librocket GUI support

[carharttguy]

Hmm, that's strange. Someone else has reported the same issue to me earlier, but he reported that getting the latest devel build worked for him. Could you try that and see if it works for you?

I downloaded the latest devel build (from today). And I have the _rocketcore.so file!

But.. When opening the rocket-sample's test.py, I got this:

Traceback (most recent call last):
File "test.py", line 1, in <module>
from panda3d.rocket import *
File "/usr/share/panda3d/panda3d.py", line 200, in __getattr__
for obj in dir(self.__manager__.libimport(lib)):
File "/usr/share/panda3d/panda3d.py", line 112, in libimport
return __import__(name)
ImportError: libRocketDebugger.so.1: cannot open shared object file: No such file or directory

So, now I'm in need of libRocketDebugger, which is not in my panda3d directory..

Thanks for al you guys help.

[rdb]

Sorry, my bad, I made a mistake when programming the buildbot. Let me know on which os/version/arch you are and I'll poke the buildbot to roll out a build for you. Or you can wait till tomorrow's build.

[carharttguy]

No problem!

No need to build it for me only, I'll just download new version tomorrow

Thanks!

[EdBighead]

In 1.8.0 can I create a p3d with libRocket? When I try I get this during the pack process:

Code: Select all

There are some missing modules: ['panda3d.core', 'panda3d.rocket']

And this when I run it:

Code: Select all

Traceback (most recent call last):
  File "C:\buildslave\release_rtdist_win32\build\panda3d\built_cmu\direct\showbase\Messenger.py", line 424, in __taskChainDispatch
  File "C:\buildslave\release_rtdist_win32\build\panda3d\built_cmu\direct\showbase\Messenger.py", line 482, in __dispatch
  File "C:\buildslave\release_rtdist_win32\build\panda3d\built_cmu\direct\p3d\AppRunner.py", line 748, in __startIfReady
  File "VFSImporter", line 153, in load_module
  File "C:\Users\Chris\Modifire\net\modifire\main.py", line 39, in <module>
    from gui.menus.MainMenu import MainMenu
  File "VFSImporter", line 153, in load_module
  File "C:\Users\Chris\Modifire\net\modifire\gui\menus\MainMenu.py", line 13, in <module>
    import Globals
  File "VFSImporter", line 153, in load_module
  File "C:\Users\Chris\Modifire\net\modifire\Globals.py", line 2, in <module>
    from panda3d.rocket import RocketRegion, RocketInputHandler, LoadFontFace
  File "C:\buildslave\release_rtdist_win32\build\panda3d\built_cmu\bin\panda3d.py", line 209, in __getattr__
  File "C:\buildslave\release_rtdist_win32\build\panda3d\built_cmu\bin\panda3d.py", line 129, in libimport
ImportError: DLL loader cannot find _rocketcore.

The game runs with librocket if I start it from the python script.

[carharttguy]

Installed latest devel build from today, and guess what? Librocket works like a charm!

Thanks for all your work rdb

BTW: If I can ask, you work a lot on panda3D, do you work for the University or Disney? Because, Panda3D seems to be _very_ active for a open-source project?

cheers
Mathias

[rdb]

@EdBighead: you need to specify "-r rocket" on the packp3d command-line.

@carhartguy: the latter.

[powerpup118]

Can anyone here get return/enter ('\n') working in multi-line textarea's? I've read a couple of places on the libRocket forums saying it works, just you need to send the '\n' character through to libRocket when the enter key is pressed, using Rocket::Core::Context::ProcessTextInput() function, and it'll start a new line

So there must be one of three problems:

1) My application has done something wrong, and that's why it's broken, I figure unlikely.

2) Panda's rocketInputHandler class, never calls ProcessTextInput() for the '\n' character upon enter/return, I dunno the code well enough to tell

3) Panda's SDK is built with an older version of libRocket possibly and (perhaps?) this new functionality is only in newer github versions of libRocket?


I guess I'd just like to know if anyone else has gotten it to work, or if anyone can investigate a little bit if you know more than me ;D

EDIT: Also on a side note, how can one clean up a rocketRegion? is a call to rocketRegion.setActive(False) good enough? after that as long as the garbage collector gets it (or I explicitly call del on the rocketRegion?)

