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286 lines
6.8 KiB
286 lines
6.8 KiB
/*
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This file is part of Konsole, an X terminal.
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Copyright (C) 1997,1998 by Lars Doelle <lars.doelle@on-line.de>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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*/
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#ifndef TESCREEN_H
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#define TESCREEN_H
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#include "TECommon.h"
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#include "TEHistory.h"
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#define MODE_Origin 0
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#define MODE_Wrap 1
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#define MODE_Insert 2
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#define MODE_Screen 3
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#define MODE_Cursor 4
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#define MODE_NewLine 5
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#define MODES_SCREEN 6
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/*!
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*/
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struct ScreenParm
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{
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int mode[MODES_SCREEN];
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};
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class TEScreen
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{
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public:
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TEScreen(int lines, int columns);
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~TEScreen();
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public: // these are all `Screen' operations
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//
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// VT100/2 Operations ------------------
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//
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// Cursor Movement
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//
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void cursorUp (int n);
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void cursorDown (int n);
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void cursorLeft (int n);
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void cursorRight (int n);
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void cursorNextLine(int n);
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void cursorPrevLine(int n);
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void setCursorY (int y);
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void setCursorX (int x);
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void setCursorYX (int y, int x);
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void setMargins (int t, int b);
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//
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// Cursor Movement with Scrolling
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//
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void NewLine ();
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void NextLine ();
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void index ();
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void reverseIndex();
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//
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// Scrolling
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//
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void scrollUp(int n);
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void scrollDown(int n);
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//
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void Return ();
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void BackSpace ();
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void Tabulate (int n = 1);
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void backTabulate(int n);
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//
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// Editing
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//
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void eraseChars (int n);
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void deleteChars (int n);
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void insertChars (int n);
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void repeatChars (int n);
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void deleteLines (int n);
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void insertLines (int n);
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//
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// -------------------------------------
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//
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void clearTabStops();
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void changeTabStop(bool set);
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//
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void resetMode (int n);
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void setMode (int n);
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void saveMode (int n);
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void restoreMode (int n);
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//
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void saveCursor ();
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void restoreCursor();
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//
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// -------------------------------------
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//
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void clearEntireScreen();
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void clearToEndOfScreen();
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void clearToBeginOfScreen();
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//
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void clearEntireLine();
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void clearToEndOfLine();
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void clearToBeginOfLine();
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//
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void helpAlign ();
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//
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// -------------------------------------
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//
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void setRendition (int rendition);
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void resetRendition(int rendition);
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//
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void setForeColor (int space, int color);
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void setBackColor (int space, int color);
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//
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void setDefaultRendition();
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//
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// -------------------------------------
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//
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bool getMode (int n);
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//
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// only for report cursor position
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//
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int getCursorX();
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int getCursorY();
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//
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// -------------------------------------
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//
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void clear();
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void home();
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void reset();
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// Show character
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void ShowCharacter(unsigned short c);
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// Do composition with last shown character
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void compose(TQString compose);
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//
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void resizeImage(int new_lines, int new_columns);
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//
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ca* getCookedImage();
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TQBitArray getCookedLineWrapped();
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/*! return the number of lines. */
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int getLines() { return lines; }
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/*! return the number of columns. */
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int getColumns() { return columns; }
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/*! set the position of the history cursor. */
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void setHistCursor(int cursor);
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/*! return the position of the history cursor. */
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int getHistCursor();
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int getHistLines ();
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void setScroll(const HistoryType&);
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const HistoryType& getScroll();
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bool hasScroll();
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//
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// Selection
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//
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void setSelBeginXY(const int x, const int y, const bool columnmode);
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void setSelExtentXY(const int x, const int y);
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void clearSelection();
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void setBusySelecting(bool busy) { sel_busy = busy; }
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bool testIsSelected(const int x,const int y);
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TQString getSelText(bool preserve_line_breaks);
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void getSelText(bool preserve_line_breaks, TQTextStream* stream);
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void streamHistory(TQTextStream* stream);
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TQString getHistoryLine(int no);
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void checkSelection(int from, int to);
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private: // helper
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void clearImage(int loca, int loce, char c);
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void moveImage(int dst, int loca, int loce);
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void scrollUp(int from, int i);
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void scrollDown(int from, int i);
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void addHistLine();
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void initTabStops();
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void effectiveRendition();
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void reverseRendition(ca* p);
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/*
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The state of the screen is more complex as one would
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expect first. The screem does really do part of the
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emulation providing state informations in form of modes,
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margins, tabulators, cursor etc.
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Even more unexpected are variables to save and restore
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parts of the state.
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*/
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// screen image ----------------
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int lines;
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int columns;
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ca *image; // [lines][columns]
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TQBitArray line_wrapped; // [lines]
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// history buffer ---------------
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int histCursor; // display position relative to start of the history buffer
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HistoryScroll *hist;
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// cursor location
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int cuX;
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int cuY;
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// cursor color and rendition info
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cacol cu_fg; // foreground
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cacol cu_bg; // background
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UINT8 cu_re; // rendition
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// margins ----------------
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int tmargin; // top margin
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int bmargin; // bottom margin
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// states ----------------
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ScreenParm currParm;
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// ----------------------------
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bool* tabstops;
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// selection -------------------
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int sel_begin; // The first location selected.
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int sel_TL; // TopLeft Location.
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int sel_BR; // Bottom Right Location.
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bool sel_busy; // Busy making a selection.
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bool columnmode; // Column selection mode
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// effective colors and rendition ------------
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cacol ef_fg; // These are derived from
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cacol ef_bg; // the cu_* variables above
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UINT8 ef_re; // to speed up operation
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//
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// save cursor, rendition & states ------------
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//
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// cursor location
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int sa_cuX;
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int sa_cuY;
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// rendition info
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UINT8 sa_cu_re;
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cacol sa_cu_fg;
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cacol sa_cu_bg;
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// last position where we added a character
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int lastPos;
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// used in REP (repeating char)
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unsigned short lastDrawnChar;
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// modes
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ScreenParm saveParm;
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};
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#endif // TESCREEN_H
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