pythoncard-users — PythonCard Users and Developers

[Pythoncard-users] Minimizing an application?

[<MWP...@cs...>]

 The program I am writing has a screen capture feature and I need to know how 
to minimize the app when this is chosen and restore the screen when the 
capture has been completed....I have tried to search through the mailing lists to 
see if this question has been asked but Im drawing a blank....any help would be 
greatly appreciated.

Re: [Pythoncard-users] Trivial bug report - missing tooltip in tree control

[XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX]

On 15/12/05 12:16, Alex Tweedly wrote:

> Oh - you mean you put actual data in it :-)

:-) A tree-less tree control...

> I didn't get that far - just created a tree control and checked that a 
> tooltip then worked.
> 
>> I'll try upgrading like you suggest.
> 
> 
> Won't help.     It's not a bug, it's a feature :-)
> 
> At least on Windows, you can set the tooltip individually for each item 
> (from the WX docs it does look as though this is Windows only, but I'm 
> not in a position to try it on other systems just now).

Wha...different tooltips per item!

Actually...now that I think about it...I can't think of any use for one 
tooltip per item. But thanks for solving the mystery. I just need to 
follow your example and apply the same tooltip to all items.

I can't check whether the same applies to OSX either, since my iBook's 
motherboard recently kicked the bucket :-(

-- 
XXXXXXXXXXX

Re: [Pythoncard-users] Trivial bug report - missing tooltip in tree control

[Alex T. <al...@tw...>]

XXXXXXXXXXX wrote:

> Thanks for checking. I've got the same setup here except for the 
> PythonCard version.
>
> But I was a bit hasty in my analysis...it appears that the tool tip 
> stops working as soon as I let the pointer cross the actual tree 
> element within the control. If I keep the pointer within the blank 
> area of the control then I can move it onto other controls and back 
> and the tip reappears. Touch the tree...tip no more.
>
Oh - you mean you put actual data in it :-)
I didn't get that far - just created a tree control and checked that a 
tooltip then worked.

> I'll try upgrading like you suggest.

Won't help.     It's not a bug, it's a feature :-)

At least on Windows, you can set the tooltip individually for each item 
(from the WX docs it does look as though this is Windows only, but I'm 
not in a position to try it on other systems just now).

This isn't exposed through PythonCard, so you need to use the wx event 
system directly. I changed the minimalTree sample as below (changed line 
and section marked in comments). The "OnItemExpanded" isn't needed - but 
it was the one I used for first experiments.  For this example, I just 
always set the same tooltip, but you could customize

> #!/usr/bin/python
>
> """
> __version__ = "$Revision: 1.6 $"
> __date__ = "$Date: 2004/05/05 16:53:27 $"
> """
>
> from PythonCard import model
> import wx    -- ADDED THIS LINE
>
> # events
> # itemActivated, itemExpanding, itemExpanded,
> # selectionChanging, selectionChanged
>
> class Minimal(model.Background):
>
>     def on_initialize(self, event):
>         tree = self.components.tree
>         root = tree.addRoot("1")
>         tree.setItemHasChildren(root, 1)
>         tree.selectItem(root)
>         -- START OF NEW SECTION
>         self.Bind(wx.EVT_TREE_ITEM_EXPANDED, self.OnItemExpanded, 
> self.components.tree)
>         self.Bind(wx.EVT_TREE_ITEM_GETTOOLTIP, self.OnItemSetTooltip, 
> self.components.tree)
>
>     def OnItemExpanded(self, event):
>         print "expanded", event.GetItem()
>         pass
>         
>     def OnItemSetTooltip(self, event):
>         print "gettooltip", event.GetItem()
>         event.SetToolTip("this is the new tooltip for all items")
>         pass
>     -- END OF NEW SECTION
>         
>     def on_tree_itemExpanding(self, event):
>         tree = self.components.tree
>         item=event.item
>         # This event can happen twice in the self.Expand call
>         if tree.isExpanded(item):
>             return
>         obj = int(tree.getItemText(item))
>         if tree.getChildrenCount(item, 0) == 0:
>             lst = [obj * 2, (obj *2) + 1]
>             for o in lst:
>                 new_item = tree.appendItem(item, str(o))
>                 tree.setItemHasChildren(new_item, 1)
>         event.skip()
>
>
> if __name__ == '__main__':
>     app = model.Application(Minimal)
>     app.MainLoop()


