1493 lines
52 KiB
Rust
1493 lines
52 KiB
Rust
use crate::{
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elements::AnyRootElement,
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geometry::rect::RectF,
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json::{self, ToJson},
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keymap_matcher::{Binding, Keystroke, MatchResult},
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platform::{
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self, Appearance, CursorStyle, Event, KeyDownEvent, KeyUpEvent, ModifiersChangedEvent,
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MouseButton, MouseMovedEvent, PromptLevel, WindowBounds,
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},
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scene::{
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CursorRegion, MouseClick, MouseDown, MouseDownOut, MouseDrag, MouseEvent, MouseHover,
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MouseMove, MouseMoveOut, MouseScrollWheel, MouseUp, MouseUpOut, Scene,
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},
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text_layout::TextLayoutCache,
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util::post_inc,
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Action, AnyModelHandle, AnyView, AnyViewHandle, AnyWeakModelHandle, AnyWeakViewHandle,
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AppContext, Drawable, Effect, Entity, Handle, ModelContext, ModelHandle, MouseRegion,
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MouseRegionId, ParentId, ReadModel, ReadView, SceneBuilder, Subscription, UpdateModel,
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UpdateView, UpgradeModelHandle, UpgradeViewHandle, View, ViewContext, ViewHandle,
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WeakModelHandle, WeakViewHandle, WindowInvalidation,
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};
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use anyhow::{anyhow, bail, Result};
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use collections::{HashMap, HashSet};
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use pathfinder_geometry::vector::{vec2f, Vector2F};
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use postage::oneshot;
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use serde_json::json;
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use smallvec::SmallVec;
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use sqlez::{
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bindable::{Bind, Column, StaticColumnCount},
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statement::Statement,
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};
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use std::{
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any::TypeId,
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ops::{Deref, DerefMut, Range},
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};
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use util::ResultExt;
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use uuid::Uuid;
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use super::Reference;
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pub struct Window {
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pub(crate) root_view: Option<AnyViewHandle>,
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pub(crate) focused_view_id: Option<usize>,
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pub(crate) is_active: bool,
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pub(crate) is_fullscreen: bool,
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pub(crate) invalidation: Option<WindowInvalidation>,
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pub(crate) platform_window: Box<dyn platform::Window>,
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pub(crate) rendered_views: HashMap<usize, Box<dyn AnyRootElement>>,
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titlebar_height: f32,
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appearance: Appearance,
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cursor_regions: Vec<CursorRegion>,
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mouse_regions: Vec<(MouseRegion, usize)>,
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last_mouse_moved_event: Option<Event>,
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pub(crate) hovered_region_ids: HashSet<MouseRegionId>,
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pub(crate) clicked_region_ids: HashSet<MouseRegionId>,
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pub(crate) clicked_button: Option<MouseButton>,
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mouse_position: Vector2F,
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text_layout_cache: TextLayoutCache,
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}
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impl Window {
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pub fn new<V, F>(
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window_id: usize,
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platform_window: Box<dyn platform::Window>,
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cx: &mut AppContext,
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build_view: F,
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) -> Self
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where
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F: FnOnce(&mut ViewContext<V>) -> V,
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V: View,
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{
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let titlebar_height = platform_window.titlebar_height();
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let appearance = platform_window.appearance();
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let mut window = Self {
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root_view: None,
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focused_view_id: None,
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is_active: false,
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invalidation: None,
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is_fullscreen: false,
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platform_window,
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rendered_views: Default::default(),
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cursor_regions: Default::default(),
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mouse_regions: Default::default(),
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text_layout_cache: TextLayoutCache::new(cx.font_system.clone()),
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last_mouse_moved_event: None,
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hovered_region_ids: Default::default(),
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clicked_region_ids: Default::default(),
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clicked_button: None,
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mouse_position: vec2f(0., 0.),
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titlebar_height,
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appearance,
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};
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let mut window_context = WindowContext::mutable(cx, &mut window, window_id);
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let root_view = window_context
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.build_and_insert_view(ParentId::Root, |cx| Some(build_view(cx)))
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.unwrap();
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if let Some(mut invalidation) = window_context.window.invalidation.take() {
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window_context.invalidate(&mut invalidation, appearance);
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}
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window.focused_view_id = Some(root_view.id());
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window.root_view = Some(root_view.into_any());
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window
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}
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pub fn root_view(&self) -> &AnyViewHandle {
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&self
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.root_view
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.as_ref()
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.expect("root_view called during window construction")
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}
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}
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pub struct WindowContext<'a: 'b, 'b> {
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pub(crate) app_context: Reference<'a, AppContext>,
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pub(crate) window: Reference<'b, Window>,
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pub(crate) window_id: usize,
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pub(crate) refreshing: bool,
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pub(crate) removed: bool,
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}
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impl Deref for WindowContext<'_, '_> {
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type Target = AppContext;
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fn deref(&self) -> &Self::Target {
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&self.app_context
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}
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}
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impl DerefMut for WindowContext<'_, '_> {
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fn deref_mut(&mut self) -> &mut Self::Target {
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&mut self.app_context
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}
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}
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impl ReadModel for WindowContext<'_, '_> {
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fn read_model<T: Entity>(&self, handle: &ModelHandle<T>) -> &T {
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self.app_context.read_model(handle)
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}
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}
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impl UpdateModel for WindowContext<'_, '_> {
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fn update_model<T: Entity, R>(
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&mut self,
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handle: &ModelHandle<T>,
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update: &mut dyn FnMut(&mut T, &mut ModelContext<T>) -> R,
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) -> R {
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self.app_context.update_model(handle, update)
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}
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}
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impl ReadView for WindowContext<'_, '_> {
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fn read_view<W: View>(&self, handle: &crate::ViewHandle<W>) -> &W {
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self.app_context.read_view(handle)
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}
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}
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impl UpdateView for WindowContext<'_, '_> {
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type Output<S> = S;
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fn update_view<T, S>(
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&mut self,
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handle: &ViewHandle<T>,
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update: &mut dyn FnMut(&mut T, &mut ViewContext<T>) -> S,
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) -> S
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where
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T: View,
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{
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self.update_any_view(handle.view_id, |view, cx| {
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let mut cx = ViewContext::mutable(cx, handle.view_id);
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update(
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view.as_any_mut()
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.downcast_mut()
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.expect("downcast is type safe"),
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&mut cx,
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)
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})
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.expect("view is already on the stack")
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}
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}
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impl UpgradeModelHandle for WindowContext<'_, '_> {
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fn upgrade_model_handle<T: Entity>(
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&self,
