/
tests.js
2012 lines (1720 loc) · 45.8 KB
/
tests.js
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var tests = {};
tests['clearRect()'] = function(ctx){
ctx.fillRect(25,25,100,100);
ctx.clearRect(45,45,60,60);
ctx.fillRect(50,50,50,50);
};
tests['strokeRect()'] = function(ctx){
ctx.fillRect(25,25,100,100);
ctx.clearRect(45,45,60,60);
ctx.strokeRect(50,50,50,50);
};
tests['fillRect()'] = function(ctx){
function render(level){
ctx.fillStyle = getPointColour(122,122);
ctx.fillRect(0,0,240,240);
renderLevel(level,81,0);
}
function renderLevel(minimumLevel,level,y){
for (var x=0; x < 243 / level; ++x) {
drawBlock(x,y,level);
}
for (var x=0; x < 243 / level; x+=3){
drawBlock(x,y+1,level);
drawBlock(x+2,y+1,level);
}
for (var x=0; x < 243 / level; ++x){
drawBlock(x,y+2,level);
}
if ((y += 3) >= 243 / level){
y=0;
level /= 3;
}
if (level >= minimumLevel){
renderLevel(minimumLevel, level, y);
}
}
function drawBlock(x,y,level){
ctx.fillStyle = getPointColour(
x * level + (level-1) / 2
, y * level + (level-1) / 2);
ctx.fillRect(
x * level
, y * level
, level
, level
);
}
function getPointColour(x,y){
x= x / 121.5 - 1;
y= -y / 121.5 + 1;
var x2y2 = x * x + y * y;
if (x2y2 > 1){
return '#000';
} else {
var root = Math.sqrt(1 - x2y2);
var x3d = x * 0.7071067812 + root / 2 - y / 2;
var y3d = x * 0.7071067812 - root / 2 + y / 2;
var z3d = 0.7071067812 * root + 0.7071067812 * y;
var brightness= -x / 2 + root * 0.7071067812 + y / 2;
if (brightness < 0) brightness = 0;
return ''
+ 'rgb(' + Math.round(brightness * 127.5 * (1 - y3d))
+ ',' + Math.round(brightness * 127.5 * (x3d + 1))
+ ',' + Math.round(brightness * 127.5 * (z3d + 1))
+ ')'
;
}
}
render(1);
};
tests['lineTo()'] = function(ctx){
// Filled triangle
ctx.beginPath();
ctx.moveTo(25.5,25);
ctx.lineTo(105,25);
ctx.lineTo(25,105);
ctx.fill();
// Stroked triangle
ctx.beginPath();
ctx.moveTo(125,125);
ctx.lineTo(125,45);
ctx.lineTo(45,125);
ctx.closePath();
ctx.stroke();
};
tests['arc()'] = function(ctx){
ctx.beginPath();
ctx.arc(75,75,50,0,Math.PI*2,true); // Outer circle
ctx.moveTo(110,75);
ctx.arc(75,75,35,0,Math.PI,false); // Mouth
ctx.moveTo(65,65);
ctx.arc(60,65,5,0,Math.PI*2,true); // Left eye
ctx.moveTo(95,65);
ctx.arc(90,65,5,0,Math.PI*2,true); // Right eye
ctx.stroke();
};
tests['arc() 2'] = function(ctx){
for(var i=0;i<4;i++){
for(var j=0;j<3;j++){
ctx.beginPath();
var x = 25+j*50; // x coordinate
var y = 25+i*50; // y coordinate
var radius = 20; // Arc radius
var startAngle = 0; // Starting point on circle
var endAngle = Math.PI+(Math.PI*j)/2; // End point on circle
var anticlockwise = i%2==0 ? false : true; // clockwise or anticlockwise
