You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
1389 lines
35 KiB
1389 lines
35 KiB
/*
|
|
This file is part of Konsole, an X terminal.
|
|
|
|
Copyright 2007-2008 by Robert Knight <robert.knight@gmail.com>
|
|
Copyright 1997,1998 by Lars Doelle <lars.doelle@on-line.de>
|
|
|
|
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 "Screen.h"
|
|
|
|
// Standard
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <string.h>
|
|
#include <ctype.h>
|
|
|
|
// Qt
|
|
#include <QTextStream>
|
|
#include <QDate>
|
|
|
|
// KDE
|
|
//#include <kdebug.h>
|
|
|
|
// Konsole
|
|
#include "konsole_wcwidth.h"
|
|
#include "TerminalCharacterDecoder.h"
|
|
|
|
using namespace Konsole;
|
|
|
|
//FIXME: this is emulation specific. Use false for xterm, true for ANSI.
|
|
//FIXME: see if we can get this from terminfo.
|
|
#define BS_CLEARS false
|
|
|
|
//Macro to convert x,y position on screen to position within an image.
|
|
//
|
|
//Originally the image was stored as one large contiguous block of
|
|
//memory, so a position within the image could be represented as an
|
|
//offset from the beginning of the block. For efficiency reasons this
|
|
//is no longer the case.
|
|
//Many internal parts of this class still use this representation for parameters and so on,
|
|
//notably moveImage() and clearImage().
|
|
//This macro converts from an X,Y position into an image offset.
|
|
#ifndef loc
|
|
#define loc(X,Y) ((Y)*columns+(X))
|
|
#endif
|
|
|
|
|
|
Character Screen::defaultChar = Character(' ',
|
|
CharacterColor(COLOR_SPACE_DEFAULT,DEFAULT_FORE_COLOR),
|
|
CharacterColor(COLOR_SPACE_DEFAULT,DEFAULT_BACK_COLOR),
|
|
DEFAULT_RENDITION);
|
|
|
|
//#define REVERSE_WRAPPED_LINES // for wrapped line debug
|
|
|
|
Screen::Screen(int l, int c)
|
|
: lines(l),
|
|
columns(c),
|
|
screenLines(new ImageLine[lines+1] ),
|
|
_scrolledLines(0),
|
|
_droppedLines(0),
|
|
history(new HistoryScrollNone()),
|
|
cuX(0), cuY(0),
|
|
currentRendition(0),
|
|
_topMargin(0), _bottomMargin(0),
|
|
selBegin(0), selTopLeft(0), selBottomRight(0),
|
|
blockSelectionMode(false),
|
|
effectiveForeground(CharacterColor()), effectiveBackground(CharacterColor()), effectiveRendition(0),
|
|
lastPos(-1)
|
|
{
|
|
lineProperties.resize(lines+1);
|
|
for (int i=0;i<lines+1;i++)
|
|
lineProperties[i]=LINE_DEFAULT;
|
|
|
|
initTabStops();
|
|
clearSelection();
|
|
reset();
|
|
}
|
|
|
|
/*! Destructor
|
|
*/
|
|
|
|
Screen::~Screen()
|
|
{
|
|
delete[] screenLines;
|
|
delete history;
|
|
}
|
|
|
|
void Screen::cursorUp(int n)
|
|
//=CUU
|
|
{
|
|
if (n == 0) n = 1; // Default
|
|
int stop = cuY < _topMargin ? 0 : _topMargin;
|
|
cuX = qMin(columns-1,cuX); // nowrap!
|
|
cuY = qMax(stop,cuY-n);
|
|
}
|
|
|
|
void Screen::cursorDown(int n)
|
|
//=CUD
|
|
{
|
|
if (n == 0) n = 1; // Default
|
|
int stop = cuY > _bottomMargin ? lines-1 : _bottomMargin;
|
|
cuX = qMin(columns-1,cuX); // nowrap!
|
|
cuY = qMin(stop,cuY+n);
|
|
}
|
|
|
|
void Screen::cursorLeft(int n)
|
|
//=CUB
|
|
{
|
|
if (n == 0) n = 1; // Default
|
|
cuX = qMin(columns-1,cuX); // nowrap!
|
|
cuX = qMax(0,cuX-n);
|
|
}
|
|
|
|
void Screen::cursorRight(int n)
|
|
//=CUF
|
|
{
|
|
if (n == 0) n = 1; // Default
|
|
cuX = qMin(columns-1,cuX+n);
|
|
}
|
|
|
|
void Screen::setMargins(int top, int bot)
|
|
//=STBM
|
|
{
|
|
if (top == 0) top = 1; // Default
|
|
if (bot == 0) bot = lines; // Default
|
|
top = top - 1; // Adjust to internal lineno
|
|
bot = bot - 1; // Adjust to internal lineno
|
|
if ( !( 0 <= top && top < bot && bot < lines ) )
|
|
{ //Debug()<<" setRegion("<<top<<","<<bot<<") : bad range.";
|
|
return; // Default error action: ignore
|
|
}
|
|
_topMargin = top;
|
|
_bottomMargin = bot;
|
|
cuX = 0;
|
|
cuY = getMode(MODE_Origin) ? top : 0;
|
|
|
|
}
|
|
|
|
int Screen::topMargin() const
|
|
{
|
|
return _topMargin;
|
|
}
|
|
int Screen::bottomMargin() const
|
|
{
|
|
return _bottomMargin;
|
|
}
|
|
|
|
void Screen::index()
|
|
//=IND
|
|
{
|
|
if (cuY == _bottomMargin)
|
|
scrollUp(1);
|
|
else if (cuY < lines-1)
|
|
cuY += 1;
|
|
}
|
|
|
|
void Screen::reverseIndex()
|
|
//=RI
|
|
{
|
|
if (cuY == _topMargin)
|
|
scrollDown(_topMargin,1);
|
|
else if (cuY > 0)
|
|
cuY -= 1;
|
|
}
|
|
|
|
void Screen::nextLine()
|
|
//=NEL
|
|
{
|
|
toStartOfLine(); index();
