godot-xterm/addons/godot_xterm/buffer/buffer_set.gd
Leroy Hopson 0d4e10f5ab Add more features, bug fixes and bugs ;-)
Most notably:
- Reflow is now working. Terminal size will fill the window and
cols/rows will be resized/calculated based on window and font size.
- Added support for different fonts (i.e. bold, italic, bolditalic).
- Enabled blinking characters.
- Adde more tests and caught a few subtle bugs.
- Removed renderer code (which was part of xterm.js) and just
doing naive rendering in terminal.gd, but it seems to perform
a lot faster.

Still not working completely:
- vim (some weirdness going on).
- vttest (more weirdness).

Todo:
- Fix the above.
- Draw the cursor!
- Improve performance. Performance is still not great. The terminal
becomes unusable when running `yes` or `cmatrix -r`.
2020-05-19 18:55:43 +07:00

69 lines
1.9 KiB
GDScript

# Copyright (c) 2017 The xterm.js authors. All rights reserved.
# Ported to GDScript by the GodotXterm authors.
# License MIT
extends Reference
const Buffer = preload("res://addons/godot_xterm/buffer/buffer.gd")
signal buffer_activated(active_buffer, inactive_buffer)
var normal
var alt
var active
func _init(options_service, buffer_service):
normal = Buffer.new(true, options_service, buffer_service)
normal.fill_viewport_rows()
# The alt buffer should never have scrollback.
# See http://invisible-island.net/xterm/ctlseqs/ctlseqs.html#h2-The-Alternate-Screen-Buffer
alt = Buffer.new(false, options_service, buffer_service)
active = normal
setup_tab_stops()
# Sets the normal Bufer of the BufferSet as its currently active Buffer.
func activate_normal_buffer() -> void:
if active == normal:
return
normal.x = alt.x
normal.y = alt.y
# The alt buffer should always be cleared when we switch to the normal
# buffer. This frees up memory since the alt buffer should always be new
# when activated.
alt.clear()
active = normal
emit_signal("buffer_activated", normal, alt)
# Sets the alt Buffer of the BufferSet as its currently active Buffer.
func activate_alt_buffer(fill_attr = null) -> void:
if active == alt:
return
# Since the alt buffer is always cleared when the normal buffer is
# activated, we want to fill it when switching to it.
alt.fill_viewport_rows(fill_attr)
alt.x = normal.x
alt.y = normal.y
active = alt
emit_signal("buffer_activated", alt, normal)
# Resizes both normal and alt buffers, adjusting their data accordingly.
# @param new_cols The new number of columns.
# @param new_rows The new number of rows.
func resize(new_cols: int, new_rows: int) -> void:
normal.resize(new_cols, new_rows)
alt.resize(new_cols, new_rows)
# Setup the tab stops.
# @param i The index to start setting up tab stops from.
func setup_tab_stops(i = null) -> void:
normal.setup_tab_stops(i)
alt.setup_tab_stops(i)