/quassel-0.7.3/src/uisupport/multilineedit.cpp
C++ | 721 lines | 602 code | 88 blank | 31 comment | 130 complexity | 326ae5bb506fbf7acf813eed4cd0850b MD5 | raw file
Possible License(s): GPL-2.0, GPL-3.0
- /***************************************************************************
- * Copyright (C) 2005-2010 by the Quassel Project *
- * devel@quassel-irc.org *
- * *
- * This program is free software; you can redistribute it and/or modify *
- * it under the terms of the GNU General Public License as published by *
- * the Free Software Foundation; either version 2 of the License, or *
- * (at your option) version 3. *
- * *
- * This program is distributed in the hope that it will be useful, *
- * but WITHOUT ANY WARRANTY; without even the implied warranty of *
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
- * GNU General Public License for more details. *
- * *
- * You should have received a copy of the GNU General Public License *
- * along with this program; if not, write to the *
- * Free Software Foundation, Inc., *
- * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
- ***************************************************************************/
- #include <QApplication>
- #include <QMenu>
- #include <QMessageBox>
- #include <QScrollBar>
- #include "actioncollection.h"
- #include "bufferview.h"
- #include "graphicalui.h"
- #include "multilineedit.h"
- #include "tabcompleter.h"
- const int leftMargin = 3;
- MultiLineEdit::MultiLineEdit(QWidget *parent)
- : MultiLineEditParent(parent),
- _idx(0),
- _mode(SingleLine),
- _singleLine(true),
- _minHeight(1),
- _maxHeight(5),
- _scrollBarsEnabled(true),
- _pasteProtectionEnabled(true),
- _emacsMode(false),
- _lastDocumentHeight(-1)
- {
- #if QT_VERSION >= 0x040500
- document()->setDocumentMargin(0); // new in Qt 4.5 and we really don't want it here
- #endif
- setAcceptRichText(false);
- #ifdef HAVE_KDE
- enableFindReplace(false);
- #endif
- setMode(SingleLine);
- setWordWrapEnabled(false);
- reset();
- connect(this, SIGNAL(textChanged()), this, SLOT(on_textChanged()));
- _mircColorMap["00"] = "#ffffff";
- _mircColorMap["01"] = "#000000";
- _mircColorMap["02"] = "#000080";
- _mircColorMap["03"] = "#008000";
- _mircColorMap["04"] = "#ff0000";
- _mircColorMap["05"] = "#800000";
- _mircColorMap["06"] = "#800080";
- _mircColorMap["07"] = "#ffa500";
- _mircColorMap["08"] = "#ffff00";
- _mircColorMap["09"] = "#00ff00";
- _mircColorMap["10"] = "#008080";
- _mircColorMap["11"] = "#00ffff";
- _mircColorMap["12"] = "#4169e1";
- _mircColorMap["13"] = "#ff00ff";
- _mircColorMap["14"] = "#808080";
- _mircColorMap["15"] = "#c0c0c0";
- }
- MultiLineEdit::~MultiLineEdit() {
- }
- void MultiLineEdit::setCustomFont(const QFont &font) {
- setFont(font);
- updateSizeHint();
- }
- void MultiLineEdit::setMode(Mode mode) {
- if(mode == _mode)
- return;
- _mode = mode;
- }
- void MultiLineEdit::setMinHeight(int lines) {
- if(lines == _minHeight)
- return;
- _minHeight = lines;
- updateSizeHint();
- }
- void MultiLineEdit::setMaxHeight(int lines) {
- if(lines == _maxHeight)
- return;
- _maxHeight = lines;
- updateSizeHint();
- }
- void MultiLineEdit::setScrollBarsEnabled(bool enable) {
- if(_scrollBarsEnabled == enable)
- return;
- _scrollBarsEnabled = enable;
- updateScrollBars();
- }
- void MultiLineEdit::updateScrollBars() {
- QFontMetrics fm(font());
- int _maxPixelHeight = fm.lineSpacing() * _maxHeight;
- if(_scrollBarsEnabled && document()->size().height() > _maxPixelHeight)
- setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
- else
- setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
- if(!_scrollBarsEnabled || isSingleLine())
- setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
- else
- setHorizontalScrollBarPolicy(Qt::ScrollBarAsNeeded);
- }
- void MultiLineEdit::resizeEvent(QResizeEvent *event) {
