charttheme.cpp
393 lines
| 11.4 KiB
| text/x-c
|
CppLexer
/ src / charttheme.cpp
Jani Honkonen
|
r794 | /**************************************************************************** | ||
| ** | ||||
| ** 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 | ||||
| ** $QT_END_LICENSE$ | ||||
| ** | ||||
| ****************************************************************************/ | ||||
Tero Ahola
|
r103 | #include "charttheme_p.h" | ||
| #include "qchart.h" | ||||
|
Tero Ahola
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r584 | #include "qchartview.h" | ||
sauimone
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r540 | #include "qlegend.h" | ||
Michal Klocek
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r176 | #include "qchartaxis.h" | ||
|
Jani Honkonen
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r324 | #include <QTime> | ||
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Tero Ahola
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r103 | |||
|
Michal Klocek
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r143 | //series | ||
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sauimone
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r214 | #include "qbarset.h" | ||
|
sauimone
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r338 | #include "qbarseries.h" | ||
| #include "qstackedbarseries.h" | ||||
| #include "qpercentbarseries.h" | ||||
|
Michal Klocek
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r349 | #include "qlineseries.h" | ||
|
Michal Klocek
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r421 | #include "qareaseries.h" | ||
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Tero Ahola
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r182 | #include "qscatterseries.h" | ||
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Jani Honkonen
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r163 | #include "qpieseries.h" | ||
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Jani Honkonen
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r203 | #include "qpieslice.h" | ||
Marek Rosa
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r401 | #include "qsplineseries.h" | ||
|
Jani Honkonen
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r163 | |||
|
Michal Klocek
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r143 | //items | ||
| #include "axisitem_p.h" | ||||
|
sauimone
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r666 | #include "barchartitem_p.h" | ||
| #include "stackedbarchartitem_p.h" | ||||
| #include "percentbarchartitem_p.h" | ||||
|
Michal Klocek
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r145 | #include "linechartitem_p.h" | ||
|
Michal Klocek
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r421 | #include "areachartitem_p.h" | ||
|
Michal Klocek
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r470 | #include "scatterchartitem_p.h" | ||
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Jani Honkonen
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r568 | #include "piechartitem_p.h" | ||
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Marek Rosa
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r460 | #include "splinechartitem_p.h" | ||
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Tero Ahola
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r103 | |||
|
Michal Klocek
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r143 | //themes | ||
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Jani Honkonen
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r494 | #include "chartthemedefault_p.h" | ||
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Tero Ahola
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r651 | #include "chartthemelight_p.h" | ||
| #include "chartthemebluecerulean_p.h" | ||||
| #include "chartthemedark_p.h" | ||||
| #include "chartthemebrownsand_p.h" | ||||
| #include "chartthemebluencs_p.h" | ||||
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Tero Ahola
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r757 | #include "chartthemehighcontrast_p.h" | ||
| #include "chartthemeblueicy_p.h" | ||||
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Tero Ahola
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r125 | |||
|
Michal Klocek
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r143 | QTCOMMERCIALCHART_BEGIN_NAMESPACE | ||
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Tero Ahola
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r614 | ChartTheme::ChartTheme(QChart::ChartTheme id) : | ||
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Tero Ahola
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r717 | m_masterFont(QFont("arial", 12)), | ||
| m_labelFont(QFont("arial", 10)), | ||||
|
Tero Ahola
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r614 | m_titleBrush(QColor(QRgb(0x000000))), | ||
| m_axisLinePen(QPen(QRgb(0x000000))), | ||||
| m_axisLabelBrush(QColor(QRgb(0x000000))), | ||||
| m_backgroundShadesPen(Qt::NoPen), | ||||
| m_backgroundShadesBrush(Qt::NoBrush), | ||||
| m_backgroundShades(BackgroundShadesNone), | ||||
| m_gridLinePen(QPen(QRgb(0x000000))) | ||||
|
Michal Klocek
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r143 | { | ||
|
Michal Klocek
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r153 | m_id = id; | ||
