chartlayout.cpp
331 lines
| 11.0 KiB
| text/x-c
|
CppLexer
/ src / chartlayout.cpp
Michal Klocek
|
r1535 | /**************************************************************************** | ||
| ** | ||||
| ** 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 | ||||
| ** $QT_END_LICENSE$ | ||||
| ** | ||||
| ****************************************************************************/ | ||||
|
Michal Klocek
|
r1534 | #include "chartlayout_p.h" | ||
| #include "chartpresenter_p.h" | ||||
|
Michal Klocek
|
r1837 | #include "qlegend_p.h" | ||
|
Michal Klocek
|
r1534 | #include "chartaxis_p.h" | ||
|
Michal Klocek
|
r1965 | #include "charttitle_p.h" | ||
| #include "chartbackground_p.h" | ||||
| #include "legendmarker_p.h" | ||||
|
Michal Klocek
|
r2105 | #include <QDebug> | ||
|
Michal Klocek
|
r1535 | |||
|
Michal Klocek
|
r1534 | QTCOMMERCIALCHART_BEGIN_NAMESPACE | ||
|
Michal Klocek
|
r1965 | static const qreal golden_ratio = 0.25; | ||
Jani Honkonen
|
r2131 | ChartLayout::ChartLayout(ChartPresenter *presenter) | ||
| : m_presenter(presenter), | ||||
| m_margins(20, 20, 20, 20), | ||||
| m_minChartRect(0, 0, 200, 200) | ||||
|
Michal Klocek
|
r1534 | { | ||
| } | ||||
| ChartLayout::~ChartLayout() | ||||
| { | ||||
| } | ||||
|
Jani Honkonen
|
r2131 | void ChartLayout::setGeometry(const QRectF &rect) | ||
|
Michal Klocek
|
r1534 | { | ||
|
Jani Honkonen
|
r2056 | if (!rect.isValid()) | ||
| return; | ||||
|
Michal Klocek
|
r1538 | |||
|
Jani Honkonen
|
r2131 | QList<ChartAxis *> axes = m_presenter->axisItems(); | ||
| QList<ChartElement *> charts = m_presenter->chartItems(); | ||||
| ChartTitle *title = m_presenter->titleElement(); | ||||
| QLegend *legend = m_presenter->legend(); | ||||
| ChartBackground *background = m_presenter->backgroundElement(); | ||||
|
Michal Klocek
|
r1534 | |||
|
Jani Honkonen
|
r2131 | QRectF contentGeometry = calculateBackgroundGeometry(rect, background); | ||
|
Michal Klocek
|
r1534 | |||
|
Michal Klocek
|
r1965 | contentGeometry = calculateContentGeometry(contentGeometry); | ||
|
Michal Klocek
|
r1837 | |||
|
Jani Honkonen
|
r2131 | if (title && title->isVisible()) | ||
| contentGeometry = calculateTitleGeometry(contentGeometry, title); | ||||
|
Michal Klocek
|
r1534 | |||
|
Jani Honkonen
|
r2131 | if (legend->isAttachedToChart() && legend->isVisible()) | ||
| contentGeometry = calculateLegendGeometry(contentGeometry, legend); | ||||
|
Michal Klocek
|
r1534 | |||
|
Jani Honkonen
|
r2131 | contentGeometry = calculateAxisGeometry(contentGeometry, axes); | ||
|
Michal Klocek
|
r1965 | |||
|
Jani Honkonen
|
r2131 | m_chartsRect = calculateChartsGeometry(contentGeometry, charts); | ||
|
Michal Klocek
|
r1965 | |||
| QGraphicsLayout::setGeometry(rect); | ||||
| } | ||||
|
Jani Honkonen
|
r2131 | QRectF ChartLayout::calculateContentGeometry(const QRectF &geometry) const | ||
|
Michal Klocek
|
r1965 | { | ||
|
Jani Honkonen
|
r2131 | return geometry.adjusted(m_margins.left(), m_margins.top(), -m_margins.right(), -m_margins.bottom()); | ||
|
Michal Klocek
|
r1965 | } | ||
|
Jani Honkonen
|
r2131 | QRectF ChartLayout::calculateContentMinimum(const QRectF &minimum) const | ||
|
