window tasks for setting min and max size

2 files changed, 36 insertions, 0 deletions

diff --git a/runtime/src/window.rs b/runtime/src/window.rs
index b5c6ee50..598ee491 100644
--- a/runtime/src/window.rs
+++ b/runtime/src/window.rs
@@ -158,6 +158,12 @@ pub enum Action {
     /// This enables mouse events for the window and stops mouse events
     /// from being passed to whatever is underneath.
     DisableMousePassthrough(Id),
+
+    /// Set the minimum inner window size.
+    SetMinSize(Id, Option<Size>),
+
+    /// Set the maximum inner window size.
+    SetMaxSize(Id, Option<Size>),
 }
 
 /// Subscribes to the frames of the window of the running application.
@@ -376,6 +382,16 @@ pub fn change_title<T>(id: Id, title: String) -> Task<T> {
     task::effect(crate::Action::Window(Action::ChangeTitle(id, title)))
 }
 
+/// Set the inner maximum size of the window.
+pub fn set_max_size<T>(id: Id, size: Option<Size>) -> Task<T> {
+    task::effect(crate::Action::Window(Action::SetMaxSize(id, size)))
+}
+
+/// Set the inner minimum size of the window.
+pub fn set_min_size<T>(id: Id, size: Option<Size>) -> Task<T> {
+    task::effect(crate::Action::Window(Action::SetMinSize(id, size)))
+}
+
 /// Show the [system menu] at cursor position.
 ///
 /// [system menu]: https://en.wikipedia.org/wiki/Common_menus_in_Microsoft_Windows#System_menu
diff --git a/winit/src/program.rs b/winit/src/program.rs
index 052b36b0..58fec9df 100644
--- a/winit/src/program.rs
+++ b/winit/src/program.rs
@@ -1291,6 +1291,26 @@ fn run_action<P, C>(
                     );
                 }
             }
+            window::Action::SetMinSize(id, size) => {
+                if let Some(window) = window_manager.get_mut(id) {
+                    window.raw.set_min_inner_size(size.map(|x| {
+                        winit::dpi::LogicalSize {
+                            width: x.width,
+                            height: x.height,
+                        }
+                    }));
+                }
+            }
+            window::Action::SetMaxSize(id, size) => {
+                if let Some(window) = window_manager.get_mut(id) {
+                    window.raw.set_max_inner_size(size.map(|x| {
+                        winit::dpi::LogicalSize {
+                            width: x.width,
+                            height: x.height,
+                        }
+                    }));
+                }
+            }
             window::Action::ChangeTitle(id, title) => {
                 if let Some(window) = window_manager.get_mut(id) {
                     window.raw.set_title(&title);