mainwindow.cpp Example File

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#include <QtGui>
#include "characterwidget.h"
#include "mainwindow.h"
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);
    findStyles(fontCombo->currentFont());
    findSizes(fontCombo->currentFont());
    lineEdit = new QLineEdit;
    QPushButton *clipboardButton = new QPushButton(tr("&To clipboard"));
    clipboard = QApplication::clipboard();
    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)));
    connect(characterWidget, SIGNAL(characterSelected(QString)),
            this, SLOT(insertCharacter(QString)));
    connect(clipboardButton, SIGNAL(clicked()), this, SLOT(updateClipboard()));
    connect(fontMerging, SIGNAL(toggled(bool)), characterWidget, SLOT(updateFontMerging(bool)));
    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"));
}
void MainWindow::findStyles(const QFont &font)
{
    QFontDatabase fontDatabase;
    QString currentItem = styleCombo->currentText();
    styleCombo->clear();
    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);
}
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);
}
void MainWindow::insertCharacter(const QString &character)
{
    lineEdit->insert(character);
}
void MainWindow::updateClipboard()
{
    clipboard->setText(lineEdit->text(), QClipboard::Clipboard);
    clipboard->setText(lineEdit->text(), QClipboard::Selection);
}