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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="Canvases can be leveraged to draw interactive 2D graphics."><title>cosmic::iced::widget::canvas - Rust</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Italic-81dc35de.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-MediumItalic-ccf7e434.woff2,FiraSans-Medium-e1aa3f0a.woff2,SourceCodePro-Regular-8badfe75.ttf.woff2,SourceCodePro-Semibold-aa29a496.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2" crossorigin href="../../../../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../../../../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../../../../static.files/rustdoc-aa0817cf.css"><meta name="rustdoc-vars" data-root-path="../../../../" data-static-root-path="../../../../static.files/" data-current-crate="cosmic" data-themes="" data-resource-suffix="" data-rustdoc-version="1.90.0-nightly (3048886e5 2025-07-30)" data-channel="nightly" data-search-js="search-fa3e91e5.js" data-settings-js="settings-5514c975.js" ><script src="../../../../static.files/storage-68b7e25d.js"></script><script defer src="../sidebar-items.js"></script><script defer src="../../../../static.files/main-eebb9057.js"></script><noscript><link rel="stylesheet" href="../../../../static.files/noscript-32bb7600.css"></noscript><link rel="alternate icon" type="image/png" href="../../../../static.files/favicon-32x32-6580c154.png"><link rel="icon" type="image/svg+xml" href="../../../../static.files/favicon-044be391.svg"></head><body class="rustdoc mod"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="mobile-topbar"><button class="sidebar-menu-toggle" title="show sidebar"></button></nav><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../../../../cosmic/index.html">cosmic</a><span class="version">1.0.0</span></h2></div><div class="sidebar-elems"><section id="rustdoc-toc"><h2 class="location"><a href="#">Module canvas</a></h2><h3><a href="#">Sections</a></h3><ul class="block top-toc"><li><a href="#example-drawing-a-simple-circle" title="Example: Drawing a Simple Circle">Example: Drawing a Simple Circle</a></li></ul><h3><a href="#structs">Module Items</a></h3><ul class="block"><li><a href="#structs" title="Structs">Structs</a></li><li><a href="#enums" title="Enums">Enums</a></li><li><a href="#traits" title="Traits">Traits</a></li><li><a href="#types" title="Type Aliases">Type Aliases</a></li></ul></section><div id="rustdoc-modnav"><h2><a href="../index.html">In cosmic::<wbr>iced::<wbr>widget</a></h2></div></div></nav><div class="sidebar-resizer" title="Drag to resize sidebar"></div><main><div class="width-limiter"><rustdoc-search></rustdoc-search><section id="main-content" class="content"><div class="main-heading"><div class="rustdoc-breadcrumbs"><a href="../../../index.html">cosmic</a>::<wbr><a href="../../index.html">iced</a>::<wbr><a href="../index.html">widget</a></div><h1>Module <span>canvas</span><button id="copy-path" title="Copy item path to clipboard">Copy item path</button></h1><rustdoc-toolbar></rustdoc-toolbar><span class="sub-heading"></span></div><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Canvases can be leveraged to draw interactive 2D graphics.</p>
<h2 id="example-drawing-a-simple-circle"><a class="doc-anchor" href="#example-drawing-a-simple-circle">§</a>Example: Drawing a Simple Circle</h2>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>iced::mouse;
<span class="kw">use </span>iced::widget::canvas;
<span class="kw">use </span>iced::{Color, Rectangle, Renderer, Theme};
<span class="comment">// First, we define the data we need for drawing
</span><span class="attr">#[derive(Debug)]
</span><span class="kw">struct </span>Circle {
radius: f32,
}
<span class="comment">// Then, we implement the `Program` trait
</span><span class="kw">impl</span>&lt;Message&gt; canvas::Program&lt;Message&gt; <span class="kw">for </span>Circle {
<span class="comment">// No internal state
</span><span class="kw">type </span>State = ();
<span class="kw">fn </span>draw(
<span class="kw-2">&amp;</span><span class="self">self</span>,
_state: <span class="kw-2">&amp;</span>(),
renderer: <span class="kw-2">&amp;</span>Renderer,
_theme: <span class="kw-2">&amp;</span>Theme,
bounds: Rectangle,
_cursor: mouse::Cursor
) -&gt; Vec&lt;canvas::Geometry&gt; {
<span class="comment">// We prepare a new `Frame`
</span><span class="kw">let </span><span class="kw-2">mut </span>frame = canvas::Frame::new(renderer, bounds.size());
<span class="comment">// We create a `Path` representing a simple circle
</span><span class="kw">let </span>circle = canvas::Path::circle(frame.center(), <span class="self">self</span>.radius);
<span class="comment">// And fill it with some color
</span>frame.fill(<span class="kw-2">&amp;</span>circle, Color::BLACK);
<span class="comment">// Then, we produce the geometry
</span><span class="macro">vec!</span>[frame.into_geometry()]
}
}
<span class="comment">// Finally, we simply use our `Circle` to create the `Canvas`!
