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Apply Avalonia 12 migration changes: replace SystemDecorations with WindowDecorations and remove ExtendClientAreaChromeHints/ExtendClientAreaTitleBarHeightHint usages; update BindingPlugins removal logic (no-op); switch clipboard usage to ClipboardExtensions.SetTextAsync; update Bitmap.CopyPixels calls to the new signature. Replace TextBox.Watermark with PlaceholderText, convert NumberBox styles to FANumberBox and adjust templates, change Checked/Unchecked handlers to IsCheckedChanged, and adapt FluentIcons usages (SymbolIconSource -> FASymbol/FAFont/FluentIcon equivalents). Fix MainWindow partial classes to inherit Window and correct missing variables/fields/usings. Add migration docs/specs/tasks under .trae and include a small TestFluentIcons project for icon testing.
64 lines
3.1 KiB
Markdown
64 lines
3.1 KiB
Markdown
# Avalonia 12 迁移规格
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## Why
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Avalonia 12 带来性能改进(SkiaSharp 3.0、编译绑定默认开启)、新的窗口装饰体系(WindowDrawnDecorations)和更简洁的 API 设计。项目当前已升级包引用,但存在 18 个编译错误和若干过时 API 警告,需要系统性修复以确保构建通过。
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## What Changes
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- **BREAKING**: 移除 `ExtendClientAreaChromeHints` 和 `SystemDecorations` 的使用,迁移到 `WindowDecorations`
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- **BREAKING**: 移除 `BindingPlugins.DataValidators` 的使用(v12 已移除绑定插件体系)
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- **BREAKING**: 替换 `IClipboard.SetTextAsync` 为 `ClipboardExtensions.SetTextAsync`
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- **BREAKING**: 更新 `Bitmap.CopyPixels` 调用签名(移除 `AlphaFormat` 参数)
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- **BREAKING**: 替换 `FluentIcons.Avalonia.SymbolIconSource` 为 v3 等效 API
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- 修复 `MainWindow.ComponentSystem.cs` 和 `MainWindow.DesktopPaging.cs` 中缺失的字段/变量
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- 批量替换 `TextBox.Watermark` → `PlaceholderText`
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## Impact
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- 受影响代码:
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- `LanMountainDesktop/Views/SettingsWindow.axaml.cs`
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- `LanMountainDesktop/Views/ComponentEditorWindow.axaml.cs`
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- `LanMountainDesktop/Views/MainWindow.ComponentSystem.cs`
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- `LanMountainDesktop/Views/MainWindow.DesktopPaging.cs`
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- `LanMountainDesktop/App.axaml.cs`
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- `LanMountainDesktop/Views/Components/DesktopComponentFailureView.cs`
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- `LanMountainDesktop/Services/MonetColorService.cs`
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- 13 个 `.axaml` 文件(`SystemDecorations` → `WindowDecorations`)
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- 7 个 `.cs` 文件 + 7 个 `.axaml` 文件(`Watermark` → `PlaceholderText`)
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- 受影响规格:无现有规格直接关联
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## ADDED Requirements
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### Requirement: 窗口装饰 API 迁移
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系统 SHALL 使用 Avalonia 12 的 `WindowDecorations` 属性替代已移除的 `SystemDecorations` 和 `ExtendClientAreaChromeHints`。
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#### Scenario: SettingsWindow 无边框模式
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- **WHEN** `ApplyChromeMode(false)` 被调用
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- **THEN** `WindowDecorations = WindowDecorations.BorderOnly` 且 `ExtendClientAreaToDecorationsHint = true`
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#### Scenario: SettingsWindow 系统 Chrome 模式
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- **WHEN** `ApplyChromeMode(true)` 被调用
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- **THEN** `WindowDecorations = WindowDecorations.Full` 且 `ExtendClientAreaToDecorationsHint = true`
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### Requirement: 剪贴板 API 迁移
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系统 SHALL 使用 Avalonia 12 的 `ClipboardExtensions.SetTextAsync` 替代已移除的 `IClipboard.SetTextAsync`。
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### Requirement: Bitmap.CopyPixels 签名更新
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系统 SHALL 使用新的 `CopyPixels` 签名,不再传入 `AlphaFormat` 参数。
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### Requirement: FluentIcons v3 API 适配
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系统 SHALL 使用 `FluentIcons.Avalonia.FluentIcon` 替代已移除的 `SymbolIconSource`。
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## MODIFIED Requirements
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### Requirement: 编译绑定验证
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- **修改前**:`BindingPlugins.DataValidators.RemoveAt(0)` 移除默认数据注解验证插件
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- **修改后**:v12 默认禁用数据注解验证插件,无需手动移除
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## REMOVED Requirements
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### Requirement: ExtendClientAreaChromeHints 配置
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**Reason**: Avalonia 12 移除此属性,由 `WindowDecorations` 统一管理
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**Migration**: 删除所有 `ExtendClientAreaChromeHints` 赋值代码
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