Remove wasm-qt-mandelbrot demo

...that had been added with f90c68316c622971706568303a025bbc58351df3 "WASM: add
Emscripten demo application".  Whatever the original intention, it has probably
served its purpose by now---and now only negatively impacts (re-)build times.

Change-Id: I2bda8d12b91e741c4d0f7d3f02597e0e9505a73a
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/172087
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <stephan.bergmann@allotropia.de>

9 files changed, 0 insertions, 785 deletions

diff --git a/static/CustomTarget_wasm-qt5-mandelbrot_moc.mk b/static/CustomTarget_wasm-qt5-mandelbrot_moc.mk
deleted file mode 100644
index 3d43dadb8832..000000000000
--- a/static/CustomTarget_wasm-qt5-mandelbrot_moc.mk
+++ /dev/null
@@ -1,37 +0,0 @@
-# -*- Mode: makefile-gmake; tab-width: 4; indent-tabs-mode: t -*-
-#
-# This file is part of the LibreOffice project.
-#
-# This Source Code Form is subject to the terms of the Mozilla Public
-# License, v. 2.0. If a copy of the MPL was not distributed with this
-# file, You can obtain one at http://mozilla.org/MPL/2.0/.
-#
-
-$(eval $(call gb_CustomTarget_CustomTarget,static/qt5-mandelbrot))
-
-$(call gb_CustomTarget_get_target,static/qt5-mandelbrot) : \
-	$(gb_CustomTarget_workdir)/static/qt5-mandelbrot/renderthread.moc \
-	$(gb_CustomTarget_workdir)/static/qt5-mandelbrot/mandelbrotwidget.moc \
-
-qt5_mandelbrot_MOCDEFS_H := $(gb_CustomTarget_workdir)/static/qt5-mandelbrot/moc_predefs.h
-qt5_mandelbrot_MOCDEFS_CXX := $(gb_CustomTarget_workdir)/static/qt5-mandelbrot/moc_dummy.cxx
-qt5_mandelbrot_WORKDIR :=  $(gb_CustomTarget_workdir)/static/qt5-mandelbrot/.dir
-
-$(qt5_mandelbrot_MOCDEFS_CXX): | $(qt5_mandelbrot_WORKDIR)
-	touch $@
-
-$(qt5_mandelbrot_MOCDEFS_H): $(qt5_mandelbrot_MOCDEFS_CXX) | $(qt5_mandelbrot_WORKDIR)
-	$(call gb_Output_announce,$(subst $(WORKDIR)/,,$@),$(true),CXX,1)
-	$(call gb_Trace_StartRange,$(subst $(WORKDIR)/,,$@),CXX)
-	$(CXX) -pipe -O2 -std=gnu++11 -fno-exceptions $(gb_EMSCRIPTEN_CPPFLAGS) -dM -E -o $@ $<
-	$(call gb_Trace_EndRange,$(subst $(WORKDIR)/,,$@),CXX)
-
-$(gb_CustomTarget_workdir)/static/qt5-mandelbrot/%.moc : \
-		$(SRCDIR)/static/source/qt5-mandelbrot/%.h \
-		$(qt5_mandelbrot_MOCDEFS_H) | $(qt5_mandelbrot_WORKDIR)
-	$(call gb_Output_announce,$(subst $(WORKDIR)/,,$@),$(true),MOC,1)
-	$(call gb_Trace_StartRange,$(subst $(WORKDIR)/,,$@),MOC)
-	$(MOC5) --include $(qt5_mandelbrot_MOCDEFS_H) $(gb_EMSCRIPTEN_QTDEFS) $< -o $@
-	$(call gb_Trace_EndRange,$(subst $(WORKDIR)/,,$@),MOC)
-
-# vim: set noet sw=4:
diff --git a/static/Executable_wasm-qt5-mandelbrot.mk b/static/Executable_wasm-qt5-mandelbrot.mk
deleted file mode 100644
index e7eac989110e..000000000000
--- a/static/Executable_wasm-qt5-mandelbrot.mk
+++ /dev/null
@@ -1,32 +0,0 @@
-# -*- Mode: makefile-gmake; tab-width: 4; indent-tabs-mode: t -*-
-#
-# This file is part of the LibreOffice project.
