用于批量更改打开的图片的尺寸的photoshop 脚本 (javascript)。

用法：

把解压出来的 “改变尺寸.jsx” 文件复制到 “ps安装目录\预置\脚本” 下，重新打开ps以后就可以在~
[菜单- 文件-脚本] 里面找到 “改变尺寸”

或者解压出来，在开着ps的情况下，直接双击也可以用。

功能介绍：

1. 可以把当前文档（包括未保存过的）直接修改尺寸并保存为jpg。（注意会关闭当前文档！）
2. 可以针对整个文件夹进行操作。(程序设定为“不包括隐藏文件”，因此不想处理和不能处理的文件可以先设置为[隐藏]属性)
3. 可选择另存jpg 、gif、psd、tiff至另一个文件夹。
4. 另存时支持文件名前后添加字符。
5. 处理进度条，在大量文件处理的时候对进度掌握更好。(3月2日修正了隐藏文件导致进度条不准的bug)
6. 修改了改变尺寸的算法，允许对不需要控制的尺寸留空（小于1或不填写即为留空，留空值将根据选项 不改变或者等比计算）
7. 水印添加功能—可以平铺或添加独个的水印；并可以使用ps众多的图层混合模式。
8. 修正了1.2版本保存gif 格式时颜色位数错误的bug 。

如果有朋友问：想要半透明水印怎么办？想要倾斜水印怎么办？
答：把水印文件做成半透明（保存为png或者psd 之类）和倾斜的即可，脚本界面就不另外放置参数了。

界面图示：

 

#target photoshop
app.bringToFront();
// 带自动判断横竖的统一宽高操作。默认是直接保存关闭，原文件要注意备份！ v2.0 - 2008.3.29
// 原发：bbs.blueidea.com  - Photoshop版
var nowTime=new Date();
var PRESOLUTION = 72;
var startRulerUnits = app.preferences.rulerUnits;
var startTypeUnits = app.preferences.typeUnits;
app.preferences.rulerUnits = Units.PIXELS;
app.preferences.typeUnits = TypeUnits.PIXELS;
var title="批量尺寸调整 v2.0 - "
        
