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Diffstat (limited to 'konsole/konsole/TEScreen.h')
| -rw-r--r-- | konsole/konsole/TEScreen.h | 279 |
1 files changed, 279 insertions, 0 deletions
diff --git a/konsole/konsole/TEScreen.h b/konsole/konsole/TEScreen.h new file mode 100644 index 000000000..55cbcb07c --- /dev/null +++ b/konsole/konsole/TEScreen.h @@ -0,0 +1,279 @@ +/* + This file is part of Konsole, an X terminal. + Copyright (C) 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. +*/ + +#ifndef TESCREEN_H +#define TESCREEN_H + +#include "TECommon.h" +#include "TEHistory.h" + +#define MODE_Origin 0 +#define MODE_Wrap 1 +#define MODE_Insert 2 +#define MODE_Screen 3 +#define MODE_Cursor 4 +#define MODE_NewLine 5 +#define MODES_SCREEN 6 + +/*! +*/ +struct ScreenParm +{ + int mode[MODES_SCREEN]; +}; + + +class TEScreen +{ +public: + TEScreen(int lines, int columns); + ~TEScreen(); + +public: // these are all `Screen' operations + // + // VT100/2 Operations ------------------ + // + // Cursor Movement + // + void cursorUp (int n); + void cursorDown (int n); + void cursorLeft (int n); + void cursorRight (int n); + void setCursorY (int y); + void setCursorX (int x); + void setCursorYX (int y, int x); + void setMargins (int t, int b); + // + // Cursor Movement with Scrolling + // + void NewLine (); + void NextLine (); + void index (); + void reverseIndex(); + // + // Scrolling + // + void scrollUp(int n); + void scrollDown(int n); + // + void Return (); + void BackSpace (); + void Tabulate (int n = 1); + void backTabulate(int n); + // + // Editing + // + void eraseChars (int n); + void deleteChars (int n); + void insertChars (int n); + void deleteLines (int n); + void insertLines (int n); + // + // ------------------------------------- + // + void clearTabStops(); + void changeTabStop(bool set); + // + void resetMode (int n); + void setMode (int n); + void saveMode (int n); + void restoreMode (int n); + // + void saveCursor (); + void restoreCursor(); + // + // ------------------------------------- + // + void clearEntireScreen(); + void clearToEndOfScreen(); + void clearToBeginOfScreen(); + // + void clearEntireLine(); + void clearToEndOfLine(); + void clearToBeginOfLine(); + // + void helpAlign (); + // + // ------------------------------------- + // + void setRendition (int rendition); + void resetRendition(int rendition); + // + void setForeColor (int space, int color); + void setBackColor (int space, int color); + // + void setDefaultRendition(); + // + // ------------------------------------- + // + bool getMode (int n); + // + // only for report cursor position + // + int getCursorX(); + int getCursorY(); + // + // ------------------------------------- + // + void clear(); + void home(); + void reset(); + // Show character + void ShowCharacter(unsigned short c); + + // Do composition with last shown character + void compose(QString compose); + + // + void resizeImage(int new_lines, int new_columns); + // + ca* getCookedImage(); + QBitArray getCookedLineWrapped(); + + /*! return the number of lines. */ + int getLines() { return lines; } + /*! return the number of columns. */ + int getColumns() { return columns; } + + /*! set the position of the history cursor. */ + void setHistCursor(int cursor); + /*! return the position of the history cursor. */ + + int getHistCursor(); + int getHistLines (); + void setScroll(const HistoryType&); + const HistoryType& getScroll(); + bool hasScroll(); + + // + // Selection + // + void setSelBeginXY(const int x, const int y, const bool columnmode); + void setSelExtentXY(const int x, const int y); + void clearSelection(); + void setBusySelecting(bool busy) { sel_busy = busy; } + bool testIsSelected(const int x,const int y); + + QString getSelText(bool preserve_line_breaks); + void getSelText(bool preserve_line_breaks, QTextStream* stream); + void streamHistory(QTextStream* stream); + QString getHistoryLine(int no); + + void checkSelection(int from, int to); + +private: // helper + + void clearImage(int loca, int loce, char c); + void moveImage(int dst, int loca, int loce); + + void scrollUp(int from, int i); + void scrollDown(int from, int i); + + void addHistLine(); + + void initTabStops(); + + void effectiveRendition(); + void reverseRendition(ca* p); + + /* + The state of the screen is more complex as one would + expect first. The screem does really do part of the + emulation providing state informations in form of modes, + margins, tabulators, cursor etc. + + Even more unexpected are variables to save and restore + parts of the state. + */ + + // screen image ---------------- + + int lines; + int columns; + ca *image; // [lines][columns] + QBitArray line_wrapped; // [lines] + + // history buffer --------------- + + int histCursor; // display position relative to start of the history buffer + HistoryScroll *hist; + + // cursor location + + int cuX; + int cuY; + + // cursor color and rendition info + + cacol cu_fg; // foreground + cacol cu_bg; // background + UINT8 cu_re; // rendition + + // margins ---------------- + + int tmargin; // top margin + int bmargin; // bottom margin + + // states ---------------- + + ScreenParm currParm; + + // ---------------------------- + + bool* tabstops; + + // selection ------------------- + + int sel_begin; // The first location selected. + int sel_TL; // TopLeft Location. + int sel_BR; // Bottom Right Location. + bool sel_busy; // Busy making a selection. + bool columnmode; // Column selection mode + + // effective colors and rendition ------------ + + cacol ef_fg; // These are derived from + cacol ef_bg; // the cu_* variables above + UINT8 ef_re; // to speed up operation + + // + // save cursor, rendition & states ------------ + // + + // cursor location + + int sa_cuX; + int sa_cuY; + + // rendition info + + UINT8 sa_cu_re; + cacol sa_cu_fg; + cacol sa_cu_bg; + + // last position where we added a character + int lastPos; + + // modes + + ScreenParm saveParm; +}; + +#endif // TESCREEN_H |