charttheme.cpp
399 lines
| 11.8 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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r1001 | #include "qchart_p.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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r1541 | #include "qabstractaxis.h" | ||
Jani Honkonen
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r324 | #include <QTime> | ||
Tero Ahola
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r103 | |||
Michal Klocek
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r143 | //series | ||
sauimone
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r214 | #include "qbarset.h" | ||
sauimone
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r1586 | #include "qabstractbarseries.h" | ||
sauimone
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r338 | #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" | ||
Tero Ahola
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r182 | #include "qscatterseries.h" | ||
Jani Honkonen
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r163 | #include "qpieseries.h" | ||
Jani Honkonen
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r203 | #include "qpieslice.h" | ||
Jani Honkonen
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r1274 | #include "qpieslice_p.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 | ||
Michal Klocek
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r1006 | #include "chartaxis_p.h" | ||
sauimone
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r1674 | #include "abstractbarchartitem_p.h" | ||
sauimone
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r666 | #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" | ||
Jani Honkonen
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r568 | #include "piechartitem_p.h" | ||
Marek Rosa
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r460 | #include "splinechartitem_p.h" | ||
Tero Ahola
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r103 | |||
Michal Klocek
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r143 | //themes | ||
Tero Ahola
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r853 | #include "chartthemesystem_p.h" | ||
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" | ||||
Tero Ahola
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r757 | #include "chartthemehighcontrast_p.h" | ||
#include "chartthemeblueicy_p.h" | ||||
Tero Ahola
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r125 | |||
Michal Klocek
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r143 | QTCOMMERCIALCHART_BEGIN_NAMESPACE | ||
Tero Ahola
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r614 | ChartTheme::ChartTheme(QChart::ChartTheme id) : | ||
Jani Honkonen
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r1919 | m_id(id), | ||
Tero Ahola
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r853 | m_masterFont(QFont("arial", 14)), | ||
Tero Ahola
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r717 | m_labelFont(QFont("arial", 10)), | ||
Tero Ahola
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r1528 | m_labelBrush(QColor(QRgb(0x000000))), | ||
Tero Ahola
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r614 | m_axisLinePen(QPen(QRgb(0x000000))), | ||
m_backgroundShadesPen(Qt::NoPen), | ||||
m_backgroundShadesBrush(Qt::NoBrush), | ||||
m_backgroundShades(BackgroundShadesNone), | ||||
Tero Ahola
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r1001 | m_backgroundDropShadowEnabled(false), | ||
Michal Klocek
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r943 | m_gridLinePen(QPen(QRgb(0x000000))), | ||
m_force(false) | ||||
Michal Klocek
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r143 | { | ||
Jani Honkonen
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r2097 | qsrand(QTime(0, 0, 0).secsTo(QTime::currentTime())); | ||
Michal Klocek
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r143 | } | ||
Jani Honkonen
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r2104 | ChartTheme *ChartTheme::createTheme(QChart::ChartTheme theme) | ||
Michal Klocek
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r143 | { | ||
Jani Honkonen
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r2097 | switch (theme) { | ||
Marek Rosa
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r1760 | 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(); | ||||
case QChart::ChartThemeHighContrast: | ||||
return new ChartThemeHighContrast(); | ||||
case QChart::ChartThemeBlueIcy: | ||||
return new ChartThemeBlueIcy(); | ||||
default: | ||||
return new ChartThemeSystem(); | ||||
Michal Klocek
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r143 | } | ||
} | ||||
Marek Rosa
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r948 | void ChartTheme::decorate(QChart *chart) | ||
Michal Klocek
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r143 | { | ||
Michal Klocek
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r645 | QBrush brush; | ||
Jani Honkonen
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r2097 | if (m_force || brush == chart->backgroundBrush()) | ||
Tero Ahola
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r757 | chart->setBackgroundBrush(m_chartBackgroundGradient); | ||
Michal Klocek
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r645 | chart->setTitleFont(m_masterFont); | ||
Tero Ahola
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r1528 | chart->setTitleBrush(m_labelBrush); | ||
Tero Ahola
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r1462 | chart->setDropShadowEnabled(m_backgroundDropShadowEnabled); | ||
Michal Klocek
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r143 | } | ||
Marek Rosa
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r948 | void ChartTheme::decorate(QLegend *legend) | ||
sauimone
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r540 | { | ||
Michal Klocek
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r645 | QPen pen; | ||
QBrush brush; | ||||
sauimone
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r1527 | QFont font; | ||
Michal Klocek
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r645 | |||
Marek Rosa
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r1776 | if (m_force || pen == legend->pen()) | ||
Tero Ahola
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r1455 | legend->setPen(m_axisLinePen); | ||
Michal Klocek
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r645 | |||
Marek Rosa
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r1776 | if (m_force || brush == legend->brush()) | ||
Michal Klocek
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r645 | legend->setBrush(m_chartBackgroundGradient); | ||
sauimone
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r1527 | |||
