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77 | typedef uint32_t text_t; |
77 | typedef uint32_t text_t; |
78 | #else |
78 | #else |
79 | typedef uint16_t text_t; // saves lots of memory |
79 | typedef uint16_t text_t; // saves lots of memory |
80 | #endif |
80 | #endif |
81 | typedef uint32_t rend_t; |
81 | typedef uint32_t rend_t; |
82 | typedef int16_t tlen_t; |
82 | typedef 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 | |
86 | struct line_t { |
86 | struct line_t { |
87 | text_t *t; // terminal the text |
87 | text_t *t; // terminal the text |
88 | rend_t *r; // rendition, uses RS_ flags |
88 | rend_t *r; // rendition, uses RS_ flags |
89 | tlen_t l; // length of each text line, LINE_CONT == continued on next line |
89 | tlen_t l; // length of each text line, LINE_CONT == continued on next line |
90 | |
90 | |
91 | bool is_cont () |
91 | bool is_longer () |
92 | { |
92 | { |
93 | return l < 0; |
93 | return l < 0; |
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94 | } |
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95 | |
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96 | void set_is_longer () |
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97 | { |
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98 | l = LINE_CONT; |
94 | } |
99 | } |
95 | |
100 | |
96 | void clear () |
101 | void clear () |
97 | { |
102 | { |
98 | t = 0; |
103 | t = 0; |
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100 | l = 0; |
105 | l = 0; |
101 | } |
106 | } |
102 | }; |
107 | }; |
103 | |
108 | |
104 | /* |
109 | /* |
105 | * TermWin elements limits |
110 | * terminal limits: |
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111 | * |
106 | * width : 1 <= width |
112 | * width : 1 <= width |
107 | * height : 1 <= height |
113 | * height : 1 <= height |
108 | * ncol : 1 <= ncol <= MAX(int16_t) |
114 | * ncol : 1 <= ncol <= MAX(int16_t) |
109 | * nrow : 1 <= nrow <= MAX(int16_t) |
115 | * nrow : 1 <= nrow <= MAX(int16_t) |
110 | * saveLines : 0 <= saveLines <= MAX(int16_t) |
116 | * saveLines : 0 <= saveLines <= MAX(int16_t) |
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117 | * total_rows : nrow + saveLines |
111 | * nsaved : 0 <= nscrolled <= saveLines |
118 | * nsaved : 0 <= nsaved <= saveLines |
112 | * term_start: 0 <= term_start < saveLines |
119 | * term_start : 0 <= term_start < saveLines |
113 | * view_start: 0 <= view_start < saveLines |
120 | * view_start : 0 <= view_start < saveLines |
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121 | * |
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122 | * | most coordinates are stored relative to term_start, |
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123 | * ROW_BUF | which is the first line of the terminal screen |
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124 | * |························= row_buf[0] |
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125 | * |························= row_buf[1] |
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126 | * |························= row_buf[2] etc. |
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127 | * | |
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128 | * +------------+···········= term_start - nsaved |
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129 | * | scrollback | |
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130 | * | scrollback +---------+·= term_start - view_start |
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131 | * | scrollback | display | |
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132 | * | scrollback | display | |
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133 | * +------------+·display·+·= term_start |
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134 | * | terminal | display | |
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135 | * | terminal +---------+ |
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136 | * | terminal | |
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137 | * | terminal | |
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138 | * +------------+···········= term_stat + nrow - 1 |
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139 | * | |
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140 | * | |
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141 | * END······················= total_rows |
114 | */ |
142 | */ |
115 | |
143 | |
116 | struct TermWin_t { |
144 | struct TermWin_t { |
117 | int width; /* window width [pixels] */ |
145 | int width; /* window width [pixels] */ |
118 | int height; /* window height [pixels] */ |
146 | int height; /* window height [pixels] */ |
119 | int fwidth; /* font width [pixels] */ |
147 | int fwidth; /* font width [pixels] */ |
120 | int fheight; /* font height [pixels] */ |
148 | int fheight; /* font height [pixels] */ |
121 | int fweight, fslant; |
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122 | int fbase; /* font ascent (baseline) [pixels] */ |
149 | int fbase; /* font ascent (baseline) [pixels] */ |
123 | int ncol; /* window columns [characters] */ |
150 | int ncol; /* window columns [characters] */ |
124 | int nrow; /* window rows [characters] */ |
151 | int nrow; /* window rows [characters] */ |
125 | int focus; /* window has focus */ |
152 | int focus; /* window has focus */ |
126 | int mapped; /* window state mapped? */ |
153 | int mapped; /* window state mapped? */ |
127 | int int_bwidth; /* internal border width */ |
154 | int int_bwidth; /* internal border width */ |
128 | int ext_bwidth; /* external border width */ |
155 | int ext_bwidth; /* external border width */ |
129 | int lineSpace; /* number of extra pixels between rows */ |
156 | int lineSpace; /* number of extra pixels between rows */ |
130 | int saveLines; /* number of lines that fit in scrollback */ |
157 | int saveLines; /* number of lines that fit in scrollback */ |
