StratoSDK is a framework with a declarative approach similar to Flutter/React, written and designed entirely for Rust.
| 1 | use std::{cell::RefCell, collections::HashMap, rc::Rc, sync::mpsc}; |
| 2 | |
| 3 | use anyhow::Result; |
| 4 | |
| 5 | use crate::{ |
| 6 | geometry::rect::RectF, |
| 7 | geometry::vector::{vec2f, Vector2F}, |
| 8 | platform::{self, WindowOptions}, |
| 9 | windowing::WindowCallbacks, |
| 10 | WindowId, |
| 11 | }; |
| 12 | |
| 13 | use super::event_loop::AppEvent; |
| 14 | |
| 15 | pub struct WindowManager { |
| 16 | windows: HashMap<WindowId, Rc<Window>>, |
| 17 | active_window: RefCell<Option<WindowId>>, |
| 18 | event_sender: mpsc::Sender<AppEvent>, |
| 19 | } |
| 20 | |
| 21 | impl WindowManager { |
| 22 | pub(super) fn new(event_sender: mpsc::Sender<AppEvent>) -> Self { |
| 23 | Self { |
| 24 | windows: HashMap::new(), |
| 25 | active_window: RefCell::new(None), |
| 26 | event_sender, |
| 27 | } |
| 28 | } |
| 29 | |
| 30 | fn set_active_window(&self, window_id: Option<WindowId>) { |
| 31 | *self.active_window.borrow_mut() = window_id; |
| 32 | |
| 33 | if self |
| 34 | .event_sender |
| 35 | .send(AppEvent::ActiveWindowChanged(window_id)) |
| 36 | .is_err() |
| 37 | { |
| 38 | log::warn!( |
| 39 | "Tried to send ActiveWindowChanged event, but event loop is no longer running" |
| 40 | ); |
| 41 | } |
| 42 | } |
| 43 | } |
| 44 | |
| 45 | impl strato_ui_core::platform::WindowManager for WindowManager { |
| 46 | fn open_window( |
| 47 | &mut self, |
| 48 | window_id: WindowId, |
| 49 | window_options: WindowOptions, |
| 50 | callbacks: WindowCallbacks, |
| 51 | ) -> Result<()> { |
| 52 | let window = Rc::new(Window::new(window_options, callbacks)); |
| 53 | self.windows.insert(window_id, window); |
| 54 | self.set_active_window(Some(window_id)); |
| 55 | Ok(()) |
| 56 | } |
| 57 | |
| 58 | fn platform_window(&self, window_id: WindowId) -> strato_ui_core::OptionalPlatformWindow { |
| 59 | self.windows |
| 60 | .get(&window_id) |
| 61 | .map(Rc::clone) |
| 62 | .map(|inner| inner as Rc<dyn crate::platform::Window>) |
| 63 | } |
| 64 | |
| 65 | fn remove_window(&mut self, window_id: WindowId) { |
| 66 | self.windows.remove(&window_id); |
| 67 | if *self.active_window.borrow() == Some(window_id) { |
| 68 | self.set_active_window(None); |
| 69 | } |
| 70 | } |
| 71 | |
| 72 | fn active_window_id(&self) -> Option<WindowId> { |
| 73 | *self.active_window.borrow() |
| 74 | } |
| 75 | |
| 76 | fn key_window_is_modal_panel(&self) -> bool { |
| 77 | false |
| 78 | } |
| 79 | |
| 80 | fn app_is_active(&self) -> bool { |
| 81 | true |
| 82 | } |
| 83 | |
| 84 | fn activate_app(&self, last_active_window: Option<WindowId>) -> Option<WindowId> { |
| 85 | self.set_active_window(last_active_window); |
| 86 | last_active_window |
| 87 | } |
| 88 | |
| 89 | fn show_window_and_focus_app( |
| 90 | &self, |
| 91 | window_id: WindowId, |
| 92 | _behavior: platform::WindowFocusBehavior, |
| 93 | ) { |
| 94 | self.set_active_window(Some(window_id)); |
| 95 | } |
| 96 | |
| 97 | fn hide_app(&self) { |
| 98 | // No-op. |
| 99 | } |
| 100 | |
| 101 | fn hide_window(&self, window_id: WindowId) { |
| 102 | // If hiding the active window, clear focus. |
| 103 | if *self.active_window.borrow() == Some(window_id) { |
| 104 | self.set_active_window(None); |
| 105 | } |
| 106 | } |
| 107 | |
| 108 | fn set_window_bounds(&self, window_id: WindowId, bound: RectF) { |
| 109 | if let Some(window) = self.windows.get(&window_id) { |
| 110 | window.set_bounds(bound); |
| 111 | } |
| 112 | } |
| 113 | |
| 114 | fn set_all_windows_background_blur_radius(&self, _blur_radius_pixels: u8) { |
| 115 | // No-op for headless. |
| 116 | } |
| 117 | |
| 118 | fn set_all_windows_background_blur_texture(&self, _use_blur_texture: bool) { |
| 119 | // No-op for headless. |
| 120 | } |
| 121 | |
| 122 | fn set_window_title(&self, _window_id: WindowId, _title: &str) { |
| 123 | // No-op for headless. |
| 124 | } |
| 125 | |
| 126 | fn close_window_async( |
| 127 | &self, |
| 128 | window_id: WindowId, |
| 129 | _termination_mode: platform::TerminationMode, |
