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/*
* Copyright (c) 2010-2014 Kevin Smith
* Licensed under the GNU General Public License v3.
* See Documentation/Licenses/GPLv3.txt for more information.
*/
#include <Swift/QtUI/QtTextEdit.h>
#include <boost/tuple/tuple.hpp>
#include <boost/algorithm/string.hpp>
#include <boost/bind.hpp>
#include <QApplication>
#include <QFontMetrics>
#include <QKeyEvent>
#include <QDebug>
#include <QMenu>
#include <Swiften/Base/foreach.h>
#include <SwifTools/SpellCheckerFactory.h>
#include <SwifTools/SpellChecker.h>
#include <Swift/Controllers/SettingConstants.h>
#include <Swift/QtUI/QtSpellCheckerWindow.h>
#include <Swift/QtUI/QtSwiftUtil.h>
#include <Swift/QtUI/QtUtilities.h>
namespace Swift {
QtTextEdit::QtTextEdit(SettingsProvider* settings, QWidget* parent) : QTextEdit(parent), checker_(NULL), highlighter_(NULL) {
connect(this, SIGNAL(textChanged()), this, SLOT(handleTextChanged()));
settings_ = settings;
#ifdef HAVE_SPELLCHECKER
setUpSpellChecker();
#endif
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 if ((key == Qt::Key_K && modifiers == QtUtilities::ctrlHardwareKeyModifier)) {
QTextCursor cursor = textCursor();
cursor.setPosition(toPlainText().size(), QTextCursor::KeepAnchor);
cursor.removeSelectedText();
}
else {
QTextEdit::keyPressEvent(event);
}
}
void QtTextEdit::handleTextChanged() {
QSize previous(maximumSize());
setMaximumSize(QSize(maximumWidth(), sizeHint().height()));
if (previous != maximumSize()) {
updateGeometry();
}
}
void QtTextEdit::replaceMisspelledWord(const QString& word, int cursorPosition) {
QTextCursor cursor = textCursor();
PositionPair wordPosition = getWordFromCursor(cursorPosition);
cursor.setPosition(boost::get<0>(wordPosition), QTextCursor::MoveAnchor);
cursor.setPosition(boost::get<1>(wordPosition), QTextCursor::KeepAnchor);
QTextCharFormat normalFormat;
cursor.insertText(word, normalFormat);
}
PositionPair QtTextEdit::getWordFromCursor(int cursorPosition) {
PositionPairList misspelledPositions = highlighter_->getMisspelledPositions();
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());
#ifdef HAVE_SPELLCHECKER
QAction* insertPoint = menu->actions().first();
QAction* settingsAction = new QAction(tr("Spell Checker Options"), menu);
menu->insertAction(insertPoint, settingsAction);
menu->insertAction(insertPoint, menu->addSeparator());
addSuggestions(menu, event);
QAction* result = menu->exec(event->globalPos());
if (result == settingsAction) {
spellCheckerSettingsWindow();
}
for (std::vector<QAction*>::iterator it = replaceWordActions_.begin(); it != replaceWordActions_.end(); ++it) {
if (*it == result) {
replaceMisspelledWord((*it)->text(), cursor.position());
}
}
#else
menu->exec(event->globalPos());
#endif
delete menu;
}
void QtTextEdit::addSuggestions(QMenu* menu, QContextMenuEvent* event)
{
replaceWordActions_.clear();
QAction* insertPoint = menu->actions().first();
QTextCursor cursor = cursorForPosition(event->pos());
PositionPair wordPosition = getWordFromCursor(cursor.position());
if (boost::get<0>(wordPosition) < 0) {
// The click was executed outside a spellable word so no
// suggestions are necessary
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);
if (wordList.size() == 0) {
QAction* noSuggestions = new QAction(tr("No Suggestions"), 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());
}
#ifdef HAVE_SPELLCHECKER
void QtTextEdit::setUpSpellChecker()
{
delete checker_;
checker_ = NULL;
if (settings_->getSetting(SettingConstants::SPELL_CHECKER)) {
std::string dictPath = settings_->getSetting(SettingConstants::DICT_PATH);
std::string dictFile = settings_->getSetting(SettingConstants::DICT_FILE);
checker_ = SpellCheckerFactory().createSpellChecker(dictPath + dictFile);
delete highlighter_;
highlighter_ = NULL;
highlighter_ = new QtSpellCheckHighlighter(document(), checker_);
}
}
#endif
void QtTextEdit::spellCheckerSettingsWindow() {
if (!spellCheckerWindow_) {
spellCheckerWindow_ = new QtSpellCheckerWindow(settings_);
settings_->onSettingChanged.connect(boost::bind(&QtTextEdit::handleSettingChanged, this, _1));
spellCheckerWindow_->show();
}
else {
spellCheckerWindow_->show();
spellCheckerWindow_->raise();
spellCheckerWindow_->activateWindow();
}
}
void QtTextEdit::handleSettingChanged(const std::string& settings) {
if (settings == SettingConstants::SPELL_CHECKER.getKey()
|| settings == SettingConstants::DICT_PATH.getKey()
|| settings == SettingConstants::DICT_FILE.getKey()) {
#ifdef HAVE_SPELLCHECKER
setUpSpellChecker();
highlighter_->rehighlight();
#endif
}
}
}
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Swift