Thank you,
~powerpup118

[rdb]

Sorry about that. I've checked in a fix. Will be in 1.8.1.

You have to call window.removeDisplayRegion(rocketRegion) to remove Panda's internal reference to your region, allowing it to be destructed when you clear up your references.

Note that calling "del variable" is functionally little different than doing "variable = None". "del" doesn't actually destroy the object like "delete" does in C++; it simply removes the reference to the object.

[powerpup118]

Great news! You've completely cleared up my questions. And no worries, I can certainly wait for 1.8.1 no problem.

Good to know about the "del variable" vs "variable = None", thank you for the heads up!

Thank you again,
~powerpup118

[powerpup118]

I may have found another bug, or maybe it's an issue with my ppackage system (in place of packp3d, i'm using ppackage)

Here goes:

I have a simple python file, 'main.py' which has these lines:

Code: Select all

import panda3d.rocket
print '1'

from panda3d.rocket import *
print '2'


The code works on 1, 'import panda3d.rocket', and fails on 2, 'from panda3d.rocket import *'

I believe the panda3d.rocket pdef package is missing libboost_python.so.1.48.0 based of the errors, here's the output the program above would spit out (with some other useless parts of my own code output removed):

Code: Select all

1
Traceback (most recent call last):
  File "/home/buildbot/slave/release_rtdist_linux_i386/build/panda3d/built_cmu/direct/showbase/Messenger.py", line 424, in __taskChainDispatch
  File "/home/buildbot/slave/release_rtdist_linux_i386/build/panda3d/built_cmu/direct/showbase/Messenger.py", line 482, in __dispatch
  File "/home/buildbot/slave/release_rtdist_linux_i386/build/panda3d/built_cmu/direct/p3d/PackageInstaller.py", line 427, in __packageDone
  File "/home/buildbot/slave/release_rtdist_linux_i386/build/panda3d/built_cmu/direct/p3d/PackageInstaller.py", line 481, in __callDownloadFinished
  File "wmLauncher/wmLauncher.py", line 103, in downloadFinished
  File "wmLauncher/wmLauncher.py", line 89, in loadGame
  File "VFSImporter", line 153, in load_module
  File "main.py", line 4, in <module>
  File "/home/buildbot/slave/release_rtdist_linux_i386/build/panda3d/built_cmu/lib/panda3d.py", line 200, in __getattr__
  File "/home/buildbot/slave/release_rtdist_linux_i386/build/panda3d/built_cmu/lib/panda3d.py", line 112, in libimport
  File "VFSImporter", line 127, in load_module
  File "VFSImporter", line 228, in _import_extension_module
ImportError: libboost_python.so.1.48.0: cannot open shared object file: No such file or directory
:task(error): Exception occurred in PythonTask Messenger-default
Traceback (most recent call last):
  File "/home/buildbot/slave/release_rtdist_linux_i386/build/panda3d/built_cmu/direct/p3d/AppRunner.py", line 638, in run
  File "/home/buildbot/slave/release_rtdist_linux_i386/build/panda3d/built_cmu/direct/task/Task.py", line 502, in run
  File "/home/buildbot/slave/release_rtdist_linux_i386/build/panda3d/built_cmu/direct/task/Task.py", line 460, in step
  File "/home/buildbot/slave/release_rtdist_linux_i386/build/panda3d/built_cmu/direct/showbase/Messenger.py", line 424, in __taskChainDispatch
  File "/home/buildbot/slave/release_rtdist_linux_i386/build/panda3d/built_cmu/direct/showbase/Messenger.py", line 482, in __dispatch
  File "/home/buildbot/slave/release_rtdist_linux_i386/build/panda3d/built_cmu/direct/p3d/PackageInstaller.py", line 427, in __packageDone
  File "/home/buildbot/slave/release_rtdist_linux_i386/build/panda3d/built_cmu/direct/p3d/PackageInstaller.py", line 481, in __callDownloadFinished
  File "wmLauncher/wmLauncher.py", line 103, in downloadFinished
  File "wmLauncher/wmLauncher.py", line 89, in loadGame
  File "VFSImporter", line 153, in load_module
  File "main.py", line 4, in <module>
  File "/home/buildbot/slave/release_rtdist_linux_i386/build/panda3d/built_cmu/lib/panda3d.py", line 200, in __getattr__
  File "/home/buildbot/slave/release_rtdist_linux_i386/build/panda3d/built_cmu/lib/panda3d.py", line 112, in libimport
  File "VFSImporter", line 127, in load_module
  File "VFSImporter", line 228, in _import_extension_module
ImportError: libboost_python.so.1.48.0: cannot open shared object file: No such file or directory
:TaskManager: TaskManager.destroy()
:display: Closing glxGraphicsWindow
Successfully joined thread: 0
Failure on startup.


