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Reviewer's Guide实现仅在愚人节启用的 HMCL 蓝色主题（包括标题栏 Logo 模式、主题色相/色度，以及在设置界面中的曝光），将其接入中心化的主题服务并基于日期进行控制，同时在 4 月 1 日以外的时间重置或隐藏 HMCL 相关设置，并避免冗余的主题更新。 愚人节 HMCL 主题应用的时序图sequenceDiagram
participant User
participant PageSetupUI
participant ConfigTheme as Config.ThemePreference
participant ThemeService
participant ConfigWindow as Config.WindowPreference
participant ModSetup
participant FormMain
participant Basics
User->>PageSetupUI: Open settings page
PageSetupUI->>Basics: Check IsAprilFool
alt IsAprilFool == true
PageSetupUI-->>User: Show theme options [SkyBlue, CatBlue, DeathBlue, HMCL]
else IsAprilFool == false
PageSetupUI->>ConfigTheme: Ensure UiDarkColor != HmclBlue
PageSetupUI->>ConfigTheme: Ensure UiLightColor != HmclBlue
PageSetupUI-->>User: Show theme options [SkyBlue, CatBlue, DeathBlue]
end
User->>ConfigTheme: Select HMCL theme (April 1st)
ConfigTheme->>ThemeService: Trigger color config changed
ThemeService->>ThemeService: Validate change and mode
ThemeService->>ThemeService: ApplyColorResources()
ThemeService-->>User: ColorThemeChanged(CurrentTheme)
ThemeService->>ThemeService: _AprilFoolLogic()
alt IsAprilFool == true
ThemeService->>ConfigWindow: WindowTitleTypeConfig.TriggerEvent(Changed)
ConfigWindow->>ModSetup: UiLogoType(current value)
ModSetup->>ThemeService: Read CurrentTheme
alt CurrentTheme == HmclBlue
ModSetup->>ModSetup: Override Value = 4
end
ModSetup->>FormMain: Apply HMCL title logo mode
FormMain-->>User: Show HMCL logo and help button
else IsAprilFool == false and CurrentTheme == HmclBlue
ThemeService->>ThemeService: CurrentTheme = CatBlue
end
愚人节 HMCL 主题集成的类图classDiagram
class Basics {
+string VersionBranch
+bool IsAprilFool
}
class ColorTheme {
<<enumeration>>
SkyBlue
CatBlue
DeathBlue
HmclBlue
}
class Config {
}
class ThemePreference {
+ColorTheme LightColor
+ColorTheme DarkColor
+ConfigItem LightColorConfig
+ConfigItem DarkColorConfig
}
class WindowPreference {
+ConfigItem WindowTitleTypeConfig
+string WindowTitleCustomText
}
class ThemeService {
+bool IsDarkMode
+ColorTheme CurrentTheme
+event ColorThemeChanged(ColorTheme theme)
+event ColorModeChanged(bool isDark, ColorTheme theme)
+void ApplyColorResources()
+void ApplyGrayResources()
+static (int Hue, double LightAdjust, double ChromaAdjust) GetCurrentThemeColorConfig()
-static void _RefreshAll()
-static void _AprilFoolLogic()
}
class PageSetupUI {
+bool IsLoaded
+string[] ThemeColors
}
class ModSetup {
+void UiLogoType(int Value)
}
class FormMain {
+object ShapeTitleLogo
+object ShapeHMCLTitleLogo
+object LabTitleLogo
+object ImageTitleLogo
+object ImageHMCLTitleLogo
+object BtnTitleHelp
+void BtnTitleHelp_Click()
}
class ConfigItem {
+void SetValue(ColorTheme value)
+void TriggerEvent(ConfigEvent evt, object args)
}
Config <|.. ThemePreference
Config <|.. WindowPreference
ThemePreference --> ColorTheme
WindowPreference --> ConfigItem
ThemeService --> Basics : uses
ThemeService --> ThemePreference : uses
ThemeService --> WindowPreference : uses
ThemeService --> ColorTheme : manages
PageSetupUI --> Basics : checks IsAprilFool
PageSetupUI --> ColorTheme : uses HmclBlue index
ModSetup --> ThemeService : reads CurrentTheme
ModSetup --> FormMain : toggles title controls
FormMain --> Basics : implicit (app-wide utility)
ConfigItem ..> ColorTheme : SetValue
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获取帮助Original review guide in EnglishReviewer's GuideImplements an April Fools–only HMCL blue theme (including title-bar logo mode, theme hue/chroma, and setup UI exposure), wires it into the central theme service with date-based logic, and ensures HMCL-related settings are reset or hidden outside April 1st while guarding redundant theme updates. Sequence diagram for April Fools HMCL theme applicationsequenceDiagram
participant User
