verticalaxis.cpp
144 lines
| 5.5 KiB
| text/x-c
|
CppLexer
Michal Klocek
|
r2111 | /**************************************************************************** | ||
| ** | ||||
| ** 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 "verticalaxis_p.h" | ||||
| #include "qabstractaxis.h" | ||||
| #include <QFontMetrics> | ||||
| QTCOMMERCIALCHART_BEGIN_NAMESPACE | ||||
Jani Honkonen
|
r2131 | VerticalAxis::VerticalAxis(QAbstractAxis *axis, ChartPresenter *presenter, bool intervalAxis) | ||
| : ChartAxis(axis, presenter, intervalAxis) | ||||
|
Michal Klocek
|
r2111 | { | ||
| } | ||||
| VerticalAxis::~VerticalAxis() | ||||
| { | ||||
| } | ||||
| void VerticalAxis::updateGeometry() | ||||
| { | ||||
| const QVector<qreal> &layout = ChartAxis::layout(); | ||||
|
Jani Honkonen
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r2131 | if (layout.isEmpty()) | ||
| return; | ||||
|
Michal Klocek
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r2111 | |||
| QStringList labelList = labels(); | ||||
| QList<QGraphicsItem *> lines = lineItems(); | ||||
| QList<QGraphicsItem *> labels = labelItems(); | ||||
| QList<QGraphicsItem *> shades = shadeItems(); | ||||
| QList<QGraphicsItem *> axis = arrowItems(); | ||||
| Q_ASSERT(labels.size() == labelList.size()); | ||||
| Q_ASSERT(layout.size() == labelList.size()); | ||||
|
Jani Honkonen
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r2131 | const QRectF &axisRect = axisGeometry(); | ||
| const QRectF &gridRect = gridGeometry(); | ||||
|
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r2111 | |||
| qreal height = axisRect.bottom(); | ||||
|
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r2131 | QGraphicsLineItem *lineItem = static_cast<QGraphicsLineItem *>(axis.at(0)); | ||
|
Michal Klocek
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r2111 | |||
|
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r2131 | if (alignment() == Qt::AlignLeft) | ||
| lineItem->setLine(axisRect.right() , gridRect.top(), axisRect.right(), gridRect.bottom()); | ||||
| else if (alignment() == Qt::AlignRight) | ||||
| lineItem->setLine(axisRect.left() , gridRect.top(), axisRect.left(), gridRect.bottom()); | ||||
|
Michal Klocek
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r2111 | |||
| QFontMetrics fn(font()); | ||||
| for (int i = 0; i < layout.size(); ++i) { | ||||
|
Jani Honkonen
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r2131 | QGraphicsLineItem *gridItem = static_cast<QGraphicsLineItem *>(lines.at(i)); | ||
| QGraphicsLineItem *tickItem = static_cast<QGraphicsLineItem *>(axis.at(i + 1)); | ||||
| QGraphicsSimpleTextItem *labelItem = static_cast<QGraphicsSimpleTextItem *>(labels.at(i)); | ||||
|
Michal Klocek
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r2111 | |||
| //grid line | ||||
|
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r2131 | gridItem->setLine(gridRect.left() , layout[i], gridRect.right(), layout[i]); | ||
|
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r2111 | |||
| //label text | ||||
| QString text = labelList.at(i); | ||||
|
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r2131 | if (fn.boundingRect(text).width() > axisRect.right() - axisRect.left() - labelPadding()) { | ||
|
Michal Klocek
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r2111 | QString label = text + "..."; | ||
| while (fn.boundingRect(label).width() > axisRect.right() - axisRect.left() - labelPadding() && label.length() > 3) | ||||
|
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r2131 | label.remove(label.length() - 4, 1); | ||
|
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r2111 | labelItem->setText(label); | ||
|
Jani Honkonen
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r2131 | } else { | ||
|
Michal Klocek
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r2111 | labelItem->setText(text); | ||
| } | ||||
|
Jani Honkonen
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r2131 | const QRectF &rect = labelItem->boundingRect(); | ||
|
Michal Klocek