- QTextEdit::resizeEvent(event);
- updateSizeHint();
- updateScrollBars();
- }
- void MultiLineEdit::updateSizeHint() {
- QFontMetrics fm(font());
- int minPixelHeight = fm.lineSpacing() * _minHeight;
- int maxPixelHeight = fm.lineSpacing() * _maxHeight;
- int scrollBarHeight = horizontalScrollBar()->isVisible() ? horizontalScrollBar()->height() : 0;
- // use the style to determine a decent size
- int h = qMin(qMax((int)document()->size().height() + scrollBarHeight, minPixelHeight), maxPixelHeight) + 2 * frameWidth();
- QStyleOptionFrameV2 opt;
- opt.initFrom(this);
- opt.rect = QRect(0, 0, 100, h);
- opt.lineWidth = lineWidth();
- opt.midLineWidth = midLineWidth();
- opt.state |= QStyle::State_Sunken;
- QSize s = style()->sizeFromContents(QStyle::CT_LineEdit, &opt, QSize(100, h).expandedTo(QApplication::globalStrut()), this);
- if(s != _sizeHint) {
- _sizeHint = s;
- updateGeometry();
- }
- }
- QSize MultiLineEdit::sizeHint() const {
- if(!_sizeHint.isValid()) {
- MultiLineEdit *that = const_cast<MultiLineEdit *>(this);
- that->updateSizeHint();
- }
- return _sizeHint;
- }
- QSize MultiLineEdit::minimumSizeHint() const {
- return sizeHint();
- }
- void MultiLineEdit::setEmacsMode(bool enable) {
- _emacsMode = enable;
- }
- void MultiLineEdit::setSpellCheckEnabled(bool enable) {
- #ifdef HAVE_KDE
- setCheckSpellingEnabled(enable);
- #else
- Q_UNUSED(enable)
- #endif
- }
- void MultiLineEdit::setWordWrapEnabled(bool enable) {
- setLineWrapMode(enable? WidgetWidth : NoWrap);
- updateSizeHint();
- }
- void MultiLineEdit::setPasteProtectionEnabled(bool enable, QWidget *) {
- _pasteProtectionEnabled = enable;
- }
- void MultiLineEdit::historyMoveBack() {
- addToHistory(convertRichtextToMircCodes(), true);
- if(_idx > 0) {
- _idx--;
- showHistoryEntry();
- }
- }
- void MultiLineEdit::historyMoveForward() {
- addToHistory(convertRichtextToMircCodes(), true);
- if(_idx < _history.count()) {
- _idx++;
- if(_idx < _history.count() || _tempHistory.contains(_idx)) // tempHistory might have an entry for idx == history.count() + 1
- showHistoryEntry();
- else
- reset(); // equals clear() in this case
- } else {
- addToHistory(convertRichtextToMircCodes());
- reset();
- }
- }
- bool MultiLineEdit::addToHistory(const QString &text, bool temporary) {
- if(text.isEmpty())
- return false;
- Q_ASSERT(0 <= _idx && _idx <= _history.count());
- if(temporary) {
- // if an entry of the history is changed, we remember it and show it again at this
- // position until a line was actually sent
- // sent lines get appended to the history
- if(_history.isEmpty() || text != _history[_idx - (int)(_idx == _history.count())]) {
- _tempHistory[_idx] = text;
- return true;
- }
- } else {
- if(_history.isEmpty() || text != _history.last()) {
- _history << text;
- _tempHistory.clear();
- return true;
- }
- }
- return false;
- }
- bool MultiLineEdit::event(QEvent *e) {
- // We need to make sure that global shortcuts aren't eaten
- if(e->type() == QEvent::ShortcutOverride) {
- QKeyEvent* event = static_cast<QKeyEvent *>(e);
- QKeySequence key = QKeySequence(event->key() | event->modifiers());
- foreach(QAction *action, GraphicalUi::actionCollection()->actions()) {
- if(action->shortcuts().contains(key)) {
- e->ignore();
- return false;
- }
- }
- }
- return MultiLineEditParent::event(e);
- }
- void MultiLineEdit::keyPressEvent(QKeyEvent *event) {
- // Workaround the fact that Qt < 4.5 doesn't know InsertLineSeparator yet
- #if QT_VERSION >= 0x040500
- if(event == QKeySequence::InsertLineSeparator) {
- #else
- # ifdef Q_WS_MAC
- if((event->key() == Qt::Key_Return || event->key() == Qt::Key_Enter) && event->modifiers() & Qt::META) {
- # else
- if((event->key() == Qt::Key_Return || event->key() == Qt::Key_Enter) && event->modifiers() & Qt::SHIFT) {
- # endif
