tmux/screen-display.c
Nicholas Marriott 99df48d70f Trimify.
2008-06-18 22:21:51 +00:00

458 lines
11 KiB
C

/* $Id: screen-display.c,v 1.17 2008-06-18 22:21:51 nicm Exp $ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
*
* 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"
/* Set a cell. */
void
screen_display_set_cell(
struct screen *s, u_int px, u_int py, u_char data, u_char attr, u_char colr)
{
screen_set_cell(s, screen_x(s, px), screen_y(s, py), data, attr, colr);
}
/* Create a region of lines. */
void
screen_display_make_lines(struct screen *s, u_int py, u_int ny)
{
if (ny == 0 || !screen_in_y(s, py) || !screen_in_y(s, py + ny - 1)) {
SCREEN_DEBUG2(s, py, ny);
return;
}
screen_make_lines(s, screen_y(s, py), ny);
if (s->attr != SCREEN_DEFATTR || s->colr != SCREEN_DEFCOLR) {
screen_display_fill_area(s, 0, py,
screen_size_x(s), ny, SCREEN_DEFDATA, s->attr, s->colr);
}
}
/* Free a region of lines. */
void
screen_display_free_lines(struct screen *s, u_int py, u_int ny)
{
if (ny == 0 || !screen_in_y(s, py) || !screen_in_y(s, py + ny - 1)) {
SCREEN_DEBUG2(s, py, ny);
return;
}
screen_free_lines(s, screen_y(s, py), ny);
}
/* Move a set of lines. */
void
screen_display_move_lines(struct screen *s, u_int dy, u_int py, u_int ny)
{
if (ny == 0 || !screen_in_y(s, py) || !screen_in_y(s, py + ny - 1)) {
SCREEN_DEBUG3(s, dy, py, ny);
return;
}
if (!screen_in_y(s, dy) || !screen_in_y(s, dy + ny - 1) || dy == py) {
SCREEN_DEBUG3(s, dy, py, ny);
return;
}
screen_move_lines(s, screen_y(s, dy), screen_y(s, py), ny);
}
/* Fill a set of cells. */
void
screen_display_fill_area(struct screen *s, u_int px, u_int py,
u_int nx, u_int ny, u_char data, u_char attr, u_char colr)
{
if (nx == 0 || ny == 0) {
SCREEN_DEBUG4(s, px, py, nx, ny);
return;
}
if (!screen_in_x(s, px) || !screen_in_y(s, py)) {
SCREEN_DEBUG4(s, px, py, nx, ny);
return;
}
if (!screen_in_x(s, px + nx - 1) || !screen_in_y(s, py + ny - 1)) {
SCREEN_DEBUG4(s, px, py, nx, ny);
return;
}
screen_fill_area(
s, screen_x(s, px), screen_y(s, py), nx, ny, data, attr, colr);
}
/* Scroll region up. */
void
screen_display_scroll_region_up(struct screen *s)
{
u_int ny, sy;
/*
* If the region is the entire screen, this is easy-peasy. Allocate
* a new line and adjust the history size.
* XXX should this be done somewhere else?
*/
if (s->rupper == 0 && s->rlower == screen_last_y(s)) {
if (s->hsize == s->hlimit) {
/* If the limit is hit, free 10% and shift up. */
ny = s->hlimit / 10;
if (ny < 1)
ny = 1;
sy = screen_size_y(s) + s->hsize;
screen_free_lines(s, 0, ny);
screen_move_lines(s, 0, ny, sy - ny);
s->hsize -= ny;
}
s->hsize++;
sy = screen_size_y(s) + s->hsize;
s->grid_data = xrealloc(s->grid_data, sy, sizeof *s->grid_data);
s->grid_attr = xrealloc(s->grid_attr, sy, sizeof *s->grid_attr);
s->grid_colr = xrealloc(s->grid_colr, sy, sizeof *s->grid_colr);
s->grid_size = xrealloc(s->grid_size, sy, sizeof *s->grid_size);
screen_display_make_lines(s, screen_last_y(s), 1);
return;
}
/*
* Scroll scrolling region up:
* - delete rupper
* - move rupper + 1 to rlower to rupper
* - make new line at rlower
*
* Example: region is 12 to 24.
* rlower = 24, rupper = 12
* screen_free_lines(s, 12, 1);
* screen_move_lines(s, 12, 13, 12);
* screen_make_lines(s, 24, 1);
*/
screen_display_free_lines(s, s->rupper, 1);
if (s->rupper != s->rlower) {
screen_display_move_lines(s,
s->rupper, s->rupper + 1, s->rlower - s->rupper);
}
screen_display_make_lines(s, s->rlower, 1);
}
/* Scroll region down. */
void
screen_display_scroll_region_down(struct screen *s)
{
/*
* Scroll scrolling region down:
* - delete rlower
* - move rupper to rlower - 1 to rupper + 1
* - make new line at rupper
*
* Example: region is 12 to 24.
