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graph.h
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173 lines (141 loc) · 4.34 KB
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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** 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."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef GRAPH_H
#define GRAPH_H
#define DUMPEXPRESSION(expression) #expression << " = " << (expression)
#include <limits>
#include <QQuickItem>
#include <QtGui/QMatrix4x4>
const QPoint gIncorrectPosition(std::numeric_limits<int>::min(),
std::numeric_limits<int>::min());
class Graph : public QQuickItem
{
Q_OBJECT
Q_PROPERTY(QColor lineColor READ getLineColor WRITE setLineColor NOTIFY lineColorChanged)
public:
Graph();
QColor getLineColor() const
{
return mLineColor;
}
protected:
QSGNode *updatePaintNode(QSGNode *, UpdatePaintNodeData *);
void geometryChanged(const QRectF &newGeometry, const QRectF &oldGeometry);
void wheelEvent(QWheelEvent * e) override;
void mousePressEvent(QMouseEvent * e) override;
void mouseReleaseEvent(QMouseEvent * e) override;
// void mouseMoveEvent(QMouseEvent * e) override;
Q_SIGNALS:
void lineColorChanged(const QColor newLineColor);
public slots:
void appendSample(qreal value);
void removeFirstSample();
void append(const QPointF point_)
{
m_points << point_;
m_changed = true;
update();
}
void resetViewMatrix()
{
qDebug() << Q_FUNC_INFO;
dx = 0;
dy = 0;
updateMatrices();
update();
}
void resetProjectionMatrix()
{
qDebug() << Q_FUNC_INFO;
zoomLevel = 0;
updateMatrices();
update();
}
void resetVP()
{
qDebug() << Q_FUNC_INFO;
zoomLevel = 0;
dx = 0;
dy = 0;
updateMatrices();
update();
}
void shiftScene(const int xStepInScreenPixels,
const int yStepInScreenPixels);
void setLineColor(QColor newColor)
{
if (mLineColor == newColor)
return;
m_colorChanged = true;
mLineColor = newColor;
Q_EMIT(lineColorChanged(mLineColor));
update();
}
void updateNDC()
{
qDebug() << Q_FUNC_INFO;
m_NDCChanged = true;
update();
}
void addStaticRawLog();
private Q_SLOTS:
void onWindowChanged(QQuickWindow * window);
void onWindowHeightChanged(int windowHeight);
void onWindowWidthChanged(int windowWidth);
private:
void updateMatrices();
private:
QList<qreal> m_samples;
QList<QPointF> m_points;
bool m_changed;
bool m_geometryChanged;
bool m_NDCChanged = true;
QMatrix4x4 mView = QMatrix4x4();
QMatrix4x4 mProjection = QMatrix4x4();
QMatrix4x4 mInverseVP = QMatrix4x4();
double zoomLevel = 0;
double dx = 0;
double dy = 0;
bool m_VPChanged = true;
QPoint mLastPosition = gIncorrectPosition;
QColor mLineColor = QColor("steelblue");
bool m_colorChanged = true;
};
#endif // GRAPH_H