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Jani Honkonen
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r324 | qsrand(QTime(0,0,0).secsTo(QTime::currentTime())); | ||
|
Michal Klocek
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r143 | } | ||
|
Michal Klocek
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r153 | ChartTheme* ChartTheme::createTheme(QChart::ChartTheme theme) | ||
|
Michal Klocek
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r143 | { | ||
| switch(theme) { | ||||
|
Tero Ahola
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r651 | case QChart::ChartThemeLight: | ||
| return new ChartThemeLight(); | ||||
| case QChart::ChartThemeBlueCerulean: | ||||
| return new ChartThemeBlueCerulean(); | ||||
| case QChart::ChartThemeDark: | ||||
| return new ChartThemeDark(); | ||||
| case QChart::ChartThemeBrownSand: | ||||
| return new ChartThemeBrownSand(); | ||||
| case QChart::ChartThemeBlueNcs: | ||||
| return new ChartThemeBlueNcs(); | ||||
|
Tero Ahola
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r757 | case QChart::ChartThemeHighContrast: | ||
| return new ChartThemeHighContrast(); | ||||
| case QChart::ChartThemeBlueIcy: | ||||
| return new ChartThemeBlueIcy(); | ||||
|
Jani Honkonen
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r494 | default: | ||
| return new ChartThemeDefault(); | ||||
|
Michal Klocek
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r143 | } | ||
| } | ||||
|
Michal Klocek
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r645 | void ChartTheme::decorate(QChart* chart,bool force) | ||
|
Michal Klocek
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r143 | { | ||
|
Michal Klocek
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r645 | QBrush brush; | ||
| if(brush == chart->backgroundBrush() || force) | ||||
|
Tero Ahola
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r757 | chart->setBackgroundBrush(m_chartBackgroundGradient); | ||
|
Michal Klocek
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r645 | chart->setTitleFont(m_masterFont); | ||
| chart->setTitleBrush(m_titleBrush); | ||||
|
Michal Klocek
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r143 | } | ||
|
Michal Klocek
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r645 | void ChartTheme::decorate(QLegend* legend,bool force) | ||
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sauimone
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r540 | { | ||
|
Michal Klocek
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r645 | QPen pen; | ||
| QBrush brush; | ||||
| if (pen == legend->pen() || force){ | ||||
|
sauimone
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r783 | legend->setPen(Qt::NoPen); | ||
|
Michal Klocek
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r645 | } | ||
| if (brush == legend->brush() || force) { | ||||
| legend->setBrush(m_chartBackgroundGradient); | ||||
| } | ||||
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sauimone
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r540 | } | ||
|
Michal Klocek
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r645 | void ChartTheme::decorate(QAreaSeries* series, int index,bool force) | ||
|
Michal Klocek
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r421 | { | ||
|
Michal Klocek
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r644 | QPen pen; | ||
| QBrush brush; | ||||
|
Michal Klocek
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r421 | |||
|
Michal Klocek
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r645 | if (pen == series->pen() || force){ | ||
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Tero Ahola
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r653 | pen.setColor(colorAt(m_seriesGradients.at(index % m_seriesGradients.size()), 0.0)); | ||
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Michal Klocek
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r644 | pen.setWidthF(2); | ||
| series->setPen(pen); | ||||
| } | ||||
|
Michal Klocek
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r645 | if (brush == series->brush() || force) { | ||
|
Michal Klocek
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r644 | QBrush brush(m_seriesColors.at(index % m_seriesColors.size())); | ||
| series->setBrush(brush); | ||||
| } | ||||
|
Michal Klocek
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r421 | } | ||
|
Michal Klocek
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r645 | void ChartTheme::decorate(QLineSeries* series,int index,bool force) | ||
|
Tero Ahola
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r103 | { | ||
|
Michal Klocek
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r644 | QPen pen; | ||
|
Michal Klocek
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r645 | if(pen == series->pen() || force ){ | ||
|
Michal Klocek
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r644 | pen.setColor(m_seriesColors.at(index%m_seriesColors.size())); | ||
| pen.setWidthF(2); | ||||
| series->setPen(pen); | ||||
| } | ||||
|
Tero Ahola
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r103 | } | ||
|
Tero Ahola
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r653 | void ChartTheme::decorate(QBarSeries* series, int index, bool force) | ||
|
Tero Ahola
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r108 | { | ||
|
Michal Klocek
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r645 | QBrush brush; | ||