participant PageSetupUI
participant ConfigTheme as Config.ThemePreference
participant ThemeService
participant ConfigWindow as Config.WindowPreference
participant ModSetup
participant FormMain
participant Basics
User->>PageSetupUI: Open settings page
PageSetupUI->>Basics: Check IsAprilFool
alt IsAprilFool == true
PageSetupUI-->>User: Show theme options [SkyBlue, CatBlue, DeathBlue, HMCL]
else IsAprilFool == false
PageSetupUI->>ConfigTheme: Ensure UiDarkColor != HmclBlue
PageSetupUI->>ConfigTheme: Ensure UiLightColor != HmclBlue
PageSetupUI-->>User: Show theme options [SkyBlue, CatBlue, DeathBlue]
end
User->>ConfigTheme: Select HMCL theme (April 1st)
ConfigTheme->>ThemeService: Trigger color config changed
ThemeService->>ThemeService: Validate change and mode
ThemeService->>ThemeService: ApplyColorResources()
ThemeService-->>User: ColorThemeChanged(CurrentTheme)
ThemeService->>ThemeService: _AprilFoolLogic()
alt IsAprilFool == true
ThemeService->>ConfigWindow: WindowTitleTypeConfig.TriggerEvent(Changed)
ConfigWindow->>ModSetup: UiLogoType(current value)
ModSetup->>ThemeService: Read CurrentTheme
alt CurrentTheme == HmclBlue
ModSetup->>ModSetup: Override Value = 4
end
ModSetup->>FormMain: Apply HMCL title logo mode
FormMain-->>User: Show HMCL logo and help button
else IsAprilFool == false and CurrentTheme == HmclBlue
ThemeService->>ThemeService: CurrentTheme = CatBlue
end
Class diagram for April Fools HMCL theme integrationclassDiagram
class Basics {
+string VersionBranch
+bool IsAprilFool
}
class ColorTheme {
<<enumeration>>
SkyBlue
CatBlue
DeathBlue
HmclBlue
}
class Config {
}
class ThemePreference {
+ColorTheme LightColor
+ColorTheme DarkColor
+ConfigItem LightColorConfig
+ConfigItem DarkColorConfig
}
class WindowPreference {
+ConfigItem WindowTitleTypeConfig
+string WindowTitleCustomText
}
class ThemeService {
+bool IsDarkMode
+ColorTheme CurrentTheme
+event ColorThemeChanged(ColorTheme theme)
+event ColorModeChanged(bool isDark, ColorTheme theme)
+void ApplyColorResources()
+void ApplyGrayResources()
+static (int Hue, double LightAdjust, double ChromaAdjust) GetCurrentThemeColorConfig()
-static void _RefreshAll()
-static void _AprilFoolLogic()
}
class PageSetupUI {
+bool IsLoaded
+string[] ThemeColors
}
class ModSetup {
+void UiLogoType(int Value)
}
class FormMain {
+object ShapeTitleLogo
+object ShapeHMCLTitleLogo
+object LabTitleLogo
+object ImageTitleLogo
+object ImageHMCLTitleLogo
+object BtnTitleHelp
+void BtnTitleHelp_Click()
}
class ConfigItem {
+void SetValue(ColorTheme value)
+void TriggerEvent(ConfigEvent evt, object args)
}
Config <|.. ThemePreference
Config <|.. WindowPreference
ThemePreference --> ColorTheme
WindowPreference --> ConfigItem
ThemeService --> Basics : uses
ThemeService --> ThemePreference : uses
ThemeService --> WindowPreference : uses
ThemeService --> ColorTheme : manages
PageSetupUI --> Basics : checks IsAprilFool
PageSetupUI --> ColorTheme : uses HmclBlue index
ModSetup --> ThemeService : reads CurrentTheme
ModSetup --> FormMain : toggles title controls
FormMain --> Basics : implicit (app-wide utility)
ConfigItem ..> ColorTheme : SetValue
File-Level Changes
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Hey - 我发现了两个问题，并给出了一些总体反馈：
- IsAprilFool/IsAprilFool() 在 ThemeService 和 FormMain 中分别实现；建议将这部分逻辑集中到一个共享的辅助方法中，以避免重复实现和未来可能出现的不一致。
- ThemeService.OnColorThemeConfigChanged 处理函数现在包含嵌套的愚人节和深色/浅色模式判断；可以考虑把这部分决策逻辑提取到一个小的辅助方法中（例如，用来判断哪些配置键是相关的），这样会更容易理解和维护。
- 两处 IsAprilFool 实现都直接依赖 DateTime.Now；如果你预计需要模拟或覆盖这一行为（例如在非愚人节场景下做受控的行为），建议注入一个时钟或把日期访问封装到一个可重写/静态的提供者中。
面向 AI 代理的提示
Please address the comments from this code review:
## Overall Comments
- IsAprilFool/IsAprilFool() is implemented separately in ThemeService and FormMain; consider centralizing this logic in a single shared helper to avoid duplication and potential divergence.
