chartthememanager.cpp
247 lines
| 7.2 KiB
| text/x-c
|
CppLexer
Michal Klocek
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r2273 | /**************************************************************************** | ||
| ** | ||||
Titta Heikkala
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r2688 | ** Copyright (C) 2014 Digia Plc | ||
|
Michal Klocek
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r2273 | ** All rights reserved. | ||
Titta Heikkala
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r2740 | ** For any questions to Digia, please use contact form at http://qt.io | ||
|
Michal Klocek
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r2273 | ** | ||
|
Titta Heikkala
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r2740 | ** This file is part of the Qt Charts module. | ||
|
Michal Klocek
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r2273 | ** | ||
|
Titta Heikkala
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r2740 | ** Licensees holding valid commercial license for Qt may use this file in | ||
| ** accordance with the Qt License Agreement provided with the Software | ||||
| ** or, alternatively, in accordance with the terms contained in a written | ||||
| ** agreement between you and Digia. | ||||
|
Michal Klocek
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r2273 | ** | ||
| ** If you have questions regarding the use of this file, please use | ||||
|
Titta Heikkala
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r2740 | ** contact form at http://qt.io | ||
|
Michal Klocek
|
r2273 | ** | ||
| ****************************************************************************/ | ||||
|
Titta Heikkala
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r2714 | #include <private/qabstractseries_p.h> | ||
| #include <private/qabstractaxis_p.h> | ||||
| #include <QtCore/QTime> | ||||
|
Michal Klocek
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r2273 | //themes | ||
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r2714 | #include <private/chartthemesystem_p.h> | ||
| #include <private/chartthemelight_p.h> | ||||
| #include <private/chartthemebluecerulean_p.h> | ||||
| #include <private/chartthemedark_p.h> | ||||
| #include <private/chartthemebrownsand_p.h> | ||||
| #include <private/chartthemebluencs_p.h> | ||||
| #include <private/chartthemehighcontrast_p.h> | ||||
| #include <private/chartthemeblueicy_p.h> | ||||
| #include <private/chartthemeqt_p.h> | ||||
|
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r2273 | |||
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Titta Heikkala
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r2712 | QT_CHARTS_BEGIN_NAMESPACE | ||
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r2273 | |||
| ChartThemeManager::ChartThemeManager(QChart* chart) : | ||||
| m_chart(chart) | ||||
| { | ||||
| qsrand(QTime(0, 0, 0).secsTo(QTime::currentTime())); | ||||
| } | ||||
| void ChartThemeManager::setTheme(QChart::ChartTheme theme) | ||||
| { | ||||
Miikka Heikkinen
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r2516 | if (m_theme.isNull() || theme != m_theme->id()) { | ||
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Michal Klocek
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r2273 | switch (theme) { | ||
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Miikka Heikkinen
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r2516 | case QChart::ChartThemeLight: | ||
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r2273 | m_theme.reset(new ChartThemeLight()); | ||
| break; | ||||
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r2516 | case QChart::ChartThemeBlueCerulean: | ||
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r2273 | m_theme.reset(new ChartThemeBlueCerulean()); | ||
| break; | ||||
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r2516 | case QChart::ChartThemeDark: | ||
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r2273 | m_theme.reset(new ChartThemeDark()); | ||
| break; | ||||
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Miikka Heikkinen
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r2516 | case QChart::ChartThemeBrownSand: | ||