</span><span class="kw">fn </span>view&lt;<span class="lifetime">'a</span>, Message: <span class="lifetime">'a</span>&gt;(_state: <span class="kw-2">&amp;</span><span class="lifetime">'a </span>State) -&gt; Element&lt;<span class="lifetime">'a</span>, Message&gt; {
canvas(Circle { radius: <span class="number">50.0 </span>}).into()
}</code></pre></div>
</div></details><h2 id="structs" class="section-header">Structs<a href="#structs" class="anchor">§</a></h2><dl class="item-table"><dt><a class="struct" href="struct.Action.html" title="struct cosmic::iced::widget::canvas::Action">Action</a></dt><dd>A runtime action that can be performed by some widgets.</dd><dt><a class="struct" href="struct.Canvas.html" title="struct cosmic::iced::widget::canvas::Canvas">Canvas</a></dt><dd>A widget capable of drawing 2D graphics.</dd><dt><a class="struct" href="struct.Fill.html" title="struct cosmic::iced::widget::canvas::Fill">Fill</a></dt><dd>The style used to fill geometry.</dd><dt><a class="struct" href="struct.Group.html" title="struct cosmic::iced::widget::canvas::Group">Group</a></dt><dd>A cache group.</dd><dt><a class="struct" href="struct.Image.html" title="struct cosmic::iced::widget::canvas::Image">Image</a></dt><dd>A raster image that can be drawn.</dd><dt><a class="struct" href="struct.LineDash.html" title="struct cosmic::iced::widget::canvas::LineDash">Line<wbr>Dash</a></dt><dd>The dash pattern used when stroking the line.</dd><dt><a class="struct" href="struct.Path.html" title="struct cosmic::iced::widget::canvas::Path">Path</a></dt><dd>An immutable set of points that may or may not be connected.</dd><dt><a class="struct" href="struct.Stroke.html" title="struct cosmic::iced::widget::canvas::Stroke">Stroke</a></dt><dd>The style of a stroke.</dd><dt><a class="struct" href="struct.Text.html" title="struct cosmic::iced::widget::canvas::Text">Text</a></dt><dd>A bunch of text that can be drawn to a canvas</dd></dl><h2 id="enums" class="section-header">Enums<a href="#enums" class="anchor">§</a></h2><dl class="item-table"><dt><a class="enum" href="enum.Event.html" title="enum cosmic::iced::widget::canvas::Event">Event</a></dt><dd>A user interface event.</dd><dt><a class="enum" href="enum.Gradient.html" title="enum cosmic::iced::widget::canvas::Gradient">Gradient</a></dt><dd>A fill which linearly interpolates colors along a direction.</dd><dt><a class="enum" href="enum.LineCap.html" title="enum cosmic::iced::widget::canvas::LineCap">LineCap</a></dt><dd>The shape used at the end of open subpaths when they are stroked.</dd><dt><a class="enum" href="enum.LineJoin.html" title="enum cosmic::iced::widget::canvas::LineJoin">Line<wbr>Join</a></dt><dd>The shape used at the corners of paths or basic shapes when they are
stroked.</dd><dt><a class="enum" href="enum.Style.html" title="enum cosmic::iced::widget::canvas::Style">Style</a></dt><dd>The coloring style of some drawing.</dd></dl><h2 id="traits" class="section-header">Traits<a href="#traits" class="anchor">§</a></h2><dl class="item-table"><dt><a class="trait" href="trait.Program.html" title="trait cosmic::iced::widget::canvas::Program">Program</a></dt><dd>The state and logic of a <a href="../../../widget/struct.Canvas.html" title="struct cosmic::widget::Canvas"><code>Canvas</code></a>.</dd></dl><h2 id="types" class="section-header">Type Aliases<a href="#types" class="anchor">§</a></h2><dl class="item-table"><dt><a class="type" href="type.Cache.html" title="type cosmic::iced::widget::canvas::Cache">Cache</a></dt><dd>A simple cache that stores generated <a href="../../../widget/canvas/type.Geometry.html" title="type cosmic::widget::canvas::Geometry"><code>Geometry</code></a> to avoid recomputation.</dd><dt><a class="type" href="type.Frame.html" title="type cosmic::iced::widget::canvas::Frame">Frame</a></dt><dd>The frame supported by a renderer.</dd><dt><a class="type" href="type.Geometry.html" title="type cosmic::iced::widget::canvas::Geometry">Geometry</a></dt><dd>The geometry supported by a renderer.</dd></dl></section></div></main></body></html>

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window.SIDEBAR_ITEMS = {"enum":["Event","Gradient","LineCap","LineJoin","Style"],"struct":["Action","Canvas","Fill","Group","Image","LineDash","Path","Stroke","Text"],"trait":["Program"],"type":["Cache","Frame","Geometry"]};