- ThemeService.OnColorThemeConfigChanged handler now contains nested April Fools and dark/light mode checks; extracting this decision logic into a small helper (e.g., to determine which config keys are relevant) would make it easier to understand and maintain.
- Both IsAprilFool implementations rely directly on DateTime.Now; if you anticipate needing to simulate or override this behavior (e.g., for controlled behavior in non-April contexts), consider injecting a clock or wrapping the date access in a single overridable/static provider.
## Individual Comments
### Comment 1
<location path="PCL.Core/UI/Theme/ThemeService.cs" line_range="39-48" />
<code_context>
public static ConfigEventRegistry OnColorThemeConfigChanged => new(
- scope: [Config.Preference.Theme.DarkColorConfig, Config.Preference.Theme.LightColorConfig],
- trigger: ConfigEvent.Update,
- handler: e =>
+ scope: [
+ Config.Preference.Theme.DarkColorConfig,
+ Config.Preference.Theme.LightColorConfig,
+ Config.Preference.Theme.DarkColorFoolConfig,
+ Config.Preference.Theme.LightColorFoolConfig
+ ],
+ trigger: ConfigEvent.Update,
+ handler: e =>
+ {
+ if (e.OldValue == e.Value) return;
+
+ if (IsAprilFool())
+ {
+ if (IsDarkMode) { if (e.Item == Config.Preference.Theme.LightColorFoolConfig) return; }
+ else { if (e.Item == Config.Preference.Theme.DarkColorFoolConfig) return; }
+ }
+ else
{
</code_context>
<issue_to_address>
**suggestion:** Consider simplifying the April Fools / normal theme branch logic in the config change handler.
The nested `if` chain (`IsAprilFool` → `IsDarkMode` → `e.Item`) is hard to follow and will get more fragile as additional theme configs are added. Consider extracting a helper like `IsRelevantThemeConfig(e.Item)` or flattening into combined conditions so it’s clearer which keys are ignored for each mode/date and easier to keep the logic consistent over time.
</issue_to_address>
### Comment 2
<location path="PCL.Core/UI/Theme/ThemeService.cs" line_range="253" />
<code_context>
foreach (var c in colors) c.Apply();
}
+
+ public static bool IsAprilFool()
+ {
+ return DateTime.Now.Month == 4 && DateTime.Now.Day == 1;
</code_context>
<issue_to_address>
**suggestion:** Avoid duplicating the April Fools date check logic across different classes.
There’s already an `IsAprilFool` implementation in `FormMain` with the same logic. Having two separate helpers that control theme behavior risks them diverging if the logic changes (e.g., different time base, test overrides, time zones). Consider centralizing this check (e.g., in `ThemeService` or a shared utility) and using that single source of truth everywhere.
Suggested implementation:
```csharp
/// <summary>
/// Centralized check for whether it is April Fools' Day.
/// All theme / UI logic should rely on this single helper.
/// </summary>
public static bool IsAprilFool()
{
return DateTime.Now.Month == 4 && DateTime.Now.Day == 1;
}
```
To fully implement the suggestion and avoid duplication:
1. Remove the existing `IsAprilFool` implementation from `FormMain` (or any other class that defines it).
2. Update all call sites that currently use `FormMain.IsAprilFool()` (or any other duplicate) to call `ThemeService.IsAprilFool()` instead.
3. If there are unit tests that reference the old location, update them to use `ThemeService.IsAprilFool()` as the single source of truth.
</issue_to_address>帮我变得更有用！请在每条评论上点 👍 或 👎，我会根据你的反馈来改进后续的评审。
Original comment in English
Hey - I've found 2 issues, and left some high level feedback:
- IsAprilFool/IsAprilFool() is implemented separately in ThemeService and FormMain; consider centralizing this logic in a single shared helper to avoid duplication and potential divergence.
