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HTML 캔버스 textBaseline 속성

❮ 캔버스 개체

예시

y=100에 빨간색 선을 그린 다음 다른 textBaseline 값을 사용하여 y=100에 각 단어를 배치합니다.

브라우저는 HTML5캔버스태그를 지원하지 않습니다.

자바스크립트:

var c = document.getElementById("myCanvas");
var ctx = c.getContext("2d");

//Draw a red line at y=100
ctx.strokeStyle = "red";
ctx.moveTo(5, 100);
ctx.lineTo(395, 100);
ctx.stroke();

ctx.font = "20px Arial"

//Place each word at y=100 with different textBaseline values
ctx.textBaseline = "top";
ctx.fillText("Top", 5, 100);
ctx.textBaseline = "bottom";
ctx.fillText("Bottom", 50, 100);
ctx.textBaseline = "middle";
ctx.fillText("Middle", 120, 100);
ctx.textBaseline = "alphabetic";
ctx.fillText("Alphabetic", 190, 100);
ctx.textBaseline = "hanging";
ctx.fillText("Hanging", 290, 100);


브라우저 지원

표의 숫자는 속성을 완전히 지원하는 첫 번째 브라우저 버전을 지정합니다.

Property
textBaseline 4.0 9.0 3.6 4.0 10.1

참고: textBaseline 속성은 특히 "hanging" 또는 "ideographic"을 사용할 때 브라우저에서 다르게 작동할 수 있습니다.


정의 및 사용

textBaseline 속성은 텍스트를 그릴 때 사용되는 현재 텍스트 기준선을 설정하거나 반환합니다.

아래 그림은 textBaseline 속성이 지원하는 다양한 기준선을 보여줍니다.

텍스트베이스라인 일러스트레이션

참고: fillText ()strokeText() 메서드는 캔버스에 텍스트를 배치할 때 지정된 textBaseline 값을 사용합니다.

기본값: 알파벳
자바스크립트 구문: context .textBaseline = "알파벳|상단|행잉|중간|표의문자|하단";

속성 값

Values Description Play it
alphabetic Default. The text baseline is the normal alphabetic baseline
top The text baseline is the top of the em square
hanging The text baseline is the hanging baseline
middle The text baseline is the middle of the em square
ideographic The text baseline is the ideographic baseline
bottom The text baseline is the bottom of the bounding box

❮ 캔버스 개체