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2e96bdee35
The previous API wasn’t stateless, as it sometimes required to call get_intrinsic_size before accessing intrinsic_ratio. The new API offers a single method to get width, height and ratio.
70 lines
2.5 KiB
Python
70 lines
2.5 KiB
Python
"""
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weasyprint.svg.image
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--------------------
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Draw image and svg tags.
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"""
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from urllib.parse import urljoin
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from .utils import preserve_ratio
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def svg(svg, node, font_size):
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"""Draw svg tags."""
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x, y = svg.point(node.get('x'), node.get('y'), font_size)
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svg.stream.transform(e=x, f=y)
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if svg.tree == node:
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width, height = svg.concrete_width, svg.concrete_height
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else:
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width, height = svg.point(
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node.get('width'), node.get('height'), font_size)
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scale_x, scale_y, translate_x, translate_y = preserve_ratio(
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svg, node, font_size, width, height)
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svg.stream.rectangle(0, 0, width, height)
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svg.stream.clip()
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svg.stream.end()
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svg.stream.transform(a=scale_x, d=scale_y, e=translate_x, f=translate_y)
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def image(svg, node, font_size):
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"""Draw image tags."""
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x, y = svg.point(node.get('x'), node.get('y'), font_size)
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svg.stream.transform(e=x, f=y)
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base_url = node.get('{http://www.w3.org/XML/1998/namespace}base')
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url = urljoin(base_url or svg.url, node.get_href())
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image = svg.context.get_image_from_uri(url=url, forced_mime_type='image/*')
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if image is None:
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return
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width, height = svg.point(node.get('width'), node.get('height'), font_size)
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intrinsic_width, intrinsic_height, intrinsic_ratio = (
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image.get_intrinsic_size(1, font_size))
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if intrinsic_width is None and intrinsic_height is None:
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if intrinsic_ratio is None or (not width and not height):
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intrinsic_width, intrinsic_height = 300, 150
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elif not width:
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intrinsic_width, intrinsic_height = (
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intrinsic_ratio * height, height)
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else:
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intrinsic_width, intrinsic_height = width, width / intrinsic_ratio
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elif intrinsic_width is None:
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intrinsic_width = intrinsic_ratio * intrinsic_height
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elif intrinsic_height is None:
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intrinsic_height = intrinsic_width / intrinsic_ratio
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width = width or intrinsic_width
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height = height or intrinsic_height
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scale_x, scale_y, translate_x, translate_y = preserve_ratio(
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svg, node, font_size, width, height,
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(0, 0, intrinsic_width, intrinsic_height))
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svg.stream.rectangle(0, 0, width, height)
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svg.stream.clip()
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svg.stream.end()
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svg.stream.push_state()
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svg.stream.transform(a=scale_x, d=scale_y, e=translate_x, f=translate_y)
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image.draw(
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svg.stream, intrinsic_width, intrinsic_height, image_rendering='auto')
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svg.stream.pop_state()
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