ctx.arc(x,y,radius,startAngle,endAngle, anticlockwise);
if (i>1){
ctx.fill();
} else {
ctx.stroke();
}
}
}
};
tests['arcTo()'] = function(ctx){
ctx.fillStyle = '#08C8EE';
ctx.translate(-50,-50);
ctx.moveTo(120, 100);
ctx.lineTo(180, 100);
ctx.arcTo(200, 100, 200, 120, 5);
ctx.lineTo(200, 180);
ctx.arcTo(200, 200, 180, 200, 20);
ctx.lineTo(120, 200);
ctx.arcTo(100, 200, 100, 180, 20);
ctx.lineTo(100, 120);
ctx.arcTo(100, 100, 120, 100, 20);
ctx.fill();
ctx.font = 'bold 25px Arial';
ctx.fillStyle = '#fff';
ctx.fillText('node', 120, 155);
};
tests['bezierCurveTo()'] = function(ctx){
ctx.beginPath();
ctx.moveTo(75,40);
ctx.bezierCurveTo(75,37,70,25,50,25);
ctx.bezierCurveTo(20,25,20,62.5,20,62.5);
ctx.bezierCurveTo(20,80,40,102,75,120);
ctx.bezierCurveTo(110,102,130,80,130,62.5);
ctx.bezierCurveTo(130,62.5,130,25,100,25);
ctx.bezierCurveTo(85,25,75,37,75,40);
ctx.fill();
};
tests['quadraticCurveTo()'] = function(ctx){
ctx.beginPath();
ctx.moveTo(75,25);
ctx.quadraticCurveTo(25,25,25,62.5);
ctx.quadraticCurveTo(25,100,50,100);
ctx.quadraticCurveTo(50,120,30,125);
ctx.quadraticCurveTo(60,120,65,100);
ctx.quadraticCurveTo(125,100,125,62.5);
ctx.quadraticCurveTo(125,25,75,25);
ctx.stroke();
};
tests['transform()'] = function(ctx){
var sin = Math.sin(Math.PI/6);
var cos = Math.cos(Math.PI/6);
ctx.translate(100, 100);
ctx.scale(.5,.5);
var c = 0;
for (var i=0; i <= 12; i++) {
c = Math.floor(255 / 12 * i);
ctx.fillStyle = "rgb(" + c + "," + c + "," + c + ")";
ctx.fillRect(0, 0, 100, 10);
ctx.transform(cos, sin, -sin, cos, 0, 0);
}
};
tests['rotate()'] = function(ctx){
ctx.rotate(0.4);
ctx.translate(30,0);
ctx.rect(0,0,50,50);
ctx.stroke();
};
tests['rotate() 2'] = function(ctx){
ctx.translate(75,75);
for (var i=1;i<6;i++){ // Loop through rings (from inside to out)
ctx.save();
ctx.fillStyle = 'rgb('+(51*i)+','+(255-51*i)+',255)';
for (var j=0;j<i*6;j++){ // draw individual dots
ctx.rotate(Math.PI*2/(i*6));
ctx.beginPath();
ctx.arc(0,i*12.5,5,0,Math.PI*2,true);
ctx.fill();
}
ctx.restore();
}
};
tests['translate()'] = function(ctx){
ctx.fillRect(0,0,300,300);
for (var i=0;i<3;i++) {
for (var j=0;j<3;j++) {
ctx.save();
ctx.strokeStyle = "#9CFF00";
ctx.translate(50+j*100,50+i*100);
drawSpirograph(ctx,20*(j+2)/(j+1),-8*(i+3)/(i+1),10);
ctx.restore();
}
}
function drawSpirograph(ctx,R,r,O){
var x1 = R-O;
var y1 = 0;
var i = 1;
ctx.beginPath();
ctx.moveTo(x1,y1);
do {
if (i>20000) break;
var x2 = (R+r)*Math.cos(i*Math.PI/72) - (r+O)*Math.cos(((R+r)/r)*(i*Math.PI/72))
var y2 = (R+r)*Math.sin(i*Math.PI/72) - (r+O)*Math.sin(((R+r)/r)*(i*Math.PI/72))
ctx.lineTo(x2,y2);