-#
-# This Source Code Form is subject to the terms of the Mozilla Public
-# License, v. 2.0. If a copy of the MPL was not distributed with this
-# file, You can obtain one at http://mozilla.org/MPL/2.0/.
-#
-
-$(eval $(call gb_Executable_Executable,wasm-qt5-mandelbrot))
-
-$(eval $(call gb_Executable_use_custom_headers,wasm-qt5-mandelbrot,static/qt5-mandelbrot))
-
-$(eval $(call gb_Executable_use_externals,wasm-qt5-mandelbrot,\
-    graphite \
-    freetype \
-    harfbuzz \
-    libpng \
-    qt5 \
-))
-
-$(eval $(call gb_Executable_add_exception_objects,wasm-qt5-mandelbrot,\
-    static/source/qt5-mandelbrot/main \
-    static/source/qt5-mandelbrot/mandelbrotwidget \
-    static/source/qt5-mandelbrot/renderthread \
-))
-
-$(eval $(call gb_Executable_add_defs,wasm-qt5-mandelbrot,\
-    -DVCL_INTERNALS \
-))
-
-# vim: set noet sw=4 ts=4:
diff --git a/static/Module_static.mk b/static/Module_static.mk
index 337ca13945cb..4c57b94d7d21 100644
--- a/static/Module_static.mk
+++ b/static/Module_static.mk
@@ -22,10 +22,6 @@ $(eval $(call gb_Module_add_targets,static,\
     Package_favicon \
     Package_unoembind \
     StaticLibrary_unoembind \
-    $(if $(ENABLE_QT5), \
-        CustomTarget_wasm-qt5-mandelbrot_moc \
-        Executable_wasm-qt5-mandelbrot \
-    ) \
 ))
 endif
 
diff --git a/static/README.wasm.md b/static/README.wasm.md
index 64d5a361704f..48a109bd8469 100644
--- a/static/README.wasm.md
+++ b/static/README.wasm.md
@@ -22,7 +22,6 @@ The build generates a Writer-only LO build. You should be able to run either
 
     $ emrun --serve_after_close workdir/installation/LibreOffice/emscripten/qt_soffice.html
     $ emrun --serve_after_close workdir/LinkTarget/Executable/qt_vcldemo.html
-    $ emrun --serve_after_close workdir/LinkTarget/Executable/qt_wasm-qt5-mandelbrot.html
 
 REMINDER: Always start new tabs in the browser, reload might fail / cache!
 INFO: latest browser won't work anymore with 0.0.0.0 and need 127.0.0.1.
diff --git a/static/source/qt5-mandelbrot/main.cxx b/static/source/qt5-mandelbrot/main.cxx
deleted file mode 100644
index 037c63153cf2..000000000000
--- a/static/source/qt5-mandelbrot/main.cxx
+++ /dev/null
@@ -1,66 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2016 The Qt Company Ltd.
-** Contact: https://www.qt.io/licensing/
-**
-** This file is part of the examples of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:BSD$
-** Commercial License Usage
-** Licensees holding valid commercial Qt licenses may use this file in
-** accordance with the commercial license agreement provided with the
-** Software or, alternatively, in accordance with the terms contained in
-** a written agreement between you and The Qt Company. For licensing terms
-** and conditions see https://www.qt.io/terms-conditions. For further
-** information use the contact form at https://www.qt.io/contact-us.
-**
-** BSD License Usage
-** Alternatively, you may use this file under the terms of the BSD license
-** as follows:
-**
-** "Redistribution and use in source and binary forms, with or without
-** modification, are permitted provided that the following conditions are
-** met:
-**   * Redistributions of source code must retain the above copyright
-**     notice, this list of conditions and the following disclaimer.
-**   * Redistributions in binary form must reproduce the above copyright
-**     notice, this list of conditions and the following disclaimer in
-**     the documentation and/or other materials provided with the
-**     distribution.
-**   * Neither the name of The Qt Company Ltd nor the names of its
-**     contributors may be used to endorse or promote products derived
-**     from this software without specific prior written permission.
