Diffstat (limited to 'noncore/apps/opie-console/TEmulation.cpp') (more/less context) (ignore whitespace changes)
| -rw-r--r-- | noncore/apps/opie-console/TEmulation.cpp | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/noncore/apps/opie-console/TEmulation.cpp b/noncore/apps/opie-console/TEmulation.cpp index d0169d7..6ff73af 100644 --- a/noncore/apps/opie-console/TEmulation.cpp +++ b/noncore/apps/opie-console/TEmulation.cpp @@ -25,96 +25,102 @@ Thus this module knows mainly about decoding escapes sequences and is a stateless device w.r.t. the semantics. It is also responsible to refresh the TEWidget by certain rules. \sa TEWidget \sa TEScreen \par A note on refreshing Although the modifications to the current screen image could immediately be propagated via `TEWidget' to the graphical surface, we have chosen another way here. The reason for doing so is twofold. First, experiments show that directly displaying the operation results in slowing down the overall performance of emulations. Displaying individual characters using X11 creates a lot of overhead. Second, by using the following refreshing method, the screen operations can be completely separated from the displaying. This greatly simplifies the programmer's task of coding and maintaining the screen operations, since one need not worry about differential modifications on the display affecting the operation of concern. We use a refreshing algorithm here that has been adoped from rxvt/kvt. By this, refreshing is driven by a timer, which is (re)started whenever a new bunch of data to be interpreted by the emulation arives at `onRcvBlock'. As soon as no more data arrive for `BULK_TIMEOUT' milliseconds, we trigger refresh. This rule suits both bulk display operation as done by curses as well as individual characters typed. (BULK_TIMEOUT < 1000 / max characters received from keyboard per second). Additionally, we trigger refreshing by newlines comming in to make visual snapshots of lists as produced by `cat', `ls' and likely programs, thereby producing the illusion of a permanent and immediate display operation. As a sort of catch-all needed for cases where none of the above conditions catch, the screen refresh is also triggered by a count of incoming bulks (`bulk_incnt'). */ /* FIXME - evtl. the bulk operations could be made more transparent. */ #include "TEmulation.h" + +/* OPIE */ +#include <opie2/odebug.h> +using namespace Opie::Core; + +/* STD */ #include <stdio.h> #include <stdlib.h> #include <unistd.h> /* ------------------------------------------------------------------------- */ /* */ /* TEmulation */ /* */ /* ------------------------------------------------------------------------- */ #define CNTL(c) ((c)-'@') /*! */ TEmulation::TEmulation(TEWidget* gui) : decoder((QTextDecoder*)NULL) { this->gui = gui; screen[0] = new TEScreen(gui->Lines(),gui->Columns()); screen[1] = new TEScreen(gui->Lines(),gui->Columns()); scr = screen[0]; bulk_nlcnt = 0; // reset bulk newline counter bulk_incnt = 0; // reset bulk counter connected = FALSE; QObject::connect(&bulk_timer, SIGNAL(timeout()), this, SLOT(showBulk()) ); QObject::connect(gui,SIGNAL(changedImageSizeSignal(int,int)), this,SLOT(onImageSizeChange(int,int))); QObject::connect(gui,SIGNAL(changedHistoryCursor(int)), this,SLOT(onHistoryCursorChange(int))); QObject::connect(gui,SIGNAL(keyPressedSignal(QKeyEvent*)), this,SLOT(onKeyPress(QKeyEvent*))); QObject::connect(gui,SIGNAL(beginSelectionSignal(const int,const int)), this,SLOT(onSelectionBegin(const int,const int)) ); QObject::connect(gui,SIGNAL(extendSelectionSignal(const int,const int)), this,SLOT(onSelectionExtend(const int,const int)) ); QObject::connect(gui,SIGNAL(endSelectionSignal(const BOOL)), this,SLOT(setSelection(const BOOL)) ); QObject::connect(gui,SIGNAL(clearSelectionSignal()), this,SLOT(clearSelection()) ); } /*! */ @@ -159,97 +165,97 @@ void TEmulation::setKeytrans(int no) { keytrans = KeyTrans::find(no); } void TEmulation::setKeytrans(const char * no) { keytrans = KeyTrans::find(no); } // Interpreting Codes --------------------------------------------------------- /* This section deals with decoding the incoming character stream. Decoding means here, that the stream is first seperated into `tokens' which are then mapped to a `meaning' provided as operations by the `Screen' class. */ /*! */ void TEmulation::onRcvChar(int c) // process application unicode input to terminal // this is a trivial scanner { c &= 0xff; switch (c) { case '\b' : scr->BackSpace(); break; case '\t' : scr->Tabulate(); break; case '\n' : scr->NewLine(); break; case '\r' : scr->Return(); break; case 0x07 : gui->Bell(); break; default : scr->ShowCharacter(c); break; }; } /* ------------------------------------------------------------------------- */ /* */ /* Keyboard Handling */ /* */ /* ------------------------------------------------------------------------- */ /*! */ void TEmulation::onKeyPress( QKeyEvent* ev ) { - qWarning("onKeyPress,...."); + owarn << "onKeyPress,...." << oendl; if (!connected) return; // someone else gets the keys if (scr->getHistCursor() != scr->getHistLines()); scr->setHistCursor(scr->getHistLines()); 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 sndBlock(ev->text().ascii(),ev->text().length()); } else if (ev->ascii()>0) { unsigned char c[1]; c[0] = ev->ascii(); emit sndBlock((char*)c,1); } } // Unblocking, Byte to Unicode translation --------------------------------- -- /* We are doing code conversion from locale to unicode first. */ void TEmulation::onRcvBlock(const char *s, int len) { bulkStart(); bulk_incnt += 1; for (int i = 0; i < len; i++) { QString result = decoder->toUnicode(&s[i],1); int reslen = result.length(); for (int j = 0; j < reslen; j++) onRcvChar(result[j].unicode()); if (s[i] == '\n') bulkNewline(); } bulkEnd(); } // Selection --------------------------------------------------------------- -- void TEmulation::onSelectionBegin(const int x, const int y) { if (!connected) return; scr->setSelBeginXY(x,y); showBulk(); } void TEmulation::onSelectionExtend(const int x, const int y) { if (!connected) return; |