[Blindmath] First attempt at an SWT/SVG based drawing program

Tue Aug 30 05:59:52 UTC 2011

Hi Amanda,

I'm a little concerned about part of your description having to do with the
program closing.

The program should only close when you have first selected the item in the
combo box that reads "Stop program" and then you press Enter. I don't think
that pressing space in the combo box should do anything.

However, pressing either space or the Enter key on a button should cause the
action identified by that button to occur.

After you "Start a new drawing" by pressing Return on that item in the combo
box, filling out the form, and pushing the button on that form, you should
be able to select and draw as many different shapes as you need before
writing the output file and closing the program.

After drawing all of the shapes that you need, you should press Enter on "Write
drawing file" in the combo box.  This will open a dialog that you can use to
specify a file name. After specifying the file name, press space or Return
on the button that reads "Push to write the file" to actually cause the
output SVG file to be written. Unless you specify a path along with the file
name, the SVG file should be written into the same folder as the one
containing the executable jar file.

Finally, after starting a new drawing, adding shapes to the drawing, and
writing the SVG document into an output SVG file, you should press Enter on
the item in the combo box that reads "Stop program." That should close the
program.

Is that how is it working, or is the program closing prematurely when you
press the button to "cause the shape to be drawn?"

Thanks,
Dick Baldwin

On Mon, Aug 29, 2011 at 11:36 PM, Amanda Lacy <lacy925 at gmail.com> wrote:

