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821 lines
18 KiB
C
821 lines
18 KiB
C
/* $OpenBSD$ */
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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 <stdlib.h>
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#include <string.h>
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#include "tmux.h"
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/*
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* Grid data. This is the basic data structure that represents what is shown on
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* screen.
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*
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* A grid is a grid of cells (struct grid_cell). Lines are not allocated until
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* cells in that line are written to. The grid is split into history and
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* viewable data with the history starting at row (line) 0 and extending to
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* (hsize - 1); from hsize to hsize + (sy - 1) is the viewable data. All
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* functions in this file work on absolute coordinates, grid-view.c has
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* functions which work on the screen data.
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*/
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/* Default grid cell data. */
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const struct grid_cell grid_default_cell = { 0, 0, 8, 8, (1 << 4) | 1, " " };
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#define grid_put_cell(gd, px, py, gc) do { \
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memcpy(&gd->linedata[py].celldata[px], \
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gc, sizeof gd->linedata[py].celldata[px]); \
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} while (0)
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#define grid_put_utf8(gd, px, py, gc) do { \
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memcpy(&gd->linedata[py].utf8data[px], \
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gc, sizeof gd->linedata[py].utf8data[px]); \
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} while (0)
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int grid_check_y(struct grid *, u_int);
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#ifdef DEBUG
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int
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grid_check_y(struct grid *gd, u_int py)
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{
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if ((py) >= (gd)->hsize + (gd)->sy)
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log_fatalx("y out of range: %u", py);
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return (0);
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}
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#else
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int
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grid_check_y(struct grid *gd, u_int py)
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{
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if ((py) >= (gd)->hsize + (gd)->sy) {
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log_debug("y out of range: %u", py);
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return (-1);
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}
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return (0);
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}
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#endif
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void grid_reflow_join(struct grid *, u_int *, struct grid_line *, u_int);
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void grid_reflow_split(struct grid *, u_int *, struct grid_line *, u_int,
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u_int);
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void grid_reflow_move(struct grid *, u_int *, struct grid_line *);
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size_t grid_string_cells_fg(const struct grid_cell *, int *);
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size_t grid_string_cells_bg(const struct grid_cell *, int *);
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void grid_string_cells_code(const struct grid_cell *,
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const struct grid_cell *, char *, size_t, int);
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/* Create a new grid. */
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struct grid *
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grid_create(u_int sx, u_int sy, u_int hlimit)
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{
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struct grid *gd;
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gd = xmalloc(sizeof *gd);
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gd->sx = sx;
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gd->sy = sy;
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gd->flags = GRID_HISTORY;
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gd->hsize = 0;
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gd->hlimit = hlimit;
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gd->linedata = xcalloc(gd->sy, sizeof *gd->linedata);
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return (gd);
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}
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/* Destroy grid. */
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void
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grid_destroy(struct grid *gd)
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{
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struct grid_line *gl;
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u_int yy;
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for (yy = 0; yy < gd->hsize + gd->sy; yy++) {
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gl = &gd->linedata[yy];
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free(gl->celldata);
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}
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free(gd->linedata);
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free(gd);
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}
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/* Compare grids. */
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int
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grid_compare(struct grid *ga, struct grid *gb)
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{
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struct grid_line *gla, *glb;
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struct grid_cell *gca, *gcb;
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u_int xx, yy;
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if (ga->sx != gb->sx || ga->sy != gb->sy)
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return (1);
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for (yy = 0; yy < ga->sy; yy++) {
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gla = &ga->linedata[yy];
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glb = &gb->linedata[yy];
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if (gla->cellsize != glb->cellsize)
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return (1);
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for (xx = 0; xx < ga->sx; xx++) {
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gca = &gla->celldata[xx];
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gcb = &glb->celldata[xx];
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if (memcmp(gca, gcb, sizeof (struct grid_cell)) != 0)
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return (1);
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}
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}
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return (0);
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}
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/*
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* Collect lines from the history if at the limit. Free the top (oldest) 10%
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* and shift up.
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*/
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void
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grid_collect_history(struct grid *gd)
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{
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u_int yy;
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GRID_DEBUG(gd, "");
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if (gd->hsize < gd->hlimit)
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return;
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yy = gd->hlimit / 10;
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if (yy < 1)
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yy = 1;
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grid_move_lines(gd, 0, yy, gd->hsize + gd->sy - yy);
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gd->hsize -= yy;
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}
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/*
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* Scroll the entire visible screen, moving one line into the history. Just
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* allocate a new line at the bottom and move the history size indicator.
