<!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="Source to the Rust file `src/canvas/managed/canvas_text.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>canvas_text.rs.html -- source</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="../../../../dark.css"><link rel="stylesheet" type="text/css" href="../../../../light.css" id="themeStyle"><script src="../../../../storage.js"></script><noscript><link rel="stylesheet" href="../../../../noscript.css"></noscript><link rel="shortcut icon" href="../../../../favicon.ico"><style type="text/css">#crate-search{background-image:url("../../../../down-arrow.svg");}</style></head><body class="rustdoc source"><!--[if 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settings"></a></div></form></nav><section id="main" class="content"><pre class="line-numbers"><span id="1"> 1</span> <span id="2"> 2</span> <span id="3"> 3</span> <span id="4"> 4</span> <span id="5"> 5</span> <span id="6"> 6</span> <span id="7"> 7</span> <span id="8"> 8</span> <span id="9"> 9</span> <span id="10">10</span> <span id="11">11</span> <span id="12">12</span> <span id="13">13</span> <span id="14">14</span> <span id="15">15</span> <span id="16">16</span> <span id="17">17</span> <span id="18">18</span> <span id="19">19</span> <span id="20">20</span> <span id="21">21</span> <span id="22">22</span> <span id="23">23</span> <span id="24">24</span> <span id="25">25</span> <span id="26">26</span> <span id="27">27</span> <span id="28">28</span> <span id="29">29</span> <span id="30">30</span> <span id="31">31</span> <span id="32">32</span> <span id="33">33</span> <span id="34">34</span> <span id="35">35</span> <span id="36">36</span> <span id="37">37</span> <span id="38">38</span> <span id="39">39</span> <span id="40">40</span> <span id="41">41</span> <span id="42">42</span> <span id="43">43</span> <span id="44">44</span> <span id="45">45</span> <span id="46">46</span> <span id="47">47</span> <span id="48">48</span> <span id="49">49</span> <span id="50">50</span> <span id="51">51</span> <span id="52">52</span> <span id="53">53</span> <span id="54">54</span> <span id="55">55</span> <span id="56">56</span> <span id="57">57</span> <span id="58">58</span> <span id="59">59</span> <span id="60">60</span> <span id="61">61</span> <span id="62">62</span> <span id="63">63</span> <span id="64">64</span> <span id="65">65</span> <span id="66">66</span> <span id="67">67</span> <span id="68">68</span> <span id="69">69</span> <span id="70">70</span> <span id="71">71</span> <span id="72">72</span> <span id="73">73</span> </pre><div class="example-wrap"><pre class="rust "> <span class="kw">use</span> <span class="ident">vulkano</span>::<span class="ident">descriptor</span>::<span class="ident">descriptor_set</span>::<span class="ident">PersistentDescriptorSet</span>; <span class="kw">use</span> <span class="ident">rusttype</span>::{<span class="ident">Font</span>, <span class="ident">PositionedGlyph</span>, <span class="ident">Scale</span>, <span class="ident">Rect</span>, <span class="ident">point</span>, <span class="ident">GlyphId</span>}; <span class="kw">use</span> <span class="ident">rusttype</span>::<span class="ident">gpu_cache</span>::<span class="ident">Cache</span>; <span class="kw">use</span> <span class="ident">vulkano</span>::<span class="ident">buffer</span>::{<span class="ident">BufferAccess</span>, <span class="ident">BufferUsage</span>, <span class="ident">ImmutableBuffer</span>, <span class="ident">CpuAccessibleBuffer</span>}; <span class="kw">use</span> <span class="ident">vulkano</span>::<span class="ident">device</span>::{<span class="ident">Device</span>, <span class="ident">Queue</span>}; <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">sync</span>::<span class="ident">Arc</span>; <span class="kw">use</span> <span class="ident">vulkano</span>::<span class="ident">command_buffer</span>::{<span class="ident">AutoCommandBufferBuilder</span>, <span class="ident">DynamicState</span>}; <span class="kw">use</span> <span class="ident">vulkano</span>::<span class="ident">image</span>::{<span class="ident">ImmutableImage</span>, <span class="ident">ImageUsage</span>, <span class="ident">ImageLayout</span>, <span class="ident">Dimensions</span>}; <span class="kw">use</span> <span class="ident">vulkano</span>::<span