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</pre><pre class="rust"><code><span class="kw">use</span> <span class="ident">serde</span>::{<span class="ident">Deserialize</span>, <span class="ident">Serialize</span>};

<span class="kw">use</span> <span class="ident">geom</span>::{<span class="ident">trim_f64</span>, <span class="ident">Polygon</span>, <span class="ident">Pt2D</span>};

<span class="kw">use</span> <span class="kw">crate</span>::{<span class="ident">Canvas</span>, <span class="ident">EdgeInsets</span>};

<span class="doccomment">/// ScreenPt is in units of logical pixels, as opposed to physical pixels.</span>
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Debug</span>, <span class="ident">Clone</span>, <span class="ident">Copy</span>, <span class="ident">PartialEq</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">ScreenPt</span> {
    <span class="kw">pub</span> <span class="ident">x</span>: <span class="ident">f64</span>,
    <span class="kw">pub</span> <span class="ident">y</span>: <span class="ident">f64</span>,
}

<span class="kw">impl</span> <span class="ident">ScreenPt</span> {
    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>(<span class="ident">x</span>: <span class="ident">f64</span>, <span class="ident">y</span>: <span class="ident">f64</span>) -&gt; <span class="ident">ScreenPt</span> {
        <span class="ident">ScreenPt</span> { <span class="ident">x</span>, <span class="ident">y</span> }
    }

    <span class="comment">// The geom layer operates in map-space, but currently reusing lots of geom abstractions for</span>
    <span class="comment">// screen-space.</span>
    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">to_pt</span>(<span class="self">self</span>) -&gt; <span class="ident">Pt2D</span> {
        <span class="ident">Pt2D::new</span>(<span class="self">self</span>.<span class="ident">x</span>, <span class="self">self</span>.<span class="ident">y</span>)
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">zero</span>() -&gt; <span class="self">Self</span> {
        <span class="self">Self</span> { <span class="ident">x</span>: <span class="number">0.0</span>, <span class="ident">y</span>: <span class="number">0.0</span> }
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">translated</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">x</span>: <span class="ident">f64</span>, <span class="ident">y</span>: <span class="ident">f64</span>) -&gt; <span class="self">Self</span> {
        <span class="self">Self</span> {
            <span class="ident">x</span>: <span class="self">self</span>.<span class="ident">x</span> <span class="op">+</span> <span class="ident">x</span>,
            <span class="ident">y</span>: <span class="self">self</span>.<span class="ident">y</span> <span class="op">+</span> <span class="ident">y</span>,
        }
    }
}

<span class="kw">impl</span> <span class="ident">From</span><span class="op">&lt;</span><span class="ident">winit::dpi::LogicalPosition</span><span class="op">&lt;</span><span class="ident">f64</span><span class="op">&gt;</span><span class="op">&gt;</span> <span class="kw">for</span> <span class="ident">ScreenPt</span> {
    <span class="kw">fn</span> <span class="ident">from</span>(<span class="ident">lp</span>: <span class="ident">winit::dpi::LogicalPosition</span><span class="op">&lt;</span><span class="ident">f64</span><span class="op">&gt;</span>) -&gt; <span class="ident">ScreenPt</span> {
        <span class="ident">ScreenPt</span> { <span class="ident">x</span>: <span class="ident">lp</span>.<span class="ident">x</span>, <span class="ident">y</span>: <span class="ident">lp</span>.<span class="ident">y</span> }
    }
}

<span class="doccomment">/// ScreenRectangle is in units of logical pixels, as opposed to physical pixels.</span>
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Clone</span>, <span class="ident">Debug</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">ScreenRectangle</span> {
    <span class="kw">pub</span> <span class="ident">x1</span>: <span class="ident">f64</span>,
    <span class="kw">pub</span> <span class="ident">y1</span>: <span class="ident">f64</span>,
    <span class="kw">pub</span> <span class="ident">x2</span>: <span class="ident">f64</span>,
    <span class="kw">pub</span> <span class="ident">y2</span>: <span class="ident">f64</span>,
}

