Refactoring: Move
Move text block into its own module
This commit is contained in:
Matthias Bisping
parent
cef97b33f9
commit
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0
synthesis/segment/text_block/__init__.py
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synthesis/segment/text_block/__init__.py
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112
synthesis/segment/text_block/text_block.py
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112
synthesis/segment/text_block/text_block.py
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@ -0,0 +1,112 @@
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import abc
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import textwrap
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from typing import List
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from PIL import Image, ImageDraw, ImageFont
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from faker import Faker
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from funcy import first, identity, iterate, take, last, rest
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from cv_analysis.utils import star, conj
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from cv_analysis.utils.image_operations import superimpose
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from cv_analysis.utils.rectangle import Rectangle
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from synthesis.random import rnd
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from synthesis.segment.content_rectangle import ContentRectangle
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from synthesis.text.font import pick_random_mono_space_font_available_on_system
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from synthesis.text.line_formatter.identity import IdentityLineFormatter
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from synthesis.text.line_formatter.paragraph import ParagraphLineFormatter
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class TextBlock(ContentRectangle):
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def __init__(self, x1, y1, x2, y2, text_generator=None, font=None, font_size=None):
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super().__init__(x1, y1, x2, y2)
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self.font = font or ImageFont.load_default() # pick_random_font_available_on_system(size=font_size)
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self.text_generator = text_generator or ParagraphGenerator()
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def __call__(self, *args, **kwargs):
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pass
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def generate_random_text(self, rectangle: Rectangle, n_sentences=3000):
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lines = self.text_generator(rectangle, n_sentences)
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image = write_lines_to_image(lines, rectangle, self.font)
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return self.__put_content(image)
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def put_text(self, text: str, rectangle: Rectangle):
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text_width, text_height = self.font.getsize(text)
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width_delta = text_width - rectangle.width
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height_delta = text_height - rectangle.height
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image = Image.new("RGBA", (text_width, text_height), (0, 255, 255, 0))
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if width_delta > 0 or height_delta > 0:
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image = image.resize((int(rectangle.width * 0.9), text_height))
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draw = ImageDraw.Draw(image)
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draw.text((0, 0), text, font=self.font, fill=(0, 0, 0, 255))
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return self.__put_content(image)
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def __put_content(self, image: Image.Image):
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self.content = image if not self.content else superimpose(self.content, image)
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assert self.content.mode == "RGBA"
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return self
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class TextBlockGenerator(abc.ABC):
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pass
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class ParagraphGenerator(TextBlockGenerator):
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def __init__(self):
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self.line_formatter = ParagraphLineFormatter(blank_line_percentage=rnd.uniform(0, 0.5))
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def __call__(self, rectangle, n_sentences):
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return self.generate_paragraph(rectangle, n_sentences)
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def generate_paragraph(self, rectangle, n_sentences):
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lines = generate_random_text_lines(rectangle, self.line_formatter, n_sentences)
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return lines
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def write_lines_to_image(lines: List[str], rectangle: Rectangle, font=None) -> Image.Image:
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def write_line(line, line_number):
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draw.text((0, line_number * text_size), line, font=font, fill=(0, 0, 0, 255))
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font = font or pick_random_mono_space_font_available_on_system()
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image = Image.new("RGBA", (rectangle.width, rectangle.height), (0, 255, 255, 0))
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draw = ImageDraw.Draw(image)
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text_size = draw.textsize(first(lines), font=font)[1]
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for line_number, line in enumerate(lines):
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write_line(line, line_number)
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return image
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def generate_random_text_lines(rectangle: Rectangle, line_formatter=identity, n_sentences=3000) -> List[str]:
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text = Faker().paragraph(nb_sentences=n_sentences, variable_nb_sentences=False, ext_word_list=None)
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unformatted_lines = textwrap.wrap(text, width=rectangle.width, break_long_words=False)
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# each iteration of the line formatter function formats one more line and adds it to the back of the list
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formatted_lines_generator = iterate(star(line_formatter), (unformatted_lines, True))
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# hence do as many iterations as there are lines in the rectangle
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lines_per_iteration = take(len(unformatted_lines), formatted_lines_generator)
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# and then take the lines from the last iteration of the function
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formatted_lines, _ = last(lines_per_iteration)
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return formatted_lines
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class CaptionGenerator(TextBlockGenerator):
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def __init__(self, caption_start=None):
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self.line_formatter = IdentityLineFormatter()
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self.caption_start = caption_start or f"Fig {rnd.randint(1, 20)}"
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def __call__(self, rectangle, n_sentences):
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return self.generate_paragraph(rectangle, n_sentences)
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def generate_paragraph(self, rectangle, n_sentences):
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lines = generate_random_text_lines(rectangle, self.line_formatter, n_sentences)
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first_line_modified = f"{self.caption_start}.: {first(lines)}"
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lines = conj(first_line_modified, rest(lines))
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return lines
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112
test/fixtures/page_generation/page.py
vendored
112
test/fixtures/page_generation/page.py
vendored
@ -1,9 +1,7 @@
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import abc
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import io
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import itertools
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import random
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import sys
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import textwrap
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from copy import deepcopy
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from enum import Enum
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from functools import lru_cache, partial
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@ -13,14 +11,12 @@ from typing import Tuple, Iterable, List
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import blend_modes
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import numpy as np
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import pytest
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from PIL import Image, ImageFont, ImageDraw, ImageEnhance
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from PIL import Image, ImageDraw, ImageEnhance
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from PIL.Image import Transpose
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from faker import Faker
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from loguru import logger
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from matplotlib import pyplot as plt
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from matplotlib.colors import ListedColormap