- #endif
- if(_mode == SingleLine) {
- event->accept();
- on_returnPressed();
- return;
- }
- MultiLineEditParent::keyPressEvent(event);
- return;
- }
- switch(event->key()) {
- case Qt::Key_Up:
- if(event->modifiers() & Qt::ShiftModifier)
- break;
- {
- event->accept();
- if(!(event->modifiers() & Qt::ControlModifier)) {
- int pos = textCursor().position();
- moveCursor(QTextCursor::Up);
- if(pos == textCursor().position()) // already on top line -> history
- historyMoveBack();
- } else
- historyMoveBack();
- return;
- }
- case Qt::Key_Down:
- if(event->modifiers() & Qt::ShiftModifier)
- break;
- {
- event->accept();
- if(!(event->modifiers() & Qt::ControlModifier)) {
- int pos = textCursor().position();
- moveCursor(QTextCursor::Down);
- if(pos == textCursor().position()) // already on bottom line -> history
- historyMoveForward();
- } else
- historyMoveForward();
- return;
- }
- case Qt::Key_Return:
- case Qt::Key_Enter:
- case Qt::Key_Select:
- event->accept();
- on_returnPressed();
- return;
- // We don't want to have the tab key react even if no completer is installed
- case Qt::Key_Tab:
- event->accept();
- return;
- default:
- ;
- }
- if(_emacsMode) {
- if(event->modifiers() & Qt::ControlModifier) {
- switch(event->key()) {
- // move
- case Qt::Key_A:
- moveCursor(QTextCursor::StartOfLine);
- return;
- case Qt::Key_E:
- moveCursor(QTextCursor::EndOfLine);
- return;
- case Qt::Key_F:
- moveCursor(QTextCursor::Right);
- return;
- case Qt::Key_B:
- moveCursor(QTextCursor::Left);
- return;
- // modify
- case Qt::Key_Y:
- paste();
- return;
- case Qt::Key_K:
- moveCursor(QTextCursor::EndOfLine, QTextCursor::KeepAnchor);
- cut();
- return;
- default:
- break;
- }
- }
- else if(event->modifiers() & Qt::MetaModifier ||
- event->modifiers() & Qt::AltModifier)
- {
- switch(event->key()) {
- case Qt::Key_Right:
- moveCursor(QTextCursor::WordRight);
- return;
- case Qt::Key_Left:
- moveCursor(QTextCursor::WordLeft);
- return;
- case Qt::Key_F:
- moveCursor(QTextCursor::WordRight);
- return;
- case Qt::Key_B:
- moveCursor(QTextCursor::WordLeft);
- return;
- case Qt::Key_Less:
- moveCursor(QTextCursor::Start);
- return;
- case Qt::Key_Greater:
- moveCursor(QTextCursor::End);
- return;
- // modify
- case Qt::Key_D:
- moveCursor(QTextCursor::WordRight, QTextCursor::KeepAnchor);
- cut();
- return;
- case Qt::Key_U: // uppercase word
- moveCursor(QTextCursor::WordRight, QTextCursor::KeepAnchor);
- textCursor().insertText(textCursor().selectedText().toUpper());
- return;
- case Qt::Key_L: // lowercase word
- moveCursor(QTextCursor::WordRight, QTextCursor::KeepAnchor);
- textCursor().insertText(textCursor().selectedText().toLower());
- return;
- case Qt::Key_C: { // capitalize word
- moveCursor(QTextCursor::WordRight, QTextCursor::KeepAnchor);
- QString const text = textCursor().selectedText();
- textCursor().insertText(text.left(1).toUpper() + text.mid(1).toLower());
- return;
- }
- case Qt::Key_T: { // transpose words
- moveCursor(QTextCursor::StartOfWord);
- moveCursor(QTextCursor::EndOfWord, QTextCursor::KeepAnchor);
- QString const word1 = textCursor().selectedText();
- textCursor().clearSelection();
- moveCursor(QTextCursor::WordRight);
- moveCursor(QTextCursor::EndOfWord, QTextCursor::KeepAnchor);
- QString const word2 = textCursor().selectedText();
- if(!word2.isEmpty() && !word1.isEmpty()) {
- textCursor().insertText(word1);
- moveCursor(QTextCursor::WordLeft);
- moveCursor(QTextCursor::WordLeft);
- moveCursor(QTextCursor::EndOfWord, QTextCursor::KeepAnchor);
- textCursor().insertText(word2);
- moveCursor(QTextCursor::WordRight);
- moveCursor(QTextCursor::EndOfWord);
- }
- return;
- }
- default:
- break;
- }
- }
- }
- #ifdef HAVE_KDE
- KTextEdit::keyPressEvent(event);
- #else
- QTextEdit::keyPressEvent(event);
- #endif
- }