|
|
}
|
|
|
|
void Screen::eraseChars(int n)
|
|
{
|
|
if (n == 0) n = 1; // Default
|
|
int p = qMax(0,qMin(cuX+n-1,columns-1));
|
|
clearImage(loc(cuX,cuY),loc(p,cuY),' ');
|
|
}
|
|
|
|
void Screen::deleteChars(int n)
|
|
{
|
|
Q_ASSERT( n >= 0 );
|
|
|
|
// always delete at least one char
|
|
if (n == 0)
|
|
n = 1;
|
|
|
|
// if cursor is beyond the end of the line there is nothing to do
|
|
if ( cuX >= screenLines[cuY].count() )
|
|
return;
|
|
|
|
if ( cuX+n > screenLines[cuY].count() )
|
|
n = screenLines[cuY].count() - cuX;
|
|
|
|
Q_ASSERT( n >= 0 );
|
|
Q_ASSERT( cuX+n <= screenLines[cuY].count() );
|
|
|
|
screenLines[cuY].remove(cuX,n);
|
|
}
|
|
|
|
void Screen::insertChars(int n)
|
|
{
|
|
if (n == 0) n = 1; // Default
|
|
|
|
if ( screenLines[cuY].size() < cuX )
|
|
screenLines[cuY].resize(cuX);
|
|
|
|
screenLines[cuY].insert(cuX,n,' ');
|
|
|
|
if ( screenLines[cuY].count() > columns )
|
|
screenLines[cuY].resize(columns);
|
|
}
|
|
|
|
void Screen::repeatChars(int count)
|
|
//=REP
|
|
{
|
|
if (count == 0)
|
|
{
|
|
count = 1;
|
|
}
|
|
/**
|
|
* From ECMA-48 version 5, section 8.3.103
|
|
* If the character preceding REP is a control function or part of a
|
|
* control function, the effect of REP is not defined by this Standard.
|
|
*
|
|
* So, a "normal" program should always use REP immediately after a visible
|
|
* character (those other than escape sequences). So, lastDrawnChar can be
|
|
* safely used.
|
|
*/
|
|
for (int i = 0; i < count; i++)
|
|
{
|
|
displayCharacter(lastDrawnChar);
|
|
}
|
|
}
|
|
|
|
void Screen::deleteLines(int n)
|
|
{
|
|
if (n == 0) n = 1; // Default
|
|
scrollUp(cuY,n);
|
|
}
|
|
|
|
void Screen::insertLines(int n)
|
|
{
|
|
if (n == 0) n = 1; // Default
|
|
scrollDown(cuY,n);
|
|
}
|
|
|
|
void Screen::setMode(int m)
|
|
{
|
|
currentModes[m] = true;
|
|
switch(m)
|
|
{
|
|
case MODE_Origin : cuX = 0; cuY = _topMargin; break; //FIXME: home
|
|
}
|
|
}
|
|
|
|
void Screen::resetMode(int m)
|
|
{
|
|
currentModes[m] = false;
|
|
switch(m)
|
|
{
|
|
case MODE_Origin : cuX = 0; cuY = 0; break; //FIXME: home
|
|
}
|
|
}
|
|
|
|
void Screen::saveMode(int m)
|
|
{
|
|
savedModes[m] = currentModes[m];
|
|
}
|
|
|
|
void Screen::restoreMode(int m)
|
|
{
|
|
currentModes[m] = savedModes[m];
|
|
}
|
|
|
|
bool Screen::getMode(int m) const
|
|
{
|
|
return currentModes[m];
|
|
}
|
|
|
|
void Screen::saveCursor()
|
|
{
|
|
savedState.cursorColumn = cuX;
|
|
savedState.cursorLine = cuY;
|
|
savedState.rendition = currentRendition;
|
|
savedState.foreground = currentForeground;
|
|
savedState.background = currentBackground;
|
|
}
|
|
|
|
void Screen::restoreCursor()
|
|
{
|
|
cuX = qMin(savedState.cursorColumn,columns-1);
|
|
cuY = qMin(savedState.cursorLine,lines-1);
|
|
currentRendition = savedState.rendition;
|
|
currentForeground = savedState.foreground;
|
|
currentBackground = savedState.background;
|
|
updateEffectiveRendition();
|
|
}
|
|
|
|
void Screen::resizeImage(int new_lines, int new_columns)
|
|
{
|
|
if ((new_lines==lines) && (new_columns==columns)) return;
|
|
|
|
if (cuY > new_lines-1)
|
|
{ // attempt to preserve focus and lines
|
|
_bottomMargin = lines-1; //FIXME: margin lost
|
|
for (int i = 0; i < cuY-(new_lines-1); i++)
|
|
{
|
|
addHistLine(); scrollUp(0,1);
|
|
}
|
|
}
|
|
|
|
// create new screen lines and copy from old to new
|
|
|
|
ImageLine* newScreenLines = new ImageLine[new_lines+1];
|
|
for (int i=0; i < qMin(lines,new_lines+1) ;i++)
|
|
newScreenLines[i]=screenLines[i];
|
|
for (int i=lines;(i > 0) && (i<new_lines+1);i++)
|
|
newScreenLines[i].resize( new_columns );
|
|
|
|
lineProperties.resize(new_lines+1);
|
|
for (int i=lines;(i > 0) && (i<new_lines+1);i++)
|
|
lineProperties[i] = LINE_DEFAULT;
|
|
|
|
clearSelection();
|
|
|
|
delete[] screenLines;
|
|
screenLines = newScreenLines;
|
|
|
|
lines = new_lines;
|
|
columns = new_columns;
|
|
cuX = qMin(cuX,columns-1);
|
|
cuY = qMin(cuY,lines-1);
|
|
|
|
// FIXME: try to keep values, evtl.
|
|
_topMargin=0;
|
|
_bottomMargin=lines-1;
|
|
initTabStops();
|
|
clearSelection();
|
|
}
|
|
|
|
void Screen::setDefaultMargins()
|
|
{
|
|
_topMargin = 0;
|
|
_bottomMargin = lines-1;
|
|
}
|
|
|
|
|
|
/*
|
|
Clarifying rendition here and in the display.
