/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
1/***************************************************************************
2 * Copyright (C) 2005-2010 by the Quassel Project *
3 * devel@quassel-irc.org *
4 * *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) version 3. *
9 * *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
14 * *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
19 ***************************************************************************/
20
21#include <QApplication>
22#include <QMenu>
23#include <QMessageBox>
24#include <QScrollBar>
25
26#include "actioncollection.h"
27#include "bufferview.h"
28#include "graphicalui.h"
29#include "multilineedit.h"
30#include "tabcompleter.h"
31
32const int leftMargin = 3;
33
34MultiLineEdit::MultiLineEdit(QWidget *parent)
35 : MultiLineEditParent(parent),
36 _idx(0),
37 _mode(SingleLine),
38 _singleLine(true),
39 _minHeight(1),
40 _maxHeight(5),
41 _scrollBarsEnabled(true),
42 _pasteProtectionEnabled(true),
43 _emacsMode(false),
44 _lastDocumentHeight(-1)
45{
46#if QT_VERSION >= 0x040500
47 document()->setDocumentMargin(0); // new in Qt 4.5 and we really don't want it here
48#endif
49
50 setAcceptRichText(false);
51#ifdef HAVE_KDE
52 enableFindReplace(false);
53#endif
54
55 setMode(SingleLine);
56 setWordWrapEnabled(false);
57 reset();
58
59 connect(this, SIGNAL(textChanged()), this, SLOT(on_textChanged()));
60
61 _mircColorMap["00"] = "#ffffff";
62 _mircColorMap["01"] = "#000000";
63 _mircColorMap["02"] = "#000080";
64 _mircColorMap["03"] = "#008000";
65 _mircColorMap["04"] = "#ff0000";
66 _mircColorMap["05"] = "#800000";
67 _mircColorMap["06"] = "#800080";
68 _mircColorMap["07"] = "#ffa500";
69 _mircColorMap["08"] = "#ffff00";
70 _mircColorMap["09"] = "#00ff00";
71 _mircColorMap["10"] = "#008080";
72 _mircColorMap["11"] = "#00ffff";
73 _mircColorMap["12"] = "#4169e1";
74 _mircColorMap["13"] = "#ff00ff";
75 _mircColorMap["14"] = "#808080";
76 _mircColorMap["15"] = "#c0c0c0";
77
78}
79
80MultiLineEdit::~MultiLineEdit() {
81}
82
83void MultiLineEdit::setCustomFont(const QFont &font) {
84 setFont(font);
85 updateSizeHint();
86}
87
88void MultiLineEdit::setMode(Mode mode) {
89 if(mode == _mode)
90 return;
91
92 _mode = mode;
93}
94
95void MultiLineEdit::setMinHeight(int lines) {
96 if(lines == _minHeight)
97 return;
98
99 _minHeight = lines;
100 updateSizeHint();
101}
102
103void MultiLineEdit::setMaxHeight(int lines) {
104 if(lines == _maxHeight)
105 return;
106
107 _maxHeight = lines;
108 updateSizeHint();
109}
110
111void MultiLineEdit::setScrollBarsEnabled(bool enable) {
112 if(_scrollBarsEnabled == enable)
113 return;
114
115 _scrollBarsEnabled = enable;
116 updateScrollBars();
117}
118
119void MultiLineEdit::updateScrollBars() {
120 QFontMetrics fm(font());
121 int _maxPixelHeight = fm.lineSpacing() * _maxHeight;
122 if(_scrollBarsEnabled && document()->size().height() > _maxPixelHeight)
123 setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
124 else
125 setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
126
127 if(!_scrollBarsEnabled || isSingleLine())
128 setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
129 else
130 setHorizontalScrollBarPolicy(Qt::ScrollBarAsNeeded);
131}
132
133void MultiLineEdit::resizeEvent(QResizeEvent *event) {