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handle: &WeakModelHandle<T>,
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) -> Option<ModelHandle<T>> {
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self.app_context.upgrade_model_handle(handle)
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}
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fn model_handle_is_upgradable<T: Entity>(&self, handle: &WeakModelHandle<T>) -> bool {
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self.app_context.model_handle_is_upgradable(handle)
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}
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fn upgrade_any_model_handle(&self, handle: &AnyWeakModelHandle) -> Option<AnyModelHandle> {
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self.app_context.upgrade_any_model_handle(handle)
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}
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}
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impl UpgradeViewHandle for WindowContext<'_, '_> {
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fn upgrade_view_handle<T: View>(&self, handle: &WeakViewHandle<T>) -> Option<ViewHandle<T>> {
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self.app_context.upgrade_view_handle(handle)
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}
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fn upgrade_any_view_handle(&self, handle: &AnyWeakViewHandle) -> Option<AnyViewHandle> {
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self.app_context.upgrade_any_view_handle(handle)
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}
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}
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impl<'a: 'b, 'b> WindowContext<'a, 'b> {
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pub fn mutable(
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app_context: &'a mut AppContext,
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window: &'b mut Window,
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window_id: usize,
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) -> Self {
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Self {
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app_context: Reference::Mutable(app_context),
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window: Reference::Mutable(window),
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window_id,
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refreshing: false,
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removed: false,
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}
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}
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pub fn immutable(app_context: &'a AppContext, window: &'b Window, window_id: usize) -> Self {
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Self {
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app_context: Reference::Immutable(app_context),
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window: Reference::Immutable(window),
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window_id,
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refreshing: false,
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removed: false,
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}
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}
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pub fn remove_window(&mut self) {
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self.removed = true;
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}
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pub fn window_id(&self) -> usize {
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self.window_id
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}
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pub fn app_context(&mut self) -> &mut AppContext {
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&mut self.app_context
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}
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pub fn root_view(&self) -> &AnyViewHandle {
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self.window.root_view()
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}
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pub fn window_size(&self) -> Vector2F {
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self.window.platform_window.content_size()
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}
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pub fn text_layout_cache(&self) -> &TextLayoutCache {
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&self.window.text_layout_cache
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}
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pub(crate) fn update_any_view<F, T>(&mut self, view_id: usize, f: F) -> Option<T>
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where
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F: FnOnce(&mut dyn AnyView, &mut Self) -> T,
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{
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let window_id = self.window_id;
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let mut view = self.views.remove(&(window_id, view_id))?;
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let result = f(view.as_mut(), self);
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self.views.insert((window_id, view_id), view);
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Some(result)
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}
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pub fn defer(&mut self, callback: impl 'static + FnOnce(&mut WindowContext)) {
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let window_id = self.window_id;
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self.app_context.defer(move |cx| {
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cx.update_window(window_id, |cx| callback(cx));
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})
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}
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pub fn update_global<T, F, U>(&mut self, update: F) -> U
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where
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T: 'static,
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F: FnOnce(&mut T, &mut Self) -> U,
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{
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AppContext::update_global_internal(self, |global, cx| update(global, cx))
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}
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pub fn update_default_global<T, F, U>(&mut self, update: F) -> U
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where
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T: 'static + Default,
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F: FnOnce(&mut T, &mut Self) -> U,
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{
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AppContext::update_default_global_internal(self, |global, cx| update(global, cx))
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}
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pub fn subscribe<E, H, F>(&mut self, handle: &H, mut callback: F) -> Subscription
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where
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E: Entity,
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E::Event: 'static,
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H: Handle<E>,
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F: 'static + FnMut(H, &E::Event, &mut WindowContext),
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{
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self.subscribe_internal(handle, move |emitter, event, cx| {
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callback(emitter, event, cx);
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true
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})
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}
|
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|
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pub fn subscribe_internal<E, H, F>(&mut self, handle: &H, mut callback: F) -> Subscription
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where
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E: Entity,
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E::Event: 'static,
|
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H: Handle<E>,
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F: 'static + FnMut(H, &E::Event, &mut WindowContext) -> bool,
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{
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let window_id = self.window_id;
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self.app_context
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.subscribe_internal(handle, move |emitter, event, cx| {
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cx.update_window(window_id, |cx| callback(emitter, event, cx))
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.unwrap_or(false)
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})
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}
|
|
|
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pub(crate) fn observe_window_activation<F>(&mut self, callback: F) -> Subscription
|
|
where
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F: 'static + FnMut(bool, &mut WindowContext) -> bool,
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|
{
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let window_id = self.window_id;
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let subscription_id = post_inc(&mut self.next_subscription_id);
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self.pending_effects
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.push_back(Effect::WindowActivationObservation {
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window_id,
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subscription_id,
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callback: Box::new(callback),
|
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});
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Subscription::WindowActivationObservation(
|
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self.window_activation_observations
|
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.subscribe(window_id, subscription_id),
|
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)
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}
|
|
|
|
pub(crate) fn observe_fullscreen<F>(&mut self, callback: F) -> Subscription
|
|
where
|
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F: 'static + FnMut(bool, &mut WindowContext) -> bool,
|
|
{
|
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let window_id = self.window_id;
|
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let subscription_id = post_inc(&mut self.next_subscription_id);
|
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self.pending_effects
|
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.push_back(Effect::WindowFullscreenObservation {
|
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window_id,
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subscription_id,
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callback: Box::new(callback),
|
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});
|
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Subscription::WindowActivationObservation(
|
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self.window_activation_observations
|
|
.subscribe(window_id, subscription_id),
|
|
)
|
|
}
|
|
|
|
pub(crate) fn observe_window_bounds<F>(&mut self, callback: F) -> Subscription
|
|
where
|
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F: 'static + FnMut(WindowBounds, Uuid, &mut WindowContext) -> bool,
|
|
{
|
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let window_id = self.window_id;
|
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let subscription_id = post_inc(&mut self.next_subscription_id);
|
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self.pending_effects
|
|
.push_back(Effect::WindowBoundsObservation {
|
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window_id,
|
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subscription_id,
|
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callback: Box::new(callback),
|
|
});
|
|
Subscription::WindowBoundsObservation(
|
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self.window_bounds_observations
|
|
.subscribe(window_id, subscription_id),
|
|
)
|
|
}
|
|
|
|
pub fn observe_keystrokes<F>(&mut self, callback: F) -> Subscription
|
|
where
|
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F: 'static
|
|
+ FnMut(&Keystroke, &MatchResult, Option<&Box<dyn Action>>, &mut WindowContext) -> bool,
|
|
{
|
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let window_id = self.window_id;
|
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let subscription_id = post_inc(&mut self.next_subscription_id);
|
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self.keystroke_observations
|
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.add_callback(window_id, subscription_id, Box::new(callback));
|
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Subscription::KeystrokeObservation(
|
|
self.keystroke_observations
|
|
.subscribe(window_id, subscription_id),
|
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)
|
|
}
|
|
|
|
/// Return keystrokes that would dispatch the given action on the given view.
