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/* $OpenBSD: grid-view.c,v 1.31 2018/07/04 09:44:07 nicm Exp $ */
/*
* Copyright (c) 2008 Nicholas Marriott <nicholas.marriott@gmail.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <string.h>
#include "tmux.h"
/*
* Grid view functions. These work using coordinates relative to the visible
* screen area.
*/
#define grid_view_x(gd, x) (x)
#define grid_view_y(gd, y) ((gd)->hsize + (y))
/* Get cell. */
void
grid_view_get_cell(struct grid *gd, u_int px, u_int py, struct grid_cell *gc)
{
grid_get_cell(gd, grid_view_x(gd, px), grid_view_y(gd, py), gc);
}
/* Set cell. */
void
grid_view_set_cell(struct grid *gd, u_int px, u_int py,
const struct grid_cell *gc)
{
grid_set_cell(gd, grid_view_x(gd, px), grid_view_y(gd, py), gc);
}
/* Set cells. */
void
grid_view_set_cells(struct grid *gd, u_int px, u_int py,
const struct grid_cell *gc, const char *s, size_t slen)
{
grid_set_cells(gd, grid_view_x(gd, px), grid_view_y(gd, py), gc, s,
slen);
}
/* Clear into history. */
void
grid_view_clear_history(struct grid *gd, u_int bg)
{
struct grid_line *gl;
u_int yy, last;
/* Find the last used line. */
last = 0;
for (yy = 0; yy < gd->sy; yy++) {
gl = grid_get_line(gd, grid_view_y(gd, yy));
if (gl->cellused != 0)
last = yy + 1;
}
if (last == 0) {
grid_view_clear(gd, 0, 0, gd->sx, gd->sy, bg);
return;
}
/* Scroll the lines into the history. */
for (yy = 0; yy < last; yy++) {
grid_collect_history(gd);
grid_scroll_history(gd, bg);
}
if (last < gd->sy)
grid_view_clear(gd, 0, 0, gd->sx, gd->sy - last, bg);
gd->hscrolled = 0;
}
/* Clear area. */
void
grid_view_clear(struct grid *gd, u_int px, u_int py, u_int nx, u_int ny,
u_int bg)
{
px = grid_view_x(gd, px);
py = grid_view_y(gd, py);
grid_clear(gd, px, py, nx, ny, bg);
}
/* Scroll region up. */
void
grid_view_scroll_region_up(struct grid *gd, u_int rupper, u_int rlower,
u_int bg)
{
if (gd->flags & GRID_HISTORY) {
grid_collect_history(gd);
if (rupper == 0 && rlower == gd->sy - 1)
grid_scroll_history(gd, bg);
else {
rupper = grid_view_y(gd, rupper);
rlower = grid_view_y(gd, rlower);
grid_scroll_history_region(gd, rupper, rlower, bg);
}
} else {
rupper = grid_view_y(gd, rupper);
rlower = grid_view_y(gd, rlower);
grid_move_lines(gd, rupper, rupper + 1, rlower - rupper, bg);
}
}
/* Scroll region down. */
void
grid_view_scroll_region_down(struct grid *gd, u_int rupper, u_int rlower,
u_int bg)
{
rupper = grid_view_y(gd, rupper);
rlower = grid_view_y(gd, rlower);
grid_move_lines(gd, rupper + 1, rupper, rlower - rupper, bg);
}
/* Insert lines. */
void
grid_view_insert_lines(struct grid *gd, u_int py, u_int ny, u_int bg)
{
u_int sy;
py = grid_view_y(gd, py);
sy = grid_view_y(gd, gd->sy);
grid_move_lines(gd, py + ny, py, sy - py - ny, bg);
}
/* Insert lines in region. */
void
grid_view_insert_lines_region(struct grid *gd, u_int rlower, u_int py,
u_int ny, u_int bg)
{
u_int ny2;
rlower = grid_view_y(gd, rlower);
py = grid_view_y(gd, py);
ny2 = rlower + 1 - py - ny;
grid_move_lines(gd, rlower + 1 - ny2, py, ny2, bg);
grid_clear(gd, 0, py + ny2, gd->sx, ny - ny2, bg);
}
/* Delete lines. */
void
grid_view_delete_lines(struct grid *gd, u_int py, u_int ny, u_int bg)
{
u_int sy;
py = grid_view_y(gd, py);
sy = grid_view_y(gd, gd->sy);
grid_move_lines(gd, py, py + ny, sy - py - ny, bg);
grid_clear(gd, 0, sy - ny, gd->sx, py + ny - (sy - ny), bg);
}
/* Delete lines inside scroll region. */
void
grid_view_delete_lines_region(struct grid *gd, u_int rlower, u_int py,
u_int ny, u_int bg)
{
u_int ny2;
rlower = grid_view_y(gd, rlower);
py = grid_view_y(gd, py);
ny2 = rlower + 1 - py - ny;
grid_move_lines(gd, py, py + ny, ny2, bg);
grid_clear(gd, 0, py + ny2, gd->sx, ny - ny2, bg);
}
/* Insert characters. */
void
grid_view_insert_cells(struct grid *gd, u_int px, u_int py, u_int nx, u_int bg)
{
u_int sx;
px = grid_view_x(gd, px);
py = grid_view_y(gd, py);
sx = grid_view_x(gd, gd->sx);
if (px >= sx - 1)
grid_clear(gd, px, py, 1, 1, bg);
else
grid_move_cells(gd, px + nx, px, py, sx - px - nx, bg);
}
/* Delete characters. */
void
grid_view_delete_cells(struct grid *gd, u_int px, u_int py, u_int nx, u_int bg)
{
u_int sx;
px = grid_view_x(gd, px);
py = grid_view_y(gd, py);
sx = grid_view_x(gd, gd->sx);
grid_move_cells(gd, px, px + nx, py, sx - px - nx, bg);
grid_clear(gd, sx - nx, py, px + nx - (sx - nx), 1, bg);
}
/* Convert cells into a string. */
char *
grid_view_string_cells(struct grid *gd, u_int px, u_int py, u_int nx)
{
px = grid_view_x(gd, px);
py = grid_view_y(gd, py);
return (grid_string_cells(gd, px, py, nx, NULL, 0, 0, 0));
}
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