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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: qt-info@nokia.com
**
** This software, including documentation, is protected by copyright
** controlled by Nokia Corporation. You may use this software in
** accordance with the terms and conditions contained in the Qt Phone
** Demo License Agreement.
**
****************************************************************************/
#include "coingraphicwidget.h"
#include <QApplication>
#include <QDateTime>
#include <QPainter>
#include <QWidget>
CoinGraphicWidget::CoinGraphicWidget(int month, qreal overallSum, qreal maxValue, QPixmap *coinPx)
: QGraphicsWidget(), graphCache(0)
{
nokiaFont.setFamily(QLatin1String("Nokia Sans"));
#ifdef Q_OS_SYMBIAN
nokiaFont.setPixelSize(18);
labelOffset = 2;
maxCoins = 75;
marginForCoins = 10;
#else
nokiaFont.setPixelSize(22);
labelOffset = 5;
maxCoins = 100;
marginForCoins = 16;
#endif
coinPixmap = coinPx;
// ###
int width = coinPixmap->size().width() + marginForCoins;
setMinimumWidth(width);
setPreferredWidth(width);
setMaximumWidth(width);
setMaximumHeight(QWIDGETSIZE_MAX);
setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Expanding);
labelLeft.load(QLatin1String(":/ico_left_%.png"));
labelMiddle.load(QLatin1String(":/label_bg.png"));
labelRight.load(QLatin1String(":/label_left_end2.png"));
db = qApp->property("settings").value<PData*>();
updateValue(month, overallSum, maxValue);
}
CoinGraphicWidget::~CoinGraphicWidget()
{
delete graphCache;
}
void CoinGraphicWidget::updateValue(int month, qreal overallSum, qreal maxValue)
{
QDate date = QDate::currentDate();
qreal monthValue;
db->beginGroup(QLatin1String("date"));
db->beginGroup(QString::number(date.year()));
monthValue = db->getValue(QString::number(month));
db->endGroup();
db->endGroup();
coins = qRound((monthValue / maxValue) * maxCoins); //maxCoins = 100%
for (int i = 0; i < coins; ++i)
offsets << qRound(qrand() % 4);
percentValue = 100 * monthValue / overallSum;
updateGraphCache(coins);
update();
updateGeometry();
}
void CoinGraphicWidget::updateGraphCache(int coins)
{
// Reset our cached pixmap
delete graphCache;
if (coins == 0) {
graphCache = new QPixmap();
setMinimumHeight(0);
setPreferredHeight(0);
return;
}
int labelHeight = labelLeft.size().height();
int coinHeight = coinPixmap->size().height();
int coinWidth = coinPixmap->size().width();
// More size to cover offsets and %-ballon size
int newWidth = coinWidth + marginForCoins;
int newHeight = coinHeight * coins + labelHeight + labelOffset;
graphCache = new QPixmap(QSize(newWidth, newHeight));
graphCache->fill(Qt::transparent);
QPainter p;
p.begin(graphCache);
QRect r = graphCache->rect();
int y = r.y() + labelHeight + labelOffset; // ###
for (int i = 0; i < coins; ++i) {
int x = r.x() + ((marginForCoins - 4) / 2) + offsets.at(i);
y += coinHeight;
p.drawPixmap(x, y, *coinPixmap);
}
#ifdef Q_OS_SYMBIAN
qreal middleScaleFactor = 1.5;
#else
qreal middleScaleFactor = 2.0;
#endif
QSize labelSize(labelLeft.width() + middleScaleFactor * labelMiddle.width()
+ labelRight.width(), labelHeight);
int labelX = r.x() + (r.width() - labelSize.width()) / 2;
int labelY = r.y();
p.setFont(nokiaFont);
p.setPen(QColor(68, 82, 83));
p.drawPixmap(labelX, labelY, labelLeft);
p.drawPixmap(labelX + labelLeft.width(), labelY,
labelMiddle.scaled(middleScaleFactor * labelMiddle.width(), labelHeight));
p.drawPixmap(labelX + labelLeft.width() + middleScaleFactor * labelMiddle.width(),
labelY, labelRight);
p.drawText(labelX + labelLeft.width(),
labelY + labelHeight - 17,
QString::number(percentValue, 'f', 2));
p.end();
setMinimumHeight(graphCache->size().height());
setPreferredHeight(graphCache->size().height());
}
void CoinGraphicWidget::paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
QWidget *widget)
{
QGraphicsWidget::paint(painter, option, widget);
if (graphCache->isNull())
return;
painter->setRenderHint(QPainter::SmoothPixmapTransform);
painter->setRenderHint(QPainter::Antialiasing);
// Centralize our cached pixmap
int x = rect().x();
int y = rect().bottom() - graphCache->size().height();
painter->drawPixmap(x, y, *graphCache);
}
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