|
Tero Ahola
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r653 | QPen pen; | ||
|
sauimone
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r357 | QList<QBarSet*> sets = series->barSets(); | ||
|
Michal Klocek
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r645 | |||
|
Tero Ahola
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r661 | qreal takeAtPos = 0.5; | ||
| qreal step = 0.2; | ||||
| if (sets.count() > 1 ) { | ||||
| step = 1.0 / (qreal) sets.count(); | ||||
| if (sets.count() % m_seriesGradients.count()) | ||||
| step *= m_seriesGradients.count(); | ||||
| else | ||||
| step *= (m_seriesGradients.count() - 1); | ||||
| } | ||||
|
Michal Klocek
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r645 | |||
|
Tero Ahola
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r661 | for (int i(0); i < sets.count(); i++) { | ||
| int colorIndex = (index + i) % m_seriesGradients.count(); | ||||
| if (i > 0 && i % m_seriesGradients.count() == 0) { | ||||
| // There is no dedicated base color for each sets, generate more colors | ||||
| takeAtPos += step; | ||||
| if (takeAtPos == 1.0) | ||||
| takeAtPos += step; | ||||
| takeAtPos -= (int) takeAtPos; | ||||
|
sauimone
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r512 | } | ||
|
Tero Ahola
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r661 | qDebug() << "pos:" << takeAtPos; | ||
| if (brush == sets.at(i)->brush() || force ) | ||||
| sets.at(i)->setBrush(colorAt(m_seriesGradients.at(colorIndex), takeAtPos)); | ||||
|
Tero Ahola
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r103 | |||
|
Tero Ahola
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r653 | // Pick label color from the opposite end of the gradient. | ||
| // 0.3 as a boundary seems to work well. | ||||
|
Tero Ahola
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r661 | if (takeAtPos < 0.3) | ||
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sauimone
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r820 | sets.at(i)->setLabelBrush(colorAt(m_seriesGradients.at(index % m_seriesGradients.size()), 1)); | ||
|
Tero Ahola
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r653 | else | ||
|
sauimone
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r820 | sets.at(i)->setLabelBrush(colorAt(m_seriesGradients.at(index % m_seriesGradients.size()), 0)); | ||
|
Michal Klocek
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r645 | |||
|
Tero Ahola
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r653 | if (pen == sets.at(i)->pen() || force) { | ||
| QColor c = colorAt(m_seriesGradients.at(index % m_seriesGradients.size()), 0.0); | ||||
| sets.at(i)->setPen(c); | ||||
|
sauimone
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r512 | } | ||
|
sauimone
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r164 | } | ||
|
Michal Klocek
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r143 | } | ||
|
Tero Ahola
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r103 | |||
|
Michal Klocek
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r645 | void ChartTheme::decorate(QScatterSeries* series, int index,bool force) | ||
|
Tero Ahola
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r182 | { | ||
|
Michal Klocek
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r644 | QPen pen; | ||
| QBrush brush; | ||||
|
Michal Klocek
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r645 | if (pen == series->pen() || force) { | ||
|
Tero Ahola
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r653 | pen.setColor(colorAt(m_seriesGradients.at(index % m_seriesGradients.size()), 0.0)); | ||
|
Michal Klocek
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r644 | pen.setWidthF(2); | ||
| series->setPen(pen); | ||||
| } | ||||
|
Michal Klocek
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r645 | if (brush == series->brush() || force) { | ||
|
Michal Klocek
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r644 | QBrush brush(m_seriesColors.at(index % m_seriesColors.size())); | ||
| series->setBrush(brush); | ||||
| } | ||||
|
Tero Ahola
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r182 | } | ||
|
Michal Klocek
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r645 | void ChartTheme::decorate(QPieSeries* series, int index, bool force) | ||
|
Jani Honkonen
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r163 | { | ||
|
Jani Honkonen
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r818 | |||
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Tero Ahola
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r507 | for (int i(0); i < series->slices().count(); i++) { | ||
|
Jani Honkonen
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r691 | |||
| QColor penColor = colorAt(m_seriesGradients.at(index % m_seriesGradients.size()), 0.0); | ||||
|
Tero Ahola
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r653 | |||
| // Get color for a slice from a gradient linearly, beginning from the start of the gradient | ||||
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Tero Ahola
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r661 | qreal pos = (qreal) (i + 1) / (qreal) series->count(); | ||
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Jani Honkonen
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r691 | QColor brushColor = colorAt(m_seriesGradients.at(index % m_seriesGradients.size()), pos); | ||