-**
-**
-** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include "mandelbrotwidget.h"
-
-#include <QtWidgets/QApplication>
-#include <QtCore/QtPlugin>
-
-Q_IMPORT_PLUGIN(QWasmIntegrationPlugin)
-
-int main(int argc, char* argv[])
-{
-    QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
-    QCoreApplication::setAttribute(Qt::AA_UseHighDpiPixmaps);
-    QApplication app(argc, argv);
-    MandelbrotWidget widget;
-    widget.show();
-    return app.exec();
-}
diff --git a/static/source/qt5-mandelbrot/mandelbrotwidget.cxx b/static/source/qt5-mandelbrot/mandelbrotwidget.cxx
deleted file mode 100644
index 5886dd2664c0..000000000000
--- a/static/source/qt5-mandelbrot/mandelbrotwidget.cxx
+++ /dev/null
@@ -1,228 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2016 The Qt Company Ltd.
-** Contact: https://www.qt.io/licensing/
-**
-** This file is part of the examples of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:BSD$
-** Commercial License Usage
-** Licensees holding valid commercial Qt licenses may use this file in
-** accordance with the commercial license agreement provided with the
-** Software or, alternatively, in accordance with the terms contained in
-** a written agreement between you and The Qt Company. For licensing terms
-** and conditions see https://www.qt.io/terms-conditions. For further
-** information use the contact form at https://www.qt.io/contact-us.
-**
-** BSD License Usage
-** Alternatively, you may use this file under the terms of the BSD license
-** as follows:
-**
-** "Redistribution and use in source and binary forms, with or without
-** modification, are permitted provided that the following conditions are
-** met:
-**   * Redistributions of source code must retain the above copyright
-**     notice, this list of conditions and the following disclaimer.
-**   * Redistributions in binary form must reproduce the above copyright
-**     notice, this list of conditions and the following disclaimer in
-**     the documentation and/or other materials provided with the
-**     distribution.
-**   * Neither the name of The Qt Company Ltd nor the names of its
-**     contributors may be used to endorse or promote products derived
-**     from this software without specific prior written permission.
-**
-**
-** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include "mandelbrotwidget.h"
-#include "mandelbrotwidget.moc"
-
-#include <QtGui/QPainter>
-#include <QtGui/QKeyEvent>
-
-#include <math.h>
-
-const double DefaultCenterX = -0.637011;
-const double DefaultCenterY = -0.0395159;
-const double DefaultScale = 0.00403897;
-
-const double ZoomInFactor = 0.8;
-const double ZoomOutFactor = 1 / ZoomInFactor;
-const int ScrollStep = 20;
-
-MandelbrotWidget::MandelbrotWidget(QWidget* parent)
-    : QWidget(parent)
-    , centerX(DefaultCenterX)
-    , centerY(DefaultCenterY)
-    , pixmapScale(DefaultScale)
-    , curScale(DefaultScale)
-{
-    connect(&thread, &RenderThread::renderedImage, this, &MandelbrotWidget::updatePixmap);
-
-    setWindowTitle(tr("Mandelbrot"));
-#if QT_CONFIG(cursor)
-    setCursor(Qt::CrossCursor);
-#endif
-    resize(550, 400);
-}
-
-void MandelbrotWidget::paintEvent(QPaintEvent* /* event */)
-{
-    QPainter painter(this);
-    painter.fillRect(rect(), Qt::black);
-
-    if (pixmap.isNull())
-    {
-        painter.setPen(Qt::white);
-        painter.drawText(rect(), Qt::AlignCenter, tr("Rendering initial image, please wait..."));
-        return;
-    }
-
-    if (qFuzzyCompare(curScale, pixmapScale))
-    {
-        painter.drawPixmap(pixmapOffset, pixmap);
-    }
-    else
-    {
-        auto previewPixmap = qFuzzyCompare(pixmap.devicePixelRatioF(), qreal(1))
-                                 ? pixmap
-                                 : pixmap.scaled(pixmap.size() / pixmap.devicePixelRatioF(),
-                                                 Qt::KeepAspectRatio, Qt::SmoothTransformation);
-        double scaleFactor = pixmapScale / curScale;
-        int newWidth = int(previewPixmap.width() * scaleFactor);
