// Everything was written in English.
// Contac me (Knight) if there's any problem

//Autocenter v2.02
//March 20, 2013
//This script centers automatically all the text layers that are inside bubbles in photoshop.

//How to install:
//Place this script somewhere in your computer.
//Open photoshop and create an action that launchs this script.
//Assign a Function Key to this action (for example F12).


//How to use:
//You open the psd and you press F12 (if you chose this Function Key).
//It will automatically center all the text layers inside bubbles.

#target photoshop

function magicWand(x,y,t,a,c,s) {
    var desc = new ActionDescriptor();
    var ref = new ActionReference();
    ref.putProperty( charIDToTypeID('Chnl'), charIDToTypeID('fsel') );
    desc.putReference( charIDToTypeID('null'), ref );
    var positionDesc = new ActionDescriptor();
    positionDesc.putUnitDouble( charIDToTypeID('Hrzn'), charIDToTypeID('#Rlt'), x );
    positionDesc.putUnitDouble( charIDToTypeID('Vrtc'), charIDToTypeID('#Rlt'), y );
    desc.putObject( charIDToTypeID('T   '), charIDToTypeID('Pnt '), positionDesc );
    desc.putInteger( charIDToTypeID('Tlrn'), t);
    desc.putBoolean( charIDToTypeID('Mrgd'), s );
    if(!c) desc.putBoolean( charIDToTypeID( "Cntg" ), false );
    desc.putBoolean( charIDToTypeID('AntA'), a );
    executeAction( charIDToTypeID('setd'), desc, DialogModes.NO );
};

function layerPixels2Selection() {
   var desc = new ActionDescriptor();
   var ref = new ActionReference();
   ref.putProperty( charIDToTypeID( "Chnl" ), charIDToTypeID( "fsel" ) );
   desc.putReference( charIDToTypeID( "null" ), ref );
   var ref1 = new ActionReference();
   ref1.putEnumerated( charIDToTypeID( "Chnl" ), charIDToTypeID( "Chnl" ), charIDToTypeID( "Trsp" ) );
   desc.putReference( charIDToTypeID( "T   " ), ref1 );
   executeAction( charIDToTypeID( "setd" ), desc, DialogModes.NO );
}

function duplifill() {
   app.activeDocument.artLayers.add()
   app.activeDocument.selection.fill( whiteColor, ColorBlendMode.VIVIDLIGHT,100, false)
}

function findPV(h) {
   for (var i = 0; i <= 255; i++ ) {
      if (h[i]) { return i; }
   }
   return 0;
}

function boundshape(xt1,yt1,xt2,yt2) {
   var shapeRef = [[xt1,yt1],[xt1,yt2],[xt2,yt2],[xt2,yt1]]
   docRef.selection.select(shapeRef)
   docRef.selection.copy();
   var id30 = charIDToTypeID( "CpTL" );
   executeAction( id30, undefined, DialogModes.NO );
   var tempBounds = docRef.activeLayer.bounds;
   app.activeDocument.activeLayer.remove()
   return tempBounds
}

function getlayercolor(xt3,yt3) {
   var MyState0 = app.activeDocument.activeHistoryState;
   app.activeDocument.flatten(); 
   magicWand(xt3,yt3,0,false,true,true)
   var maxred = findPV(docRef.channels["Red"].histogram);
   var maxgreen = findPV(docRef.channels["Green"].histogram); 
   var maxblue = findPV(docRef.channels["Blue"].histogram); 
   app.activeDocument.activeHistoryState = MyState0;
   return Math.min(maxred,maxgreen,maxblue) 
}

function createbubblelayer(xt2,yt2) {
   magicWand(xt2,yt2, 0 , false, true, true)
   var selRef = app.activeDocument.selection
   selRef.contract( 4 )
   selRef.expand( 3 )
   duplifill()
   magicWand(xt2,yt2, 0 , false, true, true)
   duplifill()
   app.activeDocument.artLayers[1].remove()
   app.activeDocument.activeLayer=app.activeDocument.artLayers[0]
}

function textlayerstate() {
   var emptytext=false
   layerPixels2Selection();
   try {
      docRef.selection.copy();
      } catch(e) {
      emptytext=true
   }
return emptytext
}

function bubblebound(xt3,yt3) {
   magicWand(xt3,yt3,0,false,true,true)
   var selRef = app.activeDocument.selection
   duplifill()
   var tempBounds = docRef.activeLayer.bounds;
   app.activeDocument.activeLayer.remove()
   return tempBounds
}

function findareacenter(yt4,qsizey1) {
   var theBounds1 = boundshape(0,yt4,px0-1,yt4+1);
   var theBounds2 = boundshape(0,yt4-qsizey1,px0-1,yt4+1-qsizey1);
   var theBounds3 = boundshape(0,yt4+qsizey1,px0-1,yt4+1+qsizey1);
   var posxtext2= (theBounds1[0]+theBounds1[2]+theBounds2[0]+theBounds2[2]+theBounds3[0]+theBounds3[2])/6
   var theBounds1 = boundshape(posxtext2,0,posxtext2+1,py0-1);
   var qsizex1= (theBounds1[2] - theBounds1[0])/4;
   var theBounds2 = boundshape(posxtext2-qsizex1,0,posxtext2+1-qsizex1,py0-1);
   var theBounds3 = boundshape(posxtext2+qsizex1,0,posxtext2+1+qsizex1,py0-1);
  return [Math.round(posxtext2),Math.round((theBounds1[1]+theBounds1[3]+theBounds2[1]+theBounds2[3]+theBounds3[1]+theBounds3[3])/6)]
}