- QString MultiLineEdit::convertRichtextToMircCodes() {
- bool underline, bold, italic, color;
- QString mircText, mircFgColor, mircBgColor;
- QTextCursor cursor = textCursor();
- QTextCursor peekcursor = textCursor();
- cursor.movePosition(QTextCursor::Start);
- underline = bold = italic = color = false;
- while (cursor.movePosition(QTextCursor::NextCharacter, QTextCursor::KeepAnchor)) {
- if (cursor.selectedText() == QString(QChar(QChar::LineSeparator))
- || cursor.selectedText() == QString(QChar(QChar::ParagraphSeparator))) {
- if (color) {
- color = false;
- mircText.append('\x03');
- }
- if (underline) {
- underline = false;
- mircText.append('\x1f');
- }
- if (italic) {
- italic = false;
- mircText.append('\x1d');
- }
- if (bold) {
- bold = false;
- mircText.append('\x02');
- }
- mircText.append('\n');
- }
- else {
- if (!bold && cursor.charFormat().font().bold()) {
- bold = true;
- mircText.append('\x02');
- }
- if (!italic && cursor.charFormat().fontItalic()) {
- italic = true;
- mircText.append('\x1d');
- }
- if (!underline && cursor.charFormat().fontUnderline()) {
- underline = true;
- mircText.append('\x1f');
- }
- if (!color && (cursor.charFormat().foreground().isOpaque() || cursor.charFormat().background().isOpaque())) {
- color = true;
- mircText.append('\x03');
- mircFgColor = _mircColorMap.key(cursor.charFormat().foreground().color().name());
- mircBgColor = _mircColorMap.key(cursor.charFormat().background().color().name());
- if (mircFgColor.isEmpty()) {
- mircFgColor = "01"; //use black if the current foreground color can't be converted
- }
- mircText.append(mircFgColor);
- if (cursor.charFormat().background().isOpaque())
- mircText.append("," + mircBgColor);
- }
- mircText.append(cursor.selectedText());
- peekcursor.setPosition(cursor.position());
- peekcursor.movePosition(QTextCursor::NextCharacter, QTextCursor::KeepAnchor);
- if (mircCodesChanged(cursor, peekcursor)) {
- if (color) {
- color = false;
- mircText.append('\x03');
- }
- if (underline) {
- underline = false;
- mircText.append('\x1f');
- }
- if (italic) {
- italic = false;
- mircText.append('\x1d');
- }
- if (bold) {
- bold = false;
- mircText.append('\x02');
- }
- }
- }
- cursor.clearSelection();
- }
- if (color) {
- color = false;
- mircText.append('\x03');
- }
- if (underline) {
- underline = false;
- mircText.append('\x1f');
- }
- if (italic) {
- italic = false;
- mircText.append('\x1d');
- }
- if (bold) {
- bold = false;
- mircText.append('\x02');
- }
- return mircText;
- }
- bool MultiLineEdit::mircCodesChanged(QTextCursor &cursor, QTextCursor &peekcursor) {
- bool changed = false;
- if (cursor.charFormat().font().bold() != peekcursor.charFormat().font().bold())
- changed = true;
- if (cursor.charFormat().fontItalic() != peekcursor.charFormat().fontItalic())
- changed = true;
- if (cursor.charFormat().fontUnderline() != peekcursor.charFormat().fontUnderline())
- changed = true;
- if (cursor.charFormat().foreground().color() != peekcursor.charFormat().foreground().color())
- changed = true;
- if (cursor.charFormat().background().color() != peekcursor.charFormat().background().color())
- changed = true;
- return changed;
- }
- QString MultiLineEdit::convertMircCodesToHtml(const QString &text) {
- QStringList words;
- QRegExp mircCode = QRegExp("(|||)", Qt::CaseSensitive);
- int posLeft = 0;
- int posRight = 0;
- for(;;) {
- posRight = mircCode.indexIn(text, posLeft);
- if(posRight < 0) {
- words << text.mid(posLeft);
- break; // no more mirc color codes
- }
- if (posLeft < posRight) {
- words << text.mid(posLeft, posRight - posLeft);
- posLeft = posRight;
- }
- posRight = text.indexOf(mircCode.cap(), posRight + 1);
- words << text.mid(posLeft, posRight + 1 - posLeft);
- posLeft = posRight + 1;
- }
- for (int i = 0; i < words.count(); i++) {
- QString style;