Michal Klocek
|
r1965 | { | ||
|
Jani Honkonen
|
r2131 | return minimum.adjusted(0, 0, m_margins.left() + m_margins.right(), m_margins.top() + m_margins.bottom()); | ||
|
Michal Klocek
|
r1965 | } | ||
|
Michal Klocek
|
r1534 | |||
|
Michal Klocek
|
r1965 | |||
|
Jani Honkonen
|
r2131 | QRectF ChartLayout::calculateBackgroundGeometry(const QRectF &geometry, ChartBackground *background) const | ||
|
Michal Klocek
|
r1965 | { | ||
| qreal left, top, right, bottom; | ||||
| getContentsMargins(&left, &top, &right, &bottom); | ||||
|
Jani Honkonen
|
r2131 | QRectF backgroundGeometry = geometry.adjusted(left, top, -right, -bottom); | ||
| if (background) | ||||
| background->setRect(backgroundGeometry); | ||||
|
Michal Klocek
|
r1965 | return backgroundGeometry; | ||
| } | ||||
|
Jani Honkonen
|
r2131 | QRectF ChartLayout::calculateBackgroundMinimum(const QRectF &minimum) const | ||
|
Michal Klocek
|
r1965 | { | ||
| qreal left, top, right, bottom; | ||||
| getContentsMargins(&left, &top, &right, &bottom); | ||||
|
Jani Honkonen
|
r2131 | return minimum.adjusted(0, 0, left + right, top + bottom); | ||
|
Michal Klocek
|
r1965 | } | ||
|
Michal Klocek
|
r2105 | |||
|
Jani Honkonen
|
r2131 | QRectF ChartLayout::calculateAxisGeometry(const QRectF &geometry, const QList<ChartAxis *>& axes) const | ||
|
Michal Klocek
|
r1965 | { | ||
|
Michal Klocek
|
r2105 | QSizeF left; | ||
| QSizeF right; | ||||
| QSizeF bottom; | ||||
| QSizeF top; | ||||
| int leftCount = 0; | ||||
| int rightCount = 0; | ||||
| int topCount = 0; | ||||
| int bottomCount = 0; | ||||
|
Jani Honkonen
|
r2131 | foreach (ChartAxis *axis , axes) { | ||
|
Michal Klocek
|
r2105 | |||
|
Jani Honkonen
|
r2131 | if (!axis->isVisible()) | ||
| continue; | ||||
|
Michal Klocek
|
r2105 | |||
| QSizeF size = axis->effectiveSizeHint(Qt::MinimumSize); | ||||
|
Jani Honkonen
|
r2131 | switch (axis->alignment()) { | ||
|
Michal Klocek
|
r2105 | case Qt::AlignLeft: | ||
|
Jani Honkonen
|
r2131 | left.setWidth(left.width() + size.width()); | ||
| left.setHeight(qMax(left.height(), size.height())); | ||||
| leftCount++; | ||||
| break; | ||||
|
Michal Klocek
|
r2105 | case Qt::AlignRight: | ||
|
Jani Honkonen
|
r2131 | right.setWidth(right.width() + size.width()); | ||
| right.setHeight(qMax(right.height(), size.height())); | ||||
|
Michal Klocek
|
r2105 | rightCount++; | ||
| break; | ||||
| case Qt::AlignTop: | ||||
|
Jani Honkonen
|
r2131 | top.setWidth(qMax(top.width(), size.width())); | ||
| top.setHeight(top.height() + size.height()); | ||||
|
Michal Klocek
|
r2105 | topCount++; | ||
| break; | ||||
| case Qt::AlignBottom: | ||||
|
Jani Honkonen
|
r2131 | bottom.setWidth(qMax(bottom.width(), size.width())); | ||
|
Michal Klocek
|
r2105 | bottom.setHeight(bottom.height() + size.height()); | ||
| bottomCount++; | ||||
| break; | ||||
|
Michal Klocek
|
r1965 | } | ||
|
Michal Klocek
|
r1534 | } | ||
|
Jani Honkonen
|
r2131 | left.setWidth(qMax(qMax(top.width() / 2, bottom.width() / 2), left.width())); | ||
| left.setWidth(qMin(left.width(), golden_ratio * geometry.width())); | ||||
| right.setWidth(qMax(qMax(top.width() / 2, bottom.width() / 2), right.width())); | ||||
