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/*
* Copyright (c) 2010 Kevin Smith
* Licensed under the GNU General Public License v3.
* See Documentation/Licenses/GPLv3.txt for more information.
*/
#include <SwifTools/SpellChecker.h>
#include <Swift/QtUI/QtTextEdit.h>
#include <Swift/QtUI/QtSwiftUtil.h>
#include <QFontMetrics>
#include <QKeyEvent>
#include <QDebug>
#include <QMenu>
namespace Swift {
QtTextEdit::QtTextEdit(QWidget* parent) : QTextEdit(parent){
connect(this, SIGNAL(textChanged()), this, SLOT(handleTextChanged()));
handleTextChanged();
checker_ = new SpellChecker();
};
QtTextEdit::~QtTextEdit() {
delete checker_;
}
void QtTextEdit::keyPressEvent(QKeyEvent* event) {
int key = event->key();
Qt::KeyboardModifiers modifiers = event->modifiers();
if ((key == Qt::Key_Enter || key == Qt::Key_Return)
&& (modifiers == Qt::NoModifier || modifiers == Qt::KeypadModifier)) {
emit returnPressed();
}
else if (((key == Qt::Key_PageUp || key == Qt::Key_PageDown) && modifiers == Qt::ShiftModifier)
|| (key == Qt::Key_C && modifiers == Qt::ControlModifier && textCursor().selectedText().isEmpty())
|| (key == Qt::Key_W && modifiers == Qt::ControlModifier)
|| (key == Qt::Key_PageUp && modifiers == Qt::ControlModifier)
|| (key == Qt::Key_PageDown && modifiers == Qt::ControlModifier)
|| (key == Qt::Key_Tab && modifiers == Qt::ControlModifier)
|| (key == Qt::Key_A && modifiers == Qt::AltModifier)
|| (key == Qt::Key_Tab)
) {
emit unhandledKeyPressEvent(event);
}
else if ((key == Qt::Key_Up)
|| (key == Qt::Key_Down)) {
emit unhandledKeyPressEvent(event);
QTextEdit::keyPressEvent(event);
}
else {
QTextEdit::keyPressEvent(event);
underlineMisspells();
}
}
void QtTextEdit::underlineMisspells() {
QTextCharFormat spellingErrorFormat;
QTextCharFormat normalFormat;
spellingErrorFormat.setUnderlineColor(QColor(Qt::red));
spellingErrorFormat.setUnderlineStyle(QTextCharFormat::SpellCheckUnderline);
QTextCursor cursor = textCursor();
QString word;
cursor.movePosition(QTextCursor::PreviousWord, QTextCursor::MoveAnchor, 1);
cursor.movePosition(QTextCursor::EndOfWord, QTextCursor::KeepAnchor, 1);
word = cursor.selectedText();
// Qt handles punctuation as words. Workaround that.
while (!word.isEmpty() && !word.at(0).isLetter()) {
cursor.movePosition(QTextCursor::PreviousWord, QTextCursor::MoveAnchor, 2);
cursor.movePosition(QTextCursor::EndOfWord, QTextCursor::KeepAnchor, 1);
word = cursor.selectedText();
}
if ((!word.isEmpty()) && !checker_->isCorrect(word.toStdString())) {
cursor.mergeCharFormat(spellingErrorFormat);
cursor.movePosition(QTextCursor::EndOfWord, QTextCursor::MoveAnchor, 1);
cursor.movePosition(QTextCursor::EndOfBlock, QTextCursor::KeepAnchor, 1);
cursor.setCharFormat(normalFormat);
}
}
void QtTextEdit::handleTextChanged() {
QSize previous(maximumSize());
setMaximumSize(QSize(maximumWidth(), sizeHint().height()));
if (previous != maximumSize()) {
updateGeometry();
}
}
void QtTextEdit::handleReplaceMisspellWord(const QString& word, const QPoint& position) {
QTextCursor cursor = cursorForPosition(position);
cursor.movePosition(QTextCursor::PreviousWord, QTextCursor::MoveAnchor, 1);
cursor.movePosition(QTextCursor::EndOfWord, QTextCursor::KeepAnchor, 1);
QTextCharFormat normalFormat;
cursor.insertText(word, normalFormat);
}
QSize QtTextEdit::sizeHint() const {
QFontMetrics inputMetrics(currentFont());
QRect horizontalBounds = contentsRect().adjusted(0,0,0,9999);
QRect boundingRect = inputMetrics.boundingRect(horizontalBounds, Qt::TextWordWrap, toPlainText() + "A");
int left, top, right, bottom;
getContentsMargins(&left, &top, &right, &bottom);
int height = boundingRect.height() + top + bottom + inputMetrics.height();
return QSize(width(), height);
//int numberOfLines = 1;
//int lineHeight = inputMetrics.lineSpacing();
//return QSize(QTextEdit::sizeHint().width(), lineHeight * numberOfLines);
}
void QtTextEdit::contextMenuEvent(QContextMenuEvent* event) {
QTextCursor cursor = cursorForPosition(event->pos());
cursor.movePosition(QTextCursor::PreviousWord, QTextCursor::MoveAnchor, 1);
cursor.movePosition(QTextCursor::EndOfWord, QTextCursor::KeepAnchor, 1);
std::vector<std::string> wordList;
checker_->getSuggestions(Q2PSTRING(cursor.selectedText()), wordList);
std::vector<QAction*> replaceWordActions;
QMenu *menu = createStandardContextMenu();
for (std::vector<std::string>::iterator it = wordList.begin(); it != wordList.end(); ++it) {
replaceWordActions.push_back(menu->addAction(tr(it->c_str())));
}
QAction* result = menu->exec(event->globalPos());
for (std::vector<QAction*>::iterator it = replaceWordActions.begin(); it != replaceWordActions.end(); ++it) {
if (*it == result) {
handleReplaceMisspellWord((*it)->text(), event->pos());
}
}
delete menu;
}
}
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Swift