x1 = x2;
y1 = y2;
i++;
} while (x2 != R-O && y2 != 0 );
ctx.stroke();
}
};
tests['scale()'] = function(ctx){
ctx.strokeStyle = "#fc0";
ctx.lineWidth = 1.5;
ctx.fillRect(0,0,300,300);
// Uniform scaling
ctx.save()
ctx.translate(50,50);
drawSpirograph(ctx,22,6,5); // no scaling
ctx.translate(100,0);
ctx.scale(0.75,0.75);
drawSpirograph(ctx,22,6,5);
ctx.translate(133.333,0);
ctx.scale(0.75,0.75);
drawSpirograph(ctx,22,6,5);
ctx.restore();
// Non-uniform scaling (y direction)
ctx.strokeStyle = "#0cf";
ctx.save()
ctx.translate(50,150);
ctx.scale(1,0.75);
drawSpirograph(ctx,22,6,5);
ctx.translate(100,0);
ctx.scale(1,0.75);
drawSpirograph(ctx,22,6,5);
ctx.translate(100,0);
ctx.scale(1,0.75);
drawSpirograph(ctx,22,6,5);
ctx.restore();
// Non-uniform scaling (x direction)
ctx.strokeStyle = "#cf0";
ctx.save()
ctx.translate(50,250);
ctx.scale(0.75,1);
drawSpirograph(ctx,22,6,5);
ctx.translate(133.333,0);
ctx.scale(0.75,1);
drawSpirograph(ctx,22,6,5);
ctx.translate(177.777,0);
ctx.scale(0.75,1);
drawSpirograph(ctx,22,6,5);
ctx.restore();
function drawSpirograph(ctx,R,r,O){
var x1 = R-O;
var y1 = 0;
var i = 1;
ctx.beginPath();
ctx.moveTo(x1,y1);
do {
if (i>20000) break;
var x2 = (R+r)*Math.cos(i*Math.PI/72) - (r+O)*Math.cos(((R+r)/r)*(i*Math.PI/72))
var y2 = (R+r)*Math.sin(i*Math.PI/72) - (r+O)*Math.sin(((R+r)/r)*(i*Math.PI/72))
ctx.lineTo(x2,y2);
x1 = x2;
y1 = y2;
i++;
} while (x2 != R-O && y2 != 0 );
ctx.stroke();
}
};
tests['rect()'] = function(ctx){
ctx.rect(5,5,50,50);
ctx.strokeStyle = 'yellow';
ctx.fill();
ctx.stroke();
};
tests['clip()'] = function(ctx){
ctx.arc(50,50,50,0,Math.PI * 2,false);
ctx.stroke();
ctx.clip();
ctx.fillStyle = 'rgba(0,0,0,.5)';
ctx.fillRect(0,0,100,100);
};
tests['clip() 2'] = function(ctx){
ctx.fillRect(0,0,150,150);
ctx.translate(75,75);
// Create a circular clipping path
ctx.beginPath();
ctx.arc(0,0,60,0,Math.PI*2,true);
ctx.clip();
// draw background
var lingrad = ctx.createLinearGradient(0,-75,0,75);
lingrad.addColorStop(0, '#232256');
lingrad.addColorStop(1, '#143778');
ctx.fillStyle = lingrad;
ctx.fillRect(-75,-75,150,150);
// draw stars
for (var j=1;j<50;j++){
ctx.save();
ctx.fillStyle = '#fff';
ctx.translate(75-Math.floor(Math.random()*150),
75-Math.floor(Math.random()*150));
drawStar(ctx,Math.floor(Math.random()*4)+2);
ctx.restore();
}
function drawStar(ctx,r){
ctx.save();
ctx.beginPath()
ctx.moveTo(r,0);
for (var i=0;i<9;i++){
ctx.rotate(Math.PI/5);
if(i%2 == 0) {
ctx.lineTo((r/0.525731)*0.200811,0);
} else {
ctx.lineTo(r,0);
}
}
ctx.closePath();
ctx.fill();
ctx.restore();
}
};
tests['createLinearGradient()'] = function(ctx){
