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ci: desktop snapshots render animations at their end (#7916)

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* ci: desktop snapshots render animations at their end

* ci: re-record the desktop snapshots of the loading link preview
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Evgeny @ SimpleX Chat authored and GitHub committed 2026-10-29 09:55:40 +00:00
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scripts/ci/desktop-linux/README.md
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@@ -31,7 +31,7 @@ Queueing for a runner adds from under a minute to 20 minutes. Results are artifa
## Snapshots
`:common:desktopTest` runs `SnapshotTest` (`apps/multiplatform/common/src/desktopTest/kotlin/chat/simplex/app/SnapshotTest.kt`). It renders each preview listed in `previewScenes` with Compose's `ImageComposeScene`, 402 dp wide at density 1, one pixel per dp, as tall as the preview's content up to 874 dp, so a preview that fills any height is 874 pixels tall. It renders the light and dark themes without a wallpaper, over the theme's background, and keeps the fourth frame, 3 s of frame time after the first. As the app does for its screens, the test provides an `AppBarHandler` (`LocalAppBarHandler`) and the window state (`simplexWindowState`, sized as the scene). Each preview is rendered at the default font size; the chat item previews (package `views.chat.item`) also at 1.4 and 1.5, the two largest values of the desktop app's font size setting.
`:common:desktopTest` runs `SnapshotTest` (`apps/multiplatform/common/src/desktopTest/kotlin/chat/simplex/app/SnapshotTest.kt`). It renders each preview listed in `previewScenes` with Compose's `ImageComposeScene`, 402 dp wide at density 1, one pixel per dp, as tall as the preview's content up to 874 dp, so a preview that fills any height is 874 pixels tall. It renders the light and dark themes without a wallpaper, over the theme's background, and keeps the fourth frame, 3 s of frame time after the first. The scene's coroutine context sets the animation duration scale (`MotionDurationScale`) to 0, so each animation ends at its first frame and a spinner is drawn the same in every run. As the app does for its screens, the test provides an `AppBarHandler` (`LocalAppBarHandler`) and the window state (`simplexWindowState`, sized as the scene). Each preview is rendered at the default font size; the chat item previews (package `views.chat.item`) also at 1.4 and 1.5, the two largest values of the desktop app's font size setting.
`everyPreviewIsRendered` reads the Kotlin sources of `commonMain` and `desktopMain` without comments, and fails when a `@Preview` function is missing from both `previewScenes` and `previewsCallingCore`, or when either names a function absent from the sources; a scene is named `<file>.<function>`. `previewsCallingCore` lists the previews whose layouts validate names or descriptions with the core library (`chatValidName`, `chatJsonLength`), which the test JVM does not load, so they are not rendered. The previews of `androidMain` and of the Android app module are left out too, since they use Android APIs.