diff options
Diffstat (limited to 'winit/src/program')
| -rw-r--r-- | winit/src/program/state.rs | 239 | ||||
| -rw-r--r-- | winit/src/program/window_manager.rs | 157 |
2 files changed, 396 insertions, 0 deletions
diff --git a/winit/src/program/state.rs b/winit/src/program/state.rs new file mode 100644 index 00000000..a7fa2788 --- /dev/null +++ b/winit/src/program/state.rs @@ -0,0 +1,239 @@ +use crate::conversion; +use crate::core::{mouse, window}; +use crate::core::{Color, Size}; +use crate::graphics::Viewport; +use crate::program::{self, Program}; +use std::fmt::{Debug, Formatter}; + +use winit::event::{Touch, WindowEvent}; +use winit::window::Window; + +/// The state of a multi-windowed [`Program`]. +pub struct State<P: Program> +where + P::Theme: program::DefaultStyle, +{ + title: String, + scale_factor: f64, + viewport: Viewport, + viewport_version: u64, + cursor_position: Option<winit::dpi::PhysicalPosition<f64>>, + modifiers: winit::keyboard::ModifiersState, + theme: P::Theme, + appearance: program::Appearance, +} + +impl<P: Program> Debug for State<P> +where + P::Theme: program::DefaultStyle, +{ + fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result { + f.debug_struct("multi_window::State") + .field("title", &self.title) + .field("scale_factor", &self.scale_factor) + .field("viewport", &self.viewport) + .field("viewport_version", &self.viewport_version) + .field("cursor_position", &self.cursor_position) + .field("appearance", &self.appearance) + .finish() + } +} + +impl<P: Program> State<P> +where + P::Theme: program::DefaultStyle, +{ + /// Creates a new [`State`] for the provided [`Program`]'s `window`. + pub fn new( + application: &P, + window_id: window::Id, + window: &Window, + ) -> Self { + let title = application.title(window_id); + let scale_factor = application.scale_factor(window_id); + let theme = application.theme(window_id); + 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, + } + } + + /// 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) -> u64 { + 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) -> &P::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 crate::runtime::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 [`Program`] and its respective + /// window. + /// + /// Normally, a [`Program`] should be synchronized with its [`State`] + /// and window after calling [`State::update`]. + pub fn synchronize( + &mut self, + application: &P, + window_id: window::Id, + window: &Window, + ) { + // Update window title + let new_title = application.title(window_id); + + 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(window_id); + 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(window_id); + self.appearance = application.style(&self.theme); + } +} diff --git a/winit/src/program/window_manager.rs b/winit/src/program/window_manager.rs new file mode 100644 index 00000000..fcbf79f6 --- /dev/null +++ b/winit/src/program/window_manager.rs @@ -0,0 +1,157 @@ +use crate::core::mouse; +use crate::core::window::Id; +use crate::core::{Point, Size}; +use crate::graphics::Compositor; +use crate::program::{DefaultStyle, Program, State}; + +use std::collections::BTreeMap; +use std::sync::Arc; +use winit::monitor::MonitorHandle; + +#[allow(missing_debug_implementations)] +pub struct WindowManager<P, C> +where + P: Program, + C: Compositor<Renderer = P::Renderer>, + P::Theme: DefaultStyle, +{ + aliases: BTreeMap<winit::window::WindowId, Id>, + entries: BTreeMap<Id, Window<P, C>>, +} + +impl<P, C> WindowManager<P, C> +where + P: Program, + C: Compositor<Renderer = P::Renderer>, + P::Theme: DefaultStyle, +{ + pub fn new() -> Self { + Self { + aliases: BTreeMap::new(), + entries: BTreeMap::new(), + } + } + + pub fn insert( + &mut self, + id: Id, + window: Arc<winit::window::Window>, + application: &P, + compositor: &mut C, + exit_on_close_request: bool, + ) -> &mut Window<P, C> { + let state = State::new(application, id, &window); + let viewport_version = state.viewport_version(); + let physical_size = state.physical_size(); + let surface = compositor.create_surface( + window.clone(), + physical_size.width, + physical_size.height, + ); + let renderer = compositor.create_renderer(); + + let _ = self.aliases.insert(window.id(), id); + + let _ = self.entries.insert( + id, + Window { + raw: window, + state, + viewport_version, + exit_on_close_request, + surface, + renderer, + mouse_interaction: mouse::Interaction::None, + }, + ); + + self.entries + .get_mut(&id) + .expect("Get window that was just inserted") + } + + pub fn is_empty(&self) -> bool { + self.entries.is_empty() + } + + pub fn iter_mut( + &mut self, + ) -> impl Iterator<Item = (Id, &mut Window<P, C>)> { + self.entries.iter_mut().map(|(k, v)| (*k, v)) + } + + pub fn get_mut(&mut self, id: Id) -> Option<&mut Window<P, C>> { + self.entries.get_mut(&id) + } + + pub fn get_mut_alias( + &mut self, + id: winit::window::WindowId, + ) -> Option<(Id, &mut Window<P, C>)> { + let id = self.aliases.get(&id).copied()?; + + Some((id, self.get_mut(id)?)) + } + + pub fn last_monitor(&self) -> Option<MonitorHandle> { + self.entries.values().last()?.raw.current_monitor() + } + + pub fn remove(&mut self, id: Id) -> Option<Window<P, C>> { + let window = self.entries.remove(&id)?; + let _ = self.aliases.remove(&window.raw.id()); + + Some(window) + } +} + +impl<P, C> Default for WindowManager<P, C> +where + P: Program, + C: Compositor<Renderer = P::Renderer>, + P::Theme: DefaultStyle, +{ + fn default() -> Self { + Self::new() + } +} + +#[allow(missing_debug_implementations)] +pub struct Window<P, C> +where + P: Program, + C: Compositor<Renderer = P::Renderer>, + P::Theme: DefaultStyle, +{ + pub raw: Arc<winit::window::Window>, + pub state: State<P>, + pub viewport_version: u64, + pub exit_on_close_request: bool, + pub mouse_interaction: mouse::Interaction, + pub surface: C::Surface, + pub renderer: P::Renderer, +} + +impl<P, C> Window<P, C> +where + P: Program, + C: Compositor<Renderer = P::Renderer>, + P::Theme: DefaultStyle, +{ + pub fn position(&self) -> Option<Point> { + self.raw + .inner_position() + .ok() + .map(|position| position.to_logical(self.raw.scale_factor())) + .map(|position| Point { + x: position.x, + y: position.y, + }) + } + + pub fn size(&self) -> Size { + let size = self.raw.inner_size().to_logical(self.raw.scale_factor()); + + Size::new(size.width, size.height) + } +} |