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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 <QGraphicsLinearLayout>
#include "calculatorscreen.h"
#include "pdata.h"
#include "label.h"
#include "button.h"
#include "titlebar.h"
#include "dataresource.h"
#include "calculatorengine.h"
CalculatorScreen::CalculatorScreen()
: Page()
{
setContentsMargins(0, 0, 0, 0);
mainLayout = new QGraphicsLinearLayout(Qt::Vertical);
mainLayout->setSpacing(0);
mainLayout->setContentsMargins(0, 0, 0, 0);
setLayout(mainLayout);
m_engine = new CalculatorEngine;
m_engine->connect(&_digitMapper, SIGNAL(mapped(int)), SLOT(pressDigit(int)));
m_engine->connect(&_operatorMapper, SIGNAL(mapped(int)), SLOT(pressOperator(int)));
TitleBar *title = new TitleBar;
mainLayout->addItem(title);
createCarousel();
createDisplay();
createKeyboard();
connect(title, SIGNAL(closeClicked()), qApp, SLOT(quit()));
connect(m_engine, SIGNAL(displayChanged(QString)),
SLOT(handleDisplayChange(QString)));
}
CalculatorScreen::~CalculatorScreen()
{
delete m_engine;
}
void CalculatorScreen::setDisplayText(const QString &text)
{
display->setText(text);
}
QString CalculatorScreen::optionSelected()
{
return _menu->selected();
}
void CalculatorScreen::createDisplay()
{
QFont nokiaFont("Nokia Sans");
nokiaFont.setPixelSize(Resource::intValue("Calculator/Screen.fontSize"));
display = new Label;
display->setAlignment(Qt::AlignVCenter | Qt::AlignRight);
display->setFont(nokiaFont);
setDisplayText("0.00");
PixmapWidget *image = \
new PixmapWidget(PixmapLoader::pixmap(":/calculator_display.png"));
QGraphicsLinearLayout *layout = new QGraphicsLinearLayout(image);
layout->addItem(display);
mainLayout->addItem(image);
}
void CalculatorScreen::createCarousel()
{
_menu = new HorizontalMenu();
_menu->setZValue(1);
mainLayout->addItem(_menu);
}
void CalculatorScreen::createKeyboard()
{
QStringList buttons;
// Line: 7 8 9 /
buttons << "7" << "8" << "9" << "/";
mainLayout->addItem(createKeyboardLine(buttons));
buttons.clear();
// Line: 4 5 6 -
buttons << "4" << "5" << "6" << "-";
mainLayout->addItem(createKeyboardLine(buttons));
buttons.clear();
// Line: 1 2 3 +
buttons << "1" << "2" << "3" << "+";
mainLayout->addItem(createKeyboardLine(buttons));
buttons.clear();
// Line: . 0 X =
buttons << "." << "0" << "x" << "=";
mainLayout->addItem(createKeyboardLine(buttons));
buttons.clear();
// Line: Clear Submit
buttons << "CLEAR" << "SUBMIT";
mainLayout->addItem(createKeyboardLine(buttons));
buttons.clear();
}
QGraphicsLinearLayout *CalculatorScreen::createKeyboardLine(const QStringList &items)
{
static QString operations = "+-x/.=";
QGraphicsLinearLayout *layout = new QGraphicsLinearLayout;
layout->setContentsMargins(0, 0, 0, 0);
layout->setSpacing(0);
foreach (const QString &item, items) {
Button *button;
QFont font("Nokia Sans");
font.setPixelSize(Resource::intValue("Calculator/Button.fontSize"));
if (operations.contains(item)) {
button = new Button(PixmapLoader::pixmap(":/bt_02_off.png"),
PixmapLoader::pixmap(":/bt_02_on.png"));
if (item == ".")
m_engine->connect(button, SIGNAL(clicked()), SLOT(pressDot()));
else if (item == "=")
m_engine->connect(button, SIGNAL(clicked()), SLOT(pressEqual()));
else
connectButton(&_operatorMapper, button, operations.indexOf(item));
} else if (item == "SUBMIT" || item == "CLEAR") {
button = new Button(PixmapLoader::pixmap(":/bt_03_off.png"),
PixmapLoader::pixmap(":/bt_03_on.png"));
if (item == "CLEAR")
m_engine->connect(button, SIGNAL(clicked()), SLOT(pressClearAll()));
else {
connect(button, SIGNAL(clicked()), SLOT(handleSubmit()));
//Submit also cleans the display
m_engine->connect(button, SIGNAL(clicked()), SLOT(pressClearAll()));
}
font.setPixelSize(Resource::intValue("Calculator/Action.fontSize"));
} else {
// digit
button = new Button(PixmapLoader::pixmap(":/bt_01_off.png"),
PixmapLoader::pixmap(":/bt_01_on.png"));
connectButton(&_digitMapper, button, item.toInt());
}
button->setText(item);
button->setFont(font);
layout->addItem(button);
}
return layout;
}
void CalculatorScreen::connectButton(QSignalMapper *mapper, QGraphicsLayoutItem *item,
int mapping)
{
QGraphicsWidget *widget = static_cast<QGraphicsWidget *>(item);
mapper->setMapping(widget, mapping);
mapper->connect(widget, SIGNAL(clicked()), SLOT(map()));
}
QRectF CalculatorScreen::flickableRect() const
{
int offset = _menu->y() + _menu->size().height();
return boundingRect().adjusted(0, offset, 0, 0);
}
void CalculatorScreen::handleDisplayChange(const QString &display)
{
setDisplayText(display);
}
void CalculatorScreen::handleSubmit()
{
const qreal value = m_engine->currentValue();
if (value > 0) {
const QString &category = optionSelected();
PData *db = qApp->property("settings").value<PData*>();
db->addValue(category, m_engine->currentValue());
}
}
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