Support for downward scrolling and CSI operation L
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d57bdb06e4
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@ -146,6 +146,11 @@ struct ssh_guac_terminal {
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*/
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int cursor_col;
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/**
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* Simple cursor layer until scrollback, etc. is implemented.
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*/
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guac_layer* cursor_layer;
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int foreground;
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int background;
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int reverse;
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@ -172,6 +177,8 @@ void ssh_guac_terminal_free(ssh_guac_terminal* term);
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int ssh_guac_terminal_write(ssh_guac_terminal* term, const char* c, int size);
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int ssh_guac_terminal_redraw_cursor(ssh_guac_terminal* term);
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int ssh_guac_terminal_set(ssh_guac_terminal* term, int row, int col,
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char c, int foreground, int background);
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@ -185,6 +192,9 @@ int ssh_guac_terminal_clear(ssh_guac_terminal* term,
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int ssh_guac_terminal_scroll_up(ssh_guac_terminal* term,
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int start_row, int end_row, int amount);
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int ssh_guac_terminal_scroll_down(ssh_guac_terminal* term,
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int start_row, int end_row, int amount);
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int ssh_guac_terminal_clear_range(ssh_guac_terminal* term,
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int start_row, int start_col,
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int end_row, int end_col, int background_color);
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@ -69,6 +69,7 @@ int ssh_guac_client_password_key_handler(guac_client* client, int keysym, int pr
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/* Add to password */
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client_data->password[client_data->password_length++] = keysym;
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ssh_guac_terminal_write(client_data->term, "*", 1);
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ssh_guac_terminal_redraw_cursor(client_data->term);
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guac_flush(client->io);
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}
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else if (keysym == 0xFF08) {
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@ -78,6 +79,7 @@ int ssh_guac_client_password_key_handler(guac_client* client, int keysym, int pr
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/* Backspace */
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ssh_guac_terminal_write(client_data->term, "\x08\x1B[K", 4);
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ssh_guac_terminal_redraw_cursor(client_data->term);
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guac_flush(client->io);
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}
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@ -89,6 +91,7 @@ int ssh_guac_client_password_key_handler(guac_client* client, int keysym, int pr
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/* Clear screen */
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ssh_guac_terminal_write(client_data->term, "\x1B[2J\x1B[1;1H", 10);
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ssh_guac_terminal_redraw_cursor(client_data->term);
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guac_flush(client->io);
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return ssh_guac_client_auth(client, client_data->password);
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@ -148,6 +151,7 @@ int guac_client_init(guac_client* client, int argc, char** argv) {
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client_data->password_length = 0;
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ssh_guac_terminal_write(client_data->term, "Password: ", 10);
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ssh_guac_terminal_redraw_cursor(client_data->term);
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guac_flush(client->io);
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client->key_handler = ssh_guac_client_password_key_handler;
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@ -60,6 +60,8 @@ int ssh_guac_client_handle_messages(guac_client* client) {
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ssh_channel read_channels[2];
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struct timeval timeout;
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guac_log_info("ENTER HANDLE MESSAGES...");
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/* Channels to read */
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read_channels[0] = client_data->term_channel;
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read_channels[1] = NULL;
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@ -73,13 +75,17 @@ int ssh_guac_client_handle_messages(guac_client* client) {
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int bytes_read = 0;
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guac_log_info("DONE WAITING (%i)", GUAC_SYNC_FREQUENCY);
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/* While data available, write to terminal */
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while (channel_is_open(client_data->term_channel)
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&& !channel_is_eof(client_data->term_channel)
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&& (bytes_read = channel_read_nonblocking(client_data->term_channel, buffer, sizeof(buffer), 0)) > 0) {
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ssh_guac_terminal_write(client_data->term, buffer, bytes_read);
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guac_flush(io);
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if (ssh_guac_terminal_write(client_data->term, buffer, bytes_read)
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|| ssh_guac_terminal_redraw_cursor(client_data->term)
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|| guac_flush(io))
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return 1;
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}
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@ -91,6 +97,7 @@ int ssh_guac_client_handle_messages(guac_client* client) {
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}
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}
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guac_log_info("LEAVE HANDLE MESSAGES");
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return 0;
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}
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@ -93,6 +93,7 @@ ssh_guac_terminal* ssh_guac_terminal_create(guac_client* client) {
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term->cursor_row = 0;
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term->cursor_col = 0;
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term->cursor_layer = guac_client_alloc_layer(client, 1);
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term->term_width = 80;
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term->term_height = 24;
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@ -220,6 +221,33 @@ guac_layer* __ssh_guac_terminal_get_glyph(ssh_guac_terminal* term, char c) {
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}
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int ssh_guac_terminal_redraw_cursor(ssh_guac_terminal* term) {
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GUACIO* io = term->client->io;
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/* Erase old cursor */
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return
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guac_send_rect(io,
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GUAC_COMP_SRC, term->cursor_layer,
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0, 0,
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term->char_width * term->term_width,
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term->char_height * term->term_height,
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0, 0, 0, 0)
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|| guac_send_rect(io,
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GUAC_COMP_SRC, term->cursor_layer,
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term->char_width * term->cursor_col,
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term->char_height * term->cursor_row,
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term->char_width, term->char_height,
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0x40, 0xFF, 0x80,
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0x80);
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}
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int ssh_guac_terminal_set(ssh_guac_terminal* term, int row, int col,
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char c, int foreground, int background) {
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@ -342,6 +370,26 @@ int ssh_guac_terminal_scroll_up(ssh_guac_terminal* term,
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}
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int ssh_guac_terminal_scroll_down(ssh_guac_terminal* term,
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int start_row, int end_row, int amount) {
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/* Calculate height of scroll region */
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int height = end_row - start_row + 1;
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return
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/* Move rows within scroll region down by the given amount */
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ssh_guac_terminal_copy(term,
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start_row, 0,
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height - amount, term->term_width,
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start_row + amount, 0)
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/* Fill new rows with background */
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|| ssh_guac_terminal_clear(term,
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start_row, 0, amount, term->term_width,
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term->background);
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}
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int ssh_guac_terminal_clear_range(ssh_guac_terminal* term,
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int start_row, int start_col,
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@ -407,6 +407,17 @@ int ssh_guac_terminal_csi(ssh_guac_terminal* term, char c) {
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break;
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/* L: Insert blank lines (scroll down) */
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case 'L':
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amount = argv[0];
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if (amount == 0) amount = 1;
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ssh_guac_terminal_scroll_down(term,
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term->cursor_row, term->scroll_end, amount);
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break;
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/* Warn of unhandled codes */
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default:
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if (c != ';')
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