeakHoldSize = widgetHeight *
static_cast<double>(m_iPeakHoldSize) / pixmapHeight;
const double pixmapPeakPosition = math_clamp(
pixmapHeight * m_dPeakParameter, 0.0, pixmapHeight);
const double pixmapPeakHoldSize = m_iPeakHoldSize;
targetRect = QRectF(0,
widgetHeight - widgetPeakPosition,
widgetWidth,
widgetPeakHoldSize);
sourceRect = QRectF(0,
pixmapHeight - pixmapPeakPosition,
pixmapWidth,
pixmapPeakHoldSize);
m_pPixmapVu->draw(targetRect, &p, sourceRect);
}
}
}
m_dLastParameter = m_dParameter;
m_dLastPeakParameter = m_dPeakParameter;
}
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