Problem: 优化 InfoDisplayWidget 中的文本框槽函数 #28
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#29 Problem: InfoDisplayWidget 中的文本框不容易输入负数
BigC/ArchitectureColoredPainting
Reference: BigC/ArchitectureColoredPainting#28
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以旋转举例:当使用右键拖动 PreviewWindow 时,其将触发 InfoDisplayWidget 的刷新。InfoDisplayWidget 刷新后,文本框中的文字变更,触发文本框槽函数,再次刷新。
这导致几乎每种操作都会额外触发一次重绘,非常消耗性能,需要优化。