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Diffstat (limited to 'qtermwidget/Emulation.cpp')
| -rw-r--r-- | qtermwidget/Emulation.cpp | 543 |
1 files changed, 543 insertions, 0 deletions
diff --git a/qtermwidget/Emulation.cpp b/qtermwidget/Emulation.cpp new file mode 100644 index 0000000..e767a42 --- /dev/null +++ b/qtermwidget/Emulation.cpp @@ -0,0 +1,543 @@ +/* + This file is part of Konsole, an X terminal. + + Copyright (C) 2007 Robert Knight <robertknight@gmail.com> + Copyright (C) 1997,1998 by Lars Doelle <lars.doelle@on-line.de> + Copyright (C) 1996 by Matthias Ettrich <ettrich@kde.org> + + Rewritten for QT4 by e_k <e_k at users.sourceforge.net>, Copyright (C)2008 + + 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) any later version. + + 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., 51 Franklin Street, Fifth Floor, Boston, MA + 02110-1301 USA. +*/ + +// Own +#include "Emulation.h" + +// System +#include <assert.h> +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> + +// Qt +#include <QtGui/QApplication> +#include <QtGui/QClipboard> +#include <QtCore/QHash> +#include <QtGui/QKeyEvent> +#include <QtCore/QRegExp> +#include <QtCore/QTextStream> +#include <QtCore/QThread> + +#include <QtCore/QTime> + +// Konsole +#include "KeyboardTranslator.h" +#include "Screen.h" +#include "TerminalCharacterDecoder.h" +#include "ScreenWindow.h" + +using namespace Konsole; + +/* ------------------------------------------------------------------------- */ +/* */ +/* Emulation */ +/* */ +/* ------------------------------------------------------------------------- */ + +//#define CNTL(c) ((c)-'@') + +/*! +*/ + +Emulation::Emulation() : + _currentScreen(0), + _codec(0), + _decoder(0), + _keyTranslator(0), + _usesMouse(false) +{ + + // create screens with a default size + _screen[0] = new Screen(40,80); + _screen[1] = new Screen(40,80); + _currentScreen = _screen[0]; + + QObject::connect(&_bulkTimer1, SIGNAL(timeout()), this, SLOT(showBulk()) ); + QObject::connect(&_bulkTimer2, SIGNAL(timeout()), this, SLOT(showBulk()) ); + + // listen for mouse status changes + connect( this , SIGNAL(programUsesMouseChanged(bool)) , + SLOT(usesMouseChanged(bool)) ); +} + +bool Emulation::programUsesMouse() const +{ + return _usesMouse; +} + +void Emulation::usesMouseChanged(bool usesMouse) +{ + _usesMouse = usesMouse; +} + +ScreenWindow* Emulation::createWindow() +{ + ScreenWindow* window = new ScreenWindow(); + window->setScreen(_currentScreen); + _windows << window; + + connect(window , SIGNAL(selectionChanged()), + this , SLOT(bufferedUpdate())); + + connect(this , SIGNAL(outputChanged()), + window , SLOT(notifyOutputChanged()) ); + return window; +} + +/*! +*/ + +Emulation::~Emulation() +{ + QListIterator<ScreenWindow*> windowIter(_windows); + + while (windowIter.hasNext()) + { + delete windowIter.next(); + } + + delete _screen[0]; + delete _screen[1]; + delete _decoder; +} + +/*! change between primary and alternate _screen +*/ + +void Emulation::setScreen(int n) +{ + Screen *old = _currentScreen; + _currentScreen = _screen[n&1]; + if (_currentScreen != old) + { + old->setBusySelecting(false); + + // tell all windows onto this emulation to switch to the newly active _screen + QListIterator<ScreenWindow*> windowIter(_windows); + while ( windowIter.hasNext() ) + { + windowIter.next()->setScreen(_currentScreen); + } + } +} + +void Emulation::clearHistory() +{ + _screen[0]->setScroll( _screen[0]->getScroll() , false ); +} +void Emulation::setHistory(const HistoryType& t) +{ + _screen[0]->setScroll(t); + + showBulk(); +} + +const HistoryType& Emulation::history() +{ + return _screen[0]->getScroll(); +} + +void Emulation::setCodec(const QTextCodec * qtc) +{ + Q_ASSERT( qtc ); + + _codec = qtc; + delete _decoder; + _decoder = _codec->makeDecoder(); + + emit useUtf8Request(utf8()); +} + +void Emulation::setCodec(EmulationCodec codec) +{ + if ( codec == Utf8Codec ) + setCodec( QTextCodec::codecForName("utf8") ); + else if ( codec == LocaleCodec ) + setCodec( QTextCodec::codecForLocale() ); +} + +void Emulation::setKeyBindings(const QString& name) +{ + _keyTranslator = KeyboardTranslatorManager::instance()->findTranslator(name); +} + +QString Emulation::keyBindings() +{ + return _keyTranslator->name(); +} + + +// Interpreting Codes --------------------------------------------------------- + +/* + This