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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="The state and logic of a `Canvas`."><title>Program in cosmic::iced::widget::canvas - Rust</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Italic-81dc35de.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-MediumItalic-ccf7e434.woff2,FiraSans-Medium-e1aa3f0a.woff2,SourceCodePro-Regular-8badfe75.ttf.woff2,SourceCodePro-Semibold-aa29a496.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2" crossorigin href="../../../../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../../../../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../../../../static.files/rustdoc-aa0817cf.css"><meta name="rustdoc-vars" data-root-path="../../../../" data-static-root-path="../../../../static.files/" data-current-crate="cosmic" data-themes="" data-resource-suffix="" data-rustdoc-version="1.90.0-nightly (3048886e5 2025-07-30)" data-channel="nightly" data-search-js="search-fa3e91e5.js" data-settings-js="settings-5514c975.js" ><script src="../../../../static.files/storage-68b7e25d.js"></script><script defer src="sidebar-items.js"></script><script defer src="../../../../static.files/main-eebb9057.js"></script><noscript><link rel="stylesheet" href="../../../../static.files/noscript-32bb7600.css"></noscript><link rel="alternate icon" type="image/png" href="../../../../static.files/favicon-32x32-6580c154.png"><link rel="icon" type="image/svg+xml" href="../../../../static.files/favicon-044be391.svg"></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="mobile-topbar"><button class="sidebar-menu-toggle" title="show sidebar"></button></nav><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../../../../cosmic/index.html">cosmic</a><span class="version">1.0.0</span></h2></div><div class="sidebar-elems"><section id="rustdoc-toc"><h2 class="location"><a href="#">Program</a></h2><h3><a href="#required-associated-types">Required Associated Types</a></h3><ul class="block"><li><a href="#associatedtype.State" title="State">State</a></li></ul><h3><a href="#required-methods">Required Methods</a></h3><ul class="block"><li><a href="#tymethod.draw" title="draw">draw</a></li></ul><h3><a href="#provided-methods">Provided Methods</a></h3><ul class="block"><li><a href="#method.mouse_interaction" title="mouse_interaction">mouse_interaction</a></li><li><a href="#method.update" title="update">update</a></li></ul><h3><a href="#foreign-impls">Implementations on Foreign Types</a></h3><ul class="block"><li><a href="#impl-Program%3CMessage,+Theme,+Renderer%3E-for-%26T" title="&#38;T">&#38;T</a></li></ul><h3><a href="#implementors">Implementors</a></h3></section><div id="rustdoc-modnav"><h2><a href="index.html">In cosmic::<wbr>iced::<wbr>widget::<wbr>canvas</a></h2></div></div></nav><div class="sidebar-resizer" title="Drag to resize sidebar"></div><main><div class="width-limiter"><rustdoc-search></rustdoc-search><section id="main-content" class="content"><div class="main-heading"><div class="rustdoc-breadcrumbs"><a href="../../../index.html">cosmic</a>::<wbr><a href="../../index.html">iced</a>::<wbr><a href="../index.html">widget</a>::<wbr><a href="index.html">canvas</a></div><h1>Trait <span class="trait">Program</span><button id="copy-path" title="Copy item path to clipboard">Copy item path</button></h1><rustdoc-toolbar></rustdoc-toolbar><span class="sub-heading"></span></div><pre class="rust item-decl"><code>pub trait Program&lt;Message, Theme = <a class="enum" href="../../enum.Theme.html" title="enum cosmic::iced::Theme">Theme</a>, Renderer = Renderer&gt;<div class="where">where
Renderer: <a class="trait" href="../../daemon/program/graphics/geometry/trait.Renderer.html" title="trait cosmic::iced::daemon::program::graphics::geometry::Renderer">Renderer</a>,</div>{
type <a href="#associatedtype.State" class="associatedtype">State</a>: <a class="trait" href="https://doc.rust-lang.org/nightly/core/default/trait.Default.html" title="trait core::default::Default">Default</a> + 'static;
// Required method
fn <a href="#tymethod.draw" class="fn">draw</a>(
&amp;self,
state: &amp;Self::<a class="associatedtype" href="../../../widget/canvas/trait.Program.html#associatedtype.State" title="type cosmic::widget::canvas::Program::State">State</a>,
renderer: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;Renderer</a>,
theme: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;Theme</a>,
bounds: <a class="struct" href="../../struct.Rectangle.html" title="struct cosmic::iced::Rectangle">Rectangle</a>,
cursor: <a class="enum" href="../../mouse/enum.Cursor.html" title="enum cosmic::iced::mouse::Cursor">Cursor</a>,
) -&gt; <a class="struct" href="../../../cctk/sctk/reexports/client/backend/smallvec/alloc/vec/struct.Vec.html" title="struct cosmic::cctk::sctk::reexports::client::backend::smallvec::alloc::vec::Vec">Vec</a>&lt;&lt;Renderer as <a class="trait" href="../../daemon/program/graphics/geometry/trait.Renderer.html" title="trait cosmic::iced::daemon::program::graphics::geometry::Renderer">Renderer</a>&gt;::<a class="associatedtype" href="../../daemon/program/graphics/geometry/trait.Renderer.html#associatedtype.Geometry" title="type cosmic::iced::daemon::program::graphics::geometry::Renderer::Geometry">Geometry</a>&gt;;
// Provided methods
fn <a href="#method.update" class="fn">update</a>(
&amp;self,