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*/
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void
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grid_scroll_history(struct grid *gd)
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{
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u_int yy;
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GRID_DEBUG(gd, "");
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yy = gd->hsize + gd->sy;
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gd->linedata = xrealloc(gd->linedata, yy + 1, sizeof *gd->linedata);
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memset(&gd->linedata[yy], 0, sizeof gd->linedata[yy]);
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gd->hsize++;
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}
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/* Scroll a region up, moving the top line into the history. */
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void
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grid_scroll_history_region(struct grid *gd, u_int upper, u_int lower)
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{
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struct grid_line *gl_history, *gl_upper, *gl_lower;
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u_int yy;
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GRID_DEBUG(gd, "upper=%u, lower=%u", upper, lower);
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/* Create a space for a new line. */
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yy = gd->hsize + gd->sy;
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gd->linedata = xrealloc(gd->linedata, yy + 1, sizeof *gd->linedata);
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/* Move the entire screen down to free a space for this line. */
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gl_history = &gd->linedata[gd->hsize];
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memmove(gl_history + 1, gl_history, gd->sy * sizeof *gl_history);
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/* Adjust the region and find its start and end. */
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upper++;
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gl_upper = &gd->linedata[upper];
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lower++;
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gl_lower = &gd->linedata[lower];
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/* Move the line into the history. */
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memcpy(gl_history, gl_upper, sizeof *gl_history);
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/* Then move the region up and clear the bottom line. */
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memmove(gl_upper, gl_upper + 1, (lower - upper) * sizeof *gl_upper);
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memset(gl_lower, 0, sizeof *gl_lower);
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/* Move the history offset down over the line. */
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gd->hsize++;
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}
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/* Expand line to fit to cell. */
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void
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grid_expand_line(struct grid *gd, u_int py, u_int sx)
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{
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struct grid_line *gl;
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u_int xx;
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gl = &gd->linedata[py];
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if (sx <= gl->cellsize)
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return;
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gl->celldata = xrealloc(gl->celldata, sx, sizeof *gl->celldata);
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for (xx = gl->cellsize; xx < sx; xx++)
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grid_put_cell(gd, xx, py, &grid_default_cell);
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gl->cellsize = sx;
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}
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/* Peek at grid line. */
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const struct grid_line *
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grid_peek_line(struct grid *gd, u_int py)
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{
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if (grid_check_y(gd, py) != 0)
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return (NULL);
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return (&gd->linedata[py]);
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}
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/* Get cell for reading. */
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const struct grid_cell *
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grid_peek_cell(struct grid *gd, u_int px, u_int py)
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{
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if (grid_check_y(gd, py) != 0)
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return (&grid_default_cell);
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if (px >= gd->linedata[py].cellsize)
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return (&grid_default_cell);
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return (&gd->linedata[py].celldata[px]);
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}
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/* Get cell at relative position (for writing). */
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struct grid_cell *
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grid_get_cell(struct grid *gd, u_int px, u_int py)
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{
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if (grid_check_y(gd, py) != 0)
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return (NULL);
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grid_expand_line(gd, py, px + 1);
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return (&gd->linedata[py].celldata[px]);
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}
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/* Set cell at relative position. */
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void
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grid_set_cell(struct grid *gd, u_int px, u_int py, const struct grid_cell *gc)
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{
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if (grid_check_y(gd, py) != 0)
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return;
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grid_expand_line(gd, py, px + 1);
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grid_put_cell(gd, px, py, gc);
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}
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/* Clear area. */
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void
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grid_clear(struct grid *gd, u_int px, u_int py, u_int nx, u_int ny)
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{
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u_int xx, yy;
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GRID_DEBUG(gd, "px=%u, py=%u, nx=%u, ny=%u", px, py, nx, ny);
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if (nx == 0 || ny == 0)
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return;
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if (px == 0 && nx == gd->sx) {
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grid_clear_lines(gd, py, ny);
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return;
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}
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if (grid_check_y(gd, py) != 0)
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return;
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if (grid_check_y(gd, py + ny - 1) != 0)
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return;
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for (yy = py; yy < py + ny; yy++) {
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if (px >= gd->linedata[yy].cellsize)
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continue;
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if (px + nx >= gd->linedata[yy].cellsize) {
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gd->linedata[yy].cellsize = px;
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continue;
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}
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for (xx = px; xx < px + nx; xx++) {
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if (xx >= gd->linedata[yy].cellsize)
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break;
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grid_put_cell(gd, xx, yy, &grid_default_cell);
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}
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}
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}
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/* Clear lines. This just frees and truncates the lines. */
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void
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grid_clear_lines(struct grid *gd, u_int py, u_int ny)
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{
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struct grid_line *gl;
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u_int yy;
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GRID_DEBUG(gd, "py=%u, ny=%u", py, ny);
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if (ny == 0)
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return;
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if (grid_check_y(gd, py) != 0)
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return;
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if (grid_check_y(gd, py + ny - 1) != 0)
