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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="A temporary state of an application. There’s a stack of these, with the most recent being the active one."><meta name="keywords" content="rust, rustlang, rust-lang, State"><title>State in widgetry - Rust</title><link rel="stylesheet" type="text/css" href="../normalize.css"><link rel="stylesheet" type="text/css" href="../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../light.css" id="themeStyle"><link rel="stylesheet" type="text/css" href="../dark.css" disabled ><link rel="stylesheet" type="text/css" href="../ayu.css" disabled ><script id="default-settings"></script><script src="../storage.js"></script><script src="../crates.js"></script><noscript><link rel="stylesheet" href="../noscript.css"></noscript><link rel="icon" type="image/svg+xml" href="../favicon.svg">
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<link rel="alternate icon" type="image/png" href="../favicon-32x32.png"><style type="text/css">#crate-search{background-image:url("../down-arrow.svg");}</style></head><body class="rustdoc trait"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu" role="button">☰</div><a href='../widgetry/index.html'><div class='logo-container rust-logo'><img src='../rust-logo.png' alt='logo'></div></a><h2 class="location">Trait State</h2><div class="sidebar-elems"><div class="block items"><h3 class="sidebar-title"><a href="#required-methods">Required Methods</a></h3><div class="sidebar-links"><a href="#tymethod.draw">draw</a><a href="#tymethod.event">event</a></div><h3 class="sidebar-title"><a href="#provided-methods">Provided Methods</a></h3><div class="sidebar-links"><a href="#method.draw_baselayer">draw_baselayer</a><a href="#method.on_destroy">on_destroy</a></div><h3 class="sidebar-title"><a href="#implementations">Methods</a></h3><div class="sidebar-links"><a href="#method.downcast">downcast</a><a href="#method.downcast_mut">downcast_mut</a><a href="#method.downcast_rc">downcast_rc</a><a href="#method.downcast_ref">downcast_ref</a><a href="#method.is">is</a></div><h3 class="sidebar-title"><a href="#implementors">Implementors</a></h3></div><h2 class="location">Other items in<br><a href="index.html">widgetry</a></h2><div id="sidebar-vars" data-name="State" data-ty="trait" data-relpath=""></div><script defer src="sidebar-items.js"></script></div></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!" aria-haspopup="menu" title="themes"><img src="../brush.svg" width="18" height="18" alt="Pick another theme!"></button><div id="theme-choices" role="menu"></div></div><nav class="sub"><form class="search-form"><div class="search-container"><div><select id="crate-search"><option value="All crates">All crates</option></select><input class="search-input" name="search" disabled autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"></div><button type="button" id="help-button" title="help">?</button><a id="settings-menu" href="../settings.html" title="settings"><img src="../wheel.svg" width="18" height="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><h1 class="fqn"><span class="in-band">Trait <a href="index.html">widgetry</a>::<wbr><a class="trait" href="#">State</a><button id="copy-path" onclick="copy_path(this)" title="copy path"><img src="../clipboard.svg" width="19" height="18" alt="Copy item import" title="Copy item import to clipboard"></button></span><span class="out-of-band"><span id="render-detail"><a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">−</span>]</a></span><a class="srclink" href="../src/widgetry/app_state.rs.html#171-185" title="goto source code">[src]</a></span></h1><div class="docblock type-decl"><pre class="rust trait">pub trait State<A>: Downcast {
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fn <a href="#tymethod.event" class="fnname">event</a>(<br> &mut self, <br> ctx: &mut <a class="struct" href="event_ctx/struct.EventCtx.html" title="struct widgetry::event_ctx::EventCtx">EventCtx</a><'_>, <br> shared_app_state: <a class="primitive" href="https://doc.rust-lang.org/1.54.0/std/primitive.reference.html">&mut </a>A<br> ) -> <a class="enum" href="app_state/enum.Transition.html" title="enum widgetry::app_state::Transition">Transition</a><A>;