> Your including the dll file seems to have solved that problem. When I run
> the program, everything seems to work fine. I select a shape and tab my way
> through the form until I come to the button which will cause that shape to
> be drawn. I press enter or space, and the program closes.
>
>
> Amanda
> ----- Original Message ----- From: "Richard Baldwin" <
> baldwin at dickbaldwin.com>
> To: "Blind Math list for those interested in mathematics" <
> blindmath at nfbnet.org>
> Sent: Monday, August 29, 2011 11:15 PM
>
> Subject: Re: [Blindmath] First attempt at an SWT/SVG based drawing program
>
>
>  Amanda: I just uploaded a new version of the jar file and included the dll
>> files. Maybe I was supposed to include them but it didn't matter on my
>> machine because they had already been installed. Please download this new
>> version and try to execute it with the following command on the command
>> line
>> in the folder that contains SVGDraw01.jar.
>>
>> java -jar SVGDraw01.jar
>>
>> Ken: I have been led to believe that when the GUI is developed using the
>> SWT
>> instead of Swing, the java access bridge is not required, and that is one
>> of
>> the main advantages of using the SWT instead of Swing. However, I do have
>> the access bridge installed on my computer so I can't be certain that it
>> is
>> not required.
>>
>> Dick Baldwin
>>
>> On Mon, Aug 29, 2011 at 10:57 PM, Ken Perry <kperry at blinksoft.com> wrote:
>>
>>  Do you have to have access bridge installed to use this with Jaws?
>>>
>>> ken
>>>
>>> -----Original Message-----
>>> From: blindmath-bounces at nfbnet.org [mailto:blindmath-bounces@**
>>> nfbnet.org <blindmath-bounces at nfbnet.org>]
>>> On
>>> Behalf Of Richard Baldwin
>>> Sent: Monday, August 29, 2011 11:20 PM
>>> To: Blind Math list for those interested in mathematics
>>> Subject: Re: [Blindmath] First attempt at an SWT/SVG based drawing
>>> program
>>>
>>> It shouldn't matter which folder you place it in. I haven't seen that
>>> error
>>> on my computer at home or on the computer in my office at the college but
>>> that may be because I have been doing SWT development on both of those
>>> computers and the dll file that you mentioned may have been installed on
>>> my
>>> machines at some earlier time. I will try it on one of the lab computers
>>> tomorrow to see if I have any problems there. If so, I will see what is
>>> needed to correct the problem and upload a corrected jar file.
>>>
>>> As I mentioned in my earlier message, this is my first encounter with
>>> SWT.
>>>
>>> Has anyone else seen this problem?
>>>
>>> Thanks,
>>> Dick Baldwin
>>>
>>> On Mon, Aug 29, 2011 at 9:36 PM, Amanda Lacy <lacy925 at gmail.com> wrote:
>>>
>>> > Is there a specific folder in which we should place this file? I get an
>>> > unsatisfied link error that says something like cannot load SWTWin.dll.
>>> >
>>> > Amanda
>>> > ----- Original Message ----- From: "Richard Baldwin" <
>>> > baldwin at dickbaldwin.com>
>>> > To: "BlindMath Mailing List" <blindmath at nfbnet.org>
>>> > Sent: Monday, August 29, 2011 9:02 PM
>>> > Subject: [Blindmath] First attempt at an SWT/SVG based drawing program
>>> >
>>> >
>>> >  For those who may be interested, I have posted my first attempt at
>>> putting
>>> >> an SWT GUI front end on my SVG graphics library and have posted the
>>> >> resulting program in a file named SVGDraw01.jar at the following URL:
>>> >>
>>> >>
>>> http://www.austincc.edu/****baldwin/SWT-SVG/SVGDraw01.jar<http://www.austincc.edu/**baldwin/SWT-SVG/SVGDraw01.jar>
>>> <
>>> http://www.austincc.
>>> edu/baldwin/SWT-SVG/SVGDraw01.**jar>
>>> >>
>>> >> I would appreciate it if some of you would download the program, try
>>> >> it,
>>> >> and
>>> >> provide feedback in several different areas. You will need the Java
>>> >> virtual
>>> >> machine installed on your computer to run the program. On Windows, you
>>> can
>>> >> run the program either by double-clicking on the jar file, or by >>
>>> opening
>>> a
>>> >> command prompt in the folder containing the jar file and entering the
>>> >> following command at the command prompt:
>>> >>
>>> >> java -jar SVGDraw01.jar
>>> >>
>>> >> When the program starts running, you should find yourself in an SWT
>>> Combo
>>> >> object with an item labeled "User Instructions" highlighted. Pressing
>>> the
>>> >> Enter key at this point will take you to the beginning of a page
>>> >> containing
>>> >> user instructions. A screen reader should tell you to press shift-tab
>>> >> to
>>> >> return to the combo box or to press the tab key to continue.
>>> >>
>>> >> Pressing the tab key will cause the screen reader to begin reading the
>>> >> instructions. At the end of the instructions, the screen reader should
>>> >> tell
>>> >> you to "Press tab to return to the combo box." (Of course, you can >>
>>> press