|
|
pub(crate) fn keystrokes_for_action(
|
|
&mut self,
|
|
view_id: usize,
|
|
action: &dyn Action,
|
|
) -> Option<SmallVec<[Keystroke; 2]>> {
|
|
let window_id = self.window_id;
|
|
let mut contexts = Vec::new();
|
|
let mut handler_depth = None;
|
|
for (i, view_id) in self.ancestors(view_id).enumerate() {
|
|
if let Some(view) = self.views.get(&(window_id, view_id)) {
|
|
if let Some(actions) = self.actions.get(&view.as_any().type_id()) {
|
|
if actions.contains_key(&action.as_any().type_id()) {
|
|
handler_depth = Some(i);
|
|
}
|
|
}
|
|
contexts.push(view.keymap_context(self));
|
|
}
|
|
}
|
|
|
|
if self.global_actions.contains_key(&action.as_any().type_id()) {
|
|
handler_depth = Some(contexts.len())
|
|
}
|
|
|
|
self.keystroke_matcher
|
|
.bindings_for_action_type(action.as_any().type_id())
|
|
.find_map(|b| {
|
|
handler_depth
|
|
.map(|highest_handler| {
|
|
if (0..=highest_handler).any(|depth| b.match_context(&contexts[depth..])) {
|
|
Some(b.keystrokes().into())
|
|
} else {
|
|
None
|
|
}
|
|
})
|
|
.flatten()
|
|
})
|
|
}
|
|
|
|
pub fn available_actions(
|
|
&self,
|
|
view_id: usize,
|
|
) -> impl Iterator<Item = (&'static str, Box<dyn Action>, SmallVec<[&Binding; 1]>)> {
|
|
let window_id = self.window_id;
|
|
let mut contexts = Vec::new();
|
|
let mut handler_depths_by_action_type = HashMap::<TypeId, usize>::default();
|
|
for (depth, view_id) in self.ancestors(view_id).enumerate() {
|
|
if let Some(view) = self.views.get(&(window_id, view_id)) {
|
|
contexts.push(view.keymap_context(self));
|
|
let view_type = view.as_any().type_id();
|
|
if let Some(actions) = self.actions.get(&view_type) {
|
|
handler_depths_by_action_type.extend(
|
|
actions
|
|
.keys()
|
|
.copied()
|
|
.map(|action_type| (action_type, depth)),
|
|
);
|
|
}
|
|
}
|
|
}
|
|
|
|
handler_depths_by_action_type.extend(
|
|
self.global_actions
|
|
.keys()
|
|
.copied()
|
|
.map(|action_type| (action_type, contexts.len())),
|
|
);
|
|
|
|
self.action_deserializers
|
|
.iter()
|
|
.filter_map(move |(name, (type_id, deserialize))| {
|
|
if let Some(action_depth) = handler_depths_by_action_type.get(type_id).copied() {
|
|
Some((
|
|
*name,
|
|
deserialize("{}").ok()?,
|
|
self.keystroke_matcher
|
|
.bindings_for_action_type(*type_id)
|
|
.filter(|b| {
|
|
(0..=action_depth).any(|depth| b.match_context(&contexts[depth..]))
|
|
})
|
|
.collect(),
|
|
))
|
|
} else {
|
|
None
|
|
}
|
|
})
|
|
}
|
|
|
|
pub fn dispatch_keystroke(&mut self, keystroke: &Keystroke) -> bool {
|
|
let window_id = self.window_id;
|
|
if let Some(focused_view_id) = self.focused_view_id() {
|
|
let dispatch_path = self
|
|
.ancestors(focused_view_id)
|
|
.filter_map(|view_id| {
|
|
self.views
|
|
.get(&(window_id, view_id))
|
|
.map(|view| (view_id, view.keymap_context(self)))
|
|
})
|
|
.collect();
|
|
|
|
let match_result = self
|
|
.keystroke_matcher
|
|
.push_keystroke(keystroke.clone(), dispatch_path);
|
|
let mut handled_by = None;
|
|
|
|
let keystroke_handled = match &match_result {
|
|
MatchResult::None => false,
|
|
MatchResult::Pending => true,
|
|
MatchResult::Matches(matches) => {
|
|
for (view_id, action) in matches {
|
|
if self.handle_dispatch_action_from_effect(Some(*view_id), action.as_ref())
|
|
{
|
|
self.keystroke_matcher.clear_pending();
|
|
handled_by = Some(action.boxed_clone());
|
|
break;
|
|
}
|
|
}
|
|
handled_by.is_some()
|
|
}
|
|
};
|
|
|
|
self.keystroke(
|
|
window_id,
|
|
keystroke.clone(),
|
|
handled_by,
|
|
match_result.clone(),
|
|
);
|
|
keystroke_handled
|
|
} else {
|
|
self.keystroke(window_id, keystroke.clone(), None, MatchResult::None);
|
|
false
|
|
}
|
|
}
|
|
|
|
pub fn dispatch_event(&mut self, event: Event, event_reused: bool) -> bool {
|
|
let mut mouse_events = SmallVec::<[_; 2]>::new();
|
|
let mut notified_views: HashSet<usize> = Default::default();
|
|
let window_id = self.window_id;
|
|
|
|
// 1. Handle platform event. Keyboard events get dispatched immediately, while mouse events
|
|
// get mapped into the mouse-specific MouseEvent type.
|
|
// -> These are usually small: [Mouse Down] or [Mouse up, Click] or [Mouse Moved, Mouse Dragged?]
|
|
// -> Also updates mouse-related state
|
|
match &event {
|
|
Event::KeyDown(e) => return self.dispatch_key_down(e),
|
|
|
|
Event::KeyUp(e) => return self.dispatch_key_up(e),
|
|
|
|
Event::ModifiersChanged(e) => return self.dispatch_modifiers_changed(e),
|
|
|
|
Event::MouseDown(e) => {
|
|
// Click events are weird because they can be fired after a drag event.
|
|
// MDN says that browsers handle this by starting from 'the most
|
|
// specific ancestor element that contained both [positions]'
|
|
// So we need to store the overlapping regions on mouse down.
|
|
|
|
// If there is already clicked_button stored, don't replace it.