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<div class="item-spacer"></div> fn <a href="#tymethod.draw" class="fnname">draw</a>(&self, g: &mut <a class="struct" href="drawing/struct.GfxCtx.html" title="struct widgetry::drawing::GfxCtx">GfxCtx</a><'_>, shared_app_state: <a class="primitive" href="https://doc.rust-lang.org/1.54.0/std/primitive.reference.html">&</a>A);
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fn <a href="#method.draw_baselayer" class="fnname">draw_baselayer</a>(&self) -> <a class="enum" href="app_state/enum.DrawBaselayer.html" title="enum widgetry::app_state::DrawBaselayer">DrawBaselayer</a> { ... }
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<div class="item-spacer"></div> fn <a href="#method.on_destroy" class="fnname">on_destroy</a>(&mut self, _: &mut <a class="struct" href="event_ctx/struct.EventCtx.html" title="struct widgetry::event_ctx::EventCtx">EventCtx</a><'_>, _: <a class="primitive" href="https://doc.rust-lang.org/1.54.0/std/primitive.reference.html">&mut </a>A) { ... }
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}</pre></div><details class="rustdoc-toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>A temporary state of an application. There’s a stack of these, with the most recent being the
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active one.</p>
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</div></details><h2 id="required-methods" class="small-section-header">Required methods<a href="#required-methods" class="anchor"></a></h2><div class="methods"><details class="rustdoc-toggle" open><summary><div id="tymethod.event" class="method has-srclink"><h4 class="code-header">fn <a href="#tymethod.event" class="fnname">event</a>(<br> &mut self, <br> ctx: &mut <a class="struct" href="event_ctx/struct.EventCtx.html" title="struct widgetry::event_ctx::EventCtx">EventCtx</a><'_>, <br> shared_app_state: <a class="primitive" href="https://doc.rust-lang.org/1.54.0/std/primitive.reference.html">&mut </a>A<br>) -> <a class="enum" href="app_state/enum.Transition.html" title="enum widgetry::app_state::Transition">Transition</a><A></h4><a class="srclink" href="../src/widgetry/app_state.rs.html#173" title="goto source code">[src]</a></div></summary><div class="docblock"><p>Respond to a UI event, such as input or time passing.</p>
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</div></details><details class="rustdoc-toggle" open><summary><div id="tymethod.draw" class="method has-srclink"><h4 class="code-header">fn <a href="#tymethod.draw" class="fnname">draw</a>(&self, g: &mut <a class="struct" href="drawing/struct.GfxCtx.html" title="struct widgetry::drawing::GfxCtx">GfxCtx</a><'_>, shared_app_state: <a class="primitive" href="https://doc.rust-lang.org/1.54.0/std/primitive.reference.html">&</a>A)</h4><a class="srclink" href="../src/widgetry/app_state.rs.html#175" title="goto source code">[src]</a></div></summary><div class="docblock"><p>Draw</p>
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</div></details></div><h2 id="provided-methods" class="small-section-header">Provided methods<a href="#provided-methods" class="anchor"></a></h2><div class="methods"><details class="rustdoc-toggle" open><summary><div id="method.draw_baselayer" class="method has-srclink"><h4 class="code-header">fn <a href="#method.draw_baselayer" class="fnname">draw_baselayer</a>(&self) -> <a class="enum" href="app_state/enum.DrawBaselayer.html" title="enum widgetry::app_state::DrawBaselayer">DrawBaselayer</a></h4><a class="srclink" href="../src/widgetry/app_state.rs.html#178-180" title="goto source code">[src]</a></div></summary><div class="docblock"><p>Specifies what to draw before draw()</p>
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</div></details><details class="rustdoc-toggle" open><summary><div id="method.on_destroy" class="method has-srclink"><h4 class="code-header">fn <a href="#method.on_destroy" class="fnname">on_destroy</a>(&mut self, _: &mut <a class="struct" href="event_ctx/struct.EventCtx.html" title="struct widgetry::event_ctx::EventCtx">EventCtx</a><'_>, _: <a class="primitive" href="https://doc.rust-lang.org/1.54.0/std/primitive.reference.html">&mut </a>A)</h4><a class="srclink" href="../src/widgetry/app_state.rs.html#183" title="goto source code">[src]</a></div></summary><div class="docblock"><p>Before this state is popped or replaced, call this.</p>