var lingrad = ctx.createLinearGradient(0,0,0,150);
lingrad.addColorStop(0, '#00ABEB');
lingrad.addColorStop(0.5, '#fff');
lingrad.addColorStop(0.5, '#26C000');
lingrad.addColorStop(1, '#fff');
var lingrad2 = ctx.createLinearGradient(0,50,0,95);
lingrad2.addColorStop(0.5, '#000');
lingrad2.addColorStop(1, 'rgba(0,0,0,0)');
ctx.fillStyle = lingrad;
ctx.strokeStyle = lingrad2;
ctx.fillRect(10,10,130,130);
ctx.strokeRect(50,50,50,50);
};
tests['createRadialGradient()'] = function(ctx){
// Create gradients
var radgrad = ctx.createRadialGradient(45,45,10,52,50,30);
radgrad.addColorStop(0, '#A7D30C');
radgrad.addColorStop(0.9, '#019F62');
radgrad.addColorStop(1, 'rgba(1,159,98,0)');
var radgrad2 = ctx.createRadialGradient(105,105,20,112,120,50);
radgrad2.addColorStop(0, '#FF5F98');
radgrad2.addColorStop(0.75, '#FF0188');
radgrad2.addColorStop(1, 'rgba(255,1,136,0)');
var radgrad3 = ctx.createRadialGradient(95,15,15,102,20,40);
radgrad3.addColorStop(0, '#00C9FF');
radgrad3.addColorStop(0.8, '#00B5E2');
radgrad3.addColorStop(1, 'rgba(0,201,255,0)');
var radgrad4 = ctx.createRadialGradient(0,150,50,0,140,90);
radgrad4.addColorStop(0, '#F4F201');
radgrad4.addColorStop(0.8, '#E4C700');
radgrad4.addColorStop(1, 'rgba(228,199,0,0)');
// draw shapes
ctx.fillStyle = radgrad4;
ctx.fillRect(0,0,150,150);
ctx.fillStyle = radgrad3;
ctx.fillRect(0,0,150,150);
ctx.fillStyle = radgrad2;
ctx.fillRect(0,0,150,150);
ctx.fillStyle = radgrad;
ctx.fillRect(0,0,150,150);
};
tests['globalAlpha'] = function(ctx){
ctx.globalAlpha = 0.5;
ctx.fillStyle = 'rgba(0,0,0,0.5)';
ctx.strokeRect(0,0,50,50);
ctx.globalAlpha = 0.8;
ctx.fillRect(20,20,20,20);
ctx.fillStyle = 'black';
ctx.globalAlpha = 1;
ctx.fillRect(25,25,10,10);
};
tests['globalAlpha 2'] = function(ctx){
ctx.fillStyle = '#FD0';
ctx.fillRect(0,0,75,75);
ctx.fillStyle = '#6C0';
ctx.fillRect(75,0,75,75);
ctx.fillStyle = '#09F';
ctx.fillRect(0,75,75,75);
ctx.fillStyle = '#F30';
ctx.fillRect(75,75,150,150);
ctx.fillStyle = '#FFF';
ctx.globalAlpha = 0.2;
for (var i=0;i<7;i++){
ctx.beginPath();
ctx.arc(75,75,10+10*i,0,Math.PI*2,true);
ctx.fill();
}
};
tests['fillStyle'] = function(ctx){
for (i=0;i<6;i++){
for (j=0;j<6;j++){
ctx.fillStyle = 'rgb(' + Math.floor(255-42.5*i) + ',' +
Math.floor(255-42.5*j) + ',0)';
ctx.fillRect(j*25,i*25,25,25);
}
}
};
tests['strokeStyle'] = function(ctx){
for (var i=0;i<6;i++){
for (var j=0;j<6;j++){
ctx.strokeStyle = 'rgb(0,' + Math.floor(255-42.5*i) + ',' +
Math.floor(255-42.5*j) + ')';
ctx.beginPath();
ctx.arc(12.5+j*25,12.5+i*25,10,0,Math.PI*2,true);
ctx.stroke();
}
}
};
tests['fill with stroke'] = function(ctx){
ctx.beginPath();