<span class="kw">impl</span> <span class="ident">ScreenRectangle</span> {
    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">top_left</span>(<span class="ident">top_left</span>: <span class="ident">ScreenPt</span>, <span class="ident">dims</span>: <span class="ident">ScreenDims</span>) -&gt; <span class="ident">ScreenRectangle</span> {
        <span class="ident">ScreenRectangle</span> {
            <span class="ident">x1</span>: <span class="ident">top_left</span>.<span class="ident">x</span>,
            <span class="ident">y1</span>: <span class="ident">top_left</span>.<span class="ident">y</span>,
            <span class="ident">x2</span>: <span class="ident">top_left</span>.<span class="ident">x</span> <span class="op">+</span> <span class="ident">dims</span>.<span class="ident">width</span>,
            <span class="ident">y2</span>: <span class="ident">top_left</span>.<span class="ident">y</span> <span class="op">+</span> <span class="ident">dims</span>.<span class="ident">height</span>,
        }
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">placeholder</span>() -&gt; <span class="ident">ScreenRectangle</span> {
        <span class="ident">ScreenRectangle</span> {
            <span class="ident">x1</span>: <span class="number">0.0</span>,
            <span class="ident">y1</span>: <span class="number">0.0</span>,
            <span class="ident">x2</span>: <span class="number">0.0</span>,
            <span class="ident">y2</span>: <span class="number">0.0</span>,
        }
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">contains</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">pt</span>: <span class="ident">ScreenPt</span>) -&gt; <span class="ident">bool</span> {
        <span class="ident">pt</span>.<span class="ident">x</span> <span class="op">&gt;</span><span class="op">=</span> <span class="self">self</span>.<span class="ident">x1</span> <span class="op">&amp;&amp;</span> <span class="ident">pt</span>.<span class="ident">x</span> <span class="op">&lt;</span><span class="op">=</span> <span class="self">self</span>.<span class="ident">x2</span> <span class="op">&amp;&amp;</span> <span class="ident">pt</span>.<span class="ident">y</span> <span class="op">&gt;</span><span class="op">=</span> <span class="self">self</span>.<span class="ident">y1</span> <span class="op">&amp;&amp;</span> <span class="ident">pt</span>.<span class="ident">y</span> <span class="op">&lt;</span><span class="op">=</span> <span class="self">self</span>.<span class="ident">y2</span>
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">pt_to_percent</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">pt</span>: <span class="ident">ScreenPt</span>) -&gt; <span class="prelude-ty">Option</span><span class="op">&lt;</span>(<span class="ident">f64</span>, <span class="ident">f64</span>)<span class="op">&gt;</span> {
        <span class="kw">if</span> <span class="self">self</span>.<span class="ident">contains</span>(<span class="ident">pt</span>) {
            <span class="prelude-val">Some</span>((
                (<span class="ident">pt</span>.<span class="ident">x</span> <span class="op">-</span> <span class="self">self</span>.<span class="ident">x1</span>) <span class="op">/</span> <span class="self">self</span>.<span class="ident">width</span>(),
                (<span class="ident">pt</span>.<span class="ident">y</span> <span class="op">-</span> <span class="self">self</span>.<span class="ident">y1</span>) <span class="op">/</span> <span class="self">self</span>.<span class="ident">height</span>(),
            ))
        } <span class="kw">else</span> {
            <span class="prelude-val">None</span>
        }
    }
    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">percent_to_pt</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">x</span>: <span class="ident">f64</span>, <span class="ident">y</span>: <span class="ident">f64</span>) -&gt; <span class="ident">ScreenPt</span> {
        <span class="ident">ScreenPt::new</span>(<span class="self">self</span>.<span class="ident">x1</span> <span class="op">+</span> <span class="ident">x</span> <span class="op">*</span> <span class="self">self</span>.<span class="ident">width</span>(), <span class="self">self</span>.<span class="ident">y1</span> <span class="op">+</span> <span class="ident">y</span> <span class="op">*</span> <span class="self">self</span>.<span class="ident">height</span>())
    }

