Remove `window::Mode` and introduce `Settings::visible`

Additionally, only show the window once one frame has been rendered to avoid blank flashes on Windows.

11 files changed, 52 insertions, 121 deletions

diff --git a/glutin/src/application.rs b/glutin/src/application.rs
index 24f315fb..054cf839 100644
--- a/glutin/src/application.rs
+++ b/glutin/src/application.rs
@@ -54,13 +54,17 @@ where
         runtime.enter(|| A::new(flags))
     };
 
+    let should_be_visible = settings.window.visible;
+
     let context = {
-        let builder = settings.window.into_builder(
-            &application.title(),
-            application.mode(),
-            event_loop.primary_monitor(),
-            settings.id,
-        );
+        let builder = settings
+            .window
+            .into_builder(
+                &application.title(),
+                event_loop.primary_monitor(),
+                settings.id,
+            )
+            .with_visible(false);
 
         log::info!("Window builder: {:#?}", builder);
 
@@ -135,6 +139,7 @@ where
         receiver,
         context,
         init_command,
+        should_be_visible,
         settings.exit_on_close_request,
     ));
 
@@ -187,6 +192,7 @@ async fn run_instance<A, E, C>(
     mut receiver: mpsc::UnboundedReceiver<glutin::event::Event<'_, A::Message>>,
     mut context: glutin::ContextWrapper<glutin::PossiblyCurrent, Window>,
     init_command: Command<A::Message>,
+    should_be_visible: bool,
     exit_on_close_request: bool,
 ) where
     A: Application + 'static,
@@ -200,6 +206,7 @@ async fn run_instance<A, E, C>(
     let mut clipboard = Clipboard::connect(context.window());
     let mut cache = user_interface::Cache::default();
     let mut state = application::State::new(&application, context.window());
+    let mut visible = false;
     let mut viewport_version = state.viewport_version();
 
     application::run_command(
@@ -399,6 +406,12 @@ async fn run_instance<A, E, C>(
 
                 debug.render_finished();
 
+                if !visible && should_be_visible {
+                    context.window().set_visible(true);
+
+                    visible = true;
+                }
+
                 // TODO: Handle animations!
                 // Maybe we can use `ControlFlow::WaitUntil` for this.
             }
diff --git a/src/application.rs b/src/application.rs
index 58d4a577..23ce034e 100644
--- a/src/application.rs
+++ b/src/application.rs
@@ -1,5 +1,4 @@
 //! Build interactive cross-platform applications.
-use crate::window;
 use crate::{Command, Element, Executor, Settings, Subscription};
 
 pub use iced_native::application::{Appearance, StyleSheet};
@@ -169,18 +168,6 @@ pub trait Application: Sized {
         Subscription::none()
     }
 
-    /// Returns the current [`Application`] mode.
-    ///
-    /// The runtime will automatically transition your application if a new mode
-    /// is returned.
-    ///
-    /// Currently, the mode only has an effect in native platforms.
-    ///
-    /// By default, an application will run in windowed mode.
-    fn mode(&self) -> window::Mode {
-        window::Mode::Windowed
-    }
-
     /// Returns the scale factor of the [`Application`].
     ///
     /// It can be used to dynamically control the size of the UI at runtime
@@ -277,14 +264,6 @@ where
         self.0.style()
     }
 
-    fn mode(&self) -> iced_winit::Mode {
-        match self.0.mode() {
-            window::Mode::Windowed => iced_winit::Mode::Windowed,
-            window::Mode::Fullscreen => iced_winit::Mode::Fullscreen,
-            window::Mode::Hidden => iced_winit::Mode::Hidden,
-        }
-    }
-
     fn subscription(&self) -> Subscription<Self::Message> {
         self.0.subscription()
     }
diff --git a/src/window.rs b/src/window.rs
index 71158816..eb5e17a6 100644
--- a/src/window.rs
+++ b/src/window.rs
@@ -1,12 +1,10 @@
 //! Configure the window of your application in native platforms.
-mod mode;
 mod position;
 mod settings;
 
 pub mod icon;
 
 pub use icon::Icon;
-pub use mode::Mode;
 pub use position::Position;
 pub use settings::Settings;
 
diff --git a/src/window/mode.rs b/src/window/mode.rs
deleted file mode 100644
index fdce8e23..00000000
--- a/src/window/mode.rs
+++ /dev/null
@@ -1,12 +0,0 @@
-/// The mode of a window-based application.
-#[derive(Debug, Clone, Copy, PartialEq, Eq)]
-pub enum Mode {
-    /// The application appears in its own window.
-    Windowed,
-
-    /// The application takes the whole screen of its current monitor.
-    Fullscreen,
-
-    /// The application is hidden
-    Hidden,
-}
diff --git a/src/window/settings.rs b/src/window/settings.rs
index 8e32f4fb..24d0f4f9 100644
--- a/src/window/settings.rs
+++ b/src/window/settings.rs
@@ -15,6 +15,9 @@ pub struct Settings {
     /// The maximum size of the window.
     pub max_size: Option<(u32, u32)>,
 