- ThemeService.OnColorThemeConfigChanged handler now contains nested April Fools and dark/light mode checks; extracting this decision logic into a small helper (e.g., to determine which config keys are relevant) would make it easier to understand and maintain.
- Both IsAprilFool implementations rely directly on DateTime.Now; if you anticipate needing to simulate or override this behavior (e.g., for controlled behavior in non-April contexts), consider injecting a clock or wrapping the date access in a single overridable/static provider.
Prompt for AI Agents
Please address the comments from this code review:
## Overall Comments
- IsAprilFool/IsAprilFool() is implemented separately in ThemeService and FormMain; consider centralizing this logic in a single shared helper to avoid duplication and potential divergence.
- ThemeService.OnColorThemeConfigChanged handler now contains nested April Fools and dark/light mode checks; extracting this decision logic into a small helper (e.g., to determine which config keys are relevant) would make it easier to understand and maintain.
- Both IsAprilFool implementations rely directly on DateTime.Now; if you anticipate needing to simulate or override this behavior (e.g., for controlled behavior in non-April contexts), consider injecting a clock or wrapping the date access in a single overridable/static provider.
## Individual Comments
### Comment 1
<location path="PCL.Core/UI/Theme/ThemeService.cs" line_range="39-48" />
<code_context>
public static ConfigEventRegistry OnColorThemeConfigChanged => new(
- scope: [Config.Preference.Theme.DarkColorConfig, Config.Preference.Theme.LightColorConfig],
- trigger: ConfigEvent.Update,
- handler: e =>
+ scope: [
+ Config.Preference.Theme.DarkColorConfig,
+ Config.Preference.Theme.LightColorConfig,
+ Config.Preference.Theme.DarkColorFoolConfig,
+ Config.Preference.Theme.LightColorFoolConfig
+ ],
+ trigger: ConfigEvent.Update,
+ handler: e =>
+ {
+ if (e.OldValue == e.Value) return;
+
+ if (IsAprilFool())
+ {
+ if (IsDarkMode) { if (e.Item == Config.Preference.Theme.LightColorFoolConfig) return; }
+ else { if (e.Item == Config.Preference.Theme.DarkColorFoolConfig) return; }
+ }
+ else
{
</code_context>
<issue_to_address>
**suggestion:** Consider simplifying the April Fools / normal theme branch logic in the config change handler.
The nested `if` chain (`IsAprilFool` → `IsDarkMode` → `e.Item`) is hard to follow and will get more fragile as additional theme configs are added. Consider extracting a helper like `IsRelevantThemeConfig(e.Item)` or flattening into combined conditions so it’s clearer which keys are ignored for each mode/date and easier to keep the logic consistent over time.
</issue_to_address>
### Comment 2
<location path="PCL.Core/UI/Theme/ThemeService.cs" line_range="253" />
<code_context>
foreach (var c in colors) c.Apply();
}
+
+ public static bool IsAprilFool()
+ {
+ return DateTime.Now.Month == 4 && DateTime.Now.Day == 1;
</code_context>
<issue_to_address>
**suggestion:** Avoid duplicating the April Fools date check logic across different classes.
There’s already an `IsAprilFool` implementation in `FormMain` with the same logic. Having two separate helpers that control theme behavior risks them diverging if the logic changes (e.g., different time base, test overrides, time zones). Consider centralizing this check (e.g., in `ThemeService` or a shared utility) and using that single source of truth everywhere.
Suggested implementation:
```csharp
/// <summary>
/// Centralized check for whether it is April Fools' Day.
/// All theme / UI logic should rely on this single helper.
/// </summary>
public static bool IsAprilFool()
{
return DateTime.Now.Month == 4 && DateTime.Now.Day == 1;
}
```
To fully implement the suggestion and avoid duplication:
1. Remove the existing `IsAprilFool` implementation from `FormMain` (or any other class that defines it).
2. Update all call sites that currently use `FormMain.IsAprilFool()` (or any other duplicate) to call `ThemeService.IsAprilFool()` instead.
3. If there are unit tests that reference the old location, update them to use `ThemeService.IsAprilFool()` as the single source of truth.