134 QTextEdit::resizeEvent(event);
135 updateSizeHint();
136 updateScrollBars();
137}
138
139void MultiLineEdit::updateSizeHint() {
140 QFontMetrics fm(font());
141 int minPixelHeight = fm.lineSpacing() * _minHeight;
142 int maxPixelHeight = fm.lineSpacing() * _maxHeight;
143 int scrollBarHeight = horizontalScrollBar()->isVisible() ? horizontalScrollBar()->height() : 0;
144
145 // use the style to determine a decent size
146 int h = qMin(qMax((int)document()->size().height() + scrollBarHeight, minPixelHeight), maxPixelHeight) + 2 * frameWidth();
147 QStyleOptionFrameV2 opt;
148 opt.initFrom(this);
149 opt.rect = QRect(0, 0, 100, h);
150 opt.lineWidth = lineWidth();
151 opt.midLineWidth = midLineWidth();
152 opt.state |= QStyle::State_Sunken;
153 QSize s = style()->sizeFromContents(QStyle::CT_LineEdit, &opt, QSize(100, h).expandedTo(QApplication::globalStrut()), this);
154 if(s != _sizeHint) {
155 _sizeHint = s;
156 updateGeometry();
157 }
158}
159
160QSize MultiLineEdit::sizeHint() const {
161 if(!_sizeHint.isValid()) {
162 MultiLineEdit *that = const_cast<MultiLineEdit *>(this);
163 that->updateSizeHint();
164 }
165 return _sizeHint;
166}
167
168QSize MultiLineEdit::minimumSizeHint() const {
169 return sizeHint();
170}
171
172void MultiLineEdit::setEmacsMode(bool enable) {
173 _emacsMode = enable;
174}
175
176void MultiLineEdit::setSpellCheckEnabled(bool enable) {
177#ifdef HAVE_KDE
178 setCheckSpellingEnabled(enable);
179#else
180 Q_UNUSED(enable)
181#endif
182}
183
184void MultiLineEdit::setWordWrapEnabled(bool enable) {
185 setLineWrapMode(enable? WidgetWidth : NoWrap);
186 updateSizeHint();
187}
188
189void MultiLineEdit::setPasteProtectionEnabled(bool enable, QWidget *) {
190 _pasteProtectionEnabled = enable;
191}
192
193void MultiLineEdit::historyMoveBack() {
194 addToHistory(convertRichtextToMircCodes(), true);
195
196 if(_idx > 0) {
197 _idx--;
198 showHistoryEntry();
199 }
200}
201
202void MultiLineEdit::historyMoveForward() {
203 addToHistory(convertRichtextToMircCodes(), true);
204
205 if(_idx < _history.count()) {
206 _idx++;
207 if(_idx < _history.count() || _tempHistory.contains(_idx)) // tempHistory might have an entry for idx == history.count() + 1
208 showHistoryEntry();
209 else
210 reset(); // equals clear() in this case
211 } else {
212 addToHistory(convertRichtextToMircCodes());
213 reset();
214 }
215}
216
217bool MultiLineEdit::addToHistory(const QString &text, bool temporary) {
218 if(text.isEmpty())
219 return false;
220
221 Q_ASSERT(0 <= _idx && _idx <= _history.count());
222
223 if(temporary) {
224 // if an entry of the history is changed, we remember it and show it again at this
225 // position until a line was actually sent
226 // sent lines get appended to the history
227 if(_history.isEmpty() || text != _history[_idx - (int)(_idx == _history.count())]) {
228 _tempHistory[_idx] = text;
229 return true;
230 }
231 } else {
232 if(_history.isEmpty() || text != _history.last()) {
233 _history << text;
234 _tempHistory.clear();
235 return true;
236 }
237 }
238 return false;
239}
240
241bool MultiLineEdit::event(QEvent *e) {
242 // We need to make sure that global shortcuts aren't eaten
243 if(e->type() == QEvent::ShortcutOverride) {
244 QKeyEvent* event = static_cast<QKeyEvent *>(e);