res ="dialog { \
text:'"+title+"直接保存并关闭',\
        group: Group{orientation: 'column',alignChildren:'left',\
                top:StaticText{text:'默认为直接覆盖保存 - 请注意选择或做好备份'},\
                timeline:Progressbar{bounds:[0,0,300,10] , minvalue:0,maxvalue:100}\
                corrdination: Panel { orientation: 'row', \
                        text: '需要尺寸', \
                                x: Group { orientation: 'row', \
                                        s: StaticText { text:'宽:' }, \
                                        e: EditText { preferredSize: [50, 20] } ,\
                                        p: StaticText { text:'px' }, \
                                        }, \
                                y: Group { orientation: 'row', \
                                        s: StaticText { text:'高:' }, \
                                        e: EditText { preferredSize: [50, 20] }, \
                                        p: StaticText { text:'px' }, \
                                        } ,\
                                }, \
                a:Group{ orientation: 'row', \
                                c: Checkbox { text:' 保持原图宽高比，新尺寸仅作外框限定',helpTip:'原图比例不变,调整后宽/高均小于等于输入值'} ,\
                                }, \
                b:Group{ orientation: 'row', \
                                c: Checkbox { text:' 不判断原图横竖',helpTip:'不根据原图的横竖自动对应尺寸,宽/高均以输入为准'} ,\
                                }, \
                now:Group{ orientation: 'row', \
                                c: Checkbox { text:' 对文件夹进行操作（否则处理所有目前打开的文档）'} ,\
                                }, \
                folderO:Group{ orientation: 'row', \
                                b: Button {text:'待处理文件夹', properties:{name:'open'} ,helpTip:'选择您需要处理的文件所在的文件夹'},\
                                s: EditText  { text:'', preferredSize: [180, 20] },\
                                },\
                shui:Group{ orientation: 'row', \
                                c: Checkbox { text:' 为图片添加水印'} ,\
                                g: Group {\
                                        one:RadioButton {text:'单一' ,helpTip:'只添加一个水印图,可控制添加位置'},\
                                        fill:RadioButton {text:'平铺' ,helpTip:'多个水印图平铺布满画面,可控制间距'},\
                                    }\
                                }, \
                shuiSet: Panel {orientation: 'row', \
                        text: '水印设置', \
                                    position:Group{ orientation: 'column',alignChildren:'left',\
                                                po1:Group{ orientation: 'row',\
                                                    c1:Checkbox { helpTip:'以左上角为基准', preferredSize: [14, 14]} ,\
                                                    c2:Checkbox { helpTip:'以上中点为基准', preferredSize: [14, 14]} ,\
                                                    c3:Checkbox { helpTip:'以右上角为基准', preferredSize: [14, 14]} ,\
                                                    }, \
                                                po2:Group{ orientation: 'row', \
                                                    c4:Checkbox { helpTip:'以左中点为基准', preferredSize: [14, 14]} ,\
                                                    c5:Checkbox { helpTip:'以正中心为基准', preferredSize: [14, 14]} ,\
                                                    c6:Checkbox { helpTip:'以右中点为基准', preferredSize: [14, 14]} ,\
                                                    }, \
                                                po3:Group{ orientation: 'row', \
                                                    c7:Checkbox { helpTip:'以左下角为基准', preferredSize: [14, 14]} ,\
                                                    c8:Checkbox { helpTip:'以下中点为基准', preferredSize: [14, 14]} ,\
                                                    c9:Checkbox { helpTip:'以右下角为基准', preferredSize: [14, 14]} ,\
                                                    }, \
                                    },\
                                    other:Group{ orientation: 'column',alignChildren:'left',\
                                                dis:Group{ orientation: 'row',\
                                                    s1: StaticText { text:'平距:'}, \
                                                    e1: EditText { preferredSize: [55, 20], helpTip:'距离参照点的水平距离;平铺状态下为间距(单位:像素)' } ,\
                                                    s2: StaticText { text:'垂距:'}, \
                                                    e2: EditText { preferredSize: [55, 20], helpTip:'距离参照点的垂直距离;平铺状态下为间距(单位:像素)' } ,\
                                                },\
                                                hun:Group{ orientation: 'row',\
                                                    s: StaticText { text:'混合:'}, \
                                                    d:DropDownList { alignment:'left', itemSize: [50,16] },\
                                                    s2: StaticText { text:'缩放:'}, \
                                                    e:EditText{ preferredSize: [38, 20], text:'1',helpTip:'水印与原始水印文件的缩放比例'},\
                                                },\
                                                open:Group{ orientation: 'row', \
                                                    b: Button {text:'选择水印文件', properties:{name:'open'} ,helpTip:'请确保文件为常用图片格式,且非gif动画'},\
                                                    e: EditText  { text:'', preferredSize: [86, 20] },\
                                                },\
                                    },\
                                },\
                other:Group{ orientation: 'row', \
                                c: Checkbox {text:' 启用另存'} ,\
                                g: Group {\
                                        jpeg:RadioButton {text:'JPEG'},\
                                        gif:RadioButton {text:'GIF'},\
                                        psd:RadioButton {text:'PSD'},\
                                        tiff:RadioButton {text:'TIFF'},\
                                    }\
                                }, \
                otherSet: Panel {orientation: 'column',alignChildren:'left',\
                        text: '另存设置', \
                        Quality: Group { orientation: 'row',  \
                                    c: Checkbox { text:'转换 ICC 配置',helpTip:'在储存前将 ICC 配置文件转换为 sRGB'} ,\
                                    s: StaticText { text:'压缩质量:' }, \
                                    d: DropDownList { alignment:'left', itemSize: [26,14] },\
                                    c2:Checkbox {text:'透明',helpTip:'包含基于颜色不透明度的透明性'},\
                                    }, \
                        head: Group { orientation: 'row',  \
                                    s: StaticText { text:'在文件名前添加字符:' }, \
                                    e: EditText { preferredSize: [50,20] } ,\
                                    s2: StaticText { text:'勿含非法字符' , enabled:flase }, \
                                    }, \
                        foot: Group { orientation: 'row',  \
                                    s: StaticText { text:'在文件名后添加字符:' }, \
                                    e: EditText { preferredSize: [50, 20] }, \
                                    s2: StaticText { text:'勿含非法字符' , enabled:flase}, \
                                    } ,\
                        otherF:Group{ orientation: 'row', \
                                    c: Checkbox { text:' 另存至其他文件夹'} ,\
                                    }, \
                        folderS:Group{ orientation: 'row', \
                                    b: Button {text:'另存至', properties:{name:'save'} ,helpTip:'选择您处理好的文件要保存至的文件夹'},\
                                    s: EditText  { text:'', preferredSize: [180, 20] },\
                                    },\
                        icc: Checkbox { text:' 储存时包含 ICC 配置文件',helpTip:'存为 GIF 格式时此选项无效'},\
                        },\
                },\
        buttons: Group { orientation: 'row', alignment: 'right',\
                s:StaticText {text:'[ABOUT]'},\
                Btnok: Button { text:'确定', properties:{name:'ok'} }, \
                Btncancel: Button { text:'取消', properties:{name:'cancel'} } \
                }, \
}";
        