    <span class="comment">// TODO Remove these in favor of dims()</span>
    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">width</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="ident">f64</span> {
        <span class="self">self</span>.<span class="ident">x2</span> <span class="op">-</span> <span class="self">self</span>.<span class="ident">x1</span>
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">height</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="ident">f64</span> {
        <span class="self">self</span>.<span class="ident">y2</span> <span class="op">-</span> <span class="self">self</span>.<span class="ident">y1</span>
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">dims</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="ident">ScreenDims</span> {
        <span class="ident">ScreenDims::new</span>(<span class="self">self</span>.<span class="ident">x2</span> <span class="op">-</span> <span class="self">self</span>.<span class="ident">x1</span>, <span class="self">self</span>.<span class="ident">y2</span> <span class="op">-</span> <span class="self">self</span>.<span class="ident">y1</span>)
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">center</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="ident">ScreenPt</span> {
        <span class="ident">ScreenPt::new</span>((<span class="self">self</span>.<span class="ident">x1</span> <span class="op">+</span> <span class="self">self</span>.<span class="ident">x2</span>) <span class="op">/</span> <span class="number">2.0</span>, (<span class="self">self</span>.<span class="ident">y1</span> <span class="op">+</span> <span class="self">self</span>.<span class="ident">y2</span>) <span class="op">/</span> <span class="number">2.0</span>)
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">to_polygon</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="ident">Polygon</span> {
        <span class="ident">Polygon::rectangle</span>(<span class="self">self</span>.<span class="ident">width</span>(), <span class="self">self</span>.<span class="ident">height</span>()).<span class="ident">translate</span>(<span class="self">self</span>.<span class="ident">x1</span>, <span class="self">self</span>.<span class="ident">y1</span>)
    }
}

<span class="comment">// REVIEW: Rename to something shorter? e.g. Dims / Size</span>
<span class="doccomment">/// ScreenDims is in units of logical pixels, as opposed to physical pixels.</span>
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Debug</span>, <span class="ident">Clone</span>, <span class="ident">Copy</span>, <span class="ident">PartialEq</span>, <span class="ident">Serialize</span>, <span class="ident">Deserialize</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">ScreenDims</span> {
    <span class="kw">pub</span> <span class="ident">width</span>: <span class="ident">f64</span>,
    <span class="kw">pub</span> <span class="ident">height</span>: <span class="ident">f64</span>,
}

