chartvalueaxisy.cpp
141 lines
| 4.5 KiB
| text/x-c
|
CppLexer
Titta Heikkala
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r2845 | /****************************************************************************** | ||
Marek Rosa
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r1555 | ** | ||
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Titta Heikkala
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r2845 | ** Copyright (C) 2015 The Qt Company Ltd. | ||
| ** Contact: http://www.qt.io/licensing/ | ||||
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Marek Rosa
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r1555 | ** | ||
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Titta Heikkala
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r2740 | ** This file is part of the Qt Charts module. | ||
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Marek Rosa
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r1555 | ** | ||
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Titta Heikkala
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r2845 | ** $QT_BEGIN_LICENSE:COMM$ | ||
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Marek Rosa
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r1555 | ** | ||
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Titta Heikkala
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r2845 | ** Commercial License Usage | ||
| ** Licensees holding valid commercial Qt licenses may use this file in | ||||
| ** accordance with the commercial license agreement provided with the | ||||
| ** Software or, alternatively, in accordance with the terms contained in | ||||
| ** a written agreement between you and The Qt Company. For licensing terms | ||||
| ** and conditions see http://www.qt.io/terms-conditions. For further | ||||
| ** information use the contact form at http://www.qt.io/contact-us. | ||||
|
Marek Rosa
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r1555 | ** | ||
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Titta Heikkala
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r2845 | ** $QT_END_LICENSE$ | ||
| ** | ||||
| ******************************************************************************/ | ||||
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Marek Rosa
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r1555 | |||
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Titta Heikkala
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r2714 | #include <private/chartvalueaxisy_p.h> | ||
| #include <QtCharts/QAbstractAxis> | ||||
| #include <private/chartpresenter_p.h> | ||||
| #include <QtCharts/QValueAxis> | ||||
| #include <private/abstractchartlayout_p.h> | ||||
| #include <QtWidgets/QGraphicsLayout> | ||||
| #include <QtCore/QtMath> | ||||
| #include <QtCore/QDebug> | ||||
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Marek Rosa
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r1555 | |||
Titta Heikkala
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r2712 | QT_CHARTS_BEGIN_NAMESPACE | ||
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Marek Rosa
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r1555 | |||
Miikka Heikkinen
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r2483 | ChartValueAxisY::ChartValueAxisY(QValueAxis *axis, QGraphicsItem *item) | ||
Michal Klocek
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r2273 | : VerticalAxis(axis, item), | ||
Jani Honkonen
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r2131 | m_axis(axis) | ||
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Marek Rosa
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r1555 | { | ||
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Miikka Heikkinen
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r2483 | QObject::connect(m_axis, SIGNAL(tickCountChanged(int)), this, SLOT(handleTickCountChanged(int))); | ||
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Titta Heikkala
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r2795 | QObject::connect(m_axis, SIGNAL(minorTickCountChanged(int)), | ||
| this, SLOT(handleMinorTickCountChanged(int))); | ||||
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Miikka Heikkinen
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r2483 | QObject::connect(m_axis, SIGNAL(labelFormatChanged(QString)), this, SLOT(handleLabelFormatChanged(QString))); | ||
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Marek Rosa
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r1555 | } | ||
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Marek Rosa
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r1805 | ChartValueAxisY::~ChartValueAxisY() | ||
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Marek Rosa
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r1555 | { | ||
| } | ||||
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Marek Rosa
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r1805 | QVector<qreal> ChartValueAxisY::calculateLayout() const | ||
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Marek Rosa
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r1555 | { | ||
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Titta Heikkala
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r2712 | int tickCount = m_axis->tickCount(); | ||
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Michal Klocek
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r2273 | |||
| Q_ASSERT(tickCount >= 2); | ||||
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Marek Rosa
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r1555 | |||
| QVector<qreal> points; | ||||
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Michal Klocek
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r2273 | points.resize(tickCount); | ||
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Marek Rosa
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r1555 | |||
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Jani Honkonen
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r2131 | const QRectF &gridRect = gridGeometry(); | ||
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Michal Klocek
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r2111 | |||
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Miikka Heikkinen
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r2447 | const qreal deltaY = gridRect.height() / (qreal(tickCount) - 1.0); | ||
| for (int i = 0; i < tickCount; ++i) | ||||
| points[i] = qreal(i) * -deltaY + gridRect.bottom(); | ||||
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Marek Rosa
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r1561 | |||
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Marek Rosa
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r1555 | return points; | ||
| } | ||||
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Marek Rosa
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r1805 | void ChartValueAxisY::updateGeometry() | ||
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Marek Rosa
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r1555 | { | ||
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Miikka Heikkinen
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r2483 | const QVector<qreal> &layout = ChartAxisElement::layout(); | ||
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Jani Honkonen
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r2131 | if (layout.isEmpty()) | ||
| return; | ||||
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Michal Klocek
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r2273 | setLabels(createValueLabels(min(),max(),layout.size(),m_axis->labelFormat())); | ||
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Michal Klocek
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r2111 | VerticalAxis::updateGeometry(); | ||
