// Simple implementation of SVG sizing
setup({explicit_done: true});
var SVGSizing = (function() {
function parseLength(l) {
var match = /^([-+]?[0-9]+|[-+]?[0-9]*\.[0-9]+)(px|%)?$/.exec(l);
if (!match)
return null;
return new Length(Number(match[1]), match[2] ? match[2] : "px");
}
function parseViewBox(input) {
if (!input)
return null;
var arr = input.split(' ');
return arr.map(function(a) { return parseInt(a); });
}
// Only px and % are used
function convertToPx(input, percentRef) {
if (input == null)
return null;
var length = parseLength(input);
if (length.amount == 0)
return 0;
if (!length.unit)
length.unit = "px";
if (length.unit == "%" && percentRef === undefined)
return null;
return length.amount * { px: 1,
"%": percentRef/100}[length.unit];
}
function Length(amount, unit) {
this.amount = amount;
this.unit = unit;
}
function describe(data) {
function dumpObject(obj) {
var r = "";
for (var property in obj) {
if (obj.hasOwnProperty(property)) {
var value = obj[property];
if (typeof value == 'string')
value = "'" + value + "'";
else if (value == null)
value = "null";
else if (typeof value == 'object')
{
if (value instanceof Array)
value = "[" + value + "]";
else
value = "{" + dumpObject(value) + "}";
}
if (value != "null")
r += property + ": " + value + ", ";
}
}
return r;
}
var result = dumpObject(data);
if (result == "")
return "(initial values)";
return result;
}
function mapPresentationalHintLength(testData, cssProperty, attr) {
if (attr) {
var l = parseLength(attr);
if (l)
testData.style[cssProperty] = l.amount + l.unit;
}
}
function computedWidthIsAuto(testData) {
return !testData.style["width"] || testData.style["width"] == 'auto';
}
function computedHeightIsAuto(testData) {
return !testData.style["height"] || testData.style["height"] == 'auto' ||
(parseLength(testData.style["height"]).unit == '%' &&
containerComputedHeightIsAuto(testData));
}
function containerComputedWidthIsAuto(testData) {
return !testData.config.containerWidthStyle ||
testData.config.containerWidthStyle == 'auto';
}
function containerComputedHeightIsAuto(testData) {
return !testData.config.containerHeightStyle ||
testData.config.containerHeightStyle == 'auto';
}
function intrinsicInformation(testData) {
if (testData.config.placeholder == 'iframe')
return {};
var w = convertToPx(testData.config.svgWidthAttr) || 0;
var h = convertToPx(testData.config.svgHeightAttr) || 0;
var r = 0;
if (w && h) {
r = w / h;
} else {
var vb = parseViewBox(testData.config.svgViewBoxAttr);
if (vb) {
r = vb[2] / vb[3];
}
if (r) {
if (!w && h)
w = h * r;
else if (!h && w)
h = w / r;
}
}
return { width: w, height: h, ratio: r };
};
function contentAttributeForPlaceholder(testData) {
if (testData.config.placeholder == 'object')
return "data";
else
return "src";
}
function TestData(config) {
this.config = config;
this.name = describe(config);
this.style = {};
if (config.placeholder) {
mapPresentationalHintLength(this, "width", config.placeholderWidthAttr);
mapPresentationalHintLength(this, "height", config.placeholderHeightAttr);
} else {
if (config.svgWidthStyle)
this.style["width"] = config.svgWidthStyle;
else
mapPresentationalHintLength(this, "width", config.svgWidthAttr);
if (config.svgHeightStyle)
this.style["height"] = config.svgHeightStyle;
else
mapPresentationalHintLength(this, "height", config.svgHeightAttr);
}
}
TestData.prototype.computeInlineReplacedSize = function(outerWidth, outerHeight) {
var intrinsic = intrinsicInformation(this);
var self = this;
// http://www.w3.org/TR/CSS2/visudet.html#inline-replaced-height
function calculateUsedHeight() {
if (computedHeightIsAuto(self)) {
if (computedWidthIsAuto(self) && intrinsic.height)
return intrinsic.height;
if (intrinsic.ratio)
return calculateUsedWidth() / intrinsic.ratio;
if (intrinsic.height)
return intrinsic.height;
return 150;
}
return convertToPx(self.style["height"],
convertToPx(self.config.containerHeightStyle,
outerHeight));
}
// http://www.w3.org/TR/CSS2/visudet.html#inline-replaced-width
function calculateUsedWidth() {
if (computedWidthIsAuto(self)) {
if (computedHeightIsAuto(self) && intrinsic.width)
return intrinsic.width;
if (!computedHeightIsAuto(self) && intrinsic.ratio)
return calculateUsedHeight() * intrinsic.ratio;
if (computedHeightIsAuto(self) && intrinsic.ratio) {
if (containerComputedWidthIsAuto(self)) {
// Note: While this is actually undefined in CSS
// 2.1, use the suggested value by examining the
// ancestor widths.
