more js mode examples: user and file input

javascript/examples/Environment/FileReader/FileReader.pde

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+/**
+ *    <form><input type="file" id="file-input"/></form>
+ *
+ *    No Safari support.
+ */
+ 
+ PImage img = null;
+ 
+ void setup ()
+ {
+     size(300, 200);
+ }
+ 
+ void draw ()
+ {
+     background(255);
+     if ( img != null ) image(img, 0,0, width,height);
+ }
+ 
+ void newImageAvailable ( Image i )
+ {
+     img = new PImage( i );
+ }

javascript/examples/Environment/FileReader/reader.js

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+
+window.onload = function () {
+    tryFindSketch();
+}
+
+function tryFindSketch() {
+    var sketch = Processing.instances[0];
+    if ( sketch == undefined )
+        return setTimeout(tryFindSketch, 200); // retry soon
+    
+    sketch.console = console;
+    initUploader(sketch);
+}
+
+function initUploader ( sketch ) {
+    var uploadField = document.getElementById("file-input");
+    
+    uploadField.onchange = function (e) {
+        e.preventDefault();
+        
+        var file = uploadField.files[0];
+        var reader = new FileReader();
+        
+        reader.onload = function (event) {
+            var img = new Image();
+            img.onload = function (event2) {
+                sketch.newImageAvailable(img);
+            }
+            img.src = event.target.result;
+        };
+        reader.readAsDataURL(file);
+        
+        return false;
+    }
+}

javascript/examples/Environment/Input/lockedIn/lockedIn.pde

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+/**
+ *  Promt for user input
+ */
+ 
+String password = null;
+boolean locked = false;
+int nextLock = 0;
+ 
+void setup ()
+{
+    size( 300, 200 );
+    
+    textFont(createFont("Arial", 22));
+    textAlign(CENTER);
+}
+
+void draw ()
+{
+    if ( password == null )
+    {        
+        background( 255 );
+        
+        fill( 0 );
+        text( "Please set a password \n(click here)", width/2, height/2);
+    }
+    else if ( locked )
+    {
+        background( 100 );
+        
+        fill( 255 );
+        text( "LOCKED, click to unlock", width/2, height/2);
+    }
+    else
+    {
+        background( 255 );
+        
+        fill( 0 );
+        text( "UNLOCKED\nwill lock in "+int(ceil((nextLock-millis())/1000))+" secs", width/2, height/2);
+        
+        if ( nextLock-millis() < 0 ) locked = true;
+    }
+}
+
+/*void mouseMoved ()
+{
+    if ( password != null && !locked )
+        nextLock = millis() + 5000;
+}*/
+
+void mousePressed ()
+{
+    if ( js != null ) 
+    {
+        if ( password == null )
+        {
+            password = js.promtForInput( "Please set and remember a password", "***********" );
+            nextLock = millis() + 5000;
+        }
+        else if ( locked )
+        {
+            String passTry = js.promtForInput( "Enter your password", "" );
+            while ( passTry != null && !passTry.equals(password) )
+            {
+                passTry = js.promtForInput( "Nope, try again", "" );
+                if ( passTry == null ) break;
+            }
+            locked = passTry != null && !passTry.equals(password);
+            if ( !locked )
+                nextLock = millis() + 5000;
+        }
+    }
+}
+
+
+// this is needed to define a way for us to be able to call out
+
+interface JavaScript
+{
+    String promtForInput( String message, String defaultAnswer );
+}
+
+JavaScript js;
+
+void setJS ( JavaScript jsi )
+{
+    js = jsi;
+}

javascript/examples/Environment/Input/lockedIn/promt.js

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+
+window.onload = function () {
+    tryFindSketch();
+}
+
+function tryFindSketch () {
+    var sketch = Processing.instances[0];
+    if ( sketch == undefined )
+        return setTimeout( tryFindSketch, 200 ); // try again in 0.2 secs
+    
+    sketch.setJS( this );
+}
+
+function promtForInput ( msg, def ) {
+    return window.prompt( msg, def );
+}