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Diffstat (limited to 'winit/src/application/state.rs')
| -rw-r--r-- | winit/src/application/state.rs | 221 |
1 files changed, 0 insertions, 221 deletions
diff --git a/winit/src/application/state.rs b/winit/src/application/state.rs deleted file mode 100644 index a0a06933..00000000 --- a/winit/src/application/state.rs +++ /dev/null @@ -1,221 +0,0 @@ -use crate::application; -use crate::conversion; -use crate::core::mouse; -use crate::core::{Color, Size}; -use crate::graphics::Viewport; -use crate::runtime::Debug; -use crate::Application; - -use std::marker::PhantomData; -use winit::event::{Touch, WindowEvent}; -use winit::window::Window; - -/// The state of a windowed [`Application`]. -#[allow(missing_debug_implementations)] -pub struct State<A: Application> -where - A::Theme: application::DefaultStyle, -{ - title: String, - scale_factor: f64, - viewport: Viewport, - viewport_version: usize, - cursor_position: Option<winit::dpi::PhysicalPosition<f64>>, - modifiers: winit::keyboard::ModifiersState, - theme: A::Theme, - appearance: application::Appearance, - application: PhantomData<A>, -} - -impl<A: Application> State<A> -where - A::Theme: application::DefaultStyle, -{ - /// Creates a new [`State`] for the provided [`Application`] and window. - pub fn new(application: &A, window: &Window) -> Self { - let title = application.title(); - let scale_factor = application.scale_factor(); - let theme = application.theme(); - let appearance = application.style(&theme); - - let viewport = { - let physical_size = window.inner_size(); - - Viewport::with_physical_size( - Size::new(physical_size.width, physical_size.height), - window.scale_factor() * scale_factor, - ) - }; - - Self { - title, - scale_factor, - viewport, - viewport_version: 0, - cursor_position: None, - modifiers: winit::keyboard::ModifiersState::default(), - theme, - appearance, - application: PhantomData, - } - } - - /// Returns the current [`Viewport`] of the [`State`]. - pub fn viewport(&self) -> &Viewport { - &self.viewport - } - - /// Returns the version of the [`Viewport`] of the [`State`]. - /// - /// The version is incremented every time the [`Viewport`] changes. - pub fn viewport_version(&self) -> usize { - self.viewport_version - } - - /// Returns the physical [`Size`] of the [`Viewport`] of the [`State`]. - pub fn physical_size(&self) -> Size<u32> { - self.viewport.physical_size() - } - - /// Returns the logical [`Size`] of the [`Viewport`] of the [`State`]. - pub fn logical_size(&self) -> Size<f32> { - self.viewport.logical_size() - } - - /// Returns the current scale factor of the [`Viewport`] of the [`State`]. - pub fn scale_factor(&self) -> f64 { - self.viewport.scale_factor() - } - - /// Returns the current cursor position of the [`State`]. - pub fn cursor(&self) -> mouse::Cursor { - self.cursor_position - .map(|cursor_position| { - conversion::cursor_position( - cursor_position, - self.viewport.scale_factor(), - ) - }) - .map(mouse::Cursor::Available) - .unwrap_or(mouse::Cursor::Unavailable) - } - - /// Returns the current keyboard modifiers of the [`State`]. - pub fn modifiers(&self) -> winit::keyboard::ModifiersState { - self.modifiers - } - - /// Returns the current theme of the [`State`]. - pub fn theme(&self) -> &A::Theme { - &self.theme - } - - /// Returns the current background [`Color`] of the [`State`]. - pub fn background_color(&self) -> Color { - self.appearance.background_color - } - - /// Returns the current text [`Color`] of the [`State`]. - pub fn text_color(&self) -> Color { - self.appearance.text_color - } - - /// Processes the provided window event and updates the [`State`] - /// accordingly. - pub fn update( - &mut self, - window: &Window, - event: &WindowEvent, - _debug: &mut Debug, - ) { - match event { - WindowEvent::Resized(new_size) => { - let size = Size::new(new_size.width, new_size.height); - - self.viewport = Viewport::with_physical_size( - size, - window.scale_factor() * self.scale_factor, - ); - - self.viewport_version = self.viewport_version.wrapping_add(1); - } - WindowEvent::ScaleFactorChanged { - scale_factor: new_scale_factor, - .. - } => { - let size = self.viewport.physical_size(); - - self.viewport = Viewport::with_physical_size( - size, - new_scale_factor * self.scale_factor, - ); - - self.viewport_version = self.viewport_version.wrapping_add(1); - } - WindowEvent::CursorMoved { position, .. } - | WindowEvent::Touch(Touch { - location: position, .. - }) => { - self.cursor_position = Some(*position); - } - WindowEvent::CursorLeft { .. } => { - self.cursor_position = None; - } - WindowEvent::ModifiersChanged(new_modifiers) => { - self.modifiers = new_modifiers.state(); - } - #[cfg(feature = "debug")] - WindowEvent::KeyboardInput { - event: - winit::event::KeyEvent { - logical_key: - winit::keyboard::Key::Named( - winit::keyboard::NamedKey::F12, - ), - state: winit::event::ElementState::Pressed, - .. - }, - .. - } => _debug.toggle(), - _ => {} - } - } - - /// Synchronizes the [`State`] with its [`Application`] and its respective - /// window. - /// - /// Normally an [`Application`] should be synchronized with its [`State`] - /// and window after calling [`crate::application::update`]. - pub fn synchronize(&mut self, application: &A, window: &Window) { - // Update window title - let new_title = application.title(); - - if self.title != new_title { - window.set_title(&new_title); - - self.title = new_title; - } - - // Update scale factor and size - let new_scale_factor = application.scale_factor(); - let new_size = window.inner_size(); - let current_size = self.viewport.physical_size(); - - if self.scale_factor != new_scale_factor - || (current_size.width, current_size.height) - != (new_size.width, new_size.height) - { - self.viewport = Viewport::with_physical_size( - Size::new(new_size.width, new_size.height), - window.scale_factor() * new_scale_factor, - ); - self.viewport_version = self.viewport_version.wrapping_add(1); - - self.scale_factor = new_scale_factor; - } - - // Update theme and appearance - self.theme = application.theme(); - self.appearance = application.style(&self.theme); - } -} |