Kozea/WeasyPrint

support for svg mix-blend-mode: multiply

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#1,376 opened on Jun 4, 2021

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 (4 comments) (0 reactions) (0 assignees)Python (6,291 stars) (630 forks)batch import
featuregood first issue

Description

it's now supported in chrome, but it's new. any chance it can be supported here?

chrome: multiplied in chrome pdf: not in pdf

Contributor guide

Tech stack
pythoncss
Domain
backend
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
CSS blend modesSVG renderingPythonWeasyPrint architecture
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40
Research direction
Investigate WeasyPrint's SVG rendering pipeline. Identify where CSS properties are applied to SVG elements. Look for existing blend mode support in HTML rendering and extend to SVG. Check the CSS specification for mix blend mode and how it applies to SVG. Consider testing with the provided example.