chartcategoryaxisx.cpp
131 lines
| 4.5 KiB
| text/x-c
|
CppLexer
Marek Rosa
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r1701 | /**************************************************************************** | ||
| ** | ||||
| ** 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 | ||||
| ** $QT_END_LICENSE$ | ||||
| ** | ||||
| ****************************************************************************/ | ||||
|
Marek Rosa
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r1817 | #include "chartcategoryaxisx_p.h" | ||
| #include "qcategoryaxis.h" | ||||
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r1701 | #include "qabstractaxis.h" | ||
| #include "chartpresenter_p.h" | ||||
| #include <QGraphicsLayout> | ||||
| #include <QFontMetrics> | ||||
Michal Klocek
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r1735 | #include <qmath.h> | ||
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r1701 | |||
| static int label_padding = 5; | ||||
| QTCOMMERCIALCHART_BEGIN_NAMESPACE | ||||
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r1817 | ChartCategoryAxisX::ChartCategoryAxisX(QAbstractAxis *axis,ChartPresenter *presenter) : ChartAxis(axis,presenter) | ||
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r1701 | { | ||
| } | ||||
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r1817 | ChartCategoryAxisX::~ChartCategoryAxisX() | ||
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r1701 | { | ||
| } | ||||
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r1817 | QVector<qreal> ChartCategoryAxisX::calculateLayout() const | ||
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r1701 | { | ||
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r1816 | QCategoryAxis *axis = qobject_cast<QCategoryAxis *>(m_chartAxis); | ||
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r1829 | int tickCount = axis->categoriesLabels().count() + 1; | ||
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r1701 | QVector<qreal> points; | ||
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r1708 | |||
| if (tickCount < 2) | ||||
| return points; | ||||
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r1846 | qreal range = axis->max() - axis->min(); | ||
| if (range > 0) { | ||||
| points.resize(tickCount); | ||||
| qreal scale = m_rect.width() / range; | ||||
| for (int i = 0; i < tickCount; ++i) | ||||
| if (i < tickCount - 1) { | ||||
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r1847 | int x = (axis->startValue(axis->categoriesLabels().at(i)) - axis->min()) * scale + m_rect.left(); | ||
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r1846 | points[i] = x; | ||
| } else { | ||||
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r1847 | int x = (axis->endValue(axis->categoriesLabels().at(i - 1)) - axis->min()) * scale + m_rect.left(); | ||
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r1846 | points[i] = x; | ||
| } | ||||
| } | ||||
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r1701 | return points; | ||
| } | ||||
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r1817 | void ChartCategoryAxisX::updateGeometry() | ||
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r1701 | { | ||
| const QVector<qreal>& layout = ChartAxis::layout(); | ||||
| m_minWidth = 0; | ||||
| m_minHeight = 0; | ||||
| if(layout.isEmpty()) return; | ||||
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r1816 | QCategoryAxis *intervalAxis = qobject_cast<QCategoryAxis *>(m_chartAxis); | ||
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r1701 | |||
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r1829 | QStringList ticksList = intervalAxis->categoriesLabels(); | ||
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r1701 | |||
| // createNumberLabels(ticksList,m_min,m_max,layout.size()); | ||||
| QList<QGraphicsItem *> lines = m_grid->childItems(); | ||||
| QList<QGraphicsItem *> labels = m_labels->childItems(); | ||||
| QList<QGraphicsItem *> shades = m_shades->childItems(); | ||||
|
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r1729 | QList<QGraphicsItem *> axis = m_arrow->childItems(); | ||
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r1701 | |||
| // Q_ASSERT(labels.size() == ticksList.size()); | ||||
| // Q_ASSERT(layout.size() == ticksList.size()); | ||||
| QGraphicsLineItem *lineItem = static_cast<QGraphicsLineItem*>(axis.at(0)); | ||||
| lineItem->setLine(m_rect.left(), m_rect.bottom(), m_rect.right(), m_rect.bottom()); | ||||
| // qreal width = 0; | ||||
| for (int i = 0; i < layout.size(); ++i) { | ||||
| QGraphicsLineItem *lineItem = static_cast<QGraphicsLineItem*>(lines.at(i)); | ||||
| lineItem->setLine(layout[i], m_rect.top(), layout[i], m_rect.bottom()); | ||||
| QGraphicsSimpleTextItem *labelItem = static_cast<QGraphicsSimpleTextItem*>(labels.at(i)); | ||||
| if (i < ticksList.count()) { | ||||
| labelItem->setText(ticksList.at(i)); | ||||
| } | ||||
| const QRectF& rect = labelItem->boundingRect(); | ||||
| QPointF center = rect.center(); | ||||
| labelItem->setTransformOriginPoint(center.x(), center.y()); | ||||
| if (i < ticksList.count()) | ||||
| labelItem->setPos(layout[i] + (layout[i + 1] - layout[i]) / 2 - center.x(), m_rect.bottom() + label_padding); | ||||
| else | ||||
| labelItem->setPos(layout[i] - center.x(), m_rect.bottom() + label_padding); | ||||
| if(labelItem->pos().x() > m_rect.width() + m_rect.left() - rect.width() / 2){ | ||||
| labelItem->setVisible(false); | ||||
| lineItem->setVisible(false); | ||||
| } | ||||
| m_minWidth += rect.width(); | ||||
|
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r1837 | m_minHeight = qMax(rect.height()+ label_padding, m_minHeight); | ||
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r1701 | |||
| if ((i + 1) % 2 && i > 1) { | ||||
| QGraphicsRectItem *rectItem = static_cast<QGraphicsRectItem*>(shades.at(i / 2 - 1)); | ||||
| rectItem->setRect(layout[i - 1],m_rect.top(),layout[i]-layout[i - 1],m_rect.height()); | ||||
| } | ||||
| lineItem = static_cast<QGraphicsLineItem*>(axis.at(i+1)); | ||||
| lineItem->setLine(layout[i],m_rect.bottom(),layout[i], m_rect.bottom() + 5); | ||||
| } | ||||
| } | ||||
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r1817 | void ChartCategoryAxisX::handleAxisUpdated() | ||
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r1777 | { | ||
| updateGeometry(); | ||||
| ChartAxis::handleAxisUpdated(); | ||||
| } | ||||
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r1701 | QTCOMMERCIALCHART_END_NAMESPACE | ||