section deals with decoding the incoming character stream. + Decoding means here, that the stream is first separated into `tokens' + which are then mapped to a `meaning' provided as operations by the + `Screen' class. +*/ + +/*! +*/ + +void Emulation::receiveChar(int c) +// process application unicode input to terminal +// this is a trivial scanner +{ + c &= 0xff; + switch (c) + { + case '\b' : _currentScreen->BackSpace(); break; + case '\t' : _currentScreen->Tabulate(); break; + case '\n' : _currentScreen->NewLine(); break; + case '\r' : _currentScreen->Return(); break; + case 0x07 : emit stateSet(NOTIFYBELL); + break; + default : _currentScreen->ShowCharacter(c); break; + }; +} + +/* ------------------------------------------------------------------------- */ +/* */ +/* Keyboard Handling */ +/* */ +/* ------------------------------------------------------------------------- */ + +/*! +*/ + +void Emulation::sendKeyEvent( QKeyEvent* ev ) +{ + emit stateSet(NOTIFYNORMAL); + + if (!ev->text().isEmpty()) + { // A block of text + // Note that the text is proper unicode. + // We should do a conversion here, but since this + // routine will never be used, we simply emit plain ascii. + //emit sendBlock(ev->text().toAscii(),ev->text().length()); + emit sendData(ev->text().toUtf8(),ev->text().length()); + } +} + +void Emulation::sendString(const char*,int) +{ + // default implementation does nothing +} + +void Emulation::sendMouseEvent(int /*buttons*/, int /*column*/, int /*row*/, int /*eventType*/) +{ + // default implementation does nothing +} + +// Unblocking, Byte to Unicode translation --------------------------------- -- + +/* + We are doing code conversion from locale to unicode first. +TODO: Character composition from the old code. See #96536 +*/ + +void Emulation::receiveData(const char* text, int length) +{ + emit stateSet(NOTIFYACTIVITY); + + bufferedUpdate(); + + QString unicodeText = _decoder->toUnicode(text,length); + + //send characters to terminal emulator + for (int i=0;i<unicodeText.length();i++) + { + receiveChar(unicodeText[i].unicode()); + } + + //look for z-modem indicator + //-- someone who understands more about z-modems that I do may be able to move + //this check into the above for loop? + for (int i=0;i<length;i++) + { + if (text[i] == '\030') + { + if ((length-i-1 > 3) && (strncmp(text+i+1, "B00", 3) == 0)) + emit zmodemDetected(); + } + } +} + +//OLDER VERSION +//This version of onRcvBlock was commented out because +// a) It decoded incoming characters one-by-one, which is slow in the current version of Qt (4.2 tech preview) +// b) It messed up decoding of non-ASCII characters, with the result that (for example) chinese characters +// were not printed properly. +// +//There is something about stopping the _decoder if "we get a control code halfway a multi-byte sequence" (see below) +//which hasn't been ported into the newer function (above). Hopefully someone who understands this better +//can find an alternative way of handling the check. + + +/*void Emulation::onRcvBlock(const char *s, int len) +{ + emit notifySessionState(NOTIFYACTIVITY); + + bufferedUpdate(); + for (int i = 0; i < len; i++) + { + + QString result = _decoder->toUnicode(&s[i],1); + int reslen = result.length(); + + // If we get a control code halfway a multi-byte sequence + // we flush the _decoder and continue with the control code. + if ((s[i] < 32) && (s[i] > 0)) + { + // Flush _decoder + while(!result.length()) + result = _decoder->toUnicode(&s[i],1); + reslen = 1; + result.resize(reslen); + result[0] = QChar(s[i]); + } + + for (int j = 0; j < reslen; j++) + { + if (result[j].characterategory() == QChar::Mark_NonSpacing) + _currentScreen->compose(result.mid(j,1)); + else + onRcvChar(result[j].unicode()); + } + if (s[i] == '\030') + { + if ((len-i-1 > 3) && (strncmp(s+i+1, "B00", 3) == 0)) + emit zmodemDetected(); + } + } +}*/ + +// Selection --------------------------------------------------------------- -- + +#if 0 +void Emulation::onSelectionBegin(const int x, const int y, const bool columnmode) { + if (!connected) return; + _currentScreen->setSelectionStart( x,y,columnmode); + showBulk(); +} + +void Emulation::onSelectionExtend(const int x, const int y) { + if (!connected) return; + _currentScreen->setSelectionEnd(x,y); + showBulk(); +} + +void