</issue_to_address>Help me be more useful! Please click 👍 or 👎 on each comment and I'll use the feedback to improve your reviews.
tangge233
reviewed
Mar 16, 2026
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有点复杂了，在当天显示 HMCL 主题选项，其余时候检查主题并做超范围重置工作应该就行了🤔
lhx077
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Hey - 我已经给出了一些整体层面的反馈：
- 当前愚人节相关逻辑分散在多个地方（ThemeService._AprilFoolLogic、PageSetupUI.ThemeColors、PageSetupUI_Loaded、UiLogoType、Basics.IsAprilFool）；建议把这个功能开关逻辑集中到一个地方（例如单独的 helper 或 service），以避免重复检查，也便于将来下线或修改。
- 在 ThemeService._AprilFoolLogic 中，直接修改 CurrentTheme 并触发 WindowTitleTypeConfig 事件，会在主题选择和标题栏 UI 之间形成隐式耦合；建议将这些操作封装到一个更高层级的 "ApplyAprilFoolUiState" 方法中，让这些副作用更加显式、易于理解。
- ColorTheme.HmclBlue 回退到 CatBlue 的特殊处理同时出现在 ThemeService._AprilFoolLogic 和 PageSetupUI_Loaded 中；如果把这种重置行为统一放在一个地方（例如 ThemeService 或某个 helper 中），可以降低规则变更时出现状态不一致的风险。
给 AI Agent 的提示
Please address the comments from this code review:
## Overall Comments
- The April Fools behavior is currently scattered (ThemeService._AprilFoolLogic, PageSetupUI.ThemeColors, PageSetupUI_Loaded, UiLogoType, Basics.IsAprilFool); consider centralizing the feature toggle logic (e.g., a single helper or service) to avoid duplicated checks and make future removal/changes easier.
- In ThemeService._AprilFoolLogic, directly mutating CurrentTheme and triggering WindowTitleTypeConfig events creates hidden coupling between theme selection and title-bar UI; consider encapsulating this in a higher-level "ApplyAprilFoolUiState" method so the side effects are explicit and easier to reason about.
- The special handling of ColorTheme.HmclBlue fallback to CatBlue appears in both ThemeService._AprilFoolLogic and PageSetupUI_Loaded; unifying this reset behavior in a single place (e.g., ThemeService or a helper) would reduce the chance of inconsistent state if the rules change.帮我变得更有用！请在每条评论上点 👍 或 👎，我会根据你的反馈来改进之后的 review。
Original comment in English
Hey - I've left some high level feedback:
- The April Fools behavior is currently scattered (ThemeService._AprilFoolLogic, PageSetupUI.ThemeColors, PageSetupUI_Loaded, UiLogoType, Basics.IsAprilFool); consider centralizing the feature toggle logic (e.g., a single helper or service) to avoid duplicated checks and make future removal/changes easier.
- In ThemeService._AprilFoolLogic, directly mutating CurrentTheme and triggering WindowTitleTypeConfig events creates hidden coupling between theme selection and title-bar UI; consider encapsulating this in a higher-level "ApplyAprilFoolUiState" method so the side effects are explicit and easier to reason about.
- The special handling of ColorTheme.HmclBlue fallback to CatBlue appears in both ThemeService._AprilFoolLogic and PageSetupUI_Loaded; unifying this reset behavior in a single place (e.g., ThemeService or a helper) would reduce the chance of inconsistent state if the rules change.
Prompt for AI Agents
Please address the comments from this code review:
## Overall Comments
- The April Fools behavior is currently scattered (ThemeService._AprilFoolLogic, PageSetupUI.ThemeColors, PageSetupUI_Loaded, UiLogoType, Basics.IsAprilFool); consider centralizing the feature toggle logic (e.g., a single helper or service) to avoid duplicated checks and make future removal/changes easier.
- In ThemeService._AprilFoolLogic, directly mutating CurrentTheme and triggering WindowTitleTypeConfig events creates hidden coupling between theme selection and title-bar UI; consider encapsulating this in a higher-level "ApplyAprilFoolUiState" method so the side effects are explicit and easier to reason about.
- The special handling of ColorTheme.HmclBlue fallback to CatBlue appears in both ThemeService._AprilFoolLogic and PageSetupUI_Loaded; unifying this reset behavior in a single place (e.g., ThemeService or a helper) would reduce the chance of inconsistent state if the rules change.Help me be more useful! Please click 👍 or 👎 on each comment and I'll use the feedback to improve your reviews.
ruattd
approved these changes
Mar 22, 2026
MoYuan-CN
approved these changes
Mar 22, 2026
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Summary by Sourcery
引入一个季节性 HMCL 颜色主题和标题栏外观，仅在 4 月 1 日启用，其余时间保持正常行为。
新功能：
改进：
Original summary in English
Summary by Sourcery
Introduce a seasonal HMCL color theme and title bar appearance that activates only on April 1st while preserving normal behavior otherwise.
New Features:
Enhancements: