public struct PicSize
{
public int Width;
public int Height;
}
public static PicSize AdjustSize( int spcWidth, int spcHeight, int orgWidth, int orgHeight)
{
PicSize size = new PicSize();
if (orgWidth <= spcWidth && orgHeight <= spcHeight)
{
size.Width = orgWidth;
size.Height = orgHeight;
}
else
{
float w = orgWidth / ( float )spcWidth;
float h = orgHeight / ( float )spcHeight;
if (w > h)
{
size.Width = spcWidth;
size.Height = ( int )(w >= 1 ? Math.Round(orgHeight / w) : Math.Round(orgHeight * w));
}
else if (w < h)
{
size.Height = spcHeight;
size.Width = ( int )(h >= 1 ? Math.Round(orgWidth / h) : Math.Round(orgWidth * h));
}
else
{
size.Width = spcWidth;
size.Height = spcHeight;
}
}
return size;
}
|
原文http://blog.csdn.net/hanghwp/article/details/4517401
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