ctx.arc(75,75,50,0,Math.PI*2,true);
ctx.fill();
ctx.closePath();
ctx.beginPath();
ctx.fillStyle = 'red';
ctx.strokeStyle = 'yellow';
ctx.arc(75,75,30,0,Math.PI*2,true);
ctx.fill();
ctx.stroke();
};
tests['floating point coordinates'] = function(ctx){
ctx.lineCap = 'square';
for (var i=0; i<70; i+=3.05) {
ctx.rect(i+3, 10.5, 0, 130);
ctx.moveTo(i+77, 10.5);
ctx.lineTo(i+77, 140.5);
}
ctx.stroke();
}
tests['lineWidth'] = function(ctx){
for (var i = 0; i < 10; i++){
ctx.lineWidth = 1+i;
ctx.beginPath();
ctx.moveTo(5+i*14,5);
ctx.lineTo(5+i*14,140);
ctx.stroke();
}
};
tests['line caps'] = function(ctx){
var lineCap = ['butt','round','square'];
ctx.strokeStyle = '#09f';
ctx.beginPath();
ctx.moveTo(10,10);
ctx.lineTo(140,10);
ctx.moveTo(10,140);
ctx.lineTo(140,140);
ctx.stroke();
ctx.strokeStyle = 'black';
for (var i=0;i<lineCap.length;i++){
ctx.lineWidth = 15;
ctx.lineCap = lineCap[i];
ctx.beginPath();
ctx.moveTo(25+i*50,10);
ctx.lineTo(25+i*50,140);
ctx.stroke();
}
};
tests['line join'] = function(ctx){
var lineJoin = ['round','bevel','miter'];
ctx.lineWidth = 10;
for (var i=0;i<lineJoin.length;i++){
ctx.lineJoin = lineJoin[i];
ctx.beginPath();
ctx.moveTo(-5,5+i*40);
ctx.lineTo(35,45+i*40);
ctx.lineTo(75,5+i*40);
ctx.lineTo(115,45+i*40);
ctx.lineTo(155,5+i*40);
ctx.stroke();
}
};
tests['lineCap default'] = function(ctx){
ctx.beginPath();
ctx.lineWidth = 10.0;
ctx.moveTo(50, 50);
ctx.lineTo(50, 100);
ctx.lineTo(80, 120);
ctx.stroke();
};
tests['lineCap'] = function(ctx){
ctx.beginPath();
ctx.lineWidth = 10.0;
ctx.lineCap = 'round';
ctx.moveTo(50, 50);
ctx.lineTo(50, 100);
ctx.lineTo(80, 120);
ctx.stroke();
};
tests['lineJoin'] = function(ctx){
ctx.beginPath();
ctx.lineWidth = 10.0;
ctx.lineJoin = 'round';
ctx.moveTo(50, 50);
ctx.lineTo(50, 100);
ctx.lineTo(80, 120);
ctx.stroke();
};
tests['states'] = function(ctx){
ctx.save();
ctx.rect(50, 50, 100, 100);
ctx.stroke();
ctx.restore();
ctx.save();
ctx.translate(50,50);
ctx.scale(.5,.5);
ctx.strokeRect(51, 51, 100, 100);
ctx.restore();
ctx.translate(95,95);
ctx.fillRect(0,0,10,10);
};
tests['states with stroke/fill/globalAlpha'] = function(ctx){
ctx.fillRect(0,0,150,150);
ctx.save();
ctx.fillStyle = '#09F'
ctx.fillRect(15,15,120,120);
ctx.save();
ctx.fillStyle = '#FFF'
ctx.globalAlpha = 0.5;
ctx.fillRect(30,30,90,90);
ctx.restore();
ctx.fillRect(45,45,60,60);
ctx.restore();
ctx.fillRect(60,60,30,30);
};
tests['path through fillRect/strokeRect/clearRect'] = function(ctx){
// left: fillRect()
ctx.beginPath();
ctx.rect(0, 50, 50, 50);
ctx.fillStyle = '#F00';
ctx.fillRect(10, 60, 30, 30);
ctx.fillStyle = '#0F0';
ctx.fill();
// center: strokeRect()
