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layer-shell: implement margin

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This commit is contained in:
Julian Orth 2024-05-07 16:18:10 +02:00
parent a5d6b0f265
commit 8dc31110b9
1 changed files with 34 additions and 11 deletions
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45
src/ifs/wl_surface/zwlr_layer_surface_v1.rs
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@ -187,6 +187,11 @@ impl ZwlrLayerSurfaceV1RequestHandler for ZwlrLayerSurfaceV1 {
fn set_margin(&self, req: SetMargin, _slf: &Rc<Self>) -> Result<(), Self::Error> {
let mut pending = self.pending();
for s in [req.top, req.right, req.bottom, req.left] {
if (s as i64).abs() > u16::MAX as i64 {
return Err(ZwlrLayerSurfaceV1Error::ExcessiveMargin);
}
}
pending.margin = Some((req.top, req.right, req.bottom, req.left));
Ok(())
}
@ -269,7 +274,21 @@ impl ZwlrLayerSurfaceV1 {
return;
};
let (mut width, mut height) = self.size.get();
let (available_width, available_height) = global.position().size();
let (mt, mr, mb, ml) = self.margin.get();
let (mut available_width, mut available_height) = global.position().size();
let anchor = self.anchor.get();
if anchor.contains(LEFT) {
available_width -= ml;
}
if anchor.contains(RIGHT) {
available_width -= mr;
}
if anchor.contains(TOP) {
available_height -= mt;
}
if anchor.contains(BOTTOM) {
available_height -= mb;
}
if width == 0 {
width = available_width;
}
@ -298,22 +317,24 @@ impl ZwlrLayerSurfaceV1 {
if anchor == 0 {
anchor = LEFT | RIGHT | TOP | BOTTOM;
}
let (mt, mr, mb, ml) = self.margin.get();
let opos = global.pos.get();
let (owidth, oheight) = opos.size();
let mut x1 = 0;
let mut y1 = 0;
if anchor.contains(LEFT) {
if anchor.contains(RIGHT) {
x1 += (opos.width() - width) / 2;
}
if anchor.contains(LEFT | RIGHT) {
x1 = (owidth - width - ml - mr) / 2;
} else if anchor.contains(LEFT) {
x1 = ml;
} else if anchor.contains(RIGHT) {
x1 += opos.width() - width;
x1 = owidth - width - mr;
}
if anchor.contains(TOP) {
if anchor.contains(BOTTOM) {
y1 += (opos.height() - height) / 2;
}
if anchor.contains(TOP | BOTTOM) {
y1 = (oheight - height - mt - mb) / 2;
} else if anchor.contains(TOP) {
y1 = mt;
} else if anchor.contains(BOTTOM) {
y1 += opos.height() - height;
y1 = oheight - height - mb;
}
let o_rect = Rect::new_sized(x1, y1, width, height).unwrap();
let a_rect = o_rect.move_(opos.x1(), opos.y1());
@ -473,6 +494,8 @@ pub enum ZwlrLayerSurfaceV1Error {
UnknownLayer(u32),
#[error("Surface size must not be larger than 65535x65535")]
ExcessiveSize,
#[error("Margin must not be larger than 65535")]
ExcessiveMargin,
#[error("Unknown anchor {0}")]
UnknownAnchor(u32),
#[error("Unknown keyboard interactivity {0}")]