>>> >> tab
>>> >> at any time. You don't need to wait until the screen reader finishes
>>> >> reading
>>> >> the instructions.)
>>> >>
>>> >> You can navigate up and down the list in the combo box using the arrow
>>> >> keys
>>> >> and act on an item by pressing the Enter key when that item is >>
>>> selected.
>>> >> The
>>> >> combo box currently contains the following items:
>>> >>
>>> >> User instructions (which is what you should do first)
>>> >> Start a new drawing (which is what you should do next)
>>> >> Draw a line
>>> >> Draw a rectangle
>>> >> Draw a circle
>>> >> Draw an ellipse
>>> >> Draw a polyline
>>> >> Draw a polygon
>>> >> Write drawing file (which is what you should do next to last)
>>> >> Stop program (which is what you should do last)
>>> >>
>>> >> When you press the Enter key on the item labeled "Start a new >>
>>> drawing,"
>>> an
>>> >> empty SVG page of a specified size with optional title and description
>>> >> attributes will be created in memory.
>>> >>
>>> >> When you press the Enter key on the item labeled "Write drawing file",
>>> >> that
>>> >> SVG page will be written to an output SVG file with a name of your
>>> >> choosing
>>> >> and an extension of .svg.
>>> >>
>>> >> Between starting a new drawing and writing the drawing file, you can
>>> >> add
>>> >> elements for any number of any of the six shapes (which are the SVG
>>> basic
>>> >> shapes) in any order to the SVG page.
>>> >>
>>> >> When you press the Enter key on a shape item, you will land on a form
>>> that
>>> >> allows you to enter the most commonly used attributes for that shape.
>>> Fill
>>> >> in the blanks, check the check boxes (if any), and finally push the
>>> button
>>> >> labeled "Push to draw ---" to add the shape element to the SVG page.
>>> >> You
>>> >> can
>>> >> navigate up and down the the form with the tab key and shift-tab.
>>> >>
>>> >> I would appreciate receiving feedback in at least the following areas.
>>> >> Feedback in other areas not listed below will be appreciated also.
>>> >>
>>> >> 1. Will the program be accessible to a blind student? What could be >>
>>> done
>>> >> to
>>> >> improve accessibility?
>>> >>
>>> >> 2. Will the navigation structure of the program be functionally useful
>>> to
>>> >> a
>>> >> blind student? What could be done to improve the navigational
>>> >> functionality
>>> >> and make the program easier to use?
>>> >>
>>> >> 3. Will the "fill-in-the-blanks" concept for creating technical >>
>>> diagrams
>>> >> and
>>> >> drawings, such as vector diagrams and free-body diagrams, be useful to
>>> >> a
>>> >> blind student? If so, which of the many additional capabilities of >>
>>> SVG,
>>> >> such
>>> >> as arcs, paths, etc., would be appropriate as an upgrade to the >>
>>> program.
>>> >> (I'm already planning on adding the ability to create text elements. I
>>> >> just
>>> >> haven't resolved all the questions regarding fonts yet.)
>>> >>
>>> >> 4. To what extent is the output SVG file compatible with graphics
>>> >> embossers
>>> >> that can work with SVG files as input? What could be done to improve
>>> that
>>> >> compatibility?
>>> >>
>>> >> Thank you,
>>> >>
>>> >> Dick Baldwin
>>> >>
>>> >> --
>>> >> Richard G. Baldwin (Dick Baldwin)
>>> >> Home of Baldwin's on-line Java Tutorials
>>> >> http://www.DickBaldwin.com
>>> >>
>>> >> Professor of Computer Information Technology
>>> >> Austin Community College
>>> >> (512) 223-4758
>>> >> mailto:Baldwin at DickBaldwin.com
>>> >> http://www.austincc.edu/****baldwin/<http://www.austincc.edu/**baldwin/><
>>> http://www.austincc.edu/**baldwin/ <http://www.austincc.edu/baldwin/>>
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>>> --
>>> Richard G. Baldwin (Dick Baldwin)
>>> Home of Baldwin's on-line Java Tutorials
>>> http://www.DickBaldwin.com
>>>
>>> Professor of Computer Information Technology
>>> Austin Community College
>>> (512) 223-4758
>>> mailto:Baldwin at DickBaldwin.com
>>> http://www.austincc.edu/**baldwin/ <http://www.austincc.edu/baldwin/>
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>>
>>
>> --
>> Richard G. Baldwin (Dick Baldwin)
>> Home of Baldwin's on-line Java Tutorials
>> http://www.DickBaldwin.com
>>
>> Professor of Computer Information Technology
>> Austin Community College
>> (512) 223-4758
>> mailto:Baldwin at DickBaldwin.com
>> http://www.austincc.edu/**baldwin/ <http://www.austincc.edu/baldwin/>
>> ______________________________**_________________
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>
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-- 
Richard G. Baldwin (Dick Baldwin)
Home of Baldwin's on-line Java Tutorials
http://www.DickBaldwin.com

Professor of Computer Information Technology
Austin Community College
(512) 223-4758
mailto:Baldwin at DickBaldwin.com
http://www.austincc.edu/baldwin/