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authorJan-Marek Glogowski <glogow@fbihome.de>2022-01-09 02:15:12 +0100
committerJan-Marek Glogowski <glogow@fbihome.de>2022-01-19 20:18:29 +0100
commit49ebfdd9b7cf9c5363e3e06765b3fae284ab0379 (patch)
tree09b7c894e46b543983a6c25b458037554e5b77cb /wasm-qt/source/qt5-mandelbrot/mandelbrotwidget.cxx
parentbd5492275d31f59b1d269205018d1487af52426f (diff)
WASM merge wasm-qt into static module
Change-Id: I1ed26685561fd79d26cc0844faa3dfe4c00d439a Reviewed-on: https://gerrit.libreoffice.org/c/core/+/128625 Tested-by: Jenkins Reviewed-by: Jan-Marek Glogowski <glogow@fbihome.de>
Diffstat (limited to 'wasm-qt/source/qt5-mandelbrot/mandelbrotwidget.cxx')
-rw-r--r--wasm-qt/source/qt5-mandelbrot/mandelbrotwidget.cxx228
1 files changed, 0 insertions, 228 deletions
diff --git a/wasm-qt/source/qt5-mandelbrot/mandelbrotwidget.cxx b/wasm-qt/source/qt5-mandelbrot/mandelbrotwidget.cxx
deleted file mode 100644
index 5886dd2664c0..000000000000
--- a/wasm-qt/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());
-}