Marek Rosa
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r1776 | if (m_force || font == legend->font()) | ||
sauimone
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r1527 | legend->setFont(m_labelFont); | ||
Marek Rosa
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r1776 | if (m_force || brush == legend->labelBrush()) | ||
Tero Ahola
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r1528 | legend->setLabelBrush(m_labelBrush); | ||
sauimone
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r540 | } | ||
Marek Rosa
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r948 | void ChartTheme::decorate(QAreaSeries *series, int index) | ||
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 | |||
Jani Honkonen
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r2097 | if (m_force || pen == series->pen()) { | ||
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); | ||||
} | ||||
Marek Rosa
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r1776 | if (m_force || brush == series->brush()) { | ||
Marek Rosa
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r1760 | QBrush brush(m_seriesColors.at(index % m_seriesColors.size())); | ||
series->setBrush(brush); | ||||
Michal Klocek
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r644 | } | ||
Michal Klocek
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r421 | } | ||
Jani Honkonen
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r2097 | void ChartTheme::decorate(QLineSeries *series, int index) | ||
Tero Ahola
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r103 | { | ||
Michal Klocek
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r644 | QPen pen; | ||
Jani Honkonen
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r2097 | if (m_force || pen == series->pen()) { | ||
pen.setColor(m_seriesColors.at(index % m_seriesColors.size())); | ||||
Michal Klocek
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r644 | pen.setWidthF(2); | ||
series->setPen(pen); | ||||
} | ||||
Tero Ahola
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r103 | } | ||
sauimone
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r1584 | void ChartTheme::decorate(QAbstractBarSeries *series, int index) | ||
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; | ||
Marek Rosa
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r948 | 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; | ||||
Jani Honkonen
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r2097 | if (sets.count() > 1) { | ||
Tero Ahola
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r661 | 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 | } | ||
Marek Rosa
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r1776 | if (m_force || brush == sets.at(i)->brush()) | ||
Tero Ahola
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r661 | 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. | ||||
Marek Rosa
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r1776 | if (m_force || brush == sets.at(i)->labelBrush()) { | ||
Marek Rosa
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r1760 | if (takeAtPos < 0.3) | ||
sets.at(i)->setLabelBrush(colorAt(m_seriesGradients.at(index % m_seriesGradients.size()), 1)); | ||||
else | ||||
sets.at(i)->setLabelBrush(colorAt(m_seriesGradients.at(index % m_seriesGradients.size()), 0)); | ||||
} | ||||
Michal Klocek
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r645 | |||
Marek Rosa
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r1776 | if (m_force || pen == sets.at(i)->pen()) { | ||
Tero Ahola
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r653 | 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 | |||
Marek Rosa
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r948 | void ChartTheme::decorate(QScatterSeries *series, int index) | ||
Tero Ahola
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r182 | { | ||
Michal Klocek
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r644 | QPen pen; | ||
QBrush brush; | ||||
Marek Rosa
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r1776 | if (m_force || pen == series->pen()) { | ||
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); | ||||
} | ||||
Marek Rosa
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r1776 | if (m_force || brush == series->brush()) { | ||
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 | } | ||
Marek Rosa
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r948 | void ChartTheme::decorate(QPieSeries *series, int index) | ||
Jani Honkonen
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r163 | { | ||
Jani Honkonen
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r818 | |||
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 | ||||
Jani Honkonen
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r2097 | qreal pos = (qreal)(i + 1) / (qreal) series->count(); | ||
Jani Honkonen
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r691 | QColor brushColor = colorAt(m_seriesGradients.at(index % m_seriesGradients.size()), pos); | ||
Jani Honkonen
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r818 | QPieSlice *s = series->slices().at(i); | ||
Jani Honkonen
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r1274 | QPieSlicePrivate *d = QPieSlicePrivate::fromSlice(s); | ||
Jani Honkonen
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r691 | |||
Marek Rosa
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r1776 | if (m_force || d->m_data.m_slicePen.isThemed()) | ||
Jani Honkonen
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r1274 | d->setPen(penColor, true); | ||
Jani Honkonen
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r691 | |||
Marek Rosa
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r1776 | if (m_force || d->m_data.m_sliceBrush.isThemed()) | ||
Jani Honkonen
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r1274 | d->setBrush(brushColor, true); | ||
Jani Honkonen
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r714 | |||
Marek Rosa
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r1776 | if (m_force || d->m_data.m_labelBrush.isThemed()) | ||
Tero Ahola
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r1528 | d->setLabelBrush(m_labelBrush.color(), true); | ||
Jani Honkonen
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r714 | |||
Marek Rosa
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r1776 | if (m_force || d->m_data.m_labelFont.isThemed()) | ||
Jani Honkonen
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r1274 | d->setLabelFont(m_labelFont, true); | ||
Jani Honkonen
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r163 | } | ||
} | ||||
Marek Rosa
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r948 | void ChartTheme::decorate(QSplineSeries *series, int index) | ||
