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464 lines
12 KiB
C
464 lines
12 KiB
C
/* $Id: screen-display.c,v 1.19 2008-09-08 17:40:50 nicm Exp $ */
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/*
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* Copyright (c) 2007 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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/* Set a cell. */
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void
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screen_display_set_cell(struct screen *s,
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u_int px, u_int py, u_char data, u_char attr, u_char fg, u_char bg)
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{
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screen_set_cell(
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s, screen_x(s, px), screen_y(s, py), data, attr, fg, bg);
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}
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/* Create a region of lines. */
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void
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screen_display_make_lines(struct screen *s, u_int py, u_int ny)
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{
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if (ny == 0 || !screen_in_y(s, py) || !screen_in_y(s, py + ny - 1)) {
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SCREEN_DEBUG2(s, py, ny);
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return;
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}
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screen_make_lines(s, screen_y(s, py), ny);
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if (s->attr != 0 || s->fg != 8 || s->bg != 8) {
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screen_display_fill_area(
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s, 0, py, screen_size_x(s), ny, ' ', s->attr, s->fg, s->bg);
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}
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}
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/* Free a region of lines. */
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void
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screen_display_free_lines(struct screen *s, u_int py, u_int ny)
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{
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if (ny == 0 || !screen_in_y(s, py) || !screen_in_y(s, py + ny - 1)) {
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SCREEN_DEBUG2(s, py, ny);
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return;
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}
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screen_free_lines(s, screen_y(s, py), ny);
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}
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/* Move a set of lines. */
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void
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screen_display_move_lines(struct screen *s, u_int dy, u_int py, u_int ny)
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{
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if (ny == 0 || !screen_in_y(s, py) || !screen_in_y(s, py + ny - 1)) {
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SCREEN_DEBUG3(s, dy, py, ny);
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return;
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}
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if (!screen_in_y(s, dy) || !screen_in_y(s, dy + ny - 1) || dy == py) {
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SCREEN_DEBUG3(s, dy, py, ny);
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return;
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}
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screen_move_lines(s, screen_y(s, dy), screen_y(s, py), ny);
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}
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/* Fill a set of cells. */
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void
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screen_display_fill_area(struct screen *s, u_int px, u_int py,
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u_int nx, u_int ny, u_char data, u_char attr, u_char fg, u_char bg)
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{
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if (nx == 0 || ny == 0) {
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SCREEN_DEBUG4(s, px, py, nx, ny);
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return;
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}
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if (!screen_in_x(s, px) || !screen_in_y(s, py)) {
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SCREEN_DEBUG4(s, px, py, nx, ny);
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return;
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}
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if (!screen_in_x(s, px + nx - 1) || !screen_in_y(s, py + ny - 1)) {
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SCREEN_DEBUG4(s, px, py, nx, ny);
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return;
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}
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screen_fill_area(
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s, screen_x(s, px), screen_y(s, py), nx, ny, data, attr, fg, bg);
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}
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/* Scroll region up. */
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void
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screen_display_scroll_region_up(struct screen *s)
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{
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u_int ny, sy;
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/*
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* If the region is the entire screen, this is easy-peasy. Allocate
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* a new line and adjust the history size.
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* XXX should this be done somewhere else?
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*/
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if (s->rupper == 0 && s->rlower == screen_last_y(s)) {
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if (s->hsize == s->hlimit) {
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/* If the limit is hit, free 10% and shift up. */
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ny = s->hlimit / 10;
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if (ny < 1)
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ny = 1;
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sy = screen_size_y(s) + s->hsize;
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screen_free_lines(s, 0, ny);
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screen_move_lines(s, 0, ny, sy - ny);
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s->hsize -= ny;
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}
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s->hsize++;
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sy = screen_size_y(s) + s->hsize;
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s->grid_data = xrealloc(s->grid_data, sy, sizeof *s->grid_data);
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s->grid_attr = xrealloc(s->grid_attr, sy, sizeof *s->grid_attr);
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s->grid_fg = xrealloc(s->grid_fg, sy, sizeof *s->grid_fg);
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s->grid_bg = xrealloc(s->grid_bg, sy, sizeof *s->grid_fg);
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s->grid_size = xrealloc(s->grid_size, sy, sizeof *s->grid_size);
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screen_display_make_lines(s, screen_last_y(s), 1);
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return;
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}
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/*
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* Scroll scrolling region up:
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* - delete rupper
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* - move rupper + 1 to rlower to rupper
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* - make new line at rlower
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*
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* Example: region is 12 to 24.
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* rlower = 24, rupper = 12
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* screen_free_lines(s, 12, 1);
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* screen_move_lines(s, 12, 13, 12);
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* screen_make_lines(s, 24, 1);
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*/
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screen_display_free_lines(s, s->rupper, 1);
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if (s->rupper != s->rlower) {
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screen_display_move_lines(s,
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s->rupper, s->rupper + 1, s->rlower - s->rupper);
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}
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screen_display_make_lines(s, s->rlower, 1);
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}
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/* Scroll region down. */
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void
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screen_display_scroll_region_down(struct screen *s)
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{
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/*
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* Scroll scrolling region down:
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* - delete rlower
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* - move rupper to rlower - 1 to rupper + 1
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* - make new line at rupper
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*
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* Example: region is 12 to 24.
