通过Photoshop Javascript获取图层的绘制区域尺寸

可以使用ArtLayer边界特性获取包含边界框坐标的数组,然后使用这些值生成由图层特性选项板显示的宽度和高度。例如,我有以下文档,“属性”选项板显示宽度和高度为4.17英寸。

使用以下代码,我可以捕获坐标x1、y1、x2和y2,然后从x2中减去x1,从y2中减去y1,以获得与“特性”选项板的输出相匹配的宽度和高度:

var activeDoc = app.activeDocument;
var layerBounds = activeDoc.activeLayer.bounds;
// this particular document, activeLayer.bounds returns:
// 0.41666666666667 in, 0.41666666666667 in, 4.5833333333333 in, 4.5833333333333 in
// x1, y1, x2, y2

// we specify the vlaue property so we only get the number without the ruler unit
var x1 = layerBounds[0].value;
var x2 = layerBounds[2].value;
var y1 = layerBounds[1].value;
var y2 = layerBounds[3].value;

// finally subtract x1 from x2 and y1 from y2 to get the widht and height and 
// fix the size to 2 decimal units to match the Properties palette
var layerPaintedWidth = (x2 - x1).toFixed(2); 
var layerPaintedHeight = (y2 - y1).toFixed(2);

// display the results in an alert dialog as 'W = 4.17, H = 4.17'
alert("W = " + layerPaintedWidth + ", H = " + layerPaintedHeight);

设置选择(例如:命令+选择图层),然后在跟踪选择标注的信息调色板中填充宽度和高度值。