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return;
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for (yy = py; yy < py + ny; yy++) {
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gl = &gd->linedata[yy];
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free(gl->celldata);
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memset(gl, 0, sizeof *gl);
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}
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}
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/* Move a group of lines. */
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void
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grid_move_lines(struct grid *gd, u_int dy, u_int py, u_int ny)
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{
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u_int yy;
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GRID_DEBUG(gd, "dy=%u, py=%u, ny=%u", dy, py, ny);
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if (ny == 0 || py == dy)
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return;
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if (grid_check_y(gd, py) != 0)
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return;
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if (grid_check_y(gd, py + ny - 1) != 0)
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return;
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if (grid_check_y(gd, dy) != 0)
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return;
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if (grid_check_y(gd, dy + ny - 1) != 0)
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return;
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/* Free any lines which are being replaced. */
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for (yy = dy; yy < dy + ny; yy++) {
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if (yy >= py && yy < py + ny)
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continue;
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grid_clear_lines(gd, yy, 1);
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}
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memmove(
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&gd->linedata[dy], &gd->linedata[py], ny * (sizeof *gd->linedata));
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/* Wipe any lines that have been moved (without freeing them). */
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for (yy = py; yy < py + ny; yy++) {
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if (yy >= dy && yy < dy + ny)
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continue;
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memset(&gd->linedata[yy], 0, sizeof gd->linedata[yy]);
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}
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}
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/* Move a group of cells. */
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void
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grid_move_cells(struct grid *gd, u_int dx, u_int px, u_int py, u_int nx)
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{
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struct grid_line *gl;
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u_int xx;
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GRID_DEBUG(gd, "dx=%u, px=%u, py=%u, nx=%u", dx, px, py, nx);
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if (nx == 0 || px == dx)
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return;
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if (grid_check_y(gd, py) != 0)
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return;
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gl = &gd->linedata[py];
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grid_expand_line(gd, py, px + nx);
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grid_expand_line(gd, py, dx + nx);
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memmove(
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&gl->celldata[dx], &gl->celldata[px], nx * sizeof *gl->celldata);
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/* Wipe any cells that have been moved. */
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for (xx = px; xx < px + nx; xx++) {
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if (xx >= dx && xx < dx + nx)
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continue;
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grid_put_cell(gd, xx, py, &grid_default_cell);
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}
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}
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/* Get ANSI foreground sequence. */
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size_t
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grid_string_cells_fg(const struct grid_cell *gc, int *values)
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{
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size_t n;
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n = 0;
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if (gc->flags & GRID_FLAG_FG256) {
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values[n++] = 38;
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values[n++] = 5;
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values[n++] = gc->fg;
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} else {
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switch (gc->fg) {
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case 0:
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case 1:
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case 2:
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case 3:
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case 4:
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case 5:
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case 6:
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case 7:
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values[n++] = gc->fg + 30;
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break;
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case 8:
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values[n++] = 39;
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break;
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case 90:
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case 91:
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case 92:
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case 93:
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case 94:
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case 95:
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case 96:
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case 97:
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values[n++] = gc->fg;
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break;
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}
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}
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return (n);
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}
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/* Get ANSI background sequence. */
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size_t
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grid_string_cells_bg(const struct grid_cell *gc, int *values)
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{
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size_t n;
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n = 0;
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if (gc->flags & GRID_FLAG_BG256) {
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values[n++] = 48;
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values[n++] = 5;
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values[n++] = gc->bg;
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} else {
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switch (gc->bg) {
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case 0:
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case 1:
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case 2:
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case 3:
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case 4:
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case 5:
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case 6:
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case 7:
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values[n++] = gc->bg + 40;
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break;
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case 8:
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values[n++] = 49;
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break;
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case 100:
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case 101:
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case 102:
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case 103:
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case 104:
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case 105:
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case 106:
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case 107:
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values[n++] = gc->bg - 10;
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break;
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}
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}
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return (n);
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}
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/*
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* Returns ANSI code to set particular attributes (colour, bold and so on)
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* given a current state. The output buffer must be able to hold at least 57
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* bytes.
