feat: split min/max size constraints (#759)

* feat: split min/max size constraints, closes #138

* windows impl

* linux impl

* fix linux impl

* cleanup linux impl

* macOS impl

* imports

* ios build

* macos build

* unsafe

* merge `set_min/max_width/height` into a single function

* fix macos build

* macos again

* use macros to generate DPI types

ref: rust-windowing/winit#2148

* fix windows impl

* fmt

Author: amrbashir

examples/min_max_size.rs

@@ -3,31 +3,76 @@
 // SPDX-License-Identifier: Apache-2.0
 
 use tao::{
-  dpi::LogicalSize,
-  event::{Event, WindowEvent},
+  dpi::LogicalPixel,
+  event::{ElementState, Event, KeyEvent, WindowEvent},
   event_loop::{ControlFlow, EventLoop},
-  window::WindowBuilder,
+  keyboard::Key,
+  window::{WindowBuilder, WindowSizeConstraints},
 };
 
 #[allow(clippy::single_match)]
 fn main() {
   env_logger::init();
   let event_loop = EventLoop::new();
 
+  let min_width = 400.0;
+  let max_width = 800.0;
+  let min_height = 200.0;
+  let max_height = 400.0;
+  let mut size_constraints = WindowSizeConstraints::default();
+
   let window = WindowBuilder::new().build(&event_loop).unwrap();
 
-  window.set_min_inner_size(Some(LogicalSize::new(400.0, 200.0)));
-  window.set_max_inner_size(Some(LogicalSize::new(800.0, 400.0)));
+  eprintln!("constraint keys:");
+  eprintln!("  (E) Toggle the min width");
+  eprintln!("  (F) Toggle the max width");
+  eprintln!("  (P) Toggle the min height");
+  eprintln!("  (V) Toggle the max height");
 
   event_loop.run(move |event, _, control_flow| {
     *control_flow = ControlFlow::Wait;
-    println!("{:?}", event);
 
     match event {
       Event::WindowEvent {
         event: WindowEvent::CloseRequested,
         ..
       } => *control_flow = ControlFlow::Exit,
+
+      Event::WindowEvent {
+        event:
+          WindowEvent::KeyboardInput {
+            event:
+              KeyEvent {
+                logical_key: Key::Character(key_str),
+                state: ElementState::Released,
+                ..
+              },
+            ..
+          },
+        ..
+      } => match key_str {
+        "e" => {
+          size_constraints.min_width =
+            (!size_constraints.min_width.is_some()).then_some(LogicalPixel::new(min_width).into());
+          window.set_inner_size_constraints(size_constraints);
+        }
+        "f" => {
+          size_constraints.max_width =
+            (!size_constraints.max_width.is_some()).then_some(LogicalPixel::new(max_width).into());
+          window.set_inner_size_constraints(size_constraints);
+        }
+        "p" => {
+          size_constraints.min_height = (!size_constraints.min_height.is_some())
+            .then_some(LogicalPixel::new(min_height).into());
+          window.set_inner_size_constraints(size_constraints);
+        }
+        "v" => {
+          size_constraints.max_height = (!size_constraints.max_height.is_some())
+            .then_some(LogicalPixel::new(max_height).into());
+          window.set_inner_size_constraints(size_constraints);
+        }
+        _ => {}
+      },
       _ => (),
     }
   });