|
|
if self.window.clicked_button.is_none() {
|
|
self.window.clicked_region_ids = self
|
|
.window
|
|
.mouse_regions
|
|
.iter()
|
|
.filter_map(|(region, _)| {
|
|
if region.bounds.contains_point(e.position) {
|
|
Some(region.id())
|
|
} else {
|
|
None
|
|
}
|
|
})
|
|
.collect();
|
|
|
|
self.window.clicked_button = Some(e.button);
|
|
}
|
|
|
|
mouse_events.push(MouseEvent::Down(MouseDown {
|
|
region: Default::default(),
|
|
platform_event: e.clone(),
|
|
}));
|
|
mouse_events.push(MouseEvent::DownOut(MouseDownOut {
|
|
region: Default::default(),
|
|
platform_event: e.clone(),
|
|
}));
|
|
}
|
|
|
|
Event::MouseUp(e) => {
|
|
// NOTE: The order of event pushes is important! MouseUp events MUST be fired
|
|
// before click events, and so the MouseUp events need to be pushed before
|
|
// MouseClick events.
|
|
mouse_events.push(MouseEvent::Up(MouseUp {
|
|
region: Default::default(),
|
|
platform_event: e.clone(),
|
|
}));
|
|
mouse_events.push(MouseEvent::UpOut(MouseUpOut {
|
|
region: Default::default(),
|
|
platform_event: e.clone(),
|
|
}));
|
|
mouse_events.push(MouseEvent::Click(MouseClick {
|
|
region: Default::default(),
|
|
platform_event: e.clone(),
|
|
}));
|
|
}
|
|
|
|
Event::MouseMoved(
|
|
e @ MouseMovedEvent {
|
|
position,
|
|
pressed_button,
|
|
..
|
|
},
|
|
) => {
|
|
let mut style_to_assign = CursorStyle::Arrow;
|
|
for region in self.window.cursor_regions.iter().rev() {
|
|
if region.bounds.contains_point(*position) {
|
|
style_to_assign = region.style;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if self
|
|
.window
|
|
.platform_window
|
|
.is_topmost_for_position(*position)
|
|
{
|
|
self.platform().set_cursor_style(style_to_assign);
|
|
}
|
|
|
|
if !event_reused {
|
|
if pressed_button.is_some() {
|
|
mouse_events.push(MouseEvent::Drag(MouseDrag {
|
|
region: Default::default(),
|
|
prev_mouse_position: self.window.mouse_position,
|
|
platform_event: e.clone(),
|
|
}));
|
|
} else if let Some(clicked_button) = self.window.clicked_button {
|
|
// Mouse up event happened outside the current window. Simulate mouse up button event
|
|
let button_event = e.to_button_event(clicked_button);
|
|
mouse_events.push(MouseEvent::Up(MouseUp {
|
|
region: Default::default(),
|
|
platform_event: button_event.clone(),
|
|
}));
|
|
mouse_events.push(MouseEvent::UpOut(MouseUpOut {
|
|
region: Default::default(),
|
|
platform_event: button_event.clone(),
|
|
}));
|
|
mouse_events.push(MouseEvent::Click(MouseClick {
|
|
region: Default::default(),
|
|
platform_event: button_event.clone(),
|
|
}));
|
|
}
|
|
|
|
mouse_events.push(MouseEvent::Move(MouseMove {
|
|
region: Default::default(),
|
|
platform_event: e.clone(),
|
|
}));
|
|
}
|
|
|
|
mouse_events.push(MouseEvent::Hover(MouseHover {
|
|
region: Default::default(),
|
|
platform_event: e.clone(),
|
|
started: false,
|
|
}));
|
|
mouse_events.push(MouseEvent::MoveOut(MouseMoveOut {
|
|
region: Default::default(),
|
|
}));
|
|
|
|
self.window.last_mouse_moved_event = Some(event.clone());
|
|
}
|
|
|
|
Event::MouseExited(event) => {
|
|
// When the platform sends a MouseExited event, synthesize
|
|
// a MouseMoved event whose position is outside the window's
|
|
// bounds so that hover and cursor state can be updated.
|
|
return self.dispatch_event(
|
|
Event::MouseMoved(MouseMovedEvent {
|
|
position: event.position,
|
|
pressed_button: event.pressed_button,
|
|
modifiers: event.modifiers,
|
|
}),
|
|
event_reused,
|
|
);
|
|
}
|
|
|
|
Event::ScrollWheel(e) => mouse_events.push(MouseEvent::ScrollWheel(MouseScrollWheel {
|
|
region: Default::default(),
|
|
platform_event: e.clone(),
|
|
})),
|
|
}
|
|
|
|
if let Some(position) = event.position() {
|
|
self.window.mouse_position = position;
|
|
}
|
|
|
|
// 2. Dispatch mouse events on regions
|
|
let mut any_event_handled = false;
|
|
for mut mouse_event in mouse_events {
|
|
let mut valid_regions = Vec::new();
|
|
|
|
// GPUI elements are arranged by z_index but sibling elements can register overlapping
|
|
// mouse regions. As such, hover events are only fired on overlapping elements which
|
|
// are at the same z-index as the topmost element which overlaps with the mouse.
|
|
match &mouse_event {
|
|
MouseEvent::Hover(_) => {
|
|
let mut highest_z_index = None;
|
|
let mouse_position = self.window.mouse_position.clone();
|
|
let window = &mut *self.window;
|
|
for (region, z_index) in window.mouse_regions.iter().rev() {
|
|
// Allow mouse regions to appear transparent to hovers
|
|
if !region.hoverable {
|
|
continue;
|
|
}
|
|
|
|
let contains_mouse = region.bounds.contains_point(mouse_position);
|
|
|
|
if contains_mouse && highest_z_index.is_none() {
|
|
highest_z_index = Some(z_index);
|
|
}
|
|
|
|
// This unwrap relies on short circuiting boolean expressions
|
|
// The right side of the && is only executed when contains_mouse
|
|
// is true, and we know above that when contains_mouse is true
|
|
// highest_z_index is set.
