107 lines
3.1 KiB
Rust
107 lines
3.1 KiB
Rust
use {
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crate::{
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client::{Client, ClientError},
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ifs::wl_surface::WlSurface,
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leaks::Tracker,
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object::Object,
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utils::buffd::{MsgParser, MsgParserError},
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wire::{wp_viewport::*, WpViewportId},
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},
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std::rc::Rc,
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thiserror::Error,
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};
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pub struct WpViewport {
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pub id: WpViewportId,
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pub client: Rc<Client>,
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pub surface: Rc<WlSurface>,
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pub tracker: Tracker<Self>,
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}
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impl WpViewport {
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pub fn new(id: WpViewportId, surface: &Rc<WlSurface>) -> Self {
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Self {
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id,
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client: surface.client.clone(),
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surface: surface.clone(),
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tracker: Default::default(),
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}
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}
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pub fn install(self: &Rc<Self>) -> Result<(), WpViewportError> {
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if self.surface.viewporter.get().is_some() {
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return Err(WpViewportError::ViewportExists);
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}
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self.surface.viewporter.set(Some(self.clone()));
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Ok(())
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}
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fn destroy(&self, msg: MsgParser<'_, '_>) -> Result<(), WpViewportError> {
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let _req: Destroy = self.client.parse(self, msg)?;
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self.surface.pending.src_rect.set(Some(None));
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self.surface.pending.dst_size.set(Some(None));
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self.surface.viewporter.take();
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self.client.remove_obj(self)?;
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Ok(())
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}
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fn set_source(&self, msg: MsgParser<'_, '_>) -> Result<(), WpViewportError> {
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let req: SetSource = self.client.parse(self, msg)?;
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let rect = if req.x == -1 && req.y == -1 && req.width == -1 && req.height == -1 {
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None
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} else {
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let invalid = req.x < 0 || req.y < 0 || req.width <= 0 || req.height <= 0;
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if invalid {
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return Err(WpViewportError::InvalidSourceRect);
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}
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Some([req.x, req.y, req.width, req.height])
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};
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self.surface.pending.src_rect.set(Some(rect));
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Ok(())
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}
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fn set_destination(&self, msg: MsgParser<'_, '_>) -> Result<(), WpViewportError> {
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let req: SetDestination = self.client.parse(self, msg)?;
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let size = if req.width == -1 && req.height == -1 {
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None
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} else if req.width <= 0 || req.height <= 0 {
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return Err(WpViewportError::InvalidDestRect);
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} else {
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Some((req.width, req.height))
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};
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self.surface.pending.dst_size.set(Some(size));
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Ok(())
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}
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}
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object_base! {
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WpViewport;
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DESTROY => destroy,
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SET_SOURCE => set_source,
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SET_DESTINATION => set_destination,
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}
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impl Object for WpViewport {
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fn num_requests(&self) -> u32 {
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SET_DESTINATION + 1
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}
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}
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simple_add_obj!(WpViewport);
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#[derive(Debug, Error)]
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pub enum WpViewportError {
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#[error("Parsing failed")]
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MsgParserError(#[source] Box<MsgParserError>),
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#[error(transparent)]
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ClientError(Box<ClientError>),
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#[error("The surface already has a viewport")]
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ViewportExists,
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#[error("Rectangle is empty or outside the first quadrant")]
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InvalidSourceRect,
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#[error("Rectangle is empty")]
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InvalidDestRect,
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}
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efrom!(WpViewportError, MsgParserError);
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efrom!(WpViewportError, ClientError);
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