+    /// Whether the window should be visible or not.
+    pub visible: bool,
+
     /// Whether the window should be resizable or not.
     pub resizable: bool,
 
@@ -38,6 +41,7 @@ impl Default for Settings {
             position: Position::default(),
             min_size: None,
             max_size: None,
+            visible: true,
             resizable: true,
             decorations: true,
             transparent: false,
@@ -54,6 +58,7 @@ impl From<Settings> for iced_winit::settings::Window {
             position: iced_winit::Position::from(settings.position),
             min_size: settings.min_size,
             max_size: settings.max_size,
+            visible: settings.visible,
             resizable: settings.resizable,
             decorations: settings.decorations,
             transparent: settings.transparent,
diff --git a/winit/src/application.rs b/winit/src/application.rs
index 3a5c3dac..23364209 100644
--- a/winit/src/application.rs
+++ b/winit/src/application.rs
@@ -9,7 +9,7 @@ use crate::mouse;
 use crate::renderer;
 use crate::widget::operation;
 use crate::{
-    Command, Debug, Error, Executor, Mode, Proxy, Runtime, Settings, Size,
+    Command, Debug, Error, Executor, Proxy, Runtime, Settings, Size,
     Subscription,
 };
 
@@ -81,16 +81,6 @@ where
         Subscription::none()
     }
 
-    /// Returns the current [`Application`] mode.
-    ///
-    /// The runtime will automatically transition your application if a new mode
-    /// is returned.
-    ///
-    /// By default, an application will run in windowed mode.
-    fn mode(&self) -> Mode {
-        Mode::Windowed
-    }
-
     /// Returns the scale factor of the [`Application`].
     ///
     /// It can be used to dynamically control the size of the UI at runtime
@@ -147,12 +137,15 @@ where
         runtime.enter(|| A::new(flags))
     };
 
-    let builder = settings.window.into_builder(
-        &application.title(),
-        application.mode(),
-        event_loop.primary_monitor(),
-        settings.id,
-    );
+    let should_be_visible = settings.window.visible;
+    let builder = settings
+        .window
+        .into_builder(
+            &application.title(),
+            event_loop.primary_monitor(),
+            settings.id,
+        )
+        .with_visible(false);
 
     log::info!("Window builder: {:#?}", builder);
 
@@ -189,6 +182,7 @@ where
         receiver,
         init_command,
         window,
+        should_be_visible,
         settings.exit_on_close_request,
     ));
 
@@ -239,6 +233,7 @@ async fn run_instance<A, E, C>(
     mut receiver: mpsc::UnboundedReceiver<winit::event::Event<'_, A::Message>>,
     init_command: Command<A::Message>,
     window: winit::window::Window,
+    should_be_visible: bool,
     exit_on_close_request: bool,
 ) where
     A: Application + 'static,
@@ -252,6 +247,7 @@ async fn run_instance<A, E, C>(
     let mut clipboard = Clipboard::connect(&window);
     let mut cache = user_interface::Cache::default();
     let mut surface = compositor.create_surface(&window);
+    let mut visible = false;
 
     let mut state = State::new(&application, &window);
     let mut viewport_version = state.viewport_version();
@@ -383,6 +379,7 @@ async fn run_instance<A, E, C>(
                 event::MacOS::ReceivedUrl(url),
             )) => {
                 use iced_native::event;
+
                 events.push(iced_native::Event::PlatformSpecific(
                     event::PlatformSpecific::MacOS(event::MacOS::ReceivedUrl(
                         url,
@@ -450,6 +447,12 @@ async fn run_instance<A, E, C>(
                     Ok(()) => {
                         debug.render_finished();
 
+                        if !visible && should_be_visible {
+                            window.set_visible(true);
+
+                            visible = true;
+                        }
+
                         // TODO: Handle animations!
                         // Maybe we can use `ControlFlow::WaitUntil` for this.
                     }
diff --git a/winit/src/application/state.rs b/winit/src/application/state.rs
index 6b843919..5e953cb5 100644
--- a/winit/src/application/state.rs
+++ b/winit/src/application/state.rs
@@ -1,6 +1,6 @@
 use crate::application::{self, StyleSheet as _};
 use crate::conversion;
-use crate::{Application, Color, Debug, Mode, Point, Size, Viewport};
+use crate::{Application, Color, Debug, Point, Size, Viewport};
 
 use std::marker::PhantomData;
 use winit::event::{Touch, WindowEvent};
@@ -13,7 +13,6 @@ where
     <A::Renderer as crate::Renderer>::Theme: application::StyleSheet,
 {
     title: String,
-    mode: Mode,
     scale_factor: f64,
     viewport: Viewport,
     viewport_version: usize,
@@ -31,7 +30,6 @@ where
     /// Creates a new [`State`] for the provided [`Application`] and window.
     pub fn new(application: &A, window: &Window) -> Self {
         let title = application.title();
-        let mode = application.mode();
         let scale_factor = application.scale_factor();
         let theme = application.theme();
         let appearance = theme.appearance(application.style());
@@ -47,7 +45,6 @@ where
 
