feat: 选区支持可拖拽圆角半径 - #16
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lzx8589561 merged 1 commit intoAug 22, 2026
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Particaly
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Aug 15, 2026
Particaly
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- 选区四角内侧新增倒角手柄，拖拽沿对角线内移调整圆角半径（不改变选区矩形）
- 仅鼠标靠近某角或正拖拽时显示该角一个手柄，离开自动隐藏
- 手柄几何按 DPI 同步缩放，避免高 DPI 下手柄过小
- 调整选区时放大镜面板置于被拖手柄外侧，避免遮挡选区
- 圆角选区遮罩补充角帽，使圆角弧外不残留清晰直角三角
- 选区四角内侧新增倒角手柄，拖拽沿对角线内移调整圆角半径（不改变选区矩形） - 仅鼠标靠近某角或正拖拽时显示该角一个手柄，离开自动隐藏 - 手柄几何按 DPI 同步缩放，避免高 DPI 下手柄过小 - 调整选区时放大镜面板置于被拖手柄外侧，避免遮挡选区 - 圆角选区遮罩补充角帽，使圆角弧外不残留清晰直角三角
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