chartvalueaxisy.cpp
126 lines
| 3.9 KiB
| text/x-c
|
CppLexer
Marek Rosa
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r1555 | /**************************************************************************** | ||
| ** | ||||
| ** 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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r1805 | #include "chartvalueaxisy_p.h" | ||
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r1555 | #include "qabstractaxis.h" | ||
| #include "chartpresenter_p.h" | ||||
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r1805 | #include "qvalueaxis.h" | ||
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r1555 | #include <QGraphicsLayout> | ||
| #include <QFontMetrics> | ||||
Michal Klocek
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r1735 | #include <qmath.h> | ||
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r1555 | |||
| static int label_padding = 5; | ||||
| QTCOMMERCIALCHART_BEGIN_NAMESPACE | ||||
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r1805 | ChartValueAxisY::ChartValueAxisY(QAbstractAxis *axis,ChartPresenter *presenter) : ChartAxis(axis,presenter), | ||
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r1698 | m_tickCount(0) | ||
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r1555 | { | ||
| } | ||||
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r1805 | ChartValueAxisY::~ChartValueAxisY() | ||
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r1555 | { | ||
| } | ||||
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r1805 | QVector<qreal> ChartValueAxisY::calculateLayout() const | ||
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r1555 | { | ||
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r1698 | Q_ASSERT(m_tickCount>=2); | ||
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r1555 | |||
| QVector<qreal> points; | ||||
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r1698 | points.resize(m_tickCount); | ||
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r1555 | |||
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r1698 | const qreal deltaY = m_rect.height()/(m_tickCount-1); | ||
| for (int i = 0; i < m_tickCount; ++i) { | ||||
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r1561 | int y = i * -deltaY + m_rect.bottom(); | ||
| points[i] = y; | ||||
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r1555 | } | ||
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r1561 | |||
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r1555 | return points; | ||
| } | ||||
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r1805 | void ChartValueAxisY::updateGeometry() | ||
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r1555 | { | ||
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r1561 | const QVector<qreal> &layout = ChartAxis::layout(); | ||
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r1555 | m_minWidth = 0; | ||
| m_minHeight = 0; | ||||
| if(layout.isEmpty()) return; | ||||
| QStringList ticksList; | ||||
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r1577 | createNumberLabels(ticksList,m_min,m_max,layout.size()); | ||
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r1555 | |||
| 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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r1555 | |||
| Q_ASSERT(labels.size() == ticksList.size()); | ||||
| Q_ASSERT(layout.size() == ticksList.size()); | ||||
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r1561 | qreal height = 2*m_rect.bottom(); | ||
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r1555 | QGraphicsLineItem *lineItem = static_cast<QGraphicsLineItem*>(axis.at(0)); | ||
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r1561 | lineItem->setLine(m_rect.left() , m_rect.top(), m_rect.left(), m_rect.bottom()); | ||
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r1555 | |||
| for (int i = 0; i < layout.size(); ++i) { | ||||
| QGraphicsLineItem *lineItem = static_cast<QGraphicsLineItem*>(lines.at(i)); | ||||
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r1561 | lineItem->setLine(m_rect.left() , layout[i], m_rect.right(), layout[i]); | ||
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r1555 | QGraphicsSimpleTextItem *labelItem = static_cast<QGraphicsSimpleTextItem*>(labels.at(i)); | ||
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r1561 | |||
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r1555 | labelItem->setText(ticksList.at(i)); | ||
| const QRectF& rect = labelItem->boundingRect(); | ||||
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r1561 | |||
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r1555 | QPointF center = rect.center(); | ||
| labelItem->setTransformOriginPoint(center.x(), center.y()); | ||||
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r1561 | labelItem->setPos(m_rect.left() - rect.width() - label_padding , layout[i]-center.y()); | ||
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r1555 | |||
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r1561 | if(labelItem->pos().y()+rect.height()>height) { | ||
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r1555 | labelItem->setVisible(false); | ||
| lineItem->setVisible(false); | ||||
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r1561 | } | ||
| else { | ||||
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r1555 | labelItem->setVisible(true); | ||
| lineItem->setVisible(true); | ||||
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r1561 | height=labelItem->pos().y(); | ||
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r1555 | } | ||
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r1561 | |||
| m_minWidth=qMax(rect.width()+label_padding,m_minWidth); | ||||
| m_minHeight+=rect.height(); | ||||
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r1555 | |||
| if ((i+1)%2 && i>1) { | ||||
| QGraphicsRectItem *rectItem = static_cast<QGraphicsRectItem*>(shades.at(i/2-1)); | ||||
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r1561 | rectItem->setRect(m_rect.left(),layout[i],m_rect.width(),layout[i-1]-layout[i]); | ||
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r1555 | } | ||
| lineItem = static_cast<QGraphicsLineItem*>(axis.at(i+1)); | ||||
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r1561 | lineItem->setLine(m_rect.left()-5,layout[i],m_rect.left(),layout[i]); | ||
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r1555 | } | ||
| } | ||||
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r1805 | void ChartValueAxisY::handleAxisUpdated() | ||
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r1698 | { | ||
| //TODO:: fix this | ||||
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r1804 | QValueAxis* axis = qobject_cast<QValueAxis*>(m_chartAxis); | ||
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r1807 | m_tickCount = axis->tickCount(); | ||
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r1698 | ChartAxis::handleAxisUpdated(); | ||
| } | ||||
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r1555 | QTCOMMERCIALCHART_END_NAMESPACE | ||