|
|
|
|
currently, the display's color table is
|
|
0 1 2 .. 9 10 .. 17
|
|
dft_fg, dft_bg, dim 0..7, intensive 0..7
|
|
|
|
currentForeground, currentBackground contain values 0..8;
|
|
- 0 = default color
|
|
- 1..8 = ansi specified color
|
|
|
|
re_fg, re_bg contain values 0..17
|
|
due to the TerminalDisplay's color table
|
|
|
|
rendition attributes are
|
|
|
|
attr widget screen
|
|
-------------- ------ ------
|
|
RE_UNDERLINE XX XX affects foreground only
|
|
RE_BLINK XX XX affects foreground only
|
|
RE_BOLD XX XX affects foreground only
|
|
RE_REVERSE -- XX
|
|
RE_TRANSPARENT XX -- affects background only
|
|
RE_INTENSIVE XX -- affects foreground only
|
|
|
|
Note that RE_BOLD is used in both widget
|
|
and screen rendition. Since xterm/vt102
|
|
is to poor to distinguish between bold
|
|
(which is a font attribute) and intensive
|
|
(which is a color attribute), we translate
|
|
this and RE_BOLD in falls eventually appart
|
|
into RE_BOLD and RE_INTENSIVE.
|
|
*/
|
|
|
|
void Screen::reverseRendition(Character& p) const
|
|
{
|
|
CharacterColor f = p.foregroundColor;
|
|
CharacterColor b = p.backgroundColor;
|
|
|
|
p.foregroundColor = b;
|
|
p.backgroundColor = f; //p->r &= ~RE_TRANSPARENT;
|
|
}
|
|
|
|
void Screen::updateEffectiveRendition()
|
|
{
|
|
effectiveRendition = currentRendition;
|
|
if (currentRendition & RE_REVERSE)
|
|
{
|
|
effectiveForeground = currentBackground;
|
|
effectiveBackground = currentForeground;
|
|
}
|
|
else
|
|
{
|
|
effectiveForeground = currentForeground;
|
|
effectiveBackground = currentBackground;
|
|
}
|
|
|
|
if (currentRendition & RE_BOLD)
|
|
effectiveForeground.setIntensive();
|
|
}
|
|
|
|
void Screen::copyFromHistory(Character* dest, int startLine, int count) const
|
|
{
|
|
Q_ASSERT( startLine >= 0 && count > 0 && startLine + count <= history->getLines() );
|
|
|
|
for (int line = startLine; line < startLine + count; line++)
|
|
{
|
|
const int length = qMin(columns,history->getLineLen(line));
|
|
const int destLineOffset = (line-startLine)*columns;
|
|
|
|
history->getCells(line,0,length,dest + destLineOffset);
|
|
|
|
for (int column = length; column < columns; column++)
|
|
dest[destLineOffset+column] = defaultChar;
|
|
|
|
// invert selected text
|
|
if (selBegin !=-1)
|
|
{
|
|
for (int column = 0; column < columns; column++)
|
|
{
|
|
if (isSelected(column,line))
|
|
{
|
|
reverseRendition(dest[destLineOffset + column]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void Screen::copyFromScreen(Character* dest , int startLine , int count) const
|
|
{
|
|
Q_ASSERT( startLine >= 0 && count > 0 && startLine + count <= lines );
|
|
|
|
for (int line = startLine; line < (startLine+count) ; line++)
|
|
{
|
|
int srcLineStartIndex = line*columns;
|
|
int destLineStartIndex = (line-startLine)*columns;
|
|
|
|
for (int column = 0; column < columns; column++)
|
|
{
|
|
int srcIndex = srcLineStartIndex + column;
|
|
int destIndex = destLineStartIndex + column;
|
|
|
|
dest[destIndex] = screenLines[srcIndex/columns].value(srcIndex%columns,defaultChar);
|
|
|
|
// invert selected text
|
|
if (selBegin != -1 && isSelected(column,line + history->getLines()))
|
|
reverseRendition(dest[destIndex]);
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
void Screen::getImage( Character* dest, int size, int startLine, int endLine ) const
|
|
{
|
|
Q_ASSERT( startLine >= 0 );
|
|
Q_ASSERT( endLine >= startLine && endLine < history->getLines() + lines );
|
|
|
|
const int mergedLines = endLine - startLine + 1;
|
|
|
|
Q_ASSERT( size >= mergedLines * columns );
|
|
Q_UNUSED( size );
|
|
|
|
const int linesInHistoryBuffer = qBound(0,history->getLines()-startLine,mergedLines);
|
|
const int linesInScreenBuffer = mergedLines - linesInHistoryBuffer;
|
|
|
|
// copy lines from history buffer
|
|
if (linesInHistoryBuffer > 0)
|
|
copyFromHistory(dest,startLine,linesInHistoryBuffer);
|
|
|
|
// copy lines from screen buffer
|
|
if (linesInScreenBuffer > 0)
|
|
copyFromScreen(dest + linesInHistoryBuffer*columns,
|
|
startLine + linesInHistoryBuffer - history->getLines(),
|
|
linesInScreenBuffer);
|
|
|
|
// invert display when in screen mode
|
|
if (getMode(MODE_Screen))
|
|
{
|
|
for (int i = 0; i < mergedLines*columns; i++)
|
|
reverseRendition(dest[i]); // for reverse display
|
|
}
|
|
|
|
// mark the character at the current cursor position
|
|
int cursorIndex = loc(cuX, cuY + linesInHistoryBuffer);
|
|
if(getMode(MODE_Cursor) && cursorIndex < columns*mergedLines)