245 QKeySequence key = QKeySequence(event->key() | event->modifiers());
246 foreach(QAction *action, GraphicalUi::actionCollection()->actions()) {
247 if(action->shortcuts().contains(key)) {
248 e->ignore();
249 return false;
250 }
251 }
252 }
253
254 return MultiLineEditParent::event(e);
255}
256
257void MultiLineEdit::keyPressEvent(QKeyEvent *event) {
258 // Workaround the fact that Qt < 4.5 doesn't know InsertLineSeparator yet
259#if QT_VERSION >= 0x040500
260 if(event == QKeySequence::InsertLineSeparator) {
261#else
262
263# ifdef Q_WS_MAC
264 if((event->key() == Qt::Key_Return || event->key() == Qt::Key_Enter) && event->modifiers() & Qt::META) {
265# else
266 if((event->key() == Qt::Key_Return || event->key() == Qt::Key_Enter) && event->modifiers() & Qt::SHIFT) {
267# endif
268#endif
269
270 if(_mode == SingleLine) {
271 event->accept();
272 on_returnPressed();
273 return;
274 }
275 MultiLineEditParent::keyPressEvent(event);
276 return;
277 }
278
279 switch(event->key()) {
280 case Qt::Key_Up:
281 if(event->modifiers() & Qt::ShiftModifier)
282 break;
283 {
284 event->accept();
285 if(!(event->modifiers() & Qt::ControlModifier)) {
286 int pos = textCursor().position();
287 moveCursor(QTextCursor::Up);
288 if(pos == textCursor().position()) // already on top line -> history
289 historyMoveBack();
290 } else
291 historyMoveBack();
292 return;
293 }
294
295 case Qt::Key_Down:
296 if(event->modifiers() & Qt::ShiftModifier)
297 break;
298 {
299 event->accept();
300 if(!(event->modifiers() & Qt::ControlModifier)) {
301 int pos = textCursor().position();
302 moveCursor(QTextCursor::Down);
303 if(pos == textCursor().position()) // already on bottom line -> history
304 historyMoveForward();
305 } else
306 historyMoveForward();
307 return;
308 }
309
310 case Qt::Key_Return:
311 case Qt::Key_Enter:
312 case Qt::Key_Select:
313 event->accept();
314 on_returnPressed();
315 return;
316
317 // We don't want to have the tab key react even if no completer is installed
318 case Qt::Key_Tab:
319 event->accept();
320 return;
321
322 default:
323 ;
324 }
325
326 if(_emacsMode) {
327 if(event->modifiers() & Qt::ControlModifier) {
328 switch(event->key()) {
329 // move
330 case Qt::Key_A:
331 moveCursor(QTextCursor::StartOfLine);
332 return;
333 case Qt::Key_E:
334 moveCursor(QTextCursor::EndOfLine);
335 return;
336 case Qt::Key_F:
337 moveCursor(QTextCursor::Right);
338 return;
339 case Qt::Key_B:
340 moveCursor(QTextCursor::Left);
341 return;
342
343 // modify
344 case Qt::Key_Y:
345 paste();
346 return;
347 case Qt::Key_K:
348 moveCursor(QTextCursor::EndOfLine, QTextCursor::KeepAnchor);
349 cut();
350 return;
351
352 default:
353 break;
354 }
355 }
356 else if(event->modifiers() & Qt::MetaModifier ||
357 event->modifiers() & Qt::AltModifier)
358 {
359 switch(event->key()) {
360 case Qt::Key_Right:
361 moveCursor(QTextCursor::WordRight);
362 return;
363 case Qt::Key_Left:
364 moveCursor(QTextCursor::WordLeft);
365 return;
366 case Qt::Key_F:
367 moveCursor(QTextCursor::WordRight);
368 return;
369 case Qt::Key_B:
370 moveCursor(QTextCursor::WordLeft);
371 return;
372 case Qt::Key_Less:
373 moveCursor(QTextCursor::Start);
374 return;
375 case Qt::Key_Greater:
376 moveCursor(QTextCursor::End);
377 return;
378
379 // modify
380 case Qt::Key_D:
381 moveCursor(QTextCursor::WordRight, QTextCursor::KeepAnchor);
382 cut();
383 return;
384
385 case Qt::Key_U: // uppercase word
386 moveCursor(QTextCursor::WordRight, QTextCursor::KeepAnchor);
387 textCursor().insertText(textCursor().selectedText().toUpper());
388 return;
389
390 case Qt::Key_L: // lowercase word
391 moveCursor(QTextCursor::WordRight, QTextCursor::KeepAnchor);
392 textCursor().insertText(textCursor().selectedText().toLower());
393 return;
394
395 case Qt::Key_C: { // capitalize word
396 moveCursor(QTextCursor::WordRight, QTextCursor::KeepAnchor);
397 QString const text = textCursor().selectedText();
398 textCursor().insertText(text.left(1).toUpper() + text.mid(1).toLower());
399 return;
400 }
401
402 case Qt::Key_T: { // transpose words
403 moveCursor(QTextCursor::StartOfWord);
404 moveCursor(QTextCursor::EndOfWord, QTextCursor::KeepAnchor);
405 QString const word1 = textCursor().selectedText();
406 textCursor().clearSelection();
407 moveCursor(QTextCursor::WordRight);
408 moveCursor(QTextCursor::EndOfWord, QTextCursor::KeepAnchor);
409 QString const word2 = textCursor().selectedText();
410 if(!word2.isEmpty() && !word1.isEmpty()) {
411 textCursor().insertText(word1);
412 moveCursor(QTextCursor::WordLeft);
413 moveCursor(QTextCursor::WordLeft);
414 moveCursor(QTextCursor::EndOfWord, QTextCursor::KeepAnchor);
415 textCursor().insertText(word2);
416 moveCursor(QTextCursor::WordRight);
417 moveCursor(QTextCursor::EndOfWord);
418 }
419 return;
420 }
421
422 default:
423 break;
424 }
425 }
426 }
427
428#ifdef HAVE_KDE
429 KTextEdit::keyPressEvent(event);
430#else
431 QTextEdit::keyPressEvent(event);
432#endif
433}
434
435QString MultiLineEdit::convertRichtextToMircCodes() {
436 bool underline, bold, italic, color;
437 QString mircText, mircFgColor, mircBgColor;
438 QTextCursor cursor = textCursor();
439 QTextCursor peekcursor = textCursor();
440 cursor.movePosition(QTextCursor::Start);
441
442 underline = bold = italic = color = false;
443
444 while (cursor.movePosition(QTextCursor::NextCharacter, QTextCursor::KeepAnchor)) {
445
446 if (cursor.selectedText() == QString(QChar(QChar::LineSeparator))
447 || cursor.selectedText() == QString(QChar(QChar::ParagraphSeparator))) {
448 if (color) {
449 color = false;
450 mircText.append('\x03');
451 }
452 if (underline) {
453 underline = false;
454 mircText.append('\x1f');
455 }
456 if (italic) {
457 italic = false;
458 mircText.append('\x1d');
459 }
460 if (bold) {
461 bold = false;
462 mircText.append('\x02');
463 }
464 mircText.append('\n');
465 }
466 else {
467 if (!bold && cursor.charFormat().font().bold()) {
468 bold = true;
469 mircText.append('\x02');
470 }
471 if (!italic && cursor.charFormat().fontItalic()) {
472 italic = true;
473 mircText.append('\x1d');
474 }
475 if (!underline && cursor.charFormat().fontUnderline()) {
476 underline = true;
477 mircText.append('\x1f');
478 }
479 if (!color && (cursor.charFormat().foreground().isOpaque() || cursor.charFormat().background().isOpaque())) {
480 color = true;
481 mircText.append('\x03');
482 mircFgColor = _mircColorMap.key(cursor.charFormat().foreground().color().name());
483 mircBgColor = _mircColorMap.key(cursor.charFormat().background().color().name());
484
485 if (mircFgColor.isEmpty()) {
486 mircFgColor = "01"; //use black if the current foreground color can't be converted