| right.setWidth(qMin(right.width(), golden_ratio * geometry.width())); | ||||
| top.setHeight(qMax(qMax(left.height() / 2, right.height() / 2), top.height())); | ||||
| bottom.setHeight(qMax(qMax(left.height() / 2, right.height() / 2), bottom.height())); | ||||
|
Michal Klocek
|
r2105 | |||
|
Jani Honkonen
|
r2131 | QRectF chartRect = geometry.adjusted(left.width(), top.height(), -right.width(), -bottom.height()); | ||
|
Michal Klocek
|
r2105 | |||
|
Jani Honkonen
|
r2131 | qreal leftOffset = 0; | ||
| qreal rightOffset = 0; | ||||
| qreal topOffset = 0; | ||||
| qreal bottomOffset = 0; | ||||
|
Michal Klocek
|
r2105 | |||
|
Jani Honkonen
|
r2131 | foreach(ChartAxis * axis , axes) { | ||
|
Michal Klocek
|
r2105 | |||
|
Jani Honkonen
|
r2131 | if (!axis->isVisible()) | ||
| continue; | ||||
|
Michal Klocek
|
r2105 | |||
| QSizeF size = axis->effectiveSizeHint(Qt::MinimumSize); | ||||
|
Jani Honkonen
|
r2131 | switch (axis->alignment()) { | ||
| case Qt::AlignLeft: { | ||||
| qreal width = qMin(size.width(), left.width() / leftCount); | ||||
| leftOffset += width; | ||||
| axis->setGeometry(QRect(chartRect.left() - leftOffset, chartRect.top() - (size.height() + 1) / 2, width, chartRect.height() + size.height() + 2), chartRect); | ||||
|
Michal Klocek
|
r2105 | break; | ||
| } | ||||
|
Jani Honkonen
|
r2131 | case Qt::AlignRight: { | ||
| qreal width = qMin(size.width(), right.width() / rightCount); | ||||
| axis->setGeometry(QRect(chartRect.right() + rightOffset, chartRect.top() - (size.height() + 1) / 2, width, chartRect.height() + size.height() + 2), chartRect); | ||||
| rightOffset += width; | ||||
|
Michal Klocek
|
r2105 | break; | ||
| } | ||||
| case Qt::AlignTop: | ||||
|
Jani Honkonen
|
r2131 | axis->setGeometry(QRect(geometry.left(), chartRect.top() - topOffset - size.height(), geometry.width(), size.height()), chartRect); | ||
| topOffset += size.height(); | ||||
|
Michal Klocek
|
r2105 | break; | ||
| case Qt::AlignBottom: | ||||
|
Jani Honkonen
|
r2131 | axis->setGeometry(QRect(geometry.left(), chartRect.bottom() + bottomOffset, geometry.width(), size.height()), chartRect); | ||
| bottomOffset += size.height(); | ||||
|
Michal Klocek
|
r2105 | break; | ||
Marek Rosa
|
r2093 | } | ||
|
Michal Klocek
|
r1965 | } | ||
|
Michal Klocek
|
r1883 | |||
|
Michal Klocek
|
r2105 | return chartRect; | ||
|
Michal Klocek
|
r1965 | } | ||
|
Michal Klocek
|
r1534 | |||
|
Jani Honkonen
|
r2131 | QRectF ChartLayout::calculateAxisMinimum(const QRectF &minimum, const QList<ChartAxis *>& axes) const | ||
|
Michal Klocek
|
r1965 | { | ||
|
Michal Klocek
|
r2105 | QSizeF left; | ||
| QSizeF right; | ||||
| QSizeF bottom; | ||||
| QSizeF top; | ||||
|
Jani Honkonen
|
r2131 | foreach (ChartAxis *axis , axes) { | ||
|
Michal Klocek
|
r2105 | |||
| QSizeF size = axis->effectiveSizeHint(Qt::MinimumSize); | ||||
|
Jani Honkonen
|
r2131 | if (!axis->isVisible()) | ||
| continue; | ||||
|
Michal Klocek
|
r2105 | |||
|
Jani Honkonen
|
r2131 | switch (axis->alignment()) { | ||
| case Qt::AlignLeft: | ||||
| left.setWidth(left.width() + size.width()); | ||||
| left.setHeight(qMax(left.height() * 2, size.height())); | ||||