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</div></details></div><h2 id="implementations" class="small-section-header">Implementations<a href="#implementations" class="anchor"></a></h2><details class="rustdoc-toggle implementors-toggle" open><summary><div id="impl" class="impl has-srclink"><h3 class="code-header in-band">impl<A> dyn <a class="trait" href="app_state/trait.State.html" title="trait widgetry::app_state::State">State</a><A> <span class="where fmt-newline">where<br> A: <a class="trait" href="https://doc.rust-lang.org/1.54.0/core/any/trait.Any.html" title="trait core::any::Any">Any</a> + 'static, </span></h3><a href="#impl" class="anchor"></a><a class="srclink" href="../src/widgetry/app_state.rs.html#187" title="goto source code">[src]</a></div></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><div id="method.is" class="method has-srclink"><h4 class="code-header">pub fn <a href="#method.is" class="fnname">is</a><__T: <a class="trait" href="app_state/trait.State.html" title="trait widgetry::app_state::State">State</a><A>>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.54.0/std/primitive.bool.html">bool</a></h4><a href="#method.is" class="anchor"></a><a class="srclink" href="../src/widgetry/app_state.rs.html#187" title="goto source code">[src]</a></div></summary><div class="docblock"><p>Returns true if the trait object wraps an object of type <code>__T</code>.</p>
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</div></details><details class="rustdoc-toggle method-toggle" open><summary><div id="method.downcast" class="method has-srclink"><h4 class="code-header">pub fn <a href="#method.downcast" class="fnname">downcast</a><__T: <a class="trait" href="app_state/trait.State.html" title="trait widgetry::app_state::State">State</a><A>>(self: <a class="struct" href="https://doc.rust-lang.org/1.54.0/alloc/boxed/struct.Box.html" title="struct alloc::boxed::Box">Box</a><Self>) -> <a class="enum" href="https://doc.rust-lang.org/1.54.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="struct" href="https://doc.rust-lang.org/1.54.0/alloc/boxed/struct.Box.html" title="struct alloc::boxed::Box">Box</a><__T>, <a class="struct" href="https://doc.rust-lang.org/1.54.0/alloc/boxed/struct.Box.html" title="struct alloc::boxed::Box">Box</a><Self>></h4><a href="#method.downcast" class="anchor"></a><a class="srclink" href="../src/widgetry/app_state.rs.html#187" title="goto source code">[src]</a></div></summary><div class="docblock"><p>Returns a boxed object from a boxed trait object if the underlying object is of type
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<code>__T</code>. Returns the original boxed trait if it isn’t.</p>
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</div></details><details class="rustdoc-toggle method-toggle" open><summary><div id="method.downcast_rc" class="method has-srclink"><h4 class="code-header">pub fn <a href="#method.downcast_rc" class="fnname">downcast_rc</a><__T: <a class="trait" href="app_state/trait.State.html" title="trait widgetry::app_state::State">State</a><A>>(self: <a class="struct" href="https://doc.rust-lang.org/1.54.0/alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><Self>) -> <a class="enum" href="https://doc.rust-lang.org/1.54.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="struct" href="https://doc.rust-lang.org/1.54.0/alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><__T>, <a class="struct" href="https://doc.rust-lang.org/1.54.0/alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><Self>></h4><a href="#method.downcast_rc" class="anchor"></a><a class="srclink" href="../src/widgetry/app_state.rs.html#187" title="goto source code">[src]</a></div></summary><div class="docblock"><p>Returns an <code>Rc</code>-ed object from an <code>Rc</code>-ed trait object if the underlying object is of
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type <code>__T</code>. Returns the original <code>Rc</code>-ed trait if it isn’t.</p>
