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#include "unicodeinsertion.h"
QString unicodePointToString(unsigned int u)
{
// if (u < 0x10000) return QChar(u);
// else //return QString(QChar(QChar::highSurrogate(u))) + QChar(QChar::lowSurrogate(u));
return QString::fromUcs4(&u, 1);
}
QString unicodePointToUtf8Hex(unsigned int u)
{
return unicodePointToString(u).toUtf8().toHex();
}
QLineEditWithMetaText::QLineEditWithMetaText(QWidget *parent): QLineEdit(parent)
{
}
void QLineEditWithMetaText::setMetaText(const QString &s)
{
metaText = s;
update();
}
void QLineEditWithMetaText::paintEvent ( QPaintEvent *ev)
{
QLineEdit::paintEvent(ev);
if (metaText.isEmpty()) return;
QPainter p(this);
QFontMetrics fm(font());
p.setPen(QApplication::palette().windowText().color().lighter(50));
p.drawText(width() - fm.width(metaText) - 5, (height() + fm.height()) / 2 - 2, metaText);
}
UnicodeInsertion::UnicodeInsertion(QWidget *parent, int defCharCode): QWidget(parent), defaultCharCode(defCharCode)
{
QLayout *lay = new QVBoxLayout();
edit = new QLineEditWithMetaText(this);
table = new QTableWidget(this);
QFontMetrics fm(QApplication::font());
int bw = (fm.maxWidth() + 1);
int bh = qMax(fm.height(), fm.lineSpacing()) + 1;
int bw_average=fm.averageCharWidth();
table->setMinimumWidth(16 * bw);
table->setMinimumHeight(3 * bh);
table->setRowCount(3);
table->setColumnCount(16);
for (int i = 0; i < table->rowCount(); i++)
table->setRowHeight(i, bh);;
for (int i = 0; i < table->columnCount(); i++)
table->setColumnWidth(i, bw);;
table->horizontalHeader()->hide();
table->verticalHeader()->hide();
table->resizeRowsToContents();
table->resizeColumnsToContents();
table->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
table->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
connect(table, SIGNAL(cellClicked(int, int)), SLOT(tableCellClicked(int, int)));
connect(table, SIGNAL(cellDoubleClicked(int, int)), SLOT(tableCellDoubleClicked(int, int)));
lay->addWidget(edit);
lay->addWidget(table);
int widgetWidth=qMax(19*bw,44*bw_average);
resize(widgetWidth, 5 * bh + 2 * edit->height());
this->setLayout(lay);
setFocusProxy(edit);
connect(edit, SIGNAL(textChanged(QString)), SLOT(editChanged(QString)));
setAttribute(Qt::WA_DeleteOnClose, true);
if (defaultCharCode == 0) edit->setText("0x");
else edit->setText(QString("0x%1").arg(defaultCharCode, 0, 16));
}
void UnicodeInsertion::setTableText(int r, int c, const QString &s)
{
if (!table->item(r, c)) table->setItem(r, c, new QTableWidgetItem(s));
else table->item(r, c)->setText(s);
}
void UnicodeInsertion::keyPressEvent(QKeyEvent *k)
{
if (k->key() == Qt::Key_Enter || k->key() == Qt::Key_Return) {
if (table->item(0, 8) && table->item(0, 8)->text() != "" &&
table->item(0, 8)->text() != unicodePointToString(defaultCharCode))
emit insertCharacter(table->item(0, 8)->text());
close();
}
if (k->key() == Qt::Key_Escape) close();
}
void UnicodeInsertion::editChanged(const QString &newText)
{
QString nt = newText.trimmed();
if (nt.startsWith('\'')) {
if (nt.length() < 2) return;
unsigned int unicode = nt.at(1).unicode();
if (nt.at(1).isHighSurrogate()) {
if (nt.length() < 3) return;
unicode = (((unicode & 0x3FF) << 10) | (nt.at(2).unicode() & 0x3FF)) + 0x10000;
}
edit->setText("0x" + QString::number(unicode, 16));
return;
}
int base = 16;
if (nt.startsWith("0x", Qt::CaseInsensitive)) nt.remove(0, 2);
else if (nt.startsWith("x", Qt::CaseInsensitive)) nt.remove(0, 1);
else base = 10;
unsigned int c = QString(nt).toUInt(0, base);
QString utf8 = c <= 0x7f ? "" : QString(", utf-8: %1").arg(unicodePointToUtf8Hex(c));
if (base == 16) edit->setMetaText(QString("%1 (cp: %2%3)").arg(unicodePointToString(c)).arg(c).arg(utf8));
else edit->setMetaText(QString("%1 (cp: 0x%2%3)").arg(unicodePointToString(c)).arg(c, 0, 16).arg(utf8));
setTableText(0, 8, unicodePointToString(c));
for (int i = 0; i < base; i++)
setTableText(2, i, unicodePointToString(c * base + i));
if (nt.length() < 2)
table->resizeRowsToContents();
//table->resizeColumnsToContents();
//for (int i=0;i<16;i++)
}
void UnicodeInsertion::tableCellClicked(int r, int c)
{
if (r != 2) return;
QChar cc = c >= 10 ? QChar('A' + c - 10) : QChar('0' + c);
edit->setText(edit->text() + cc);
edit->setFocus();
}
void UnicodeInsertion::tableCellDoubleClicked(int r, int c)
{
if (r != 2 || !table->item(r, c)) return;
insertCharacter(table->item(0, 8)->text()); //tricky, double click is reported as single click - double click and the single click sets the edit box (4.6.3 on debian)
close();
}
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