win = new Window (res);
win.buttons.Btncancel.onClick = function () { //放弃
    app.preferences.rulerUnits = startRulerUnits;
    app.preferences.typeUnits = startTypeUnits;
    this.parent.parent.close();
}
win.buttons.s.onClick = function () {
alert("首发：bbs.blueidea.com  Photoshop专栏\r\n鸣谢：我爱蓝色、银子、蛋蛋、clz8206、洛辰妃子、Wonton",title+"关于");
}
function lock_b(){  //如果勾选了a,则b被锁定
        if(win.group.a.c.value){
                win.group.b.c.value=true;
        }
    }
win.group.a.c.onClick =function() { lock_b()};
win.group.b.c.onClick =function() { lock_b()};
// 打开文件夹的操作
var folderOpen=win.group.folderO
var folderSave=win.group.otherSet.folderS
folderOpen.b.onClick = function() {
        var defaultFolder = folderOpen.s.text;
        var testFolder = new Folder(defaultFolder);
        if (!testFolder.exists) {
            defaultFolder = "~";
        }
        var selFolder = Folder.selectDialog("选择待处理文件夹", defaultFolder);
        if ( selFolder != null ) {
            folderOpen.s.text = selFolder.fsName;
            folderOpen.s.helpTip = selFolder.fsName.toString();
        }
}
folderSave.b.onClick = function() {
        var defaultFolder = folderSave.s.text;
        var testFolder = new Folder(defaultFolder);
        if (!testFolder.exists) {
            defaultFolder = "~";
        }
        var selFolder = Folder.selectDialog("选择要储存至的文件夹", defaultFolder);
        if ( selFolder != null ) {
            folderSave.s.text = selFolder.fsName;
            folderSave.s.helpTip = selFolder.fsName.toString();
        }
}
win.group.shuiSet.other.open.b.onClick= function() //打开水印文件
{
    var selFile = File.saveDialog('选择水印文件');
    if ( selFile != null ) {
       win.group.shuiSet.other.open.e.text = selFile.fsName;
    }
}
// 初始化选项
if (app.documents.length == 0){
    win.group.now.c.value = true;
    win.group.folderO.enabled =true;
}else{
    win.group.folderO.enabled =false;
}
win.group.other.g.enabled =false;
win.group.otherSet.enabled =false;
win.group.other.g.jpeg.value = true; //默认保存为jpg
win.group.otherSet.icc.value =true; //默认保存icc
var saveType = "jpeg";
win.group.otherSet.Quality.c2.hide(); //隐藏第二选框
for (i=0;i<13;i++){ //初始化jpeg质量下拉
    win.group.otherSet.Quality.d.add("item", i );
}
win.group.otherSet.Quality.d.items[7].selected=true;
win.group.otherSet.Quality.d.helpTip ='JPEG 压缩质量 (值越大压缩后质量越高)';
win.group.shuiSet.enabled =false;
win.group.shui.g.enabled =false;
win.group.shui.g.one.value =true; //默认一个水印
win.group.shuiSet.position.po3.c9.value=true; //默认右下角
var jiaShui =false; //默认不添加水印
var sBlend=  new Array();
sBlend[0]= "正常,NORMAL";
sBlend[1]= "溶解,DISSOLVE";
sBlend[2]= "变暗,DARKEN";
sBlend[3]= "正片叠底,MULTIPLY";
sBlend[4]= "颜色加深,COLORBURN";
sBlend[5]= "线性加深,LINEARBURN";
sBlend[6]= "变亮,LIGHTEN";
sBlend[7]= "滤色,SCREEN";
sBlend[8]= "颜色减淡,COLORDODGE";
sBlend[9]= "线性减淡,LINEARDODGE";
sBlend[10]= "叠加,OVERLAY";
sBlend[11]= "柔光,SOFTLIGHT";
sBlend[12]= "强光,HARDLIGHT";
sBlend[13]= "亮光,VIVIDLIGHT";
sBlend[14]= "线性光,LINEARLIGHT";
sBlend[15]= "点光,PINLIGHT";
sBlend[16]= "实色混合,HARDMIX";
sBlend[17]= "差值,DIFFERENCE";
sBlend[18]= "排除,EXCLUSION";
sBlend[19]= "色相,HUE";
sBlend[20]= "饱和度,SATURATION";
sBlend[21]= "颜色,COLORBLEND";
sBlend[22]= "明度,LUMINOSITY";
//sBlend[23]= "深色,DARKERCOLOR";
//sBlend[24]= "浅色,LIGHTERCOLOR";
for (i=0;i<23;i++) {
    win.group.shuiSet.other.hun.d.add("item",sBlend[i].substring(0,sBlend[i].indexOf(",")));
}
win.group.shuiSet.other.hun.d.items[0].selected=true;
//操作文件夹开关