ctx.beginPath();
ctx.rect(50, 50, 50, 50);
ctx.strokeStyle = '#F00';
ctx.lineWidth = 5;
ctx.strokeRect(60, 60, 30, 30);
ctx.fillStyle = '#0F0';
ctx.fill();
// right: clearRect()
ctx.beginPath();
ctx.rect(100, 50, 50, 50);
ctx.fillStyle = '#0F0';
ctx.fill();
ctx.clearRect(110, 60, 30, 30);
ctx.fill();
}
tests['invalid stroke/fill styles'] = function(ctx){
ctx.fillStyle = 'red';
ctx.strokeStyle = 'yellow';
ctx.rect(50,50,50,50);
ctx.fill();
ctx.stroke();
ctx.beginPath();
ctx.fillStyle = 'asdf';
ctx.strokeStyle = 'asdf';
ctx.rect(100,80,15,15);
ctx.fill();
ctx.stroke();
};
tests['fillText()'] = function(ctx){
ctx.font = '30px Arial';
ctx.rotate(.1);
ctx.lineTo(10,10);
ctx.fillText("Awesome!", 50, 100);
var te = ctx.measureText('Awesome!');
ctx.strokeStyle = 'rgba(0,0,0,0.5)';
ctx.lineTo(50, 102);
ctx.lineTo(50 + te.width, 102);
ctx.stroke();
};
tests['fillText() transformations'] = function(ctx){
ctx.strokeStyle = '#666';
ctx.font = 'bold 12px Helvetica';
ctx.strokeRect(0,0,200,200);
ctx.lineTo(0,100);
ctx.lineTo(200,100);
ctx.stroke();
ctx.beginPath();
ctx.lineTo(100,0);
ctx.lineTo(100,200);
ctx.stroke();
ctx.rotate(0.2);
ctx.fillText("foo", 150, 100);
ctx.font = 'normal 30px Arial';
ctx.fillText("bar", 50, 100);
};
tests['strokeText()'] = function(ctx){
ctx.strokeStyle = '#666';
ctx.strokeRect(0,0,200,200);
ctx.lineTo(0,100);
ctx.lineTo(200,100);
ctx.stroke();
ctx.beginPath();
ctx.lineTo(100,0);
ctx.lineTo(100,200);
ctx.stroke();
ctx.strokeStyle = 'red';
ctx.font = 'normal 50px Arial';
ctx.strokeText("bar", 100, 100);
};
tests['textAlign right'] = function(ctx){
ctx.strokeStyle = '#666';
ctx.strokeRect(0,0,200,200);
ctx.lineTo(0,100);
ctx.lineTo(200,100);
ctx.stroke();
ctx.beginPath();
ctx.lineTo(100,0);
ctx.lineTo(100,200);
ctx.stroke();
ctx.font = 'normal 20px Arial';
ctx.textAlign = 'right';
ctx.fillText("right", 100, 100);
};
tests['textAlign left'] = function(ctx){
ctx.strokeStyle = '#666';
ctx.strokeRect(0,0,200,200);
ctx.lineTo(0,100);
ctx.lineTo(200,100);
ctx.stroke();
ctx.beginPath();
ctx.lineTo(100,0);
ctx.lineTo(100,200);
ctx.stroke();
ctx.font = 'normal 20px Arial';
ctx.textAlign = 'left';
ctx.fillText("left", 100, 100);
};
tests['textAlign center'] = function(ctx){
ctx.strokeStyle = '#666';
ctx.strokeRect(0,0,200,200);
ctx.lineTo(0,100);
ctx.lineTo(200,100);
ctx.stroke();
ctx.beginPath();
ctx.lineTo(100,0);
ctx.lineTo(100,200);
ctx.stroke();
ctx.font = 'normal 20px Arial';
ctx.textAlign = 'center';
ctx.fillText("center", 100, 100);
};
tests['textBaseline alphabetic'] = function(ctx){
ctx.strokeStyle = '#666';
ctx.strokeRect(0,0,200,200);