|
|
dest[cursorIndex].rendition |= RE_CURSOR;
|
|
}
|
|
|
|
QVector<LineProperty> Screen::getLineProperties( int startLine , int endLine ) const
|
|
{
|
|
Q_ASSERT( startLine >= 0 );
|
|
Q_ASSERT( endLine >= startLine && endLine < history->getLines() + lines );
|
|
|
|
const int mergedLines = endLine-startLine+1;
|
|
const int linesInHistory = qBound(0,history->getLines()-startLine,mergedLines);
|
|
const int linesInScreen = mergedLines - linesInHistory;
|
|
|
|
QVector<LineProperty> result(mergedLines);
|
|
int index = 0;
|
|
|
|
// copy properties for lines in history
|
|
for (int line = startLine; line < startLine + linesInHistory; line++)
|
|
{
|
|
//TODO Support for line properties other than wrapped lines
|
|
if (history->isWrappedLine(line))
|
|
{
|
|
result[index] = (LineProperty)(result[index] | LINE_WRAPPED);
|
|
}
|
|
index++;
|
|
}
|
|
|
|
// copy properties for lines in screen buffer
|
|
const int firstScreenLine = startLine + linesInHistory - history->getLines();
|
|
for (int line = firstScreenLine; line < firstScreenLine+linesInScreen; line++)
|
|
{
|
|
result[index]=lineProperties[line];
|
|
index++;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
void Screen::reset(bool clearScreen)
|
|
{
|
|
setMode(MODE_Wrap ); saveMode(MODE_Wrap ); // wrap at end of margin
|
|
resetMode(MODE_Origin); saveMode(MODE_Origin); // position refere to [1,1]
|
|
resetMode(MODE_Insert); saveMode(MODE_Insert); // overstroke
|
|
setMode(MODE_Cursor); // cursor visible
|
|
resetMode(MODE_Screen); // screen not inverse
|
|
resetMode(MODE_NewLine);
|
|
|
|
_topMargin=0;
|
|
_bottomMargin=lines-1;
|
|
|
|
setDefaultRendition();
|
|
saveCursor();
|
|
|
|
if ( clearScreen )
|
|
clear();
|
|
}
|
|
|
|
void Screen::clear()
|
|
{
|
|
clearEntireScreen();
|
|
home();
|
|
}
|
|
|
|
void Screen::backspace()
|
|
{
|
|
cuX = qMin(columns-1,cuX); // nowrap!
|
|
cuX = qMax(0,cuX-1);
|
|
|
|
if (screenLines[cuY].size() < cuX+1)
|
|
screenLines[cuY].resize(cuX+1);
|
|
|
|
if (BS_CLEARS)
|
|
screenLines[cuY][cuX].character = ' ';
|
|
}
|
|
|
|
void Screen::tab(int n)
|
|
{
|
|
// note that TAB is a format effector (does not write ' ');
|
|
if (n == 0) n = 1;
|
|
while((n > 0) && (cuX < columns-1))
|
|
{
|
|
cursorRight(1);
|
|
while((cuX < columns-1) && !tabStops[cuX])
|
|
cursorRight(1);
|
|
n--;
|
|
}
|
|
}
|
|
|
|
void Screen::backtab(int n)
|
|
{
|
|
// note that TAB is a format effector (does not write ' ');
|
|
if (n == 0) n = 1;
|
|
while((n > 0) && (cuX > 0))
|
|
{
|
|
cursorLeft(1); while((cuX > 0) && !tabStops[cuX]) cursorLeft(1);
|
|
n--;
|
|
}
|
|
}
|
|
|
|
void Screen::clearTabStops()
|
|
{
|
|
for (int i = 0; i < columns; i++) tabStops[i] = false;
|
|
}
|
|
|
|
void Screen::changeTabStop(bool set)
|
|
{
|
|
if (cuX >= columns) return;
|
|
tabStops[cuX] = set;
|
|
}
|
|
|
|
void Screen::initTabStops()
|
|
{
|
|
tabStops.resize(columns);
|
|
|
|
// Arrg! The 1st tabstop has to be one longer than the other.
|
|
// i.e. the kids start counting from 0 instead of 1.
|
|
// Other programs might behave correctly. Be aware.
|
|
for (int i = 0; i < columns; i++)
|
|
tabStops[i] = (i%8 == 0 && i != 0);
|
|
}
|
|
|
|
void Screen::newLine()
|
|
{
|
|
if (getMode(MODE_NewLine))
|
|
toStartOfLine();
|
|
index();
|
|
}
|
|
|
|
void Screen::checkSelection(int from, int to)
|
|
{
|
|
if (selBegin == -1)
|
|
return;
|
|
int scr_TL = loc(0, history->getLines());
|
|
//Clear entire selection if it overlaps region [from, to]
|
|
if ( (selBottomRight >= (from+scr_TL)) && (selTopLeft <= (to+scr_TL)) )
|
|
clearSelection();
|
|
}
|
|
|
|
void Screen::displayCharacter(wchar_t c)
|
|
{
|
|
// Note that VT100 does wrapping BEFORE putting the character.
|
|
// This has impact on the assumption of valid cursor positions.
|
|
// We indicate the fact that a newline has to be triggered by
|
|
// putting the cursor one right to the last column of the screen.
|
|
|
|
int w = konsole_wcwidth(c);
|
|
if (w <= 0)
|
|
return;
|
|
|
|
if (cuX+w > columns) {
|
|
if (getMode(MODE_Wrap)) {
|
|
lineProperties[cuY] = (LineProperty)(lineProperties[cuY] | LINE_WRAPPED);
|
|
nextLine();
|
|
}
|
|
else
|
|
cuX = columns-w;
|
|
}
|
|
|
|
// ensure current line vector has enough elements
|
|
int size = screenLines[cuY].size();
|
|
if (size < cuX+w)
|
|
{
|
|
screenLines[cuY].resize(cuX+w);
|
|
}
|
|
|
|
if (getMode(MODE_Insert)) insertChars(w);
|
|
|
|
lastPos = loc(cuX,cuY);
|
|
|
|
// check if selection is still valid.