|
|
if contains_mouse && z_index == highest_z_index.unwrap() {
|
|
//Ensure that hover entrance events aren't sent twice
|
|
if window.hovered_region_ids.insert(region.id()) {
|
|
valid_regions.push(region.clone());
|
|
if region.notify_on_hover {
|
|
notified_views.insert(region.id().view_id());
|
|
}
|
|
}
|
|
} else {
|
|
// Ensure that hover exit events aren't sent twice
|
|
if window.hovered_region_ids.remove(®ion.id()) {
|
|
valid_regions.push(region.clone());
|
|
if region.notify_on_hover {
|
|
notified_views.insert(region.id().view_id());
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
MouseEvent::Down(_) | MouseEvent::Up(_) => {
|
|
for (region, _) in self.window.mouse_regions.iter().rev() {
|
|
if region.bounds.contains_point(self.window.mouse_position) {
|
|
valid_regions.push(region.clone());
|
|
if region.notify_on_click {
|
|
notified_views.insert(region.id().view_id());
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
MouseEvent::Click(e) => {
|
|
// Only raise click events if the released button is the same as the one stored
|
|
if self
|
|
.window
|
|
.clicked_button
|
|
.map(|clicked_button| clicked_button == e.button)
|
|
.unwrap_or(false)
|
|
{
|
|
// Clear clicked regions and clicked button
|
|
let clicked_region_ids = std::mem::replace(
|
|
&mut self.window.clicked_region_ids,
|
|
Default::default(),
|
|
);
|
|
self.window.clicked_button = None;
|
|
|
|
// Find regions which still overlap with the mouse since the last MouseDown happened
|
|
for (mouse_region, _) in self.window.mouse_regions.iter().rev() {
|
|
if clicked_region_ids.contains(&mouse_region.id()) {
|
|
if mouse_region
|
|
.bounds
|
|
.contains_point(self.window.mouse_position)
|
|
{
|
|
valid_regions.push(mouse_region.clone());
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
MouseEvent::Drag(_) => {
|
|
for (mouse_region, _) in self.window.mouse_regions.iter().rev() {
|
|
if self.window.clicked_region_ids.contains(&mouse_region.id()) {
|
|
valid_regions.push(mouse_region.clone());
|
|
}
|
|
}
|
|
}
|
|
|
|
MouseEvent::MoveOut(_) | MouseEvent::UpOut(_) | MouseEvent::DownOut(_) => {
|
|
for (mouse_region, _) in self.window.mouse_regions.iter().rev() {
|
|
// NOT contains
|
|
if !mouse_region
|
|
.bounds
|
|
.contains_point(self.window.mouse_position)
|
|
{
|
|
valid_regions.push(mouse_region.clone());
|
|
}
|
|
}
|
|
}
|
|
|
|
_ => {
|
|
for (mouse_region, _) in self.window.mouse_regions.iter().rev() {
|
|
// Contains
|
|
if mouse_region
|
|
.bounds
|
|
.contains_point(self.window.mouse_position)
|
|
{
|
|
valid_regions.push(mouse_region.clone());
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
//3. Fire region events
|
|
let hovered_region_ids = self.window.hovered_region_ids.clone();
|
|
for valid_region in valid_regions.into_iter() {
|
|
let mut handled = false;
|
|
mouse_event.set_region(valid_region.bounds);
|
|
if let MouseEvent::Hover(e) = &mut mouse_event {
|
|
e.started = hovered_region_ids.contains(&valid_region.id())
|
|
}
|
|
// Handle Down events if the MouseRegion has a Click or Drag handler. This makes the api more intuitive as you would
|
|
// not expect a MouseRegion to be transparent to Down events if it also has a Click handler.
|
|
// This behavior can be overridden by adding a Down handler
|
|
if let MouseEvent::Down(e) = &mouse_event {
|
|
let has_click = valid_region
|
|
.handlers
|
|
.contains(MouseEvent::click_disc(), Some(e.button));
|
|
let has_drag = valid_region
|
|
.handlers
|
|
.contains(MouseEvent::drag_disc(), Some(e.button));
|
|
let has_down = valid_region
|
|
.handlers
|
|
.contains(MouseEvent::down_disc(), Some(e.button));
|
|
if !has_down && (has_click || has_drag) {
|
|
handled = true;
|
|
}
|
|
}
|
|
|
|
// `event_consumed` should only be true if there are any handlers for this event.
|
|
let mut event_consumed = handled;
|
|
if let Some(callbacks) = valid_region.handlers.get(&mouse_event.handler_key()) {
|
|
for callback in callbacks {
|
|
handled = true;
|
|
let view_id = valid_region.id().view_id();
|
|
self.update_any_view(view_id, |view, cx| {
|
|
handled = callback(mouse_event.clone(), view.as_any_mut(), cx, view_id);
|
|
});
|
|
event_consumed |= handled;
|
|
any_event_handled |= handled;
|
|
}
|
|
}
|
|
|
|
any_event_handled |= handled;
|
|
|
|
// For bubbling events, if the event was handled, don't continue dispatching.
|
|
// This only makes sense for local events which return false from is_capturable.
|
|
if event_consumed && mouse_event.is_capturable() {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
for view_id in notified_views {
|
|
self.notify_view(window_id, view_id);
|
|
}
|
|
|
|
any_event_handled
|
|
}
|
|
|
|
pub fn dispatch_key_down(&mut self, event: &KeyDownEvent) -> bool {
|
|
let window_id = self.window_id;
|
|
if let Some(focused_view_id) = self.window.focused_view_id {
|
|
for view_id in self.ancestors(focused_view_id).collect::<Vec<_>>() {
|
|
if let Some(mut view) = self.views.remove(&(window_id, view_id)) {
|
|
let handled = view.key_down(event, self, view_id);
|
|
self.views.insert((window_id, view_id), view);
|
|
if handled {
|
|
return true;
|
|
}
|
|
} else {
|
|
log::error!("view {} does not exist", view_id)
|
|
}
|
|
}
|
|
}
|
|
|
|
false
|
|
}
|
|
|
|
pub fn dispatch_key_up(&mut self, event: &KeyUpEvent) -> bool {
|
|
let window_id = self.window_id;
|
|
if let Some(focused_view_id) = self.window.focused_view_id {
|
|
for view_id in self.ancestors(focused_view_id).collect::<Vec<_>>() {
|
|
if let Some(mut view) = self.views.remove(&(window_id, view_id)) {
|
|
let handled = view.key_up(event, self, view_id);
|
|
self.views.insert((window_id, view_id), view);
|
|
if handled {
|
|
return true;
|
|
}
|
|
} else {
|
|
log::error!("view {} does not exist", view_id)
|
|
}
|
|
}
|
|
}
|
|
|
|
false
|
|
}
|
|
|
|
pub fn dispatch_modifiers_changed(&mut self, event: &ModifiersChangedEvent) -> bool {
|
|
let window_id = self.window_id;
|
|
if let Some(focused_view_id) = self.window.focused_view_id {
|
|
for view_id in self.ancestors(focused_view_id).collect::<Vec<_>>() {
|
|
