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Virtualized cursor movement and clearing to end of line. Now neither is done

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unless really needed.


git-svn-id: http://svn.irssi.org/repos/irssi/trunk@1966 dbcabf3a-b0e7-0310-adc4-f8d773084564
This commit is contained in:
Timo Sirainen 2001-11-03 15:31:13 +00:00 committed by cras
parent d4d72e5583
commit 3578cea258
1 changed files with 101 additions and 24 deletions
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125
src/fe-text/term-terminfo.c
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@ -36,8 +36,10 @@ struct _TERM_WINDOW {
TERM_WINDOW *root_window;
int term_width, term_height;
char *term_lines_empty; /* 1 if line is entirely empty */
static int vcx, vcy, curs_visible;
static int vcmove, vcx, vcy, curs_visible;
static int crealx, crealy, cforcemove;
static int curs_x, curs_y;
static int last_fg, last_bg, last_attrs;
static int redraw_needed, redraw_tag;
@ -66,7 +68,8 @@ int term_init(void)
last_fg = last_bg = -1;
last_attrs = 0;
vcx = vcy = -1;
vcx = vcy = 0; crealx = crealy = -1;
vcmove = FALSE; cforcemove = TRUE;
curs_visible = TRUE;
current_term = terminfo_core_init(stdin, stdout);
@ -85,6 +88,8 @@ int term_init(void)
term_height = current_term->height;
root_window = term_window_create(0, 0, term_width, term_height);
term_lines_empty = g_new0(char, term_height);
term_common_init();
return TRUE;
}
@ -97,6 +102,36 @@ void term_deinit(void)
terminfo_core_deinit(current_term);
}
static void term_move_real(void)
{
if (vcx != crealx || vcy != crealy || cforcemove) {
if (curs_visible) {
terminfo_set_cursor_visible(FALSE);
curs_visible = FALSE;
}
if (cforcemove) {
crealx = crealy = -1;
cforcemove = FALSE;
}
terminfo_move_relative(crealx, crealy, vcx, vcy);
crealx = vcx; crealy = vcy;
}
vcmove = FALSE;
}
/* Cursor position is unknown - move it immediately to known position */
static void term_move_reset(int x, int y)
{
if (x >= term_width) x = term_width-1;
if (y >= term_height) y = term_height-1;
vcx = x; vcy = y;
cforcemove = TRUE;
term_move_real();
}
/* Resize terminal - if width or height is negative,
the new size is unknown and should be figured out somehow */
void term_resize(int width, int height)
@ -110,10 +145,13 @@ void term_resize(int width, int height)
if (term_width != width || term_height != height) {
term_width = current_term->width = width;
term_height = current_term->height = height;
term_window_move(root_window, 0, 0, term_width, term_height);
term_window_move(root_window, 0, 0, term_width, term_height);
g_free(term_lines_empty);
term_lines_empty = g_new0(char, term_height);
}
vcx = vcy = -1;
term_move_reset(0, 0);
}
void term_resize_final(int width, int height)
@ -135,9 +173,11 @@ void term_force_colors(int set)
/* Clear screen */
void term_clear(void)
{
vcx = vcy = -1;
term_set_color(root_window, 0);
terminfo_clear();
terminfo_clear();
term_move_reset(0, 0);
memset(term_lines_empty, 1, term_height);
}
/* Beep */
@ -193,8 +233,24 @@ void term_window_clear(TERM_WINDOW *window)
/* Scroll window up/down */
void term_window_scroll(TERM_WINDOW *window, int count)
{
vcx = vcy = -1;
terminfo_scroll(window->y, window->y+window->height-1, count);
int y, idx;
terminfo_scroll(window->y, window->y+window->height-1, count);
/* set the newly scrolled lines dirty */
if (count < 0) {
/* scrolling down - dirty the top */
idx = window->y;
count = -count;
} else {
/* scrolling up - dirty the bottom */
idx = window->y+window->height-count;
}
for (y = 0; y < count; y++)
term_lines_empty[idx+y] = FALSE;
term_move_reset(vcx, vcy);
}
/* Change active color */
@ -265,43 +321,63 @@ void term_set_color(TERM_WINDOW *window, int col)
void term_move(TERM_WINDOW *window, int x, int y)
{
int newx, newy;
vcmove = TRUE;
vcx = x+window->x;
vcy = y+window->y;
if (curs_visible) {
terminfo_set_cursor_visible(FALSE);
curs_visible = FALSE;
}
if (vcx >= term_width)
vcx = term_width-1;
if (vcy >= term_height)
vcy = term_height-1;
}
newx = x+window->x;
newy = y+window->y;
if (vcx != newx || vcy != newy) {
terminfo_move_relative(vcx, vcy, newx, newy);
vcx = newx; vcy = newy;
static void term_printed_text(int count)
{
term_lines_empty[vcy] = FALSE;
/* if we continued writing past the line, wrap to next line.
However, next term_move() really shouldn't try to cache
the move, otherwise terminals would try to combine the
last word in upper line with first word in lower line. */
cforcemove = TRUE;
vcx += count;
while (vcx >= term_width) {
vcx -= term_width;
if (vcy < term_height) vcy++;
if (vcx > 0) term_lines_empty[vcy] = FALSE;
}
}
void term_addch(TERM_WINDOW *window, int chr)
{
if (vcmove) term_move_real();
putc(chr, window->term->out);
vcx++; /* ignore if cursor gets past the screen */
term_printed_text(1);
}
void term_addstr(TERM_WINDOW *window, char *str)
{
if (vcmove) term_move_real();
fputs(str, window->term->out);
vcx += strlen(str); /* ignore if cursor gets past the screen */
term_printed_text(strlen(str));
}
void term_clrtoeol(TERM_WINDOW *window)
{
/* clrtoeol() doesn't necessarily understand colors */
if (last_fg == -1 && last_bg == -1 &&
(last_attrs & (ATTR_UNDERLINE|ATTR_REVERSE)) == 0) {
/* clrtoeol() doesn't necessarily understand colors */
terminfo_clrtoeol();
if (!term_lines_empty[vcy]) {
if (vcmove) term_move_real();
terminfo_clrtoeol();
if (vcx == 0) term_lines_empty[vcy] = TRUE;
}
} else if (vcx < term_width) {
/* we'll need to fill the line ourself. */
if (vcmove) term_move_real();
terminfo_repeat(' ', term_width-vcx);
terminfo_move(vcx, vcy);
term_lines_empty[vcy] = FALSE;
}
}
@ -316,8 +392,9 @@ void term_refresh(TERM_WINDOW *window)
if (freeze_counter > 0)
return;
if (vcx != curs_x || vcy != curs_y)
term_move(root_window, curs_x, curs_y);
term_move(root_window, curs_x, curs_y);
term_move_real();
if (!curs_visible) {
terminfo_set_cursor_visible(TRUE);
curs_visible = TRUE;