PS是一款栅格图像编辑软件，模块众多。提供了脚本，动态连接库等多种扩展机制，本文演示如何通过脚本实现晕影动态和选区相关功能，展示从互联网收集而来的一个小插件，供大家学习交流，请勿用于商业用途。

1.插件界面

本文界面是一系列功能的一部分，将逐步展示，但是功能界面是共同的，如下图所示：

2.关键代码

2.1 选区

大家可通过源代码阅读，来掌握相关技巧，源代码如下：

var idslct = charIDToTypeID("slct");
var desc18 = new ActionDescriptor();
var idnull = charIDToTypeID("null");
var ref15 = new ActionReference();
var idmarqueeEllipTool = stringIDToTypeID("marqueeEllipTool");
ref15.putClass(idmarqueeEllipTool);
desc18.putReference(idnull, ref15);
var iddontRecord = stringIDToTypeID("dontRecord");
desc18.putBoolean(iddontRecord, true);
var idforceNotify = stringIDToTypeID("forceNotify");
desc18.putBoolean(idforceNotify, true);
executeAction(idslct, desc18, DialogModes.NO);

2.2 动态晕影

大家可通过源代码阅读，来掌握相关技巧，源代码如下：

win = new Window("dialog", "动态不透明度");
win.orientation = "column";
leftGr = win.add("group");
baton10 = leftGr.add("group");
leftGr.orientation = "column";
sliderGroup26 = leftGr.add("group");
sliderGroup26.orientation = "row";
sliderGroup26.alignChildren = ["fill", "fill"];
slTxt = sliderGroup26.add("staticText", undefined, "0");
slider6 = sliderGroup26.add("slider", undefined, 50, 0, 100);
slider6.preferredSize.width = 240;
sliderValue6 = sliderGroup26.add("statictext", undefined, " 50 ");
slider6.onChanging = function() {
    sliderValue6.text = Math.round(this.value);
};
slider6.onChange = function() {
    foo66 = Math.round(this.value);
    var idslct = charIDToTypeID("slct");
    var desc37 = new ActionDescriptor();
    var idnull = charIDToTypeID("null");
    var ref16 = new ActionReference();
    var idLyr = charIDToTypeID("Lyr ");
    ref16.putName(idLyr, "Vignette");
    desc37.putReference(idnull, ref16);
    var idMkVs = charIDToTypeID("MkVs");
    desc37.putBoolean(idMkVs, false);
    executeAction(idslct, desc37, DialogModes.NO);
    var idsetd = charIDToTypeID("setd");
    var desc18 = new ActionDescriptor();
    var idnull = charIDToTypeID("null");
    var ref10 = new ActionReference();
    var idLyr = charIDToTypeID("Lyr ");
    var idOrdn = charIDToTypeID("Ordn");
    var idTrgt = charIDToTypeID("Trgt");
    ref10.putEnumerated(idLyr, idOrdn, idTrgt);
    desc18.putReference(idnull, ref10);
    var idT = charIDToTypeID("T   ");
    var desc19 = new ActionDescriptor();
    var idOpct = charIDToTypeID("Opct");
    var idPrc = charIDToTypeID("#Prc");
    desc19.putUnitDouble(idOpct, idPrc, foo66);
    var idLyr = charIDToTypeID("Lyr ");
    desc18.putObject(idT, idLyr, desc19);
    executeAction(idsetd, desc18, DialogModes.NO);
    app.refresh();
};
closeBtn = leftGr.add("button", undefined, "关闭");
closeBtn.preferredSize.width = 270;
close = false;
closeBtn.onClick = function() {
    close = true;
    win.close();
};
win.onClose = function() {
    close = true;
};
win.show();
while (close === false) {
    app.refresh();
}

3.代码转执行

使用记事本或者notepad++等文本编辑器，将代码拷贝至文本文件，然后修改后缀名为js或者jsx，最后再PS软件菜单文件》脚本》浏览，点执行即可，也可以将脚本放在预设文件夹内，会显示再脚本下的二级子菜单。如下图所示：

4.作者答疑

---

文章引用至 作者联系方式

文章引用至 插件开发流程 - 知乎