1 /* $OpenBSD: grid-view.c,v 1.7 2009/10/13 15:38:37 nicm Exp $ */ 2 3 /* 4 * Copyright (c) 2008 Nicholas Marriott <nicm@users.sourceforge.net> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER 15 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING 16 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #include <sys/types.h> 20 21 #include <string.h> 22 23 #include "tmux.h" 24 25 /* 26 * Grid view functions. These work using coordinates relative to the visible 27 * screen area. 28 */ 29 30 #define grid_view_x(gd, x) (x) 31 #define grid_view_y(gd, y) ((gd)->hsize + (y)) 32 33 /* Get cell for reading. */ 34 const struct grid_cell * 35 grid_view_peek_cell(struct grid *gd, u_int px, u_int py) 36 { 37 return (grid_peek_cell(gd, grid_view_x(gd, px), grid_view_y(gd, py))); 38 } 39 40 /* Get cell for writing. */ 41 struct grid_cell * 42 grid_view_get_cell(struct grid *gd, u_int px, u_int py) 43 { 44 return (grid_get_cell(gd, grid_view_x(gd, px), grid_view_y(gd, py))); 45 } 46 47 /* Set cell. */ 48 void 49 grid_view_set_cell( 50 struct grid *gd, u_int px, u_int py, const struct grid_cell *gc) 51 { 52 grid_set_cell(gd, grid_view_x(gd, px), grid_view_y(gd, py), gc); 53 } 54 55 /* Get UTF-8 for reading. */ 56 const struct grid_utf8 * 57 grid_view_peek_utf8(struct grid *gd, u_int px, u_int py) 58 { 59 return (grid_peek_utf8(gd, grid_view_x(gd, px), grid_view_y(gd, py))); 60 } 61 62 /* Get UTF-8 for writing. */ 63 struct grid_utf8 * 64 grid_view_get_utf8(struct grid *gd, u_int px, u_int py) 65 { 66 return (grid_get_utf8(gd, grid_view_x(gd, px), grid_view_y(gd, py))); 67 } 68 69 /* Set UTF-8. */ 70 void 71 grid_view_set_utf8( 72 struct grid *gd, u_int px, u_int py, const struct grid_utf8 *gu) 73 { 74 grid_set_utf8(gd, grid_view_x(gd, px), grid_view_y(gd, py), gu); 75 } 76 77 /* Clear area. */ 78 void 79 grid_view_clear(struct grid *gd, u_int px, u_int py, u_int nx, u_int ny) 80 { 81 GRID_DEBUG(gd, "px=%u, py=%u, nx=%u, ny=%u", px, py, nx, ny); 82 83 px = grid_view_x(gd, px); 84 py = grid_view_y(gd, py); 85 86 grid_clear(gd, px, py, nx, ny); 87 } 88 89 /* Scroll region up. */ 90 void 91 grid_view_scroll_region_up(struct grid *gd, u_int rupper, u_int rlower) 92 { 93 GRID_DEBUG(gd, "rupper=%u, rlower=%u", rupper, rlower); 94 95 if (gd->flags & GRID_HISTORY) { 96 grid_collect_history(gd); 97 if (rupper == 0 && rlower == gd->sy - 1) 98 grid_scroll_history(gd); 99 else { 100 rupper = grid_view_y(gd, rupper); 101 rlower = grid_view_y(gd, rlower); 102 grid_scroll_history_region(gd, rupper, rlower); 103 } 104 } else { 105 rupper = grid_view_y(gd, rupper); 106 rlower = grid_view_y(gd, rlower); 107 grid_move_lines(gd, rupper, rupper + 1, rlower - rupper); 108 } 109 } 110 111 /* Scroll region down. */ 112 void 113 grid_view_scroll_region_down(struct grid *gd, u_int rupper, u_int rlower) 114 { 115 GRID_DEBUG(gd, "rupper=%u, rlower=%u", rupper, rlower); 