_state: &amp;mut Self::<a class="associatedtype" href="../../../widget/canvas/trait.Program.html#associatedtype.State" title="type cosmic::widget::canvas::Program::State">State</a>,
_event: &amp;<a class="enum" href="../../enum.Event.html" title="enum cosmic::iced::Event">Event</a>,
_bounds: <a class="struct" href="../../struct.Rectangle.html" title="struct cosmic::iced::Rectangle">Rectangle</a>,
_cursor: <a class="enum" href="../../mouse/enum.Cursor.html" title="enum cosmic::iced::mouse::Cursor">Cursor</a>,
) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../widget/canvas/struct.Action.html" title="struct cosmic::widget::canvas::Action">Action</a>&lt;Message&gt;&gt; { ... }
<span class="item-spacer"></span> fn <a href="#method.mouse_interaction" class="fn">mouse_interaction</a>(
&amp;self,
_state: &amp;Self::<a class="associatedtype" href="../../../widget/canvas/trait.Program.html#associatedtype.State" title="type cosmic::widget::canvas::Program::State">State</a>,
_bounds: <a class="struct" href="../../struct.Rectangle.html" title="struct cosmic::iced::Rectangle">Rectangle</a>,
_cursor: <a class="enum" href="../../mouse/enum.Cursor.html" title="enum cosmic::iced::mouse::Cursor">Cursor</a>,
) -&gt; <a class="enum" href="../../mouse/enum.Interaction.html" title="enum cosmic::iced::mouse::Interaction">Interaction</a> { ... }
}</code></pre><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>The state and logic of a <a href="../../../widget/struct.Canvas.html" title="struct cosmic::widget::Canvas"><code>Canvas</code></a>.</p>
<p>A <a href="../../../widget/canvas/trait.Program.html" title="trait cosmic::widget::canvas::Program"><code>Program</code></a> can mutate internal state and produce messages for an
application.</p>
</div></details><h2 id="required-associated-types" class="section-header">Required Associated Types<a href="#required-associated-types" class="anchor">§</a></h2><div class="methods"><details class="toggle" open><summary><section id="associatedtype.State" class="method"><h4 class="code-header">type <a href="#associatedtype.State" class="associatedtype">State</a>: <a class="trait" href="https://doc.rust-lang.org/nightly/core/default/trait.Default.html" title="trait core::default::Default">Default</a> + 'static</h4></section></summary><div class="docblock"><p>The internal state mutated by the <a href="../../../widget/canvas/trait.Program.html" title="trait cosmic::widget::canvas::Program"><code>Program</code></a>.</p>
</div></details></div><h2 id="required-methods" class="section-header">Required Methods<a href="#required-methods" class="anchor">§</a></h2><div class="methods"><details class="toggle method-toggle" open><summary><section id="tymethod.draw" class="method"><h4 class="code-header">fn <a href="#tymethod.draw" class="fn">draw</a>(
&amp;self,
state: &amp;Self::<a class="associatedtype" href="../../../widget/canvas/trait.Program.html#associatedtype.State" title="type cosmic::widget::canvas::Program::State">State</a>,
renderer: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;Renderer</a>,
theme: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;Theme</a>,
bounds: <a class="struct" href="../../struct.Rectangle.html" title="struct cosmic::iced::Rectangle">Rectangle</a>,
cursor: <a class="enum" href="../../mouse/enum.Cursor.html" title="enum cosmic::iced::mouse::Cursor">Cursor</a>,
) -&gt; <a class="struct" href="../../../cctk/sctk/reexports/client/backend/smallvec/alloc/vec/struct.Vec.html" title="struct cosmic::cctk::sctk::reexports::client::backend::smallvec::alloc::vec::Vec">Vec</a>&lt;&lt;Renderer as <a class="trait" href="../../daemon/program/graphics/geometry/trait.Renderer.html" title="trait cosmic::iced::daemon::program::graphics::geometry::Renderer">Renderer</a>&gt;::<a class="associatedtype" href="../../daemon/program/graphics/geometry/trait.Renderer.html#associatedtype.Geometry" title="type cosmic::iced::daemon::program::graphics::geometry::Renderer::Geometry">Geometry</a>&gt;</h4></section></summary><div class="docblock"><p>Draws the state of the <a href="../../../widget/canvas/trait.Program.html" title="trait cosmic::widget::canvas::Program"><code>Program</code></a>, producing a bunch of <a href="../../../widget/canvas/type.Geometry.html" title="type cosmic::widget::canvas::Geometry"><code>Geometry</code></a>.</p>
<p><a href="../../../widget/canvas/type.Geometry.html" title="type cosmic::widget::canvas::Geometry"><code>Geometry</code></a> can be easily generated with a <a href="../../../widget/canvas/type.Frame.html" title="type cosmic::widget::canvas::Frame"><code>Frame</code></a> or stored in a
<a href="../../../widget/canvas/type.Cache.html" title="type cosmic::widget::canvas::Cache"><code>Cache</code></a>.</p>