ctx.lineTo(0,100);
ctx.lineTo(200,100);
ctx.stroke();
ctx.font = 'normal 20px Arial';
ctx.textBaseline = 'alphabetic';
ctx.textAlign = 'center';
ctx.fillText("alphabetic", 100, 100);
};
tests['textBaseline top'] = function(ctx){
ctx.strokeStyle = '#666';
ctx.strokeRect(0,0,200,200);
ctx.lineTo(0,100);
ctx.lineTo(200,100);
ctx.stroke();
ctx.font = 'normal 20px Arial';
ctx.textBaseline = 'top';
ctx.textAlign = 'center';
ctx.fillText("top", 100, 100);
};
tests['textBaseline hanging'] = function(ctx){
ctx.strokeStyle = '#666';
ctx.strokeRect(0,0,200,200);
ctx.lineTo(0,100);
ctx.lineTo(200,100);
ctx.stroke();
ctx.font = 'normal 20px Arial';
ctx.textBaseline = 'hanging';
ctx.textAlign = 'center';
ctx.fillText("hanging", 100, 100);
};
tests['textBaseline middle'] = function(ctx){
ctx.strokeStyle = '#666';
ctx.strokeRect(0,0,200,200);
ctx.lineTo(0,100);
ctx.lineTo(200,100);
ctx.stroke();
ctx.font = 'normal 20px Arial';
ctx.textBaseline = 'middle';
ctx.textAlign = 'center';
ctx.fillText("middle", 100, 100);
};
tests['textBaseline ideographic'] = function(ctx){
ctx.strokeStyle = '#666';
ctx.strokeRect(0,0,200,200);
ctx.lineTo(0,100);
ctx.lineTo(200,100);
ctx.stroke();
ctx.font = 'normal 20px Arial';
ctx.textBaseline = 'ideographic';
ctx.textAlign = 'center';
ctx.fillText("ideographic", 100, 100);
};
tests['textBaseline bottom'] = function(ctx){
ctx.strokeStyle = '#666';
ctx.strokeRect(0,0,200,200);
ctx.lineTo(0,100);
ctx.lineTo(200,100);
ctx.stroke();
ctx.font = 'normal 20px Arial';
ctx.textBaseline = 'bottom';
ctx.textAlign = 'center';
ctx.fillText("bottom", 100, 100);
};
tests['font size px'] = function(ctx){
ctx.strokeStyle = '#666';
ctx.strokeRect(0,0,200,200);
ctx.lineTo(0,100);
ctx.lineTo(200,100);
ctx.stroke();
ctx.font = 'normal 14px Arial';
ctx.textAlign = 'center';
ctx.fillText("normal 14px Arial", 100, 100);
};
tests['font size pt'] = function(ctx){
ctx.strokeStyle = '#666';
ctx.strokeRect(0,0,200,200);
ctx.lineTo(0,100);
ctx.lineTo(200,100);
ctx.stroke();
ctx.font = 'normal 14pt Arial';
ctx.textAlign = 'center';
ctx.fillText("normal 14pt Arial", 100, 100);
};
tests['font size mm'] = function(ctx){
ctx.strokeStyle = '#666';
ctx.strokeRect(0,0,200,200);
ctx.lineTo(0,100);
ctx.lineTo(200,100);
ctx.stroke();
ctx.font = 'normal 3mm Arial';
ctx.textAlign = 'center';
ctx.fillText("normal 3mm Arial", 100, 100);
};
tests['font size cm'] = function(ctx){
ctx.strokeStyle = '#666';
ctx.strokeRect(0,0,200,200);
ctx.lineTo(0,100);
ctx.lineTo(200,100);
ctx.stroke();
ctx.font = 'normal 0.6cm Arial';
ctx.textAlign = 'center';
ctx.fillText("normal 0.6cm Arial", 100, 100);
};
