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Defines the background image layout.
example
var rowImage = "./css/images/quarter1.png";
sheet.getCell(1, -1).backgroundImage(rowImage);
sheet.getCell(1, -1).backgroundImageLayout(GC.Spread.Sheets.ImageLayout.center);
• center = 1
Specifies that the background image displays in the center of the area.
• none = 3
Specifies that the background image displays in the upper left corner of the area with its original size.
• stretch = 0
Specifies that the background image fills the area.
• zoom = 2
Specifies that the background image displays in the area with its original aspect ratio.