Processing 1.0 - Processing Discourse - G4P - GUI Inteface Library

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Index › Processing Development › Libraries, Tool Development › G4P - GUI Inteface Library - latest release

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G4P - GUI Inteface Library - latest release (Read 12432 times)

Monstah

Re: G4P - GUI Inteface Library - latest release
Reply #15 - Jun 14^th, 2009, 10:00pm

I just had an epiphany. I had to declare my visualizer class public so the draw handler would work. Here's an example:

Code:


import guicomponents.*;

Visualizer visualizer;

void setup(){
  size(400, 300);
  visualizer = new Visualizer(this);
  noLoop();
}

void draw(){
  background(192, 220, 192);
}

public class Visualizer extends GWindow {

  Visualizer(PApplet _theApplet){
    super(_theApplet, "Visualizer", 650, 100, 300, 200, false, P2D);
    this.addDrawHandler(this, "drawMe");
  }

  public void drawMe(GWinApplet appc, GWinData data){
    appc.background(220, 192, 192);
  }
}

Remove that public keyword from the class definition and you get the error I was having trouble with ^^

Quark

Re: G4P - GUI Inteface Library - latest release
Reply #16 - Jun 15^th, 2009, 4:14am

In Java it is best if all classes, methods and attributes have access specifiers i.e. public/protected/private but this will not always work in Processing for instance
Code:


public void setup(){
}

will produce an error in Processing. By default Processing declares everything as public but this doesn't seem to apply to class definitions.

PhiLho

Re: G4P - GUI Inteface Library - latest release
Reply #17 - Jun 4^th, 2010, 1:47am

Testing http://www.lagers.org.uk/g4p/applets/g4p_showcase/index.html mentioned by Cedric. Works fine. But when I activate the Panel Position Window, I get an error (on the setWindowAlwaysOnTop action) and I cannot close the secondary window (because apparently you attempt to call exit()).
Quote:

java.security.AccessControlException: access denied (java.awt.AWTPermission setWindowAlwaysOnTop)
at java.security.AccessControlContext.checkPermission(Unknown Source)
at java.security.AccessController.checkPermission(Unknown Source)
at java.lang.SecurityManager.checkPermission(Unknown Source)
at java.awt.Window.setAlwaysOnTop(Unknown Source)
at guicomponents.GWindow.setOnTop(GWindow.java:268)
at guicomponents.GWindow.windowCtorCore(GWindow.java:227)
at guicomponents.GWindow.<init>(GWindow.java:138)
at G4P_Showcase.createControlWindow(G4P_Showcase.java:268)
at G4P_Showcase.handleButtonEvents(G4P_Showcase.java:221)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at guicomponents.GComponent.fireEvent(GComponent.java:266)
at guicomponents.GButton.mouseEvent(GButton.java:330)
at sun.reflect.GeneratedMethodAccessor8.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at processing.core.PApplet$RegisteredMethods.handle(PApplet.java:724)
at processing.core.PApplet.handleMouseEvent(PApplet.java:1591)
at processing.core.PApplet.dequeueMouseEvents(PApplet.java:1545)
at processing.core.PApplet.handleDraw(PApplet.java:1437)
at processing.core.PApplet.run(PApplet.java:1328)
at java.lang.Thread.run(Unknown Source)
Exception in thread "AWT-EventQueue-2" java.security.AccessControlException: access denied (java.lang.RuntimePermission exitVM.0)
at java.security.AccessControlContext.checkPermission(Unknown Source)
at java.security.AccessController.checkPermission(Unknown Source)
at java.lang.SecurityManager.checkPermission(Unknown Source)
at java.lang.SecurityManager.checkExit(Unknown Source)
at java.lang.Runtime.exit(Unknown Source)
at java.lang.System.exit(Unknown Source)
at guicomponents.GWindow$1.windowClosing(GWindow.java:211)
at java.awt.Window.processWindowEvent(Unknown Source)
at java.awt.Window.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)

Quark

Re: G4P - GUI Inteface Library - latest release
Reply #18 - Jun 4^th, 2010, 7:14am

Quote:

I can't find a post from Cedric on this thread. Undecided

Also I have been unable to reproduce this error. The GWindow class has a setOnTop() method that calls setWindowAlwaysOnTop() from within a try/catch block (the catch will produce a stack trace - I need to change that for a simpler message) but an access denied exception should only be called if running as an Applet from a remote server.

Were you testing showcase from the downloaded library or from the web page? If the latter what platform/browser were you using.

PhiLho YaBB Moderator Offline Posts: 4190 Near Paris (France)	Re: G4P - GUI Inteface Library - latest release Reply #19 - Jun 4^th, 2010, 8:33am It was mentioned in the ControlP5: Buttons that are images thread... Just thought I should report here for better visibility. And it was from the Web page indicated above, on Windows XP, with Firefox 3.6. Indeed, perhaps the first stack trace was just dumped by your catch procedure.

Quark Senior Member Offline Posts: 411 UK	Re: G4P - GUI Inteface Library - latest release Reply #20 - Jun 5^th, 2010, 6:30am Thanks for letting me know and I will get rid of the stack trace and replace it with a friendly message in the next version.

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