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canvas-6font.html

2015-11-20 17:53 381 查看
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<canvas id="canvas" style="margin:0 auto;border:1px #ddd solid">
The current browser does not support Canvas, can replace the browser a try!
</canvas>

<script>

window.onload = function(){
var canvas = document.getElementById('canvas');

canvas.width = 1024;
canvas.height = 2800;

if(canvas.getContext('2d')){
var context = canvas.getContext('2d');

// fill
context.font = "bold 60px Arial";
context.fillStyle = "#058";
context.fillText("hello cynthia",40,100);

// stroke
context.lineWidth = 1;
context.strokeStyle = "red"
context.strokeText("hello cynthia",40,200);

// font的第四个参数 控制文字长度
context.lineWidth = 1;
context.strokeStyle = "green"
context.strokeText("hello cynthia",40,300,60);

// fill + linearGradient
var linearGrad = context.createLinearGradient(0,0,300,0);
linearGrad.addColorStop(0.0,'red');
linearGrad.addColorStop(0.25,'yellow');
linearGrad.addColorStop(0.5,'green');
linearGrad.addColorStop(0.75,'blue');
linearGrad.addColorStop(1.0,'pink');
context.fillStyle = linearGrad;
context.fillText("hello cynthia",40,400);

// fill + image背景
var backgroundImage = new Image();
backgroundImage.src = "img/1.png";
backgroundImage.onload = function(){
var pattern = context.createPattern(backgroundImage,'repeat');
context.fillStyle = pattern;
context.fillText("hello cynthia",40,500);
}

// fill + image背景 + 描边
var backgroundImage = new Image();
backgroundImage.src = "img/1.png";
backgroundImage.onload = function(){
var pattern = context.createPattern(backgroundImage,'repeat');
context.fillStyle = pattern;
context.fillText("hello cynthia",40,600);
context.strokeStyle = linearGrad;
context.strokeText("hello cynthia",40,600);
}

context.fillStyle="#508"
// font-style 1.1
context.font = "bold 40px sans-serif";
context.fillText("CYNTHIA娆墨旧染",40,700);
// font-style 1.2
context.font = "italic bold 40px sans-serif";
context.fillText("CYNTHIA娆墨旧染",40,800);
// font-style 1.3
context.font = "oblique bold 40px sans-serif";
context.fillText("CYNTHIA娆墨旧染",40,800);

context.fillStyle="#485"
// font-variant 1.1
context.font = "small-caps bold 40px sans-serif";
context.fillText("CYNTHIA娆墨旧染",40,900);

context.fillStyle="#234"
// font-weight 1.1
context.font = "lighter 40px sans-serif";
context.fillText("CYNTHIA娆墨旧染",40,1000);
// font-weight 1.2
context.font = "normal 40px sans-serif";
context.fillText("CYNTHIA娆墨旧染",40,1100);
// font-weight 1.3
context.font = "bold 40px sans-serif";
context.fillText("CYNTHIA娆墨旧染",40,1200);
// font-weight 1.4
context.font = "boler 40px sans-serif";
context.fillText("CYNTHIA娆墨旧染",40,1300);

context.fillStyle="#54b"
// font-size 1.1
context.font = "xx-small 40px sans-serif";
context.fillText("CYNTHIA娆墨旧染",40,1400);
// font-size 1.2
context.font = "x-small 40px sans-serif";
context.fillText("CYNTHIA娆墨旧染",40,1500);
// font-size 1.3
context.font = "small 40px sans-serif";
context.fillText("CYNTHIA娆墨旧染",40,1600);
// font-size 1.4
context.font = "large 40px sans-serif";
context.fillText("CYNTHIA娆墨旧染",40,1700);
// font-size 1.5
context.font = "x-large 40px sans-serif";
context.fillText("CYNTHIA娆墨旧染",40,1800);
// font-size 1.6
context.font = "xx-large 40px sans-serif";
context.fillText("CYNTHIA娆墨旧染",40,1900);

// textAlign
context.fillStyle = "red";
context.font = "bold 40px sans-serif";
// 1.1
context.textAlign = "left";
context.fillText("textAlign=left",40,2000)
// 1.2
context.textAlign = "center";
context.fillText("textAlign=center",40,2100)
// 1.3
context.textAlign = "right";
context.fillText("textAlign=right",40,2200)

// Baseline
context.fillStyle = "green";
context.font = "bold 40px sans-serif";
// 1.1
context.textBaseline = "top";
context.fillText("textBaseline=top",40,2300)
// 1.2
context.textBaseline = "middle";
context.fillText("textBaseline=middle",40,2400)
// 1.3
context.textBaseline = "bottom";
context.fillText("textBaseline=bottom",40,2500)

}else{
alert('当前游览器不支持Canvas，请更换游览器后再试！');
}
}

</script>
</body>
<script>
/*文字

context.font = "bold 40px Arial"

context.fillText(string,x,y,[maxlen])

context.strokeText(string,x,y,[maxlen])

font 默认值 "20px sans-serif"

font-style
normal
italic 斜体
oblique 倾斜字体

font-variant
normal
small-caps  英文小写
font-size
xx-small
x-small
meium
large
x-large
xx-large
font-family
可以用逗号进行字体备选
@font-face
font-weight
lighter
normal
bold
bolder

文本对齐
//水平 以文字开始点的垂直线为基准
context.textAlign = lefe
center
right

//垂直    以文字中心的水平线问基准
context.Baseline =  top
middle
bottom
alphabetic （为拉丁字母做的基准线）
ideographic （为方块文字做的基准线）
hanging （为印度文做的基准线）
*/
</script>
</html>
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