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158 | int total_rows; /* total number of rows in this terminal */ |
131 | int nsaved; /* number of line actually scrolled */ |
159 | int nsaved; /* number of rows saved to scrollback */ |
132 | int nscrolled; /*D*///TODO remove |
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133 | int term_start; /* term lines start here */ |
160 | int term_start; /* term lines start here */ |
134 | int view_start; /* scrollback view starts here */ |
161 | int view_start; /* scrollback view starts here */ |
135 | Window parent[6]; /* parent identifiers - we're parent[0] */ |
162 | Window parent[6]; /* parent identifiers - we're parent[0] */ |
136 | Window vt; /* vt100 window */ |
163 | Window vt; /* vt100 window */ |
137 | GC gc; /* GC for drawing */ |
164 | GC gc; /* GC for drawing */ |
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141 | }; |
168 | }; |
142 | |
169 | |
143 | /* |
170 | /* |
144 | * screen accounting: |
171 | * screen accounting: |
145 | * screen_t elements |
172 | * screen_t elements |
146 | * text: Contains all text information including the scrollback buffer. |
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147 | * Each line is length ncol |
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148 | * tlen: The length of the line or -1 for wrapped lines. |
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149 | * rend: Contains rendition information: font, bold, colour, etc. |
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150 | * * Note: Each line for both text and rend are only allocated on demand, and |
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151 | * text[x] is allocated <=> rend[x] is allocated for all x. |
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152 | * row: Cursor row position : 0 <= row < nrow |
173 | * row: Cursor row position : 0 <= row < nrow |
153 | * col: Cursor column position : 0 <= col < ncol |
174 | * col: Cursor column position : 0 <= col < ncol |
154 | * tscroll: Scrolling region top row inclusive : 0 <= row < nrow |
175 | * tscroll: Scrolling region top row inclusive : 0 <= row < nrow |
155 | * bscroll: Scrolling region bottom row inclusive : 0 <= row < nrow |
176 | * bscroll: Scrolling region bottom row inclusive : 0 <= row < nrow |
156 | * |
177 | * |
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158 | * clicks: 1, 2 or 3 clicks - 4 indicates a special condition of 1 where |
179 | * clicks: 1, 2 or 3 clicks - 4 indicates a special condition of 1 where |
159 | * nothing is selected |
180 | * nothing is selected |
160 | * beg: row/column of beginning of selection : never past mark |
181 | * beg: row/column of beginning of selection : never past mark |
161 | * mark: row/column of initial click : never past end |
182 | * mark: row/column of initial click : never past end |
162 | * end: row/column of one character past end of selection |
183 | * end: row/column of one character past end of selection |
163 | * * Note: -nscrolled <= beg.row <= mark.row <= end.row < nrow |
184 | * * Note: -nsaved <= beg.row <= mark.row <= end.row < nrow |
164 | * * Note: col == -1 ==> we're left of screen |
185 | * * Note: col == -1 ==> we're left of screen |
165 | * |
186 | * |
166 | * Layout of text/rend information in the screen_t text/rend structures: |
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167 | * Rows [0] ... [saveLines - 1] |
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168 | * scrollback region : we're only here if view_start != 0 |
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169 | * Rows [saveLines] ... [saveLines + nrow - 1] |
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170 | * normal `unscrolled' screen region |
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171 | */ |
187 | */ |
172 | typedef struct { |
188 | typedef struct { |
173 | line_t **line; |
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174 | |
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175 | row_col_t cur; /* cursor position on the screen */ |
189 | row_col_t cur; /* cursor position on the screen */ |
176 | unsigned int tscroll; /* top of settable scroll region */ |
190 | int tscroll; /* top of settable scroll region */ |
177 | unsigned int bscroll; /* bottom of settable scroll region */ |
191 | int bscroll; /* bottom of settable scroll region */ |
178 | unsigned int charset; /* character set number [0..3] */ |
192 | unsigned int charset; /* character set number [0..3] */ |
179 | unsigned int flags; /* see below */ |
193 | unsigned int flags; /* see below */ |
180 | row_col_t s_cur; /* saved cursor position */ |
194 | row_col_t s_cur; /* saved cursor position */ |
181 | unsigned int s_charset; /* saved character set number [0..3] */ |
195 | unsigned int s_charset; /* saved character set number [0..3] */ |
182 | char s_charset_char; |
196 | char s_charset_char; |
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293 | short numpix_colors; |
307 | short numpix_colors; |
294 | Cursor TermWin_cursor; /* cursor for vt window */ |
308 | Cursor TermWin_cursor; /* cursor for vt window */ |
295 | int sb_shadow; /* scrollbar shadow width */ |
309 | int sb_shadow; /* scrollbar shadow width */ |
296 | rxvt_ptytty pty; |
310 | rxvt_ptytty pty; |
297 | int numlock_state; |
311 | int numlock_state; |
298 | line_t *save; // all lines, scorllback + terminal, circular |
312 | line_t *row_buf; // all lines, scrollback + terminal, circular |
299 | line_t *drawn; // text on screen |
313 | line_t *drawn_buf; // text on screen |
300 | line_t *buf; // temporary buffer |
314 | line_t *temp_buf; // temporary buffer |
301 | line_t *swap_save; // lines for swap buffer |
315 | line_t *swap_buf; // lines for swap buffer |
302 | char *tabs; /* per location: 1 == tab-stop */ |
316 | char *tabs; /* per location: 1 == tab-stop */ |
303 | screen_t screen; |
317 | screen_t screen; |
304 | screen_t swap; |
318 | screen_t swap; |
305 | selection_t selection; |
319 | selection_t selection; |
306 | }; |
320 | }; |