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GUACAMOLE-871: Add support for hidden cursor (DECTECM)

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This commit is contained in:
Maxime Coste 2019-09-07 13:07:18 +10:00
parent b181026e58
commit 199c2a0961
3 changed files with 42 additions and 20 deletions
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54
src/terminal/terminal.c
View File

@ -202,6 +202,7 @@ void guac_terminal_reset(guac_terminal* term) {
/* Reset cursor location */
term->cursor_row = term->visible_cursor_row = term->saved_cursor_row = 0;
term->cursor_col = term->visible_cursor_col = term->saved_cursor_col = 0;
term->cursor_visible = true;
/* Clear scrollback, buffer, and scroll region */
term->buffer->top = 0;
@ -777,31 +778,42 @@ void guac_terminal_commit_cursor(guac_terminal* term) {
guac_terminal_char* guac_char;
guac_terminal_buffer_row* old_row;
guac_terminal_buffer_row* new_row;
guac_terminal_buffer_row* row;
/* If no change, done */
if (term->visible_cursor_row == term->cursor_row && term->visible_cursor_col == term->cursor_col)
if (term->cursor_visible && term->visible_cursor_row == term->cursor_row && term->visible_cursor_col == term->cursor_col)
return;
/* Get old and new rows with cursor */
new_row = guac_terminal_buffer_get_row(term->buffer, term->cursor_row, term->cursor_col+1);
old_row = guac_terminal_buffer_get_row(term->buffer, term->visible_cursor_row, term->visible_cursor_col+1);
/* Clear cursor if it was visible */
if (term->visible_cursor_row != -1 && term->visible_cursor_col != -1) {
/* Get old row with cursor */
row = guac_terminal_buffer_get_row(term->buffer, term->visible_cursor_row, term->visible_cursor_col+1);
/* Clear cursor */
guac_char = &(old_row->characters[term->visible_cursor_col]);
guac_char->attributes.cursor = false;
guac_terminal_display_set_columns(term->display, term->visible_cursor_row + term->scroll_offset,
term->visible_cursor_col, term->visible_cursor_col, guac_char);
guac_char = &(row->characters[term->visible_cursor_col]);
guac_char->attributes.cursor = false;
guac_terminal_display_set_columns(term->display, term->visible_cursor_row + term->scroll_offset,
term->visible_cursor_col, term->visible_cursor_col, guac_char);
}
/* Set cursor */
guac_char = &(new_row->characters[term->cursor_col]);
guac_char->attributes.cursor = true;
guac_terminal_display_set_columns(term->display, term->cursor_row + term->scroll_offset,
term->cursor_col, term->cursor_col, guac_char);
/* Set cursor if should be visible */
if (term->cursor_visible) {
/* Get new row with cursor */
row = guac_terminal_buffer_get_row(term->buffer, term->cursor_row, term->cursor_col+1);
term->visible_cursor_row = term->cursor_row;
term->visible_cursor_col = term->cursor_col;
guac_char = &(row->characters[term->cursor_col]);
guac_char->attributes.cursor = true;
guac_terminal_display_set_columns(term->display, term->cursor_row + term->scroll_offset,
term->cursor_col, term->cursor_col, guac_char);
term->visible_cursor_row = term->cursor_row;
term->visible_cursor_col = term->cursor_col;
}
/* Otherwise set visible position to a sentinel value */
else {
term->visible_cursor_row = -1;
term->visible_cursor_col = -1;
}
return;
@ -1240,7 +1252,8 @@ static void __guac_terminal_resize(guac_terminal* term, int width, int height) {
/* Update buffer top and cursor row based on shift */
term->buffer->top += shift_amount;
term->cursor_row -= shift_amount;
term->visible_cursor_row -= shift_amount;
if (term->visible_cursor_row != -1)
term->visible_cursor_row -= shift_amount;
/* Redraw characters within old region */
__guac_terminal_redraw_rect(term, height - shift_amount, 0, height-1, width-1);
@ -1274,7 +1287,8 @@ static void __guac_terminal_resize(guac_terminal* term, int width, int height) {
/* Update buffer top and cursor row based on shift */
term->buffer->top -= shift_amount;
term->cursor_row += shift_amount;
term->visible_cursor_row += shift_amount;
if (term->visible_cursor_row != -1)
term->visible_cursor_row += shift_amount;
/* If scrolled enough, use scroll to fulfill entire resize */
if (term->scroll_offset >= shift_amount) {

7
src/terminal/terminal/terminal.h
View File

@ -337,13 +337,20 @@ struct guac_terminal {
*/
int cursor_col;
/**
* The desired visibility state of the cursor.
*/
bool cursor_visible;
/**
* The row of the rendered cursor.
* Will be set to -1 if the cursor is not visible.
*/
int visible_cursor_row;
/**
* The column of the rendered cursor.
* Will be set to -1 if the cursor is not visible.
*/
int visible_cursor_col;

1
src/terminal/terminal_handlers.c
View File

@ -432,6 +432,7 @@ static bool* __guac_terminal_get_flag(guac_terminal* term, int num, char private
if (private_mode == '?') {
switch (num) {
case 1: return &(term->application_cursor_keys); /* DECCKM */
case 25: return &(term->cursor_visible); /* DECTECM */
}
}