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*/
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void
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grid_string_cells_code(const struct grid_cell *lastgc,
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const struct grid_cell *gc, char *buf, size_t len, int escape_c0)
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{
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int oldc[16], newc[16], s[32];
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size_t noldc, nnewc, n, i;
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u_int attr = gc->attr;
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u_int lastattr = lastgc->attr;
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char tmp[64];
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struct {
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u_int mask;
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u_int code;
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} attrs[] = {
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{ GRID_ATTR_BRIGHT, 1 },
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{ GRID_ATTR_DIM, 2 },
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{ GRID_ATTR_ITALICS, 3 },
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{ GRID_ATTR_UNDERSCORE, 4 },
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{ GRID_ATTR_BLINK, 5 },
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{ GRID_ATTR_REVERSE, 7 },
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{ GRID_ATTR_HIDDEN, 8 }
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};
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n = 0;
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/* If any attribute is removed, begin with 0. */
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for (i = 0; i < nitems(attrs); i++) {
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if (!(attr & attrs[i].mask) && (lastattr & attrs[i].mask)) {
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s[n++] = 0;
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lastattr &= GRID_ATTR_CHARSET;
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break;
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}
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}
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/* For each attribute that is newly set, add its code. */
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for (i = 0; i < nitems(attrs); i++) {
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if ((attr & attrs[i].mask) && !(lastattr & attrs[i].mask))
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s[n++] = attrs[i].code;
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}
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/* If the foreground c changed, append its parameters. */
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nnewc = grid_string_cells_fg(gc, newc);
|
|
noldc = grid_string_cells_fg(lastgc, oldc);
|
|
if (nnewc != noldc ||
|
|
memcmp(newc,oldc, nnewc * sizeof newc[0]) != 0) {
|
|
for (i = 0; i < nnewc; i++)
|
|
s[n++] = newc[i];
|
|
}
|
|
|
|
/* If the background c changed, append its parameters. */
|
|
nnewc = grid_string_cells_bg(gc, newc);
|
|
noldc = grid_string_cells_bg(lastgc, oldc);
|
|
if (nnewc != noldc ||
|
|
memcmp(newc, oldc, nnewc * sizeof newc[0]) != 0) {
|
|
for (i = 0; i < nnewc; i++)
|
|
s[n++] = newc[i];
|
|
}
|
|
|
|