         Self {
             title,
-            mode,
             scale_factor,
             viewport,
             viewport_version: 0,
@@ -193,20 +190,6 @@ where
             self.title = new_title;
         }
 
-        // Update window mode
-        let new_mode = application.mode();
-
-        if self.mode != new_mode {
-            window.set_fullscreen(conversion::fullscreen(
-                window.current_monitor(),
-                new_mode,
-            ));
-
-            window.set_visible(conversion::visible(new_mode));
-
-            self.mode = new_mode;
-        }
-
         // Update scale factor
         let new_scale_factor = application.scale_factor();
 
diff --git a/winit/src/conversion.rs b/winit/src/conversion.rs
index 74f6f7a0..05c9746e 100644
--- a/winit/src/conversion.rs
+++ b/winit/src/conversion.rs
@@ -6,7 +6,7 @@ use crate::keyboard;
 use crate::mouse;
 use crate::touch;
 use crate::window;
-use crate::{Event, Mode, Point, Position};
+use crate::{Event, Point, Position};
 
 /// Converts a winit window event into an iced event.
 pub fn window_event(
@@ -182,29 +182,6 @@ pub fn position(
     }
 }
 
-/// Converts a [`Mode`] to a [`winit`] fullscreen mode.
-///
-/// [`winit`]: https://github.com/rust-windowing/winit
-pub fn fullscreen(
-    monitor: Option<winit::monitor::MonitorHandle>,
-    mode: Mode,
-) -> Option<winit::window::Fullscreen> {
-    match mode {
-        Mode::Windowed | Mode::Hidden => None,
-        Mode::Fullscreen => {
-            Some(winit::window::Fullscreen::Borderless(monitor))
-        }
-    }
-}
-
-/// Converts a [`Mode`] to a visibility flag.
-pub fn visible(mode: Mode) -> bool {
-    match mode {
-        Mode::Windowed | Mode::Fullscreen => true,
-        Mode::Hidden => false,
-    }
-}
-
 /// Converts a `MouseCursor` from [`iced_native`] to a [`winit`] cursor icon.
 ///
 /// [`winit`]: https://github.com/rust-windowing/winit
diff --git a/winit/src/lib.rs b/winit/src/lib.rs
index 3bde0f2b..e32cc9af 100644
--- a/winit/src/lib.rs
+++ b/winit/src/lib.rs
@@ -45,14 +45,12 @@ pub mod window;
 pub mod system;
 
 mod error;
-mod mode;
 mod position;
 mod proxy;
 
 pub use application::Application;
 pub use clipboard::Clipboard;
 pub use error::Error;
-pub use mode::Mode;
 pub use position::Position;
 pub use proxy::Proxy;
 pub use settings::Settings;
diff --git a/winit/src/mode.rs b/winit/src/mode.rs
deleted file mode 100644
index fdce8e23..00000000
--- a/winit/src/mode.rs
+++ /dev/null
@@ -1,12 +0,0 @@
-/// The mode of a window-based application.
-#[derive(Debug, Clone, Copy, PartialEq, Eq)]
-pub enum Mode {
-    /// The application appears in its own window.
-    Windowed,
-
-    /// The application takes the whole screen of its current monitor.
-    Fullscreen,
-
-    /// The application is hidden
-    Hidden,
-}
diff --git a/winit/src/settings.rs b/winit/src/settings.rs
index 213ef47f..7175b9ed 100644
--- a/winit/src/settings.rs
+++ b/winit/src/settings.rs
@@ -14,7 +14,7 @@ mod platform;
 pub use platform::PlatformSpecific;
 
 use crate::conversion;
-use crate::{Mode, Position};
+use crate::Position;
 use winit::monitor::MonitorHandle;
 use winit::window::WindowBuilder;
 
@@ -65,6 +65,9 @@ pub struct Window {
     /// The maximum size of the window.
     pub max_size: Option<(u32, u32)>,
 
+    /// Whether the window should be visible or not.
+    pub visible: bool,
+
     /// Whether the window should be resizable or not.
     pub resizable: bool,
 
@@ -89,7 +92,6 @@ impl Window {
     pub fn into_builder(
         self,
         title: &str,
-        mode: Mode,
         primary_monitor: Option<MonitorHandle>,
         _id: Option<String>,
     ) -> WindowBuilder {
@@ -104,8 +106,7 @@ impl Window {
             .with_decorations(self.decorations)
             .with_transparent(self.transparent)
             .with_window_icon(self.icon)
-            .with_always_on_top(self.always_on_top)
-            .with_visible(conversion::visible(mode));
+            .with_always_on_top(self.always_on_top);
 
         if let Some(position) = conversion::position(
             primary_monitor.as_ref(),
@@ -166,9 +167,6 @@ impl Window {
                 );
         }
 
-        window_builder = window_builder
-            .with_fullscreen(conversion::fullscreen(primary_monitor, mode));
-
         window_builder
     }
 }
@@ -180,6 +178,7 @@ impl Default for Window {
             position: Position::default(),
             min_size: None,
             max_size: None,
+            visible: true,
             resizable: true,
             decorations: true,
             transparent: false,