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author | Peter Bengtsson <mail@peterbe.com> | 2020-12-08 14:42:52 -0500 |
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committer | Peter Bengtsson <mail@peterbe.com> | 2020-12-08 14:42:52 -0500 |
commit | 074785cea106179cb3305637055ab0a009ca74f2 (patch) | |
tree | e6ae371cccd642aa2b67f39752a2cdf1fd4eb040 /files/ru/web/api/canvasrenderingcontext2d/textbaseline | |
parent | da78a9e329e272dedb2400b79a3bdeebff387d47 (diff) | |
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diff --git a/files/ru/web/api/canvasrenderingcontext2d/textbaseline/index.html b/files/ru/web/api/canvasrenderingcontext2d/textbaseline/index.html new file mode 100644 index 0000000000..545cf211b5 --- /dev/null +++ b/files/ru/web/api/canvasrenderingcontext2d/textbaseline/index.html @@ -0,0 +1,100 @@ +--- +title: CanvasRenderingContext2D.textBaseline +slug: Web/API/CanvasRenderingContext2D/textBaseline +tags: + - API + - Canvas + - Property +translation_of: Web/API/CanvasRenderingContext2D/textBaseline +--- +<div>{{APIRef}}</div> + +<p><code><strong>CanvasRenderingContext2D</strong></code><strong><code>.textBaseline</code></strong> - свойство Canvas 2D API, указывающее на текущую базовую линию при рисовании текста.</p> + +<h2 id="Синтаксис">Синтаксис</h2> + +<pre class="syntaxbox"><em>ctx</em>.textBaseline = "top" || "hanging" || "middle" || "alphabetic" || "ideographic" || "bottom"; +</pre> + +<h3 id="Опции">Опции</h3> + +<p>Возможные значения:</p> + +<dl> + <dt><code>"top"</code></dt> + <dd>The text baseline is the top of the em square.</dd> + <dt><code>"hanging"</code></dt> + <dd>The text baseline is the hanging baseline. (Used by Tibetan and other Indic scripts.)</dd> + <dt><code>"middle"</code></dt> + <dd>The text baseline is the middle of the em square.</dd> + <dt><code>"alphabetic"</code></dt> + <dd>The text baseline is the normal alphabetic baseline. Значение по умолчанию.</dd> + <dt><code>"ideographic"</code></dt> + <dd>The text baseline is the ideographic baseline; this is the bottom of the body of the characters, if the main body of characters protrudes beneath the alphabetic baseline. (Used by Chinese, Japanese, and Korean scripts.)</dd> + <dt><code>"bottom"</code></dt> + <dd>The text baseline is the bottom of the bounding box. This differs from the ideographic baseline in that the ideographic baseline doesn't consider descenders.</dd> +</dl> + +<h2 id="Примеры">Примеры</h2> + +<h3 id="Сравнение_значений_свойства">Сравнение значений свойства</h3> + +<p>Этот пример демонстрирует различные значения свойства <code>textBaseline</code> и отображение линий при их приминениях.</p> + +<h4 id="HTML">HTML</h4> + +<pre class="brush: html"><canvas id="canvas" width="550" height="500"></canvas> +</pre> + +<h4 id="JavaScript">JavaScript</h4> + +<pre class="brush: js">const canvas = document.getElementById('canvas'); +const ctx = canvas.getContext('2d'); + +const baselines = ['top', 'hanging', 'middle', 'alphabetic', 'ideographic', 'bottom']; +ctx.font = '36px serif'; +ctx.strokeStyle = 'red'; + +baselines.forEach(function (baseline, index) { + ctx.textBaseline = baseline; + let y = 75 + index * 75; + ctx.beginPath(); + ctx.moveTo(0, y + 0.5); + ctx.lineTo(550, y + 0.5); + ctx.stroke(); + ctx.fillText('Abcdefghijklmnop (' + baseline + ')', 0, y); +}); +</pre> + +<h4 id="Результат">Результат</h4> + +<p>{{ EmbedLiveSample('Comparison_of_property_values', 700, 550) }}</p> + +<h2 id="Спецификации">Спецификации</h2> + +<table class="standard-table"> + <tbody> + <tr> + <th scope="col">Спецификация</th> + <th scope="col">Статус</th> + <th scope="col">Комментарий</th> + </tr> + <tr> + <td>{{SpecName('HTML WHATWG', "scripting.html#dom-context-2d-textbaseline", "CanvasRenderingContext2D.textBaseline")}}</td> + <td>{{Spec2('HTML WHATWG')}}</td> + <td> </td> + </tr> + </tbody> +</table> + +<h2 id="Поддержка_браузерами">Поддержка браузерами</h2> + + + +<p>{{Compat("api.CanvasRenderingContext2D.textBaseline")}}</p> + +<h2 id="Смотрите_также">Смотрите также</h2> + +<ul> + <li>Интерфейс определяющий это свойство: {{domxref("CanvasRenderingContext2D")}}</li> +</ul> |