487 }
488
489 mircText.append(mircFgColor);
490 if (cursor.charFormat().background().isOpaque())
491 mircText.append("," + mircBgColor);
492 }
493
494 mircText.append(cursor.selectedText());
495
496 peekcursor.setPosition(cursor.position());
497 peekcursor.movePosition(QTextCursor::NextCharacter, QTextCursor::KeepAnchor);
498
499 if (mircCodesChanged(cursor, peekcursor)) {
500 if (color) {
501 color = false;
502 mircText.append('\x03');
503 }
504 if (underline) {
505 underline = false;
506 mircText.append('\x1f');
507 }
508 if (italic) {
509 italic = false;
510 mircText.append('\x1d');
511 }
512 if (bold) {
513 bold = false;
514 mircText.append('\x02');
515 }
516 }
517 }
518
519 cursor.clearSelection();
520 }
521 if (color) {
522 color = false;
523 mircText.append('\x03');
524 }
525 if (underline) {
526 underline = false;
527 mircText.append('\x1f');
528 }
529 if (italic) {
530 italic = false;
531 mircText.append('\x1d');
532 }
533 if (bold) {
534 bold = false;
535 mircText.append('\x02');
536 }
537
538 return mircText;
539}
540
541bool MultiLineEdit::mircCodesChanged(QTextCursor &cursor, QTextCursor &peekcursor) {
542 bool changed = false;
543 if (cursor.charFormat().font().bold() != peekcursor.charFormat().font().bold())
544 changed = true;
545 if (cursor.charFormat().fontItalic() != peekcursor.charFormat().fontItalic())
546 changed = true;
547 if (cursor.charFormat().fontUnderline() != peekcursor.charFormat().fontUnderline())
548 changed = true;
549 if (cursor.charFormat().foreground().color() != peekcursor.charFormat().foreground().color())
550 changed = true;
551 if (cursor.charFormat().background().color() != peekcursor.charFormat().background().color())
552 changed = true;
553 return changed;
554}
555
556QString MultiLineEdit::convertMircCodesToHtml(const QString &text) {
557 QStringList words;
558 QRegExp mircCode = QRegExp("(| | |)", Qt::CaseSensitive);
559
560 int posLeft = 0;
561 int posRight = 0;
562
563 for(;;) {
564 posRight = mircCode.indexIn(text, posLeft);
565
566 if(posRight < 0) {
567 words << text.mid(posLeft);
568 break; // no more mirc color codes
569 }
570
571 if (posLeft < posRight) {
572 words << text.mid(posLeft, posRight - posLeft);
573 posLeft = posRight;
574 }
575
576 posRight = text.indexOf(mircCode.cap(), posRight + 1);
577 words << text.mid(posLeft, posRight + 1 - posLeft);
578 posLeft = posRight + 1;
579 }
580
581 for (int i = 0; i < words.count(); i++) {
582 QString style;
583 if (words[i].contains('\x02')) {
584 style.append(" font-weight:600;");
585 words[i].replace('\x02',"");
586 }
587 if (words[i].contains('\x1d')) {
588 style.append(" font-style:italic;");
589 words[i].replace('\x1d',"");
590 }
591 if (words[i].contains('\x1f')) {
592 style.append(" text-decoration: underline;");
593 words[i].replace('\x1f',"");
594 }
595 if (words[i].contains('\x03')) {
596 int pos = words[i].indexOf('\x03');
597 int len = 3;
598 QString fg = words[i].mid(pos + 1,2);
599 QString bg;
600 if (words[i][pos+3] == ',')
601 bg = words[i].mid(pos+4,2);
602
603 style.append(" color:");
604 style.append(_mircColorMap[fg]);
605 style.append(";");
606
607 if (!bg.isEmpty()) {
608 style.append(" background-color:");
609 style.append(_mircColorMap[bg]);
610 style.append(";");
611 len = 6;
