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# Copyright 2018 The pybadge Authors
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Measure the width, in pixels, of a string rendered using DejaVu Sans 110pt.
Uses a PIL/Pillow to determine the string length.
"""
from PIL import ImageFont
from pybadges import text_measurer
class PilMeasurer(text_measurer.TextMeasurer):
"""Measures the width of a string using PIL/Pillow."""
def __init__(self, deja_vu_sans_path: str):
"""Initializer for PilMeasurer.
Args:
deja_vu_sans_path: The path to the DejaVu Sans TrueType (.ttf) font
file.
"""
self._font = ImageFont.truetype(deja_vu_sans_path, 110)
def text_width(self, text: str) -> float:
"""Returns the width, in pixels, of a string in DejaVu Sans 110pt."""
width, _ = self._font.getsize(text)
return width
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