|
Michal Klocek
|
r2105 | break; | ||
|
Jani Honkonen
|
r2131 | case Qt::AlignRight: | ||
| right.setWidth(right.width() + size.width()); | ||||
| right.setHeight(qMax(right.height() * 2, size.height())); | ||||
|
Michal Klocek
|
r2105 | break; | ||
|
Jani Honkonen
|
r2131 | case Qt::AlignTop: | ||
| top.setWidth(qMax(top.width(), size.width())); | ||||
| top.setHeight(top.height() + size.height()); | ||||
|
Michal Klocek
|
r2105 | break; | ||
|
Jani Honkonen
|
r2131 | case Qt::AlignBottom: | ||
| bottom.setWidth(qMax(bottom.width(), size.width())); | ||||
|
Michal Klocek
|
r2105 | bottom.setHeight(bottom.height() + size.height()); | ||
| break; | ||||
| } | ||||
|
Michal Klocek
|
r1965 | } | ||
|
Jani Honkonen
|
r2131 | return minimum.adjusted(0, 0, left.width() + right.width() + qMax(top.width(), bottom.width()), top.height() + bottom.height() + qMax(left.height(), right.height())); | ||
|
Michal Klocek
|
r1965 | } | ||
|
Michal Klocek
|
r1534 | |||
|
Jani Honkonen
|
r2131 | QRectF ChartLayout::calculateLegendGeometry(const QRectF &geometry, QLegend *legend) const | ||
|
Michal Klocek
|
r1965 | { | ||
|
Jani Honkonen
|
r2131 | QSizeF size = legend->effectiveSizeHint(Qt::PreferredSize, QSizeF(-1, -1)); | ||
|
Michal Klocek
|
r1965 | QRectF legendRect; | ||
| QRectF result; | ||||
|
Michal Klocek
|
r1883 | |||
|
Michal Klocek
|
r1965 | switch (legend->alignment()) { | ||
|
Michal Klocek
|
r2105 | case Qt::AlignTop: { | ||
|
Jani Honkonen
|
r2131 | legendRect = QRectF(geometry.topLeft(), QSizeF(geometry.width(), size.height())); | ||
| result = geometry.adjusted(0, legendRect.height(), 0, 0); | ||||
|
Marek Rosa
|
r2093 | break; | ||
|
Michal Klocek
|
r2105 | } | ||
| case Qt::AlignBottom: { | ||||
|
Jani Honkonen
|
r2131 | legendRect = QRectF(QPointF(geometry.left(), geometry.bottom() - size.height()), QSizeF(geometry.width(), size.height())); | ||
| result = geometry.adjusted(0, 0, 0, -legendRect.height()); | ||||
|
Marek Rosa
|
r2093 | break; | ||
|
Michal Klocek
|
r2105 | } | ||
|
Marek Rosa
|
r2093 | case Qt::AlignLeft: { | ||
|
Jani Honkonen
|
r2131 | qreal width = qMin(size.width(), geometry.width() * golden_ratio); | ||
| legendRect = QRectF(geometry.topLeft(), QSizeF(width, geometry.height())); | ||||
| result = geometry.adjusted(width, 0, 0, 0); | ||||
|
Marek Rosa
|
r2093 | break; | ||
| } | ||||
| case Qt::AlignRight: { | ||||
|
Jani Honkonen
|
r2131 | qreal width = qMin(size.width(), geometry.width() * golden_ratio); | ||
| legendRect = QRectF(QPointF(geometry.right() - width, geometry.top()), QSizeF(width, geometry.height())); | ||||
| result = geometry.adjusted(0, 0, -width, 0); | ||||
|
Marek Rosa
|
r2093 | break; | ||
| } | ||||
|
Michal Klocek
|
r2105 | default: { | ||
|
Jani Honkonen
|
r2131 | legendRect = QRectF(0, 0, 0, 0); | ||
|
Marek Rosa
|
r2093 | result = geometry; | ||
| break; | ||||
| } | ||||
|
Michal Klocek
|
r2105 | } | ||
|
Michal Klocek
|
r1534 | |||
|
Michal Klocek
|
r1965 | legend->setGeometry(legendRect); | ||
|
Michal Klocek
|
r1534 | |||
|
Michal Klocek
|
r1965 | return result; | ||
| } | ||||
|
Michal Klocek
|
r1534 | |||
|
Michal Klocek
|
r2105 | |||
|
Jani Honkonen