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* rlower = 24, rupper = 12
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* screen_free_lines(s, 24, 1);
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* screen_move_lines(s, 13, 12, 12);
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* screen_make_lines(s, 12, 1);
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*/
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screen_display_free_lines(s, s->rlower, 1);
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if (s->rupper != s->rlower) {
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screen_display_move_lines(s,
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s->rupper + 1, s->rupper, s->rlower - s->rupper);
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}
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screen_display_make_lines(s, s->rupper, 1);
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}
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/* Insert lines. */
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void
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screen_display_insert_lines(struct screen *s, u_int py, u_int ny)
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{
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if (!screen_in_y(s, py)) {
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SCREEN_DEBUG2(s, py, ny);
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return;
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}
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if (ny == 0) {
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SCREEN_DEBUG2(s, py, ny);
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return;
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}
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if (py + ny > screen_last_y(s))
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ny = screen_size_y(s) - py;
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if (ny == 0) {
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SCREEN_DEBUG2(s, py, ny);
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return;
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}
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/*
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* Insert range of ny lines at py:
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* - Free ny lines from end of screen.
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* - Move from py to end of screen - ny to py + ny.
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* - Create ny lines at py.
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*
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* Example: insert 2 lines at 4.
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* sy = 10, py = 4, ny = 2
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* screen_free_lines(s, 8, 2); - delete lines 8,9
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* screen_move_lines(s, 6, 4, 4); - move 4,5,6,7 to 6,7,8,9
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* screen_make_lines(s, 4, 2); - make lines 4,5
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*/
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screen_display_free_lines(s, screen_size_y(s) - ny, ny);
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if (py + ny != screen_size_y(s)) {
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screen_display_move_lines(
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s, py + ny, py, screen_size_y(s) - py - ny);
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}
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screen_display_make_lines(s, py, ny);
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}
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/* Insert lines in region. */
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void
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screen_display_insert_lines_region(struct screen *s, u_int py, u_int ny)
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{
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if (!screen_in_region(s, py)) {
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SCREEN_DEBUG2(s, py, ny);
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return;
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}
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if (ny == 0) {
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SCREEN_DEBUG2(s, py, ny);
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return;
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}
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if (py + ny > s->rlower)
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ny = (s->rlower + 1) - py;
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if (ny == 0) {
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SCREEN_DEBUG2(s, py, ny);
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return;
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}
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/*
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* Insert range of ny lines at py:
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* - Free ny lines from end of screen.
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* - Move from py to end of screen - ny to py + ny.
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* - Create ny lines at py.
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*
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* Example: insert 2 lines at 4.
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* ryu = 11, ryl = 16, py = 13, ny = 2
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* screen_free_lines(s, 15, 2); - delete lines 15,16
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* screen_move_lines(s, 13, 15, 2);- move 13,14 to 15,16
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* screen_make_lines(s, 13, 2); - make lines 13,14
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*/
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screen_display_free_lines(s, (s->rlower + 1) - ny, ny);
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if (py + ny != s->rlower + 1) {
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screen_display_move_lines(
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s, py + ny, py, (s->rlower + 1) - py - ny);
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}
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screen_display_make_lines(s, py, ny);
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}
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/* Delete lines. */
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void
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screen_display_delete_lines(struct screen *s, u_int py, u_int ny)
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{
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if (!screen_in_y(s, py)) {
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SCREEN_DEBUG2(s, py, ny);
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return;
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}
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if (ny == 0) {
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SCREEN_DEBUG2(s, py, ny);
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return;
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}
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if (py + ny > screen_last_y(s))
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ny = screen_size_y(s) - py;
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if (ny == 0) {
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SCREEN_DEBUG2(s, py, ny);
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return;
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}
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/*
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* Delete range of ny lines at py:
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* - Free ny lines at py.
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* - Move from py + ny to end of screen to py.
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* - Free and recreate last ny lines.
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*
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* Example: delete lines 3,4.
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* sy = 10, py = 3, ny = 2
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* screen_free_lines(s, 3, 2); - delete lines 3,4
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* screen_move_lines(s, 3, 5, 5); - move 5,6,7,8,9 to 3
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* screen_make_lines(s, 8, 2); - make lines 8,9
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*/
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screen_display_free_lines(s, py, ny);
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if (py + ny != screen_size_y(s)) {
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screen_display_move_lines(
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s, py, py + ny, screen_size_y(s) - py - ny);
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}
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screen_display_make_lines(s, screen_size_y(s) - ny, ny);
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}
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/* Delete lines inside scroll region. */
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void
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screen_display_delete_lines_region(struct screen *s, u_int py, u_int ny)
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{
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if (!screen_in_region(s, py)) {
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SCREEN_DEBUG2(s, py, ny);
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return;
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}
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if (ny == 0) {
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SCREEN_DEBUG2(s, py, ny);
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return;
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}
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if (py + ny > s->rlower)
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ny = (s->rlower + 1) - py;
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if (ny == 0)
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return;
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/*
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* Delete range of ny lines at py:
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* - Free ny lines at py.
