29 lines
689 B
Go
29 lines
689 B
Go
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package image
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// 定义尺寸规则
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var sizeArray = []uint32{1200, 1000, 750, 500, 128}
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// 裁剪尺寸阶梯
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var newSizeArray = []uint32{200, 400, 600, 800}
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func GetCurrentSize(clientSize uint32) uint32 {
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lenNewSize := len(newSizeArray)
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//大于最大尺寸则返回规则最大尺寸
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if clientSize >= newSizeArray[lenNewSize-1] {
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return newSizeArray[lenNewSize-1]
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}
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//小于最小尺寸则返回规则最小尺寸
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if clientSize < newSizeArray[0] {
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return clientSize
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}
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for k, v := range newSizeArray {
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if v == clientSize {
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return v
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}
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if clientSize > v && k < lenNewSize-1 && clientSize < newSizeArray[k+1] {
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return newSizeArray[k+1]
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}
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}
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return clientSize
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}
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