</div></details></div><h2 id="provided-methods" class="section-header">Provided Methods<a href="#provided-methods" class="anchor">§</a></h2><div class="methods"><details class="toggle method-toggle" open><summary><section id="method.update" class="method"><h4 class="code-header">fn <a href="#method.update" class="fn">update</a>(
&amp;self,
_state: &amp;mut Self::<a class="associatedtype" href="../../../widget/canvas/trait.Program.html#associatedtype.State" title="type cosmic::widget::canvas::Program::State">State</a>,
_event: &amp;<a class="enum" href="../../enum.Event.html" title="enum cosmic::iced::Event">Event</a>,
_bounds: <a class="struct" href="../../struct.Rectangle.html" title="struct cosmic::iced::Rectangle">Rectangle</a>,
_cursor: <a class="enum" href="../../mouse/enum.Cursor.html" title="enum cosmic::iced::mouse::Cursor">Cursor</a>,
) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../widget/canvas/struct.Action.html" title="struct cosmic::widget::canvas::Action">Action</a>&lt;Message&gt;&gt;</h4></section></summary><div class="docblock"><p>Updates the <a href="../../../widget/canvas/trait.Program.html#associatedtype.State" title="associated type iced_widget::canvas::program::Program::State::State"><code>State</code></a> of the <a href="../../../widget/canvas/trait.Program.html" title="trait cosmic::widget::canvas::Program"><code>Program</code></a>.</p>
<p>When a <a href="../../../widget/canvas/trait.Program.html" title="trait cosmic::widget::canvas::Program"><code>Program</code></a> is used in a <a href="../../../widget/struct.Canvas.html" title="struct cosmic::widget::Canvas"><code>Canvas</code></a>, the runtime will call this
method for each <a href="../../enum.Event.html" title="enum cosmic::iced::Event"><code>Event</code></a>.</p>
<p>This method can optionally return an <a href="../../../widget/canvas/struct.Action.html" title="struct cosmic::widget::canvas::Action"><code>Action</code></a> to either notify an
application of any meaningful interactions, capture the event, or
request a redraw.</p>
<p>By default, this method does and returns nothing.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.mouse_interaction" class="method"><h4 class="code-header">fn <a href="#method.mouse_interaction" class="fn">mouse_interaction</a>(
&amp;self,
_state: &amp;Self::<a class="associatedtype" href="../../../widget/canvas/trait.Program.html#associatedtype.State" title="type cosmic::widget::canvas::Program::State">State</a>,
_bounds: <a class="struct" href="../../struct.Rectangle.html" title="struct cosmic::iced::Rectangle">Rectangle</a>,
_cursor: <a class="enum" href="../../mouse/enum.Cursor.html" title="enum cosmic::iced::mouse::Cursor">Cursor</a>,
) -&gt; <a class="enum" href="../../mouse/enum.Interaction.html" title="enum cosmic::iced::mouse::Interaction">Interaction</a></h4></section></summary><div class="docblock"><p>Returns the current mouse interaction of the <a href="../../../widget/canvas/trait.Program.html" title="trait cosmic::widget::canvas::Program"><code>Program</code></a>.</p>
<p>The interaction returned will be in effect even if the cursor position
is out of bounds of the program’s <a href="../../../widget/struct.Canvas.html" title="struct cosmic::widget::Canvas"><code>Canvas</code></a>.</p>
</div></details></div><h2 id="foreign-impls" class="section-header">Implementations on Foreign Types<a href="#foreign-impls" class="anchor">§</a></h2><details class="toggle implementors-toggle"><summary><section id="impl-Program%3CMessage,+Theme,+Renderer%3E-for-%26T" class="impl"><a href="#impl-Program%3CMessage,+Theme,+Renderer%3E-for-%26T" class="anchor">§</a><h3 class="code-header">impl&lt;Message, Theme, Renderer, T&gt; <a class="trait" href="../../../widget/canvas/trait.Program.html" title="trait cosmic::widget::canvas::Program">Program</a>&lt;Message, Theme, Renderer&gt; for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;T</a><div class="where">where
Renderer: <a class="trait" href="../../daemon/program/graphics/geometry/trait.Renderer.html" title="trait cosmic::iced::daemon::program::graphics::geometry::Renderer">Renderer</a>,
T: <a class="trait" href="../../../widget/canvas/trait.Program.html" title="trait cosmic::widget::canvas::Program">Program</a>&lt;Message, Theme, Renderer&gt;,</div></h3></section></summary><div class="impl-items"><section id="associatedtype.State-1" class="associatedtype trait-impl"><a href="#associatedtype.State-1" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.State" class="associatedtype">State</a> = &lt;T as <a class="trait" href="../../../widget/canvas/trait.Program.html" title="trait cosmic::widget::canvas::Program">Program</a>&lt;Message, Theme, Renderer&gt;&gt;::<a class="associatedtype" href="../../../widget/canvas/trait.Program.html#associatedtype.State" title="type cosmic::widget::canvas::Program::State">State</a></h4></section><section id="method.update-1" class="method trait-impl"><a href="#method.update-1" class="anchor">§</a><h4 class="code-header">fn <a href="#method.update" class="fn">update</a>(
