[racket-users] Re: Application Templates!
I am not sure that a template in the style of "dotnet new" is directly applicable for Racket -- the .Net framework is, well a framework. which is a library that expects the users to structure their own programs in certain ways. The templates fill the need of setting up the boilerplate code for different kind of applications as required by the .Net framework. Racket applications don't need large amounts of "setup code", most of the code is very specific to the application itself, so not sure what a template would contain apart from very basic things. I think Racket would benefit by a suite of applications which are small but not trivial and with a source code which is commented in more detail than a regular application. I attempted to do this with my blog posts, some of which describe more-or-less complete applications (most of them games). The entire source code is in a single file which can be run directly and is available as a GitHub Gist linked from the blog posts. Here are some examples: * ishido game (936 lines): https://gist.github.com/alex-hhh/2e204b3a9d9d7094f65a0b585d0b7480 * tetris game (893 lines): https://gist.github.com/alex-hhh/2233aee39852f4e0aead4af4cafb40d5 * chess board (893 lines): https://gist.github.com/alex-hhh/4817c4d0353e40b72108e7e753c3d0da * password generator GUI (346 lines): https://gist.github.com/alex-hhh/6acbbb8ebca47c4cfaa2540499494af6 * password generator, command line (142 lines): https://gist.github.com/alex-hhh/27286f4609ea0c989675e5c946ca39de These are of course not templates, but they could serve as the starting points for users who already have some experience with programming and want to try out some more complex programs. Alex. On Thursday, August 20, 2020 at 5:49:37 AM UTC+8 Stephen De Gabrielle wrote: > I’ve started a small collection! > > https://github.com/racket-templates > > These are GitHub templates so you use them by clicking ‘use this template‘ > on the repo > > I’m looking for more ideas/contributions; > From the top of my head; > - ‘worker service’ (dotnet new has this) > - DrRacket plugin > - Keybinding package > - Teachpack > - raco command > - scribble (multiple) > - pollen (multiple) > - slideshow > - racket embedded in c app > > Can you suggest(or submit) any others? > > < the reasons is to give new users another way ins>> > > Are language specific templates a good idea? > - typed racket > - datalog > - parenlog > - rosette > > > Thoughts suggestions criticisms appreciated! > > Stephen > > On Wed, 19 Aug 2020 at 00:02, Stephen De Gabrielle > wrote: > >> I got jealous that dot net has dotnet new with lots of templates so I >> made a GitHub template for a cli command >> https://github.com/spdegabrielle/cli-command >> >> If you have an idea for a template you should make one! >> >> If you have a cool package that can be demonstrated as an application >> maybe consider a template as a way to introduce new Racketeers to your >> package? >> >> Best >> >> Stephen >> >> -- >> >> >> >> -- > > -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/racket-users/856e1c7a-5afc-42d8-89f0-6b6fb81158d5n%40googlegroups.com.
[racket-users] Re: GUI zoom and normal-control-font
At least on Windows, users can select the text size in the Windows System Settings,and Racket GUI applications will use that setting. So I can make the text of the GUI controls bigger or smaller by adjusting this setting. The Racket GUI have to be restarted though for the settings to take effect -- they don't react dynamically to text size changes. Of course this is a system level setting and all applications on the machine will use the chosen text size. Alex. On Wednesday, August 19, 2020 at 12:31:42 AM UTC+8 James Platt wrote: > I'm looking at implementing a zoom contents (not zoom window) feature in a > GUI with lots of elements and I'm wondering about the best way to do this. > Most, if not all, standard GUI widgets in Racket can be resized by changing > the font size of their contents or label. Then redraw the widget and you > have the whole thing in a new size. So zoom could be done by creating a > function which handles each element individually but I would like a more > general solution, if possible. Most widgets use the value > normal-control-font for their default but it doesn't look like this can be > changed at present. If there were a setter for normal-control-font, it > looks like you could have a menu item change it, then recursively get the > children of the frame it is attached to and redraw them. Would this > actually work? Is there a better way to do it? -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/racket-users/33fa4a60-6c4b-4948-9288-6ae45a2d75b6n%40googlegroups.com.
Re: [racket-users] GUI zoom and normal-control-font
On 8/19/2020 1:37 PM, James Platt wrote: > > On 8/18/2020 12:31 PM, James Platt wrote: >> I'm looking at implementing a zoom contents (not zoom window) feature in a GUI with lots of elements and I'm wondering about the best way to do this. Most, if not all, standard GUI widgets in Racket can be resized by changing the font size of their contents or label. Then redraw the widget and you have the whole thing in a new size. So zoom could be done by creating a function which handles each element individually but I would like a more general solution, if possible. Most widgets use the value normal-control-font for their default but it doesn't look like this can be changed at present. If there were a setter for normal-control-font, it looks like you could have a menu item change it, then recursively get the children of the frame it is attached to and redraw them. Would this actually work? Is there a better way to do it? > > If you can access (or render) the contents as a 'pict', then it be scaled somewhat arbitrarily (though a scaled version is not guaranteed to look good). > https://docs.racket-lang.org/pict/Pict_Drawing_Adjusters.html > > It is a form of BitBLT operation. I would search the docs for "blt" or "blit" in addition to "scale" and "size". Sorry I can't point you more directly to relevant functions: I've done a lot of GUI programming, but, unfortunately, I know it from C++ using device contexts directly, not from using Racket's graphics. If I understand correctly, I would do that like in the Stackoverflow post below. Note the need for using the bitmap% version of the button label. The advantage of this approach is that you can change the label dynamically with a send. The drawback is that I would have to create a modified version of every widget. I was just hoping for a solution which would not require so much customization of a standard Racket package. https://stackoverflow.com/questions/48414363/how-to-change-the-color-of-text-in-a-racket-gui-button/48468797#48468797 Sorry, it was not clear to me that you wanted to resize widgets (child windows). Typically when one speaks about a window's "content" they are referring to text or imagery drawn onto the window's backing bitmap. Basically, you need to push a resize message to every child. I'm not sure the best way to do that, but my first thought would be something involving panels (or panes). When a panel gets resized, all its children are resized as well. https://docs.racket-lang.org/gui/windowing-overview.html#%28part._containeroverview%29 https://docs.racket-lang.org/gui/panel_.html https://docs.racket-lang.org/gui/pane_.html The trick is that normally a panel would be sized relative to its parent. To effect a "zoom" you would have to override that behavior so at least the (Z-stack) bottom panel can be made larger than the application window's viewing area. George -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/racket-users/65bbe973-c309-1f92-620a-76d4708f32c7%40comcast.net.
[racket-users] Re: Application Templates!
I’ve started a small collection! https://github.com/racket-templates These are GitHub templates so you use them by clicking ‘use this template‘ on the repo I’m looking for more ideas/contributions; >From the top of my head; - ‘worker service’ (dotnet new has this) - DrRacket plugin - Keybinding package - Teachpack - raco command - scribble (multiple) - pollen (multiple) - slideshow - racket embedded in c app Can you suggest(or submit) any others? <> Are language specific templates a good idea? - typed racket - datalog - parenlog - rosette Thoughts suggestions criticisms appreciated! Stephen On Wed, 19 Aug 2020 at 00:02, Stephen De Gabrielle wrote: > I got jealous that dot net has dotnet new with lots of templates so I made > a GitHub template for a cli command > https://github.com/spdegabrielle/cli-command > > If you have an idea for a template you should make one! > > If you have a cool package that can be demonstrated as an application > maybe consider a template as a way to introduce new Racketeers to your > package? > > Best > > Stephen > > -- > > > > -- -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/racket-users/CAGHj7-%2B-4fbJhjgOha1kH%2ByV%3DO01oGeKcqxALwupssrdGT8esA%40mail.gmail.com.
[racket-users] Debugging a tool
Is it possible to run the debugger on an IDE tool? Or if that isn't possible, is there a way to get a repl? #lang debug ( https://docs.racket-lang.org/debug/index.html) works for printing out values to the console, but adding a call to (debug-repl) causes the code to fail raco setup: write: cannot marshal value that is embedded in compiled code value: # context...: linklet-bundle->bytes for-loop flatten-linklet-directory write-linklet-directory /usr/racket/collects/compiler/private/../../racket/private/more-scheme. rkt:261:28 /usr/racket/collects/compiler/private/cm-minimal.rkt:730:6 /usr/racket/collects/racket/private/more-scheme.rkt:148:2: call-with- break-parameterization /usr/racket/collects/racket/file.rkt:262:5 /usr/racket/collects/compiler/private/cm-minimal.rkt:608:0: compile-zo* /usr/racket/collects/compiler/private/cm-minimal.rkt:407:15 /usr/racket/collects/compiler/private/cm-minimal.rkt:396:12: build /usr/racket/collects/compiler/private/cm-minimal.rkt:372:0: maybe-compile -zo /usr/racket/collects/compiler/private/cm-minimal.rkt:206:0: compile-root /usr/racket/collects/compiler/private/cm-minimal.rkt:102:4 /usr/racket/collects/setup/../racket/private/more-scheme.rkt:261:28 [repeats 1 more time] -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/racket-users/d04e0af9-a02e-46d9-8298-5aee13896a95o%40googlegroups.com.
Re: [racket-users] GUI zoom and normal-control-font
> > On 8/18/2020 12:31 PM, James Platt wrote: >> I'm looking at implementing a zoom contents (not zoom window) feature in a >> GUI with lots of elements and I'm wondering about the best way to do this. >> Most, if not all, standard GUI widgets in Racket can be resized by changing >> the font size of their contents or label. Then redraw the widget and you >> have the whole thing in a new size. So zoom could be done by creating a >> function which handles each element individually but I would like a more >> general solution, if possible. Most widgets use the value >> normal-control-font for their default but it doesn't look like this can be >> changed at present. If there were a setter for normal-control-font, it >> looks like you could have a menu item change it, then recursively get the >> children of the frame it is attached to and redraw them. Would this >> actually work? Is there a better way to do it? > > If you can access (or render) the contents as a 'pict', then it be scaled > somewhat arbitrarily (though a scaled version is not guaranteed to look good). > https://docs.racket-lang.org/pict/Pict_Drawing_Adjusters.html > > It is a form of BitBLT operation. I would search the docs for "blt" or > "blit" in addition to "scale" and "size". Sorry I can't point you more > directly to relevant functions: I've done a lot of GUI programming, but, > unfortunately, I know it from C++ using device contexts directly, not from > using Racket's graphics. If I understand correctly, I would do that like in the Stackoverflow post below. Note the need for using the bitmap% version of the button label. The advantage of this approach is that you can change the label dynamically with a send. The drawback is that I would have to create a modified version of every widget. I was just hoping for a solution which would not require so much customization of a standard Racket package. https://stackoverflow.com/questions/48414363/how-to-change-the-color-of-text-in-a-racket-gui-button/48468797#48468797 -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/racket-users/08CD0FAF-AFCD-4B43-87C4-422C79AA2361%40biomantica.com.
Re: [racket-users] Unfortunate error message for wrong number of arguments to a format string in printf
Thanks for the report! This has been fixed for the next release. Matthew At Wed, 19 Aug 2020 12:16:24 -0400, William Byrd wrote: > To wit: > > Chez Scheme Version 9.5.3 > Copyright 1984-2019 Cisco Systems, Inc. > > > (printf "~s") > > > Exception in printf: too few arguments for control string "~s" > Type (debug) to enter the debugger. > > > > Process scheme finished > > > Welcome to Racket v7.8 [cs]. > > (printf "~s") > > ; /: division by zero [,bt for context] > > > > Cheers, > > --Will > > -- > You received this message because you are subscribed to the Google Groups > "Racket Users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to racket-users+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/racket-users/CACJoNKGKzuTt0DdLjOLDv6jbjwxTmga > UzAmrvL6cfwdz%3Dfsypg%40mail.gmail.com. -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/racket-users/20200819102010.3a6%40sirmail.smtps.cs.utah.edu.
[racket-users] Unfortunate error message for wrong number of arguments to a format string in printf
To wit: Chez Scheme Version 9.5.3 Copyright 1984-2019 Cisco Systems, Inc. > (printf "~s") Exception in printf: too few arguments for control string "~s" Type (debug) to enter the debugger. > Process scheme finished Welcome to Racket v7.8 [cs]. > (printf "~s") ; /: division by zero [,bt for context] > Cheers, --Will -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/racket-users/CACJoNKGKzuTt0DdLjOLDv6jbjwxTmgaUzAmrvL6cfwdz%3Dfsypg%40mail.gmail.com.
