chartbarcategoryaxisy.cpp
146 lines
| 4.2 KiB
| text/x-c
|
CppLexer
Marek Rosa
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r1555 | /**************************************************************************** | ||
Michal Klocek
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r1716 | ** | ||
| ** 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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r1555 | |||
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r1810 | #include "chartbarcategoryaxisy_p.h" | ||
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r1555 | #include "chartpresenter_p.h" | ||
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r1810 | #include "qbarcategoryaxis_p.h" | ||
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r1720 | #include <qmath.h> | ||
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r1965 | #include <QFontMetrics> | ||
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r2133 | #include <QDebug> | ||
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r1555 | |||
| QTCOMMERCIALCHART_BEGIN_NAMESPACE | ||||
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r2131 | ChartBarCategoryAxisY::ChartBarCategoryAxisY(QBarCategoryAxis *axis, ChartPresenter *presenter) | ||
| : VerticalAxis(axis, presenter, true), | ||||
| m_categoriesAxis(axis) | ||||
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r1555 | { | ||
| } | ||||
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r1918 | ChartBarCategoryAxisY::~ChartBarCategoryAxisY() | ||
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r1555 | { | ||
| } | ||||
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r1918 | QVector<qreal> ChartBarCategoryAxisY::calculateLayout() const | ||
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r1555 | { | ||
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r1725 | int count = m_categoriesAxis->d_ptr->count(); | ||
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r2131 | Q_ASSERT(count >= 1); | ||
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r1555 | |||
| QVector<qreal> points; | ||||
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r2131 | points.resize(count + 2); | ||
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r1555 | |||
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r2131 | const QRectF &gridRect = gridGeometry(); | ||
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r2111 | |||
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r2131 | const qreal delta = gridRect.height() / (count); | ||
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r2111 | qreal offset = - min() - 0.5; | ||
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r1716 | |||
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r2131 | if (delta < 1) | ||
| return points; | ||||
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r1837 | |||
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r2131 | if (offset < 0) | ||
| offset = int(offset * gridRect.height() / (max() - min())) % int(delta) + delta; | ||||
| else | ||||
| offset = int(offset * gridRect.height() / (max() - min())) % int(delta); | ||||
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r1716 | |||
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r2131 | for (int i = -1; i < count + 1; ++i) { | ||
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r2111 | int y = gridRect.bottom() - i * delta - offset; | ||
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r2131 | points[i + 1] = y; | ||
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r1555 | } | ||
| return points; | ||||
| } | ||||
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r1918 | QStringList ChartBarCategoryAxisY::createCategoryLabels(const QVector<qreal>& layout) const | ||
|
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r1720 | { | ||
| QStringList result; | ||||
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r2131 | const QRectF &gridRect = gridGeometry(); | ||
| qreal d = (max() - min()) / gridRect.height(); | ||||
| for (int i = 0; i < layout.count() - 1; ++i) { | ||||
| qreal x = qFloor(((gridRect.height() - (layout[i + 1] + layout[i]) / 2 + gridRect.top()) * d + min() + 0.5)); | ||||
|
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r2105 | if ((x < m_categoriesAxis->categories().count()) && (x >= 0)) { | ||
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r1720 | result << m_categoriesAxis->categories().at(x); | ||
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r2131 | } else { | ||
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r2105 | // No label for x coordinate | ||
| result << ""; | ||||
| } | ||||
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r1720 | } | ||
| result << ""; | ||||
| return result; | ||||
| } | ||||
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r1918 | void ChartBarCategoryAxisY::updateGeometry() | ||
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r1555 | { | ||
| const QVector<qreal>& layout = ChartAxis::layout(); | ||||
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r2131 | if (layout.isEmpty()) | ||
| return; | ||||
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r2111 | setLabels(createCategoryLabels(layout)); | ||
| VerticalAxis::updateGeometry(); | ||||
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r1555 | } | ||
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r1918 | void ChartBarCategoryAxisY::handleAxisUpdated() | ||
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r1643 | { | ||
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Jani Honkonen
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r2131 | if (m_categoriesAxis->categories() != m_categories) { | ||
| m_categories = m_categoriesAxis->categories(); | ||||
| if (ChartAxis::layout().count() == m_categoriesAxis->d_ptr->count() + 2) | ||||
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r1720 | updateGeometry(); | ||
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r1643 | } | ||
| ChartAxis::handleAxisUpdated(); | ||||
| } | ||||
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r2131 | QSizeF ChartBarCategoryAxisY::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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r2138 | QSizeF base = VerticalAxis::sizeHint(which, constraint); | ||
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r1965 | QStringList ticksList = createCategoryLabels(ChartAxis::layout()); | ||
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r2133 | qreal width=0; | ||
| qreal height=0; | ||||
| switch (which) { | ||||
| case Qt::MinimumSize: | ||||
| width = fn.boundingRect("...").width() + labelPadding(); | ||||
| height = fn.height(); | ||||
| width+=base.width(); | ||||
| height=qMax(height,base.height()); | ||||
| sh = QSizeF(width,height); | ||||
| break; | ||||
| case Qt::PreferredSize:{ | ||||
| for (int i = 0; i < ticksList.size(); ++i) | ||||
| { | ||||
| QRectF rect = fn.boundingRect(ticksList.at(i)); | ||||
| height+=rect.height(); | ||||
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r2136 | width=qMax(rect.width()+labelPadding() + 1 ,width); //one pixel torelance | ||
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r2133 | } | ||
| height=qMax(height,base.height()); | ||||
| width+=base.width(); | ||||
| sh = QSizeF(width,height); | ||||
| break; | ||||
| } | ||||
| default: | ||||
| break; | ||||
| } | ||||
| return sh; | ||||
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Michal Klocek
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r1965 | } | ||
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Marek Rosa
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r1555 | QTCOMMERCIALCHART_END_NAMESPACE | ||