feat: min_width + min_height and max_width + max_height window modifi…

…ers (#331)

crates/renderer/src/config.rs

@@ -11,6 +11,14 @@ pub struct WindowConfig<T: Clone> {
     pub width: f64,
     /// Height of the window.
     pub height: f64,
+    /// Minimum width of the Window.
+    pub min_width: Option<f64>,
+    /// Minimum height of the window.
+    pub min_height: Option<f64>,
+    /// Maximum width of the Window.
+    pub max_width: Option<f64>,
+    /// Maximum height of the window.
+    pub max_height: Option<f64>,
     /// Enable Window decorations.
     pub decorations: bool,
     /// Title for the Window.
@@ -29,17 +37,7 @@ pub struct WindowConfig<T: Clone> {
 
 impl<T: Clone> Default for WindowConfig<T> {
     fn default() -> Self {
-        Self {
-            width: 600.0,
-            height: 600.0,
-            decorations: true,
-            title: "Freya app",
-            transparent: false,
-            state: None,
-            background: Color::WHITE,
-            on_setup: None,
-            on_exit: None,
-        }
+        LaunchConfigBuilder::default().build().window
     }
 }
 
@@ -63,6 +61,10 @@ pub type WindowCallback = Arc<Box<fn(&mut Window)>>;
 pub struct LaunchConfigBuilder<'a, T> {
     pub width: f64,
     pub height: f64,
+    pub min_width: Option<f64>,
+    pub min_height: Option<f64>,
+    pub max_width: Option<f64>,
+    pub max_height: Option<f64>,
     pub decorations: bool,
     pub title: &'static str,
     pub transparent: bool,
@@ -76,8 +78,12 @@ pub struct LaunchConfigBuilder<'a, T> {
 impl<T> Default for LaunchConfigBuilder<'_, T> {
     fn default() -> Self {
         Self {
-            width: 350.0,
-            height: 350.0,
+            width: 600.0,
+            height: 600.0,
+            min_width: None,
+            min_height: None,
+            max_height: None,
+            max_width: None,
             decorations: true,
             title: "Freya app",
             transparent: false,
@@ -103,6 +109,30 @@ impl<'a, T: Clone> LaunchConfigBuilder<'a, T> {
         self
     }
 
+    /// Specify a minimum Window width.
+    pub fn with_min_width(mut self, min_width: f64) -> Self {
+        self.min_width = Some(min_width);
+        self
+    }
+
+    /// Specify a minimum Window height.
+    pub fn with_min_height(mut self, min_height: f64) -> Self {
+        self.min_height = Some(min_height);
+        self
+    }
+
+    /// Specify a maximum Window width.
+    pub fn with_max_width(mut self, max_width: f64) -> Self {
+        self.max_width = Some(max_width);
+        self
+    }
+
+    /// Specify a maximum Window height.
+    pub fn with_max_height(mut self, max_height: f64) -> Self {
+        self.max_height = Some(max_height);
+        self
+    }
+
     /// Whether the Window will have decorations or not.
     pub fn with_decorations(mut self, decorations: bool) -> Self {
         self.decorations = decorations;
@@ -157,6 +187,10 @@ impl<'a, T: Clone> LaunchConfigBuilder<'a, T> {
             window: WindowConfig {
                 width: self.width,
                 height: self.height,
+                min_width: self.min_width,
+                min_height: self.min_height,
+                max_width: self.max_width,
+                max_height: self.max_height,
                 title: self.title,
                 decorations: self.decorations,
                 transparent: self.transparent,

crates/renderer/src/window.rs

@@ -52,7 +52,7 @@ impl<T: Clone> WindowEnv<T> {
         window_config: WindowConfig<T>,
         event_loop: &EventLoop<EventMessage>,
     ) -> Self {
-        let window_builder = WindowBuilder::new()
+        let mut window_builder = WindowBuilder::new()
             .with_visible(false)
             .with_title(window_config.title)
             .with_decorations(window_config.decorations)
@@ -62,6 +62,14 @@ impl<T: Clone> WindowEnv<T> {
                 window_config.height,
             ));
 
+        if let Some(min_size) = window_config.min_width.zip(window_config.min_height) {
+            window_builder = window_builder.with_min_inner_size(LogicalSize::<f64>::from(min_size))
+        }
+
+        if let Some(max_size) = window_config.max_width.zip(window_config.max_height) {
+            window_builder = window_builder.with_max_inner_size(LogicalSize::<f64>::from(max_size))
+        }
+
         let template = ConfigTemplateBuilder::new()
             .with_alpha_size(8)
             .with_transparency(window_config.transparent);