Kozea/WeasyPrint
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Don’t mix original streams when drawing transparent text

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Fix #2038.
This commit is contained in:
Guillaume Ayoub 2024-01-14 13:58:41 +01:00
parent c3f0307fce
commit a4a6c7d9e9
1 changed files with 7 additions and 4 deletions
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11
weasyprint/svg/__init__.py
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@ -387,6 +387,8 @@ class SVG:
# Update font size
font_size = size(node.get('font-size', '1em'), font_size, font_size)
original_streams = []
if fill_stroke:
self.stream.push_state()
@ -401,7 +403,7 @@ class SVG:
# Create substream for opacity
opacity = float(node.get('opacity', 1))
if fill_stroke and 0 <= opacity < 1:
original_stream = self.stream
original_streams.append(self.stream)
box = self.calculate_bounding_box(node, font_size)
if not is_valid_bounding_box(box):
box = (0, 0, self.inner_width, self.inner_height)
@ -438,7 +440,8 @@ class SVG:
text_anchor = node.get('text-anchor')
if node.tag == 'text' and text_anchor in ('middle', 'end'):
group = self.stream.add_group(0, 0, 0, 0) # BBox set after drawing
original_stream, self.stream = self.stream, group
original_streams.append(self.stream)
self.stream = group
# Draw node
if visible and node.tag in TAGS:
@ -461,7 +464,7 @@ class SVG:
# Handle text anchor
if node.tag == 'text' and text_anchor in ('middle', 'end'):
group_id = self.stream.id
self.stream = original_stream
self.stream = original_streams.pop()
self.stream.push_state()
if is_valid_bounding_box(node.text_bounding_box):
x, y, width, height = node.text_bounding_box
@ -486,7 +489,7 @@ class SVG:
# Apply opacity stream and restore original stream
if fill_stroke and 0 <= opacity < 1:
group_id = self.stream.id
self.stream = original_stream
self.stream = original_streams.pop()
self.stream.set_alpha(opacity, stroke=True, fill=True)
self.stream.draw_x_object(group_id)