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`.

addons/godot_xterm/services/buffer_service.gd

@@ -4,7 +4,7 @@
 extends Reference
 
 signal buffer_activated(active_buffer, inactive_buffer)
-signal resized
+signal resized(cols, rows)
 
 const BufferSet = preload("res://addons/godot_xterm/buffer/buffer_set.gd")
 
@@ -29,11 +29,25 @@ func _get_buffer():
 
 func _init(options_service):
 	_options_service = options_service
+	_options_service.connect("option_changed", self, "_option_changed")
 	cols = max(_options_service.options.cols, MINIMUM_COLS)
 	rows = max(_options_service.options.rows, MINIMUM_ROWS)
 	buffers = BufferSet.new(_options_service, self)
 	buffers.connect("buffer_activated", self, "_buffer_activated")
 
 
+func resize(cols: int, rows: int) -> void:
+	self.cols = cols
+	self.rows = rows
+	buffers.resize(cols, rows)
+	#buffers.setup_tab_stops(cols)
+	emit_signal("resized", cols, rows)
+
+
 func _buffer_activated(active_buffer, inactive_buffer):
 	emit_signal("buffer_activated", active_buffer, inactive_buffer)
+
+
+func _option_changed(option: String) -> void:
+	if option == "cols" or option == "rows":
+		resize(_options_service.options.cols, _options_service.options.rows)

addons/godot_xterm/services/options_service.gd

@@ -4,45 +4,72 @@
 extends Reference
 
 
-class TerminalOptions:
-	var cols: int
-	var rows: int
-	var cursor_blink: bool
-	var cursor_style
-	var cursor_width: int
-	var bell_sound
-	var bell_style
-	var draw_bold_text_in_bright_colors: bool
-	var fast_scroll_modifier
-	var fast_scroll_sensitivity: int
-	var font_family: Dictionary
-	var font_size: int
-	var font_weight: String
-	var font_weight_bold: String
-	var line_height: float
-	var link_tooltip_hover_duration: int
-	var letter_spacing: float
-	var log_level
-	var scrollback: int
-	var scroll_sensitivity: int
-	var screen_reader_mode: bool
-	var mac_option_is_meta: bool
-	var mac_option_click_forces_selection: bool
-	var minimum_contrast_ratio: float
-	var disable_stdin: bool
-	var allow_proposed_api: bool
-	var allow_transparency: bool
-	var tab_stop_width: int
-	var colors: Dictionary
-	var right_click_selects_word
-	var renderer_type
-	var window_options: Dictionary
-	var windows_mode: bool
-	var word_separator: String
-	var convert_eol: bool
-	var term_name: String
-	var cancel_events: bool
+const Constants = preload("res://addons/godot_xterm/buffer/constants.gd")
 
+const CursorStyle = Constants.CursorStyle
+const UnderlineStyle = Constants.UnderlineStyle
+const BellStyle = Constants.BellStyle
+
+
+class TerminalOptions:
+	extends Reference
+	
+	
+	var cols: int = 80
+	var rows: int = 24
+	var cursor_blink: bool = false
+	var cursor_style = CursorStyle.BLOCK
+#	var cursor_width: int = 1
+#	var bell_sound: AudioStream = null
+#	var bell_style = BellStyle.NONE
+#	var draw_bold_text_in_bright_colors: bool = true
+#	var fast_scroll_modifier = "alt"
+#	var fast_scroll_sensitivity: int = 5
+	var font_family: Dictionary = {
+		# TODO
+	}
+	var font_size: int = 15
+#	var font_weight: String # TODO: Remove
+#	var font_weight_bold: String # TODO: Remove
+	var line_height: float = 1.0
+#	var link_tooltip_hover_duration: int # TODO: Remove
+	var letter_spacing: float = 0
+#	var log_level # TODO: implement
+	var scrollback: int = 1000
+#	var scroll_sensitivity: int = 1
+	var screen_reader_mode: bool = false
+#	var mac_option_is_meta: bool = false
+#	var mac_option_click_forces_selection: bool = false
+#	var minimum_contrast_ratio: float = 1
+#	var disable_stdin: bool = false
+#	var allow_proposed_api: bool = true
+	var allow_transparency: bool = false
+	var tab_stop_width: int = 8
+#	var colors: Dictionary = {
+#		'black': Color(0, 0, 0)
+#	}
+#	var right_click_selects_word = "isMac" # TODO?
+#	var renderer_type = "canvas" # Remove?
+	var window_options: Dictionary = {
+		'set_win_lines': false,
+	}
+	var windows_mode: bool = false
+#	var word_separator: String = " ()[]{}',\""
+	var convert_eol: bool = true
+#	var term_name: String = "xterm"
+#	var cancel_events: bool = false
+	
+	
+	# Copies options from an `object` to itself.
+	func copy_from(object: Object):
+		for property in get_property_list():
+			if property.usage == PROPERTY_USAGE_SCRIPT_VARIABLE:
+				var p = object.get(property.name)
+				if p:
+					set(property.name, p)
+
+
+var DEFAULT_OPTIONS = TerminalOptions.new()
 
 signal option_changed
 
@@ -51,3 +78,27 @@ var options
 
 func _init(options):
 	self.options = options
+	
+	# Set the font size based on the font_size option
+	_resize_fonts()
+
+
+func set_option(key: String, value) -> void:
+	# TODO: sanitize and validate options.
+	
+	# Don't fire an option change event if they didn't change
+	if options[key] == value:
+		return
+	
+	options[key] = value
+	emit_signal("option_changed", key)
+	
+	# Update other options accordingly.
+	match key:
+		"font_size":
+			_resize_fonts()
+
+
+func _resize_fonts():
+	for font in options.font_family.values():
+		font.size = options.font_size