User:Mike

Name: Tengda Han (Mike)

University: ANU

Email: u5612799@anu.edu.au

Summary: I am doing GSOC2016 for ASCEND, and I will do something on Canvas function.

• Browse my code here: mike:
• Check out my code using svn co http://svn.ascend4.org/branches/mike

Discussion notes of 12 May 2016

To get the canvas GUI running in the trunk code, I used:

john@thunder:~/ascend/trunk2$ ./pygtk/canvas/canvas.py

May 12 to May 22

• Set development environment and play with canvas.

• Find a problem about module 'ascpy' in my branch, which cannot be found in canvas.py.

• But when I run canvas.py of main trunk, module 'ascpy' can be found, but another error is called:libascend.so.1: cannot open shared object file: No such file or directory

Discussion notes of 23 May 2016

• cannot find module 'ascpy' is because I need to compile by

scons -j4

• set paths properly before run canvas.py:

export LD_LIBRARY_PATH=~/Desktop/ascend_mike/mike/:$LD_LIBRARY_PATH
export PYTHONPATH=~/Desktop/ascend_mike/mike/models/johnpye/fprops/python:$PYTHONPATH

• find a bug of Adrian's branch, which is, when run the solver, ascend kills the background terminal. Trying different ubuntu system may work.

May 23 to May 29

• Tested Adrian's branch on ubuntu 16.04 LTS. Previous bug doesn't exist (ascend kills the terminal)

• Try to understand Gaphas and libavoid.

• Link 'libavoid' on ASCEND wiki has 404 error.

• When 'scons' ASCEND in Ubuntu16.04, SWIG error comes. sulution here

Discussion notes of 30 May 2016

• When try to run canvas.py, should set PYTHONPATH to

ascend_trunk/trunk/model/johnpye/fprops/python

• For Adrian's version

canvas.py doesn't work because of

Error: sys.path must be a list of directory names

Reason: installed python-gaphas uses gtk2. But we require gtk3 branch of gaphas, Solution:

cd ~/desired directory
git clone https://github.com/amolenaar/gaphas
git checkout gtk3
git pull
sudo python setup.py install

However, after canvas.py pops up, TypeError: Couldn't find conversion for foreign struct 'cairo.Context' occurs when click on blank canvas

May 30 to June 5

• Solved TypeError: Couldn't find conversion for foreign struct 'cairo.Context' by

sudo apt-get python-gi-cairo

This package is a Python Cairo bindings for the GObject library

• If problems occur when installing gaphas by

sudo apt-get install python-gaphas

Check the universe repository before installation may help

• Undo button works (finishing the work of Adrian), redo haven't been implemented yet.

Discussion notes of June 6 2016

• Buttons now have labels. By adding tb.set_style(Gtk.ToolbarStyle.BOTH) after tb = Gtk.Toolbar()

• Delete unnecessary .svg image files in ascend/mike/pygtk/canvas/ only leave defaultblock.svg

• Block icons should be generated by strings, instead of load image. Example format here

• Currently svn version is updated to 3110

• I can improve blocks, firstly to make sure they can be properly solved in canvas.