It’s possible to get that but it’s not simple.
Example:
extends Control
var paragraph = TextParagraph.new()
@export var font:Font
var text = "Hello world!\nAnother line.\nAnd another one that's long so it breaks whenever it needs to."
func _ready() -> void:
# Add the text to the paragraph with the loaded font and with font size 32
paragraph.add_string(text, font, 32)
# Set the max width to 300
paragraph.width = 300
func _draw() -> void:
# Get the primary text server
var text_server = TextServerManager.get_primary_interface()
var x = 0.0
var y = 0.0
var ascent = 0.0
var descent = 0.0
# for each line
for i in paragraph.get_line_count():
# reset x
x = 0.0
# get the ascent and descent of the line
ascent = paragraph.get_line_ascent(i)
descent = paragraph.get_line_descent(i)
# get the size of the line from the paragrah
var line_size = paragraph.get_line_size(i)
# prepare the tight rect
var line_tight_rect = Rect2()
# get the rid of the line
var line_rid = paragraph.get_line_rid(i)
# get all the glyphs that compose the line
var glyphs = text_server.shaped_text_get_glyphs(line_rid)
# for each glyph
for glyph in glyphs:
# Extract info about the glyph
var glyph_font_rid = glyph.get('font_rid', RID())
var glyph_font_size = Vector2i(glyph.get('font_size', 8), 0)
var glyph_index = glyph.get('index', -1)
var glyph_offset = text_server.font_get_glyph_offset(glyph_font_rid, glyph_font_size, glyph_index)
var glyph_size = text_server.font_get_glyph_size(glyph_font_rid, glyph_font_size, glyph_index)
# draw a red rect surrounding the glyph
var glyph_rect = Rect2(Vector2(x, y + ascent) + glyph_offset, glyph_size)
if glyph_rect.has_area():
draw_rect(glyph_rect, Color.RED, false)
if not line_tight_rect.has_area():
# initialize the tight rect with the first glyph rect if it's empty
line_tight_rect = glyph_rect
else:
# or merge the glyph rect
line_tight_rect = line_tight_rect.merge(glyph_rect)
# get the advance (how much the we need to move x)
var advance = glyph.get("advance", 0)
# add the advance to x
x += advance
# draw the tight rect
draw_rect(line_tight_rect, Color(0, 1, 0, 0.4))
# draw the size of the line from the paragraph
draw_rect(Rect2(Vector2(0, y), line_size), Color.BLUE, false)
# update y with the ascent and descent of the line
y += ascent + descent
# draw the paragraph to this canvas item
paragraph.draw(get_canvas_item(), Vector2.ZERO)
Result:
Red: The bounding box of the glyph
Green: The tight bounding box of the line
Blue: The bounding box of the line