107 lines
3.2 KiB
C++
107 lines
3.2 KiB
C++
#include "PanelsPanel.h"
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#include <QLabel>
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#include <QPainter>
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#include <QPainterPath>
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#include <QVBoxLayout>
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#include <QtMath>
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PanelsPanel::PanelsPanel(QWidget *parent) : QWidget(parent)
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{
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auto *layout = new QVBoxLayout(this);
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layout->setContentsMargins(4, 4, 4, 4);
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m_statusLabel = new QLabel("Connect to load panels...", this);
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m_statusLabel->setAlignment(Qt::AlignHCenter | Qt::AlignTop);
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m_statusLabel->setStyleSheet("color: #888; font-style: italic;");
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layout->addWidget(m_statusLabel);
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layout->addStretch(1);
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setMinimumSize(200, 200);
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}
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void PanelsPanel::setRnpCount(int count)
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{
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m_count = count;
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m_colors.clear();
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m_statusLabel->setText(count > 0
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? QString("%1 panel%2").arg(count).arg(count == 1 ? "" : "s")
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: "No panels reported");
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update();
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}
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void PanelsPanel::setPanelColor(int index, const QColor &color)
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{
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m_colors[index] = color;
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update();
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}
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void PanelsPanel::reset()
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{
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m_count = 0;
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m_colors.clear();
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m_statusLabel->setText("Connect to load panels...");
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update();
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}
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void PanelsPanel::paintEvent(QPaintEvent *)
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{
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if (m_count <= 0) return;
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QPainter p(this);
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p.setRenderHint(QPainter::Antialiasing, true);
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const QRectF bounds = rect();
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const QRectF drawArea = bounds.adjusted(0, 28, 0, 0);
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const double side = qMin(drawArea.width(), drawArea.height()) * 0.88;
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const double cx = drawArea.center().x();
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const double cy = drawArea.center().y();
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const double outerR = side / 2.0;
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const double innerR = outerR * 0.44;
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const QRectF outerRect(cx - outerR, cy - outerR, side, side);
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const QRectF innerRect(cx - innerR, cy - innerR, innerR * 2, innerR * 2);
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const double gapDeg = (m_count > 1) ? 3.0 : 0.0;
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const double segSpan = (360.0 - m_count * gapDeg) / m_count;
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static const QColor kDefault(100, 140, 180);
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for (int i = 0; i < m_count; ++i) {
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const double startAngle = 90.0 - i * (segSpan + gapDeg);
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const double sweep = -segSpan;
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QPainterPath path;
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path.arcMoveTo(outerRect, startAngle);
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path.arcTo(outerRect, startAngle, sweep);
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path.arcTo(innerRect, startAngle + sweep, -sweep);
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path.closeSubpath();
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p.setBrush(m_colors.value(i, kDefault));
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p.setPen(QPen(Qt::white, 2));
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p.drawPath(path);
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// Label at segment midpoint
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const double midAngle = startAngle + sweep / 2.0;
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const double midAngleRad = qDegreesToRadians(midAngle);
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const double midR = (outerR + innerR) / 2.0;
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const QPointF tc(cx + midR * qCos(midAngleRad),
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cy - midR * qSin(midAngleRad));
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QFont font = p.font();
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font.setBold(true);
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font.setPointSize(qMax(7, qMin(12, static_cast<int>(outerR / (m_count * 0.55 + 2)))));
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p.setFont(font);
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p.setPen(Qt::white);
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p.drawText(QRectF(tc.x() - 22, tc.y() - 11, 44, 22), Qt::AlignCenter, QString::number(i));
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}
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// Centre hole: total count
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QFont cf = p.font();
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cf.setBold(true);
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cf.setPointSize(qMax(8, static_cast<int>(innerR * 0.45)));
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p.setFont(cf);
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p.setPen(palette().text().color());
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p.drawText(innerRect, Qt::AlignCenter, QString::number(m_count));
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}
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