|
|
checkSelection(lastPos, lastPos);
|
|
|
|
Character& currentChar = screenLines[cuY][cuX];
|
|
|
|
currentChar.character = c;
|
|
currentChar.foregroundColor = effectiveForeground;
|
|
currentChar.backgroundColor = effectiveBackground;
|
|
currentChar.rendition = effectiveRendition;
|
|
|
|
lastDrawnChar = c;
|
|
|
|
int i = 0;
|
|
int newCursorX = cuX + w--;
|
|
while(w)
|
|
{
|
|
i++;
|
|
|
|
if ( screenLines[cuY].size() < cuX + i + 1 )
|
|
screenLines[cuY].resize(cuX+i+1);
|
|
|
|
Character& ch = screenLines[cuY][cuX + i];
|
|
ch.character = 0;
|
|
ch.foregroundColor = effectiveForeground;
|
|
ch.backgroundColor = effectiveBackground;
|
|
ch.rendition = effectiveRendition;
|
|
|
|
w--;
|
|
}
|
|
cuX = newCursorX;
|
|
}
|
|
|
|
void Screen::compose(const QString& /*compose*/)
|
|
{
|
|
Q_ASSERT( 0 /*Not implemented yet*/ );
|
|
|
|
/* if (lastPos == -1)
|
|
return;
|
|
|
|
QChar c(image[lastPos].character);
|
|
compose.prepend(c);
|
|
//compose.compose(); ### FIXME!
|
|
image[lastPos].character = compose[0].unicode();*/
|
|
}
|
|
|
|
int Screen::scrolledLines() const
|
|
{
|
|
return _scrolledLines;
|
|
}
|
|
int Screen::droppedLines() const
|
|
{
|
|
return _droppedLines;
|
|
}
|
|
void Screen::resetDroppedLines()
|
|
{
|
|
_droppedLines = 0;
|
|
}
|
|
void Screen::resetScrolledLines()
|
|
{
|
|
_scrolledLines = 0;
|
|
}
|
|
|
|
void Screen::scrollUp(int n)
|
|
{
|
|
if (n == 0) n = 1; // Default
|
|
if (_topMargin == 0) addHistLine(); // history.history
|
|
scrollUp(_topMargin, n);
|
|
}
|
|
|
|
QRect Screen::lastScrolledRegion() const
|
|
{
|
|
return _lastScrolledRegion;
|
|
}
|
|
|
|
void Screen::scrollUp(int from, int n)
|
|
{
|
|
if (n <= 0)
|
|
return;
|
|
if (from > _bottomMargin)
|
|
return;
|
|
if (from + n > _bottomMargin)
|
|
n = _bottomMargin + 1 - from;
|
|
|
|
_scrolledLines -= n;
|
|
_lastScrolledRegion = QRect(0,_topMargin,columns-1,(_bottomMargin-_topMargin));
|
|
|
|
//FIXME: make sure `topMargin', `bottomMargin', `from', `n' is in bounds.
|
|
moveImage(loc(0,from),loc(0,from+n),loc(columns,_bottomMargin));
|
|
clearImage(loc(0,_bottomMargin-n+1),loc(columns-1,_bottomMargin),' ');
|
|
}
|
|
|
|
void Screen::scrollDown(int n)
|
|
{
|
|
if (n == 0) n = 1; // Default
|
|
scrollDown(_topMargin, n);
|
|
}
|
|
|
|
void Screen::scrollDown(int from, int n)
|
|
{
|
|
_scrolledLines += n;
|
|
|
|
//FIXME: make sure `topMargin', `bottomMargin', `from', `n' is in bounds.
|
|
if (n <= 0)
|
|
return;
|
|
if (from > _bottomMargin)
|
|
return;
|
|
if (from + n > _bottomMargin)
|
|
n = _bottomMargin - from;
|
|
moveImage(loc(0,from+n),loc(0,from),loc(columns-1,_bottomMargin-n));
|
|
clearImage(loc(0,from),loc(columns-1,from+n-1),' ');
|
|
}
|
|
|
|
void Screen::setCursorYX(int y, int x)
|
|
{
|
|
setCursorY(y); setCursorX(x);
|
|
}
|
|
|
|
void Screen::setCursorX(int x)
|
|
{
|
|
if (x == 0) x = 1; // Default
|
|
x -= 1; // Adjust
|
|
cuX = qMax(0,qMin(columns-1, x));
|
|
}
|
|
|
|
void Screen::setCursorY(int y)
|
|
{
|
|
if (y == 0) y = 1; // Default
|
|
y -= 1; // Adjust
|
|
cuY = qMax(0,qMin(lines -1, y + (getMode(MODE_Origin) ? _topMargin : 0) ));
|
|
}
|
|
|
|
void Screen::home()
|
|
{
|
|
cuX = 0;
|
|
cuY = 0;
|
|
}
|
|
|
|
void Screen::toStartOfLine()
|
|
{
|
|
cuX = 0;
|
|
}
|
|
|
|
int Screen::getCursorX() const
|
|
{
|
|
return cuX;
|
|
}
|
|
|
|
int Screen::getCursorY() const
|
|
{
|
|
return cuY;
|
|
}
|
|
|
|
void Screen::clearImage(int loca, int loce, char c)
|
|
{
|
|
int scr_TL=loc(0,history->getLines());
|
|
//FIXME: check positions
|
|
|
|
//Clear entire selection if it overlaps region to be moved...
|
|
if ( (selBottomRight > (loca+scr_TL) )&&(selTopLeft < (loce+scr_TL)) )
|
|
{
|
|
clearSelection();
|
|
}
|
|
|
|
int topLine = loca/columns;
|
|
int bottomLine = loce/columns;
|
|
|
|
Character clearCh(c,currentForeground,currentBackground,DEFAULT_RENDITION);
|
|
|
|
//if the character being used to clear the area is the same as the
|
|
//default character, the affected lines can simply be shrunk.
