<!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 - 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="alternate icon"type="image/png"href="../favicon-16x16.png"><linkrel="alternate icon"type="image/png"href="../favicon-32x32.png"><linkrel="icon"type="image/svg+xml"href="../favicon.svg"><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.center_zoom">center_zoom</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.is_dragging">is_dragging</a><ahref="#method.is_max_zoom">is_max_zoom</a><ahref="#method.is_min_zoom">is_min_zoom</a><ahref="#method.is_unzoomed">is_unzoomed</a><ahref="#method.is_zoomed">is_zoomed</a><ahref="#method.map_to_screen">map_to_screen</a><ahref="#method.mark_covered_area">mark_covered_area</a><ahref="#method.max_zoom">max_zoom</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-tit
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"open><summary><divid="impl-TryFrom%3CU%3E"class="impl has-srclink"><divclass="rightside"><aclass="srclink"href="https://doc.rust-lang.org/1.56.1/src/core/convert/mod.rs.html#583-592"title="goto source code">[src]</a></div><ahref="#impl-TryFrom%3CU%3E"class="anchor"></a><h3class="code-header in-band">impl<T, U><aclass="trait"href="https://doc.rust-lang.org/1.56.1/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/1.56.1/core/convert/trait.Into.html"title="trait core::convert::Into">Into</a><T>, </span></h3></div></summary><divclass="impl-items"><detailsclass="rustdoc-toggle"open><summary><divid="associatedtype.Error"class="type trait-impl has-srclink"><ahref="#associatedtype.Error"class="anchor"></a><h4class="code-header">type <ahref="https://doc.rust-lang.org/1.56.1/core/convert/trait.TryFrom.html#associatedtype.Error"class="type">Error</a> = <aclass="enum"href="https://doc.rust-lang.org/1.56.1/core/convert/enum.Infallible.html"title="enum core::convert::Infallible">Infallible</a></h4></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"><divclass="rightside"><aclass="srclink"href="https://doc.rust-lang.org/1.56.1/src/core/convert/mod.rs.html#589"title="goto source code">[src]</a></div><ahref="#method.try_from"class="anchor"></a><h4class="code-header">pub fn <ahref="https://doc.rust-lang.org/1.56.1/core/convert/trait.TryFrom.html#tymethod.try_from"class="fnname">try_from</a>(value: U) -><aclass="enum"href="https://doc.rust-lang.org/1.56.1/core/result/enum.Result.html"title="enum core::result::Result">Result</a><T, <T as <aclass="trait"href="https://doc.rust-lang.org/1.56.1/core/convert/trait.TryFrom.html"title="trait core::convert::TryFrom">TryFrom</a><U>>::<aclass="type"href="https://doc.rust-lang.org/1.56.1/core/convert/trait.TryFrom.html#associatedtype.Error"title="type core::convert::TryFrom::Error">Error</a>></h4></div></summary><divclass='docblock'><p>Performs the conversion.</p>
</div></details></div></details><detailsclass="rustdoc-toggle implementors-toggle"open><summary><divid="impl-TryInto%3CU%3E"class="impl has-srclink"><divclass="rightside"><aclass="srclink"href="https://doc.rust-lang.org/1.56.1/src/core/convert/mod.rs.html#569-578"title="goto source code">[src]</a></div><ahref="#impl-TryInto%3CU%3E"class="anchor"></a><h3class="code-header in-band">impl<T, U><aclass="trait"href="https://doc.rust-lang.org/1.56.1/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/1.56.1/core/convert/trait.TryFrom.html"title="trait core::convert::TryFrom">TryFrom</a><T>, </span></h3></div></summary><divclass="impl-items"><detailsclass="rustdoc-toggle"open><summary><divid="associatedtype.Error-1"class="type trait-impl has-srclink"><ahref="#associatedtype.Error-1"class="anchor"></a><h4class="code-header">type <ahref="https://doc.rust-lang.org/1.56.1/core/convert/trait.TryInto.html#associatedtype.Error"class="type">Error</a> = <U as <aclass="trait"href="https://doc.rust-lang.org/1.56.1/core/convert/trait.TryFrom.html"title="trait core::convert::TryFrom">TryFrom</a><T>>::<aclass="type"href="https://doc.rust-lang.org/1.56.1/core/convert/trait.TryFrom.html#associatedtype.Error"title="type core::convert::TryFrom::Error">Error</a></h4></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"><divclass="rightside"><aclass="srclink"href="https://doc.rust-lang.org/1.56.1/src/core/convert/mod.rs.html#575"title="goto source code">[src]</a></div><ahref="#method.try_into"class="anchor"></a><h4class="code-header">pub fn <ahref="https://doc.rust-lang.org/1.56.1/core/convert/trait.TryInto.html#tymethod.try_into"class="fnname">try_into</a>(self) -><aclass="enum"href="https://doc.rust-lang.org/1.56.1/core/result/enum.Result.html"title="enum core::result::Result">Result</a><U, <U as <aclass="trait"href="https://doc.rust-lang.org/1.56.1/core/convert/trait.TryFrom.html"title="trait core::convert::TryFrom">TryFrom</a><T>>::<aclass="type"href="https://doc.rust-lang.org/1.56.1/core/convert/trait.TryFrom.html#associatedtype.Error"title="type core::convert::TryFrom::Error">Error</a>></h4></div></summary><divclass='docblock'><p>Performs the conversion.</p>
