Add window resizing for X11

src/window.rs

@@ -4,6 +4,7 @@ use raw_window_handle::{HasRawWindowHandle, RawWindowHandle};
 
 use crate::event::{Event, EventStatus};
 use crate::window_open_options::WindowOpenOptions;
+use crate::Size;
 
 #[cfg(target_os = "macos")]
 use crate::macos as platform;
@@ -98,6 +99,16 @@ impl<'a> Window<'a> {
         self.window.close();
     }
 
+    /// Resize the window to the given size.
+    ///
+    /// # TODO
+    ///
+    /// This is currently only supported on Linux.
+    #[cfg(target_os = "linux")]
+    pub fn resize(&mut self, size: Size) {
+        self.window.resize(size);
+    }
+
     /// If provided, then an OpenGL context will be created for this window. You'll be able to
     /// access this context through [crate::Window::gl_context].
     #[cfg(feature = "opengl")]

src/x11/window.rs

@@ -12,7 +12,7 @@ use xcb::StructPtr;
 
 use super::XcbConnection;
 use crate::{
-    Event, MouseButton, MouseCursor, MouseEvent, PhyPoint, PhySize, ScrollDelta, WindowEvent,
+    Event, MouseButton, MouseCursor, MouseEvent, PhyPoint, PhySize, ScrollDelta, Size, WindowEvent,
     WindowHandler, WindowInfo, WindowOpenOptions, WindowScalePolicy,
 };
 
@@ -389,6 +389,18 @@ impl Window {
         self.close_requested = true;
     }
 
+    pub fn resize(&mut self, size: Size) {
+        xcb::configure_window(
+            &self.xcb_connection.conn,
+            self.window_id,
+            &[
+                (xcb::CONFIG_WINDOW_WIDTH as u16, size.width.round() as u32),
+                (xcb::CONFIG_WINDOW_HEIGHT as u16, size.height.round() as u32),
+            ],
+        );
+        self.xcb_connection.conn.flush();
+    }
+
     #[cfg(feature = "opengl")]
     pub fn gl_context(&self) -> Option<&crate::gl::GlContext> {
         self.gl_context.as_ref()