2 files changed, 17 insertions, 0 deletions
diff --git a/runtime/src/window.rs b/runtime/src/window.rs
index d4111293..9b66cb0e 100644
--- a/runtime/src/window.rs
+++ b/runtime/src/window.rs
@@ -7,6 +7,7 @@ use crate::command::{self, Command};
 use crate::core::time::Instant;
 use crate::core::window::{Event, Icon, Level, Mode, UserAttention};
 use crate::futures::subscription::{self, Subscription};
+use crate::screenshot::Screenshot;
 
 /// Subscribes to the frames of the window of the running application.
 ///
@@ -115,3 +116,10 @@ pub fn fetch_id<Message>(
 pub fn change_icon<Message>(icon: Icon) -> Command<Message> {
     Command::single(command::Action::Window(Action::ChangeIcon(icon)))
 }
+
+/// Captures a [`Screenshot`] from the window.
+pub fn screenshot<Message>(
+    f: impl FnOnce(Screenshot) -> Message + Send + 'static,
+) -> Command<Message> {
+    Command::single(command::Action::Window(Action::Screenshot(Box::new(f))))
+}
diff --git a/runtime/src/window/action.rs b/runtime/src/window/action.rs
index a9d2a3d0..cb430681 100644
--- a/runtime/src/window/action.rs
+++ b/runtime/src/window/action.rs
@@ -1,6 +1,7 @@
 use crate::core::window::{Icon, Level, Mode, UserAttention};
 use crate::futures::MaybeSend;
 
+use crate::screenshot::Screenshot;
 use std::fmt;
 
 /// An operation to be performed on some window.
@@ -89,6 +90,8 @@ pub enum Action<T> {
     /// - **X11:** Has no universal guidelines for icon sizes, so you're at the whims of the WM. That
     ///   said, it's usually in the same ballpark as on Windows.
     ChangeIcon(Icon),
+    /// Screenshot the viewport of the window.
+    Screenshot(Box<dyn FnOnce(Screenshot) -> T + 'static>),
 }
 
 impl<T> Action<T> {
@@ -118,6 +121,11 @@ impl<T> Action<T> {
             Self::ChangeLevel(level) => Action::ChangeLevel(level),
             Self::FetchId(o) => Action::FetchId(Box::new(move |s| f(o(s)))),
             Self::ChangeIcon(icon) => Action::ChangeIcon(icon),
+            Self::Screenshot(tag) => {
+                Action::Screenshot(Box::new(move |screenshot| {
+                    f(tag(screenshot))
+                }))
+            }
         }
     }
 }
@@ -155,6 +163,7 @@ impl<T> fmt::Debug for Action<T> {
             Self::ChangeIcon(_icon) => {
                 write!(f, "Action::ChangeIcon(icon)")
             }
+            Self::Screenshot(_) => write!(f, "Action::Screenshot"),
         }
     }
 }