class="ident">format</span>::<span class="ident">ClearValue</span>; <span class="kw">use</span> <span class="ident">vulkano</span>::<span class="ident">format</span>::<span class="ident">Format</span>::<span class="ident">R8Unorm</span>; <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">fs</span>::<span class="ident">File</span>; <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">io</span>::<span class="ident">Read</span>; <span class="comment">//pub struct Glyph {}</span> <span class="comment">//</span> <span class="comment">///// So currently, I'm using these as container classes which vkprocessor owns</span> <span class="comment">///// I then use a CanvasFrame which accumulates lists of handles and vertices.</span> <span class="comment">//pub struct CanvasFonto {</span> <span class="comment">// font: Font<'static>,</span> <span class="comment">// font_name: String,</span> <span class="comment">// allocated_font_atlas: Arc<(dyn BufferAccess + Send + Sync)>,</span> <span class="comment">//}</span> <span class="comment">//</span> <span class="comment">//impl CanvasFonto {</span> <span class="comment">//</span> <span class="comment">// pub fn parse_to_vertex_buffer(font: Font) -> Vec<TextVertex3D> {</span> <span class="comment">//</span> <span class="comment">// let mut current_x = 0;</span> <span class="comment">// let mut current_y = 0;</span> <span class="comment">//</span> <span class="comment">// let mut accumulator = Vec::new();</span> <span class="comment">//</span> <span class="comment">// for i in (0..255) {</span> <span class="comment">//</span> <span class="comment">// let glyph = font.glyph(GlyphId{ 0: 40 });</span> <span class="comment">//</span> <span class="comment">// let glyph_data = glyph.get_data().unwrap();</span> <span class="comment">//</span> <span class="comment">// for vertex in glyph_data.clone().shape.clone().unwrap() {</span> <span class="comment">// accumulator.push(TextVertex3D {</span> <span class="comment">// position: [vertex.x as f32, vertex.y as f32, 0.0],</span> <span class="comment">// });</span> <span class="comment">// }</span> <span class="comment">// }</span> <span class="comment">//</span> <span class="comment">// accumulator</span> <span class="comment">// }</span> <span class="comment">// /// Load the font</span> <span class="comment">// pub fn new(device: Arc<Device>, queue: Arc<Queue>, font_name: String) -> CanvasFonto {</span> <span class="comment">//</span> <span class="comment">// let font = Font::from_bytes({</span> <span class="comment">// let mut f = File::open("resources/fonts/sansation.ttf").expect("Font file not found");</span> <span class="comment">// let mut font_data = Vec::new();</span> <span class="comment">// f.read_to_end(&mut font_data).expect("Dont know");</span> <span class="comment">// font_data</span> <span class="comment">// }).unwrap();</span> <span class="comment">//</span> <span class="comment">// CanvasFont {</span> <span class="comment">// font: font.clone(),</span> <span class="comment">// font_name: font_name,</span> <span class="comment">// allocated_font_atlas: ImmutableBuffer::from_iter(</span> <span class="comment">// CanvasFont::parse_to_vertex_buffer(font.clone()).iter().cloned(),</span> <span class="comment">// BufferUsage::vertex_buffer(), queue).unwrap().0,</span> <span class="comment">// }</span> <span class="comment">// }</span> <span class="comment">//</span> <span class="comment">// /// Generate a vertex buffer from the font</span> <span class="comment">// pub fn get_vertex_buffer(&self) -> Arc<(dyn BufferAccess + Send + Sync)> {</span> <span class="comment">// return self.allocated_font_atlas.clone();</span> <span class="comment">// }</span> <span class="comment">//</span> <span class="comment">//}</span></pre></div> </section><section id="search" class="content hidden"></section><section class="footer"></section><aside id="help" class="hidden"><div><h1 class="hidden">Help</h1><div class="shortcuts"><h2>Keyboard Shortcuts</h2><dl><dt><kbd>?</kbd></dt><dd>Show this help dialog</dd><dt><kbd>S</kbd></dt><dd>Focus the search field</dd><dt><kbd>↑</kbd></dt><dd>Move up in search results</dd><dt><kbd>↓</kbd></dt><dd>Move down in search results</dd><dt><kbd>↹</kbd></dt><dd>Switch tab</dd><dt><kbd>⏎</kbd></dt><dd>Go to 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