-        int newHeight = int(previewPixmap.height() * scaleFactor);
-        int newX = pixmapOffset.x() + (previewPixmap.width() - newWidth) / 2;
-        int newY = pixmapOffset.y() + (previewPixmap.height() - newHeight) / 2;
-
-        painter.save();
-        painter.translate(newX, newY);
-        painter.scale(scaleFactor, scaleFactor);
-
-        QRectF exposed = painter.transform().inverted().mapRect(rect()).adjusted(-1, -1, 1, 1);
-        painter.drawPixmap(exposed, previewPixmap, exposed);
-        painter.restore();
-    }
-
-    QString text = tr("Use mouse wheel or the '+' and '-' keys to zoom. "
-                      "Press and hold left mouse button to scroll.");
-    QFontMetrics metrics = painter.fontMetrics();
-    int textWidth = metrics.horizontalAdvance(text);
-
-    painter.setPen(Qt::NoPen);
-    painter.setBrush(QColor(0, 0, 0, 127));
-    painter.drawRect((width() - textWidth) / 2 - 5, 0, textWidth + 10, metrics.lineSpacing() + 5);
-    painter.setPen(Qt::white);
-    painter.drawText((width() - textWidth) / 2, metrics.leading() + metrics.ascent(), text);
-}
-
-void MandelbrotWidget::resizeEvent(QResizeEvent* /* event */)
-{
-    thread.render(centerX, centerY, curScale, size(), devicePixelRatioF());
-}
-
-void MandelbrotWidget::keyPressEvent(QKeyEvent* event)
-{
-    switch (event->key())
-    {
-        case Qt::Key_Plus:
-            zoom(ZoomInFactor);
-            break;
-        case Qt::Key_Minus:
-            zoom(ZoomOutFactor);
-            break;
-        case Qt::Key_Left:
-            scroll(-ScrollStep, 0);
-            break;
-        case Qt::Key_Right:
-            scroll(+ScrollStep, 0);
-            break;
-        case Qt::Key_Down:
-            scroll(0, -ScrollStep);
-            break;
-        case Qt::Key_Up:
-            scroll(0, +ScrollStep);
-            break;
-        default:
-            QWidget::keyPressEvent(event);
-    }
-}
-
-#if QT_CONFIG(wheelevent)
-void MandelbrotWidget::wheelEvent(QWheelEvent* event)
-{
-    const int numDegrees = event->angleDelta().y() / 8;
-    const double numSteps = numDegrees / double(15);
-    zoom(pow(ZoomInFactor, numSteps));
-}
-#endif
-
-void MandelbrotWidget::mousePressEvent(QMouseEvent* event)
-{
-    if (event->button() == Qt::LeftButton)
-        lastDragPos = event->pos();
-}
-
-void MandelbrotWidget::mouseMoveEvent(QMouseEvent* event)
-{
-    if (event->buttons() & Qt::LeftButton)
-    {
-        pixmapOffset += event->pos() - lastDragPos;
-        lastDragPos = event->pos();
-        update();
-    }
-}
-
-void MandelbrotWidget::mouseReleaseEvent(QMouseEvent* event)
-{
-    if (event->button() == Qt::LeftButton)
-    {
-        pixmapOffset += event->pos() - lastDragPos;
-        lastDragPos = QPoint();
-
-        const auto pixmapSize = pixmap.size() / pixmap.devicePixelRatioF();
-        int deltaX = (width() - pixmapSize.width()) / 2 - pixmapOffset.x();
-        int deltaY = (height() - pixmapSize.height()) / 2 - pixmapOffset.y();
-        scroll(deltaX, deltaY);
-    }
-}
-
-void MandelbrotWidget::updatePixmap(const QImage& image, double scaleFactor)
-{
-    if (!lastDragPos.isNull())
-        return;
-
-    pixmap = QPixmap::fromImage(image);
-    pixmapOffset = QPoint();
-    lastDragPos = QPoint();
-    pixmapScale = scaleFactor;
-    update();
-}
-
-void MandelbrotWidget::zoom(double zoomFactor)
-{
-    curScale *= zoomFactor;
-    update();
-    thread.render(centerX, centerY, curScale, size(), devicePixelRatioF());
-}
-
-void MandelbrotWidget::scroll(int deltaX, int deltaY)
-{
-    centerX += deltaX * curScale;
-    centerY += deltaY * curScale;
-    update();
-    thread.render(centerX, centerY, curScale, size(), devicePixelRatioF());
-}
diff --git a/static/source/qt5-mandelbrot/mandelbrotwidget.h b/static/source/qt5-mandelbrot/mandelbrotwidget.h
deleted file mode 100644
index 72e95568b522..000000000000
--- a/static/source/qt5-mandelbrot/mandelbrotwidget.h
+++ /dev/null
@@ -1,91 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2016 The Qt Company Ltd.
