grid-view.c

   1 /* $OpenBSD$ */
   2
   3 /*
   4  * Copyright (c) 2008 Nicholas Marriott <nicholas.marriott@gmail.com>
   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. */
  34 void
  35 grid_view_get_cell(struct grid *gd, u_int px, u_int py, struct grid_cell *gc)
  36 {
  37         grid_get_cell(gd, grid_view_x(gd, px), grid_view_y(gd, py), gc);
  38 }
  39
  40 /* Set cell. */
  41 void
  42 grid_view_set_cell(struct grid *gd, u_int px, u_int py,
  43     const struct grid_cell *gc)
  44 {
  45         grid_set_cell(gd, grid_view_x(gd, px), grid_view_y(gd, py), gc);
  46 }
  47
  48 /* Set padding. */
  49 void
  50 grid_view_set_padding(struct grid *gd, u_int px, u_int py)
  51 {
  52         grid_set_padding(gd, grid_view_x(gd, px), grid_view_y(gd, py));
  53 }
  54
  55 /* Set cells. */
  56 void
  57 grid_view_set_cells(struct grid *gd, u_int px, u_int py,
  58     const struct grid_cell *gc, const char *s, size_t slen)
  59 {
  60         grid_set_cells(gd, grid_view_x(gd, px), grid_view_y(gd, py), gc, s,
  61             slen);
  62 }
  63
  64 /* Clear into history. */
  65 void
  66 grid_view_clear_history(struct grid *gd, u_int bg)
  67 {
  68         struct grid_line        *gl;
  69         u_int                    yy, last;
  70
  71         /* Find the last used line. */
  72         last = 0;
  73         for (yy = 0; yy < gd->sy; yy++) {
  74                 gl = grid_get_line(gd, grid_view_y(gd, yy));
  75                 if (gl->cellused != 0)
  76                         last = yy + 1;
  77         }
  78         if (last == 0) {
  79                 grid_view_clear(gd, 0, 0, gd->sx, gd->sy, bg);
  80                 return;
  81         }
  82
  83         /* Scroll the lines into the history. */
  84         for (yy = 0; yy < last; yy++) {
  85                 grid_collect_history(gd);
  86                 grid_scroll_history(gd, bg);
  87         }
  88         if (last < gd->sy)
  89                 grid_view_clear(gd, 0, 0, gd->sx, gd->sy - last, bg);
  90         gd->hscrolled = 0;
  91 }
  92
  93 /* Clear area. */
  94 void
  95 grid_view_clear(struct grid *gd, u_int px, u_int py, u_int nx, u_int ny,
  96     u_int bg)
  97 {
  98         px = grid_view_x(gd, px);
  99         py = grid_view_y(gd, py);
 100
 101         grid_clear(gd, px, py, nx, ny, bg);
 102 }
 103
 104 /* Scroll region up. */
 105 void
 106 grid_view_scroll_region_up(struct grid *gd, u_int rupper, u_int rlower,
 107     u_int bg)
 108 {
 109         if (gd->flags & GRID_HISTORY) {
 110                 grid_collect_history(gd);
 111                 if (rupper == 0 && rlower == gd->sy - 1)
 112                         grid_scroll_history(gd, bg);
 113                 else {
 114                         rupper = grid_view_y(gd, rupper);
 115                         rlower = grid_view_y(gd, rlower);
 116                         grid_scroll_history_region(gd, rupper, rlower, bg);
 117                 }
 118         } else {
 119                 rupper = grid_view_y(gd, rupper);
 120                 rlower = grid_view_y(gd, rlower);
 121                 grid_move_lines(gd, rupper, rupper + 1, rlower - rupper, bg);
 122         }
 123 }