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Marek Rosa
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r1555 | } | ||
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Michal Klocek
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r2273 | void ChartValueAxisY::handleTickCountChanged(int tick) | ||
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Michal Klocek
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r1698 | { | ||
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Titta Heikkala
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r2712 | Q_UNUSED(tick); | ||
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Michal Klocek
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r2333 | QGraphicsLayoutItem::updateGeometry(); | ||
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Titta Heikkala
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r2712 | if (presenter()) presenter()->layout()->invalidate(); | ||
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Michal Klocek
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r1698 | } | ||
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Titta Heikkala
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r2795 | void ChartValueAxisY::handleMinorTickCountChanged(int tick) | ||
| { | ||||
| Q_UNUSED(tick); | ||||
| QGraphicsLayoutItem::updateGeometry(); | ||||
| if (presenter()) | ||||
| presenter()->layout()->invalidate(); | ||||
| } | ||||
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Marek Rosa
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r2323 | void ChartValueAxisY::handleLabelFormatChanged(const QString &format) | ||
| { | ||||
| Q_UNUSED(format); | ||||
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Michal Klocek
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r2333 | QGraphicsLayoutItem::updateGeometry(); | ||
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Marek Rosa
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r2323 | if(presenter()) presenter()->layout()->invalidate(); | ||
| } | ||||
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Jani Honkonen
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r2131 | QSizeF ChartValueAxisY::sizeHint(Qt::SizeHint which, const QSizeF &constraint) const | ||
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Michal Klocek
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r1965 | { | ||
| Q_UNUSED(constraint) | ||||
| QSizeF sh; | ||||
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Michal Klocek
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r2138 | QSizeF base = VerticalAxis::sizeHint(which, constraint); | ||
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Michal Klocek
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r2273 | QStringList ticksList = createValueLabels(min(),max(),m_axis->tickCount(),m_axis->labelFormat()); | ||
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Jani Honkonen
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r2131 | qreal width = 0; | ||
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Miikka Heikkinen
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r2443 | // Height of vertical axis sizeHint indicates the maximum distance labels can extend past | ||
| // first and last ticks. Base height is irrelevant. | ||||
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Jani Honkonen
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r2131 | qreal height = 0; | ||
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Michal Klocek
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r1965 | |||
| switch (which) { | ||||
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Marek Rosa
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r2093 | case Qt::MinimumSize: { | ||
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Titta Heikkala
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r2712 | QRectF boundingRect = ChartPresenter::textBoundingRect(axis()->labelsFont(), | ||
| QStringLiteral("..."), | ||||
| axis()->labelsAngle()); | ||||
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Miikka Heikkinen
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r2534 | width = boundingRect.width() + labelPadding() + base.width() + 1.0; | ||
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Miikka Heikkinen
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r2443 | height = boundingRect.height() / 2.0; | ||
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Miikka Heikkinen
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r2412 | sh = QSizeF(width, height); | ||
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Marek Rosa
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r2093 | break; | ||
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Michal Klocek
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r2105 | } | ||
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Miikka Heikkinen
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r2412 | case Qt::PreferredSize: { | ||
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Miikka Heikkinen
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r2534 | qreal labelWidth = 0.0; | ||
| qreal firstHeight = -1.0; | ||||
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Miikka Heikkinen
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r2412 | foreach (const QString& s, ticksList) { | ||
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Miikka Heikkinen
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r2539 | QRectF rect = ChartPresenter::textBoundingRect(axis()->labelsFont(), s, axis()->labelsAngle()); | ||
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Miikka Heikkinen
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r2412 | labelWidth = qMax(rect.width(), labelWidth); | ||
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Miikka Heikkinen
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r2443 | height = rect.height(); | ||
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Miikka Heikkinen
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r2534 | if (firstHeight < 0.0) | ||
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Miikka Heikkinen
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r2443 | firstHeight = height; | ||
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Miikka Heikkinen
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r2412 | } | ||
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Miikka Heikkinen
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r2534 | width = labelWidth + labelPadding() + base.width() + 2.0; //two pixels of tolerance | ||
| height = qMax(height, firstHeight) / 2.0; | ||||
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Miikka Heikkinen
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r2412 | sh = QSizeF(width, height); | ||
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Marek Rosa
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r2093 | break; | ||
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Michal Klocek
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r2105 | } | ||
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Marek Rosa
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r2093 | default: | ||
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Michal Klocek
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r1965 | break; | ||
| } | ||||
| return sh; | ||||
| } | ||||
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Michal Klocek
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r1698 | |||
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Michal Klocek
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r2273 | #include "moc_chartvalueaxisy_p.cpp" | ||
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Titta Heikkala
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r2712 | QT_CHARTS_END_NAMESPACE | ||