chartthememanager.cpp
259 lines
| 7.4 KiB
| text/x-c
|
CppLexer
/ src / chartthememanager.cpp
Michal Klocek
|
r2273 | /**************************************************************************** | ||
| ** | ||||
| ** 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 "qabstractseries_p.h" | ||||
| #include "qabstractaxis_p.h" | ||||
| #include <QTime> | ||||
| //themes | ||||
| #include "chartthemesystem_p.h" | ||||
| #include "chartthemelight_p.h" | ||||
| #include "chartthemebluecerulean_p.h" | ||||
| #include "chartthemedark_p.h" | ||||
| #include "chartthemebrownsand_p.h" | ||||
| #include "chartthemebluencs_p.h" | ||||
| #include "chartthemehighcontrast_p.h" | ||||
| #include "chartthemeblueicy_p.h" | ||||
| QTCOMMERCIALCHART_BEGIN_NAMESPACE | ||||
| ChartThemeManager::ChartThemeManager(QChart* chart) : | ||||
| m_chart(chart) | ||||
| { | ||||
| qsrand(QTime(0, 0, 0).secsTo(QTime::currentTime())); | ||||
| } | ||||
| void ChartThemeManager::setTheme(QChart::ChartTheme theme) | ||||
| { | ||||
| if(m_theme.isNull() || theme != m_theme->id()) | ||||
| { | ||||
| switch (theme) { | ||||
| case QChart::ChartThemeLight: | ||||
| m_theme.reset(new ChartThemeLight()); | ||||
| break; | ||||
| case QChart::ChartThemeBlueCerulean: | ||||
| m_theme.reset(new ChartThemeBlueCerulean()); | ||||
| break; | ||||
| case QChart::ChartThemeDark: | ||||
| m_theme.reset(new ChartThemeDark()); | ||||
| break; | ||||
| case QChart::ChartThemeBrownSand: | ||||
| m_theme.reset(new ChartThemeBrownSand()); | ||||
| break; | ||||
| case QChart::ChartThemeBlueNcs: | ||||
| m_theme.reset(new ChartThemeBlueNcs()); | ||||
| break; | ||||
| case QChart::ChartThemeHighContrast: | ||||
| m_theme.reset(new ChartThemeHighContrast()); | ||||
| break; | ||||
| case QChart::ChartThemeBlueIcy: | ||||
| m_theme.reset(new ChartThemeBlueIcy()); | ||||
| break; | ||||
| default: | ||||
| m_theme.reset(new ChartThemeSystem()); | ||||
| break; | ||||
| } | ||||
| if(!m_theme.isNull()) | ||||
| { | ||||
| decorateChart(m_chart,m_theme.data(),true); | ||||
| decorateLegend(m_chart->legend(),m_theme.data(),true); | ||||
| 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); | ||||
| } | ||||
| } | ||||
| } | ||||
| } | ||||
| void ChartThemeManager::decorateChart(QChart *chart,ChartTheme* theme,bool force) const | ||||
| { | ||||
| QBrush brush; | ||||
| if (force || brush == chart->backgroundBrush()) | ||||
| chart->setBackgroundBrush(theme->chartBackgroundGradient()); | ||||
| chart->setTitleFont(theme->masterFont()); | ||||
| chart->setTitleBrush(theme->labelBrush()); | ||||
| chart->setDropShadowEnabled(theme->isBackgroundDropShadowEnabled()); | ||||
| } | ||||
| void ChartThemeManager::decorateLegend(QLegend *legend, ChartTheme* theme, bool force) const | ||||
| { | ||||
| QPen pen; | ||||
| QBrush brush; | ||||
| QFont font; | ||||
| if (force || pen == legend->pen()) | ||||
| legend->setPen(theme->axisLinePen()); | ||||
| if (force || brush == legend->brush()) | ||||
| legend->setBrush(theme->chartBackgroundGradient()); | ||||
| if (force || font == legend->font()) | ||||
| legend->setFont(theme->labelFont()); | ||||
| if (force || brush == legend->labelBrush()) | ||||
| legend->setLabelBrush(theme->labelBrush()); | ||||
| } | ||||
| int ChartThemeManager::createIndexKey(QList<int> keys) const | ||||
| { | ||||
| qSort(keys); | ||||
| 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(); | ||||
| // TODO: tune the algorithm to give nice results with most base colors defined in | ||||
| // most themes. The rest of the gradients we can define manually in theme specific | ||||
| // implementation. | ||||
| 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" | ||||
| QTCOMMERCIALCHART_END_NAMESPACE | ||||