* rlower = 24, rupper = 12
* screen_free_lines(s, 24, 1);
* screen_move_lines(s, 13, 12, 12);
* screen_make_lines(s, 12, 1);
*/
screen_display_free_lines(s, s->rlower, 1);
if (s->rupper != s->rlower) {
screen_display_move_lines(s,
s->rupper + 1, s->rupper, s->rlower - s->rupper);
}
screen_display_make_lines(s, s->rupper, 1);
}
/* Insert lines. */
void
screen_display_insert_lines(struct screen *s, u_int py, u_int ny)
{
if (!screen_in_y(s, py)) {
SCREEN_DEBUG2(s, py, ny);
return;
}
if (ny == 0) {
SCREEN_DEBUG2(s, py, ny);
return;
}
if (py + ny > screen_last_y(s))
ny = screen_size_y(s) - py;
if (ny == 0) {
SCREEN_DEBUG2(s, py, ny);
return;
}
/*
* Insert range of ny lines at py:
* - Free ny lines from end of screen.
* - Move from py to end of screen - ny to py + ny.
* - Create ny lines at py.
*
* Example: insert 2 lines at 4.
* sy = 10, py = 4, ny = 2
* screen_free_lines(s, 8, 2); - delete lines 8,9
* screen_move_lines(s, 6, 4, 4); - move 4,5,6,7 to 6,7,8,9
* screen_make_lines(s, 4, 2); - make lines 4,5
*/
screen_display_free_lines(s, screen_size_y(s) - ny, ny);
if (py + ny != screen_size_y(s)) {
screen_display_move_lines(
s, py + ny, py, screen_size_y(s) - py - ny);
}
screen_display_make_lines(s, py, ny);
}
/* Insert lines in region. */
void
screen_display_insert_lines_region(struct screen *s, u_int py, u_int ny)
{
if (!screen_in_region(s, py)) {
SCREEN_DEBUG2(s, py, ny);
return;
}
if (ny == 0) {
SCREEN_DEBUG2(s, py, ny);
return;
}
if (py + ny > s->rlower)
ny = (s->rlower + 1) - py;
if (ny == 0) {
SCREEN_DEBUG2(s, py, ny);
return;
}
/*
* Insert range of ny lines at py:
* - Free ny lines from end of screen.
* - Move from py to end of screen - ny to py + ny.
* - Create ny lines at py.
*
* Example: insert 2 lines at 4.
* ryu = 11, ryl = 16, py = 13, ny = 2
* screen_free_lines(s, 15, 2); - delete lines 15,16
* screen_move_lines(s, 13, 15, 2);- move 13,14 to 15,16
* screen_make_lines(s, 13, 2); - make lines 13,14
*/
screen_display_free_lines(s, (s->rlower + 1) - ny, ny);
if (py + ny != s->rlower + 1) {
screen_display_move_lines(
s, py + ny, py, (s->rlower + 1) - py - ny);
}
screen_display_make_lines(s, py, ny);
}
/* Delete lines. */
void
screen_display_delete_lines(struct screen *s, u_int py, u_int ny)
{
if (!screen_in_y(s, py)) {
SCREEN_DEBUG2(s, py, ny);
return;
}
if (ny == 0) {
SCREEN_DEBUG2(s, py, ny);
return;
}
if (py + ny > screen_last_y(s))
ny = screen_size_y(s) - py;
if (ny == 0) {
SCREEN_DEBUG2(s, py, ny);
return;
}
/*
* Delete range of ny lines at py:
* - Free ny lines at py.
* - Move from py + ny to end of screen to py.
* - Free and recreate last ny lines.
*
* Example: delete lines 3,4.
* sy = 10, py = 3, ny = 2
* screen_free_lines(s, 3, 2); - delete lines 3,4
* screen_move_lines(s, 3, 5, 5); - move 5,6,7,8,9 to 3
* screen_make_lines(s, 8, 2); - make lines 8,9
*/
screen_display_free_lines(s, py, ny);
if (py + ny != screen_size_y(s)) {
screen_display_move_lines(
s, py, py + ny, screen_size_y(s) - py - ny);
}
screen_display_make_lines(s, screen_size_y(s) - ny, ny);
}
/* Delete lines inside scroll region. */
void
screen_display_delete_lines_region(struct screen *s, u_int py, u_int ny)
{
if (!screen_in_region(s, py)) {
SCREEN_DEBUG2(s, py, ny);
return;
}
if (ny == 0) {
SCREEN_DEBUG2(s, py, ny);
return;
}
if (py + ny > s->rlower)
ny = (s->rlower + 1) - py;
if (ny == 0)
return;
/*
* Delete range of ny lines at py:
* - Free ny lines at py.
