Merge pull request #35 from hecrj/feature/scrollables

Scrollable widget

1 files changed, 32 insertions, 1 deletions

diff --git a/winit/src/application.rs b/winit/src/application.rs
index 418ee3c4..c8748199 100644
--- a/winit/src/application.rs
+++ b/winit/src/application.rs
@@ -68,7 +68,8 @@ pub trait Application {
                     &renderer,
                 );
 
-                let messages = user_interface.update(events.drain(..));
+                let messages =
+                    user_interface.update(&renderer, events.drain(..));
 
                 if messages.is_empty() {
                     primitive = user_interface.draw(&mut renderer);
@@ -122,6 +123,7 @@ pub trait Application {
                 ..
             } => match window_event {
                 WindowEvent::CursorMoved { position, .. } => {
+                    // TODO: Remove when renderer supports HiDPI
                     let physical_position =
                         position.to_physical(window.hidpi_factor());
 
@@ -136,6 +138,35 @@ pub trait Application {
                         state: conversion::button_state(state),
                     }));
                 }
+                WindowEvent::MouseWheel { delta, .. } => match delta {
+                    winit::event::MouseScrollDelta::LineDelta(
+                        delta_x,
+                        delta_y,
+                    ) => {
+                        events.push(Event::Mouse(
+                            mouse::Event::WheelScrolled {
+                                delta: mouse::ScrollDelta::Lines {
+                                    x: delta_x,
+                                    y: delta_y,
+                                },
+                            },
+                        ));
+                    }
+                    winit::event::MouseScrollDelta::PixelDelta(position) => {
+                        // TODO: Remove when renderer supports HiDPI
+                        let physical_position =
+                            position.to_physical(window.hidpi_factor());
+
+                        events.push(Event::Mouse(
+                            mouse::Event::WheelScrolled {
+                                delta: mouse::ScrollDelta::Pixels {
+                                    x: physical_position.x as f32,
+                                    y: physical_position.y as f32,
+                                },
+                            },
+                        ));
+                    }
+                },
                 WindowEvent::CloseRequested => {
                     *control_flow = ControlFlow::Exit;
                 }