function findnewpos() {
      var result = [0,0,0,0,activeDocument.activeLayer.textItem.position[0],activeDocument.activeLayer.textItem.position[1]]
      if (textlayerstate()==false) {
         docRef.paste();
         var theBounds = docRef.activeLayer.bounds;
         result[2] = Math.round((theBounds[0]+ theBounds[2])/2);
         result[3] = Math.round((theBounds[1]+ theBounds[3])/2);
         docRef.activeLayer.remove();
         app.activeDocument.activeLayer.visible = false
         var theBounds = bubblebound(result[2],result[3]);
         if (!((theBounds[2] - theBounds[0]<11)||(theBounds[3] - theBounds[1]<11)||(getlayercolor(result[2],result[3])<250))) {
            createbubblelayer(result[2],result[3])
            var theBounds = docRef.activeLayer.bounds;
            var theWidth = theBounds[2] - theBounds[0];
            var theHeight = theBounds[3] - theBounds[1];
            if ((theWidth<px0-15)&&(theHeight<py0-20)&&(theHeight*theWidth<4*px0*py0)) {
               var thecenter = findareacenter((theBounds[1]+ theBounds[3])/2,theHeight/4)
               result[0]=thecenter[0]
               result[1]=thecenter[1]
            }
            docRef.selection.deselect(); 
            app.activeDocument.activeLayer.remove()
         }
      }
      return result
}

function listlayerpos(LG){
   var layerlength=LG.layers.length
   for(i=0;i<layerlength;i++){
      if ((LG.layers[i].kind == LayerKind.TEXT)&&(LG.layers[i].visible==true)) {
         layerindpos[totalcount]=[LG.layers[i].textItem.position[0],LG.layers[i].textItem.position[1]]
         activeDocument.activeLayer = LG.layers[i]
         var newpos=findnewpos()
         LG.layers[i].visible=true
         layerindnewpos[totalcount]=newpos
         totalcount=totalcount + 1
      };
   };
}

function listlayerposall(){
   listlayerpos(app.activeDocument)
   jmax=activeDocument.layerSets.length
   if (jmax>0) {
      for(j=0;j<jmax;j++){
         listlayerpos(app.activeDocument.layerSets[j])
      }
   }
}

function movelayerpos(LG){
   for(i=0;i<LG.layers.length;i++){
      if ((LG.layers[i].kind == LayerKind.TEXT)&&(LG.layers[i].visible==true)) {
         if ((layerindnewpos[totalcount2][0]>0)||(layerindnewpos[totalcount2][1]>0)) {
            var new1posx=layerindnewpos[totalcount2][4]-layerindnewpos[totalcount2][2]+layerindnewpos[totalcount2][0]
            var new1posy=layerindnewpos[totalcount2][5]-layerindnewpos[totalcount2][3]+layerindnewpos[totalcount2][1]
            LG.layers[i].textItem.position = Array(new1posx, new1posy);
         }
         totalcount2=totalcount2 + 1
      };
   };
}

function movelayerposall(){
   movelayerpos(app.activeDocument)
   jmax=activeDocument.layerSets.length
   if (jmax>0) {
      for(j=0;j<jmax;j++){
         movelayerpos(app.activeDocument.layerSets[j])
      }
   }
}

if ( !(documents.length == 0)) {
   activeDocument.resizeImage(null, null, 72, ResampleMethod.NONE);
   docRef = activeDocument;
   app.preferences.rulerUnits = Units.PIXELS
   app.preferences.typeUnits = TypeUnits.PIXELS
   var acmode=activeDocument.mode
   app.activeDocument.changeMode(ChangeMode.RGB);
   var layerindpos=new Array();
   var layerindnewpos=new Array();
   var px0 = app.activeDocument.width
   var py0 = app.activeDocument.height
   var whiteColor = new SolidColor()
   whiteColor.rgb.red = 255
   whiteColor.rgb.green = 255
   whiteColor.rgb.blue = 255
   var totalcount=0
   var totalcount2=0
   listlayerposall()
   if (totalcount>0) {
      for(i=0;i<totalcount;i++){
         var samebubble=0
         if (i<totalcount-1) {
             for(j=i+1;j<totalcount;j++){
                 if ((Math.abs(layerindnewpos[i][0]-layerindnewpos[j][0])<10)&&(Math.abs(layerindnewpos[i][1]-layerindnewpos[j][1])<10)) {
                    samebubble=samebubble+1
                    layerindnewpos[j][0]=0
                    layerindnewpos[j][1]=0
                 }
             }
         }
         if (samebubble>0) {
            layerindnewpos[i][0]=0
            layerindnewpos[i][1]=0
         }
      }
      movelayerposall()
   }
   if (acmode=="DocumentMode.GRAYSCALE")
   app.activeDocument.changeMode(ChangeMode.GRAYSCALE);
}