* - Move from py + ny to end of region to py.
* - Free and recreate last ny lines.
*
* Example: delete lines 13,14.
* ryu = 11, ryl = 16, py = 13, ny = 2
* screen_free_lines(s, 13, 2); - delete lines 13,14
* screen_move_lines(s, 15, 16, 2);- move 15,16 to 13
* screen_make_lines(s, 15, 16); - make lines 15,16
*/
screen_display_free_lines(s, py, ny);
if (py + ny != s->rlower + 1) {
screen_display_move_lines(
s, py, py + ny, (s->rlower + 1) - py - ny);
}
screen_display_make_lines(s, (s->rlower + 1) - ny, ny);
}
/* Insert characters. */
void
screen_display_insert_characters(struct screen *s, u_int px, u_int py, u_int nx)
{
u_int mx;
if (!screen_in_x(s, px) || !screen_in_y(s, py)) {
SCREEN_DEBUG3(s, px, py, nx);
return;
}
if (px + nx > screen_last_x(s))
nx = screen_last_x(s) - px;
py = screen_y(s, py);
/* XXX Cheat and make the line a full line. */
if (s->grid_size[py] < screen_size_x(s))
screen_expand_line(s, py, screen_size_x(s));
/*
* Inserting a range of nx at px.
*
* - Move sx - (px + nx) from px to px + nx.
* - Clear the range at px to px + nx.
*/
if (px + nx != screen_last_x(s)) {
mx = screen_last_x(s) - (px + nx);
memmove(&s->grid_data[py][px + nx], &s->grid_data[py][px], mx);
memmove(&s->grid_attr[py][px + nx], &s->grid_attr[py][px], mx);
memmove(&s->grid_colr[py][px + nx], &s->grid_colr[py][px], mx);
}
memset(&s->grid_data[py][px], SCREEN_DEFDATA, nx);
memset(&s->grid_attr[py][px], s->attr, nx);
memset(&s->grid_colr[py][px], s->colr, nx);
}
/* Delete characters. */
void
screen_display_delete_characters(struct screen *s, u_int px, u_int py, u_int nx)
{
u_int mx;
if (!screen_in_x(s, px) || !screen_in_y(s, py)) {
SCREEN_DEBUG3(s, px, py, nx);
return;
}
if (px + nx > screen_last_x(s))
nx = screen_last_x(s) - px;
py = screen_y(s, py);
/* XXX Cheat and make the line a full line. */
if (s->grid_size[py] < screen_size_x(s))
screen_expand_line(s, py, screen_size_x(s));
/*
* Deleting the range from px to px + nx.
*
* - Move sx - (px + nx) from px + nx to px.
* - Clear the range from sx - nx to sx.
*/
if (px + nx != screen_last_x(s)) {
mx = screen_last_x(s) - (px + nx);
memmove(&s->grid_data[py][px], &s->grid_data[py][px + nx], mx);
memmove(&s->grid_attr[py][px], &s->grid_attr[py][px + nx], mx);
memmove(&s->grid_colr[py][px], &s->grid_colr[py][px + nx], mx);
}
memset(&s->grid_data[py][screen_size_x(s) - nx], SCREEN_DEFDATA, nx);
memset(&s->grid_attr[py][screen_size_x(s) - nx], s->attr, nx);
memset(&s->grid_colr[py][screen_size_x(s) - nx], s->colr, nx);
}
/* Fill cells from another screen, with an offset. */
void
screen_display_copy_area(struct screen *dst, struct screen *src,
u_int px, u_int py, u_int nx, u_int ny, u_int ox, u_int oy)
{
u_int i, j;
u_char data, attr, colr;
if (nx == 0 || ny == 0) {
SCREEN_DEBUG4(dst, px, py, nx, ny);
return;
}
if (!screen_in_x(dst, px) || !screen_in_y(dst, py)) {
SCREEN_DEBUG4(dst, px, py, nx, ny);
return;
}
if (!screen_in_x(dst, px + nx - 1) || !screen_in_y(dst, py + ny - 1)) {
SCREEN_DEBUG4(dst, px, py, nx, ny);
return;
}
for (i = py; i < py + ny; i++) {
for (j = px; j < px + nx; j++) {
screen_get_cell(src,
screen_x(src, j) + ox, screen_y(src, i) - oy,
&data, &attr, &colr);
screen_display_set_cell(dst, j, i, data, attr, colr);
}
}
}