move the debug stats panel out of the renderer

src/ui/GameWorldView.cpp

@@ -27,6 +27,7 @@
 #include <QPen>
 #include <QPixmap>
 #include <QRadialGradient>
+#include <QFontMetrics>
 #include <QStringList>
 #include <QTimer>
 
@@ -405,6 +406,7 @@ void GameWorldView::paintGL()
 
     // Screen-anchored chrome over the finished world.
     drawScreenSpace(painter);
+    if (m_debugDraw) { drawDebugOverlay(painter); }
     drawPauseBorder(painter);
     drawDeconstructBorder(painter);
     drawReplayOverlay(painter);
@@ -821,6 +823,51 @@ void GameWorldView::applyBeltDragPath()
 // ---------------------------------------------------------------------------
 
 
+void GameWorldView::drawDebugOverlay(QPainter& painter)
+{
+    const QStringList lines = {
+        tr("Accumulated Threat Level: %1")
+            .arg(m_sim->getThreatLevel(), 0, 'f', 1),
+        tr("Time until Wave: %1s")
+            .arg(ticksToSeconds(m_sim->getNormalGapRemainingTicks()), 0, 'f', 1),
+        tr("Threat Accumulation Rate: %1 threat/s")
+            .arg(m_sim->getThreatAccumulationRate(), 0, 'f', 1),
+        tr("Max Factory Production: %1 threat/s")
+            .arg(m_sim->getMaxFactoryProductionThreatRate(), 0, 'f', 1),
+        tr("Current Factory Production: %1 threat/s")
+            .arg(m_sim->getCurrentFactoryProductionThreatRate(), 0, 'f', 1),
+    };
+
+    QFont font = painter.font();
+    font.setPointSize(m_visuals->toast.fontSize);
+    painter.setFont(font);
+
+    const QFontMetrics fm = painter.fontMetrics();
+    const int lineH   = fm.height();
+    const int padding = 8;
+    const int spacing = 4;
+
+    int textW = 0;
+    for (const QString& line : lines)
+    {
+        textW = std::max(textW, fm.horizontalAdvance(line));
+    }
+    const int bgW = textW + padding * 2;
+    const int bgH = lineH * lines.size() + spacing * (lines.size() - 1) + padding * 2;
+
+    const QRect bgRect(padding, padding, bgW, bgH);
+    painter.fillRect(bgRect, QColor(0, 0, 0, 160));
+
+    painter.setPen(Qt::white);
+    int y = padding * 2;
+    for (const QString& line : lines)
+    {
+        const QRect textRect(padding * 2, y, textW, lineH);
+        painter.drawText(textRect, Qt::AlignLeft | Qt::AlignVCenter, line);
+        y += lineH + spacing;
+    }
+}
+
 void GameWorldView::drawScreenSpace(QPainter& /*painter*/)
 {
 }