123 lines
4.0 KiB
Python
123 lines
4.0 KiB
Python
import os
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import textwrap
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from typing import Tuple
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from PIL import Image, ImageDraw, ImageFont, UnidentifiedImageError
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from poizonstore.settings import BASE_DIR
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def create_preview(source_image: str, size=None, price_rub=None, title_lines=None):
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# Create image
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preview_width, preview_height = 800, 600
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hor_padding = 15
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vert_padding = 50
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left_block_width = 270 # minimal width
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canvas_img = Image.new('RGBA', (preview_width, preview_height), color='white')
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draw = ImageDraw.Draw(canvas_img)
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def get_font(font_size):
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font_path = os.path.join(BASE_DIR, 'static', 'preview_image_font.ttf')
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return ImageFont.truetype(font_path, size=font_size)
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def draw_text(xy: Tuple[float, float], text: str, font: ImageFont, multiline_width: int = None, fill: str = None):
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x, y = xy
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block_width = 0
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block_height = 0
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if multiline_width is None:
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text = [text]
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else:
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text = textwrap.wrap(text, width=multiline_width)
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for line in text:
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_, _, line_width, line_height = font.getbbox(line)
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draw.text((x, y), line, font=font, fill=fill)
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y += line_height
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block_width = max(block_width, line_width)
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block_height += line_height
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return block_width, block_height
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def resize_with_ar(image, size):
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max_w, max_h = size
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if image.height > image.width:
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factor = max_h / image.height
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else:
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factor = max_w / image.width
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return image.resize((int(image.width * factor), int(image.height * factor)))
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if not os.path.isfile(source_image):
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return None
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# Draw top text
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top_font = get_font(20)
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text = 'Заказ в Poizon Store'
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block_size = draw_text((hor_padding, vert_padding), text, font=top_font, fill='black')
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left_block_width = max(left_block_width, block_size[0] + hor_padding)
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# Draw title
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title_x, title_y = hor_padding, vert_padding + 30
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if title_lines:
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title_font = get_font(40)
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for title_line in title_lines:
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width, height = draw_text((title_x, title_y), title_line, font=title_font, multiline_width=12, fill='black')
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title_y += height
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left_block_width = max(left_block_width, width + title_x)
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# Draw size
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if size:
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size_text = str(size)
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size_font = get_font(20)
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rect_x, rect_y = hor_padding, title_y + 30
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rect_width, rect_height = 40, 40
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# size text is slightly inside a rect
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size_x, size_y = rect_x + 7, rect_y + 7
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draw.rectangle((rect_x, rect_y, rect_x + rect_width, rect_y + rect_height), fill='black', width=2)
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block_size = draw_text((size_x, size_y), size_text, font=size_font, fill='white')
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left_block_width = max(left_block_width, max(block_size[0], rect_width))
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# Draw price
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if price_rub:
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price_text = f"{price_rub} ₽"
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price_font = get_font(50)
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price_x, price_y = hor_padding + 15, preview_height - 100
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block_size = draw_text((price_x, price_y), price_text, font=price_font, fill='black')
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left_block_width = max(left_block_width, block_size[0] + price_x)
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# Draw goods image
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img2_box_w = preview_width - left_block_width - hor_padding * 2
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img2_box_y = preview_height - vert_padding * 2
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try:
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with Image.open(source_image).convert("RGBA") as img2:
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img2 = resize_with_ar(img2, (img2_box_w, img2_box_y))
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img2_x = left_block_width + int(img2_box_w / 2) - int(img2.width / 2)
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img2_y = 50 + int(img2_box_y / 2) - int(img2.height / 2)
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canvas_img.paste(img2, (img2_x, img2_y), mask=img2)
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# Debug only
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# img2_box = (img2_x, img2_y, img2_x + img2.width, img2_y + img2.height)
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# draw.rectangle(img2_box, outline='red', width=2)
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return canvas_img.convert('RGB')
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except UnidentifiedImageError:
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return None
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def concat_not_null_values(*values, separator=' '):
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return separator.join([v for v in values if v is not None])
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