tests['font weight bold'] = function(ctx){
ctx.strokeStyle = '#666';
ctx.strokeRect(0,0,200,200);
ctx.lineTo(0,100);
ctx.lineTo(200,100);
ctx.stroke();
ctx.font = 'bold 14px Arial';
ctx.textAlign = 'center';
ctx.fillText("bold 14px Arial", 100, 100);
};
tests['font weight lighter'] = function(ctx){
ctx.strokeStyle = '#666';
ctx.strokeRect(0,0,200,200);
ctx.lineTo(0,100);
ctx.lineTo(200,100);
ctx.stroke();
ctx.font = 'lighter 14px Arial';
ctx.textAlign = 'center';
ctx.fillText("lighter 14px Arial", 100, 100);
};
tests['font weight lighter italic'] = function(ctx){
ctx.strokeStyle = '#666';
ctx.strokeRect(0,0,200,200);
ctx.lineTo(0,100);
ctx.lineTo(200,100);
ctx.stroke();
ctx.font = 'lighter italic 14px Arial';
ctx.textAlign = 'center';
ctx.fillText("lighter italic 14px Arial", 100, 100);
};
tests['font weight 200'] = function(ctx){
ctx.strokeStyle = '#666';
ctx.strokeRect(0,0,200,200);
ctx.lineTo(0,100);
ctx.lineTo(200,100);
ctx.stroke();
ctx.font = '200 14px Arial';
ctx.textAlign = 'center';
ctx.fillText("200 14px Arial", 100, 100);
};
tests['font weight 800'] = function(ctx){
ctx.strokeStyle = '#666';
ctx.strokeRect(0,0,200,200);
ctx.lineTo(0,100);
ctx.lineTo(200,100);
ctx.stroke();
ctx.font = '800 14px Arial';
ctx.textAlign = 'center';
ctx.fillText("800 14px Arial", 100, 100);
};
tests['font family serif'] = function(ctx){
ctx.strokeStyle = '#666';
ctx.strokeRect(0,0,200,200);
ctx.lineTo(0,100);
ctx.lineTo(200,100);
ctx.stroke();
ctx.font = '14px serif';
ctx.textAlign = 'center';
ctx.fillText("14px serif", 100, 100);
};
tests['font family sans-serif'] = function(ctx){
ctx.strokeStyle = '#666';
ctx.strokeRect(0,0,200,200);
ctx.lineTo(0,100);
ctx.lineTo(200,100);
ctx.stroke();
ctx.font = '14px sans-serif';
ctx.textAlign = 'center';
ctx.fillText("14px sans-serif", 100, 100);
};
tests['font family Impact'] = function(ctx){
ctx.strokeStyle = '#666';
ctx.strokeRect(0,0,200,200);
ctx.lineTo(0,100);
ctx.lineTo(200,100);
ctx.stroke();
ctx.font = '18px Impact';
ctx.textAlign = 'center';
ctx.fillText("18px Impact", 100, 100);
};
tests['font family invalid'] = function(ctx){
ctx.strokeStyle = '#666';
ctx.strokeRect(0,0,200,200);
ctx.lineTo(0,100);
ctx.lineTo(200,100);
ctx.stroke();
ctx.font = '14px Foo, Invalid, Impact, sans-serif';
ctx.textAlign = 'center';
ctx.fillText("14px Invalid, Impact", 100, 100);
};
tests['globalCompositeOperation source-over'] = function(ctx){
ctx.fillStyle = 'blue';
ctx.fillRect(0,0,100,100);
ctx.globalCompositeOperation = 'source-over';
ctx.fillStyle = 'red';
ctx.arc(80,80,50,0,Math.PI * 2,false);
ctx.fill();
};
tests['globalCompositeOperation source-in'] = function(ctx){