|
|
bool isDefaultCh = (clearCh == Character());
|
|
|
|
for (int y=topLine;y<=bottomLine;y++)
|
|
{
|
|
lineProperties[y] = 0;
|
|
|
|
int endCol = ( y == bottomLine) ? loce%columns : columns-1;
|
|
int startCol = ( y == topLine ) ? loca%columns : 0;
|
|
|
|
QVector<Character>& line = screenLines[y];
|
|
|
|
if ( isDefaultCh && endCol == columns-1 )
|
|
{
|
|
line.resize(startCol);
|
|
}
|
|
else
|
|
{
|
|
if (line.size() < endCol + 1)
|
|
line.resize(endCol+1);
|
|
|
|
Character* data = line.data();
|
|
for (int i=startCol;i<=endCol;i++)
|
|
data[i]=clearCh;
|
|
}
|
|
}
|
|
}
|
|
|
|
void Screen::moveImage(int dest, int sourceBegin, int sourceEnd)
|
|
{
|
|
Q_ASSERT( sourceBegin <= sourceEnd );
|
|
|
|
int lines=(sourceEnd-sourceBegin)/columns;
|
|
|
|
//move screen image and line properties:
|
|
//the source and destination areas of the image may overlap,
|
|
//so it matters that we do the copy in the right order -
|
|
//forwards if dest < sourceBegin or backwards otherwise.
|
|
//(search the web for 'memmove implementation' for details)
|
|
if (dest < sourceBegin)
|
|
{
|
|
for (int i=0;i<=lines;i++)
|
|
{
|
|
screenLines[ (dest/columns)+i ] = screenLines[ (sourceBegin/columns)+i ];
|
|
lineProperties[(dest/columns)+i]=lineProperties[(sourceBegin/columns)+i];
|
|
}
|
|
}
|
|
else
|
|
{
|
|
for (int i=lines;i>=0;i--)
|
|
{
|
|
screenLines[ (dest/columns)+i ] = screenLines[ (sourceBegin/columns)+i ];
|
|
lineProperties[(dest/columns)+i]=lineProperties[(sourceBegin/columns)+i];
|
|
}
|
|
}
|
|
|
|
if (lastPos != -1)
|
|
{
|
|
int diff = dest - sourceBegin; // Scroll by this amount
|
|
lastPos += diff;
|
|
if ((lastPos < 0) || (lastPos >= (lines*columns)))
|
|
lastPos = -1;
|
|
}
|
|
|
|
// Adjust selection to follow scroll.
|
|
if (selBegin != -1)
|
|
{
|
|
bool beginIsTL = (selBegin == selTopLeft);
|
|
int diff = dest - sourceBegin; // Scroll by this amount
|
|
int scr_TL=loc(0,history->getLines());
|
|
int srca = sourceBegin+scr_TL; // Translate index from screen to global
|
|
int srce = sourceEnd+scr_TL; // Translate index from screen to global
|
|
int desta = srca+diff;
|
|
int deste = srce+diff;
|
|
|
|
if ((selTopLeft >= srca) && (selTopLeft <= srce))
|
|
selTopLeft += diff;
|
|
else if ((selTopLeft >= desta) && (selTopLeft <= deste))
|
|
selBottomRight = -1; // Clear selection (see below)
|
|
|
|
if ((selBottomRight >= srca) && (selBottomRight <= srce))
|
|
selBottomRight += diff;
|
|
else if ((selBottomRight >= desta) && (selBottomRight <= deste))
|
|
selBottomRight = -1; // Clear selection (see below)
|
|
|
|
if (selBottomRight < 0)
|
|
{
|
|
clearSelection();
|
|
}
|
|
else
|
|
{
|
|
if (selTopLeft < 0)
|
|
selTopLeft = 0;
|
|
}
|
|
|
|
if (beginIsTL)
|
|
selBegin = selTopLeft;
|
|
else
|
|
selBegin = selBottomRight;
|
|
}
|
|
}
|
|
|
|
void Screen::clearToEndOfScreen()
|
|
{
|
|
clearImage(loc(cuX,cuY),loc(columns-1,lines-1),' ');
|
|
}
|
|
|
|
void Screen::clearToBeginOfScreen()
|
|
{
|
|
clearImage(loc(0,0),loc(cuX,cuY),' ');
|
|
}
|
|
|
|
void Screen::clearEntireScreen()
|
|
{
|
|
// Add entire screen to history
|
|
for (int i = 0; i < (lines-1); i++)
|
|
{
|
|
addHistLine(); scrollUp(0,1);
|
|
}
|
|
|
|
clearImage(loc(0,0),loc(columns-1,lines-1),' ');
|
|
}
|
|
|
|
/*! fill screen with 'E'
|
|
This is to aid screen alignment
|
|
*/
|
|
|
|
void Screen::helpAlign()
|
|
{
|
|
clearImage(loc(0,0),loc(columns-1,lines-1),'E');
|
|
}
|
|
|
|
void Screen::clearToEndOfLine()
|
|
{
|
|
clearImage(loc(cuX,cuY),loc(columns-1,cuY),' ');
|
|
}
|
|
|
|
void Screen::clearToBeginOfLine()
|
|
{
|
|
clearImage(loc(0,cuY),loc(cuX,cuY),' ');
|
|
}
|
|
|
|
void Screen::clearEntireLine()
|
|
{
|
|
clearImage(loc(0,cuY),loc(columns-1,cuY),' ');
|
|
}
|
|
|
|
void Screen::setRendition(int re)
|
|
{
|
|
currentRendition |= re;
|
|
updateEffectiveRendition();
|
|
}
|
|
|
|
void Screen::resetRendition(int re)
|
|
{
|
|
currentRendition &= ~re;
|
|
updateEffectiveRendition();
|
|
}
|
|
|
|
void Screen::setDefaultRendition()
|
|
{
|
|
setForeColor(COLOR_SPACE_DEFAULT,DEFAULT_FORE_COLOR);
|
|
setBackColor(COLOR_SPACE_DEFAULT,DEFAULT_BACK_COLOR);
|
|
currentRendition = DEFAULT_RENDITION;
|
|
updateEffectiveRendition();
|
|
}
|
|
|
|
void Screen::setForeColor(int space, int color)
|
|
{