It could just be a problem on my end, again, so I dunno for sure yet, I just thought I'd ask if perhaps there is an issue with the libRocket pdef package, or, what you think it might be, etc

Thank you,
~powerpup118

[powerpup118]

I must apologize for both, my long posts, and if I've sent anyone on a wild goose chase.

I have discovered more accurately when the situation happens, and have two new test cases for you..

1) When rocket is required as a package through packp3d, there is no issue and everything works as desired, see code below

Code: Select all

import direct.directbase.DirectStart
from panda3d.rocket import *

run()


Compile that into a p3d file using:

Code: Select all

packp3d -o myapp.p3d -r rocket


No issue occurs.


2) When rocket is installed at-runtime (which I seem to be able to do with other packages, bullet, my own packages, etc) there is the "ImportError: libboost_python.so.1.48.0: cannot open shared object file: No such file or directory" error, which may be due to my own lacking knowledge of the package system. See the below:

Code: Select all

import direct.directbase.DirectStart
from direct.p3d.DWBPackageInstaller import DWBPackageInstaller

def onFinish(worked):
   print 'onFinish(%s)' % worked
   from panda3d.rocket import LoadFontFace

pi = DWBPackageInstaller(base.appRunner, parent = base.a2dTopRight, scale = 0.5, pos = (-0.6, 0, -0.1), finished = onFinish)

pi.addPackage('rocket', 'cmu_1.8')
pi.donePackages()

run()


As you can see, the above code will install the rocket package at runtime, and once done, attempt to load the rocket module (by simply importing LoadFontFace from panda3d.rocket module)

Compile the above into a p3d simply with:

Code: Select all

packp3d -o myapp.p3d


So it appears my new question is, why can other panda3d C modules/packages, such as Bullet, be installed at runtime, and the rocket C module/package is the opposite, with the missing libboost_python... error?

I apologize for the incorrect information before,
Thank you,
~powerpup118

[rdb]

Bah. Somehow it must be grabbing the librocket libraries on your system instead of the librocket libraries in the rtdist.

The only way I see to fix this is for me to rename the libRocket libraries into something else, and then linking to those.

I'm busy at the moment with other tasks, so please file a bug report.

[powerpup118]

Okay, I'll go ahead and file a bug report about this.

Since it's grabbing the libRocket libraries from my own system, in theory, the problem should be non existent for anyone who has never installed libRocket, (directly as a system install, I mean), is that correct?

I'll go ahead and test this theory as well, and if it's different from what I think, I'll let you know on the bug tracker.

Appreciate your time,
~powerpup118

[rdb]

You can easily test it by simply renaming the libRocket libraries on your system, or moving them to another directory.

[DangerOnTheRanger]

When I run the following program:

Code: Select all

from direct.showbase.ShowBase import ShowBase
from panda3d.rocket import *

class MyApp(ShowBase):

    def __init__(self):
        ShowBase.__init__(self)

app = MyApp()
app.run()

I get this exception:

Code: Select all

Traceback (most recent call last):
  File "<stdin>", line 2, in <module>
  File "/usr/share/panda3d/panda3d.py", line 200, in __getattr__
    for obj in dir(self.__manager__.libimport(lib)):
  File "/usr/share/panda3d/panda3d.py", line 129, in libimport
    raise ImportError, message
ImportError: DLL loader cannot find _rocketcore.


This ImportError occurs with both 1.8 and the latest Lucid Lynx buildbot. Like carthartguy, I too have no _rocketcore.so file in /usr/lib/panda3d. Plus this problem occurs both with and without librocket being separately installed on my system. Anyone have any suggestions?

[rdb]

Sorry, I must have forgotten to build libRocket on lucid lynx.

