chartdatetimeaxisx.cpp
106 lines
| 2.8 KiB
| text/x-c
|
CppLexer
Marek Rosa
|
r1717 | /**************************************************************************** | ||
| ** | ||||
| ** Copyright (C) 2012 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 "chartdatetimeaxisx_p.h" | ||||
| #include "chartpresenter_p.h" | ||||
| #include "qdatetimeaxis.h" | ||||
| #include <QGraphicsLayout> | ||||
| #include <QDateTime> | ||||
Michal Klocek
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r1735 | #include <QFontMetrics> | ||
| #include <qmath.h> | ||||
|
Marek Rosa
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r1717 | QTCOMMERCIALCHART_BEGIN_NAMESPACE | ||
|
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r2111 | ChartDateTimeAxisX::ChartDateTimeAxisX(QDateTimeAxis *axis,ChartPresenter *presenter) : HorizontalAxis(axis,presenter), | ||
| m_tickCount(0),m_axis(axis) | ||||
|
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r1717 | { | ||
| } | ||||
| ChartDateTimeAxisX::~ChartDateTimeAxisX() | ||||
| { | ||||
| } | ||||
| QVector<qreal> ChartDateTimeAxisX::calculateLayout() const | ||||
| { | ||||
|
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r2105 | Q_ASSERT(m_tickCount>=2); | ||
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r1717 | |||
| QVector<qreal> points; | ||||
| points.resize(m_tickCount); | ||||
|
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r2111 | const QRectF& gridRect = gridGeometry(); | ||
| const qreal deltaX = gridRect.width()/(m_tickCount-1); | ||||
|
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r1717 | for (int i = 0; i < m_tickCount; ++i) { | ||
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r2111 | int x = i * deltaX + gridRect.left(); | ||
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r1717 | points[i] = x; | ||
| } | ||||
| return points; | ||||
| } | ||||
| void ChartDateTimeAxisX::updateGeometry() | ||||
| { | ||||
| const QVector<qreal>& layout = ChartAxis::layout(); | ||||
|
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r2105 | if(layout.isEmpty()) return; | ||
|
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r2111 | setLabels(createDateTimeLabels(m_axis->format(),layout.size())); | ||
| HorizontalAxis::updateGeometry(); | ||||
|
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r1717 | } | ||
| void ChartDateTimeAxisX::handleAxisUpdated() | ||||
| { | ||||
|
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r2111 | m_tickCount = m_axis->tickCount(); | ||
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r1717 | ChartAxis::handleAxisUpdated(); | ||
| } | ||||
|
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r2105 | QSizeF ChartDateTimeAxisX::sizeHint(Qt::SizeHint which, const QSizeF& constraint) const | ||
|
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r1965 | { | ||
| Q_UNUSED(constraint) | ||||
|
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r2111 | QFontMetrics fn(font()); | ||
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r1965 | QSizeF sh; | ||
|
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r2105 | switch (which) { | ||
| case Qt::MinimumSize: | ||||
| sh = QSizeF(fn.boundingRect("...").width(),fn.height()); | ||||
| break; | ||||
| case Qt::PreferredSize:{ | ||||
| const QVector<qreal>& layout = ChartAxis::layout(); | ||||
| if(layout.isEmpty()) break; | ||||
| QStringList ticksList; | ||||
| qreal width=0; | ||||
| qreal height=0; | ||||
| for (int i = 0; i < ticksList.size(); ++i) | ||||
| { | ||||
| QRectF rect = fn.boundingRect(ticksList.at(i)); | ||||
| width+=rect.width(); | ||||
|
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r2112 | height+=qMax(rect.height()+labelPadding(),height); | ||
|
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r2105 | } | ||
| sh = QSizeF(width,height); | ||||
|
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r1965 | break; | ||
| } | ||||
|
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r2105 | default: | ||
| break; | ||||
| } | ||||
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r1965 | |||
|
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r2105 | return sh; | ||
|
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r1965 | } | ||
|
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r1717 | QTCOMMERCIALCHART_END_NAMESPACE | ||