|
|
currentForeground = CharacterColor(space, color);
|
|
|
|
if ( currentForeground.isValid() )
|
|
updateEffectiveRendition();
|
|
else
|
|
setForeColor(COLOR_SPACE_DEFAULT,DEFAULT_FORE_COLOR);
|
|
}
|
|
|
|
void Screen::setBackColor(int space, int color)
|
|
{
|
|
currentBackground = CharacterColor(space, color);
|
|
|
|
if ( currentBackground.isValid() )
|
|
updateEffectiveRendition();
|
|
else
|
|
setBackColor(COLOR_SPACE_DEFAULT,DEFAULT_BACK_COLOR);
|
|
}
|
|
|
|
void Screen::clearSelection()
|
|
{
|
|
selBottomRight = -1;
|
|
selTopLeft = -1;
|
|
selBegin = -1;
|
|
}
|
|
|
|
void Screen::getSelectionStart(int& column , int& line) const
|
|
{
|
|
if ( selTopLeft != -1 )
|
|
{
|
|
column = selTopLeft % columns;
|
|
line = selTopLeft / columns;
|
|
}
|
|
else
|
|
{
|
|
column = cuX + getHistLines();
|
|
line = cuY + getHistLines();
|
|
}
|
|
}
|
|
void Screen::getSelectionEnd(int& column , int& line) const
|
|
{
|
|
if ( selBottomRight != -1 )
|
|
{
|
|
column = selBottomRight % columns;
|
|
line = selBottomRight / columns;
|
|
}
|
|
else
|
|
{
|
|
column = cuX + getHistLines();
|
|
line = cuY + getHistLines();
|
|
}
|
|
}
|
|
void Screen::setSelectionStart(const int x, const int y, const bool mode)
|
|
{
|
|
selBegin = loc(x,y);
|
|
/* FIXME, HACK to correct for x too far to the right... */
|
|
if (x == columns) selBegin--;
|
|
|
|
selBottomRight = selBegin;
|
|
selTopLeft = selBegin;
|
|
blockSelectionMode = mode;
|
|
}
|
|
|
|
void Screen::setSelectionEnd( const int x, const int y)
|
|
{
|
|
if (selBegin == -1)
|
|
return;
|
|
|
|
int endPos = loc(x,y);
|
|
|
|
if (endPos < selBegin)
|
|
{
|
|
selTopLeft = endPos;
|
|
selBottomRight = selBegin;
|
|
}
|
|
else
|
|
{
|
|
/* FIXME, HACK to correct for x too far to the right... */
|
|
if (x == columns)
|
|
endPos--;
|
|
|
|
selTopLeft = selBegin;
|
|
selBottomRight = endPos;
|
|
}
|
|
|
|
// Normalize the selection in column mode
|
|
if (blockSelectionMode)
|
|
{
|
|
int topRow = selTopLeft / columns;
|
|
int topColumn = selTopLeft % columns;
|
|
int bottomRow = selBottomRight / columns;
|
|
int bottomColumn = selBottomRight % columns;
|
|
|
|
selTopLeft = loc(qMin(topColumn,bottomColumn),topRow);
|
|
selBottomRight = loc(qMax(topColumn,bottomColumn),bottomRow);
|
|
}
|
|
}
|
|
|
|
bool Screen::isSelected( const int x,const int y) const
|
|
{
|
|
bool columnInSelection = true;
|
|
if (blockSelectionMode)
|
|
{
|
|
columnInSelection = x >= (selTopLeft % columns) &&
|
|
x <= (selBottomRight % columns);
|
|
}
|
|
|
|
int pos = loc(x,y);
|
|
return pos >= selTopLeft && pos <= selBottomRight && columnInSelection;
|
|
}
|
|
|
|
QString Screen::selectedText(bool preserveLineBreaks) const
|
|
{
|
|
QString result;
|
|
QTextStream stream(&result, QIODevice::ReadWrite);
|
|
|
|
PlainTextDecoder decoder;
|
|
decoder.begin(&stream);
|
|
writeSelectionToStream(&decoder , preserveLineBreaks);
|
|
decoder.end();
|
|
|
|
return result;
|
|
}
|
|
|
|
bool Screen::isSelectionValid() const
|
|
{
|
|
return selTopLeft >= 0 && selBottomRight >= 0;
|
|
}
|
|
|
|
void Screen::writeSelectionToStream(TerminalCharacterDecoder* decoder ,
|
|
bool preserveLineBreaks) const
|
|
{
|
|
if (!isSelectionValid())
|
|
return;
|
|
writeToStream(decoder,selTopLeft,selBottomRight,preserveLineBreaks);
|
|
}
|
|
|
|
void Screen::writeToStream(TerminalCharacterDecoder* decoder,
|
|
int startIndex, int endIndex,
|
|
bool preserveLineBreaks) const
|
|
{
|
|
int top = startIndex / columns;
|
|
int left = startIndex % columns;
|
|
|
|
int bottom = endIndex / columns;
|
|
int right = endIndex % columns;
|
|
|
|
Q_ASSERT( top >= 0 && left >= 0 && bottom >= 0 && right >= 0 );
|
|
|
|
for (int y=top;y<=bottom;y++)
|
|
{
|
|
int start = 0;
|
|
if ( y == top || blockSelectionMode ) start = left;
|
|
|
|
int count = -1;
|
|
if ( y == bottom || blockSelectionMode ) count = right - start + 1;
|
|
|
|
const bool appendNewLine = ( y != bottom );
|
|
int copied = copyLineToStream( y,
|
|
start,
|
|
count,
|
|
decoder,
|
|
appendNewLine,
|
|
preserveLineBreaks );
|
|
|
|
// if the selection goes beyond the end of the last line then
|
|
// append a new line character.
|
|
//
|
|
// this makes it possible to 'select' a trailing new line character after
|
|
// the text on a line.
