From ca192e18a9f49d7ffad3126a026e013b7c2c80e8 Mon Sep 17 00:00:00 2001
From: Nova <technobaboo@gmail.com>
Date: Mon, 19 Sep 2022 08:13:23 -0400
Subject: [PATCH] feat(wayland): kde decoration support

---
 .../{xdg_decoration.rs => decoration.rs}      | 13 ++++++++++--
 src/wayland/mod.rs                            |  4 ++--
 src/wayland/state.rs                          | 20 ++++++++++++++-----
 src/wayland/xdg_shell.rs                      |  2 +-
 4 files changed, 29 insertions(+), 10 deletions(-)
 rename src/wayland/{xdg_decoration.rs => decoration.rs} (67%)

diff --git a/src/wayland/xdg_decoration.rs b/src/wayland/decoration.rs
similarity index 67%
rename from src/wayland/xdg_decoration.rs
rename to src/wayland/decoration.rs
index 78c632b..69380b3 100644
--- a/src/wayland/xdg_decoration.rs
+++ b/src/wayland/decoration.rs
@@ -1,8 +1,10 @@
 use super::state::WaylandState;
 use smithay::{
-	delegate_xdg_decoration,
+	delegate_kde_decoration, delegate_xdg_decoration,
 	reexports::wayland_protocols::xdg::decoration::zv1::server::zxdg_toplevel_decoration_v1::Mode,
-	wayland::shell::xdg::decoration::XdgDecorationHandler,
+	wayland::shell::{
+		self, kde::decoration::KdeDecorationHandler, xdg::decoration::XdgDecorationHandler,
+	},
 };
 
 impl XdgDecorationHandler for WaylandState {
@@ -23,3 +25,10 @@ impl XdgDecorationHandler for WaylandState {
 	fn unset_mode(&mut self, _toplevel: smithay::wayland::shell::xdg::ToplevelSurface) {}
 }
 delegate_xdg_decoration!(WaylandState);
+
+impl KdeDecorationHandler for WaylandState {
+	fn kde_decoration_state(&self) -> &shell::kde::decoration::KdeDecorationState {
+		&self.kde_decoration_state
+	}
+}
+delegate_kde_decoration!(WaylandState);
diff --git a/src/wayland/mod.rs b/src/wayland/mod.rs
index 53577da..278c6af 100644
--- a/src/wayland/mod.rs
+++ b/src/wayland/mod.rs
@@ -1,15 +1,15 @@
 pub mod compositor;
 mod data_device;
+pub mod decoration;
 pub mod panel_item;
 pub mod seat;
 pub mod shaders;
 pub mod state;
 pub mod surface;
-pub mod xdg_decoration;
 pub mod xdg_shell;
 
 use self::{panel_item::PanelItem, state::WaylandState, surface::CORE_SURFACES};
-use crate::wayland::{seat::SeatData, state::ClientState};
+use crate::wayland::state::ClientState;
 use anyhow::{ensure, Result};
 use once_cell::sync::OnceCell;
 use parking_lot::Mutex;
diff --git a/src/wayland/state.rs b/src/wayland/state.rs
index 584a4a1..6937548 100644
--- a/src/wayland/state.rs
+++ b/src/wayland/state.rs
@@ -5,17 +5,23 @@ use slog::Logger;
 use smithay::{
 	delegate_output, delegate_shm,
 	output::{Output, Scale, Subpixel},
-	reexports::wayland_server::{
-		backend::{ClientData, ClientId, DisconnectReason},
-		protocol::wl_data_device_manager::WlDataDeviceManager,
-		Display, DisplayHandle,
+	reexports::{
+		wayland_protocols_misc::server_decoration::server::org_kde_kwin_server_decoration_manager::Mode,
+		wayland_server::{
+			backend::{ClientData, ClientId, DisconnectReason},
+			protocol::wl_data_device_manager::WlDataDeviceManager,
+			Display, DisplayHandle,
+		},
 	},
 	utils::Size,
 	wayland::{
 		buffer::BufferHandler,
 		compositor::CompositorState,
 		output::OutputManagerState,
-		shell::xdg::{decoration::XdgDecorationState, XdgShellState},
+		shell::{
+			kde::decoration::KdeDecorationState,
+			xdg::{decoration::XdgDecorationState, XdgShellState},
+		},
 		shm::{ShmHandler, ShmState},
 	},
 };
@@ -42,6 +48,7 @@ pub struct WaylandState {
 	pub compositor_state: CompositorState,
 	pub xdg_shell_state: XdgShellState,
 	pub xdg_decoration_state: XdgDecorationState,
+	pub kde_decoration_state: KdeDecorationState,
 	pub shm_state: ShmState,
 	pub output_manager_state: OutputManagerState,
 	pub output: Output,
@@ -57,6 +64,8 @@ impl WaylandState {
 		let compositor_state = CompositorState::new::<Self, _>(&display_handle, log.clone());
 		let xdg_shell_state = XdgShellState::new::<Self, _>(&display_handle, log.clone());
 		let xdg_decoration_state = XdgDecorationState::new::<Self, _>(&display_handle, log.clone());
+		let kde_decoration_state =
+			KdeDecorationState::new::<Self, _>(&display_handle, Mode::Server, log.clone());
 		let shm_state = ShmState::new::<Self, _>(&display_handle, vec![], log.clone());
 		let output_manager_state = OutputManagerState::new_with_xdg_output::<Self>(&display_handle);
 		let output = Output::new(
@@ -82,6 +91,7 @@ impl WaylandState {
 			compositor_state,
 			xdg_shell_state,
 			xdg_decoration_state,
+			kde_decoration_state,
 			shm_state,
 			output_manager_state,
 			output,
diff --git a/src/wayland/xdg_shell.rs b/src/wayland/xdg_shell.rs
index 3f5ecbe..1d914fc 100644
--- a/src/wayland/xdg_shell.rs
+++ b/src/wayland/xdg_shell.rs
@@ -23,7 +23,7 @@ impl XdgShellHandler for WaylandState {
 		self.output
 			.enter(&self.display_handle, surface.wl_surface());
 		surface.with_pending_state(|state| {
-			state.states.set(State::Fullscreen);
+			state.states.set(State::Maximized);
 			state.states.set(State::Activated);
 			state.decoration_mode = Some(Mode::ServerSide);
 		});