/* If there are any parameters, append an SGR code. */
|
|
*buf = '\0';
|
|
if (n > 0) {
|
|
if (escape_c0)
|
|
strlcat(buf, "\\033[", len);
|
|
else
|
|
strlcat(buf, "\033[", len);
|
|
for (i = 0; i < n; i++) {
|
|
if (i + 1 < n)
|
|
xsnprintf(tmp, sizeof tmp, "%d;", s[i]);
|
|
else
|
|
xsnprintf(tmp, sizeof tmp, "%d", s[i]);
|
|
strlcat(buf, tmp, len);
|
|
}
|
|
strlcat(buf, "m", len);
|
|
}
|
|
|
|
/* Append shift in/shift out if needed. */
|
|
if ((attr & GRID_ATTR_CHARSET) && !(lastattr & GRID_ATTR_CHARSET)) {
|
|
if (escape_c0)
|
|
strlcat(buf, "\\016", len); /* SO */
|
|
else
|
|
strlcat(buf, "\016", len); /* SO */
|
|
}
|
|
if (!(attr & GRID_ATTR_CHARSET) && (lastattr & GRID_ATTR_CHARSET)) {
|
|
if (escape_c0)
|
|
strlcat(buf, "\\017", len); /* SI */
|
|
else
|
|
strlcat(buf, "\017", len); /* SI */
|
|
}
|
|
}
|
|
|
|
/* Convert cells into a string. */
|
|
char *
|
|
grid_string_cells(struct grid *gd, u_int px, u_int py, u_int nx,
|
|
struct grid_cell **lastgc, int with_codes, int escape_c0, int trim)
|
|
{
|
|
const struct grid_cell *gc;
|
|
static struct grid_cell lastgc1;
|
|
struct utf8_data ud;
|
|
const char* data;
|
|
char *buf, code[128];
|
|
size_t len, off, size, codelen;
|
|
u_int xx;
|
|
const struct grid_line *gl;
|
|
|
|
GRID_DEBUG(gd, "px=%u, py=%u, nx=%u", px, py, nx);
|
|
|
|
if (lastgc != NULL && *lastgc == NULL) {
|
|
memcpy(&lastgc1, &grid_default_cell, sizeof lastgc1);
|
|
*lastgc = &lastgc1;
|
|
}
|
|
|
|
len = 128;
|
|
buf = xmalloc(len);
|
|
off = 0;
|
|
|
|
gl = grid_peek_line(gd, py);
|
|
for (xx = px; xx < px + nx; xx++) {
|
|
if (gl == NULL || xx >= gl->cellsize)
|
|
break;
|
|
gc = &gl->celldata[xx];
|
|
if (gc->flags & GRID_FLAG_PADDING)
|
|
continue;
|
|
grid_cell_get(gc, &ud);
|
|
|
|
if (with_codes) {
|
|
grid_string_cells_code(*lastgc, gc, code, sizeof code,
|
|
escape_c0);
|
|
codelen = strlen(code);
|
|
memcpy(*lastgc, gc, sizeof *gc);
|
|
} else
|
|
codelen = 0;
|
|
|
|
data = ud.data;
|
|
size = ud.size;
|
|
if (escape_c0 && size == 1 && *data == '\\') {
|
|
data = "\\\\";
|
|
size = 2;
|
|
}
|
|
|
|
while (len < off + size + codelen + 1) {
|
|
buf = xrealloc(buf, 2, len);
|
|
len *= 2;
|
|
}
|
|
|
|
if (codelen != 0) {
|
|
memcpy(buf + off, code, codelen);
|
|
off += codelen;
|
|
}
|
|
memcpy(buf + off, data, size);
|
|
off += size;
|
|
}
|
|
|
|
if (trim) {
|
|
while (off > 0 && buf[off - 1] == ' ')
|
|
off--;
|
|
}
|
|
buf[off] = '\0';
|
|
|
|
return (buf);
|
|
}
|
|
|
|
/*
|
|
* Duplicate a set of lines between two grids. If there aren't enough lines in
|
|
* either source or destination, the number of lines is limited to the number
|
|
* available.
|
|
*/
|
|
void
|
|
grid_duplicate_lines(struct grid *dst, u_int dy, struct grid *src, u_int sy,
|
|
u_int ny)
|
|
{
|
|
struct grid_line *dstl, *srcl;
|
|
u_int yy;
|
|
|
|
GRID_DEBUG(src, "dy=%u, sy=%u, ny=%u", dy, sy, ny);
|
|
|
|
if (dy + ny > dst->hsize + dst->sy)
|
|
ny = dst->hsize + dst->sy - dy;
|
|
if (sy + ny > src->hsize + src->sy)
|
|
ny = src->hsize + src->sy - sy;
|
|
grid_clear_lines(dst, dy, ny);
|
|
|
|
for (yy = 0; yy < ny; yy++) {
|
|
srcl = &src->linedata[sy];
|
|
dstl = &dst->linedata[dy];
|
|
|
|
memcpy(dstl, srcl, sizeof *dstl);
|
|
if (srcl->cellsize != 0) {
|
|
dstl->celldata = xcalloc(
|
|
srcl->cellsize, sizeof *dstl->celldata);
|
|
memcpy(dstl->celldata, srcl->celldata,
|
|
srcl->cellsize * sizeof *dstl->celldata);
|
|
}
|
|
|
|
sy++;
|
|
dy++;
|
|
}
|
|
}
|
|
|
|
/* Join line data. */
|
|
void
|
|
grid_reflow_join(struct grid *dst, u_int *py, struct grid_line *src_gl,
