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Comparing rxvt-unicode/src/rxvtlib.h.in (file contents):
Revision 1.51 by root, Tue Dec 20 19:30:59 2005 UTC vs.
Revision 1.52 by root, Wed Dec 21 19:50:17 2005 UTC

… …
77typedef uint32_t text_t; 77typedef uint32_t text_t;
78#else 78#else
79typedef uint16_t text_t; // saves lots of memory 79typedef uint16_t text_t; // saves lots of memory
80#endif 80#endif
81typedef uint32_t rend_t; 81typedef uint32_t rend_t;
82typedef int16_t tlen_t; 82typedef int32_t tlen_t; // was int16_t, but this result sin smaller code and memory use
83 83
84#define LINE_CONT -1 84#define LINE_CONT -1
85 85
86struct line_t { 86struct line_t {
87 text_t *t; // terminal the text 87 text_t *t; // terminal the text
… …
105 l = 0; 105 l = 0;
106 } 106 }
107}; 107};
108 108
109/* 109/*
110 * TermWin elements limits 110 * terminal limits:
111 *
111 * width : 1 <= width 112 * width : 1 <= width
112 * height : 1 <= height 113 * height : 1 <= height
113 * ncol : 1 <= ncol <= MAX(int16_t) 114 * ncol : 1 <= ncol <= MAX(int16_t)
114 * nrow : 1 <= nrow <= MAX(int16_t) 115 * nrow : 1 <= nrow <= MAX(int16_t)
115 * saveLines : 0 <= saveLines <= MAX(int16_t) 116 * saveLines : 0 <= saveLines <= MAX(int16_t)
116 * nlines : nrow + saveLines 117 * total_rows : nrow + saveLines
117 * nsaved : 0 <= nsaved <= saveLines 118 * nsaved : 0 <= nsaved <= saveLines
118 * term_start: 0 <= term_start < saveLines 119 * term_start : 0 <= term_start < saveLines
119 * view_start: 0 <= view_start < saveLines 120 * view_start : 0 <= view_start < saveLines
121 *
122 * | most coordinates are stored relative to term_start,
123 * ROW_BUF | which is the first line of the terminal screen
124 * |························= row_buf[0]
125 * |························= row_buf[1]
126 * |························= row_buf[2] etc.
127 * |
128 * +------------+···········= term_start - nsaved
129 * | scrollback |
130 * | scrollback +---------+·= term_start - view_start
131 * | scrollback | display |
132 * | scrollback | display |
133 * +------------+·display·+·= term_start
134 * | terminal | display |
135 * | terminal +---------+
136 * | terminal |
137 * | terminal |
138 * +------------+···········= term_stat + nrow - 1
139 * |
140 * |
141 * END······················= total_rows
120 */ 142 */
121 143
122struct TermWin_t { 144struct TermWin_t {
123 int width; /* window width [pixels] */ 145 int width; /* window width [pixels] */
124 int height; /* window height [pixels] */ 146 int height; /* window height [pixels] */
125 int fwidth; /* font width [pixels] */ 147 int fwidth; /* font width [pixels] */
126 int fheight; /* font height [pixels] */ 148 int fheight; /* font height [pixels] */
127 int fweight, fslant;
128 int fbase; /* font ascent (baseline) [pixels] */ 149 int fbase; /* font ascent (baseline) [pixels] */
129 int ncol; /* window columns [characters] */ 150 int ncol; /* window columns [characters] */
130 int nrow; /* window rows [characters] */ 151 int nrow; /* window rows [characters] */
131 int focus; /* window has focus */ 152 int focus; /* window has focus */
132 int mapped; /* window state mapped? */ 153 int mapped; /* window state mapped? */
… …
147}; 168};
148 169
149/* 170/*
150 * screen accounting: 171 * screen accounting:
151 * screen_t elements 172 * screen_t elements
152 * text: Contains all text information including the scrollback buffer.
153 * Each line is length ncol
154 * tlen: The length of the line or -1 for wrapped lines.
155 * rend: Contains rendition information: font, bold, colour, etc.
156 * * Note: Each line for both text and rend are only allocated on demand, and
157 * text[x] is allocated <=> rend[x] is allocated for all x.
158 * row: Cursor row position : 0 <= row < nrow 173 * row: Cursor row position : 0 <= row < nrow
159 * col: Cursor column position : 0 <= col < ncol 174 * col: Cursor column position : 0 <= col < ncol
160 * tscroll: Scrolling region top row inclusive : 0 <= row < nrow 175 * tscroll: Scrolling region top row inclusive : 0 <= row < nrow
161 * bscroll: Scrolling region bottom row inclusive : 0 <= row < nrow 176 * bscroll: Scrolling region bottom row inclusive : 0 <= row < nrow
162 * 177 *
… …
167 * mark: row/column of initial click : never past end 182 * mark: row/column of initial click : never past end
168 * end: row/column of one character past end of selection 183 * end: row/column of one character past end of selection
169 * * Note: -nsaved <= beg.row <= mark.row <= end.row < nrow 184 * * Note: -nsaved <= beg.row <= mark.row <= end.row < nrow
170 * * Note: col == -1 ==> we're left of screen 185 * * Note: col == -1 ==> we're left of screen
171 * 186 *
172 * Layout of text/rend information in the screen_t text/rend structures:
173 * Rows [0] ... [saveLines - 1]
174 * scrollback region : we're only here if view_start != 0
175 * Rows [saveLines] ... [saveLines + nrow - 1]
176 * normal `unsaved' screen region
177 */ 187 */
178typedef struct { 188typedef struct {
179 line_t **line;
180
181 row_col_t cur; /* cursor position on the screen */ 189 row_col_t cur; /* cursor position on the screen */
182 unsigned int tscroll; /* top of settable scroll region */ 190 int tscroll; /* top of settable scroll region */
183 unsigned int bscroll; /* bottom of settable scroll region */ 191 int bscroll; /* bottom of settable scroll region */
184 unsigned int charset; /* character set number [0..3] */ 192 unsigned int charset; /* character set number [0..3] */
185 unsigned int flags; /* see below */ 193 unsigned int flags; /* see below */
186 row_col_t s_cur; /* saved cursor position */ 194 row_col_t s_cur; /* saved cursor position */
187 unsigned int s_charset; /* saved character set number [0..3] */ 195 unsigned int s_charset; /* saved character set number [0..3] */
188 char s_charset_char; 196 char s_charset_char;
… …
299 short numpix_colors; 307 short numpix_colors;
300 Cursor TermWin_cursor; /* cursor for vt window */ 308 Cursor TermWin_cursor; /* cursor for vt window */
301 int sb_shadow; /* scrollbar shadow width */ 309 int sb_shadow; /* scrollbar shadow width */
302 rxvt_ptytty pty; 310 rxvt_ptytty pty;
303 int numlock_state; 311 int numlock_state;
304 line_t *save; // all lines, scorllback + terminal, circular 312 line_t *row_buf; // all lines, scrollback + terminal, circular
305 line_t *drawn; // text on screen 313 line_t *drawn_buf; // text on screen
306 line_t *buf; // temporary buffer 314 line_t *temp_buf; // temporary buffer
307 line_t *swap_save; // lines for swap buffer 315 line_t *swap_buf; // lines for swap buffer
308 char *tabs; /* per location: 1 == tab-stop */ 316 char *tabs; /* per location: 1 == tab-stop */
309 screen_t screen; 317 screen_t screen;
310 screen_t swap; 318 screen_t swap;
311 selection_t selection; 319 selection_t selection;
312}; 320};

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