 124
 125 /* Scroll region down. */
 126 void
 127 grid_view_scroll_region_down(struct grid *gd, u_int rupper, u_int rlower,
 128     u_int bg)
 129 {
 130         rupper = grid_view_y(gd, rupper);
 131         rlower = grid_view_y(gd, rlower);
 132
 133         grid_move_lines(gd, rupper + 1, rupper, rlower - rupper, bg);
 134 }
 135
 136 /* Insert lines. */
 137 void
 138 grid_view_insert_lines(struct grid *gd, u_int py, u_int ny, u_int bg)
 139 {
 140         u_int   sy;
 141
 142         py = grid_view_y(gd, py);
 143
 144         sy = grid_view_y(gd, gd->sy);
 145
 146         grid_move_lines(gd, py + ny, py, sy - py - ny, bg);
 147 }
 148
 149 /* Insert lines in region. */
 150 void
 151 grid_view_insert_lines_region(struct grid *gd, u_int rlower, u_int py,
 152     u_int ny, u_int bg)
 153 {
 154         u_int   ny2;
 155
 156         rlower = grid_view_y(gd, rlower);
 157
 158         py = grid_view_y(gd, py);
 159
 160         ny2 = rlower + 1 - py - ny;
 161         grid_move_lines(gd, rlower + 1 - ny2, py, ny2, bg);
 162         grid_clear(gd, 0, py + ny2, gd->sx, ny - ny2, bg);
 163 }
 164
 165 /* Delete lines. */
 166 void
 167 grid_view_delete_lines(struct grid *gd, u_int py, u_int ny, u_int bg)
 168 {
 169         u_int   sy;
 170
 171         py = grid_view_y(gd, py);
 172
 173         sy = grid_view_y(gd, gd->sy);
 174
 175         grid_move_lines(gd, py, py + ny, sy - py - ny, bg);
 176         grid_clear(gd, 0, sy - ny, gd->sx, py + ny - (sy - ny), bg);
 177 }
 178
 179 /* Delete lines inside scroll region. */
 180 void
 181 grid_view_delete_lines_region(struct grid *gd, u_int rlower, u_int py,
 182     u_int ny, u_int bg)
 183 {
 184         u_int   ny2;
 185
 186         rlower = grid_view_y(gd, rlower);
 187
 188         py = grid_view_y(gd, py);
 189
 190         ny2 = rlower + 1 - py - ny;
 191         grid_move_lines(gd, py, py + ny, ny2, bg);
 192         grid_clear(gd, 0, py + ny2, gd->sx, ny - ny2, bg);
 193 }
 194
 195 /* Insert characters. */
 196 void
 197 grid_view_insert_cells(struct grid *gd, u_int px, u_int py, u_int nx, u_int bg)
 198 {
 199         u_int   sx;
 200
 201         px = grid_view_x(gd, px);
 202         py = grid_view_y(gd, py);
 203
 204         sx = grid_view_x(gd, gd->sx);
 205
 206         if (px >= sx - 1)
 207                 grid_clear(gd, px, py, 1, 1, bg);
 208         else
 209                 grid_move_cells(gd, px + nx, px, py, sx - px - nx, bg);
 210 }
 211
 212 /* Delete characters. */
 213 void
 214 grid_view_delete_cells(struct grid *gd, u_int px, u_int py, u_int nx, u_int bg)
 215 {
 216         u_int   sx;
 217
 218         px = grid_view_x(gd, px);
 219         py = grid_view_y(gd, py);
 220
 221         sx = grid_view_x(gd, gd->sx);
 222
 223         grid_move_cells(gd, px, px + nx, py, sx - px - nx, bg);
 224         grid_clear(gd, sx - nx, py, px + nx - (sx - nx), 1, bg);
 225 }
 226
 227 /* Convert cells into a string. */
 228 char *
 229 grid_view_string_cells(struct grid *gd, u_int px, u_int py, u_int nx)
 230 {
 231         px = grid_view_x(gd, px);
 232         py = grid_view_y(gd, py);
 233
 234         return (grid_string_cells(gd, px, py, nx, NULL, 0, 0, 0));
 235 }