612 }
613 words[i].replace(pos, len, "");
614 words[i].replace('\x03',"");
615 }
616 words[i].replace("&","&");
617 words[i].replace("<", "<");
618 words[i].replace(">", ">");
619 words[i].replace("\"", """);
620 if (style.isEmpty()) {
621 words[i] = "<span>" + words[i] + "</span>";
622 }
623 else {
624 words[i] = "<span style=\"" + style + "\">" + words[i] + "</span>";
625 }
626 }
627 return words.join("").replace("\n","<br />");
628}
629
630void MultiLineEdit::on_returnPressed() {
631 on_returnPressed(convertRichtextToMircCodes());
632}
633
634void MultiLineEdit::on_returnPressed(const QString & text) {
635 if(!text.isEmpty()) {
636 foreach(const QString &line, text.split('\n', QString::SkipEmptyParts)) {
637 if(line.isEmpty())
638 continue;
639 addToHistory(line);
640 emit textEntered(line);
641 }
642 reset();
643 _tempHistory.clear();
644 } else {
645 emit noTextEntered();
646 }
647}
648
649void MultiLineEdit::on_textChanged() {
650 QString newText = text();
651 newText.replace("\r\n", "\n");
652 newText.replace('\r', '\n');
653 if(_mode == SingleLine) {
654 if(!pasteProtectionEnabled())
655 newText.replace('\n', ' ');
656 else if(newText.contains('\n')) {
657 QStringList lines = newText.split('\n', QString::SkipEmptyParts);
658 clear();
659
660 if(lines.count() >= 4) {
661 QString msg = tr("Do you really want to paste %n lines?", "", lines.count());
662 msg += "<p>";
663 for(int i = 0; i < 4; i++) {
664 msg += Qt::escape(lines[i].left(40));
665 if(lines[i].count() > 40)
666 msg += "...";
667 msg += "<br />";
668 }
669 msg += "...</p>";
670 QMessageBox question(QMessageBox::NoIcon, tr("Paste Protection"), msg, QMessageBox::Yes|QMessageBox::No);
671 question.setDefaultButton(QMessageBox::No);
672#ifdef Q_WS_MAC
673 question.setWindowFlags(question.windowFlags() | Qt::Sheet);
674#endif
675 if(question.exec() != QMessageBox::Yes)
676 return;
677 }
678
679 foreach(QString line, lines) {
680 clear();
681 insert(line);
682 on_returnPressed();
683 }
684 }
685 }
686
687 _singleLine = (newText.indexOf('\n') < 0);
688
689 if(document()->size().height() != _lastDocumentHeight) {
690 _lastDocumentHeight = document()->size().height();
691 on_documentHeightChanged(_lastDocumentHeight);
692 }
693 updateSizeHint();
694 ensureCursorVisible();
695}
696
697void MultiLineEdit::on_documentHeightChanged(qreal) {
698 updateScrollBars();
699}
700
701void MultiLineEdit::reset() {
702 // every time the MultiLineEdit is cleared we also reset history index
703 _idx = _history.count();
704 clear();
705 QTextBlockFormat format = textCursor().blockFormat();
706 format.setLeftMargin(leftMargin); // we want a little space between the frame and the contents
707 textCursor().setBlockFormat(format);
708 updateScrollBars();
709}
710
711void MultiLineEdit::showHistoryEntry() {
712 // if the user changed the history, display the changed line
713 setHtml(convertMircCodesToHtml(_tempHistory.contains(_idx) ? _tempHistory[_idx] : _history[_idx]));
714 QTextCursor cursor = textCursor();
715 QTextBlockFormat format = cursor.blockFormat();
716 format.setLeftMargin(leftMargin); // we want a little space between the frame and the contents
717 cursor.setBlockFormat(format);
718 cursor.movePosition(QTextCursor::End);
719 setTextCursor(cursor);
720 updateScrollBars();
721}