win.group.now.c.onClick =function(){
    if (win.group.folderO.enabled) {
        win.group.folderO.enabled =false;
        }else{
        win.group.folderO.enabled =true;
        }
}
//另存开关
win.group.other.c.onClick =function(){
    if (win.group.otherSet.enabled) {
        win.group.other.g.enabled =false;
        win.group.otherSet.enabled =false;
        win.text=title+'直接保存并关闭';
        }else{
        win.group.other.g.enabled = true;
        win.group.otherSet.enabled =true;
        win.text=title+'另存为并关闭';
        if (!win.group.otherSet.otherF.c.value) {win.group.otherSet.folderS.enabled =false}
        }
}
//另存至文件夹开关
win.group.otherSet.otherF.c.onClick =function(){
    if (win.group.otherSet.folderS.enabled) {
        win.group.otherSet.folderS.enabled =false;        
        }else{
        win.group.otherSet.folderS.enabled =true;        
        }
}
//水印开关
win.group.shui.c.onClick =function(){
    if (win.group.shui.g.enabled) {
        win.group.shui.g.enabled =false;
        win.group.shuiSet.enabled =false;
        }else{
        win.group.shui.g.enabled =true;
        win.group.shuiSet.enabled =true;
        }
}
//定位开关
var allp=win.group.shuiSet.position;
function pointClear(nowP) {            
            allp.po1.c1.value =false;
            allp.po1.c2.value =false;
            allp.po1.c3.value =false;
            allp.po2.c4.value =false;
            allp.po2.c5.value =false;
            allp.po2.c6.value =false;
            allp.po3.c7.value =false;
            allp.po3.c8.value =false;
            allp.po3.c9.value =false;
            nowP.value =true;
    }
allp.po1.c1.onClick =function() {pointClear(this)}
allp.po1.c2.onClick =function() {pointClear(this)}
allp.po1.c3.onClick =function() {pointClear(this)}
allp.po2.c4.onClick =function() {pointClear(this)}
allp.po2.c5.onClick =function() {pointClear(this)}
allp.po2.c6.onClick =function() {pointClear(this)}
allp.po3.c7.onClick =function() {pointClear(this)}
allp.po3.c8.onClick =function() {pointClear(this)}
allp.po3.c9.onClick =function() {pointClear(this)}
//格式选项转换
win.group.other.g.jpeg.onClick =function() {
    changeType("jpeg");}
win.group.other.g.gif.onClick =function() {
    changeType("gif");}
win.group.other.g.psd.onClick =function() {
    changeType("psd");}
win.group.other.g.tiff.onClick =function() {
    changeType("tiff");}
//格式选项控制
function changeType(type){
    saveType=type;
    var don=win.group.otherSet.Quality;
        switch (type) {
        case "jpeg" :            
            don.c.text ='转换 ICC 配置' ;
            don.c.helpTip ='在储存前将 ICC 配置文件转换为 sRGB'
            don.c.value =false;
            don.s.text ='压缩质量:';
            don.d.helpTip ='JPEG 压缩质量 (值越大压缩后质量越高)';
            don.d.removeAll();
            for (i=0;i<13;i++){
                don.d.add("item", i );
            }
            don.d.items[7].selected=true;
            don.s.show();            
            don.d.show();
            don.c2.hide();
            win.text=title+'另存为 JPG 格式';
            break;
        case "gif" :
            don.c.text ='启用扩散仿色' ;
            don.c.helpTip ='储存为 GIF 格式时使用扩散防色算法'
            don.c.value =true;
            don.s.text ='颜色位数:';
            don.d.helpTip ='GIF 颜色位数 (值越大压缩后质量越高)';
            don.d.removeAll();
            for (i=2;i<257;i=i*2){
                don.d.add("item",i);
            }
            don.d.items[7].selected=true;
            don.c2.value =true;        
            don.s.show();
