<!DOCTYPE html><htmllang="en"><head><metacharset="utf-8"><metaname="viewport"content="width=device-width, initial-scale=1.0"><metaname="generator"content="rustdoc"><metaname="description"content="API documentation for the Rust `Canvas` struct in crate `widgetry`."><metaname="keywords"content="rust, rustlang, rust-lang, Canvas"><title>Canvas in widgetry::canvas - Rust</title><linkrel="stylesheet"type="text/css"href="../../normalize.css"><linkrel="stylesheet"type="text/css"href="../../rustdoc.css"id="mainThemeStyle"><linkrel="stylesheet"type="text/css"href="../../light.css"id="themeStyle"><linkrel="stylesheet"type="text/css"href="../../dark.css"disabled><linkrel="stylesheet"type="text/css"href="../../ayu.css"disabled><scriptid="default-settings"></script><scriptsrc="../../storage.js"></script><scriptsrc="../../crates.js"></script><noscript><linkrel="stylesheet"href="../../noscript.css"></noscript><linkrel="icon"type="image/svg+xml"href="../../favicon.svg">
<linkrel="alternate icon"type="image/png"href="../../favicon-32x32.png"><styletype="text/css">#crate-search{background-image:url("../../down-arrow.svg");}</style></head><bodyclass="rustdoc struct"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><navclass="sidebar"><divclass="sidebar-menu"role="button">☰</div><ahref='../../widgetry/index.html'><divclass='logo-container rust-logo'><imgsrc='../../rust-logo.png'alt='logo'></div></a><h2class="location">Struct Canvas</h2><divclass="sidebar-elems"><divclass="block items"><h3class="sidebar-title"><ahref="#fields">Fields</a></h3><divclass="sidebar-links"><ahref="#structfield.cam_x">cam_x</a><ahref="#structfield.cam_y">cam_y</a><ahref="#structfield.cam_zoom">cam_zoom</a><ahref="#structfield.covered_areas">covered_areas</a><ahref="#structfield.cursor">cursor</a><ahref="#structfield.drag_canvas_from">drag_canvas_from</a><ahref="#structfield.drag_just_ended">drag_just_ended</a><ahref="#structfield.keys_held">keys_held</a><ahref="#structfield.map_dims">map_dims</a><ahref="#structfield.settings">settings</a><ahref="#structfield.window_has_cursor">window_has_cursor</a><ahref="#structfield.window_height">window_height</a><ahref="#structfield.window_width">window_width</a></div><h3class="sidebar-title"><ahref="#implementations">Methods</a></h3><divclass="sidebar-links"><ahref="#method.align_window">align_window</a><ahref="#method.center_on_map_pt">center_on_map_pt</a><ahref="#method.center_to_map_pt">center_to_map_pt</a><ahref="#method.center_to_screen_pt">center_to_screen_pt</a><ahref="#method.get_cursor">get_cursor</a><ahref="#method.get_cursor_in_map_space">get_cursor_in_map_space</a><ahref="#method.get_cursor_in_screen_space">get_cursor_in_screen_space</a><ahref="#method.get_inner_bounds">get_inner_bounds</a><ahref="#method.get_map_bounds">get_map_bounds</a><ahref="#method.get_screen_bounds">get_screen_bounds</a><ahref="#method.get_window_dims">get_window_dims</a><ahref="#method.handle_event">handle_event</a><ahref="#method.map_to_screen">map_to_screen</a><ahref="#method.mark_covered_area">mark_covered_area</a><ahref="#method.min_zoom">min_zoom</a><ahref="#method.new">new</a><ahref="#method.screen_to_map">screen_to_map</a><ahref="#method.start_drawing">start_drawing</a><ahref="#method.zoom">zoom</a></div><h3class="sidebar-title"><ahref="#synthetic-implementations">Auto Trait Implementations</a></h3><divclass="sidebar-links"><ahref="#impl-RefUnwindSafe">!RefUnwindSafe</a><ahref="#impl-Send">Send</a><ahref="#impl-Sync">!Sync</a><ahref="#impl-Unpin">Unpin</a><ahref="#impl-UnwindSafe">UnwindSafe</a></div><h3class="sidebar-title"><ahref="#blanket-implementations">Blanket Implementations</a></h3><divclass="sidebar-links"><ahref="#impl-Any">Any</a><ahref="#impl-Borrow%3CT%3E">Borrow<T></a><ahref="#impl-BorrowMut%3CT%3E">BorrowMut<T></a><ahref="#impl-Downcast">Downcast</a><ahref="#impl-DowncastSync">DowncastSync</a><ahref="#impl-From%3CT%3E">From<T></a><ahref="#impl-Into%3CU%3E">Into<U></a><ahref="#impl-Same%3CT%3E">Same<T></a><ahref="#impl-TryFrom%3CU%3E">TryFrom<U></a><ahref="#impl-TryInto%3CU%3E">TryInto<U></a></div></div><h2class="location">Other items in<br><ahref="../index.html">widgetry</a>::<wbr><ahref="index.html">canvas</a></h2><divid="sidebar-vars"data-name="Canvas"data-ty="struct"data-relpath=""></div><scriptdefersrc="sidebar-items.js"></script></div></nav><divclass="theme-picker"><buttonid="theme-picker"aria-label="Pick another theme!"aria-haspopup="menu"title="themes"><imgsrc="../../brush.svg"width="18"height="18"alt="Pick another theme!"