-** Contact: https://www.qt.io/licensing/
-**
-** This file is part of the examples of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:BSD$
-** Commercial License Usage
-** Licensees holding valid commercial Qt licenses may use this file in
-** accordance with the commercial license agreement provided with the
-** Software or, alternatively, in accordance with the terms contained in
-** a written agreement between you and The Qt Company. For licensing terms
-** and conditions see https://www.qt.io/terms-conditions. For further
-** information use the contact form at https://www.qt.io/contact-us.
-**
-** BSD License Usage
-** Alternatively, you may use this file under the terms of the BSD license
-** as follows:
-**
-** "Redistribution and use in source and binary forms, with or without
-** modification, are permitted provided that the following conditions are
-** met:
-**   * Redistributions of source code must retain the above copyright
-**     notice, this list of conditions and the following disclaimer.
-**   * Redistributions in binary form must reproduce the above copyright
-**     notice, this list of conditions and the following disclaimer in
-**     the documentation and/or other materials provided with the
-**     distribution.
-**   * Neither the name of The Qt Company Ltd nor the names of its
-**     contributors may be used to endorse or promote products derived
-**     from this software without specific prior written permission.
-**
-**
-** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#pragma once
-
-#include <QtGui/QPixmap>
-#include <QtWidgets/QWidget>
-
-#include "renderthread.h"
-
-class MandelbrotWidget : public QWidget
-{
-    Q_OBJECT
-
-public:
-    MandelbrotWidget(QWidget* parent = nullptr);
-
-protected:
-    void paintEvent(QPaintEvent* event) override;
-    void resizeEvent(QResizeEvent* event) override;
-    void keyPressEvent(QKeyEvent* event) override;
-#if QT_CONFIG(wheelevent)
-    void wheelEvent(QWheelEvent* event) override;
-#endif
-    void mousePressEvent(QMouseEvent* event) override;
-    void mouseMoveEvent(QMouseEvent* event) override;
-    void mouseReleaseEvent(QMouseEvent* event) override;
-
-private slots:
-    void updatePixmap(const QImage& image, double scaleFactor);
-    void zoom(double zoomFactor);
-
-private:
-    void scroll(int deltaX, int deltaY);
-
-    RenderThread thread;
-    QPixmap pixmap;
-    QPoint pixmapOffset;
-    QPoint lastDragPos;
-    double centerX;
-    double centerY;
-    double pixmapScale;
-    double curScale;
-};
diff --git a/static/source/qt5-mandelbrot/renderthread.cxx b/static/source/qt5-mandelbrot/renderthread.cxx
deleted file mode 100644
index 398e43ded15d..000000000000
--- a/static/source/qt5-mandelbrot/renderthread.cxx
+++ /dev/null
@@ -1,232 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2016 The Qt Company Ltd.
-** Contact: https://www.qt.io/licensing/
-**
-** This file is part of the examples of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:BSD$
-** Commercial License Usage
-** Licensees holding valid commercial Qt licenses may use this file in
-** accordance with the commercial license agreement provided with the
-** Software or, alternatively, in accordance with the terms contained in
-** a written agreement between you and The Qt Company. For licensing terms
-** and conditions see https://www.qt.io/terms-conditions. For further
-** information use the contact form at https://www.qt.io/contact-us.
-**
-** BSD License Usage
-** Alternatively, you may use this file under the terms of the BSD license
-** as follows:
-**
-** "Redistribution and use in source and binary forms, with or without
-** modification, are permitted provided that the following conditions are
-** met:
-**   * Redistributions of source code must retain the above copyright
-**     notice, this list of conditions and the following disclaimer.
-**   * Redistributions in binary form must reproduce the above copyright
-**     notice, this list of conditions and the following disclaimer in
-**     the documentation and/or other materials provided with the
-**     distribution.