116 117 rupper = grid_view_y(gd, rupper); 118 rlower = grid_view_y(gd, rlower); 119 120 grid_move_lines(gd, rupper + 1, rupper, rlower - rupper); 121 } 122 123 /* Insert lines. */ 124 void 125 grid_view_insert_lines(struct grid *gd, u_int py, u_int ny) 126 { 127 u_int sy; 128 129 GRID_DEBUG(gd, "py=%u, ny=%u", py, ny); 130 131 py = grid_view_y(gd, py); 132 133 sy = grid_view_y(gd, gd->sy); 134 135 grid_move_lines(gd, py + ny, py, sy - py - ny); 136 } 137 138 /* Insert lines in region. */ 139 void 140 grid_view_insert_lines_region(struct grid *gd, u_int rlower, u_int py, u_int ny) 141 { 142 u_int ny2; 143 144 GRID_DEBUG(gd, "rlower=%u, py=%u, ny=%u", rlower, py, ny); 145 146 rlower = grid_view_y(gd, rlower); 147 148 py = grid_view_y(gd, py); 149 150 ny2 = rlower + 1 - py - ny; 151 grid_move_lines(gd, rlower + 1 - ny2, py, ny2); 152 grid_clear(gd, 0, py + ny2, gd->sx, ny - ny2); 153 } 154 155 /* Delete lines. */ 156 void 157 grid_view_delete_lines(struct grid *gd, u_int py, u_int ny) 158 { 159 u_int sy; 160 161 GRID_DEBUG(gd, "py=%u, ny=%u", py, ny); 162 163 py = grid_view_y(gd, py); 164 165 sy = grid_view_y(gd, gd->sy); 166 167 grid_move_lines(gd, py, py + ny, sy - py - ny); 168 grid_clear(gd, 0, sy - ny, gd->sx, py + ny - (sy - ny)); 169 } 170 171 /* Delete lines inside scroll region. */ 172 void 173 grid_view_delete_lines_region(struct grid *gd, u_int rlower, u_int py, u_int ny) 174 { 175 u_int ny2; 176 177 GRID_DEBUG(gd, "rlower=%u, py=%u, ny=%u", rlower, py, ny); 178 179 rlower = grid_view_y(gd, rlower); 180 181 py = grid_view_y(gd, py); 182 183 ny2 = rlower + 1 - py - ny; 184 grid_move_lines(gd, py, py + ny, ny2); 185 grid_clear(gd, 0, py + ny2, gd->sx, ny - ny2); 186 } 187 188 /* Insert characters. */ 189 void 190 grid_view_insert_cells(struct grid *gd, u_int px, u_int py, u_int nx) 191 { 192 u_int sx; 193 194 GRID_DEBUG(gd, "px=%u, py=%u, nx=%u", px, py, nx); 195 196 px = grid_view_x(gd, px); 197 py = grid_view_y(gd, py); 198 199 sx = grid_view_x(gd, gd->sx); 200 201 if (px == sx - 1) 202 grid_clear(gd, px, py, 1, 1); 203 else 204 grid_move_cells(gd, px + nx, px, py, sx - px - nx); 205 } 206 207 /* Delete characters. */ 208 void 209 grid_view_delete_cells(struct grid *gd, u_int px, u_int py, u_int nx) 210 { 211 u_int sx; 212 213 GRID_DEBUG(gd, "px=%u, py=%u, nx=%u", px, py, nx); 214 215 px = grid_view_x(gd, px); 216 py = grid_view_y(gd, py); 217 218 sx = grid_view_x(gd, gd->sx); 219 220 grid_move_cells(gd, px, px + nx, py, sx - px - nx); 221 grid_clear(gd, sx - nx, py, px + nx - (sx - nx), 1); 222 } 223 224 /* Convert cells into a string. */ 225 char * 226 grid_view_string_cells(struct grid *gd, u_int px, u_int py, u_int nx) 227 { 228 GRID_DEBUG(gd, "px=%u, py=%u, nx=%u", px, py, nx); 229 230 px = grid_view_x(gd, px); 231 py = grid_view_y(gd, py); 232 233 return (grid_string_cells(gd, px, py, nx)); 234 } 235