|
r2131 | QRectF ChartLayout::calculateChartsGeometry(const QRectF &geometry, const QList<ChartElement *>& charts) const | ||
|
Michal Klocek
|
r1965 | { | ||
|
Michal Klocek
|
r2105 | Q_ASSERT(geometry.isValid()); | ||
|
Jani Honkonen
|
r2131 | foreach (ChartElement *chart, charts) | ||
|
Michal Klocek
|
r2105 | chart->handleGeometryChanged(geometry); | ||
| return geometry; | ||||
|
Michal Klocek
|
r1965 | } | ||
|
Michal Klocek
|
r1534 | |||
|
Jani Honkonen
|
r2131 | QRectF ChartLayout::calculateLegendMinimum(const QRectF &geometry, QLegend *legend) const | ||
|
Michal Klocek
|
r2105 | { | ||
|
Jani Honkonen
|
r2131 | QSizeF minSize = legend->effectiveSizeHint(Qt::MinimumSize, QSizeF(-1, -1)); | ||
| return geometry.adjusted(0, 0, minSize.width(), minSize.height()); | ||||
|
Michal Klocek
|
r2105 | } | ||
|
Jani Honkonen
|
r2131 | QRectF ChartLayout::calculateTitleGeometry(const QRectF &geometry, ChartTitle *title) const | ||
|
Michal Klocek
|
r1965 | { | ||
|
Marek Rosa
|
r2093 | title->setGeometry(geometry); | ||
| QPointF center = geometry.center() - title->boundingRect().center(); | ||||
|
Jani Honkonen
|
r2131 | title->setPos(center.x(), title->pos().y()); | ||
| return geometry.adjusted(0, title->boundingRect().height(), 0, 0); | ||||
|
Michal Klocek
|
r1534 | } | ||
|
Jani Honkonen
|
r2131 | QRectF ChartLayout::calculateTitleMinimum(const QRectF &minimum, ChartTitle *title) const | ||
|
Michal Klocek
|
r1965 | { | ||
|
Marek Rosa
|
r2093 | QSizeF min = title->sizeHint(Qt::MinimumSize); | ||
|
Jani Honkonen
|
r2131 | return minimum.adjusted(0, 0, min.width(), min.height()); | ||
|
Michal Klocek
|
r1965 | } | ||
|
Michal Klocek
|
r1534 | |||
|
Jani Honkonen
|
r2131 | QSizeF ChartLayout::sizeHint(Qt::SizeHint which, const QSizeF &constraint) const | ||
|
Michal Klocek
|
r1534 | { | ||
| Q_UNUSED(constraint); | ||||
|
Jani Honkonen
|
r2131 | if (which == Qt::MinimumSize) { | ||
| QList<ChartAxis *> axes = m_presenter->axisItems(); | ||||
| ChartTitle *title = m_presenter->titleElement(); | ||||
| QLegend *legend = m_presenter->legend(); | ||||
| QRectF minimumRect(0, 0, 0, 0); | ||||
|
Michal Klocek
|
r1965 | minimumRect = calculateBackgroundMinimum(minimumRect); | ||
| minimumRect = calculateContentMinimum(minimumRect); | ||||
|
Jani Honkonen
|
r2131 | minimumRect = calculateTitleMinimum(minimumRect, title); | ||
| minimumRect = calculateLegendMinimum(minimumRect, legend); | ||||
| minimumRect = calculateAxisMinimum(minimumRect, axes); | ||||
|
Michal Klocek
|
r2105 | return minimumRect.united(m_minChartRect).size().toSize(); | ||
|
Jani Honkonen
|
r2131 | } | ||
| return QSize(-1, -1); | ||||
|
Michal Klocek
|
r1534 | } | ||
|
Jani Honkonen
|
r2131 | void ChartLayout::setMargins(const QMargins &margins) | ||
|
Michal Klocek
|
r1534 | { | ||
|
Jani Honkonen
|
r2131 | if (m_margins != margins) { | ||
|
Michal Klocek
|
r1965 | m_margins = margins; | ||
|
Michal Klocek
|
r1534 | updateGeometry(); | ||
| } | ||||
| } | ||||
|
Michal Klocek
|
r1965 | QMargins ChartLayout::margins() const | ||
| { | ||||
| return m_margins; | ||||
| } | ||||
|
Michal Klocek
|
r1534 | QTCOMMERCIALCHART_END_NAMESPACE | ||