Marek Rosa
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r401 | { | ||
Michal Klocek
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r644 | QPen pen; | ||
Jani Honkonen
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r2097 | if (m_force || pen == series->pen()) { | ||
pen.setColor(m_seriesColors.at(index % m_seriesColors.size())); | ||||
Michal Klocek
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r644 | pen.setWidthF(2); | ||
series->setPen(pen); | ||||
} | ||||
Marek Rosa
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r401 | } | ||
Michal Klocek
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r1698 | void ChartTheme::decorate(QAbstractAxis *axis) | ||
Tero Ahola
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r548 | { | ||
Michal Klocek
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r645 | QPen pen; | ||
QBrush brush; | ||||
QFont font; | ||||
Jani Honkonen
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r2097 | bool axisX = axis->orientation() == Qt::Horizontal; | ||
Michal Klocek
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r1698 | |||
Marek Rosa
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r1844 | if (axis->isLineVisible()) { | ||
Michal Klocek
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r645 | |||
Jani Honkonen
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r2097 | if (m_force || brush == axis->labelsBrush()) | ||
Tero Ahola
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r1528 | axis->setLabelsBrush(m_labelBrush); | ||
Michal Klocek
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r645 | |||
Michal Klocek
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r2153 | //TODO: introduce axis brush | ||
if (m_force || brush == axis->titleBrush()) | ||||
axis->setTitleBrush(m_labelBrush); | ||||
Jani Honkonen
|
r2097 | if (m_force || pen == axis->labelsPen()) | ||
axis->setLabelsPen(Qt::NoPen); // NoPen for performance reasons | ||||
Michal Klocek
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r645 | |||
Michal Klocek
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r2153 | if (m_force || pen == axis->titlePen()) | ||
axis->setTitlePen(Qt::NoPen); // Noen for performance reasons | ||||
Marek Rosa
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r1776 | if (m_force || axis->shadesVisible()) { | ||
Michal Klocek
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r645 | |||
Jani Honkonen
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r2097 | if (m_force || brush == axis->shadesBrush()) | ||
Marek Rosa
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r1760 | axis->setShadesBrush(m_backgroundShadesBrush); | ||
Michal Klocek
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r645 | |||
Jani Honkonen
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r2097 | if (m_force || pen == axis->shadesPen()) | ||
Marek Rosa
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r1760 | axis->setShadesPen(m_backgroundShadesPen); | ||
Michal Klocek
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r645 | |||
Jani Honkonen
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r2097 | if (m_force && (m_backgroundShades == BackgroundShadesBoth | ||
Marek Rosa
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r1760 | || (m_backgroundShades == BackgroundShadesVertical && axisX) | ||
Jani Honkonen
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r2097 | || (m_backgroundShades == BackgroundShadesHorizontal && !axisX))) { | ||
Marek Rosa
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r1760 | axis->setShadesVisible(true); | ||
} | ||||
} | ||||
Michal Klocek
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r645 | |||
Jani Honkonen
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r2097 | if (m_force || pen == axis->linePen()) | ||
Marek Rosa
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r1844 | axis->setLinePen(m_axisLinePen); | ||
Michal Klocek
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r645 | |||
Jani Honkonen
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r2097 | if (m_force || pen == axis->gridLinePen()) | ||
Michal Klocek
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r645 | axis->setGridLinePen(m_gridLinePen); | ||
Jani Honkonen
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r2097 | if (m_force || font == axis->labelsFont()) | ||
Tero Ahola
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r717 | axis->setLabelsFont(m_labelFont); | ||
Michal Klocek
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r2153 | |||
//TODO: discuss with Tero | ||||
if (m_force || font == axis->titleFont()){ | ||||
QFont font(m_labelFont); | ||||
font.setBold(true); | ||||
axis->setTitleFont(font); | ||||
} | ||||
Tero Ahola
|
r548 | } | ||
} | ||||
Tero Ahola
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r507 | void ChartTheme::generateSeriesGradients() | ||
{ | ||||
// Generate gradients in HSV color space | ||||
Jani Honkonen
|
r2097 | foreach (const QColor &color, m_seriesColors) { | ||
Tero Ahola
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r507 | 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
|
r656 | start.setHsvF(h, 0.0, 1.0); | ||
Tero Ahola
|
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) | ||
{ | ||||
Marek Rosa
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r948 | Q_ASSERT(pos >= 0.0 && pos <= 1.0); | ||
Jani Honkonen
|
r494 | 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) | ||||
{ | ||||
Marek Rosa
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r948 | Q_ASSERT(pos >= 0 && pos <= 1.0); | ||
Jani Honkonen
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r494 | |||
QGradientStops stops = gradient.stops(); | ||||
int count = stops.count(); | ||||
// find previous stop relative to position | ||||
QGradientStop prev = stops.first(); | ||||
Marek Rosa
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r948 | for (int i = 0; i < count; i++) { | ||
Jani Honkonen
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r494 | 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(); | ||||
Marek Rosa
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r948 | for (int i = count - 1; i >= 0; i--) { | ||
Jani Honkonen
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r494 | 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); | ||||
} | ||||
Michal Klocek
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r943 | void ChartTheme::setForced(bool enabled) | ||
{ | ||||
Marek Rosa
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r1776 | m_force = enabled; | ||
Michal Klocek
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r943 | } | ||
Tero Ahola
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r103 | QTCOMMERCIALCHART_END_NAMESPACE | ||