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r2273 | m_theme.reset(new ChartThemeBrownSand()); | ||
| break; | ||||
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r2516 | case QChart::ChartThemeBlueNcs: | ||
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r2273 | m_theme.reset(new ChartThemeBlueNcs()); | ||
| break; | ||||
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r2516 | case QChart::ChartThemeHighContrast: | ||
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r2273 | m_theme.reset(new ChartThemeHighContrast()); | ||
| break; | ||||
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Miikka Heikkinen
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r2516 | case QChart::ChartThemeBlueIcy: | ||
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Michal Klocek
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r2273 | m_theme.reset(new ChartThemeBlueIcy()); | ||
| break; | ||||
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Titta Heikkala
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r2625 | case QChart::ChartThemeQt: | ||
| m_theme.reset(new ChartThemeQt()); | ||||
| break; | ||||
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Miikka Heikkinen
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r2516 | default: | ||
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Michal Klocek
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r2273 | m_theme.reset(new ChartThemeSystem()); | ||
| break; | ||||
| } | ||||
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r2516 | if (!m_theme.isNull()) { | ||
| decorateChart(m_chart,m_theme.data()); | ||||
| decorateLegend(m_chart->legend(),m_theme.data()); | ||||
| foreach (QAbstractAxis* axis, m_axisList) | ||||
| axis->d_ptr->initializeTheme(m_theme.data(), true); | ||||
| foreach (QAbstractSeries* series, m_seriesMap.keys()) | ||||
| series->d_ptr->initializeTheme(m_seriesMap[series], m_theme.data(), true); | ||||
|
Michal Klocek
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r2273 | } | ||
| } | ||||
| } | ||||
|
Miikka Heikkinen
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r2516 | // decorateChart is only called when theme is forcibly initialized | ||
| void ChartThemeManager::decorateChart(QChart *chart, ChartTheme *theme) const | ||||
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r2273 | { | ||
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r2516 | chart->setBackgroundBrush(theme->chartBackgroundGradient()); | ||
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r2273 | |||
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r2516 | QPen pen(Qt::transparent); | ||
| QBrush brush; | ||||
| chart->setPlotAreaBackgroundBrush(brush); | ||||
| chart->setPlotAreaBackgroundPen(pen); | ||||
| chart->setPlotAreaBackgroundVisible(false); | ||||
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Miikka Heikkinen
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r2498 | |||
|
Michal Klocek
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r2273 | chart->setTitleFont(theme->masterFont()); | ||
| chart->setTitleBrush(theme->labelBrush()); | ||||
| chart->setDropShadowEnabled(theme->isBackgroundDropShadowEnabled()); | ||||
| } | ||||
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r2516 | // decorateLegend is only called when theme is forcibly initialized | ||
| void ChartThemeManager::decorateLegend(QLegend *legend, ChartTheme *theme) const | ||||
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Michal Klocek
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r2273 | { | ||
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r2516 | legend->setPen(theme->axisLinePen()); | ||
| legend->setBrush(theme->chartBackgroundGradient()); | ||||
| legend->setFont(theme->labelFont()); | ||||
| legend->setLabelBrush(theme->labelBrush()); | ||||
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r2273 | } | ||
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r2516 | int ChartThemeManager::createIndexKey(QList<int> keys) const | ||
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r2273 | { | ||
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r2712 | std::sort(keys.begin(), keys.end()); | ||