-- 
Alex Tweedly       http://www.tweedly.net



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Re: [Pythoncard-users] Re: PythonCard, Eclipse and Pydev

[Alex T. <al...@tw...>]

Don Taylor wrote:

> Alex Tweedly wrote:
>
>>
>> I use the PythonCard editor about 90% of the time - does have some 
>> advantages for having built-in knowledge of the controls and events 
>> associated with them, plus easy access to the runtime options (debug, 
>> log, message watcher, etc.)
>

> I am curious about the PythonCard editor having "built-in knowledge of 
> the controls and events associated with them".  A quick look at the 
> code editor did not reveal this to me - what should I be looking for?

It's not in the "normal" codeEditor, it's in the "advanced" version, 
which can be found, rather confusingly, in
  PythonCard/tools/oneEditor/tabcodeEditor.py

Has two features not in the basic editor
 - uses tabbed notebook to allow multiple files to be edited
 - has a drop-down for all controls in the current file
       Selecting one of them makes another drop-down appear.
       This shows all events for that control type, with a "+" marking 
those for which a handler exists.

Selecting one of those will position the cursor on the first line of the 
handler.
Selecting one for which no handler exists yet will insert a "blank" handler
               (without ensuring your on a blank line - use with care :-)

This "advanced" editor is "experimental" - hasn't been as widely used or 
tested as the basic one, so use with care. Having said that, I've used 
it almost exclusively for many months and had only one (repeated) glitch 
(something to do with opening new windows while the shell window is open 
- but couldn't reproduce it).

Oh - and it doesn't yet do Ctrl-F4 to close a tab - you need to do 
Ctrl-W. Minor, but annoying.

-- 
Alex Tweedly       http://www.tweedly.net



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[Pythoncard-users] Re: PythonCard, Eclipse and Pydev

[Don T. <nos...@gm...>]

Alex Tweedly wrote:

> 
> I use the PythonCard editor about 90% of the time - does have some 
> advantages for having built-in knowledge of the controls and events 
> associated with them, plus easy access to the runtime options (debug, 
> log, message watcher, etc.)
> 

I been able to use Eclipse/Pydev on "Minimal" and the debugger seems to 
work at least in a very simple set up.  Eclipse/Pydev and the 
resourceEditor seem to play quite nicely togtether.  If the resource 
files has a different extention then I could register the resourceEditor 
as an external editor on Eclipse.

I am curious about the PythonCard editor having "built-in knowledge of 
the controls and events associated with them".  A quick look at the code 
editor did not reveal this to me - what should I be looking for?

I plan to experiment further with Eclipse/Pydev - PythonCard as it seems 
like a nice combination to me.

Thanks,

Don

Re: [Pythoncard-users] Trivial bug report - missing tooltip in tree control

[XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX]

On 13/12/05 19:55, Alex Tweedly wrote:
> Works ok for me :
> 
> PythonCard version: cvs latest
> wxPython version: 2.5.3.1
> Python version: 2.3.4 (#53, May 25 2004, 21:17:02) [MSC v.1200 32 bit 
> (Intel)]
> Platform: win32
> 
> You should be able to get from CVS using anonymous cvs, so shouldn't be 
> a lot of setup involved.

Thanks for checking. I've got the same setup here except for the 
PythonCard version.

But I was a bit hasty in my analysis...it appears that the tool tip 
stops working as soon as I let the pointer cross the actual tree element 
within the control. If I keep the pointer within the blank area of the 
control then I can move it onto other controls and back and the tip 
reappears. Touch the tree...tip no more.

I'll try upgrading like you suggest.
-- 
XXXXXXXXXXX

[Pythoncard-users] Re: PythonCard, Eclipse and Pydev

[Don T. <nos...@ca...>]

Don Taylor wrote:
> Total Newbie question - I have not yet tried PythonCard or wxWidgets but 
> I will 'real soon now'.
> 
> I presume that I can use Eclipse+Pydev for my Python editing while using 
> Pythoncard to edit my resources.  My question is can I run and debug a 
> PythonCard application from within Eclipse+Pydev?
> 
> I know that I can try this out myself (and I will) but has anyone else 
> tried this, or something like it, and what pitfalls I should look out for.
> 

I tried this last night and it seemed to work quite nicely - at least 
for the few minutes that I played with the 'minimal' app simultaneously 
in both Eclipse/Pydev and the resource editor.  I was able to run the 
Pydev debugger on minimal and it looked OK.  Eclipse recognized when a 
file it was editing changed on the file system and offered to reload it.

More play to day.

Don.

(FWIW.  The main reason I like Eclipse is because of its local history 
feature, I don't think that I want to live without it.  You can safely 
bash away at some source and save it multiple times knowing that you can 
always go back to a working version without having to remember what you 
need to do to undo the changes.  It is like having a local version 
control system that automatically commits your changes whenever you save 
  a file.  I don't know if other editors/IDEs have this feature.)

Re: [Pythoncard-users] PythonCard, Eclipse and Pydev

[Alex T. <al...@tw...>]

Don Taylor wrote:

> Total Newbie question - I have not yet tried PythonCard or wxWidgets 
> but I will 'real soon now'.
>
> I presume that I can use Eclipse+Pydev for my Python editing while 
> using Pythoncard to edit my resources.  My question is can I run and 
> debug a PythonCard application from within Eclipse+Pydev?
>
> I know that I can try this out myself (and I will) but has anyone else 
> tried this, or something like it, and what pitfalls I should look out 
> for.

Sorry, I haven't tried Eclipse.

I use the PythonCard editor about 90% of the time - does have some 
advantages for having built-in knowledge of the controls and events 
associated with them, plus easy access to the runtime options (debug, 
log, message watcher, etc.)

When I have complex changes to do, I use Emacs for the sake of its 
macros etc. (and out of long-term habit).

The other 5% of the time, when I want a serious debugger, I use Wing-IDE 
(Personal Edition).

-- 
Alex Tweedly       http://www.tweedly.net



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[Pythoncard-users] PythonCard, Eclipse and Pydev

[Don T. <nos...@ca...>]

Total Newbie question - I have not yet tried PythonCard or wxWidgets but 
I will 'real soon now'.

I presume that I can use Eclipse+Pydev for my Python editing while using 
Pythoncard to edit my resources.  My question is can I run and debug a 
PythonCard application from within Eclipse+Pydev?

I know that I can try this out myself (and I will) but has anyone else 
tried this, or something like it, and what pitfalls I should look out for.

Thanks,

Don.

Re: [Pythoncard-users] Trivial bug report - missing tooltip in tree control

[Alex T. <al...@tw...>]

XXXXXXXXXXX wrote:

> Could someone confirm that if you add a tool tip to the tree control 
> via the resource editor, it doesn't actually work? I've held the mouse 
> over the component every way possible but nothing seems to appear.
>
> If this has already been fixed in 0.8.2 then apologies - I haven't got 
> CVS access set up yet (really must get around to it...).
>
Works ok for me :

PythonCard version: cvs latest
wxPython version: 2.5.3.1
Python version: 2.3.4 (#53, May 25 2004, 21:17:02) [MSC v.1200 32 bit 
(Intel)]
Platform: win32

You should be able to get from CVS using anonymous cvs, so shouldn't be 
a lot of setup involved.

-- 
Alex Tweedly       http://www.tweedly.net



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[Pythoncard-users] Trivial bug report - missing tooltip in tree control

[XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX]

Could someone confirm that if you add a tool tip to the tree control via 
the resource editor, it doesn't actually work? I've held the mouse over 
the component every way possible but nothing seems to appear.

If this has already been fixed in 0.8.2 then apologies - I haven't got 
CVS access set up yet (really must get around to it...).

Neil

[Pythoncard-users] runtime property editor issues

[Kevin A. <al...@se...>]

On Dec 8, 2005, at 7:15 AM, Alex Tweedly wrote:

> Andy Todd wrote:
>
>> Yesterday I gave a presentation at the Australian Open Source 
>> Developers   Conference in Melbourne.
>>
>> It was remarkably similar to Kevin's presentations at PyCon and OSCON 
>> earlier this year. What I managed to do was concentrate on 
>> demonstrating the power of PythonCard and kept my slides [1] to a 
>> minimum.
>>
>> I did, however, produce a paper [2] to be included in the conference 
>> proceedings. This is a fairly comprehensive description of the 
>> history, structure and form of PythonCard. I'd like to put this on 
>> the project web site but would like some feedback about where it 
>> should sit and what I should cut or add.
>
> Marvelous !  Thank you.
>
> I found the paper very interesting for the history (some of which I 
> knew but some I didn't).
> And I learned about the runtime tools of property inspector and 
> namespace viewer; I guess I'd seen them before - they're right there 
> and obvious in the options dialog - but I hadn't really noticed them. 
> I can see I'll be using them - particularly the property inspector - a 
> lot from now on.
>
> Nothing seems particularly "missing" to me, so no contribution at the 
> moment. (Though I'm going to try to construct a tutorial or walk 
> through that uses the run-time tools ....)
>
> -- 
> Alex Tweedly       http://www.tweedly.net

The runtime Property Editor is probably the weakest of the current 
tools and I expect it has quite a few boundary condition bugs that were 
fixed in the resourceEditor. Ideally it would share more code with the 
resourceEditor property editor. I forked the resourceEditor version a 
long time ago since the runtime tool does not allow you to save 
changes, but consequently it hasn't kept up with all the fixes and 
features in the resourceEditor version, which also has callbacks into 
the main resourceEditor logic.

One possibility would be to change the modules for the property editor 
and resourceOutput.py to be part of PythonCard/templates and/or primary 
framework modules. The resourceEditor property editor class and debug 
runtime property editor would then become subclasses of the base 
property editor.

The runtime tool could be given a Save As... button so the current 
state of background could be saved. There might be some reason why that 
isn't a good idea that is currently slipping my mind, but it may also 
be one of those "why doesn't it do that already?" ideas that will make 
PythonCard more powerful for some developers. :-)

ka

Re: [Pythoncard-users] PythonCard presentation at OSDC 2005

[Kevin A. <al...@se...>]

On Dec 5, 2005, at 3:29 PM, Andy Todd wrote:

> Yesterday I gave a presentation at the Australian Open Source  
> Developers   Conference in Melbourne.
>
> It was remarkably similar to Kevin's presentations at PyCon and OSCON  
> earlier this year. What I managed to do was concentrate on  
> demonstrating the power of PythonCard and kept my slides [1] to a  
> minimum.
>
> I did, however, produce a paper [2] to be included in the conference  
> proceedings. This is a fairly comprehensive description of the  
> history, structure and form of PythonCard. I'd like to put this on the  
> project web site but would like some feedback about where it should  
> sit and what I should cut or add.
>
> All contributions are welcome.
>
> [1] http://www.halfcooked.com/presentations/osdc/presentation.html
> [2] http://www.halfcooked.com/presentations/osdc/pythoncard.html
>
> Regards,
> Andy
> --  
> ----------------------------------------------------------------------- 
> ---------
> From the desk of Andrew J Todd esq - http://www.halfcooked.com/

Wow, very nice job Andy. I expect what we want to do is integrate this  
into the documentation page

http://pythoncard.sourceforge.net/documentation.html

perhaps as a new section Overview before Getting Started. There might  
be a better section name, but it should be clear from the section or  
title of the article that it is a background and overview of PythonCard  
rather than the "jumping in" articles in the Gatting Started section.  
Inserting a few screenshots might not be a bad idea either, since they  
are already on the web site, but that would change the original paper,  
so it is up to you.

What was the response to the paper and presentation at the conference?

ka

Re: [Pythoncard-users] [newbie] drawing over a bitmap

[Kevin A. <al...@se...>]

What you want to do is use the BitmapCanvas component to do your=20
drawing after you load your existing image. Both the loading and saving=20=

are shown in the doodle sample so I suggest basing your own application=20=

on the doodle sample. The saving is handled using a helper function=20
from the graphic module so you don't have to hardcode the wxWidgets=20
graphics filetype and a wxWidgets/wxPython method call:

from PythonCard import graphic # make sure you have this in your code
path =3D 'some.png' # your filename/path here
fileType =3D graphic.bitmapType(path)
bmp =3D self.components.bufOff.getBitmap() # change to whatever your=20
BitmapCanvas is named
bmp.SaveFile(path, fileType)

If you're really in a hurry, you can always just use the doodle sample=20=

to load an image, do your drawing in the shell window (start the=20
program with the -s command line option) and then use the File->Save=20
As... menu item.

ka

On Nov 29, 2005, at 8:13 AM, Mauro Cherubini wrote:

> Dear All,
>
> sorry for the newbie question but I am fighting with the following=20
> issue:
> I am trying to add some drawing on top of an existing bitmap.
> I tried two things: the first one was to draw directly on the image=20
> setting that as the working canvas (i.e., canvas =3D=20
> self.components.canvasBackground); the second was to draw on a=20
> separate canvas.
>
> The first attempt raised an exception because apparently is not=20
> possible to draw on bitmaps. The second attempt load the drawing=20
> canvas on top of the "background" bitmap and because it is not=20
> transparent it covers automatically the background.
>
> I tried to set the 'backgroundColor' to 'None' but without success (it=20=

> says that 'AttributeError: 'BitmapCanvas' object has no attribute=20
> 'backgroundColour'').
>
> Does anybody can help me to knock my head on the right place?
> Thanks in advance for the pain you will generously cause
>
>
> Mauro
>
>
> _______________
> Mauro Cherubini
> Research Associate
> Centre de Recherche et d'Appui pour la Formation et ses Technologies=20=

> (CRAFT) / Center for Research and Support of Training and its=20
> Technologies
>
> Ecole Polytechnique F=E9d=E9rale de Lausanne (EPFL) / Swiss Federal=20
> Institute of Technology Lausanne
> web: http://craft.epfl.ch -- blog:=20
> http://www.i-cherubini.it/mauro/blog/

Re: [Pythoncard-users] PythonCard presentation at OSDC 2005

[Alex T. <al...@tw...>]

Andy Todd wrote:

> Yesterday I gave a presentation at the Australian Open Source 
> Developers   Conference in Melbourne.
>
> It was remarkably similar to Kevin's presentations at PyCon and OSCON 
> earlier this year. What I managed to do was concentrate on 
> demonstrating the power of PythonCard and kept my slides [1] to a 
> minimum.
>
> I did, however, produce a paper [2] to be included in the conference 
> proceedings. This is a fairly comprehensive description of the 
> history, structure and form of PythonCard. I'd like to put this on the 
> project web site but would like some feedback about where it should 
> sit and what I should cut or add.

Marvelous !  Thank you.

I found the paper very interesting for the history (some of which I knew 
but some I didn't).
And I learned about the runtime tools of property inspector and 
namespace viewer; I guess I'd seen them before - they're right there and 
obvious in the options dialog - but I hadn't really noticed them. I can 
see I'll be using them - particularly the property inspector - a lot 
from now on.

Nothing seems particularly "missing" to me, so no contribution at the 
moment. (Though I'm going to try to construct a tutorial or walk through 
that uses the run-time tools ....)

-- 
Alex Tweedly       http://www.tweedly.net



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[Pythoncard-users] PythonCard presentation at OSDC 2005

[Andy T. <an...@ha...>]

Yesterday I gave a presentation at the Australian Open Source Developers 
   Conference in Melbourne.

It was remarkably similar to Kevin's presentations at PyCon and OSCON 
earlier this year. What I managed to do was concentrate on demonstrating 
the power of PythonCard and kept my slides [1] to a minimum.

I did, however, produce a paper [2] to be included in the conference 
proceedings. This is a fairly comprehensive description of the history, 
structure and form of PythonCard. I'd like to put this on the project 
web site but would like some feedback about where it should sit and what 
I should cut or add.

All contributions are welcome.

[1] http://www.halfcooked.com/presentations/osdc/presentation.html
[2] http://www.halfcooked.com/presentations/osdc/pythoncard.html

Regards,
Andy
-- 
--------------------------------------------------------------------------------
 From the desk of Andrew J Todd esq - http://www.halfcooked.com/

Re: [Pythoncard-users] PythonCard on SuSE 10.0

[Phil E. <ph...@li...>]

On Sun, 2005-12-04 at 18:02 +0000, Malcolm wrote:
> Can anyone tell me how to get this going.
> The Install Guide has no instructions for installing any non-rpm 
> versions on Linux and the rpm version doesn't seem to work.
> 

Assuming you already have the wxPython libraries and so forth installed:

1. Download the PythonCard tarball and save it in your home directory.
2. Start a command line session
3. Unpack the tarball (tar -zxvf PythonCard-0.8.1.tar.gz)
4. cd PythonCard-0.8.1
5. su (type your root password when prompted)
6. python ./setup.py install
7. exit (to quit your root session and go back to your normal logon)
8.
python /usr/lib/python2.4/site-packages/PythonCard/samples/minimal/minimal.py

should then get the minimal sample application up and running.

> The rpm is for Mandrake & has a pre-requisite of python-base (which 
> doesn't exist on SuSE).
> Also, since I knew I had python product installed properly, I installed 
> the rpm using --nodeps option.

Never a very good idea to do this with RPMs from another distro, unless
you're absolutely sure you know what the effect will be! :-)

In this case, 'rpm -e' followed by the RPM name will get rid of it
safely for you. If you want to be ultra cautious, you could do 'rpm
--test -e' first to ensure that no warning messages are generated before
doing the 'rpm -e' for real.

> This seems to have installed it under /usr/lib/Python2.3 when the active 
> version of Python on SuSE is in /usr/lib/Python2.4
> 

That behaviour is by design - those RPMs are built for a version of
Mandrake which comes with Python2.3 as standard.

Hope this helps, please post back here if you have any further problems.

-- 

Phil Edwards
Brighton, UK

[Pythoncard-users] PythonCard on SuSE 10.0

[Malcolm <mal...@nt...>]

Can anyone tell me how to get this going.
The Install Guide has no instructions for installing any non-rpm 
versions on Linux and the rpm version doesn't seem to work.

The rpm is for Mandrake & has a pre-requisite of python-base (which 
doesn't exist on SuSE).
Also, since I knew I had python product installed properly, I installed 
the rpm using --nodeps option.
This seems to have installed it under /usr/lib/Python2.3 when the active 
version of Python on SuSE is in /usr/lib/Python2.4

Thanks

Re: [Pythoncard-users] [newbie] drawing over a bitmap

[Alex T. <al...@tw...>]

Mauro Cherubini wrote:

> Thanks Alex for the quick answer!
>
> Actually, when I say existing bitmap I mean an external png file that  
> represent a geographical map.
> What I want to do is to add to this map some "dots" and "lines" at  
> specific locations according to some logic I have in the rest of the  
> program.
>
> I did this using PIL, editing the existing bitmap and saving the  
> results into a new file. I was hoping to do the same with PythonCard,  
> maybe working on a transparent canvas which should overlay the  
> existing bitmap. But I cannot figure out the way to do it.
>
Is the end result just to display it ?  Or do you need to save a new PNG 
file ?

If display on screen is what you want, then it should (maybe) be easy.

I doubt if your idea of using an Image and a bitmapCanvas will work - 
you'd need transparency of the bitmapCanvas which I don't think is 
supported.

What you should be able to do is something like
(you'll need  "from PythonCard import graphic" if you don't already have 
it).
        backimage = graphic.Bitmap('D:/Our Documents/Alex/a.png')
        self.components.bufOff.drawBitmap(backimage, (0,0))
       

and then do additional drawing on top of that.

If you then need to save that to a new PNG file, it can probably be done 
- investigate the functions within graphic.py - though I've not done 
anything like that.

-- 
Alex Tweedly       http://www.tweedly.net



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Re: [Pythoncard-users] [newbie] drawing over a bitmap

[Mauro C. <mau...@ep...>]

Thanks Alex for the quick answer!

Actually, when I say existing bitmap I mean an external png file that =20=

represent a geographical map.
What I want to do is to add to this map some "dots" and "lines" at =20
specific locations according to some logic I have in the rest of the =20
program.

I did this using PIL, editing the existing bitmap and saving the =20
results into a new file. I was hoping to do the same with PythonCard, =20=

maybe working on a transparent canvas which should overlay the =20
existing bitmap. But I cannot figure out the way to do it.

At the moment I have two components in the resource file. The Image =20
component gets loaded on top of the BitmapCanvas, of which shares the =20=

same dimensions and position:

{'type':'BitmapCanvas',
     'name':'Canvas',
     'position':(200, 0),
     'size':(800, 600),
#    'backgroundColor':(255, 255, 255),
     },

{'type':'Image',
     'name':'canvasBackground',
     'position':(200, 0),
     'file':'campus_base.png',
     },

The program file contains a piece of drawing code that should be =20
activated when pressing a certain button:

    def bitmapCanvasTest(self):
         canvas =3D self.components.Canvas
         canvas.drawPoint((5, 5))
         canvas.foregroundColor =3D 'red'
         canvas.drawLine((5, 10), (20, 30))
         canvas.foregroundColor =3D 'blue'
         canvas.drawRectangle((25, 5), (30, 20))
         canvas.drawText('Text', (5, 30))
         canvas.drawRotatedText('Rotated', (60, 40), 90)
         canvas.foregroundColor =3D 'gray'
         canvas.fillColor =3D 'gray'
         canvas.drawEllipse((80, 5), (30, 30))

The problem is than when called, these commands change the ordering =20
of the canvases, bringing the BitmapCanvas on top of the Image that =20
stays as background, with subsequent loss of the reference points =20
(aka, I cannot see the background any more).

Now, what I was trying to do was to either: 1) make the BitmapCanvas =20
background transparent or either drawing directly on the png file =20
image that is loaded on the background. So far, I have not figured =20
out the right syntax to do that or/and if it is the right way to do it.

Thanks again in advance for any kind soul that wants to join this =20
discussion


Mauro





On Nov 29, 2005, at 19:20 , Alex Tweedly wrote:

> Mauro Cherubini wrote:
>
>> Dear All,
>>
>> sorry for the newbie question but I am fighting with the =20
>> following  issue:
>> I am trying to add some drawing on top of an existing bitmap.
>
> When you say "existing bitmap" do you mean an existing bitmapCanvas =20=

> component ?
>
>> I tried two things: the first one was to draw directly on the =20
>> image  setting that as the working canvas (i.e., canvas =3D  =20
>> self.components.canvasBackground); the second was to draw on a  =20
>> separate canvas.
>>
>> The first attempt raised an exception because apparently is not  =20
>> possible to draw on bitmaps.
>
> You should be able to do this. If you didn't already, see the =20
> 'gravity' example in the samples directory (or any of the other =20
> samples that use bitmapCanvas). If you still have a problem with =20
> this, post again maybe including the code that is failing ... (if =20
> you do - please try to give us a complete, small example including =20
> resource file).
>
>> The second attempt load the drawing  canvas on top of the =20
>> "background" bitmap and because it is not  transparent it covers =20
>> automatically the background.
>>
> Don't think you can get transparent bitmapCanvas.
>
>> I tried to set the 'backgroundColor' to 'None' but without =20
>> success  (it says that 'AttributeError: 'BitmapCanvas' object has =20
>> no attribute  'backgroundColour'').
>>
> You may not be able to set it to None - but you can set the =20
> backgroundColor
> (was it a mis-spelling as backgroundColour ??)
>
> I added :
>   self.components.bufOff.backgroundColor =3D (255,255,0)
> to the on_initialize of the gravity example and it worked =20
> beautifully (maybe that's the wrong word for a bright yellow =20
> background :-)
>
> --=20
> Alex Tweedly       http://www.tweedly.net
>
>
>
> --=20
> No virus found in this outgoing message.
> Checked by AVG Free Edition.
> Version: 7.1.362 / Virus Database: 267.13.8/183 - Release Date: =20
> 25/11/2005
>
>
>
> -------------------------------------------------------
> This SF.net email is sponsored by: Splunk Inc. Do you grep through =20
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> _______________________________________________
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> Pyt...@li...
> https://lists.sourceforge.net/lists/listinfo/pythoncard-users

_______________
Mauro Cherubini
Research Associate
Centre de Recherche et d'Appui pour la Formation et ses Technologies =20
(CRAFT) / Center for Research and Support of Training and its =20
Technologies

Ecole Polytechnique F=E9d=E9rale de Lausanne (EPFL) / Swiss Federal =20
Institute of Technology Lausanne
Address: CE 1.631 (B=E2timent CE), Station 1, EPFL - Ecublens, CH - =20
1015 Lausanne, Switzerland
T=E9l=E9phone:  +41 (0)21/693.27.05 -- Fax:  +41 (0)21/693.60.70 -- =20
Mobile:  +41 (0)78/ 913.50.11
web: http://craft.epfl.ch -- blog: http://www.i-cherubini.it/mauro/blog/

Re: [Pythoncard-users] [newbie] drawing over a bitmap

[Alex T. <al...@tw...>]

Mauro Cherubini wrote:

> Dear All,
>
> sorry for the newbie question but I am fighting with the following  
> issue:
> I am trying to add some drawing on top of an existing bitmap.

When you say "existing bitmap" do you mean an existing bitmapCanvas 
component ?

> I tried two things: the first one was to draw directly on the image  
> setting that as the working canvas (i.e., canvas =  
> self.components.canvasBackground); the second was to draw on a  
> separate canvas.
>
> The first attempt raised an exception because apparently is not  
> possible to draw on bitmaps. 

You should be able to do this. If you didn't already, see the 'gravity' 
example in the samples directory (or any of the other samples that use 
bitmapCanvas). If you still have a problem with this, post again maybe 
including the code that is failing ... (if you do - please try to give 
us a complete, small example including resource file).

> The second attempt load the drawing  canvas on top of the "background" 
> bitmap and because it is not  transparent it covers automatically the 
> background.
>
Don't think you can get transparent bitmapCanvas.

> I tried to set the 'backgroundColor' to 'None' but without success  
> (it says that 'AttributeError: 'BitmapCanvas' object has no attribute  
> 'backgroundColour'').
>
You may not be able to set it to None - but you can set the backgroundColor
(was it a mis-spelling as backgroundColour ??)

I added :
   self.components.bufOff.backgroundColor = (255,255,0)
to the on_initialize of the gravity example and it worked beautifully 
(maybe that's the wrong word for a bright yellow background :-)

-- 
Alex Tweedly       http://www.tweedly.net



-- 
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.1.362 / Virus Database: 267.13.8/183 - Release Date: 25/11/2005

[Pythoncard-users] [newbie] drawing over a bitmap

[Mauro C. <mau...@ep...>]

Dear All,

sorry for the newbie question but I am fighting with the following =20
issue:
I am trying to add some drawing on top of an existing bitmap.
I tried two things: the first one was to draw directly on the image =20
setting that as the working canvas (i.e., canvas =3D =20
self.components.canvasBackground); the second was to draw on a =20
separate canvas.

The first attempt raised an exception because apparently is not =20
possible to draw on bitmaps. The second attempt load the drawing =20
canvas on top of the "background" bitmap and because it is not =20
transparent it covers automatically the background.

I tried to set the 'backgroundColor' to 'None' but without success =20
(it says that 'AttributeError: 'BitmapCanvas' object has no attribute =20=

'backgroundColour'').

Does anybody can help me to knock my head on the right place?
Thanks in advance for the pain you will generously cause


Mauro


_______________
Mauro Cherubini
Research Associate
Centre de Recherche et d'Appui pour la Formation et ses Technologies =20
(CRAFT) / Center for Research and Support of Training and its =20
Technologies

Ecole Polytechnique F=E9d=E9rale de Lausanne (EPFL) / Swiss Federal =20
Institute of Technology Lausanne
web: http://craft.epfl.ch -- blog: http://www.i-cherubini.it/mauro/blog/

Re: [Pythoncard-users] (no subject)

[Andy T. <an...@ha...>]

Alex Tweedly wrote:
> Siddhartha Azad wrote:
> 
>> Hi,
>> I wanted to know if there's a way to add widgets
>> dynamically using PythonCard. For example if I wanna
>> dynamically generate GUIs without using the Resource
>> Editor. I know it is supported in wxPython.
>> If not, what are the plans for supporting such a
>> functionality?
>>  
>>
> Yes, you can do that already. See samples/noresource for an example - 
> this has both a dictionary included in the source code (rather than a 
> separate resource file), and a dynamically created component.
> 

Not to mention the dbBrowser sample, which creates widgets to represent 
the structure of a database table. The code may be slightly more complex 
than the noresource sample but this is one of the major features it was 
designed to show.

Regards,
Andy

Re: [Pythoncard-users] (no subject)

[Alex T. <al...@tw...>]

Siddhartha Azad wrote:

>Hi,
>I wanted to know if there's a way to add widgets
>dynamically using PythonCard. For example if I wanna
>dynamically generate GUIs without using the Resource
>Editor. I know it is supported in wxPython.
>If not, what are the plans for supporting such a
>functionality?
>  
>
Yes, you can do that already. See samples/noresource for an example - 
this has both a dictionary included in the source code (rather than a 
separate resource file), and a dynamically created component.

-- 
Alex Tweedly       http://www.tweedly.net



-- 
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.1.362 / Virus Database: 267.13.8/183 - Release Date: 25/11/2005

[Pythoncard-users] (no subject)

[Siddhartha A. <sid...@ya...>]

Hi,
I wanted to know if there's a way to add widgets
dynamically using PythonCard. For example if I wanna
dynamically generate GUIs without using the Resource
Editor. I know it is supported in wxPython.
If not, what are the plans for supporting such a
functionality?
Thanks, Sid.

Life is about being a Phoenix!