mibi88
/
PythonExtra
forked from Lephenixnoir/PythonExtra
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

pe: add shell scrollbar (render only)

This commit is contained in:
Lephenixnoir 2022-12-04 17:52:18 +01:00 committed by mibi88
parent 8f5af62f9f
commit 40a2de1a5f
1 changed files with 40 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

57
ports/sh/console.c
View File

@ -171,34 +171,45 @@ bool console_new_line(console_t *cons)
void console_clean_backlog(console_t *cons)
{
int total_size = 0, i = cons->line_count;
/* Find how many lines we can keep while using at most cons->backlog_size
bytes to store them. The console must always have at least one line. */
int first_kept = cons->line_count;
int line_size = 0;
int total_size = 0;
/* Determine how many lines (starting from the end) we can fit */
while(total_size < cons->backlog_size) {
i--;
total_size += cons->lines[i].size;
do {
total_size += line_size;
first_kept--;
line_size = cons->lines[first_kept].size;
}
while(first_kept > 0 && total_size + line_size <= cons->backlog_size);
/* Make sure to keep at least one line */
int delete_until = i + (i < cons->line_count - 1);
int remains = cons->line_count - delete_until;
/* Remove `delete_until` lines */
for(int j = 0; j < delete_until; j++)
/* Remove old lines */
for(int j = 0; j < first_kept; j++)
console_line_deinit(&cons->lines[j]);
/* Don't realloc() yet, it will happen soon enough anyway */
memmove(cons->lines, cons->lines + delete_until, remains);
cons->line_count = remains;
memmove(cons->lines, cons->lines + first_kept,
(cons->line_count - first_kept) * sizeof cons->lines[0]);
cons->line_count -= first_kept;
}
void console_render(int x, int y, console_t const *cons, int w, int dy,
int lines)
void console_render(int x, int y0, console_t const *cons, int w, int dy,
int visible_lines)
{
int watermark = lines;
int total_lines = 0;
int watermark = visible_lines;
int y = y0;
#ifdef FX9860G
int text_w = w - 2, scroll_spacing = 1, scroll_w = 1;
#else
int text_w = w - 4, scroll_spacing = 2, scroll_w = 2;
#endif
for(int i = 0; i < cons->line_count; i++) {
console_line_update_render_lines(&cons->lines[i], w);
total_lines += cons->lines[i].render_lines;
watermark -= cons->lines[i].render_lines;
}
@ -208,10 +219,22 @@ void console_render(int x, int y, console_t const *cons, int w, int dy,
bool show_cursor = (i == cons->line_count - 1);
if(watermark + line->render_lines > 0)
y = console_line_render(x, y, line, w, dy, -watermark,
y = console_line_render(x, y, line, text_w, dy, -watermark,
show_cursor ? cons->cursor : -1);
watermark += line->render_lines;
}
/* Scrollbar */
if(total_lines > visible_lines) {
int first_shown = total_lines - visible_lines;
int h = dy * visible_lines;
int y1 = y0 + h * first_shown / total_lines;
int y2 = y0 + h * (first_shown + visible_lines) / total_lines;
drect(x + text_w + scroll_spacing, y1,
x + text_w + scroll_spacing + scroll_w - 1, y2,
C_BLACK);
}
}
void console_clear_render_flag(console_t *cons)