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r2273 | |||
| int key = 0; | ||||
| QList<int>::iterator i; | ||||
| i = keys.begin(); | ||||
| while (i != keys.end()) { | ||||
| if (*i != key) | ||||
| break; | ||||
| key++; | ||||
| i++; | ||||
| } | ||||
| return key; | ||||
| } | ||||
| int ChartThemeManager::seriesCount(QAbstractSeries::SeriesType type) const | ||||
| { | ||||
| int count = 0; | ||||
| QList<QAbstractSeries *> series = m_seriesMap.keys(); | ||||
| foreach(QAbstractSeries *s, series) { | ||||
| if (s->type() == type) | ||||
| count++; | ||||
| } | ||||
| return count; | ||||
| } | ||||
| void ChartThemeManager::handleSeriesAdded(QAbstractSeries *series) | ||||
| { | ||||
| int key = createIndexKey(m_seriesMap.values()); | ||||
| m_seriesMap.insert(series,key); | ||||
| series->d_ptr->initializeTheme(key,m_theme.data(),false); | ||||
| } | ||||
| void ChartThemeManager::handleSeriesRemoved(QAbstractSeries *series) | ||||
| { | ||||
| m_seriesMap.remove(series); | ||||
| } | ||||
| void ChartThemeManager::handleAxisAdded(QAbstractAxis *axis) | ||||
| { | ||||
| m_axisList.append(axis); | ||||
| axis->d_ptr->initializeTheme(m_theme.data(),false); | ||||
| } | ||||
| void ChartThemeManager::handleAxisRemoved(QAbstractAxis *axis) | ||||
| { | ||||
| m_axisList.removeAll(axis); | ||||
| } | ||||
| void ChartThemeManager::updateSeries(QAbstractSeries *series) | ||||
| { | ||||
| if(m_seriesMap.contains(series)){ | ||||
| series->d_ptr->initializeTheme(m_seriesMap[series],m_theme.data(),false); | ||||
| } | ||||
| } | ||||
| QList<QGradient> ChartThemeManager::generateSeriesGradients(const QList<QColor>& colors) | ||||
| { | ||||
| QList<QGradient> result; | ||||
| // Generate gradients in HSV color space | ||||
| foreach (const QColor &color, colors) { | ||||
| QLinearGradient g; | ||||
| qreal h = color.hsvHueF(); | ||||
| qreal s = color.hsvSaturationF(); | ||||
| QColor start = color; | ||||
| start.setHsvF(h, 0.0, 1.0); | ||||
| g.setColorAt(0.0, start); | ||||
| g.setColorAt(0.5, color); | ||||
| QColor end = color; | ||||
| end.setHsvF(h, s, 0.25); | ||||
| g.setColorAt(1.0, end); | ||||
| result << g; | ||||
| } | ||||
| return result; | ||||
| } | ||||
| QColor ChartThemeManager::colorAt(const QColor &start, const QColor &end, qreal pos) | ||||
| { | ||||
| Q_ASSERT(pos >= 0.0 && pos <= 1.0); | ||||
| qreal r = start.redF() + ((end.redF() - start.redF()) * pos); | ||||
| qreal g = start.greenF() + ((end.greenF() - start.greenF()) * pos); | ||||
| qreal b = start.blueF() + ((end.blueF() - start.blueF()) * pos); | ||||
| QColor c; | ||||
| c.setRgbF(r, g, b); | ||||
| return c; | ||||
| } | ||||
| QColor ChartThemeManager::colorAt(const QGradient &gradient, qreal pos) | ||||
| { | ||||
| Q_ASSERT(pos >= 0 && pos <= 1.0); | ||||
| QGradientStops stops = gradient.stops(); | ||||
| int count = stops.count(); | ||||
| // find previous stop relative to position | ||||
| QGradientStop prev = stops.first(); | ||||
| for (int i = 0; i < count; i++) { | ||||
| QGradientStop stop = stops.at(i); | ||||
| if (pos > stop.first) | ||||
| prev = stop; | ||||
| // given position is actually a stop position? | ||||
| if (pos == stop.first) { | ||||
| //qDebug() << "stop color" << pos; | ||||
| return stop.second; | ||||
| } | ||||
| } | ||||
| // find next stop relative to position | ||||
| QGradientStop next = stops.last(); | ||||
| for (int i = count - 1; i >= 0; i--) { | ||||
| QGradientStop stop = stops.at(i); | ||||
| if (pos < stop.first) | ||||
| next = stop; | ||||
| } | ||||
| //qDebug() << "prev" << prev.first << "pos" << pos << "next" << next.first; | ||||
| qreal range = next.first - prev.first; | ||||
| qreal posDelta = pos - prev.first; | ||||
| qreal relativePos = posDelta / range; | ||||
| //qDebug() << "range" << range << "posDelta" << posDelta << "relativePos" << relativePos; | ||||
| return colorAt(prev.second, next.second, relativePos); | ||||
| } | ||||
| #include "moc_chartthememanager_p.cpp" | ||||
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Titta Heikkala
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r2712 | QT_CHARTS_END_NAMESPACE | ||