temporary FIX: drawToPMCanvas -> dpi ignored#7
Open
radjkarl wants to merge 1 commit intoDistrotech:masterfrom
Open
temporary FIX: drawToPMCanvas -> dpi ignored#7radjkarl wants to merge 1 commit intoDistrotech:masterfrom
radjkarl wants to merge 1 commit intoDistrotech:masterfrom
Conversation
Hi there, when creating a raster image from an SVG with dpi values different then 72, the image range is scaled, but not the image itself. Version used: 0.8.1 Minimum working example: ` import numpy as np from lxml import etree from svglib.svglib import SvgRenderer from reportlab.graphics import renderPM import pylab as plt s = ''' <svg xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:cc="http://creativecommons.org/ns#" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:svg="http://www.w3.org/2000/svg" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" width="100mm" height="100mm" > <image x="0mm" y="27mm" width="45mm" height="45mm" xlink:href="data:image/jpeg;base64,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"/> <text x="22.5mm" y="50mm" font-family="sans-serif" font-size="4.666666666666667mm" fill="black">aaaaa</text> <text x="77.5mm" y="50mm" font-family="sans-serif" font-size="4.666666666666667mm" fill="black">bbb</text> </svg>'''.encode('UTF-8') parser = etree.XMLParser(remove_comments=True, recover=True) xml = etree.fromstring(s, parser=parser) for dpi in (72, 150, 300): drw = SvgRenderer('_tempfile.svg').render(xml) pil = renderPM.drawToPIL(drw, dpi=dpi) plt.figure(dpi) plt.imshow(np.array(pil)) plt.show() ` This generated the following output:  Output after fix:  I am sure that there is a better way ... such as incorporating d.renderScale (in renderScaledDrawing) right
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Hi there,
when creating a raster image from an SVG with dpi values different then 72, the image range is scaled, but not the image itself.
Version used: 0.8.1
Minimum working example:
`
import numpy as np
from lxml import etree
from svglib.svglib import SvgRenderer
from reportlab.graphics import renderPM
import pylab as plt
s = ''' <svg
xmlns:dc="http://purl.org/dc/elements/1.1/"
xmlns:cc="http://creativecommons.org/ns#"
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:svg="http://www.w3.org/2000/svg"
xmlns="http://www.w3.org/2000/svg"
xmlns:xlink="http://www.w3.org/1999/xlink"
version="1.1"
width="100mm"
height="100mm" >
aaaaa
bbb
'''.encode('UTF-8')
parser = etree.XMLParser(remove_comments=True, recover=True)
xml = etree.fromstring(s, parser=parser)
for dpi in (72, 150, 300):
drw = SvgRenderer('_tempfile.svg').render(xml)
pil = renderPM.drawToPIL(drw, dpi=dpi)
plt.figure(dpi)
plt.imshow(np.array(pil))
plt.show()
`
This generated the following output:
Output after fix:
I am sure that there is a better way ... such as incorporating d.renderScale (in renderScaledDrawing) right