win_fix_multi_tab: send monitor ready on clipboard is ready

Signed-off-by: fufesou <shuanglongchen@yeah.net>

libs/clipboard/src/context_send.rs

@@ -0,0 +1,60 @@
+use crate::cliprdr::*;
+use hbb_common::log;
+use std::sync::Mutex;
+
+#[cfg(windows)]
+lazy_static::lazy_static! {
+    static ref CONTEXT_SEND: ContextSend = ContextSend{addr: Mutex::new(0)};
+}
+
+pub struct ContextSend {
+    addr: Mutex<u64>,
+}
+
+impl ContextSend {
+    pub fn is_enabled() -> bool {
+        *CONTEXT_SEND.addr.lock().unwrap() != 0
+    }
+
+    pub fn enable(enabled: bool) {
+        let mut lock = CONTEXT_SEND.addr.lock().unwrap();
+        if enabled {
+            if *lock == 0 {
+                match crate::create_cliprdr_context(true, false, crate::ProcessSide::ClientSide) {
+                    Ok(context) => {
+                        log::info!("clipboard context for file transfer created.");
+                        *lock = Box::into_raw(context) as _;
+                    }
+                    Err(err) => {
+                        log::error!(
+                            "Create clipboard context for file transfer: {}",
+                            err.to_string()
+                        );
+                    }
+                }
+            }
+        } else {
+            if *lock != 0 {
+                unsafe {
+                    let _ = Box::from_raw(*lock as *mut CliprdrClientContext);
+                }
+                log::info!("clipboard context for file transfer destroyed.");
+                *lock = 0;
+            }
+        }
+    }
+
+    pub fn proc<F: FnOnce(&mut Box<CliprdrClientContext>) -> u32>(f: F) -> u32 {
+        let mut lock = CONTEXT_SEND.addr.lock().unwrap();
+        if *lock != 0 {
+            unsafe {
+                let mut context = Box::from_raw(*lock as *mut CliprdrClientContext);
+                let res = f(&mut context);
+                *lock = Box::into_raw(context) as _;
+                res
+            }
+        } else {
+            0
+        }
+    }
+}

libs/clipboard/src/lib.rs

@@ -16,6 +16,8 @@ use std::{
 };
 
 pub mod cliprdr;
+pub mod context_send;
+pub use context_send::*;
 
 #[derive(Debug, Serialize, Deserialize, Clone)]
 #[serde(tag = "t", content = "c")]