| 130 | ) { |
| 131 | // In headless mode, always force-close the window since there's no confirmation dialog. |
| 132 | if self |
| 133 | .event_sender |
| 134 | .send(AppEvent::CloseWindow(window_id)) |
| 135 | .is_err() |
| 136 | { |
| 137 | log::warn!("Tried to send event, but event loop is no longer running"); |
| 138 | } |
| 139 | } |
| 140 | |
| 141 | fn active_display_bounds(&self) -> RectF { |
| 142 | // A single default display. |
| 143 | Default::default() |
| 144 | } |
| 145 | |
| 146 | fn active_display_id(&self) -> crate::DisplayId { |
| 147 | crate::DisplayId::from(0) |
| 148 | } |
| 149 | |
| 150 | fn display_count(&self) -> usize { |
| 151 | 1 |
| 152 | } |
| 153 | |
| 154 | fn bounds_for_display_idx(&self, _idx: crate::DisplayIdx) -> Option<RectF> { |
| 155 | Default::default() |
| 156 | } |
| 157 | |
| 158 | fn active_cursor_position_updated(&self) { |
| 159 | // No-op. |
| 160 | } |
| 161 | |
| 162 | fn windowing_system(&self) -> Option<crate::windowing::System> { |
| 163 | None |
| 164 | } |
| 165 | |
| 166 | fn os_window_manager_name(&self) -> Option<String> { |
| 167 | None |
| 168 | } |
| 169 | |
| 170 | fn is_tiling_window_manager(&self) -> bool { |
| 171 | false |
| 172 | } |
| 173 | } |
| 174 | |
| 175 | pub struct Window { |
| 176 | callbacks: WindowCallbacks, |
| 177 | bounds: RefCell<RectF>, |
| 178 | fullscreen_state: RefCell<platform::FullscreenState>, |
| 179 | } |
| 180 | |
| 181 | impl Window { |
| 182 | fn new(options: WindowOptions, callbacks: WindowCallbacks) -> Self { |
| 183 | let bounds = match options.bounds { |
| 184 | platform::WindowBounds::Default => RectF::new(vec2f(0.0, 0.0), vec2f(1024.0, 768.0)), |
| 185 | platform::WindowBounds::ExactSize(size) => RectF::new(vec2f(0.0, 0.0), size), |
| 186 | platform::WindowBounds::ExactPosition(rect) => rect, |
| 187 | }; |
| 188 | Self { |
| 189 | callbacks, |
| 190 | bounds: RefCell::new(bounds), |
| 191 | fullscreen_state: RefCell::new(options.fullscreen_state), |
| 192 | } |
| 193 | } |
| 194 | |
| 195 | fn set_bounds(&self, rect: RectF) { |
| 196 | *self.bounds.borrow_mut() = rect; |
| 197 | } |
| 198 | } |
| 199 | |
| 200 | impl platform::Window for Window { |
| 201 | fn minimize(&self) {} |
| 202 | |
| 203 | fn toggle_maximized(&self) {} |
| 204 | |
| 205 | fn toggle_fullscreen(&self) {} |
| 206 | |
| 207 | fn fullscreen_state(&self) -> platform::FullscreenState { |
| 208 | *self.fullscreen_state.borrow() |
| 209 | } |
| 210 | |
| 211 | fn set_titlebar_height(&self, _height: f64) {} |
| 212 | |
| 213 | fn supports_transparency(&self) -> bool { |
| 214 | false |
| 215 | } |
| 216 | |
| 217 | fn graphics_backend(&self) -> platform::GraphicsBackend { |
| 218 | platform::GraphicsBackend::Empty |
| 219 | } |
| 220 | |
| 221 | fn supported_backends(&self) -> Vec<platform::GraphicsBackend> { |
| 222 | vec![] |
| 223 | } |
| 224 | |
| 225 | fn uses_native_window_decorations(&self) -> bool { |
| 226 | false |
| 227 | } |
| 228 | |
| 229 | fn as_ctx(&self) -> &dyn platform::WindowContext { |
| 230 | self |
| 231 | } |
| 232 | |
| 233 | fn callbacks(&self) -> &crate::windowing::WindowCallbacks { |
| 234 | &self.callbacks |
| 235 | } |
| 236 | |
| 237 | fn as_any(&self) -> &dyn std::any::Any { |
| 238 | self |
| 239 | } |
| 240 | } |
| 241 | |
| 242 | impl platform::WindowContext for Window { |
| 243 | fn size(&self) -> Vector2F { |
| 244 | self.bounds.borrow().size() |
| 245 | } |
| 246 | |
| 247 | fn origin(&self) -> Vector2F { |
| 248 | self.bounds.borrow().origin() |
| 249 | } |
| 250 | |
| 251 | fn backing_scale_factor(&self) -> f32 { |
| 252 | 1.0 |
| 253 | } |
| 254 | |
| 255 | fn max_texture_dimension_2d(&self) -> Option<u32> { |
| 256 | Some(2048) |
| 257 | } |
| 258 | |
| 259 | fn render_scene(&self, _scene: Rc<crate::Scene>) {} |
| 260 | |
| 261 | fn request_redraw(&self) {} |
| 262 | |
| 263 | fn request_frame_capture( |
| 264 | &self, |
| 265 | _callback: Box<dyn FnOnce(platform::CapturedFrame) + Send + 'static>, |
| 266 | ) { |
| 267 | // no-op for headless |
| 268 | } |
| 269 | } |
| 270 |