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Add layer shell support and fix floating windows

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Now, I actually save the river-layer-shell-v1 and keep track of the
non-exclusive area. The layout calculation uses the usable area instead
of the entire output's geometry.

I removed boundary clamping for the floating windows because it was a
bit janky when hitting the edges. I'll probably add it back at some
point. I also made windows default to 75% of the usable area instead of
keeping their tiled size so that maximized windows look decent when
floating for the first time. Finally, since I removed the clamping, I
added a center_float keybind to center a floating window. If you're
cycling through focused windows and one isn't on the screen, you can use
the center_float bind to get the window visible again.

Replaced all divTrunc with divFloor to be consistent. I think they
should all be positive, anyways, so they'd be the same, but I like just
having one.
This commit is contained in:
Ben Buhse 2026-02-14 11:29:00 -06:00
commit 5c427234d7
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9 changed files with 108 additions and 71 deletions
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15
src/Window.zig
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@ -184,14 +184,17 @@ pub fn manage(window: *Window) void {
river_window_v1.setTiled(.{});
if (window.float_width == 0) {
// Never floated before; use current dimensions but centered on output
window.float_width = window.width;
window.float_height = window.height;
// Never floated before; use 75% of usable area, centered on output
if (window.output) |output| {
// Need to find center and then subtract half of the window's width/height
window.float_x = output.x + @divTrunc(output.width, 2) - @divTrunc(window.width, 2);
window.float_y = output.y + @divTrunc(output.height, 2) - @divTrunc(window.height, 2);
window.float_width = @divFloor(output.usable_width * 3, 4);
window.float_height = @divFloor(output.usable_height * 3, 4);
window.float_x = output.usable_x + @divFloor(output.usable_width, 2) - @divFloor(window.float_width, 2);
window.float_y = output.usable_y + @divFloor(output.usable_height, 2) - @divFloor(window.float_height, 2);
} else {
window.float_width = window.width;
window.float_height = window.height;
}
river_window_v1.proposeDimensions(window.float_width, window.float_height);
} else {
// Window has floated before; re-use its old dimensions
river_window_v1.proposeDimensions(window.float_width, window.float_height);