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Screenshots in wasm #8455

Merged
merged 4 commits into from
Apr 28, 2023
Merged

Screenshots in wasm #8455

merged 4 commits into from
Apr 28, 2023

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mockersf
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Objective

Solution

  • Create a blob from the image data, generate a url to that blob, add an a element to the document linking to that url, click on that element, then revoke the url
  • This will automatically trigger a download of the screenshot file in the browser

@mockersf mockersf added the O-Web Specific to web (WASM) builds label Apr 22, 2023
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@nicopap nicopap left a comment

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LGTM. just a question

html_element.click();
web_sys::Url::revoke_object_url(&url)?;
Ok::<(), JsValue>(())
})() {
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The syntax for "try/catch" in rust is very unusual 🙂

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you... get used to it. and it provides nice scoping

crates/bevy_render/src/view/window/screenshot.rs Outdated Show resolved Hide resolved
@alice-i-cecile alice-i-cecile added C-Enhancement A new feature A-Rendering Drawing game state to the screen A-Diagnostics Logging, crash handling, error reporting and performance analysis labels Apr 22, 2023
Comment on lines +86 to +95
'Blob',
'Document',
'Element',
'HtmlElement',
'Node',
'Url',
'Window',
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Will including more web-sys features meaningfully affect our wasm build sizes?

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Just tried a build, it's 14kB smaller with this PR. Build duration were similar

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Amazing that it got smaller by adding features. Works for me

@cart cart added this pull request to the merge queue Apr 28, 2023
Merged via the queue into bevyengine:main with commit cb286e5 Apr 28, 2023
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A-Diagnostics Logging, crash handling, error reporting and performance analysis A-Rendering Drawing game state to the screen C-Enhancement A new feature O-Web Specific to web (WASM) builds
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4 participants