></button><divid="theme-choices"role="menu"></div></div><navclass="sub"><formclass="search-form"><divclass="search-container"><div><selectid="crate-search"><optionvalue="All crates">All crates</option></select><inputclass="search-input"name="search"disabledautocomplete="off"spellcheck="false"placeholder="Clicko
then be further <code>downcast</code> into <code>Box<ConcreteType></code> where <code>ConcreteType</code> implements <code>Trait</code>. <ahref="#tymethod.into_any">Read more</a></p>
further <code>downcast</code> into <code>Rc<ConcreteType></code> where <code>ConcreteType</code> implements <code>Trait</code>. <ahref="#tymethod.into_any_rc">Read more</a></p>
further <code>downcast</code> into <code>Arc<ConcreteType></code> where <code>ConcreteType</code> implements <code>Trait</code>. <ahref="#tymethod.into_any_arc">Read more</a></p>
</div></details></div></details><detailsclass="rustdoc-toggle implementors-toggle"><summary><divid="impl-Into%3CU%3E"class="impl has-srclink"><h3class="code-header in-band">impl<T, U><aclass="trait"href="https://doc.rust-lang.org/1.54.0/core/convert/trait.Into.html"title="trait core::convert::Into">Into</a><U> for T <spanclass="where fmt-newline">where<br> U: <aclass="trait"href="https://doc.rust-lang.org/1.54.0/core/convert/trait.From.html"title="trait core::convert::From">From</a><T>, </span></h3><ahref="#impl-Into%3CU%3E"class="anchor"></a><aclass="srclink"href="https://doc.rust-lang.org/1.54.0/src/core/convert/mod.rs.html#533-540"title="goto source code">[src]</a></div></summary><divclass="impl-items"><detailsclass="rustdoc-toggle method-toggle"open><summary><divid="method.into"class="method trait-impl has-srclink"><h4class="code-header">pub fn <ahref="https://doc.rust-lang.org/1.54.0/core/convert/trait.Into.html#tymethod.into"class="fnname">into</a>(self) -> U</h4><ahref="#method.into"class="anchor"></a><aclass="srclink"href="https://doc.rust-lang.org/1.54.0/src/core/convert/mod.rs.html#537"title="goto source code">[src]</a></div></summary><divclass='docblock'><p>Performs the conversion.</p>
</div></details></div></details><detailsclass="rustdoc-toggle implementors-toggle"><summary><divid="impl-Same%3CT%3E"class="impl has-srclink"><h3class="code-header in-band">impl<T> Same<T> for T</h3><ahref="#impl-Same%3CT%3E"class="anchor"></a></div></summary><divclass="impl-items"><detailsclass="rustdoc-toggle"open><summary><divid="associatedtype.Output"class="type trait-impl has-srclink"><h4class="code-header">type <ahref="#associatedtype.Output"class="type">Output</a> = T</h4><ahref="#associatedtype.Output"class="anchor"></a></div></summary><divclass='docblock'><p>Should always be <code>Self</code></p>
</div></details></div></details><detailsclass="rustdoc-toggle implementors-toggle"><summary><divid="impl-TryFrom%3CU%3E"class="impl has-srclink"><h3class="code-header in-band">impl<T, U><aclass="trait"href="https://doc.rust-lang.org/1.54.0/core/convert/trait.TryFrom.html"title="trait core::convert::TryFrom">TryFrom</a><U> for T <spanclass="where fmt-newline">where<br> U: <aclass="trait"href="https://doc.rust-lang.org/1.54.0/core/convert/trait.Into.html"title="trait core::convert::Into">Into</a><T>, </span></h3><ahref="#impl-TryFrom%3CU%3E"class="anchor"></a><aclass="srclink"href="https://doc.rust-lang.org/1.54.0/src/core/convert/mod.rs.html#581-590"title="goto source code">[src]</a></div></summary><divclass="impl-items"><detailsclass="rustdoc-toggle"open><summary><divid="associatedtype.Error"class="type trait-impl has-srclink"><h4class="code-header">type <ahref="https://doc.rust-lang.org/1.54.0/core/convert/trait.TryFrom.html#associatedtype.Error"class="type">Error</a> = <aclass="enum"href="https://doc.rust-lang.org/1.54.0/core/convert/enum.Infallible.html"title="enum core::convert::Infallible">Infallible</a></h4><ahref="#associatedtype.Error"class="anchor"></a></div></summary><divclass='docblock'><p>The type returned in the event of a conversion error.</p>