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r2111 | QPointF center = rect.center(); | ||
| labelItem->setTransformOriginPoint(center.x(), center.y()); | ||||
| //ticks and label position | ||||
|
Jani Honkonen
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r2131 | if (alignment() == Qt::AlignLeft) { | ||
| labelItem->setPos(axisRect.right() - rect.width() - labelPadding() , layout[i] - center.y()); | ||||
| tickItem->setLine(axisRect.right() - labelPadding(), layout[i], axisRect.right(), layout[i]); | ||||
| } else if (alignment() == Qt::AlignRight) { | ||||
| labelItem->setPos(axisRect.left() + labelPadding() , layout[i] - center.y()); | ||||
| tickItem->setLine(axisRect.left(), layout[i], axisRect.left() + labelPadding(), layout[i]); | ||||
|
Michal Klocek
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r2111 | } | ||
|
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r2131 | if (intervalAxis() && i + 1 != layout.size()) { | ||
| const qreal delta = (layout[i + 1] - layout[i]) / 2; | ||||
|
Michal Klocek
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r2111 | labelItem->setPos(labelItem->pos().x() , layout[i] + delta - center.y()); | ||
| } | ||||
| //overlap detection | ||||
|
Jani Honkonen
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r2131 | if (labelItem->pos().y() + rect.height() > height || | ||
|
Michal Klocek
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r2111 | labelItem->pos().y() + rect.height() > axisRect.bottom() || | ||
| labelItem->pos().y() < axisRect.top()) { | ||||
| labelItem->setVisible(false); | ||||
| gridItem->setVisible(false); | ||||
| tickItem->setVisible(false); | ||||
|
Jani Honkonen
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r2131 | } else { | ||
|
Michal Klocek
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r2111 | labelItem->setVisible(true); | ||
| gridItem->setVisible(true); | ||||
|
Jani Honkonen
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r2131 | height = labelItem->pos().y(); | ||
|
Michal Klocek
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r2111 | } | ||
| //shades | ||||
|
Jani Honkonen
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r2131 | if ((i + 1) % 2 && i > 1) { | ||
| QGraphicsRectItem *rectItem = static_cast<QGraphicsRectItem *>(shades.at(i / 2 - 1)); | ||||
| rectItem->setRect(gridRect.left(), layout[i], gridRect.width(), layout[i - 1] - layout[i]); | ||||
|
Michal Klocek
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r2111 | } | ||
| // check if the grid line and the axis tick should be shown | ||||
| qreal y = gridItem->line().p1().y(); | ||||
| if (y < gridRect.top() || y > gridRect.bottom()) { | ||||
| gridItem->setVisible(false); | ||||
| tickItem->setVisible(false); | ||||
|
Jani Honkonen
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r2131 | if (intervalAxis() && (labelItem->pos().y() < gridRect.top() || labelItem->pos().y() + rect.height() > gridRect.bottom())) | ||
| labelItem->setVisible(false); | ||||
|
Michal Klocek
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r2111 | } | ||
| } | ||||
| //begin/end grid line in case labels between | ||||
|
Jani Honkonen
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r2131 | if (intervalAxis()) { | ||
|
Michal Klocek
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r2111 | QGraphicsLineItem *gridLine; | ||
|
Jani Honkonen
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r2131 | gridLine = static_cast<QGraphicsLineItem *>(lines.at(layout.size())); | ||
|
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r2111 | gridLine->setLine(gridRect.left(), gridRect.top(), gridRect.right(), gridRect.top()); | ||
|
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r2131 | gridLine = static_cast<QGraphicsLineItem *>(lines.at(layout.size() + 1)); | ||
|
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r2111 | gridLine->setLine(gridRect.left(), gridRect.bottom(), gridRect.right(), gridRect.bottom()); | ||
| } | ||||
| } | ||||
| QTCOMMERCIALCHART_END_NAMESPACE | ||||