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#include <QtGui>

#include "characterwidget.h"

#include "mainwindow.h"

//! [0]

MainWindow::MainWindow()

{

    QWidget *centralWidget = new QWidget;

    QLabel *fontLabel = new QLabel(tr("Font:"));

    fontCombo = new QFontComboBox;

    QLabel *sizeLabel = new QLabel(tr("Size:"));

    sizeCombo = new QComboBox;

    QLabel *styleLabel = new QLabel(tr("Style:"));

    styleCombo = new QComboBox;

    QLabel *fontMergingLabel = new QLabel(tr("Automatic Font Merging:"));

    fontMerging = new QCheckBox;

    fontMerging->setChecked(true);

    scrollArea = new QScrollArea;

    characterWidget = new CharacterWidget;

    scrollArea->setWidget(characterWidget);

//! [0]

//! [1]

    findStyles(fontCombo->currentFont());

//! [1]

    findSizes(fontCombo->currentFont());

//! [2]

    lineEdit = new QLineEdit;

    QPushButton *clipboardButton = new QPushButton(tr("&To clipboard"));

//! [2]

//! [3]

    clipboard = QApplication::clipboard();

//! [3]

//! [4]

    connect(fontCombo, SIGNAL(currentFontChanged(QFont)),

            this, SLOT(findStyles(QFont)));

    connect(fontCombo, SIGNAL(currentFontChanged(QFont)),

            this, SLOT(findSizes(QFont)));

    connect(fontCombo, SIGNAL(currentFontChanged(QFont)),

            characterWidget, SLOT(updateFont(QFont)));

    connect(sizeCombo, SIGNAL(currentIndexChanged(QString)),

            characterWidget, SLOT(updateSize(QString)));

    connect(styleCombo, SIGNAL(currentIndexChanged(QString)),

            characterWidget, SLOT(updateStyle(QString)));

//! [4] //! [5]

    connect(characterWidget, SIGNAL(characterSelected(QString)),

            this, SLOT(insertCharacter(QString)));

    connect(clipboardButton, SIGNAL(clicked()), this, SLOT(updateClipboard()));

//! [5]

    connect(fontMerging, SIGNAL(toggled(bool)), characterWidget, SLOT(updateFontMerging(bool)));

//! [6]

    QHBoxLayout *controlsLayout = new QHBoxLayout;

    controlsLayout->addWidget(fontLabel);

    controlsLayout->addWidget(fontCombo, 1);

    controlsLayout->addWidget(sizeLabel);

    controlsLayout->addWidget(sizeCombo, 1);

    controlsLayout->addWidget(styleLabel);

    controlsLayout->addWidget(styleCombo, 1);

    controlsLayout->addWidget(fontMergingLabel);

    controlsLayout->addWidget(fontMerging, 1);

    controlsLayout->addStretch(1);

    QHBoxLayout *lineLayout = new QHBoxLayout;

    lineLayout->addWidget(lineEdit, 1);

    lineLayout->addSpacing(12);

    lineLayout->addWidget(clipboardButton);

    QVBoxLayout *centralLayout = new QVBoxLayout;

    centralLayout->addLayout(controlsLayout);

    centralLayout->addWidget(scrollArea, 1);

    centralLayout->addSpacing(4);

    centralLayout->addLayout(lineLayout);

    centralWidget->setLayout(centralLayout);

    setCentralWidget(centralWidget);

    setWindowTitle(tr("Character Map"));

}

//! [6]

//! [7]

void MainWindow::findStyles(const QFont &font)

{

    QFontDatabase fontDatabase;

    QString currentItem = styleCombo->currentText();

    styleCombo->clear();

//! [7]

//! [8]

    QString style;

    foreach (style, fontDatabase.styles(font.family()))

        styleCombo->addItem(style);

    int styleIndex = styleCombo->findText(currentItem);

    if (styleIndex == -1)

        styleCombo->setCurrentIndex(0);

    else

        styleCombo->setCurrentIndex(styleIndex);

}

//! [8]

void MainWindow::findSizes(const QFont &font)

{

    QFontDatabase fontDatabase;

    QString currentSize = sizeCombo->currentText();

    sizeCombo->blockSignals(true);

    sizeCombo->clear();

    int size;

    if(fontDatabase.isSmoothlyScalable(font.family(), fontDatabase.styleString(font))) {

        foreach(size, QFontDatabase::standardSizes()) {

            sizeCombo->addItem(QVariant(size).toString());

            sizeCombo->setEditable(true);

        }

    } else {

        foreach(size, fontDatabase.smoothSizes(font.family(), fontDatabase.styleString(font))) {

            sizeCombo->addItem(QVariant(size).toString());

            sizeCombo->setEditable(false);

        }

    }

    sizeCombo->blockSignals(false);

    int sizeIndex = sizeCombo->findText(currentSize);

    if(sizeIndex == -1)

        sizeCombo->setCurrentIndex(qMax(0, sizeCombo->count() / 3));

    else

        sizeCombo->setCurrentIndex(sizeIndex);

}

//! [9]

void MainWindow::insertCharacter(const QString &character)

{

    lineEdit->insert(character);

}

//! [9]

//! [10]

void MainWindow::updateClipboard()

{

//! [11]

    clipboard->setText(lineEdit->text(), QClipboard::Clipboard);

//! [11]

    clipboard->setText(lineEdit->text(), QClipboard::Selection);

}

//! [10]