if let Some(mut view) = self.views.remove(&(window_id, view_id)) {
|
|
let handled = view.modifiers_changed(event, self, view_id);
|
|
self.views.insert((window_id, view_id), view);
|
|
if handled {
|
|
return true;
|
|
}
|
|
} else {
|
|
log::error!("view {} does not exist", view_id)
|
|
}
|
|
}
|
|
}
|
|
|
|
false
|
|
}
|
|
|
|
pub fn invalidate(&mut self, invalidation: &mut WindowInvalidation, appearance: Appearance) {
|
|
self.start_frame();
|
|
self.window.appearance = appearance;
|
|
for view_id in &invalidation.removed {
|
|
invalidation.updated.remove(view_id);
|
|
self.window.rendered_views.remove(view_id);
|
|
}
|
|
for view_id in &invalidation.updated {
|
|
let titlebar_height = self.window.titlebar_height;
|
|
let hovered_region_ids = self.window.hovered_region_ids.clone();
|
|
let clicked_region_ids = self
|
|
.window
|
|
.clicked_button
|
|
.map(|button| (self.window.clicked_region_ids.clone(), button));
|
|
|
|
let element = self
|
|
.render_view(RenderParams {
|
|
view_id: *view_id,
|
|
titlebar_height,
|
|
hovered_region_ids,
|
|
clicked_region_ids,
|
|
refreshing: false,
|
|
appearance,
|
|
})
|
|
.unwrap();
|
|
self.window.rendered_views.insert(*view_id, element);
|
|
}
|
|
}
|
|
|
|
pub fn render_view(&mut self, params: RenderParams) -> Result<Box<dyn AnyRootElement>> {
|
|
let window_id = self.window_id;
|
|
let view_id = params.view_id;
|
|
let mut view = self
|
|
.views
|
|
.remove(&(window_id, view_id))
|
|
.ok_or_else(|| anyhow!("view not found"))?;
|
|
let element = view.render(self, view_id);
|
|
self.views.insert((window_id, view_id), view);
|
|
Ok(element)
|
|
}
|
|
|
|
pub fn build_scene(&mut self) -> Result<Scene> {
|
|
let window_size = self.window.platform_window.content_size();
|
|
let scale_factor = self.window.platform_window.scale_factor();
|
|
|
|
let root_view_id = self.window.root_view().id();
|
|
let mut rendered_root = self.window.rendered_views.remove(&root_view_id).unwrap();
|
|
rendered_root.layout(SizeConstraint::strict(window_size), self)?;
|
|
|
|
let mut scene_builder = SceneBuilder::new(scale_factor);
|
|
rendered_root.paint(
|
|
&mut scene_builder,
|
|
Vector2F::zero(),
|
|
RectF::from_points(Vector2F::zero(), window_size),
|
|
self,
|
|
)?;
|
|
self.window
|
|
.rendered_views
|
|
.insert(root_view_id, rendered_root);
|
|
|
|
self.window.text_layout_cache.finish_frame();
|
|
let scene = scene_builder.build();
|
|
self.window.cursor_regions = scene.cursor_regions();
|
|
self.window.mouse_regions = scene.mouse_regions();
|
|
|
|
if self.window_is_active() {
|
|
if let Some(event) = self.window.last_mouse_moved_event.clone() {
|
|
self.dispatch_event(event, true);
|
|
}
|
|
}
|
|
|
|
Ok(scene)
|
|
}
|
|
|
|
pub fn rect_for_text_range(&self, range_utf16: Range<usize>) -> Option<RectF> {
|
|
let root_view_id = self.window.root_view().id();
|
|
self.window
|
|
.rendered_views
|
|
.get(&root_view_id)?
|
|
.rect_for_text_range(range_utf16, self)
|
|
.log_err()
|
|
.flatten()
|
|
}
|
|
|
|
pub fn debug_elements(&self) -> Option<json::Value> {
|
|
let view = self.window.root_view();
|
|
Some(json!({
|
|
"root_view": view.debug_json(self),
|
|
"root_element": self.window.rendered_views.get(&view.id())
|
|
.and_then(|root_element| {
|
|
root_element.debug(self).log_err()
|
|
})
|
|
}))
|
|
}
|
|
|
|
pub fn set_window_title(&mut self, title: &str) {
|
|
self.window.platform_window.set_title(title);
|
|
}
|
|
|
|
pub fn set_window_edited(&mut self, edited: bool) {
|
|
self.window.platform_window.set_edited(edited);
|
|
}
|
|
|
|
pub fn is_topmost_window_for_position(&self, position: Vector2F) -> bool {
|
|
self.window
|
|
.platform_window
|
|
.is_topmost_for_position(position)
|
|
}
|
|
|
|
pub fn activate_window(&self) {
|
|
self.window.platform_window.activate();
|
|
}
|
|
|
|
pub fn window_is_active(&self) -> bool {
|
|
self.window.is_active
|
|
}
|
|
|
|
pub fn window_is_fullscreen(&self) -> bool {
|
|
self.window.is_fullscreen
|
|
}
|
|
|
|
pub(crate) fn handle_dispatch_action_from_effect(
|
|
&mut self,
|
|
view_id: Option<usize>,
|
|
action: &dyn Action,
|
|
) -> bool {
|
|
if let Some(view_id) = view_id {
|
|
self.halt_action_dispatch = false;
|
|
self.visit_dispatch_path(view_id, |view_id, capture_phase, cx| {
|
|
cx.update_any_view(view_id, |view, cx| {
|
|
let type_id = view.as_any().type_id();
|
|
if let Some((name, mut handlers)) = cx
|
|
.actions_mut(capture_phase)
|
|
.get_mut(&type_id)
|
|
.and_then(|h| h.remove_entry(&action.id()))
|
|
{
|
|
for handler in handlers.iter_mut().rev() {
|
|
cx.halt_action_dispatch = true;
|
|
handler(view, action, cx, view_id);
|
|
if cx.halt_action_dispatch {
|
|
break;
|
|
}
|
|
}
|
|
cx.actions_mut(capture_phase)
|
|
.get_mut(&type_id)
|
|
.unwrap()
|
|
.insert(name, handlers);
|
|
}
|
|
});
|
|
|
|
!cx.halt_action_dispatch
|
|
});
|
|
}
|
|
|
|
if !self.halt_action_dispatch {
|
|
self.halt_action_dispatch = self.dispatch_global_action_any(action);
|
|
}
|
|
|
|
self.pending_effects
|
|
.push_back(Effect::ActionDispatchNotification {
|
|
action_id: action.id(),
|
|
});
|
|
self.halt_action_dispatch
|
|
}
|
|
|
|
/// Returns an iterator over all of the view ids from the passed view up to the root of the window
|
|
/// Includes the passed view itself
|
|
pub(crate) fn ancestors(&self, mut view_id: usize) -> impl Iterator<Item = usize> + '_ {
|
|
std::iter::once(view_id)
|
|
.into_iter()
|
|
.chain(std::iter::from_fn(move || {
|
|
if let Some(ParentId::View(parent_id)) =
|
|
self.parents.get(&(self.window_id, view_id))
|
|
{
|
|
view_id = *parent_id;
|
|
Some(view_id)
|
|
} else {
|
|
None
|
|
}
|
|
}))
|
|
}
|
|
|
|
/// Returns the id of the parent of the given view, or none if the given
|
|
/// view is the root.
|
|
pub(crate) fn parent(&self, view_id: usize) -> Option<usize> {
|
|
if let Some(ParentId::View(view_id)) = self.parents.get(&(self.window_id, view_id)) {
|
|
Some(*view_id)
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
|
|
// Traverses the parent tree. Walks down the tree toward the passed
|
|
// view calling visit with true. Then walks back up the tree calling visit with false.