<span class="kw">impl</span> <span class="ident">ScreenDims</span> {
    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>(<span class="ident">width</span>: <span class="ident">f64</span>, <span class="ident">height</span>: <span class="ident">f64</span>) -&gt; <span class="ident">ScreenDims</span> {
        <span class="ident">ScreenDims</span> {
            <span class="ident">width</span>: <span class="ident">trim_f64</span>(<span class="ident">width</span>),
            <span class="ident">height</span>: <span class="ident">trim_f64</span>(<span class="ident">height</span>),
        }
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">zero</span>() -&gt; <span class="self">Self</span> {
        <span class="ident">ScreenDims</span> {
            <span class="ident">width</span>: <span class="number">0.0</span>,
            <span class="ident">height</span>: <span class="number">0.0</span>,
        }
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">square</span>(<span class="ident">square</span>: <span class="ident">f64</span>) -&gt; <span class="self">Self</span> {
        <span class="ident"><span class="self">Self</span>::new</span>(<span class="ident">square</span>, <span class="ident">square</span>)
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">pad</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">edge_insets</span>: <span class="ident">EdgeInsets</span>) -&gt; <span class="self">Self</span> {
        <span class="self">Self</span> {
            <span class="ident">width</span>: <span class="self">self</span>.<span class="ident">width</span> <span class="op">+</span> <span class="ident">edge_insets</span>.<span class="ident">left</span> <span class="op">+</span> <span class="ident">edge_insets</span>.<span class="ident">right</span>,
            <span class="ident">height</span>: <span class="self">self</span>.<span class="ident">height</span> <span class="op">+</span> <span class="ident">edge_insets</span>.<span class="ident">top</span> <span class="op">+</span> <span class="ident">edge_insets</span>.<span class="ident">bottom</span>,
        }
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">top_left_for_corner</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">corner</span>: <span class="ident">ScreenPt</span>, <span class="ident">canvas</span>: <span class="kw-2">&amp;</span><span class="ident">Canvas</span>) -&gt; <span class="ident">ScreenPt</span> {
        <span class="comment">// TODO Ideally also avoid covered canvas areas</span>
        <span class="kw">if</span> <span class="ident">corner</span>.<span class="ident">x</span> <span class="op">+</span> <span class="self">self</span>.<span class="ident">width</span> <span class="op">&lt;</span> <span class="ident">canvas</span>.<span class="ident">window_width</span> {
            <span class="comment">// corner.x is the left corner</span>
            <span class="kw">if</span> <span class="ident">corner</span>.<span class="ident">y</span> <span class="op">+</span> <span class="self">self</span>.<span class="ident">height</span> <span class="op">&lt;</span> <span class="ident">canvas</span>.<span class="ident">window_height</span> {
                <span class="comment">// corner.y is the top corner</span>
                <span class="ident">corner</span>
            } <span class="kw">else</span> {
                <span class="comment">// corner.y is the bottom corner</span>
                <span class="ident">ScreenPt::new</span>(<span class="ident">corner</span>.<span class="ident">x</span>, <span class="ident">corner</span>.<span class="ident">y</span> <span class="op">-</span> <span class="self">self</span>.<span class="ident">height</span>)
            }
        } <span class="kw">else</span> {
            <span class="comment">// corner.x is the right corner</span>
            <span class="kw">if</span> <span class="ident">corner</span>.<span class="ident">y</span> <span class="op">+</span> <span class="self">self</span>.<span class="ident">height</span> <span class="op">&lt;</span> <span class="ident">canvas</span>.<span class="ident">window_height</span> {
                <span class="comment">// corner.y is the top corner</span>
                <span class="ident">ScreenPt::new</span>(<span class="ident">corner</span>.<span class="ident">x</span> <span class="op">-</span> <span class="self">self</span>.<span class="ident">width</span>, <span class="ident">corner</span>.<span class="ident">y</span>)
            } <span class="kw">else</span> {
                <span class="comment">// corner.y is the bottom corner</span>
                <span class="ident">ScreenPt::new</span>(<span class="ident">corner</span>.<span class="ident">x</span> <span class="op">-</span> <span class="self">self</span>.<span class="ident">width</span>, <span class="ident">corner</span>.<span class="ident">y</span> <span class="op">-</span> <span class="self">self</span>.<span class="ident">height</span>)
            }
        }
    }
}

<span class="kw">impl</span> <span class="ident">From</span><span class="op">&lt;</span><span class="ident">winit::dpi::LogicalSize</span><span class="op">&lt;</span><span class="ident">f64</span><span class="op">&gt;</span><span class="op">&gt;</span> <span class="kw">for</span> <span class="ident">ScreenDims</span> {
    <span class="kw">fn</span> <span class="ident">from</span>(<span class="ident">size</span>: <span class="ident">winit::dpi::LogicalSize</span><span class="op">&lt;</span><span class="ident">f64</span><span class="op">&gt;</span>) -&gt; <span class="ident">ScreenDims</span> {
        <span class="ident">ScreenDims</span> {
            <span class="ident">width</span>: <span class="ident">size</span>.<span class="ident">width</span>,
            <span class="ident">height</span>: <span class="ident">size</span>.<span class="ident">height</span>,
        }
    }
}