-**   * Neither the name of The Qt Company Ltd nor the names of its
-**     contributors may be used to endorse or promote products derived
-**     from this software without specific prior written permission.
-**
-**
-** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include "renderthread.h"
-#include "renderthread.moc"
-
-#include <QtGui/QImage>
-#include <cmath>
-
-RenderThread::RenderThread(QObject* parent)
-    : QThread(parent)
-{
-    for (int i = 0; i < ColormapSize; ++i)
-        m_colormap[i] = rgbFromWaveLength(380.0 + (i * 400.0 / ColormapSize));
-}
-
-RenderThread::~RenderThread()
-{
-    m_mutex.lock();
-    m_abort = true;
-    m_condition.wakeOne();
-    m_mutex.unlock();
-
-    wait();
-}
-
-void RenderThread::render(double centerX, double centerY, double scaleFactor, QSize resultSize,
-                          double devicePixelRatio)
-{
-    QMutexLocker locker(&m_mutex);
-
-    m_centerX = centerX;
-    m_centerY = centerY;
-    m_scaleFactor = scaleFactor;
-    m_devicePixelRatio = devicePixelRatio;
-    m_resultSize = resultSize;
-
-    if (!isRunning())
-    {
-        start(LowPriority);
-    }
-    else
-    {
-        m_restart = true;
-        m_condition.wakeOne();
-    }
-}
-
-void RenderThread::run()
-{
-    forever
-    {
-        m_mutex.lock();
-        const double devicePixelRatio = m_devicePixelRatio;
-        const QSize resultSize = m_resultSize * devicePixelRatio;
-        const double requestedScaleFactor = m_scaleFactor;
-        const double scaleFactor = requestedScaleFactor / devicePixelRatio;
-        const double centerX = m_centerX;
-        const double centerY = m_centerY;
-        m_mutex.unlock();
-
-        int halfWidth = resultSize.width() / 2;
-        int halfHeight = resultSize.height() / 2;
-        QImage image(resultSize, QImage::Format_RGB32);
-        image.setDevicePixelRatio(devicePixelRatio);
-
-        const int NumPasses = 8;
-        int pass = 0;
-        while (pass < NumPasses)
-        {
-            const int MaxIterations = (1 << (2 * pass + 6)) + 32;
-            const int Limit = 4;
-            bool allBlack = true;
-
-            for (int y = -halfHeight; y < halfHeight; ++y)
-            {
-                if (m_restart)
-                    break;
-                if (m_abort)
-                    return;
-
-                auto scanLine = reinterpret_cast<uint*>(image.scanLine(y + halfHeight));
-                const double ay = centerY + (y * scaleFactor);
-
-                for (int x = -halfWidth; x < halfWidth; ++x)
-                {
-                    const double ax = centerX + (x * scaleFactor);
-                    double a1 = ax;
-                    double b1 = ay;
-                    int numIterations = 0;
-
-                    do
-                    {
-                        ++numIterations;
-                        const double a2 = (a1 * a1) - (b1 * b1) + ax;
-                        const double b2 = (2 * a1 * b1) + ay;
-                        if ((a2 * a2) + (b2 * b2) > Limit)
-                            break;
-
-                        ++numIterations;
-                        a1 = (a2 * a2) - (b2 * b2) + ax;
-                        b1 = (2 * a2 * b2) + ay;
-                        if ((a1 * a1) + (b1 * b1) > Limit)
-                            break;
-                    } while (numIterations < MaxIterations);
-
-                    if (numIterations < MaxIterations)
-                    {
-                        *scanLine++ = m_colormap[numIterations % ColormapSize];
-                        allBlack = false;
-                    }
-                    else
-                    {
-                        *scanLine++ = qRgb(0, 0, 0);
-                    }
-                }
-            }
-
-            if (allBlack && pass == 0)
-            {
-                pass = 4;
-            }
-            else
-            {
-                if (!m_restart)
-                    emit renderedImage(image, requestedScaleFactor);
-                ++pass;
-            }
-        }
-
-        m_mutex.lock();
-        if (!m_restart)