- if (words[i].contains('\x02')) {
- style.append(" font-weight:600;");
- words[i].replace('\x02',"");
- }
- if (words[i].contains('\x1d')) {
- style.append(" font-style:italic;");
- words[i].replace('\x1d',"");
- }
- if (words[i].contains('\x1f')) {
- style.append(" text-decoration: underline;");
- words[i].replace('\x1f',"");
- }
- if (words[i].contains('\x03')) {
- int pos = words[i].indexOf('\x03');
- int len = 3;
- QString fg = words[i].mid(pos + 1,2);
- QString bg;
- if (words[i][pos+3] == ',')
- bg = words[i].mid(pos+4,2);
- style.append(" color:");
- style.append(_mircColorMap[fg]);
- style.append(";");
- if (!bg.isEmpty()) {
- style.append(" background-color:");
- style.append(_mircColorMap[bg]);
- style.append(";");
- len = 6;
- }
- words[i].replace(pos, len, "");
- words[i].replace('\x03',"");
- }
- words[i].replace("&","&");
- words[i].replace("<", "<");
- words[i].replace(">", ">");
- words[i].replace("\"", """);
- if (style.isEmpty()) {
- words[i] = "<span>" + words[i] + "</span>";
- }
- else {
- words[i] = "<span style=\"" + style + "\">" + words[i] + "</span>";
- }
- }
- return words.join("").replace("\n","<br />");
- }
- void MultiLineEdit::on_returnPressed() {
- on_returnPressed(convertRichtextToMircCodes());
- }
- void MultiLineEdit::on_returnPressed(const QString & text) {
- if(!text.isEmpty()) {
- foreach(const QString &line, text.split('\n', QString::SkipEmptyParts)) {
- if(line.isEmpty())
- continue;
- addToHistory(line);
- emit textEntered(line);
- }
- reset();
- _tempHistory.clear();
- } else {
- emit noTextEntered();
- }
- }
- void MultiLineEdit::on_textChanged() {
- QString newText = text();
- newText.replace("\r\n", "\n");
- newText.replace('\r', '\n');
- if(_mode == SingleLine) {
- if(!pasteProtectionEnabled())
- newText.replace('\n', ' ');
- else if(newText.contains('\n')) {
- QStringList lines = newText.split('\n', QString::SkipEmptyParts);
- clear();
- if(lines.count() >= 4) {
- QString msg = tr("Do you really want to paste %n lines?", "", lines.count());
- msg += "<p>";
- for(int i = 0; i < 4; i++) {
- msg += Qt::escape(lines[i].left(40));
- if(lines[i].count() > 40)
- msg += "...";
- msg += "<br />";
- }
- msg += "...</p>";
- QMessageBox question(QMessageBox::NoIcon, tr("Paste Protection"), msg, QMessageBox::Yes|QMessageBox::No);
- question.setDefaultButton(QMessageBox::No);
- #ifdef Q_WS_MAC
- question.setWindowFlags(question.windowFlags() | Qt::Sheet);
- #endif
- if(question.exec() != QMessageBox::Yes)
- return;
- }
- foreach(QString line, lines) {
- clear();
- insert(line);
- on_returnPressed();
- }
- }
- }
- _singleLine = (newText.indexOf('\n') < 0);
- if(document()->size().height() != _lastDocumentHeight) {
- _lastDocumentHeight = document()->size().height();
- on_documentHeightChanged(_lastDocumentHeight);
- }
- updateSizeHint();
- ensureCursorVisible();
- }
- void MultiLineEdit::on_documentHeightChanged(qreal) {
- updateScrollBars();
- }
- void MultiLineEdit::reset() {
- // every time the MultiLineEdit is cleared we also reset history index
- _idx = _history.count();
- clear();
- QTextBlockFormat format = textCursor().blockFormat();
- format.setLeftMargin(leftMargin); // we want a little space between the frame and the contents
- textCursor().setBlockFormat(format);
- updateScrollBars();
- }
- void MultiLineEdit::showHistoryEntry() {
- // if the user changed the history, display the changed line
- setHtml(convertMircCodesToHtml(_tempHistory.contains(_idx) ? _tempHistory[_idx] : _history[_idx]));
- QTextCursor cursor = textCursor();
- QTextBlockFormat format = cursor.blockFormat();
- format.setLeftMargin(leftMargin); // we want a little space between the frame and the contents
- cursor.setBlockFormat(format);
- cursor.movePosition(QTextCursor::End);
- setTextCursor(cursor);
- updateScrollBars();
- }