polarchartlayout.cpp
83 lines
| 2.7 KiB
| text/x-c
|
CppLexer
Miikka Heikkinen
|
r2483 | /**************************************************************************** | ||
| ** | ||||
| ** Copyright (C) 2013 Digia Plc | ||||
| ** All rights reserved. | ||||
| ** For any questions to Digia, please use contact form at http://qt.digia.com | ||||
| ** | ||||
| ** This file is part of the Qt Commercial Charts Add-on. | ||||
| ** | ||||
| ** $QT_BEGIN_LICENSE$ | ||||
| ** Licensees holding valid Qt Commercial licenses may use this file in | ||||
| ** accordance with the Qt Commercial License Agreement provided with the | ||||
| ** Software or, alternatively, in accordance with the terms contained in | ||||
| ** a written agreement between you and Digia. | ||||
| ** | ||||
| ** If you have questions regarding the use of this file, please use | ||||
| ** contact form at http://qt.digia.com | ||||
| ** $QT_END_LICENSE$ | ||||
| ** | ||||
| ****************************************************************************/ | ||||
| #include "polarchartlayout_p.h" | ||||
| #include "chartpresenter_p.h" | ||||
| #include "polarchartaxis_p.h" | ||||
| #include <QDebug> | ||||
| #include <QFontMetrics> | ||||
| QTCOMMERCIALCHART_BEGIN_NAMESPACE | ||||
| 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 | ||||
| QFontMetrics titleMetrics(chartAxis->axis()->titleFont()); | ||||
| titleHeight = (titleMetrics.boundingRect(chartAxis->axis()->titleText()).height() / 2) + chartAxis->titlePadding(); | ||||
| } | ||||
| } | ||||
| 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; | ||||
| } | ||||
| QTCOMMERCIALCHART_END_NAMESPACE | ||||