&amp;self,
state: &amp;mut &lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;T</a> as <a class="trait" href="../../../widget/canvas/trait.Program.html" title="trait cosmic::widget::canvas::Program">Program</a>&lt;Message, Theme, Renderer&gt;&gt;::<a class="associatedtype" href="../../../widget/canvas/trait.Program.html#associatedtype.State" title="type cosmic::widget::canvas::Program::State">State</a>,
event: &amp;<a class="enum" href="../../enum.Event.html" title="enum cosmic::iced::Event">Event</a>,
bounds: <a class="struct" href="../../struct.Rectangle.html" title="struct cosmic::iced::Rectangle">Rectangle</a>,
cursor: <a class="enum" href="../../mouse/enum.Cursor.html" title="enum cosmic::iced::mouse::Cursor">Cursor</a>,
) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../widget/canvas/struct.Action.html" title="struct cosmic::widget::canvas::Action">Action</a>&lt;Message&gt;&gt;</h4></section><section id="method.draw" class="method trait-impl"><a href="#method.draw" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.draw" class="fn">draw</a>(
&amp;self,
state: &amp;&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;T</a> as <a class="trait" href="../../../widget/canvas/trait.Program.html" title="trait cosmic::widget::canvas::Program">Program</a>&lt;Message, Theme, Renderer&gt;&gt;::<a class="associatedtype" href="../../../widget/canvas/trait.Program.html#associatedtype.State" title="type cosmic::widget::canvas::Program::State">State</a>,
renderer: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;Renderer</a>,
theme: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;Theme</a>,
bounds: <a class="struct" href="../../struct.Rectangle.html" title="struct cosmic::iced::Rectangle">Rectangle</a>,
cursor: <a class="enum" href="../../mouse/enum.Cursor.html" title="enum cosmic::iced::mouse::Cursor">Cursor</a>,
) -&gt; <a class="struct" href="../../../cctk/sctk/reexports/client/backend/smallvec/alloc/vec/struct.Vec.html" title="struct cosmic::cctk::sctk::reexports::client::backend::smallvec::alloc::vec::Vec">Vec</a>&lt;&lt;Renderer as <a class="trait" href="../../daemon/program/graphics/geometry/trait.Renderer.html" title="trait cosmic::iced::daemon::program::graphics::geometry::Renderer">Renderer</a>&gt;::<a class="associatedtype" href="../../daemon/program/graphics/geometry/trait.Renderer.html#associatedtype.Geometry" title="type cosmic::iced::daemon::program::graphics::geometry::Renderer::Geometry">Geometry</a>&gt;</h4></section><section id="method.mouse_interaction-1" class="method trait-impl"><a href="#method.mouse_interaction-1" class="anchor">§</a><h4 class="code-header">fn <a href="#method.mouse_interaction" class="fn">mouse_interaction</a>(
&amp;self,
state: &amp;&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;T</a> as <a class="trait" href="../../../widget/canvas/trait.Program.html" title="trait cosmic::widget::canvas::Program">Program</a>&lt;Message, Theme, Renderer&gt;&gt;::<a class="associatedtype" href="../../../widget/canvas/trait.Program.html#associatedtype.State" title="type cosmic::widget::canvas::Program::State">State</a>,
bounds: <a class="struct" href="../../struct.Rectangle.html" title="struct cosmic::iced::Rectangle">Rectangle</a>,
cursor: <a class="enum" href="../../mouse/enum.Cursor.html" title="enum cosmic::iced::mouse::Cursor">Cursor</a>,
) -&gt; <a class="enum" href="../../mouse/enum.Interaction.html" title="enum cosmic::iced::mouse::Interaction">Interaction</a></h4></section></div></details><h2 id="implementors" class="section-header">Implementors<a href="#implementors" class="anchor">§</a></h2><div id="implementors-list"></div><script src="../../../../trait.impl/iced_widget/canvas/program/trait.Program.js" async></script></section></div></main></body></html>

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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 simple cache that stores generated `Geometry` to avoid recomputation."><title>Cache in cosmic::iced::widget::canvas - Rust</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Italic-81dc35de.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-MediumItalic-ccf7e434.woff2,FiraSans-Medium-e1aa3f0a.woff2,SourceCodePro-Regular-8badfe75.ttf.woff2,SourceCodePro-Semibold-aa29a496.