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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 <boost/tuple/tuple.hpp>
#include <boost/algorithm/string.hpp>
#include <SwifTools/SpellCheckerFactory.h>
#include <SwifTools/SpellChecker.h>
#include <Swift/QtUI/QtTextEdit.h>
#include <Swift/QtUI/QtSwiftUtil.h>
#include <Swift/QtUI/QtSpellCheckerWindow.h>
#include <QApplication>
#include <QFontMetrics>
#include <QKeyEvent>
#include <QDebug>
#include <QMenu>
namespace Swift {
QtTextEdit::QtTextEdit(SettingsProvider* settings, QWidget* parent) : QTextEdit(parent) {
connect(this, SIGNAL(textChanged()), this, SLOT(handleTextChanged()));
settings_ = settings;
setUpSpellChecker();
handleTextChanged();
};
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);
if(settings_->getSetting(SettingConstants::SPELL_CHECKER)) {
underlineMisspells();
}
}
}
void QtTextEdit::underlineMisspells() {
if (checker_ == NULL) {
// Try to setUp the checker again in case that
// settings changed.
setUpSpellChecker();
if (checker_ == NULL) {
return;
}
}
misspelledPositions_.clear();
QTextCharFormat spellingErrorFormat;
QTextCharFormat normalFormat;
spellingErrorFormat.setUnderlineColor(QColor(Qt::red));
spellingErrorFormat.setUnderlineStyle(QTextCharFormat::SpellCheckUnderline);
QTextCursor cursor = textCursor();
cursor.movePosition(QTextCursor::Start, QTextCursor::MoveAnchor, 1);
cursor.movePosition(QTextCursor::End, QTextCursor::KeepAnchor, 1);
cursor.setCharFormat(normalFormat);
std::string fragment = Q2PSTRING(cursor.selectedText());
checker_->checkFragment(fragment, misspelledPositions_);
for (PositionPairList::iterator it = misspelledPositions_.begin(); it != misspelledPositions_.end(); ++it) {
if (textCursor().position() > boost::get<1>(*it)) {
cursor.setPosition(boost::get<0>(*it), QTextCursor::MoveAnchor);
cursor.setPosition(boost::get<1>(*it), QTextCursor::KeepAnchor);
cursor.setCharFormat(spellingErrorFormat);
cursor.clearSelection();
}
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 boost::tuple<int, int>& wordPosition) {
QTextCursor cursor = textCursor();
cursor.setPosition(boost::get<0>(wordPosition), QTextCursor::MoveAnchor);
cursor.setPosition(boost::get<1>(wordPosition), QTextCursor::KeepAnchor);
QTextCharFormat normalFormat;
cursor.insertText(word, normalFormat);
}
boost::tuple<int, int> QtTextEdit::getWordFromCursor(int cursorPosition) {
for (PositionPairList::iterator it = misspelledPositions_.begin(); it != misspelledPositions_.end(); ++it) {
if (cursorPosition >= boost::get<0>(*it) && cursorPosition <= boost::get<1>(*it)) {
return *it;
}
}
return boost::make_tuple(-1,-1);
}
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) {
QMenu *menu = createStandardContextMenu();
QTextCursor cursor = cursorForPosition(event->pos());
boost::tuple<int, int> wordPosition = getWordFromCursor(cursor.position());
if (boost::get<0>(wordPosition) < 0) {
// The click was executed outside a spellable word so no
// suggestion menu is necessary
menu->exec(event->globalPos());
delete menu;
return;
}
cursor.setPosition(boost::get<0>(wordPosition), QTextCursor::MoveAnchor);
cursor.setPosition(boost::get<1>(wordPosition), QTextCursor::KeepAnchor);
std::vector<std::string> wordList;
checker_->getSuggestions(Q2PSTRING(cursor.selectedText()), wordList);
std::vector<QAction*> replaceWordActions;
QAction *insertPoint = menu->actions().first();
if (wordList.size() == 0) {
QAction *noSuggestions = new QAction(QApplication::translate("QtTextEdit", "No Suggestions", 0, QApplication::UnicodeUTF8), menu);
noSuggestions->setDisabled(true);
menu->insertAction(insertPoint, noSuggestions);
} else {
for (std::vector<std::string>::iterator it = wordList.begin(); it != wordList.end(); ++it) {
QAction *wordAction = new QAction(it->c_str(), menu);
menu->insertAction(insertPoint, wordAction);
replaceWordActions.push_back(wordAction);
}
}
menu->insertAction(insertPoint, menu->addSeparator());
QAction* result = menu->exec(event->globalPos());
for (std::vector<QAction*>::iterator it = replaceWordActions.begin(); it != replaceWordActions.end(); ++it) {
if (*it == result) {
handleReplaceMisspellWord((*it)->text(), wordPosition);
}
}
delete menu;
}
void QtTextEdit::setUpSpellChecker()
{
SpellCheckerFactory *checkerFactory = new SpellCheckerFactory();
std::string dictFile = settings_->getSetting(SettingConstants::DICT_FILE);
if (dictFile.empty()) {
// Disable the dictionary to force the user to select a dictionary
settings_->storeSetting(SettingConstants::SPELL_CHECKER, false);
}
if (settings_->getSetting(SettingConstants::SPELL_CHECKER)) {
std::string dictPath = settings_->getSetting(SettingConstants::DICT_PATH);
std::string affixFile(dictFile);
boost::replace_all(affixFile, ".dic", ".aff");
if (checker_ != NULL) {
delete checker_;
}
checker_ = checkerFactory->createSpellChecker((dictPath + affixFile).c_str(), (dictPath + dictFile).c_str());
delete checkerFactory;
} else {
checker_ = NULL;
}
}
}
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Swift