118 lines
3.2 KiB
Rust
118 lines
3.2 KiB
Rust
use crate::client::{Client, ClientError};
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use crate::leaks::Tracker;
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use crate::object::Object;
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use crate::pixman::Region;
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use crate::utils::buffd::MsgParser;
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use crate::utils::buffd::MsgParserError;
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use crate::wire::wl_region::*;
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use crate::wire::WlRegionId;
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use std::cell::RefCell;
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use std::rc::Rc;
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use thiserror::Error;
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pub struct WlRegion {
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id: WlRegionId,
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client: Rc<Client>,
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rect: RefCell<Region>,
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pub tracker: Tracker<Self>,
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}
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impl WlRegion {
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pub fn new(id: WlRegionId, client: &Rc<Client>) -> Self {
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Self {
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id,
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client: client.clone(),
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rect: RefCell::new(Region::new()),
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tracker: Default::default(),
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}
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}
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pub fn region(&self) -> Region {
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self.rect.borrow().clone()
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}
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fn destroy(&self, parser: MsgParser<'_, '_>) -> Result<(), DestroyError> {
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let _destroy: Destroy = self.client.parse(self, parser)?;
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self.client.remove_obj(self)?;
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Ok(())
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}
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fn add(&self, parser: MsgParser<'_, '_>) -> Result<(), AddError> {
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let add: Add = self.client.parse(self, parser)?;
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if add.width < 0 || add.height < 0 {
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return Err(AddError::NegativeExtents);
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}
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let mut rect = self.rect.borrow_mut();
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*rect = rect.add(&Region::rect(add.x, add.y, add.width as _, add.height as _));
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Ok(())
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}
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fn subtract(&self, parser: MsgParser<'_, '_>) -> Result<(), SubtractError> {
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let subtract: Subtract = self.client.parse(self, parser)?;
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if subtract.width < 0 || subtract.height < 0 {
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return Err(SubtractError::NegativeExtents);
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}
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let mut rect = self.rect.borrow_mut();
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*rect = rect.subtract(&Region::rect(
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subtract.x,
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subtract.y,
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subtract.width as _,
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subtract.height as _,
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));
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Ok(())
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}
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}
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object_base! {
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WlRegion, WlRegionError;
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DESTROY => destroy,
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ADD => add,
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SUBTRACT => subtract,
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}
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impl Object for WlRegion {
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fn num_requests(&self) -> u32 {
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SUBTRACT + 1
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}
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}
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dedicated_add_obj!(WlRegion, WlRegionId, regions);
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#[derive(Debug, Error)]
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pub enum WlRegionError {
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#[error("Could not process `destroy` request")]
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DestroyError(#[from] DestroyError),
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#[error("Could not process `add` request")]
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AddError(#[from] AddError),
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#[error("Could not process `subtract` request")]
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SubtractError(#[from] SubtractError),
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}
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#[derive(Debug, Error)]
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pub enum DestroyError {
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#[error("Parsing failed")]
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ParseFailed(#[source] Box<MsgParserError>),
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#[error(transparent)]
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ClientError(Box<ClientError>),
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}
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efrom!(DestroyError, ParseFailed, MsgParserError);
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efrom!(DestroyError, ClientError);
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#[derive(Debug, Error)]
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pub enum AddError {
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#[error("Parsing failed")]
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ParseFailed(#[source] Box<MsgParserError>),
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#[error("width and/or height are negative")]
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NegativeExtents,
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}
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efrom!(AddError, ParseFailed, MsgParserError);
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#[derive(Debug, Error)]
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pub enum SubtractError {
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#[error("Parsing failed")]
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ParseFailed(#[source] Box<MsgParserError>),
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#[error("width and/or height are negative")]
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NegativeExtents,
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}
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efrom!(SubtractError, ParseFailed, MsgParserError);
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