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</div></details><details class="rustdoc-toggle method-toggle" open><summary><div id="method.downcast_ref" class="method has-srclink"><h4 class="code-header">pub fn <a href="#method.downcast_ref" class="fnname">downcast_ref</a><__T: <a class="trait" href="app_state/trait.State.html" title="trait widgetry::app_state::State">State</a><A>>(&self) -> <a class="enum" href="https://doc.rust-lang.org/1.54.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/1.54.0/std/primitive.reference.html">&</a>__T></h4><a href="#method.downcast_ref" class="anchor"></a><a class="srclink" href="../src/widgetry/app_state.rs.html#187" title="goto source code">[src]</a></div></summary><div class="docblock"><p>Returns a reference to the object within the trait object if it is of type <code>__T</code>, or
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<code>None</code> if it isn’t.</p>
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</div></details><details class="rustdoc-toggle method-toggle" open><summary><div id="method.downcast_mut" class="method has-srclink"><h4 class="code-header">pub fn <a href="#method.downcast_mut" class="fnname">downcast_mut</a><__T: <a class="trait" href="app_state/trait.State.html" title="trait widgetry::app_state::State">State</a><A>>(&mut self) -> <a class="enum" href="https://doc.rust-lang.org/1.54.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/1.54.0/std/primitive.reference.html">&mut </a>__T></h4><a href="#method.downcast_mut" class="anchor"></a><a class="srclink" href="../src/widgetry/app_state.rs.html#187" title="goto source code">[src]</a></div></summary><div class="docblock"><p>Returns a mutable reference to the object within the trait object if it is of type
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<code>__T</code>, or <code>None</code> if it isn’t.</p>
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</div></details></div></details><h2 id="implementors" class="small-section-header">Implementors<a href="#implementors" class="anchor"></a></h2><div class="item-list" id="implementors-list"><details class="rustdoc-toggle implementors-toggle"><summary><div id="impl-State%3CA%3E" class="impl has-srclink"><h3 class="code-header in-band">impl<A: 'static> <a class="trait" href="app_state/trait.State.html" title="trait widgetry::app_state::State">State</a><A> for <a class="struct" href="app_state/struct.SimpleStateWrapper.html" title="struct widgetry::app_state::SimpleStateWrapper">SimpleStateWrapper</a><A></h3><a href="#impl-State%3CA%3E" class="anchor"></a><a class="srclink" href="../src/widgetry/app_state.rs.html#273-299" title="goto source code">[src]</a></div></summary><div class="impl-items"><div id="method.event" class="method trait-impl has-srclink"><h4 class="code-header">fn <a href="#tymethod.event" class="fnname">event</a>(&mut self, ctx: &mut <a class="struct" href="event_ctx/struct.EventCtx.html" title="struct widgetry::event_ctx::EventCtx">EventCtx</a><'_>, app: <a class="primitive" href="https://doc.rust-lang.org/1.54.0/std/primitive.reference.html">&mut </a>A) -> <a class="enum" href="app_state/enum.Transition.html" title="enum widgetry::app_state::Transition">Transition</a><A></h4><a href="#method.event" class="anchor"></a><a class="srclink" href="../src/widgetry/app_state.rs.html#274-289" title="goto source code">[src]</a></div><div id="method.draw" class="method trait-impl has-srclink"><h4 class="code-header">fn <a href="#tymethod.draw" class="fnname">draw</a>(&self, g: &mut <a class="struct" href="drawing/struct.GfxCtx.html" title="struct widgetry::drawing::GfxCtx">GfxCtx</a><'_>, app: <a class="primitive" href="https://doc.rust-lang.org/1.54.0/std/primitive.reference.html">&</a>A)</h4><a href="#method.draw" class="anchor"></a><a class="srclink" href="../src/widgetry/app_state.rs.html#291-295" title="goto source code">[src]</a></div><div id="method.draw_baselayer-1" class="method trait-impl has-srclink"><h4 class="code-header">fn <a href="#method.draw_baselayer" class="fnname">draw_baselayer</a>(&self) -> <a class="enum" href="app_state/enum.DrawBaselayer.html" title="enum widgetry::app_state::DrawBaselayer">DrawBaselayer</a></h4><a href="#method.draw_baselayer-1" class="anchor"></a><a class="srclink" href="../src/widgetry/app_state.rs.html#296-298" title="goto source code">[src]</a></div></div></details></div><script type="text/javascript" src="../implementors/widgetry/trait.State.js" async></script></section><section id="search" class="content hidden"></section><div id="rustdoc-vars" data-root-path="../" data-current-crate="widgetry" data-search-index-js="../search-index.js" data-search-js="../search.js"></div><script src="../main.js"></script></body></html> |