</div></details><detailsclass="rustdoc-toggle method-toggle"open><summary><divid="method.try_from"class="method trait-impl has-srclink"><h4class="code-header">pub fn <ahref="https://doc.rust-lang.org/1.54.0/core/convert/trait.TryFrom.html#tymethod.try_from"class="fnname">try_from</a>(value: U) -><aclass="enum"href="https://doc.rust-lang.org/1.54.0/core/result/enum.Result.html"title="enum core::result::Result">Result</a><T, <T as <aclass="trait"href="https://doc.rust-lang.org/1.54.0/core/convert/trait.TryFrom.html"title="trait core::convert::TryFrom">TryFrom</a><U>>::<aclass="type"href="https://doc.rust-lang.org/1.54.0/core/convert/trait.TryFrom.html#associatedtype.Error"title="type core::convert::TryFrom::Error">Error</a>></h4><ahref="#method.try_from"class="anchor"></a><aclass="srclink"href="https://doc.rust-lang.org/1.54.0/src/core/convert/mod.rs.html#587"title="goto source code">[src]</a></div></summary><divclass='docblock'><p>Performs the conversion.</p>
</div></details></div></details><detailsclass="rustdoc-toggle implementors-toggle"><summary><divid="impl-TryInto%3CU%3E"class="impl has-srclink"><h3class="code-header in-band">impl<T, U><aclass="trait"href="https://doc.rust-lang.org/1.54.0/core/convert/trait.TryInto.html"title="trait core::convert::TryInto">TryInto</a><U> for T <spanclass="where fmt-newline">where<br> U: <aclass="trait"href="https://doc.rust-lang.org/1.54.0/core/convert/trait.TryFrom.html"title="trait core::convert::TryFrom">TryFrom</a><T>, </span></h3><ahref="#impl-TryInto%3CU%3E"class="anchor"></a><aclass="srclink"href="https://doc.rust-lang.org/1.54.0/src/core/convert/mod.rs.html#567-576"title="goto source code">[src]</a></div></summary><divclass="impl-items"><detailsclass="rustdoc-toggle"open><summary><divid="associatedtype.Error-1"class="type trait-impl has-srclink"><h4class="code-header">type <ahref="https://doc.rust-lang.org/1.54.0/core/convert/trait.TryInto.html#associatedtype.Error"class="type">Error</a> = <U as <aclass="trait"href="https://doc.rust-lang.org/1.54.0/core/convert/trait.TryFrom.html"title="trait core::convert::TryFrom">TryFrom</a><T>>::<aclass="type"href="https://doc.rust-lang.org/1.54.0/core/convert/trait.TryFrom.html#associatedtype.Error"title="type core::convert::TryFrom::Error">Error</a></h4><ahref="#associatedtype.Error-1"class="anchor"></a></div></summary><divclass='docblock'><p>The type returned in the event of a conversion error.</p>
</div></details><detailsclass="rustdoc-toggle method-toggle"open><summary><divid="method.try_into"class="method trait-impl has-srclink"><h4class="code-header">pub fn <ahref="https://doc.rust-lang.org/1.54.0/core/convert/trait.TryInto.html#tymethod.try_into"class="fnname">try_into</a>(self) -><aclass="enum"href="https://doc.rust-lang.org/1.54.0/core/result/enum.Result.html"title="enum core::result::Result">Result</a><U, <U as <aclass="trait"href="https://doc.rust-lang.org/1.54.0/core/convert/trait.TryFrom.html"title="trait core::convert::TryFrom">TryFrom</a><T>>::<aclass="type"href="https://doc.rust-lang.org/1.54.0/core/convert/trait.TryFrom.html#associatedtype.Error"title="type core::convert::TryFrom::Error">Error</a>></h4><ahref="#method.try_into"class="anchor"></a><aclass="srclink"href="https://doc.rust-lang.org/1.54.0/src/core/convert/mod.rs.html#573"title="goto source code">[src]</a></div></summary><divclass='docblock'><p>Performs the conversion.</p>
