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https://github.com/tmate-io/tmate.git
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cf7b384c43
as UTF-8 in a separate array, the code does a lookup into this every time it gets to a UTF-8 cell. Zero width characters are just appended onto the UTF-8 data for the previous cell. This also means that almost no bytes extra are wasted non-Unicode data (yay). Still some oddities, such as copy mode skips over wide characters in a strange way, and the code could do with some tidying.
212 lines
4.9 KiB
C
212 lines
4.9 KiB
C
/* $Id: grid-view.c,v 1.11 2009-03-28 20:17:29 nicm Exp $ */
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/*
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* Copyright (c) 2008 Nicholas Marriott <nicm@users.sourceforge.net>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
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* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/types.h>
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#include <string.h>
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#include "tmux.h"
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/*
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* Grid view functions. These work using coordinates relative to the visible
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* screen area.
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*/
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#define grid_view_x(gd, x) (x)
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#define grid_view_y(gd, y) ((gd)->hsize + (y))
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/* Get cell for reading. */
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const struct grid_cell *
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grid_view_peek_cell(struct grid *gd, u_int px, u_int py)
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{
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return (grid_peek_cell(gd, grid_view_x(gd, px), grid_view_y(gd, py)));
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}
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/* Get cell for writing. */
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struct grid_cell *
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grid_view_get_cell(struct grid *gd, u_int px, u_int py)
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{
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return (grid_get_cell(gd, grid_view_x(gd, px), grid_view_y(gd, py)));
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}
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/* Set cell. */
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void
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grid_view_set_cell(
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struct grid *gd, u_int px, u_int py, const struct grid_cell *gc)
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{
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grid_set_cell(gd, grid_view_x(gd, px), grid_view_y(gd, py), gc);
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}
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/* Get UTF-8 for reading. */
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const struct grid_utf8 *
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grid_view_peek_utf8(struct grid *gd, u_int px, u_int py)
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{
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return (grid_peek_utf8(gd, grid_view_x(gd, px), grid_view_y(gd, py)));
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}
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/* Get UTF-8 for writing. */
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struct grid_utf8 *
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grid_view_get_utf8(struct grid *gd, u_int px, u_int py)
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{
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return (grid_get_utf8(gd, grid_view_x(gd, px), grid_view_y(gd, py)));
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}
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/* Set UTF-8. */
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void
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grid_view_set_utf8(
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struct grid *gd, u_int px, u_int py, const struct grid_utf8 *gu)
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{
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grid_set_utf8(gd, grid_view_x(gd, px), grid_view_y(gd, py), gu);
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}
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/* Clear area. */
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void
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grid_view_clear(struct grid *gd, u_int px, u_int py, u_int nx, u_int ny)
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{
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GRID_DEBUG(gd, "px=%u, py=%u, nx=%u, ny=%u", px, py, nx, ny);
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px = grid_view_x(gd, px);
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py = grid_view_y(gd, py);
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grid_clear(gd, px, py, nx, ny);
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}
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/* Scroll region up. */
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void
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grid_view_scroll_region_up(struct grid *gd, u_int rupper, u_int rlower)
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{
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GRID_DEBUG(gd, "rupper=%u, rlower=%u", rupper, rlower);
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if (rupper == 0 && rlower == gd->sy - 1) {
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grid_scroll_line(gd);
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return;
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}
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rupper = grid_view_y(gd, rupper);
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rlower = grid_view_y(gd, rlower);
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grid_move_lines(gd, rupper, rupper + 1, rlower - rupper);
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}
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/* Scroll region down. */
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void
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grid_view_scroll_region_down(struct grid *gd, u_int rupper, u_int rlower)
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{
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GRID_DEBUG(gd, "rupper=%u, rlower=%u", rupper, rlower);
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rupper = grid_view_y(gd, rupper);
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rlower = grid_view_y(gd, rlower);
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grid_move_lines(gd, rupper + 1, rupper, rlower - rupper);
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}
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/* Insert lines. */
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void
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grid_view_insert_lines(struct grid *gd, u_int py, u_int ny)
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{
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u_int sy;
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GRID_DEBUG(gd, "py=%u, ny=%u", py, ny);
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py = grid_view_y(gd, py);
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sy = grid_view_y(gd, gd->sy);
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grid_move_lines(gd, py + ny, py, sy - py - ny);
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}
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/* Insert lines in region. */
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void
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grid_view_insert_lines_region(
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struct grid *gd, u_int rupper, u_int rlower, u_int py, u_int ny)
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{
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GRID_DEBUG(
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gd, "rupper=%u, rlower=%u, py=%u, ny=%u", rupper, rlower, py, ny);
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rlower = grid_view_y(gd, rlower);
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py = grid_view_y(gd, py);
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grid_move_lines(gd, py + ny, py, (rlower + 1) - py - ny);
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}
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/* Delete lines. */
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void
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grid_view_delete_lines(struct grid *gd, u_int py, u_int ny)
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{
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u_int sy;
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GRID_DEBUG(gd, "py=%u, ny=%u", py, ny);
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py = grid_view_y(gd, py);
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sy = grid_view_y(gd, gd->sy);
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grid_move_lines(gd, py, py + ny, sy - py - ny);
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}
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/* Delete lines inside scroll region. */
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void
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grid_view_delete_lines_region(
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struct grid *gd, u_int rupper, u_int rlower, u_int py, u_int ny)
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{
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GRID_DEBUG(
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gd, "rupper=%u, rlower=%u, py=%u, ny=%u", rupper, rlower, py, ny);
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rlower = grid_view_y(gd, rlower);
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py = grid_view_y(gd, py);
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grid_move_lines(gd, py, py + ny, (rlower + 1) - py - ny);
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}
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/* Insert characters. */
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void
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grid_view_insert_cells(struct grid *gd, u_int px, u_int py, u_int nx)
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{
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u_int sx;
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GRID_DEBUG(gd, "px=%u, py=%u, nx=%u", px, py, nx);
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px = grid_view_x(gd, px);
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py = grid_view_y(gd, py);
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sx = grid_view_x(gd, gd->sx);
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if (px == sx - 1)
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grid_clear(gd, px, py, 1, 1);
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else
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grid_move_cells(gd, px + nx, px, py, (sx - 1) - (px + nx));
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}
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/* Delete characters. */
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void
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grid_view_delete_cells(struct grid *gd, u_int px, u_int py, u_int nx)
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{
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u_int sx;
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GRID_DEBUG(gd, "px=%u, py=%u, nx=%u", px, py, nx);
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px = grid_view_x(gd, px);
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py = grid_view_y(gd, py);
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sx = grid_view_x(gd, gd->sx);
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grid_move_cells(gd, px, px + nx, py, (sx - 1) - (px + nx));
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}
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