Revision control
++ // Copyright (C) 2025 The Qt Company Ltd.
++ // Copyright (C) 2018 QUIt Coding <info@quitcoding.com>
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
++ // Qt-Security score:significant reason:default
++
++
++ #include "qcanvasdebugcountervisualizer_p.h"
++ #include "qcanvaspainter_p.h"
++
++ QT_BEGIN_NAMESPACE
++
++ QCanvasDebugCounterVisualizer::QCanvasDebugCounterVisualizer()
++ : m_debugNsElapsed(0)
++ , m_debugCounter(0)
++ , m_debugMsElapsed(QLatin1String("0.000"))
++ {
++ }
++
++ void QCanvasDebugCounterVisualizer::start()
++ {
++ m_debugTimer.start();
++ }
++
++ void QCanvasDebugCounterVisualizer::paint(QCanvasPainter *painter, float width, float height, const QCDebugCounters &debugCounters)
++ {
++ if (!painter)
++ return;
++
++ qint64 elapsed = m_debugTimer.nsecsElapsed();
++ m_debugNsElapsed += elapsed;
++ m_debugCounter++;
++ if (!m_debugUpdateTimer.isValid())
++ m_debugUpdateTimer.start();
++
++ // How often time is updated, in seconds
++ // Longer period increases accuracy
++ const int UPDATE_FREQUENCY_MS = 1000;
++ if (m_debugUpdateTimer.elapsed() >= UPDATE_FREQUENCY_MS) {
++ qint64 ms = 1000000;
++ double msElapsed = double(m_debugNsElapsed) / (ms * m_debugCounter);
++ m_debugMsElapsed = QString::number(msElapsed, 'f', 3);
++ m_debugNsElapsed = 0;
++ m_debugCounter = 0;
++ m_debugUpdateTimer.start();
++ }
++ float fontSize = 14.0f;
++ float margin = fontSize * 0.2f;
++ float debugHeight = fontSize * 7.0f + margin * 3.0f;
++ float debugWidth = qMin(width, 28 * fontSize);
++ float debugY = height - debugHeight;
++ // Note: Returning these state settings back
++ // shouldn't be needed as this debug is painted
++ // as the very last thing.
++ painter->reset();
++ painter->resetClipping();
++
++ // Background
++ painter->setFillStyle(QColor::fromRgba(0xB0000000));
++ painter->fillRect(0, debugY, debugWidth, debugHeight);
++
++ // Texts
++ static const QString debugText1 = QStringLiteral(u"DRAWCALLS:");
++ static const QString debugText2 = QStringLiteral(u"FILL");
++ static const QString debugText3 = QStringLiteral(u"STROKE");
++ static const QString debugText4 = QStringLiteral(u"TEXT");
++ static const QString debugText5 = QStringLiteral(u"TOTAL");
++ static const QString debugText6 = QStringLiteral(u"TRIANGLES:");
++ QFont font;
++ font.setPixelSize(fontSize);
++ painter->setFont(font);
++ painter->setTextAlign(QCanvasPainter::TextAlign::Left);
++ painter->setTextBaseline(QCanvasPainter::TextBaseline::Top);
++ painter->setFillStyle(0xFFFFFFFF);
++ // Draw calls and triangles table
++ float textY = debugY;
++ float cellWidth = debugWidth / 6.0f;
++ painter->fillText(debugText2, margin + 2.0f * cellWidth, textY);
++ painter->fillText(debugText3, margin + 3.0f * cellWidth, textY);
++ painter->fillText(debugText4, margin + 4.0f * cellWidth, textY);
++ painter->fillText(debugText5, margin + 5.0f * cellWidth, textY);
++ textY += fontSize + margin;
++ painter->fillText(debugText1, margin, textY);
++ painter->fillText(QString::number(debugCounters.fillDrawCallCount),
++ margin + 2.0f * cellWidth, textY);
++ painter->fillText(QString::number(debugCounters.strokeDrawCallCount),
++ margin + 3.0f * cellWidth, textY);
++ painter->fillText(QString::number(debugCounters.textDrawCallCount),
++ margin + 4.0f * cellWidth, textY);
++ painter->fillText(QString::number(debugCounters.drawCallCount),
++ margin + 5.0f * cellWidth, textY);
++ textY += fontSize + margin;
++ painter->fillText(debugText6, margin, textY);
++ painter->fillText(QString::number(debugCounters.fillTriangleCount),
++ margin + 2.0f * cellWidth, textY);
++ painter->fillText(QString::number(debugCounters.strokeTriangleCount),
++ margin + 3.0f * cellWidth, textY);
++ painter->fillText(QString::number(debugCounters.textTriangleCount),
++ margin + 4.0f * cellWidth, textY);
++ painter->fillText(QString::number(debugCounters.triangleCount),
++ margin + 5.0f * cellWidth, textY);
++ // Textures and timing info
++ textY += (fontSize + margin) * 2;
++ QString debugText7 = QStringLiteral("IMAGES: %1 (%2 kB); TIME: %3 ms")
++ .arg(debugCounters.imageCount).arg(debugCounters.imageMemoryUsage).arg(m_debugMsElapsed);
++ painter->fillText(debugText7, margin, textY);
++ textY += fontSize + margin;
++ QString debugText8 = QStringLiteral("PATH CACHE: %1 groups, %2 subpaths (%3 kB)")
++ .arg(debugCounters.pathGroupCount).arg(debugCounters.cachedSubpathCount).arg(debugCounters.cachedPathVertexDataSize / 1000);
++ painter->fillText(debugText8, margin, textY);
++ }
++
++ QT_END_NAMESPACE