Emulation::setSelection(const bool preserve_line_breaks) { + if (!connected) return; + QString t = _currentScreen->selectedText(preserve_line_breaks); + if (!t.isNull()) + { + QListIterator< TerminalDisplay* > viewIter(_views); + + while (viewIter.hasNext()) + viewIter.next()->setSelection(t); + } +} + +void Emulation::testIsSelected(const int x, const int y, bool &selected) +{ + if (!connected) return; + selected=_currentScreen->isSelected(x,y); +} + +void Emulation::clearSelection() { + if (!connected) return; + _currentScreen->clearSelection(); + showBulk(); +} + +#endif + +void Emulation::writeToStream( TerminalCharacterDecoder* _decoder , + int startLine , + int endLine) +{ + _currentScreen->writeToStream(_decoder,startLine,endLine); +} + +int Emulation::lineCount() +{ + // sum number of lines currently on _screen plus number of lines in history + return _currentScreen->getLines() + _currentScreen->getHistLines(); +} + +// Refreshing -------------------------------------------------------------- -- + +#define BULK_TIMEOUT1 10 +#define BULK_TIMEOUT2 40 + +/*! +*/ +void Emulation::showBulk() +{ + _bulkTimer1.stop(); + _bulkTimer2.stop(); + + emit outputChanged(); + + _currentScreen->resetScrolledLines(); + _currentScreen->resetDroppedLines(); +} + +void Emulation::bufferedUpdate() +{ + _bulkTimer1.setSingleShot(true); + _bulkTimer1.start(BULK_TIMEOUT1); + if (!_bulkTimer2.isActive()) + { + _bulkTimer2.setSingleShot(true); + _bulkTimer2.start(BULK_TIMEOUT2); + } +} + +char Emulation::getErase() const +{ + return '\b'; +} + +void Emulation::setImageSize(int lines, int columns) +{ + //kDebug() << "Resizing image to: " << lines << "by" << columns << QTime::currentTime().msec(); + Q_ASSERT( lines > 0 ); + Q_ASSERT( columns > 0 ); + + _screen[0]->resizeImage(lines,columns); + _screen[1]->resizeImage(lines,columns); + + emit imageSizeChanged(lines,columns); + + bufferedUpdate(); +} + +QSize Emulation::imageSize() +{ + return QSize(_currentScreen->getColumns(), _currentScreen->getLines()); +} + +ushort ExtendedCharTable::extendedCharHash(ushort* unicodePoints , ushort length) const +{ + ushort hash = 0; + for ( ushort i = 0 ; i < length ; i++ ) + { + hash = 31*hash + unicodePoints[i]; + } + return hash; +} +bool ExtendedCharTable::extendedCharMatch(ushort hash , ushort* unicodePoints , ushort length) const +{ + ushort* entry = extendedCharTable[hash]; + + // compare given length with stored sequence length ( given as the first ushort in the + // stored buffer ) + if ( entry == 0 || entry[0] != length ) + return false; + // if the lengths match, each character must be checked. the stored buffer starts at + // entry[1] + for ( int i = 0 ; i < length ; i++ ) + { + if ( entry[i+1] != unicodePoints[i] ) + return false; + } + return true; +} +ushort ExtendedCharTable::createExtendedChar(ushort* unicodePoints , ushort length) +{ + // look for this sequence of points in the table + ushort hash = extendedCharHash(unicodePoints,length); + + // check existing entry for match + while ( extendedCharTable.contains(hash) ) + { + if ( extendedCharMatch(hash,unicodePoints,length) ) + { + // this sequence already has an entry in the table, + // return its hash + return hash; + } + else + { + // if hash is already used by another, different sequence of unicode character + // points then try next hash + hash++; + } + } + + + // add the new sequence to the table and + // return that index + ushort* buffer = new ushort[length+1]; + buffer[0] = length; + for ( int i = 0 ; i < length ; i++ ) + buffer[i+1] = unicodePoints[i]; + + extendedCharTable.insert(hash,buffer); + + return hash; +} + +ushort* ExtendedCharTable::lookupExtendedChar(ushort hash , ushort& length) const +{ + // lookup index in table and if found, set the length + // argument and return a pointer to the character sequence + + ushort* buffer = extendedCharTable[hash]; + if ( buffer ) + { + length = buffer[0]; + return buffer+1; + } + else + { + length = 0; + return 0; + } +} + +ExtendedCharTable::ExtendedCharTable() +{ +} +ExtendedCharTable::~ExtendedCharTable() +{ + // free all allocated character buffers + QHashIterator<ushort,ushort*> iter(extendedCharTable); + while ( iter.hasNext() ) + { + iter.next(); + delete[] iter.value(); + } +} + +// global instance +ExtendedCharTable ExtendedCharTable::instance; + + +//#include "moc_Emulation.cpp" + |