mirror of
https://github.com/wassname/CanvasTextWrapper.git
synced 2026-06-28 03:31:36 +08:00
Vadim
161 lines
5.4 KiB
HTML
161 lines
5.4 KiB
HTML
<!DOCTYPE HTML>
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<html>
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<head>
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<meta charset="utf-8">
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<link href='http://fonts.googleapis.com/css?family=Open+Sans:400,700,600' rel='stylesheet' type='text/css'>
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<link rel="stylesheet" href="css/reset.css">
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<link rel="stylesheet" href="css/styles.css">
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<script src="js/CanvasTextWrapper.js"></script>
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<script src="js/options.js"></script>
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<script src="js/examples.js"></script>
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<title>CanvasTextWrapper</title>
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</head>
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<body>
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<header>
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<p>CanvasTextWrapper</p>
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<p class="description">
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Pure JavaScript canvas text wrapper that automatically splits a string into lines on specified rule with
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alignment and padding.
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</p>
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</header>
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<article>
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<h2>Syntax</h2><br/>
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<p class="white-block">CanvasTextWrapper(HTMLCanvasElement, String [, Options]);</p><br/>
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<div>
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<div class="emph">Options</div>
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- is an object with the following available properties and values:
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</div>
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<ul class="syntax">
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<li>
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<div class="emph">font</div>
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(String) - text style that includes font size in px, weight, font family, etc. Similar to CSS font shorthand
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property
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</li>
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<li>
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<div class="emph">lineHeight</div>
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(Number or String)
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<ul class="values">
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<li>number - n times font size where 1 is equivalent to '100%'</li>
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<li>"%"</li>
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<li>"px"</li>
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</ul>
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</li>
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<li>
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<div class="emph">textAlign</div>
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(String) - horizontal alignment of each line
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<ul class="values">
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<li>"left"</li>
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<li>"center"</li>
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<li>"right"</li>
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</ul>
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</li>
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<li>
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<div class="emph">verticalAlign</div>
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(String) - vertical alignment of the whole text block
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<ul class="values">
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<li>"top"</li>
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<li>"middle"</li>
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<li>"bottom"</li>
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</ul>
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</li>
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<li>
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<div class="emph">paddingX</div>
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(Number) - horizontal padding (in px) set equally on both, left and right sides
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</li>
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<li>
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<div class="emph">paddingY</div>
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(Number) - vertical padding (in px) set equally on both, top and bottom sides
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</li>
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<li>
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<div class="emph">fitParent</div>
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(Boolean) - parameter that controls which element to fit
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<ul class="values">
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<li>true - fit canvas parent's width instead of canvas own width</li>
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<li>false - fit canvas width</li>
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</ul>
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</li>
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<li>
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<div class="emph">lineBreak</div>
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(String) - text split rule
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<ul class="values">
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<li>"auto" - text fills padded container going to a next line on a whole word</li>
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<li>"word" - each next word will be placed on a new line</li>
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</ul>
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</li>
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<li>
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<div class="emph">sizeToFill</div>
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(Boolean) - auto font size to fill text container
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<ul class="values">
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<li>true - ignore given font size/line height and resize text to fill its padded container</li>
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<li>false - use specified or default font size</li>
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</ul>
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</li>
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<li>
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<div class="emph">strokeText</div>
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(Boolean) - if enabled, all lines match the same width with flexed spaces between words (one-word lines are
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ignored)
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</li>
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<li>
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<div class="emph">justifyLines</div>
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(Boolean) - if enabled, text breaks on every new line character "\n"
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</li>
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<p>
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NOTE: if a single word is too long to fit the width with specified font size, it will break on any letter
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unless "sizeToFill" option is enabled.
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</p>
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</ul>
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<h2>Default Options</h2><br/>
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<pre class="white-block">
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{
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<strong>font</strong>: "18px Arial, sans-serif",
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<strong>lineHeight</strong>: 1,
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<strong>textAlign</strong>: "left",
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<strong>verticalAlign</strong>: "top",
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<strong>paddingX</strong>: 0,
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<strong>paddingY</strong>: 0,
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<strong>fitParent</strong>: false,
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<strong>lineBreak</strong>: "auto",
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<strong>sizeToFill</strong>: false,
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<strong>allowNewLine</strong>: true,
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<strong>justifyLines</strong>: false,
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<strong>strokeText</strong>: false
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}
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</pre>
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<h2>Usage</h2><br/>
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<p>
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Configure context settings properties such as "fillStyle", "lineWidth" or "strokeStyle" before using
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CanvasTextWrapper like so:
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</p>
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<pre class="white-block">
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var canvas = document.getElementById("#canvasText");
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canvas.width = 200;
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canvas.height = 200;
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context = canvas.getContext("2d");
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context.lineWidth = 2;
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context.strokeStyle = "#ff0000";
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CanvasTextWrapper(canvas,"Hello"); //default options will apply
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</pre>
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<h2>Installation</h2><br/>
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<p class="white-block">
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bower install canvas-text-wrapper<br/>
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npm install canvas-text-wrapper
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</p>
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</article>
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<section>
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<h2>Examples</h2>
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</section>
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<footer>
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← <a href="https://github.com/namniak/CanvasTextWrapper">View on GitHub</a>
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</footer>
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</body>
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</html>
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