polarchartlayout.cpp
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| 3.3 KiB
| text/x-c
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r2854 | /**************************************************************************** | ||
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r2483 | ** | ||
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r2854 | ** Copyright (C) 2016 The Qt Company Ltd. | ||
** Contact: https://www.qt.io/licensing/ | ||||
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r2483 | ** | ||
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r2854 | ** This file is part of the Qt Charts module of the Qt Toolkit. | ||
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r2483 | ** | ||
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r2854 | ** $QT_BEGIN_LICENSE:GPL$ | ||
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r2845 | ** 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 | ||||
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r2854 | ** 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. | ||||
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r2483 | ** | ||
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r2845 | ** $QT_END_LICENSE$ | ||
** | ||||
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r2854 | ****************************************************************************/ | ||
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r2483 | |||
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r2714 | #include <private/polarchartlayout_p.h> | ||
#include <private/chartpresenter_p.h> | ||||
#include <private/polarchartaxis_p.h> | ||||
#include <QtCore/QDebug> | ||||
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r2712 | QT_CHARTS_BEGIN_NAMESPACE | ||
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static const qreal golden_ratio = 0.4; | ||||
PolarChartLayout::PolarChartLayout(ChartPresenter *presenter) | ||||
: AbstractChartLayout(presenter) | ||||
{ | ||||
} | ||||
PolarChartLayout::~PolarChartLayout() | ||||
{ | ||||
} | ||||
QRectF PolarChartLayout::calculateAxisGeometry(const QRectF &geometry, const QList<ChartAxisElement *> &axes) const | ||||
{ | ||||
// How to handle multiple angular/radial axes? | ||||
qreal axisRadius = geometry.height() / 2.0; | ||||
if (geometry.width() < geometry.height()) | ||||
axisRadius = geometry.width() / 2.0; | ||||
int titleHeight = 0; | ||||
foreach (ChartAxisElement *chartAxis, axes) { | ||||
if (!chartAxis->isVisible()) | ||||
continue; | ||||
PolarChartAxis *polarChartAxis = static_cast<PolarChartAxis *>(chartAxis); | ||||
qreal radius = polarChartAxis->preferredAxisRadius(geometry.size()); | ||||
if (radius < axisRadius) | ||||
axisRadius = radius; | ||||
if (chartAxis->axis()->orientation() == Qt::Horizontal | ||||
&& chartAxis->axis()->isTitleVisible() | ||||
&& !chartAxis->axis()->titleText().isEmpty()) { | ||||
// If axis has angular title, adjust geometry down by the space title takes | ||||
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r2539 | QRectF dummyRect = ChartPresenter::textBoundingRect(chartAxis->axis()->titleFont(), chartAxis->axis()->titleText()); | ||
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r2530 | titleHeight = (dummyRect.height() / 2.0) + chartAxis->titlePadding(); | ||
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r2483 | } | ||
} | ||||
QRectF axisRect; | ||||
axisRect.setSize(QSizeF(axisRadius * 2.0, axisRadius * 2.0)); | ||||
axisRect.moveCenter(geometry.center()); | ||||
axisRect.adjust(0, titleHeight, 0, titleHeight); | ||||
foreach (ChartAxisElement *chartAxis, axes) | ||||
chartAxis->setGeometry(axisRect, QRectF()); | ||||
return axisRect; | ||||
} | ||||
QRectF PolarChartLayout::calculateAxisMinimum(const QRectF &minimum, const QList<ChartAxisElement *> &axes) const | ||||
{ | ||||
Q_UNUSED(axes); | ||||
return minimum; | ||||
} | ||||
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r2712 | QT_CHARTS_END_NAMESPACE | ||