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core: add horizontal scrolling for buffers with free content (command /window scroll_horiz) (task #11112)

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This commit is contained in:
Sebastien Helleu
2011-05-16 15:33:44 +02:00
parent bd1db541f7
commit e3e20f2b60
19 changed files with 301 additions and 139 deletions
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src/gui/gui-window.c
+72
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@@ -180,6 +180,7 @@ gui_window_scroll_init (struct t_gui_window_scroll *window_scroll,
window_scroll->start_line = NULL;
window_scroll->start_line_pos = 0;
window_scroll->scrolling = 0;
window_scroll->start_col = 0;
window_scroll->lines_after = 0;
window_scroll->reset_allowed = 0;
window_scroll->prev_scroll = NULL;
@@ -241,6 +242,7 @@ gui_window_scroll_remove_not_scrolled (struct t_gui_window *window)
&& (ptr_scroll->start_line == NULL)
&& (ptr_scroll->start_line_pos == 0)
&& (ptr_scroll->scrolling == 0)
&& (ptr_scroll->start_col == 0)
&& (ptr_scroll->lines_after == 0)
&& (ptr_scroll->reset_allowed == 0))
{
@@ -958,6 +960,75 @@ gui_window_scroll (struct t_gui_window *window, char *scroll)
}
}
/*
* gui_window_scroll_horiz: horizontal scroll window
*/
void
gui_window_scroll_horiz (struct t_gui_window *window, char *scroll)
{
int direction, percentage, start_col;
char saved_char, *pos, *error;
long number;
if (window->buffer->lines->first_line)
{
direction = 1;
number = 0;
percentage = 0;
/* search direction */
if (scroll[0] == '-')
{
direction = -1;
scroll++;
}
else if (scroll[0] == '+')
{
direction = +1;
scroll++;
}
/* search number and percentage */
pos = scroll;
while (pos && pos[0] && isdigit (pos[0]))
{
pos++;
}
if (pos && (pos > scroll))
{
percentage = (pos[0] == '%') ? 1 : 0;
saved_char = pos[0];
pos[0] = '\0';
error = NULL;
number = strtol (scroll, &error, 10);
if (!error || error[0])
number = 0;
pos[0] = saved_char;
}
/* for percentage, compute number of columns */
if (percentage)
{
number = (window->win_chat_width * number) / 100;
}
/* number must be different from 0 */
if (number == 0)
return;
/* do the horizontal scroll! */
start_col = window->scroll->start_col + (number * direction);
if (start_col < 0)
start_col = 0;
if (start_col != window->scroll->start_col)
{
window->scroll->start_col = start_col;
gui_buffer_ask_chat_refresh (window->buffer, 2);
}
}
}
/*
* gui_window_scroll_previous_highlight: scroll to previous highlight
*/
@@ -1298,6 +1369,7 @@ gui_window_print_log ()
log_printf (" start_line. . . . . : 0x%lx", ptr_scroll->start_line);
log_printf (" start_line_pos. . . : %d", ptr_scroll->start_line_pos);
log_printf (" scrolling . . . . . : %d", ptr_scroll->scrolling);
log_printf (" start_col . . . . . : %d", ptr_scroll->start_col);
log_printf (" lines_after . . . . : %d", ptr_scroll->lines_after);
log_printf (" reset_allowed . . . : %d", ptr_scroll->reset_allowed);
log_printf (" prev_scroll . . . . : 0x%lx", ptr_scroll->prev_scroll);