|
|
// If `visit` returns false this function will immediately return.
|
|
fn visit_dispatch_path(
|
|
&mut self,
|
|
view_id: usize,
|
|
mut visit: impl FnMut(usize, bool, &mut WindowContext) -> bool,
|
|
) {
|
|
// List of view ids from the leaf to the root of the window
|
|
let path = self.ancestors(view_id).collect::<Vec<_>>();
|
|
|
|
// Walk down from the root to the leaf calling visit with capture_phase = true
|
|
for view_id in path.iter().rev() {
|
|
if !visit(*view_id, true, self) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
// Walk up from the leaf to the root calling visit with capture_phase = false
|
|
for view_id in path.iter() {
|
|
if !visit(*view_id, false, self) {
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
pub fn focused_view_id(&self) -> Option<usize> {
|
|
self.window.focused_view_id
|
|
}
|
|
|
|
pub fn is_child_focused(&self, view: &AnyViewHandle) -> bool {
|
|
if let Some(focused_view_id) = self.focused_view_id() {
|
|
self.ancestors(focused_view_id)
|
|
.skip(1) // Skip self id
|
|
.any(|parent| parent == view.view_id)
|
|
} else {
|
|
false
|
|
}
|
|
}
|
|
|
|
pub fn window_bounds(&self) -> WindowBounds {
|
|
self.window.platform_window.bounds()
|
|
}
|
|
|
|
pub fn window_appearance(&self) -> Appearance {
|
|
self.window.appearance
|
|
}
|
|
|
|
pub fn window_display_uuid(&self) -> Option<Uuid> {
|
|
self.window.platform_window.screen().display_uuid()
|
|
}
|
|
|
|
pub fn show_character_palette(&self) {
|
|
self.window.platform_window.show_character_palette();
|
|
}
|
|
|
|
pub fn minimize_window(&self) {
|
|
self.window.platform_window.minimize();
|
|
}
|
|
|
|
pub fn zoom_window(&self) {
|
|
self.window.platform_window.zoom();
|
|
}
|
|
|
|
pub fn toggle_full_screen(&self) {
|
|
self.window.platform_window.toggle_full_screen();
|
|
}
|
|
|
|
pub fn prompt(
|
|
&self,
|
|
level: PromptLevel,
|
|
msg: &str,
|
|
answers: &[&str],
|
|
) -> oneshot::Receiver<usize> {
|
|
self.window.platform_window.prompt(level, msg, answers)
|
|
}
|
|
|
|
pub fn replace_root_view<V, F>(&mut self, build_root_view: F) -> ViewHandle<V>
|
|
where
|
|
V: View,
|
|
F: FnOnce(&mut ViewContext<V>) -> V,
|
|
{
|
|
let root_view = self
|
|
.build_and_insert_view(ParentId::Root, |cx| Some(build_root_view(cx)))
|
|
.unwrap();
|
|
self.window.root_view = Some(root_view.clone().into_any());
|
|
self.window.focused_view_id = Some(root_view.id());
|
|
root_view
|
|
}
|
|
|
|
pub(crate) fn build_and_insert_view<T, F>(
|
|
&mut self,
|
|
parent_id: ParentId,
|
|
build_view: F,
|
|
) -> Option<ViewHandle<T>>
|
|
where
|
|
T: View,
|
|
F: FnOnce(&mut ViewContext<T>) -> Option<T>,
|
|
{
|
|
let window_id = self.window_id;
|
|
let view_id = post_inc(&mut self.next_entity_id);
|
|
// Make sure we can tell child views about their parentu
|
|
self.parents.insert((window_id, view_id), parent_id);
|
|
let mut cx = ViewContext::mutable(self, view_id);
|
|
let handle = if let Some(view) = build_view(&mut cx) {
|
|
self.views.insert((window_id, view_id), Box::new(view));
|
|
self.window
|
|
.invalidation
|
|
.get_or_insert_with(Default::default)
|
|
.updated
|
|
.insert(view_id);
|
|
Some(ViewHandle::new(window_id, view_id, &self.ref_counts))
|
|
} else {
|
|
self.parents.remove(&(window_id, view_id));
|
|
None
|
|
};
|
|
handle
|
|
}
|
|
}
|
|
|
|
pub struct RenderParams {
|
|
pub view_id: usize,
|
|
pub titlebar_height: f32,
|
|
pub hovered_region_ids: HashSet<MouseRegionId>,
|
|
pub clicked_region_ids: Option<(HashSet<MouseRegionId>, MouseButton)>,
|
|
pub refreshing: bool,
|
|
pub appearance: Appearance,
|
|
}
|
|
|
|
#[derive(Clone, Copy, Debug, Default, Eq, PartialEq)]
|
|
pub enum Axis {
|
|
#[default]
|
|
Horizontal,
|
|
Vertical,
|
|
}
|
|
|
|
impl Axis {
|
|
pub fn invert(self) -> Self {
|
|
match self {
|
|
Self::Horizontal => Self::Vertical,
|
|
Self::Vertical => Self::Horizontal,
|
|
}
|
|
}
|
|
|
|
pub fn component(&self, point: Vector2F) -> f32 {
|
|
match self {
|
|
Self::Horizontal => point.x(),
|
|
Self::Vertical => point.y(),
|
|
}
|
|
}
|
|
}
|
|
|
|
impl ToJson for Axis {
|
|
fn to_json(&self) -> serde_json::Value {
|
|
match self {
|
|
Axis::Horizontal => json!("horizontal"),
|
|
Axis::Vertical => json!("vertical"),
|
|
}
|
|
}
|
|
}
|
|
|
|
impl StaticColumnCount for Axis {}
|
|
impl Bind for Axis {
|
|
fn bind(&self, statement: &Statement, start_index: i32) -> anyhow::Result<i32> {
|
|
match self {
|
|
Axis::Horizontal => "Horizontal",
|
|
Axis::Vertical => "Vertical",
|
|
}
|
|
.bind(statement, start_index)
|
|
}
|
|
}
|
|
|
|
impl Column for Axis {
|
|
fn column(statement: &mut Statement, start_index: i32) -> anyhow::Result<(Self, i32)> {
|
|
String::column(statement, start_index).and_then(|(axis_text, next_index)| {
|
|
Ok((
|
|
match axis_text.as_str() {
|
|
"Horizontal" => Axis::Horizontal,
|
|
