xydomain.cpp
213 lines
| 5.8 KiB
| text/x-c
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CppLexer
winter
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r0 | /**************************************************************************** | ||
** | ||||
** Copyright (C) 2016 The Qt Company Ltd. | ||||
** Contact: https://www.qt.io/licensing/ | ||||
** | ||||
** This file is part of the Qt Charts module of the Qt Toolkit. | ||||
** | ||||
** $QT_BEGIN_LICENSE:GPL$ | ||||
** 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. | ||||
** | ||||
** GNU General Public License Usage | ||||
** Alternatively, this file may be used under the terms of the GNU | ||||
** General Public License version 3 or (at your option) any later version | ||||
** approved by the KDE Free Qt Foundation. The licenses are as published by | ||||
** the Free Software Foundation and appearing in the file LICENSE.GPL3 | ||||
** included in the packaging of this file. Please review the following | ||||
** information to ensure the GNU General Public License requirements will | ||||
** be met: https://www.gnu.org/licenses/gpl-3.0.html. | ||||
** | ||||
** $QT_END_LICENSE$ | ||||
** | ||||
****************************************************************************/ | ||||
#include <private/xydomain_p.h> | ||||
#include <private/qabstractaxis_p.h> | ||||
#include <QtCore/QtMath> | ||||
QT_CHARTS_BEGIN_NAMESPACE | ||||
XYDomain::XYDomain(QObject *parent) | ||||
: AbstractDomain(parent) | ||||
{ | ||||
} | ||||
XYDomain::~XYDomain() | ||||
{ | ||||
} | ||||
void XYDomain::setRange(qreal minX, qreal maxX, qreal minY, qreal maxY) | ||||
{ | ||||
bool axisXChanged = false; | ||||
bool axisYChanged = false; | ||||
if (!qFuzzyCompare(m_minX, minX) || !qFuzzyCompare(m_maxX, maxX)) { | ||||
m_minX = minX; | ||||
m_maxX = maxX; | ||||
axisXChanged = true; | ||||
if(!m_signalsBlocked) | ||||
emit rangeHorizontalChanged(m_minX, m_maxX); | ||||
} | ||||
if (!qFuzzyCompare(m_minY, minY) || !qFuzzyCompare(m_maxY, maxY)) { | ||||
m_minY = minY; | ||||
m_maxY = maxY; | ||||
axisYChanged = true; | ||||
if(!m_signalsBlocked) | ||||
emit rangeVerticalChanged(m_minY, m_maxY); | ||||
} | ||||
if (axisXChanged || axisYChanged) | ||||
emit updated(); | ||||
} | ||||
void XYDomain::zoomIn(const QRectF &rect) | ||||
{ | ||||
storeZoomReset(); | ||||
qreal dx = spanX() / m_size.width(); | ||||
qreal dy = spanY() / m_size.height(); | ||||
qreal maxX = m_maxX; | ||||
qreal minX = m_minX; | ||||
qreal minY = m_minY; | ||||
qreal maxY = m_maxY; | ||||
maxX = minX + dx * rect.right(); | ||||
minX = minX + dx * rect.left(); | ||||
minY = maxY - dy * rect.bottom(); | ||||
maxY = maxY - dy * rect.top(); | ||||
if ((maxX - minX) == spanX()) { | ||||
minX = m_minX; | ||||
maxX = m_maxX; | ||||
} | ||||
if ((maxY - minY) == spanY()) { | ||||
minY = m_minY; | ||||
maxY = m_maxY; | ||||
} | ||||
setRange(minX, maxX, minY, maxY); | ||||
} | ||||
void XYDomain::zoomOut(const QRectF &rect) | ||||
{ | ||||
storeZoomReset(); | ||||
qreal dx = spanX() / rect.width(); | ||||
qreal dy = spanY() / rect.height(); | ||||
qreal maxX = m_maxX; | ||||
qreal minX = m_minX; | ||||
qreal minY = m_minY; | ||||
