move to my github.

1 files changed, 159 insertions, 0 deletions

diff --git a/src/terminal/fqterm_text_line.h b/src/terminal/fqterm_text_line.h
new file mode 100644
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+++ b/src/terminal/fqterm_text_line.h
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+/***************************************************************************
+ *   fqterm, a terminal emulator for both BBS and *nix.                    *
+ *   Copyright (C) 2008 fqterm development group.                          *
+ *                                                                         *
+ *   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 St, Fifth Floor, Boston, MA 02110-1301 USA.               *
+ ***************************************************************************/
+
+#ifndef FQTERM_TEXTLINE_H
+#define FQTERM_TEXTLINE_H
+
+#include <vector>
+
+#include "fqwcwidth.h"
+#include "fqterm.h"
+class QString;
+
+namespace FQTerm {
+/*
+  A text line consists of several characters in a sequence of cells. A
+  character may occupy some cells, e.g. each English letter occupies
+  one cell, while a CJK character needs two.
+
+  This class is used to manipolate a text line, delete/replace
+  characters in a given cell range, insert characters before a cell,
+  and retrieve characters/colors/attributs of a gaven cell range.
+*/
+class FQTermTextLine {
+ public:
+  FQTermTextLine(unsigned max_cell_count);
+  ~FQTermTextLine();
+
+  enum CHARSTATE{NORMAL = 0x00, FIRSTPART = 0x01, SECONDPART = 0x02};
+  // Get the number of used cells.
+  unsigned getWidth() const {return cells_.size();}
+
+  void setMaxCellCount(unsigned max_cell_count);
+  unsigned getMaxCellCount() const { return max_cell_count_; }
+  
+  // Whether this line of text contains blink characters.
+  bool hasBlink() const;
+
+  // Set/get the dirty flag, that indicates which cells have been
+  // modified.
+  void setDirtyFlag(unsigned cell_begin, unsigned cell_end);
+  void safelySetDirtyFlag(unsigned cell_begin, unsigned cell_end);
+  bool getDirtyCells(unsigned &cell_begin, unsigned &cell_end) const;
+  void clearDirtyFlag();
+  void setAllDirty() {setDirtyFlag(0, max_cell_count_);}
+
+  const unsigned char *getColors() const {
+    return cells_.size() == 0 ? NULL : &cell_colors_[0];
+  }
+
+  const unsigned char *getAttributes() const {
+    return cells_.size() == 0 ? NULL : &cell_attrs_[0];
+  }
+
+  // Get plain text in [cell_begin, cell_end).
+  void getPlainText(unsigned cell_begin, unsigned cell_end,
+                    QString &result) const;
+
+  void getAllPlainText(QString &result) const {
+    getPlainText(0, getWidth(), result);
+  }
+  
+  // Get text in cells [cell_begin, cell_end), with color and
+  // attribute in ANSI format.
+  void getAnsiText(unsigned cell_begin, unsigned cell_end,
+                   QString &result,
+                   const char *escape = "\x1b\x1b") const;
+
+  void getAllAnsiText(QString &result, const char* escape = "\x1b\x1b") const {
+    getAnsiText(0, getWidth(), result, escape);
+  }
+
+  void appendWhiteSpace(unsigned count,
+                        unsigned char color = NO_COLOR,
+                        unsigned char attr = NO_ATTR,
+                        UTF16 space = ' ');
+
+  void insertWhiteSpace(unsigned count, unsigned cell_begin,
+                        unsigned char color = NO_COLOR,
+                        unsigned char attr = NO_ATTR,
+                        UTF16 space = ' ');
+
+  void replaceWithWhiteSpace(unsigned count,
+                             unsigned cell_begin, unsigned cell_end,
+                             unsigned char color = NO_COLOR,
+                             unsigned char attr = NO_ATTR,
+                             UTF16 space = ' ');
+  
+  // insert string at specified cell,
+  void insertText(const UTF16 *str, unsigned count,
+                  unsigned cell_begin,
+                  unsigned char color, unsigned char attr, int charstate = FQTermTextLine::NORMAL);
+  void replaceText(const UTF16 *str, unsigned count,
+                   unsigned cell_begin, unsigned cell_end,
+                   unsigned char color, unsigned char attr, int charstate = FQTermTextLine::NORMAL);
+  void deleteText(unsigned cell_begin, unsigned cell_end);
+  void deleteAllText();
+
+  // If cell_begin is a begining of a readable character, return
+  // cell_begin itself, otherwise return the previous cell which starts a
+  // readable character.
+  unsigned getCellBegin(unsigned cell_begin) const;
+
+  // If cell_end is a ending of a readable character, return cell_end
+  // itself, otherwise return the next cell which finishes a
+  // readable character.
+  unsigned getCellEnd(unsigned cell_end) const;
+
+  unsigned getCharBegin(unsigned cell_begin) const;
+  unsigned getCharEnd(unsigned cell_end) const;
+
+ private:
+  unsigned max_cell_count_; // max number of cells allowed.
+  
+  std::vector<uint16_t> cells_;  // store the index of character in this->chars_ for each cell.
+  std::vector<unsigned char> cell_colors_; // store the color for each cell.
+  std::vector<unsigned char> cell_attrs_; // store the attribute for each cell.
+  std::vector<UTF16> chars_;  // store all the character.
+
+  unsigned char stored_color_;
+  unsigned char stored_attr_;
+
+  // range of changed text.
+  unsigned dirty_cell_begin_, dirty_cell_end_;
+
+  // if the given cell isn't a beginning of characters, 
+  // i.e is in the middle of a wide character,
+  // break the character into several unicode replacement characters (URC)
+  // to make the given cell be a beginning of character.
+  bool breakCell(unsigned cell_begin);
+
+  // calculate ANSI escape sequence with given color, attribute and escape strings.
+  void getAnsiCtrlSeq(unsigned char color, unsigned char attr,
+                      const char *escape, QString &result) const;
+
+  // Two functions for debugging/testing.
+  void verifyTextLine() const;
+  void verifyCellRange(unsigned cell_begin, unsigned cell_end) const;
+};
+
+}  // namespace FQTerm
+
+#endif  // FQTERM_TEXTLINE_H