fix: shadow too hard caused by incorrect Qt.rgba usage

[BLumia]

由于对 Qt.rgba() 的误用导致阴影过硬,任务栏在下方时由于阴影方向是右下所以不明显,在左/上/右时很显著.

此处对误用进行修正,使用默认阴影透明度(60%).

Summary by Sourcery

Bug Fixes:

• Use proper alpha parameter in Qt.rgba for D.DWindow.shadowColor instead of multiplying 255 by 0.6

[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

Corrects the shadow color assignment by using the proper normalized alpha value for Qt.rgba, restoring the intended 60% opacity and improving comment context.

Class diagram for updated DWindow shadowColor assignment

classDiagram
    class Window {
    }
    class D_DWindow {
        shadowColor
        borderWidth
        enableBlurWindow
        themeType
        shadowColor = hideShowAnimation.running ? Qt.rgba(0, 0, 0, 0) : Qt.rgba(0, 0, 0, 0.6)
        borderWidth = hideShowAnimation.running ? 0 : 1
    }
    Window --> D_DWindow: uses
    class hideShowAnimation {
        running
    }
    Window --> hideShowAnimation: uses

Loading

File-Level Changes

Change	Details	Files
Fix incorrect usage of Qt.rgba for shadow opacity	Replaced Qt.rgba(0,0,0,255 * 0.6) with Qt.rgba(0, 0, 0, 0.6) Updated code comment to reference the default 60% shadow opacity and added a link to the source	panels/dock/package/main.qml

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[deepin-ci-robot]

deepin pr auto review

我来对这段代码变更进行审查：

1. 语法逻辑：

• 代码语法正确，没有语法错误
• 逻辑清晰，通过动画状态控制阴影和边框的显示/隐藏

2. 代码质量改进建议：

• 注释格式规范化：在"目前"前增加了空格，使注释更规范
• 添加了有价值的参考链接，便于理解默认阴影透明度的来源
• 代码格式优化：在rgba函数参数之间增加了空格，提高可读性

3. 代码性能：

• 性能方面没有明显问题，使用条件运算符进行简单的状态切换是高效的
• 使用Qt.rgba而不是硬编码的255 * 0.6更直观且性能相当

4. 代码安全：

• 没有安全相关的问题
• 代码处理的是UI相关的视觉效果，不涉及敏感操作

总体评价：
这是一个很好的代码改进，主要提升了代码的可读性和可维护性：

1. 注释更规范，添加了有价值的参考信息
2. 代码格式更统一，提高了可读性
3. 将255 * 0.6改为0.6更直观，且不影响性能

建议保持这个改动，它提高了代码质量而不影响功能。

[sourcery-ai]

Hey there - I've reviewed your changes and they look great!

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[deepin-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: BLumia, wjyrich

The full list of commands accepted by this bot can be found here.

Details

Needs approval from an approver in each of these files:

• debian/deepin/OWNERS

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