March 2026 - Therion

Mapiah v0.2.39 - The Seeds of Love release
by Rodrigo Severo 06 Mar '26

06 Mar '26

Hi, Just release Mapiah version 0.2.39 - The [Seeds of Love](https://youtu.be/VAtGOESO7W8) release. Hopefully this release will be accepted by Flathub so Flatpak users will finally be able to run Therion from Mapiah. The other packages - Liux/AppImage, MacOS and Windows could do it since version 0.2.37 but neither 0.2.37 nor 0.2.38 were accepted by Flathub for "security issues", i.e., Mapiah was trying to call an external app, Therion. To solve this issue I had to bundle Therion inside Mapiah Flatpak package. It seems as an abomination to me but I am trying to see if it works well enough for me to keep doing it. As far as my tests show, it is working but Therion is way slower inside Mapiah Flatpak package. This might be solvable. Lets see what the future brings us. # Changelog ## 0.2.39 - 2026-03-05 - [The Seeds of Love](https://youtu.be/VAtGOESO7W8) release * New features: * Created keyboard shortcuts to run Therion: Ctrl+T (choose THConfig file and run Therion) and T (run Therion). * Showing PLA type and subtype at PLA overlay window. * Setting PLA type and subtype at PLA overlay window. * Element type showing also subtype on multiple elements clicked overlay window. * Flathub/flatpak release running embedded Therion. * Fixed bugs: * THConfig select file dialog not accepting common thconfig files. [reported by CaverBruce (issue [#16](https://github.com/rsevero/mapiah/issues/16))] * PLA types of created elements not added as last and most used types. * Creating new line with a subtype throws. * Test 3400 failing. * Test 3500 failing. * Unknown subtypes shown as internal subtype ID (all user type subtypes). * Setting subtype should update the last used subtype for the PLA type. * Infrastructure maintenance: * Converted MPGeneralController to a MobX store. * Created MPButtonTypes chooseTHConfigAndRunTherion and runTherion to run Therion. * Created TH2FileEditcontroller.getTHFileWidgetBuildContext(). * Removed unused methods from TH2FileEditElementEditController. * Created addPoint() method in TH2FileEditElementEditController. * Monitoring subtypes with last used PLA types. * flutter upgrade to 3.41.3 * flutter pub upgrade --major-versions * Embedding Therion (and its dependencies) in Flathub/Flatpak release. Please keep reporting any issues. Regards, Rodrigo Severo

1 0

Mapiah release 0.2.38 - The Run Therion release
by Rodrigo Severo 01 Mar '26

01 Mar '26

Hi. I have jsut released version 0.2.37 and 0.2.38 of Mapiah. It is available at https://github.com/rsevero/mapiah/releases/tag/v0.2.38 as usual. # Changelog ## 0.2.38 - 2026-06-01 - The [Run therion in Flathub] release * Bug fixes: * Flatpak release not running Therion from Mapiah. ## 0.2.37 - 2026-03-01 - The [Run Therion] release * New features: * Created Settings page. * Settings page with real time per setting type validation. * Settings page with "reset" button for each setting and for all settings. * Created new settings type: FilePickerExecutable. * Running Therion. * Tracking warnings and errors on Therion run output. * Debug output on Windows search for therion install info. * Caching Therion install path on windows on search. * MacOS Therion runner implementation. * "Choose THConfig file and run Therion" and "Run Therion" buttons painted red if no Therion found. * "Choose THConfig file and run Therion" and "Run Therion" buttons directed to appropriate help page in case no Therion is found. * Fixed bugs: * 'Cancel' button on settings page not closing page. * Therion run output should be selectable as a whole and not only single lines. * Therion run output has no line breaks after copy/paste. * Searching for Therion install path on windows always failing. * Therion run on Windows. * Windows tests. * Set therion path not used on Windows. * Regression on appLocalizations initialization on MapiahHome. * Infrastructure maintenance: * Included "Current status" section in README.md. [requested by CaverBruce] * Included "Choose THConfig and run Therion" and "Run Therion" buttons in both MapiaHome and TH2FileEdit pages. * Moved business logic of running therion from MPRunTherionDialogWidget to new MPTherionRunner. * Added MPTherionRunner ok < warning < error escalation test. * Added multi line selection + clickable warnings and errors test. * MPTherionRunner checking exit code at end of therion run. * Fixed therion run for flatpak releases. * Renamed MPSettingsType -> MPSettingType and MPSettingTypeType -> MPSettingTypeType. * Renamed MPSettingType -> MPSettingID and MPSettingTypeType -> MPSettingType. * Unified therion executable path setting and therion executable path for encoding discovery. * Renamed MPSettingsController.getTYPE -> getTYPEWithDefault. * Created MPSettingsController.getTYPEIfSet() that returns null if not set. * Created MPBaseTherionRunner class with getUserDefinedTherionExecutablePath() method. * therionExecutablePath and preferredExecutablePath from MPTherionRunner not used on Linux. * Created MPLinuxTherionRunner. Mapiah now runs Therion. I would like to know if Mapiah on Windows can run Therion without the delays reported recently on this list. I tested if on Windows 10 and it has no delay. Unforutnatelly I still don´t have Windows 11 to test. Regards, Rodrigo Severo

1 0

Colored Lines Based On Attributes
by alastair gott 01 Mar '26

01 Mar '26

HI Everyone, Follow up on this thread from 17 years ago. https://mailman.speleo.sk/pipermail/therion/2009-September/002633.html We have tweaked the code, with Andrews help. To make it work In th2/Lines: Type u:wall Options: -clip off -attr color "(0, 0.5, 0)" Or -clip off -attr color green In thconfig: layout local code metapost def l_u_wall (expr P)= T:=identity; if known(ATTR_color): pickup PenA; draw P withpen PenA withcolor scantokens(ATTR_color); fi; Enddef; initsymbol("l_u_wall"); endcode endlayout

2 3