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2" crossorigin href="../../../../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../../../../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../../../../static.files/rustdoc-aa0817cf.css"><meta name="rustdoc-vars" data-root-path="../../../../" data-static-root-path="../../../../static.files/" data-current-crate="cosmic" data-themes="" data-resource-suffix="" data-rustdoc-version="1.90.0-nightly (3048886e5 2025-07-30)" data-channel="nightly" data-search-js="search-fa3e91e5.js" data-settings-js="settings-5514c975.js" ><script src="../../../../static.files/storage-68b7e25d.js"></script><script defer src="sidebar-items.js"></script><script defer src="../../../../static.files/main-eebb9057.js"></script><noscript><link rel="stylesheet" href="../../../../static.files/noscript-32bb7600.css"></noscript><link rel="alternate icon" type="image/png" href="../../../../static.files/favicon-32x32-6580c154.png"><link rel="icon" type="image/svg+xml" href="../../../../static.files/favicon-044be391.svg"></head><body class="rustdoc type"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="mobile-topbar"><button class="sidebar-menu-toggle" title="show sidebar"></button></nav><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../../../../cosmic/index.html">cosmic</a><span class="version">1.0.0</span></h2></div><div class="sidebar-elems"><section id="rustdoc-toc"><h2 class="location"><a href="#">Cache</a></h2><h3><a href="#aliased-type">Aliased Type</a></h3></section><div id="rustdoc-modnav"><h2><a href="index.html">In cosmic::<wbr>iced::<wbr>widget::<wbr>canvas</a></h2></div></div></nav><div class="sidebar-resizer" title="Drag to resize sidebar"></div><main><div class="width-limiter"><rustdoc-search></rustdoc-search><section id="main-content" class="content"><div class="main-heading"><div class="rustdoc-breadcrumbs"><a href="../../../index.html">cosmic</a>::<wbr><a href="../../index.html">iced</a>::<wbr><a href="../index.html">widget</a>::<wbr><a href="index.html">canvas</a></div><h1>Type Alias <span class="type">Cache</span><button id="copy-path" title="Copy item path to clipboard">Copy item path</button></h1><rustdoc-toolbar></rustdoc-toolbar><span class="sub-heading"></span></div><pre class="rust item-decl"><code>pub type Cache&lt;Renderer = Renderer&gt; = <a class="struct" href="../../daemon/program/graphics/geometry/struct.Cache.html" title="struct cosmic::iced::daemon::program::graphics::geometry::Cache">Cache</a>&lt;Renderer&gt;;</code></pre><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>A simple cache that stores generated <a href="../../../widget/canvas/type.Geometry.html" title="type cosmic::widget::canvas::Geometry"><code>Geometry</code></a> to avoid recomputation.</p>
<p>A <a href="../../../widget/canvas/type.Cache.html" title="type cosmic::widget::canvas::Cache"><code>Cache</code></a> will not redraw its geometry unless the dimensions of its layer
change or it is explicitly cleared.</p>
</div></details><h2 id="aliased-type" class="section-header">Aliased Type<a href="#aliased-type" class="anchor">§</a></h2><pre class="rust item-decl"><code>pub struct Cache&lt;Renderer = Renderer&gt; { <span class="comment">/* private fields */</span> }</code></pre><script src="../../../../type.impl/cosmic/iced/daemon/program/graphics/geometry/struct.Cache.js" data-self-path="cosmic::widget::canvas::Cache" async></script></section></div></main></body></html>

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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="The frame supported by a renderer."><title>Frame in cosmic::iced::widget::canvas - Rust</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Italic-81dc35de.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-MediumItalic-ccf7e434.woff2,FiraSans-Medium-e1aa3f0a.woff2,SourceCodePro-Regular-8badfe75.ttf.woff2,SourceCodePro-Semibold-aa29a496.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2" crossorigin href="../../../../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../../../../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../../../../static.files/rustdoc-aa0817cf.css"><meta name="rustdoc-vars" data-root-path="../../../../" data-static-root-path="../../../../static.files/" data-current-crate="cosmic" data-themes="" data-resource-suffix="" data-rustdoc-version="1.90.0-nightly (3048886e5 2025-07-30)" data-channel="nightly" data-search-js="search-fa3e91e5.js" data-settings-js="settings-5514c975.js" ><script src="../../../../static.files/storage-68b7e25d.js"></script><script defer src="sidebar-items.js"></script><script defer src="../../../../static.files/main-eebb9057.js"></script><noscript><link rel="stylesheet" href="../../../../static.files/noscript-32bb7600.css"></noscript><link rel="alternate icon" type="image/png" href="../../../../static.files/favicon-32x32-6580c154.png"><link rel="icon" type="image/svg+xml" href="../../../../static.files/favicon-044be391.svg"></head><body class="rustdoc type"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="mobile-topbar"><button class="sidebar-menu-toggle" title="show sidebar"></button></nav><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../../../../cosmic/index.html">cosmic</a><span class="version">1.0.0</span></h2></div><div class="sidebar-elems"><section id="rustdoc-toc"><h2 class="location"><a href="#">Frame</a></h2><h3><a