|
|
if ( y == bottom &&
|
|
copied < count )
|
|
{
|
|
Character newLineChar('\n');
|
|
decoder->decodeLine(&newLineChar,1,0);
|
|
}
|
|
}
|
|
}
|
|
|
|
int Screen::copyLineToStream(int line ,
|
|
int start,
|
|
int count,
|
|
TerminalCharacterDecoder* decoder,
|
|
bool appendNewLine,
|
|
bool preserveLineBreaks) const
|
|
{
|
|
//buffer to hold characters for decoding
|
|
//the buffer is static to avoid initialising every
|
|
//element on each call to copyLineToStream
|
|
//(which is unnecessary since all elements will be overwritten anyway)
|
|
static const int MAX_CHARS = 1024;
|
|
static Character characterBuffer[MAX_CHARS];
|
|
|
|
Q_ASSERT( count < MAX_CHARS );
|
|
|
|
LineProperty currentLineProperties = 0;
|
|
|
|
//determine if the line is in the history buffer or the screen image
|
|
if (line < history->getLines())
|
|
{
|
|
const int lineLength = history->getLineLen(line);
|
|
|
|
// ensure that start position is before end of line
|
|
start = qMin(start,qMax(0,lineLength-1));
|
|
|
|
// retrieve line from history buffer. It is assumed
|
|
// that the history buffer does not store trailing white space
|
|
// at the end of the line, so it does not need to be trimmed here
|
|
if (count == -1)
|
|
{
|
|
count = lineLength-start;
|
|
}
|
|
else
|
|
{
|
|
count = qMin(start+count,lineLength)-start;
|
|
}
|
|
|
|
// safety checks
|
|
Q_ASSERT( start >= 0 );
|
|
Q_ASSERT( count >= 0 );
|
|
Q_ASSERT( (start+count) <= history->getLineLen(line) );
|
|
|
|
history->getCells(line,start,count,characterBuffer);
|
|
|
|
if ( history->isWrappedLine(line) )
|
|
currentLineProperties |= LINE_WRAPPED;
|
|
}
|
|
else
|
|
{
|
|
if ( count == -1 )
|
|
count = columns - start;
|
|
|
|
Q_ASSERT( count >= 0 );
|
|
|
|
const int screenLine = line-history->getLines();
|
|
|
|
Character* data = screenLines[screenLine].data();
|
|
int length = screenLines[screenLine].count();
|
|
|
|
//retrieve line from screen image
|
|
for (int i=start;i < qMin(start+count,length);i++)
|
|
{
|
|
characterBuffer[i-start] = data[i];
|
|
}
|
|
|
|
// count cannot be any greater than length
|
|
count = qBound(0,count,length-start);
|
|
|
|
Q_ASSERT( screenLine < lineProperties.count() );
|
|
currentLineProperties |= lineProperties[screenLine];
|
|
}
|
|
|
|
// add new line character at end
|
|
const bool omitLineBreak = (currentLineProperties & LINE_WRAPPED) ||
|
|
!preserveLineBreaks;
|
|
|
|
if ( !omitLineBreak && appendNewLine && (count+1 < MAX_CHARS) )
|
|
{
|
|
characterBuffer[count] = '\n';
|
|
count++;
|
|
}
|
|
|
|
//decode line and write to text stream
|
|
decoder->decodeLine( (Character*) characterBuffer ,
|
|
count, currentLineProperties );
|
|
|
|
return count;
|
|
}
|
|
|
|
void Screen::writeLinesToStream(TerminalCharacterDecoder* decoder, int fromLine, int toLine) const
|
|
{
|
|
writeToStream(decoder,loc(0,fromLine),loc(columns-1,toLine));
|
|
}
|
|
|
|
void Screen::addHistLine()
|
|
{
|
|
// add line to history buffer
|
|
// we have to take care about scrolling, too...
|
|
|
|
if (hasScroll())
|
|
{
|
|
int oldHistLines = history->getLines();
|
|
|
|
history->addCellsVector(screenLines[0]);
|
|
history->addLine( lineProperties[0] & LINE_WRAPPED );
|
|
|
|
int newHistLines = history->getLines();
|
|
|
|
bool beginIsTL = (selBegin == selTopLeft);
|
|
|
|
// If the history is full, increment the count
|
|
// of dropped lines
|
|
if ( newHistLines == oldHistLines )
|
|
_droppedLines++;
|
|
|
|
// Adjust selection for the new point of reference
|
|
if (newHistLines > oldHistLines)
|
|
{
|
|
if (selBegin != -1)
|
|
{
|
|
selTopLeft += columns;
|
|
selBottomRight += columns;
|
|
}
|
|
}
|
|
|
|
if (selBegin != -1)
|
|
{
|
|
// Scroll selection in history up
|
|
int top_BR = loc(0, 1+newHistLines);
|
|
|
|
if (selTopLeft < top_BR)
|
|
selTopLeft -= columns;
|
|
|
|
if (selBottomRight < top_BR)
|
|
selBottomRight -= columns;
|
|
|
|
if (selBottomRight < 0)
|
|
clearSelection();
|
|
else
|
|
{
|
|
if (selTopLeft < 0)
|
|
selTopLeft = 0;
|
|
}
|
|
|
|
if (beginIsTL)
|
|
selBegin = selTopLeft;
|
|
else
|
|
selBegin = selBottomRight;
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
int Screen::getHistLines() const
|
|
{
|
|
return history->getLines();
|
|
}
|
|
|
|
void Screen::setScroll(const HistoryType& t , bool copyPreviousScroll)
|
|
{
|
|
clearSelection();
|
|
|
|
if ( copyPreviousScroll )
|
|
history = t.scroll(history);
|
|
else
|
|
{
|
|
HistoryScroll* oldScroll = history;
|
|
history = t.scroll(0);
|
|
delete oldScroll;
|
|
}
|
|
}
|
|
|
|
bool Screen::hasScroll() const
|
|
{
|
|
return history->hasScroll();
|
|
}
|
|
|
|
const HistoryType& Screen::getScroll() const
|
|
{
|
|
return history->getType();
|
|
}
|
|
|
|
void Screen::setLineProperty(LineProperty property , bool enable)
|
|
{
|
|
if ( enable )
|
|
lineProperties[cuY] = (LineProperty)(lineProperties[cuY] | property);
|
|
else
|
|
lineProperties[cuY] = (LineProperty)(lineProperties[cuY] & ~property);
|
|
}
|
|
void Screen::fillWithDefaultChar(Character* dest, int count)
|
|
{
|
|
for (int i=0;i<count;i++)
|
|
dest[i] = defaultChar;
|
|
}
|