mirror of
https://github.com/lihop/godot-xterm.git
synced 2024-11-10 12:50:25 +01:00
75 lines
1.8 KiB
GDScript3
75 lines
1.8 KiB
GDScript3
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# Copyright (c) 2020 The GodotXterm authors. All rights reserved.
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# License MIT
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extends Node2D
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class_name CanvasRenderingContext2D
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# This is a shim for the CavasRenderingContext2D interface of HTML5's Canvas API,
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# which the xterm.js renderer code uses heavily. It extends Node2D to take
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# advantage of the z_index property and also uses many methods of CanvasItem
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# which Node2D inherits.
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var fill_style
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var font = preload("res://addons/godot_xterm/fonts/source_code_pro/source_code_pro_regular.tres")
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var _saved
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var _draw_buffer = []
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# Called when the node enters the scene tree for the first time.
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func _ready():
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pass # Replace with function body.
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func draw_rect_deferred(rect: Rect2, color: Color):
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_draw_buffer.append({"method": "draw_rect", "args": [rect, color]})
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update()
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func clear_rect(rect: Rect2):
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draw_rect_deferred(rect, Color(0, 0, 0, 0))
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func fill_rect(rect: Rect2):
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draw_rect_deferred(rect, fill_style)
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func fill_text(text: String, x: int, y: int):
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_draw_buffer.append({"method": "_draw_text", "args": [font, Vector2(x, y), text, fill_style]})
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update()
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func _draw_text(font: Font, pos: Vector2, text: String, color) -> void:
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for i in text.length():
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var c = text[i]
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var next_char = text[i + 1] if i + 1 < text.length() else ''
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var advance = draw_char(font, pos, c, next_char, color)
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pos.x += advance
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func _draw():
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for command in _draw_buffer:
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self.callv(command.method, command.args)
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_draw_buffer.resize(0)
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func save():
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_saved = {
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'fill_style': fill_style,
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'font': font,
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}
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func restore():
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fill_style = _saved['fill_style']
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font = _saved['font']
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func measure_text(text: String):
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var text_metrics = TextMetrics.new()
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text_metrics.width = font.get_string_size(text).x
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return text_metrics
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class TextMetrics:
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extends Reference
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# https://developer.mozilla.org/en-US/docs/Web/API/TextMetrics
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var width
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