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LGUG2Z
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The window in front of every container is see-through, unless its container has the focus on the focused monitor, so that the window being worked in stands out. The opacity of a window is a property KWin has: komorebi sets it through the bridge, as a fraction of 255, and KWin draws the window so. The window manager keeps the opacity it gave each window and, after every event and message, sends only the difference, makes a window opaque again when it should no longer be see-through, and makes every one opaque when it stops. Windows an ignore rule covers, and workspaces that do not tile, are left as they are. The patched border effect already draws a window again when its opacity changes, so the border follows it. komorebic gets transparency, transparency-alpha and toggle-transparency, and the state of the daemon says what the settings are. vm-features checks the pixels in the middle of a focused window and of one that is not. A monocled window is opaque on the focused monitor and see-through on another. komorebi.json takes transparency, transparency_alpha and transparency_ignore_rules.
64 lines
2.7 KiB
Markdown
64 lines
2.7 KiB
Markdown
# Transparency
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komorebi can make the windows that do not have the focus see-through, so that the one you are
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working in stands out. It does not draw anything itself: the opacity of a window is a property
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KWin has, which komorebi sets. Transparency is off by default.
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## Turning it on
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[`komorebic transparency`](../cli/transparency.md) turns transparency on or off,
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[`komorebic toggle-transparency`](../cli/toggle-transparency.md) switches it, and
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[`komorebic transparency-alpha`](../cli/transparency-alpha.md) sets how opaque a see-through window
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is, from 0 (not there at all) to 255 (not see-through): 200 by default.
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```sh
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komorebic transparency enable
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komorebic transparency-alpha 150
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komorebic toggle-transparency
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```
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## In komorebi.json
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The same settings are keys of [`komorebi.json`](configuration.md#transparency): `transparency`,
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`transparency_alpha` and `transparency_ignore_rules`, a list of rules, as [Rules](rules.md)
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explains them, for the windows that are never see-through.
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```json
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{
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"transparency": true,
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"transparency_alpha": 150,
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"transparency_ignore_rules": [
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{ "kind": "Exe", "id": "mpv", "matching_strategy": "Equals" }
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]
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}
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```
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The file sets them when the daemon starts and when the file changes. A file that leaves out
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`transparency` or `transparency_alpha` has the defaults, off and 200, so a change made with a
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command does not survive the file changing. The ignore rules add up, as the other rules do.
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## Which windows are see-through
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On the workspace each monitor shows, the window in front in every container is see-through unless
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its container has the focus on the focused monitor. A window on a monitor that is not the focused
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one is see-through, whatever its container. On a workspace with a monocle the monocled window is
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the only one that counts: it is opaque on the focused monitor and see-through on another. A
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workspace that does not tile has no see-through windows, and neither does a window that a rule
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keeps out of it: the rules are the `transparency_ignore_rules` of
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[`komorebi.json`](configuration.md#transparency), which no command sets.
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Windows that are not in front, such as the other windows of a stack, are not on the screen and
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are left as they are. With transparency off, every window is opaque.
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## What is put back
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When komorebi exits, every window it made see-through is opaque again. A window that closes needs
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nothing.
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## The border
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The border effect draws a window from a texture that has the window's opacity in it. The build
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of the effect that the flake installs draws a window again when its opacity changes, so the border
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and the window change together. With the stock effect a change of opacity alone does not show
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until the window changes.
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