<span class="kw">impl</span> <span class="ident">From</span><span class="op">&lt;</span><span class="ident">ScreenDims</span><span class="op">&gt;</span> <span class="kw">for</span> <span class="ident">winit::dpi::LogicalSize</span><span class="op">&lt;</span><span class="ident">f64</span><span class="op">&gt;</span> {
    <span class="kw">fn</span> <span class="ident">from</span>(<span class="ident">dims</span>: <span class="ident">ScreenDims</span>) -&gt; <span class="ident">winit::dpi::LogicalSize</span><span class="op">&lt;</span><span class="ident">f64</span><span class="op">&gt;</span> {
        <span class="ident">winit::dpi::LogicalSize::new</span>(<span class="ident">dims</span>.<span class="ident">width</span>, <span class="ident">dims</span>.<span class="ident">height</span>)
    }
}

<span class="kw">impl</span> <span class="ident">From</span><span class="op">&lt;</span><span class="ident">f64</span><span class="op">&gt;</span> <span class="kw">for</span> <span class="ident">ScreenDims</span> {
    <span class="kw">fn</span> <span class="ident">from</span>(<span class="ident">square</span>: <span class="ident">f64</span>) -&gt; <span class="ident">ScreenDims</span> {
        <span class="ident">ScreenDims::square</span>(<span class="ident">square</span>)
    }
}

<span class="kw">impl</span> <span class="ident">From</span><span class="op">&lt;</span><span class="ident">i64</span><span class="op">&gt;</span> <span class="kw">for</span> <span class="ident">ScreenDims</span> {
    <span class="kw">fn</span> <span class="ident">from</span>(<span class="ident">square</span>: <span class="ident">i64</span>) -&gt; <span class="ident">ScreenDims</span> {
        <span class="ident">ScreenDims::square</span>(<span class="ident">square</span> <span class="kw">as</span> <span class="ident">f64</span>)
    }
}

<span class="doccomment">/// (Width, Height) -&gt; ScreenDims</span>
<span class="kw">impl</span> <span class="ident">From</span><span class="op">&lt;</span>(<span class="ident">f64</span>, <span class="ident">f64</span>)<span class="op">&gt;</span> <span class="kw">for</span> <span class="ident">ScreenDims</span> {
    <span class="kw">fn</span> <span class="ident">from</span>(<span class="ident">width_and_height</span>: (<span class="ident">f64</span>, <span class="ident">f64</span>)) -&gt; <span class="ident">ScreenDims</span> {
        <span class="ident">ScreenDims::new</span>(<span class="ident">width_and_height</span>.<span class="number">0</span>, <span class="ident">width_and_height</span>.<span class="number">1</span>)
    }
}

<span class="kw">impl</span> <span class="ident">From</span><span class="op">&lt;</span><span class="ident">geom::Bounds</span><span class="op">&gt;</span> <span class="kw">for</span> <span class="ident">ScreenDims</span> {
    <span class="kw">fn</span> <span class="ident">from</span>(<span class="ident">bounds</span>: <span class="ident">geom::Bounds</span>) -&gt; <span class="self">Self</span> {
        <span class="ident">ScreenDims::new</span>(<span class="ident">bounds</span>.<span class="ident">width</span>(), <span class="ident">bounds</span>.<span class="ident">height</span>())
    }
}

<span class="kw">impl</span> <span class="ident">From</span><span class="op">&lt;</span><span class="ident">ScreenDims</span><span class="op">&gt;</span> <span class="kw">for</span> <span class="ident">stretch::geometry::Size</span><span class="op">&lt;</span><span class="ident">stretch::style::Dimension</span><span class="op">&gt;</span> {
    <span class="kw">fn</span> <span class="ident">from</span>(<span class="ident">dims</span>: <span class="ident">ScreenDims</span>) -&gt; <span class="self">Self</span> {
        <span class="self">Self</span> {
            <span class="ident">width</span>: <span class="ident">stretch::style::Dimension::Points</span>(<span class="ident">dims</span>.<span class="ident">width</span> <span class="kw">as</span> <span class="ident">f32</span>),
            <span class="ident">height</span>: <span class="ident">stretch::style::Dimension::Points</span>(<span class="ident">dims</span>.<span class="ident">height</span> <span class="kw">as</span> <span class="ident">f32</span>),
        }
    }
}
</code></pre></div>
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