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from cv_analysis.utils import star, conj
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from cv_analysis.utils.conversion import normalize_image_format_to_array, normalize_image_format_to_pil
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from cv_analysis.utils.image_operations import blur, sharpen, overlay, superimpose, compute_pasting_coordinates
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from cv_analysis.utils.merging import merge_related_rectangles
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@ -30,9 +26,8 @@ from synthesis.partitioner.two_column import TwoColumnPagePartitioner
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from synthesis.random import rnd
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from synthesis.segment.content_rectangle import ContentRectangle
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from synthesis.segment.random_content_rectangle import RandomContentRectangle
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from synthesis.text.font import pick_random_mono_space_font_available_on_system, pick_random_font_available_on_system
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from synthesis.text.line_formatter.identity import IdentityLineFormatter
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from synthesis.text.line_formatter.paragraph import ParagraphLineFormatter
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from synthesis.segment.text_block.text_block import TextBlock, CaptionGenerator
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from synthesis.text.font import pick_random_font_available_on_system
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from synthesis.text.text import generate_random_words, generate_random_number
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logger.remove()
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@ -44,11 +39,6 @@ from funcy import (
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compose,
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identity,
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lmap,
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first,
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iterate,
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take,
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last,
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rest,
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lsplit,
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lfilter,
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repeatedly,
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@ -888,89 +878,6 @@ def generate_text_block(rectangle: Rectangle, text) -> ContentRectangle:
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return block
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def write_lines_to_image(lines: List[str], rectangle: Rectangle, font=None) -> Image.Image:
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def write_line(line, line_number):
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draw.text((0, line_number * text_size), line, font=font, fill=(0, 0, 0, 255))
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font = font or pick_random_mono_space_font_available_on_system()
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image = Image.new("RGBA", (rectangle.width, rectangle.height), (0, 255, 255, 0))
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draw = ImageDraw.Draw(image)
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text_size = draw.textsize(first(lines), font=font)[1]
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for line_number, line in enumerate(lines):
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write_line(line, line_number)
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return image
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class TextBlockGenerator(abc.ABC):
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pass
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class ParagraphGenerator(TextBlockGenerator):
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def __init__(self):
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self.line_formatter = ParagraphLineFormatter(blank_line_percentage=rnd.uniform(0, 0.5))
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def __call__(self, rectangle, n_sentences):
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return self.generate_paragraph(rectangle, n_sentences)
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def generate_paragraph(self, rectangle, n_sentences):
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lines = generate_random_text_lines(rectangle, self.line_formatter, n_sentences)
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return lines
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class CaptionGenerator(TextBlockGenerator):
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def __init__(self, caption_start=None):
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self.line_formatter = IdentityLineFormatter()
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self.caption_start = caption_start or f"Fig {rnd.randint(1, 20)}"
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def __call__(self, rectangle, n_sentences):
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return self.generate_paragraph(rectangle, n_sentences)
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def generate_paragraph(self, rectangle, n_sentences):
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lines = generate_random_text_lines(rectangle, self.line_formatter, n_sentences)
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first_line_modified = f"{self.caption_start}.: {first(lines)}"
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lines = conj(first_line_modified, rest(lines))
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return lines
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class TextBlock(ContentRectangle):
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def __init__(self, x1, y1, x2, y2, text_generator=None, font=None, font_size=None):
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super().__init__(x1, y1, x2, y2)
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self.font = font or ImageFont.load_default() # pick_random_font_available_on_system(size=font_size)
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self.text_generator = text_generator or ParagraphGenerator()
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def __call__(self, *args, **kwargs):
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pass
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def generate_random_text(self, rectangle: Rectangle, n_sentences=3000):
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lines = self.text_generator(rectangle, n_sentences)
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image = write_lines_to_image(lines, rectangle, self.font)
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return self.__put_content(image)
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def put_text(self, text: str, rectangle: Rectangle):
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text_width, text_height = self.font.getsize(text)
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width_delta = text_width - rectangle.width
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height_delta = text_height - rectangle.height
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image = Image.new("RGBA", (text_width, text_height), (0, 255, 255, 0))
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if width_delta > 0 or height_delta > 0:
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image = image.resize((int(rectangle.width * 0.9), text_height))
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draw = ImageDraw.Draw(image)
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draw.text((0, 0), text, font=self.font, fill=(0, 0, 0, 255))
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return self.__put_content(image)
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def __put_content(self, image: Image.Image):
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self.content = image if not self.content else superimpose(self.content, image)
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assert self.content.mode == "RGBA"
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return self
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class RandomPageNumber(TextBlock):
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def __init__(self, x1, y1, x2, y2):
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super().__init__(x1, y1, x2, y2)
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@ -982,19 +889,6 @@ class RandomPageNumber(TextBlock):
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self.location_coordinates = self.location_to_coordinates(self.pick_location())
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def generate_random_text_lines(rectangle: Rectangle, line_formatter=identity, n_sentences=3000) -> List[str]:
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text = Faker().paragraph(nb_sentences=n_sentences, variable_nb_sentences=False, ext_word_list=None)
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unformatted_lines = textwrap.wrap(text, width=rectangle.width, break_long_words=False)
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# each iteration of the line formatter function formats one more line and adds it to the back of the list
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formatted_lines_generator = iterate(star(line_formatter), (unformatted_lines, True))
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# hence do as many iterations as there are lines in the rectangle
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lines_per_iteration = take(len(unformatted_lines), formatted_lines_generator)
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# and then take the lines from the last iteration of the function
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formatted_lines, _ = last(lines_per_iteration)
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return formatted_lines
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def paste_content(page, content_box: ContentRectangle):
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assert content_box.content.mode == "RGBA"
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page.paste(content_box.content, (content_box.x1, content_box.y1), content_box.content)
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