dotnet-with-claudecode: Skill for Claude Code

.claude/skills/fixing-avaloniaui-radialgradientbrush/SKILL.md

fixing-avaloniaui-radialgradientbrush is a skill for Claude Code from christian289/dotnet-with-claudecode. It costs 27 tokens per session (651 once invoked), scanned A, original, MIT.

A compatibility fix for AvaloniaUI’s RadialGradientBrush, a XAML feature that creates circular color gradients, when converting from WPF.

In plain words
What is it for?
Use it while converting WPF XAML to AvaloniaUI to find mismatched gradient settings and choose which value should be used for both.
Why use it?
AvaloniaUI can render the brush incorrectly when its GradientOrigin and Center differ, especially with a transparent first color stop.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

This is christian289/dotnet-with-claudecode's own configuration. It tells Claude Code how to work on dotnet-with-claudecode itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything dotnet-with-claudecode configures →

Reuse

Borrowing it

Nothing to install: this file belongs to christian289/dotnet-with-claudecode. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/christian289/dotnet-with-claudecode/main/.claude/skills/fixing-avaloniaui-radialgradientbrush/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/christian289/dotnet-with-claudecode

Made for: Claude Code.

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Per session 27 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 651 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00027 $0.00651
Opus 5 $0.00014 $0.00326
Sonnet 5 $0.00005 $0.00130
Haiku 4.5 $0.00003 $0.00065

Measured 11d ago against content hash 70707e85335e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

fixing-avaloniaui-radialgradientbrush scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.claude/skills/fixing-avaloniaui-radialgradientbrush/SKILL.md · 76 lines

What it actually says

AvaloniaUI RadialGradientBrush 호환성 수정

문제 배경

AvaloniaUI에서 RadialGradientBrush는 WPF와 달리 GradientOrigin과 Center 값이 다르면 정상 동작하지 않음.

관련 이슈: AvaloniaUI/Avalonia#19888

  • RadialGradientBrush doesn't work when the GradientOrigin is different than the Center and the first Stop is Transparent

변환 절차

1. RadialGradientBrush 감지

WPF XAML에서 <RadialGradientBrush> 요소를 찾고 GradientOrigin과 Center 속성값을 비교.

2. 불일치 시 사용자에게 선택 요청

GradientOrigin ≠ Center인 경우 반드시 사용자에게 다음 선택지를 제시:

RadialGradientBrush의 GradientOrigin과 Center 값이 다릅니다.
- GradientOrigin: {현재값}
- Center: {현재값}

AvaloniaUI에서는 두 값이 동일해야 정상 동작합니다.
어느 쪽 값으로 통일하시겠습니까?

1. GradientOrigin 값으로 통일 → 결과: GradientOrigin="{GO값}" Center="{GO값}"
2. Center 값으로 통일 → 결과: GradientOrigin="{C값}" Center="{C값}"

3. 변환 예시

WPF 원본:

<RadialGradientBrush GradientOrigin="20%,20%" Center="28%,28%" RadiusX="75%" RadiusY="75%">
    <GradientStop Color="White" Offset="0"/>
    <GradientStop Color="Black" Offset="1"/>
</RadialGradientBrush>

AvaloniaUI 변환 (GradientOrigin 선택 시):

<RadialGradientBrush GradientOrigin="20%,20%" Center="20%,20%" RadiusX="75%" RadiusY="75%">
    <GradientStop Color="White" Offset="0"/>
    <GradientStop Color="Black" Offset="1"/>
</RadialGradientBrush>

AvaloniaUI 변환 (Center 선택 시):

<RadialGradientBrush GradientOrigin="28%,28%" Center="28%,28%" RadiusX="75%" RadiusY="75%">
    <GradientStop Color="White" Offset="0"/>
    <GradientStop Color="Black" Offset="1"/>
</RadialGradientBrush>

주의사항

  • 사용자가 선택하기 전까지 임의로 값을 변경하지 말 것
  • GradientOrigin 또는 Center 중 하나만 명시된 경우, 명시되지 않은 속성은 명시된 값으로 자동 설정
  • GradientOrigin과 Center가 이미 동일한 경우 수정 불필요
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 11d ago First seen · 76 lines · 27 tokens per session scan A 70707e85335e

Subscribe to this mod's changes

fixing-avaloniaui-radialgradientbrush is a skill published in the GitHub repository christian289/dotnet-with-claudecode (41 stars, last pushed 1mo ago), licensed MIT. It adds 27 tokens to every session and 651 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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