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Jani Honkonen
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r818 | QPieSlice *s = series->slices().at(i); | ||
|
Jani Honkonen
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r822 | PieSliceData data = PieSliceData::data(s); | ||
|
Jani Honkonen
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r691 | |||
| if (data.m_slicePen.isThemed() || force) { | ||||
| data.m_slicePen = penColor; | ||||
| data.m_slicePen.setThemed(true); | ||||
| } | ||||
| if (data.m_sliceBrush.isThemed() || force) { | ||||
| data.m_sliceBrush = brushColor; | ||||
| data.m_sliceBrush.setThemed(true); | ||||
| } | ||||
|
Jani Honkonen
|
r714 | if (data.m_labelPen.isThemed() || force) { | ||
| data.m_labelPen = QPen(m_titleBrush.color()); | ||||
| data.m_labelPen.setThemed(true); | ||||
| } | ||||
| if (data.m_labelFont.isThemed() || force) { | ||||
|
Tero Ahola
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r717 | data.m_labelFont = m_labelFont; | ||
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Jani Honkonen
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r714 | data.m_labelFont.setThemed(true); | ||
| } | ||||
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Jani Honkonen
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r822 | if (PieSliceData::data(s) != data) { | ||
| PieSliceData::data(s) = data; | ||||
| emit PieSliceData::data(s).emitChangedSignal(s); | ||||
|
Michal Klocek
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r645 | } | ||
|
Jani Honkonen
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r163 | } | ||
| } | ||||
|
Michal Klocek
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r645 | void ChartTheme::decorate(QSplineSeries* series, int index, bool force) | ||
|
Marek Rosa
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r401 | { | ||
|
Michal Klocek
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r644 | QPen pen; | ||
|
Michal Klocek
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r645 | if(pen == series->pen() || force){ | ||
|
Michal Klocek
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r644 | pen.setColor(m_seriesColors.at(index%m_seriesColors.size())); | ||
| pen.setWidthF(2); | ||||
| series->setPen(pen); | ||||
| } | ||||
|
Marek Rosa
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r401 | } | ||
|
Michal Klocek
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r645 | void ChartTheme::decorate(QChartAxis* axis,bool axisX, bool force) | ||
|
Tero Ahola
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r548 | { | ||
|
Michal Klocek
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r645 | QPen pen; | ||
| QBrush brush; | ||||
| QFont font; | ||||
|
Tero Ahola
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r548 | if (axis->isAxisVisible()) { | ||
|
Michal Klocek
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r645 | |||
| if(brush == axis->labelsBrush() || force){ | ||||
| axis->setLabelsBrush(m_axisLabelBrush); | ||||
| } | ||||
| if(pen == axis->labelsPen() || force){ | ||||
| axis->setLabelsPen(Qt::NoPen); // NoPen for performance reasons | ||||
| } | ||||
| if (axis->shadesVisible() || force) { | ||||
| if(brush == axis->shadesBrush() || force){ | ||||
| axis->setShadesBrush(m_backgroundShadesBrush); | ||||
| } | ||||
| if(pen == axis->shadesPen() || force){ | ||||
| axis->setShadesPen(m_backgroundShadesPen); | ||||
| } | ||||
| if(force && (m_backgroundShades == BackgroundShadesBoth | ||||
| || (m_backgroundShades == BackgroundShadesVertical && axisX) | ||||
| || (m_backgroundShades == BackgroundShadesHorizontal && !axisX))){ | ||||
| axis->setShadesVisible(true); | ||||
| } | ||||
| } | ||||
| if(pen == axis->axisPen() || force){ | ||||
| axis->setAxisPen(m_axisLinePen); | ||||
| } | ||||
| if(pen == axis->gridLinePen() || force){ | ||||
| axis->setGridLinePen(m_gridLinePen); | ||||
| } | ||||
| if(font == axis->labelsFont() || force){ | ||||
|
Tero Ahola
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r717 | axis->setLabelsFont(m_labelFont); | ||
|
Tero Ahola
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r548 | } | ||
| } | ||||
| } | ||||
|
Tero Ahola
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r507 | void ChartTheme::generateSeriesGradients() | ||
| { | ||||
| // Generate gradients in HSV color space | ||||
| foreach (QColor color, m_seriesColors) { | ||||
| 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; | ||||
|
Tero Ahola
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r656 | start.setHsvF(h, 0.0, 1.0); | ||
|
Tero Ahola
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r507 | g.setColorAt(0.0, start); | ||
| g.setColorAt(0.5, color); | ||||
| QColor end = color; | ||||
| end.setHsvF(h, s, 0.25); | ||||
| g.setColorAt(1.0, end); | ||||
| m_seriesGradients << g; | ||||
| } | ||||
| } | ||||
|
Jani Honkonen
|
r494 | QColor ChartTheme::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 ChartTheme::colorAt(const QGradient &gradient, qreal pos) | ||||
| { | ||||
| Q_ASSERT(pos >=0 && pos <= 1.0); | ||||
| // another possibility: | ||||
| // http://stackoverflow.com/questions/3306786/get-intermediate-color-from-a-gradient | ||||
| 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); | ||||
| } | ||||
|
Tero Ahola
|
r103 | QTCOMMERCIALCHART_END_NAMESPACE | ||