static int __guac_terminal_send_mouse()

in src/terminal/terminal.c [1751:1833]

• 47 lines of code
• 13 McCabe index (conditional complexity)

static int __guac_terminal_send_mouse(guac_terminal* term, guac_user* user,
        int x, int y, int mask) {

    /* Ignore user input if terminal is not started */
    if (!term->started) {
        guac_client_log(term->client, GUAC_LOG_DEBUG, "Ignoring user input "
                "while terminal has not yet started.");
        return 0;
    }

    /* Determine which buttons were just released and pressed */
    int released_mask =  term->mouse_mask & ~mask;
    int pressed_mask  = ~term->mouse_mask &  mask;

    /* Store current mouse location/state */
    guac_common_cursor_update(term->cursor, user, x, y, mask);

    /* Notify scrollbar, do not handle anything handled by scrollbar */
    if (guac_terminal_scrollbar_handle_mouse(term->scrollbar, x, y, mask)) {

        /* Set pointer cursor if mouse is over scrollbar */
        if (term->current_cursor != GUAC_TERMINAL_CURSOR_POINTER) {
            term->current_cursor = GUAC_TERMINAL_CURSOR_POINTER;
            guac_common_cursor_set_pointer(term->cursor);
            guac_terminal_notify(term);
        }

        guac_terminal_notify(term);
        return 0;

    }

    term->mouse_mask = mask;

    /* Show mouse cursor if not already shown */
    if (term->current_cursor != GUAC_TERMINAL_CURSOR_IBAR) {
        term->current_cursor = GUAC_TERMINAL_CURSOR_IBAR;
        guac_common_cursor_set_ibar(term->cursor);
        guac_terminal_notify(term);
    }

    /* Paste contents of clipboard on right or middle mouse button up */
    if ((released_mask & GUAC_CLIENT_MOUSE_RIGHT) || (released_mask & GUAC_CLIENT_MOUSE_MIDDLE))
        return guac_terminal_send_data(term, term->clipboard->buffer, term->clipboard->length);

    /* If left mouse button was just released, stop selection */
    if (released_mask & GUAC_CLIENT_MOUSE_LEFT)
        guac_terminal_select_end(term);

    /* Update selection state contextually while the left mouse button is
     * pressed */
    else if (mask & GUAC_CLIENT_MOUSE_LEFT) {

        int row = y / term->display->char_height - term->scroll_offset;
        int col = x / term->display->char_width;

        /* If mouse button was already just pressed, start a new selection or
         * resume the existing selection depending on whether shift is held */
        if (pressed_mask & GUAC_CLIENT_MOUSE_LEFT) {
            if (term->mod_shift)
                guac_terminal_select_resume(term, row, col);
            else
                guac_terminal_select_start(term, row, col);
        }

        /* In all other cases, simply update the existing selection as long as
         * the mouse button is pressed */
        else
            guac_terminal_select_update(term, row, col);

    }

    /* Scroll up if wheel moved up */
    if (released_mask & GUAC_CLIENT_MOUSE_SCROLL_UP)
        guac_terminal_scroll_display_up(term, GUAC_TERMINAL_WHEEL_SCROLL_AMOUNT);

    /* Scroll down if wheel moved down */
    if (released_mask & GUAC_CLIENT_MOUSE_SCROLL_DOWN)
        guac_terminal_scroll_display_down(term, GUAC_TERMINAL_WHEEL_SCROLL_AMOUNT);

    return 0;

}