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* - Move from py + ny to end of region to py.
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* - Free and recreate last ny lines.
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*
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* Example: delete lines 13,14.
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* ryu = 11, ryl = 16, py = 13, ny = 2
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* screen_free_lines(s, 13, 2); - delete lines 13,14
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* screen_move_lines(s, 15, 16, 2);- move 15,16 to 13
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* screen_make_lines(s, 15, 16); - make lines 15,16
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*/
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screen_display_free_lines(s, py, ny);
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if (py + ny != s->rlower + 1) {
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screen_display_move_lines(
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s, py, py + ny, (s->rlower + 1) - py - ny);
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}
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screen_display_make_lines(s, (s->rlower + 1) - ny, ny);
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}
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/* Insert characters. */
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void
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screen_display_insert_characters(struct screen *s, u_int px, u_int py, u_int nx)
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{
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u_int mx;
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if (!screen_in_x(s, px) || !screen_in_y(s, py)) {
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SCREEN_DEBUG3(s, px, py, nx);
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return;
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}
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if (px + nx > screen_last_x(s))
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nx = screen_last_x(s) - px;
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py = screen_y(s, py);
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/* XXX Cheat and make the line a full line. */
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if (s->grid_size[py] < screen_size_x(s))
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screen_expand_line(s, py, screen_size_x(s));
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/*
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* Inserting a range of nx at px.
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*
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* - Move sx - (px + nx) from px to px + nx.
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* - Clear the range at px to px + nx.
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*/
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if (px + nx != screen_last_x(s)) {
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mx = screen_last_x(s) - (px + nx);
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memmove(&s->grid_data[py][px + nx], &s->grid_data[py][px], mx);
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memmove(&s->grid_attr[py][px + nx], &s->grid_attr[py][px], mx);
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memmove(&s->grid_fg[py][px + nx], &s->grid_fg[py][px], mx);
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memmove(&s->grid_bg[py][px + nx], &s->grid_bg[py][px], mx);
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}
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memset(&s->grid_data[py][px], ' ', nx);
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memset(&s->grid_attr[py][px], s->attr, nx);
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memset(&s->grid_fg[py][px], s->fg, nx);
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memset(&s->grid_bg[py][px], s->bg, nx);
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}
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/* Delete characters. */
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void
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screen_display_delete_characters(struct screen *s, u_int px, u_int py, u_int nx)
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{
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u_int mx;
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if (!screen_in_x(s, px) || !screen_in_y(s, py)) {
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SCREEN_DEBUG3(s, px, py, nx);
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return;
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}
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if (px + nx > screen_last_x(s))
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nx = screen_last_x(s) - px;
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py = screen_y(s, py);
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/* XXX Cheat and make the line a full line. */
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if (s->grid_size[py] < screen_size_x(s))
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screen_expand_line(s, py, screen_size_x(s));
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/*
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* Deleting the range from px to px + nx.
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*
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* - Move sx - (px + nx) from px + nx to px.
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* - Clear the range from sx - nx to sx.
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*/
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if (px + nx != screen_last_x(s)) {
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mx = screen_last_x(s) - (px + nx);
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memmove(&s->grid_data[py][px], &s->grid_data[py][px + nx], mx);
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memmove(&s->grid_attr[py][px], &s->grid_attr[py][px + nx], mx);
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memmove(&s->grid_fg[py][px], &s->grid_fg[py][px + nx], mx);
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memmove(&s->grid_bg[py][px], &s->grid_bg[py][px + nx], mx);
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}
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memset(&s->grid_data[py][screen_size_x(s) - nx], ' ', nx);
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memset(&s->grid_attr[py][screen_size_x(s) - nx], s->attr, nx);
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memset(&s->grid_fg[py][screen_size_x(s) - nx], s->fg, nx);
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memset(&s->grid_bg[py][screen_size_x(s) - nx], s->bg, nx);
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}
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/* Fill cells from another screen, with an offset. */
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void
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screen_display_copy_area(struct screen *dst, struct screen *src,
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u_int px, u_int py, u_int nx, u_int ny, u_int ox, u_int oy)
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{
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u_int i, j;
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u_char data, attr, fg, bg;
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if (nx == 0 || ny == 0) {
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SCREEN_DEBUG4(dst, px, py, nx, ny);
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return;
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}
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if (!screen_in_x(dst, px) || !screen_in_y(dst, py)) {
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SCREEN_DEBUG4(dst, px, py, nx, ny);
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return;
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}
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if (!screen_in_x(dst, px + nx - 1) || !screen_in_y(dst, py + ny - 1)) {
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SCREEN_DEBUG4(dst, px, py, nx, ny);
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return;
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}
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for (i = py; i < py + ny; i++) {
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for (j = px; j < px + nx; j++) {
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screen_get_cell(src,
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screen_x(src, j) + ox, screen_y(src, i) - oy,
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&data, &attr, &fg, &bg);
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screen_display_set_cell(dst, j, i, data, attr, fg, bg);
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}
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}
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}
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