|
|
u_int new_x)
|
|
{
|
|
struct grid_line *dst_gl = &dst->linedata[(*py) - 1];
|
|
u_int left, to_copy, ox, nx;
|
|
|
|
/* How much is left on the old line? */
|
|
left = new_x - dst_gl->cellsize;
|
|
|
|
/* Work out how much to append. */
|
|
to_copy = src_gl->cellsize;
|
|
if (to_copy > left)
|
|
to_copy = left;
|
|
ox = dst_gl->cellsize;
|
|
nx = ox + to_copy;
|
|
|
|
/* Resize the destination line. */
|
|
dst_gl->celldata = xrealloc(dst_gl->celldata, nx,
|
|
sizeof *dst_gl->celldata);
|
|
dst_gl->cellsize = nx;
|
|
|
|
/* Append as much as possible. */
|
|
memcpy(&dst_gl->celldata[ox], &src_gl->celldata[0],
|
|
to_copy * sizeof src_gl->celldata[0]);
|
|
|
|
/* If there is any left in the source, split it. */
|
|
if (src_gl->cellsize > to_copy) {
|
|
dst_gl->flags |= GRID_LINE_WRAPPED;
|
|
|
|
src_gl->cellsize -= to_copy;
|
|
grid_reflow_split(dst, py, src_gl, new_x, to_copy);
|
|
}
|
|
}
|
|
|
|
/* Split line data. */
|
|
void
|
|
grid_reflow_split(struct grid *dst, u_int *py, struct grid_line *src_gl,
|
|
u_int new_x, u_int offset)
|
|
{
|
|
struct grid_line *dst_gl = NULL;
|
|
u_int to_copy;
|
|
|
|
/* Loop and copy sections of the source line. */
|
|
while (src_gl->cellsize > 0) {
|
|
/* Create new line. */
|
|
if (*py >= dst->hsize + dst->sy)
|
|
grid_scroll_history(dst);
|
|
dst_gl = &dst->linedata[*py];
|
|
(*py)++;
|
|
|
|
/* How much should we copy? */
|
|
to_copy = new_x;
|
|
if (to_copy > src_gl->cellsize)
|
|
to_copy = src_gl->cellsize;
|
|
|
|
/* Expand destination line. */
|
|
dst_gl->celldata = xmalloc(to_copy * sizeof *dst_gl->celldata);
|
|
dst_gl->cellsize = to_copy;
|
|
dst_gl->flags |= GRID_LINE_WRAPPED;
|
|
|
|
/* Copy the data. */
|
|
memcpy(&dst_gl->celldata[0], &src_gl->celldata[offset],
|
|
to_copy * sizeof dst_gl->celldata[0]);
|
|
|
|
/* Move offset and reduce old line size. */
|
|
offset += to_copy;
|
|
src_gl->cellsize -= to_copy;
|
|
}
|
|
|
|
/* Last line is not wrapped. */
|
|
if (dst_gl != NULL)
|
|
dst_gl->flags &= ~GRID_LINE_WRAPPED;
|
|
}
|
|
|
|
/* Move line data. */
|
|
void
|
|
grid_reflow_move(struct grid *dst, u_int *py, struct grid_line *src_gl)
|
|
{
|
|
struct grid_line *dst_gl;
|
|
|
|
/* Create new line. */
|
|
if (*py >= dst->hsize + dst->sy)
|
|
grid_scroll_history(dst);
|
|
dst_gl = &dst->linedata[*py];
|
|
(*py)++;
|
|
|
|
/* Copy the old line. */
|
|
memcpy(dst_gl, src_gl, sizeof *dst_gl);
|
|
dst_gl->flags &= ~GRID_LINE_WRAPPED;
|
|
|
|
/* Clear old line. */
|
|
src_gl->celldata = NULL;
|
|
}
|
|
|
|
/*
|
|
* Reflow lines from src grid into dst grid of width new_x. Returns number of
|
|
* lines fewer in the visible area. The source grid is destroyed.
|
|
*/
|
|
u_int
|
|
grid_reflow(struct grid *dst, struct grid *src, u_int new_x)
|
|
{
|
|
u_int py, sy, line;
|
|
int previous_wrapped;
|
|
struct grid_line *src_gl;
|
|
|
|
py = 0;
|
|
sy = src->sy;
|
|
|
|
previous_wrapped = 0;
|
|
for (line = 0; line < sy + src->hsize; line++) {
|
|
src_gl = src->linedata + line;
|
|
if (!previous_wrapped) {
|
|
/* Wasn't wrapped. If smaller, move to destination. */
|
|
if (src_gl->cellsize <= new_x)
|
|
grid_reflow_move(dst, &py, src_gl);
|
|
else
|
|
grid_reflow_split(dst, &py, src_gl, new_x, 0);
|
|
} else {
|
|
/* Previous was wrapped. Try to join. */
|
|
grid_reflow_join(dst, &py, src_gl, new_x);
|
|
}
|
|
previous_wrapped = src_gl->flags & GRID_LINE_WRAPPED;
|
|
}
|
|
|
|
grid_destroy(src);
|
|
|
|
if (py > sy)
|
|
return (0);
|
|
return (sy - py);
|
|
}
|