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"""
Hello World Text Example
++++++++++++++++++++++++
Example of using the blf module. For this module to work we
need to use the OpenGL wrapper :class:`~bgl` as well.
"""
# import stand alone modules
import blf
import bpy
font_info = {
"font_id": 0,
"handler": None,
}
def init():
"""init function - runs once"""
import os
# Create a new font object, use external ttf file.
font_path = bpy.path.abspath('//Zeyada.ttf')
# Store the font indice - to use later.
if os.path.exists(font_path):
font_info["font_id"] = blf.load(font_path)
else:
# Default font.
font_info["font_id"] = 0
# set the font drawing routine to run every frame
font_info["handler"] = bpy.types.SpaceView3D.draw_handler_add(
draw_callback_px, (None, None), 'WINDOW', 'POST_PIXEL')
def draw_callback_px(self, context):
"""Draw on the viewports"""
# BLF drawing routine
font_id = font_info["font_id"]
blf.position(font_id, 2, 80, 0)
blf.size(font_id, 50, 72)
blf.draw(font_id, "Hello World")
if __name__ == '__main__':
init()
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