qreal maxY = m_maxY; | ||||
minX = maxX - dx * rect.right(); | ||||
maxX = minX + dx * m_size.width(); | ||||
maxY = minY + dy * rect.bottom(); | ||||
minY = maxY - dy * m_size.height(); | ||||
if ((maxX - minX) == spanX()) { | ||||
minX = m_minX; | ||||
maxX = m_maxX; | ||||
} | ||||
if ((maxY - minY) == spanY()) { | ||||
minY = m_minY; | ||||
maxY = m_maxY; | ||||
} | ||||
setRange(minX, maxX, minY, maxY); | ||||
} | ||||
void XYDomain::move(qreal dx, qreal dy) | ||||
{ | ||||
qreal x = spanX() / m_size.width(); | ||||
qreal y = spanY() / m_size.height(); | ||||
qreal maxX = m_maxX; | ||||
qreal minX = m_minX; | ||||
qreal minY = m_minY; | ||||
qreal maxY = m_maxY; | ||||
if (dx != 0) { | ||||
minX = minX + x * dx; | ||||
maxX = maxX + x * dx; | ||||
} | ||||
if (dy != 0) { | ||||
minY = minY + y * dy; | ||||
maxY = maxY + y * dy; | ||||
} | ||||
setRange(minX, maxX, minY, maxY); | ||||
} | ||||
QPointF XYDomain::calculateGeometryPoint(const QPointF &point, bool &ok) const | ||||
{ | ||||
const qreal deltaX = m_size.width() / (m_maxX - m_minX); | ||||
const qreal deltaY = m_size.height() / (m_maxY - m_minY); | ||||
qreal x = (point.x() - m_minX) * deltaX; | ||||
qreal y = (point.y() - m_minY) * -deltaY + m_size.height(); | ||||
ok = true; | ||||
return QPointF(x, y); | ||||
} | ||||
QVector<QPointF> XYDomain::calculateGeometryPoints(const QVector<QPointF> &vector) const | ||||
{ | ||||
const qreal deltaX = m_size.width() / (m_maxX - m_minX); | ||||
const qreal deltaY = m_size.height() / (m_maxY - m_minY); | ||||
QVector<QPointF> result; | ||||
result.resize(vector.count()); | ||||
for (int i = 0; i < vector.count(); ++i) { | ||||
qreal x = (vector[i].x() - m_minX) * deltaX; | ||||
qreal y = (vector[i].y() - m_minY) * -deltaY + m_size.height(); | ||||
result[i].setX(x); | ||||
result[i].setY(y); | ||||
} | ||||
return result; | ||||
} | ||||
QPointF XYDomain::calculateDomainPoint(const QPointF &point) const | ||||
{ | ||||
const qreal deltaX = m_size.width() / (m_maxX - m_minX); | ||||
const qreal deltaY = m_size.height() / (m_maxY - m_minY); | ||||
qreal x = point.x() / deltaX + m_minX; | ||||
qreal y = (point.y() - m_size.height()) / (-deltaY) + m_minY; | ||||
return QPointF(x, y); | ||||
} | ||||
// operators | ||||
bool Q_AUTOTEST_EXPORT operator== (const XYDomain &domain1, const XYDomain &domain2) | ||||
{ | ||||
return (qFuzzyCompare(domain1.m_maxX, domain2.m_maxX) | ||||
&& qFuzzyCompare(domain1.m_maxY, domain2.m_maxY) | ||||
&& qFuzzyCompare(domain1.m_minX, domain2.m_minX) | ||||
&& qFuzzyCompare(domain1.m_minY, domain2.m_minY)); | ||||
} | ||||
bool Q_AUTOTEST_EXPORT operator!= (const XYDomain &domain1, const XYDomain &domain2) | ||||
{ | ||||
return !(domain1 == domain2); | ||||
} | ||||
QDebug Q_AUTOTEST_EXPORT operator<<(QDebug dbg, const XYDomain &domain) | ||||
{ | ||||
#ifdef QT_NO_TEXTSTREAM | ||||
Q_UNUSED(domain) | ||||
#else | ||||
dbg.nospace() << "AbstractDomain(" << domain.m_minX << ',' << domain.m_maxX << ',' << domain.m_minY << ',' << domain.m_maxY << ')' << domain.m_size; | ||||
#endif | ||||
return dbg.maybeSpace(); | ||||
} | ||||
#include "moc_xydomain_p.cpp" | ||||
QT_CHARTS_END_NAMESPACE | ||||