-            m_condition.wait(&m_mutex);
-        m_restart = false;
-        m_mutex.unlock();
-    }
-}
-
-uint RenderThread::rgbFromWaveLength(double wave)
-{
-    double r = 0;
-    double g = 0;
-    double b = 0;
-
-    if (wave >= 380.0 && wave <= 440.0)
-    {
-        r = -1.0 * (wave - 440.0) / (440.0 - 380.0);
-        b = 1.0;
-    }
-    else if (wave >= 440.0 && wave <= 490.0)
-    {
-        g = (wave - 440.0) / (490.0 - 440.0);
-        b = 1.0;
-    }
-    else if (wave >= 490.0 && wave <= 510.0)
-    {
-        g = 1.0;
-        b = -1.0 * (wave - 510.0) / (510.0 - 490.0);
-    }
-    else if (wave >= 510.0 && wave <= 580.0)
-    {
-        r = (wave - 510.0) / (580.0 - 510.0);
-        g = 1.0;
-    }
-    else if (wave >= 580.0 && wave <= 645.0)
-    {
-        r = 1.0;
-        g = -1.0 * (wave - 645.0) / (645.0 - 580.0);
-    }
-    else if (wave >= 645.0 && wave <= 780.0)
-    {
-        r = 1.0;
-    }
-
-    double s = 1.0;
-    if (wave > 700.0)
-        s = 0.3 + 0.7 * (780.0 - wave) / (780.0 - 700.0);
-    else if (wave < 420.0)
-        s = 0.3 + 0.7 * (wave - 380.0) / (420.0 - 380.0);
-
-    r = std::pow(r * s, 0.8);
-    g = std::pow(g * s, 0.8);
-    b = std::pow(b * s, 0.8);
-    return qRgb(int(r * 255), int(g * 255), int(b * 255));
-}
diff --git a/static/source/qt5-mandelbrot/renderthread.h b/static/source/qt5-mandelbrot/renderthread.h
deleted file mode 100644
index f344a9c2b224..000000000000
--- a/static/source/qt5-mandelbrot/renderthread.h
+++ /dev/null
@@ -1,94 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2016 The Qt Company Ltd.
-** Contact: https://www.qt.io/licensing/
-**
-** This file is part of the examples of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:BSD$
-** Commercial License Usage
-** Licensees holding valid commercial Qt licenses may use this file in
-** accordance with the commercial license agreement provided with the
-** Software or, alternatively, in accordance with the terms contained in
-** a written agreement between you and The Qt Company. For licensing terms
-** and conditions see https://www.qt.io/terms-conditions. For further
-** information use the contact form at https://www.qt.io/contact-us.
-**
-** BSD License Usage
-** Alternatively, you may use this file under the terms of the BSD license
-** as follows:
-**
-** "Redistribution and use in source and binary forms, with or without
-** modification, are permitted provided that the following conditions are
-** met:
-**   * Redistributions of source code must retain the above copyright
-**     notice, this list of conditions and the following disclaimer.
-**   * Redistributions in binary form must reproduce the above copyright
-**     notice, this list of conditions and the following disclaimer in
-**     the documentation and/or other materials provided with the
-**     distribution.
-**   * Neither the name of The Qt Company Ltd nor the names of its
-**     contributors may be used to endorse or promote products derived
-**     from this software without specific prior written permission.
-**
-**
-** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#pragma once
-
-#include <QtCore/QMutex>
-#include <QtCore/QSize>
-#include <QtCore/QThread>
-#include <QtCore/QWaitCondition>
-
-QT_BEGIN_NAMESPACE
-class QImage;
-QT_END_NAMESPACE
-
-class RenderThread : public QThread
-{
-    Q_OBJECT
-
-public:
-    RenderThread(QObject* parent = nullptr);
-    ~RenderThread();
-
-    void render(double centerX, double centerY, double scaleFactor, QSize resultSize,
-                double devicePixelRatio);
-
-signals:
-    void renderedImage(const QImage& image, double scaleFactor);
-
-protected:
-    void run() override;
-
-private:
-    static uint rgbFromWaveLength(double wave);
-
-    QMutex m_mutex;
-    QWaitCondition m_condition;
-    double m_centerX;
-    double m_centerY;
-    double m_scaleFactor;
-    double m_devicePixelRatio;
-    QSize m_resultSize;
-    bool m_restart = false;
-    bool m_abort = false;
-
-    static constexpr int ColormapSize = 512;
-    uint m_colormap[ColormapSize];
-};