href="#aliased-type">Aliased Type</a></h3></section><div id="rustdoc-modnav"><h2><a href="index.html">In cosmic::<wbr>iced::<wbr>widget::<wbr>canvas</a></h2></div></div></nav><div class="sidebar-resizer" title="Drag to resize sidebar"></div><main><div class="width-limiter"><rustdoc-search></rustdoc-search><section id="main-content" class="content"><div class="main-heading"><div class="rustdoc-breadcrumbs"><a href="../../../index.html">cosmic</a>::<wbr><a href="../../index.html">iced</a>::<wbr><a href="../index.html">widget</a>::<wbr><a href="index.html">canvas</a></div><h1>Type Alias <span class="type">Frame</span><button id="copy-path" title="Copy item path to clipboard">Copy item path</button></h1><rustdoc-toolbar></rustdoc-toolbar><span class="sub-heading"></span></div><pre class="rust item-decl"><code>pub type Frame&lt;Renderer = Renderer&gt; = <a class="struct" href="../../daemon/program/graphics/geometry/struct.Frame.html" title="struct cosmic::iced::daemon::program::graphics::geometry::Frame">Frame</a>&lt;Renderer&gt;;</code></pre><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>The frame supported by a renderer.</p>
</div></details><h2 id="aliased-type" class="section-header">Aliased Type<a href="#aliased-type" class="anchor">§</a></h2><pre class="rust item-decl"><code>pub struct Frame&lt;Renderer = Renderer&gt; { <span class="comment">/* private fields */</span> }</code></pre><script src="../../../../type.impl/cosmic/iced/daemon/program/graphics/geometry/struct.Frame.js" data-self-path="cosmic::widget::canvas::Frame" async></script></section></div></main></body></html>

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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="The geometry supported by a renderer."><title>Geometry in cosmic::iced::widget::canvas - Rust</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Italic-81dc35de.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-MediumItalic-ccf7e434.woff2,FiraSans-Medium-e1aa3f0a.woff2,SourceCodePro-Regular-8badfe75.ttf.woff2,SourceCodePro-Semibold-aa29a496.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2" crossorigin href="../../../../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../../../../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../../../../static.files/rustdoc-aa0817cf.css"><meta name="rustdoc-vars" data-root-path="../../../../" data-static-root-path="../../../../static.files/" data-current-crate="cosmic" data-themes="" data-resource-suffix="" data-rustdoc-version="1.90.0-nightly (3048886e5 2025-07-30)" data-channel="nightly" data-search-js="search-fa3e91e5.js" data-settings-js="settings-5514c975.js" ><script src="../../../../static.files/storage-68b7e25d.js"></script><script defer src="sidebar-items.js"></script><script defer src="../../../../static.files/main-eebb9057.js"></script><noscript><link rel="stylesheet" href="../../../../static.files/noscript-32bb7600.css"></noscript><link rel="alternate icon" type="image/png" href="../../../../static.files/favicon-32x32-6580c154.png"><link rel="icon" type="image/svg+xml" href="../../../../static.files/favicon-044be391.svg"></head><body class="rustdoc type"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="mobile-topbar"><button class="sidebar-menu-toggle" title="show sidebar"></button></nav><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../../../../cosmic/index.html">cosmic</a><span class="version">1.0.0</span></h2></div><div class="sidebar-elems"><div id="rustdoc-modnav"><h2><a href="index.html">In cosmic::<wbr>iced::<wbr>widget::<wbr>canvas</a></h2></div></div></nav><div class="sidebar-resizer" title="Drag to resize sidebar"></div><main><div class="width-limiter"><rustdoc-search></rustdoc-search><section id="main-content" class="content"><div class="main-heading"><div class="rustdoc-breadcrumbs"><a href="../../../index.html">cosmic</a>::<wbr><a href="../../index.html">iced</a>::<wbr><a href="../index.html">widget</a>::<wbr><a href="index.html">canvas</a></div><h1>Type Alias <span class="type">Geometry</span><button id="copy-path" title="Copy item path to clipboard">Copy item path</button></h1><rustdoc-toolbar></rustdoc-toolbar><span class="sub-heading"></span></div><pre class="rust item-decl"><code>pub type Geometry&lt;Renderer = Renderer&gt; = &lt;Renderer as <a class="trait" href="../../daemon/program/graphics/geometry/trait.Renderer.html" title="trait cosmic::iced::daemon::program::graphics::geometry::Renderer">Renderer</a>&gt;::<a class="associatedtype" href="../../daemon/program/graphics/geometry/trait.Renderer.html#associatedtype.Geometry" title="type cosmic::iced::daemon::program::graphics::geometry::Renderer::Geometry">Geometry</a>;</code></pre><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>The geometry supported by a renderer.</p>
</div></details></section></div></main></body></html>