[DangerOnTheRanger]

So can I expect librocket to be in the Lucid Lynx build by tommorrow?

[rdb]

The current lucid builds (as of this very moment) should contain libRocket support.

[DangerOnTheRanger]

Thanks, rdb - librocket works with the Lucid Lynx build now

[powerpup118]

Hi again all,

I have a sort of suggestion/feature request I suppose, it's however specifically relate to rocket, sso instead of posting it under Feature Request I thought I'd post it here.

libRocket allows C++ users to inherit from Rocket::Core::Element, and then define onUpdate/onRender calls for that specified element, and then it will be properly drawn in order, with respect to other elements.

For an example, a minimap, or some sort of 3d character drawn "onto" an libRocket window, using your own custom element tag.

See this libRocket thread on their forums here

Also see ElementGame.cpp in libRocket/Samples/pyinvaders/rc/ElementGame.cpp

This is an example of such usage, and I can see this being indeed very useful.

I was thinking of some sort of "rocketElementNode" or something of the sort, which could have a tag, and inherit from Rocket::Core::Element, and then any panda3d geom's etc under that node would be drawn in the onRender/onUpdate callback or however that works

This is just an suggestion, and I'm more than aware that this requires C++ work that perhaps nobody is willing or knowledgeable enough to do.

Just an idea,
~powerpup118

[rdb]

Intriguing. I'll look into it.

[rdb]

It wouldn't work. Interrogate doesn't support overriding virtual methods from C++. Boost::python does, however, so nothing is stopping you from inheriting directly from Rocket::Core::Element.

[wraithix]

I'm having a bit of trouble changing properties at runtime - and I'm kind of assuming I just don't understand the libRocket API well enough - but whenever I try to change an object property once run() is called it either crashes my application or does nothing.

What I'm trying to do is create a text field I can update as needed, but I get the following error:

Code: Select all

Boost.Python.ArgumentError: Python argument types in
    None.None(Element, unicode)
did not match C++ signature:
    None(class Rocket::Core::Element {lvalue}, class Rocket::Core::StringBase<char>)


I've tried using a <div> and a <p>. From what I gather a div is translated into an Element, and a <p> is translated into an ElementText. Respectively, I've tried assigning document.getElementById('id').inner_rml and document.getElementById('id').text directly. The <div> property crashes with the above error, and the <p> method doesn't seem to do anything. I've tried calling context.Update() after the <p> property, but that doesn't help.

If I change these properties before Panda's run() method is called I have no issues, but once run() is called the <div> method crashes and the <p> method doesn't do anything. I'm assuming I'm just doing this wrong. What's the right way to do this is? Any help would be much appreciated.

[wraithix]

I've figured it out. When assigning a value directly it is a string type, but when assigning as a variable it was a unicode type. By casting the value with str() before assigning it worked.

[plaristote]

Hi there !

It's great news that Rocket is getting integrated in Panda3D ! And I'd like to try it out : I compiled it alright and can use it, but I just don't know how.

The RocketNode object from the first post doesn't exist anymore (does it ?).
I have a RocketRegion, with and a successfully loaded ElementDocument, but I don't know how to display it into Panda.
I didn't find anything in the documentation to create a PandaNode.

Is there any way to see a sample of code in C++ ?

[rdb]

http://rdb.name/rocket-sample.zip

[plaristote]

Alright thank you ! I managed to write it in C++ and it works wonders !

But there's a problem I know how to solve with PGButtons but not with the libRockets !

If you want to ignore the clicks intercepted by a PGButton, you would do this :

Code: Select all

button->get_region()->set_suppress_flags(MouseWatcherRegion::SF_mouse_button);

But I can't find a way to do this with RocketRegions. Is there something to do that ?

[rdb]

At the moment, there isn't. I could look into adding it, though. Could you file a big report with that information at launchpad? Thanks!

[plaristote]

Done ! Here's the bug report : https://bugs.launchpad.net/panda3d/+bug/1001931

[texugo]

hello fellows

I´m studying libRocket´s tutorial Dragging : http://librocket.com/wiki/documentation/tutorials/Dragging

Everything goes right but when i set icon drag property to clone in tutorial.rss the app run, but when i´m about to drag any icon my app simply crash

I´m on windows 7 and panda3d 1.8. Any ideas?
Thanx