CPSC 231: Mini Assignment 4B

Due Wednesday Nov 23  at 4 PM

New Concepts to be applied for the assignment

• Learning how to get a program to react to GUI events (button press)
• Drawing simple graphics and configuring graphical properties during program run-time
• Both parts must be implemented using the TkInter library module of Python

Part I: Creating a simple graphical user interface

Modify the existing code in the program 'button_events.py' program to that a text message appears onscreen when the user presses the button. (You can use the print() function to display the message).

Part II: Drawing simple graphics

Modify the starting code in the program 'graphics.py' program. In function drawShape(), the program draws a rectangle bounded on the top LHS point (100,200) and the bottom RHS point(300,300) coloured yellow. Use the information from the getBounds() function to get the coordinates for the top LHS point as well as the size of the rectangle. The coordinates of the bottom RHS point will be equal to the (x,y) coordinates of the top LHS point plus the size. (Your solution doesn't have to error check the bounds make sense although you can do so for extra practice). Example input: Top LHS Point(100,200) size = 200 yields bottom RHS point (100+200,200+200) or (300,400). Your modifications will allow the position and bounds of the rectangle to be determined at run time. Also modify the program so the fill color won't be fixed but instead be based on the return value of the getFillColor() function. (Again your program doesn't have to check that the color entered is one of the allowable fill colors although you can do it for extra practice):

[TA Marking spreadsheet]

Points to keep in mind:

1. Due time: All assignments are due at 4 PM on the due dates listed on the course web page.  Late assignments or components of assignments will not be accepted for marking without approval for an extension beforehand. What you have submitted in D2L as of the due date is what will be marked.
2. Extensions may be granted for reasonable cases by the course instructor with the receipt of the appropriate documentation (e.g., a doctor's note). Typical examples of reasonable cases for an extension include: illness or a death in the family. Cases where extensions will not be granted include situations that are typical of student life: having multiple due dates, work commitments etc. Tutorial instructors (TA's) will not be able to provide extension on their own and must receive permission from the course instructor first. (Note: Forgetting to hand your assignment or a component of your assignment in does not constitute a sufficient reason for handing your assignment late).
3. Method of submission: You are to submit your assignment using D2L [help link]. Make sure that you [check the contents of your submitted files] (e.g., is the file okay or was it corrupted, is it the correct version etc.). It's your responsibility to do this! (Make sure that your submit your assignment with enough time before it comes due for you to do a check).
4. Identifying information: All assignments should include contact information (full name and student ID number) at the very top of your program in the class where the 'main()' function/method resides.
5. Collaboration: Assignments must reflect individual work, group work is not allowed in this class nor can you copy the work of others.  For more detailed information as to what constitutes academic misconduct (i.e., cheating) for this course please read the following [link].
6. Execution: programs must run on the computer science network running Python 3.x. If you write you code in the lab and work remotely using a remote login program such as Putty or SSH. If you choose to install Python on your own computer then it is your responsibility to ensure that your program will run properly here. It's not recommended that you use an IDE for writing your programs but if you use one then make sure that you submit your program in the form of text ".py" file or files
7. Use of pre-created Python libraries: unless otherwise told you are to write the code yourself and not use any pre-created functions from the Python libraries. For this assignment the usual acceptable functions include: print(), input(), sys.stdout.write(), str(), float(), int() as well as the capabilities of the TkInter library module and if you wish assert().

D2L configuration:

• You can and should submit many times before the due date. D2L will simply overwrite previous submissions with newer ones.
• Needed for this assignment if you wish to submit separate programs for both parts: Only one file can be submitted per assignment so you should combine multiple files into one file using a program such as zip.

Marking:

• Assignments will be marked by your tutorial instructor (the "Teaching Assistant" or "TA"). When you have questions about marking this is the first person that you should be directing your questions towards. If you still have question after you have talked to your TA then you can talk to your course (lecture) instructor.

Starting code:

The starting code can be found in UNIX under:

/home/231/assignments/mini_assignment4b/code

You need to use this starting code in your own solution, just make the necessary modifications in order to fulfill the above requirements.