            don.d.show();
            don.c2.show();            
            win.text=title+'另存为 GIF 格式';
            break;
        case "psd" :
            don.c.text  ='最大兼容' ;
            don.c.helpTip ='储存为 PSD 格式是实现最大兼容'
            don.c.value =true;
            don.s.hide();
            don.d.hide();
            don.c2.hide();
            win.text=title+'另存为 PSD 格式';
            break;
        case "tiff" :
            don.c.text  ='LZW压缩' ;
            don.c.helpTip ='用 TIFF 格式储存时使用 LZW 压缩'
            don.c.value =false;
            don.s.hide();
            don.d.hide();
            don.c2.hide();
            win.text=title+'另存为 TIFF 格式';
        }
    win.reload();
}
function fillPattern(name,id,opacity) {  //填充图案
    var desc4 = new ActionDescriptor();
    desc4.putEnumerated( charIDToTypeID( "Usng" ), charIDToTypeID( "FlCn" ), charIDToTypeID( "Ptrn" ) );
        var desc5 = new ActionDescriptor();
        desc5.putString( charIDToTypeID( "Nm  " ), name );
        //desc5.putString(  charIDToTypeID( "Idnt" ), id );
    desc4.putObject( charIDToTypeID( "Ptrn" ), charIDToTypeID( "Ptrn" ), desc5 );
    desc4.putUnitDouble( charIDToTypeID( "Opct" ), charIDToTypeID( "#Prc" ), opacity );
    desc4.putEnumerated( charIDToTypeID( "Md  " ), charIDToTypeID( "BlnM" ), charIDToTypeID( "Nrml" ) );
    executeAction( charIDToTypeID( "Fl  " ), desc4, DialogModes.NO );
};
function setPattern(name) { //定义图案
    var desc13 = new ActionDescriptor();
        var ref7 = new ActionReference();
        ref7.putClass( charIDToTypeID("Ptrn") );
    desc13.putReference( charIDToTypeID("null"), ref7 );
        var ref8 = new ActionReference();
        ref8.putProperty( charIDToTypeID("Prpr"),charIDToTypeID("fsel") );
        ref8.putEnumerated( charIDToTypeID("Dcmn"), charIDToTypeID("Ordn"), charIDToTypeID("Trgt") );
    desc13.putReference( charIDToTypeID("Usng"), ref8 );
    desc13.putString( charIDToTypeID("Nm  "), name );
executeAction( charIDToTypeID("Mk  "), desc13, DialogModes.NO );    
}
function delPattern(){ //删除图案
    var desc92 = new ActionDescriptor();
        var ref53 = new ActionReference();
        ref53.putIndex( charIDToTypeID( "Ptrn" ), 178 );
    desc92.putReference( charIDToTypeID( "null" ), ref53 );
executeAction( charIDToTypeID( "Dlt " ), desc92, DialogModes.NO );
}
// 实际处理开始
function newsize(docRef,a,b,x,y){ //改变图象尺寸函数
            var PW=x;
            var PH=y;    
            if (x<1 || y<1) b=true; //有一个值空缺的时候，不判断横竖            
            if (!b && x<y){  //确保PW>=PH
                PW=y;
                PH=x;
                }    
            
            var dw = docRef.width;
            var dh = docRef.height;
            var fw = PW;
            var fh = PH;
            
            if(!b && dh>dw){
                fw = PH;
                fh = PW;
            }
        
            if (x<1) fw=dw; //尺寸小于1则为 不做改变
            if (y<1) fh=dh;
        
            if(a){
                w1 =dw/fw;
                h1 =dh/fh;                    
                if(w1>h1){
                    fh =dh/w1;    
                }else{
                    fw =dw/h1;
                }            
                if (x<1 && y>=1) {fw=dw/h1;fh=y;} //有1个值不做限定的情况
                if (y<1 && x>=1) {fh =dh/w1;fw=x;}
            }
    docRef.resizeImage(fw, fh, PRESOLUTION, ResampleMethod.BICUBIC);
}

冬季倒计时Photoshop打造满山风雪 Photoshop制作绚丽的光晕特效

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