"Vertical" => Axis::Vertical,
|
|
_ => bail!("Stored serialized item kind is incorrect"),
|
|
},
|
|
next_index,
|
|
))
|
|
})
|
|
}
|
|
}
|
|
|
|
pub trait Vector2FExt {
|
|
fn along(self, axis: Axis) -> f32;
|
|
}
|
|
|
|
impl Vector2FExt for Vector2F {
|
|
fn along(self, axis: Axis) -> f32 {
|
|
match axis {
|
|
Axis::Horizontal => self.x(),
|
|
Axis::Vertical => self.y(),
|
|
}
|
|
}
|
|
}
|
|
|
|
#[derive(Copy, Clone, Debug)]
|
|
pub struct SizeConstraint {
|
|
pub min: Vector2F,
|
|
pub max: Vector2F,
|
|
}
|
|
|
|
impl SizeConstraint {
|
|
pub fn new(min: Vector2F, max: Vector2F) -> Self {
|
|
Self { min, max }
|
|
}
|
|
|
|
pub fn strict(size: Vector2F) -> Self {
|
|
Self {
|
|
min: size,
|
|
max: size,
|
|
}
|
|
}
|
|
|
|
pub fn strict_along(axis: Axis, max: f32) -> Self {
|
|
match axis {
|
|
Axis::Horizontal => Self {
|
|
min: vec2f(max, 0.0),
|
|
max: vec2f(max, f32::INFINITY),
|
|
},
|
|
Axis::Vertical => Self {
|
|
min: vec2f(0.0, max),
|
|
max: vec2f(f32::INFINITY, max),
|
|
},
|
|
}
|
|
}
|
|
|
|
pub fn max_along(&self, axis: Axis) -> f32 {
|
|
match axis {
|
|
Axis::Horizontal => self.max.x(),
|
|
Axis::Vertical => self.max.y(),
|
|
}
|
|
}
|
|
|
|
pub fn min_along(&self, axis: Axis) -> f32 {
|
|
match axis {
|
|
Axis::Horizontal => self.min.x(),
|
|
Axis::Vertical => self.min.y(),
|
|
}
|
|
}
|
|
|
|
pub fn constrain(&self, size: Vector2F) -> Vector2F {
|
|
vec2f(
|
|
size.x().min(self.max.x()).max(self.min.x()),
|
|
size.y().min(self.max.y()).max(self.min.y()),
|
|
)
|
|
}
|
|
}
|
|
|
|
impl Default for SizeConstraint {
|
|
fn default() -> Self {
|
|
SizeConstraint {
|
|
min: Vector2F::zero(),
|
|
max: Vector2F::splat(f32::INFINITY),
|
|
}
|
|
}
|
|
}
|
|
|
|
impl ToJson for SizeConstraint {
|
|
fn to_json(&self) -> serde_json::Value {
|
|
json!({
|
|
"min": self.min.to_json(),
|
|
"max": self.max.to_json(),
|
|
})
|
|
}
|
|
}
|
|
|
|
pub struct ChildView {
|
|
view_id: usize,
|
|
view_name: &'static str,
|
|
}
|
|
|
|
impl ChildView {
|
|
pub fn new(view: &AnyViewHandle, cx: &AppContext) -> Self {
|
|
let view_name = cx.view_ui_name(view.window_id(), view.id()).unwrap();
|
|
Self {
|
|
view_id: view.id(),
|
|
view_name,
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<V: View> Drawable<V> for ChildView {
|
|
type LayoutState = ();
|
|
type PaintState = ();
|
|
|
|
fn layout(
|
|
&mut self,
|
|
constraint: SizeConstraint,
|
|
_: &mut V,
|
|
cx: &mut ViewContext<V>,
|
|
) -> (Vector2F, Self::LayoutState) {
|
|
if let Some(mut rendered_view) = cx.window.rendered_views.remove(&self.view_id) {
|
|
let size = rendered_view
|
|
.layout(constraint, cx)
|
|
.log_err()
|
|
.unwrap_or(Vector2F::zero());
|
|
cx.window.rendered_views.insert(self.view_id, rendered_view);
|
|
(size, ())
|
|
} else {
|
|
log::error!(
|
|
"layout called on a ChildView element whose underlying view was dropped (view_id: {}, name: {:?})",
|
|
self.view_id,
|
|
self.view_name
|
|
);
|
|
(Vector2F::zero(), ())
|
|
}
|
|
}
|
|
|
|
fn paint(
|
|
&mut self,
|
|
scene: &mut SceneBuilder,
|
|
bounds: RectF,
|
|
visible_bounds: RectF,
|
|
_: &mut Self::LayoutState,
|
|
_: &mut V,
|
|
cx: &mut ViewContext<V>,
|
|
) {
|
|
if let Some(mut rendered_view) = cx.window.rendered_views.remove(&self.view_id) {
|
|
rendered_view
|
|
.paint(scene, bounds.origin(), visible_bounds, cx)
|
|
.log_err();
|
|
cx.window.rendered_views.insert(self.view_id, rendered_view);
|
|
} else {
|
|
log::error!(
|
|
"paint called on a ChildView element whose underlying view was dropped (view_id: {}, name: {:?})",
|
|
self.view_id,
|
|
self.view_name
|
|
);
|
|
}
|
|
}
|
|
|
|
fn rect_for_text_range(
|
|
&self,
|
|
range_utf16: Range<usize>,
|
|
_: RectF,
|
|
_: RectF,
|
|
_: &Self::LayoutState,
|
|
_: &Self::PaintState,
|
|
_: &V,
|
|
cx: &ViewContext<V>,
|
|
) -> Option<RectF> {
|
|
if let Some(rendered_view) = cx.window.rendered_views.get(&self.view_id) {
|
|
rendered_view
|
|
.rect_for_text_range(range_utf16, &cx.window_context)
|
|
.log_err()
|
|
.flatten()
|
|
} else {
|
|
log::error!(
|
|
"rect_for_text_range called on a ChildView element whose underlying view was dropped (view_id: {}, name: {:?})",
|
|
self.view_id,
|
|
self.view_name
|
|
);
|
|
None
|
|
}
|
|
}
|
|
|
|
fn debug(
|
|
&self,
|
|
bounds: RectF,
|
|
_: &Self::LayoutState,
|
|
_: &Self::PaintState,
|
|
_: &V,
|
|
cx: &ViewContext<V>,
|
|
) -> serde_json::Value {
|
|
json!({
|
|
"type": "ChildView",
|
|
"view_id": self.view_id,
|
|
"bounds": bounds.to_json(),
|
|
"view": if let Some(view) = cx.views.get(&(cx.window_id, self.view_id)) {
|
|
view.debug_json(cx)
|
|
} else {
|
|
json!(null)
|
|
},
|
|
"child": if let Some(element) = cx.window.rendered_views.get(&self.view_id) {
|
|
element.debug(&cx.window_context).log_err().unwrap_or_else(|| json!(null))
|
|
} else {
|
|
json!(null)
|
|
}
|
|
})
|
|
}
|
|
}
|