return outerWidth;
} else {
return convertToPx(self.config.containerWidthStyle,
outerWidth);
}
}
if (intrinsic.width)
return intrinsic.width;
return 300;
}
if (containerComputedWidthIsAuto(self))
return convertToPx(self.style["width"], outerWidth);
else
return convertToPx(self.style["width"],
convertToPx(self.config.containerWidthStyle,
outerWidth));
}
return { width: calculateUsedWidth(),
height: calculateUsedHeight() };
};
TestData.prototype.buildContainer = function (placeholder, options) {
options = options || {};
var container = document.createElement("div");
container.id = "container";
if (this.config.containerWidthStyle)
container.style.width = this.config.containerWidthStyle;
if (this.config.containerHeightStyle)
container.style.height = this.config.containerHeightStyle;
if (options.pretty)
container.appendChild(document.createTextNode("\n\t\t"));
container.appendChild(placeholder);
if (options.pretty)
container.appendChild(document.createTextNode("\n\t"));
return container;
};
TestData.prototype.buildSVGOrPlaceholder = function (options) {
options = options || {};
var self = this;
if (this.config.placeholder) {
var generateSVGURI = function(testData, encoder) {
var res = '<svg xmlns="http://www.w3.org/2000/svg"';
function addAttr(attr, prop) {
if (testData.config[prop])
res += ' ' + attr + '="' + testData.config[prop] + '"';
}
addAttr("width", "svgWidthAttr");
addAttr("height", "svgHeightAttr");
addAttr("viewBox", "svgViewBoxAttr");
res += '></svg>';
return 'data:image/svg+xml' + encoder(res);
};
var placeholder = document.createElement(this.config.placeholder);
if (options.pretty) {
placeholder.appendChild(document.createTextNode("\n\t\t\t"));
placeholder.appendChild(
document.createComment(
generateSVGURI(this, function(x) { return "," + x; })));
placeholder.appendChild(document.createTextNode("\n\t\t"));
}
placeholder.setAttribute("id", "test");
if (this.config.placeholderWidthAttr)
placeholder.setAttribute("width", this.config.placeholderWidthAttr);
if (this.config.placeholderHeightAttr)
placeholder.setAttribute("height", this.config.placeholderHeightAttr);
placeholder.setAttribute(contentAttributeForPlaceholder(this),
generateSVGURI(this, function(x) {
return ";base64," + btoa(x);
}));
return placeholder;
} else {
var svgElement = document.createElementNS("http://www.w3.org/2000/svg", "svg");
svgElement.setAttribute("id", "test");
if (self.config.svgWidthStyle)
svgElement.style.width = self.config.svgWidthStyle;
if (self.config.svgHeightStyle)
svgElement.style.height = self.config.svgHeightStyle;
if (self.config.svgWidthAttr)
svgElement.setAttribute("width", self.config.svgWidthAttr);
if (self.config.svgHeightAttr)
svgElement.setAttribute("height", self.config.svgHeightAttr);
if (self.config.svgViewBoxAttr)
svgElement.setAttribute("viewBox", self.config.svgViewBoxAttr);
return svgElement;
}
};
TestData.prototype.buildDemo = function (expectedRect, id) {
// Non-essential debugging tool
var self = this;
function buildDemoSerialization() {
var outerWidth = 800;
var outerHeight = 600;
var options = { pretty: true };
var container =
self.buildContainer(self.buildSVGOrPlaceholder(options), options);
var root = document.createElement("html");
var style = document.createElement("style");
style.textContent = "\n" +
"\tbody { margin: 0; font-family: sans-serif }\n" +
"\tiframe { border: none }\n" +
"\t#expected {\n" +
"\t\twidth: " + (expectedRect.width) + "px; height: "
+ (expectedRect.height) + "px;\n" +
"\t\tborder: 10px solid lime; position: absolute;\n" +
"\t\tbackground-color: red }\n" +
"\t#testContainer { position: absolute;\n" +
"\t\ttop: 10px; left: 10px; width: " + outerWidth + "px;\n" +
"\t\theight: " + outerHeight + "px }\n" +
"\t#test { background-color: green }\n" +
"\t.result { position: absolute; top: 0; right: 0;\n" +
"\t\tbackground-color: hsla(0,0%, 0%, 0.85); border-radius: 0.5em;\n" +
"\t\tpadding: 0.5em; border: 0.25em solid black }\n" +
"\t.pass { color: lime }\n" +
"\t.fail { color: red }\n";
root.appendChild(document.createTextNode("\n"));
root.appendChild(style);
root.appendChild(document.createTextNode("\n"));
var script = document.createElement("script");
script.textContent = "\n" +
"onload = function() {\n" +
"\tvar svgRect =\n" +
"\t\tdocument.querySelector('#test').getBoundingClientRect();\n" +
"\tpassed = (svgRect.width == " + expectedRect.width + " && " +
"svgRect.height == " + expectedRect.height + ");\n" +
"\tdocument.body.insertAdjacentHTML('beforeEnd',\n" +
"\t\t'<span class=\"result '+ (passed ? 'pass' : 'fail') " +
"+ '\">' + (passed ? 'Pass' : 'Fail') + '</span>');\n" +
"};\n";
root.appendChild(script);
root.appendChild(document.createTextNode("\n"));
var expectedElement = document.createElement("div");
expectedElement.id = "expected";
root.appendChild(expectedElement);
root.appendChild(document.createTextNode("\n"));
var testContainer = document.createElement("div");
testContainer.id = "testContainer";
testContainer.appendChild(document.createTextNode("\n\t"));
testContainer.appendChild(container);
testContainer.appendChild(document.createTextNode("\n"));
root.appendChild(testContainer);
root.appendChild(document.createTextNode("\n"));
return "<!DOCTYPE html>\n" + root.outerHTML;
}
function pad(n, width, z) {
z = z || '0';
n = n + '';
return n.length >= width ? n : new Array(width - n.length + 1).join(z) + n;
}
function heightToDescription(height) {
if (!height || height == "auto")
return "auto";
if (parseLength(height).unit == '%')
return "percentage";
return "fixed";
}
var demoRoot = document.querySelector('#demo');
if (demoRoot) {
var demo = buildDemoSerialization();
var iframe = document.createElement('iframe');
iframe.style.width = (Math.max(900, expectedRect.width)) + "px";
iframe.style.height = (Math.max(400, expectedRect.height)) + "px";
iframe.src = "data:text/html;charset=utf-8," + encodeURIComponent(demo);
demoRoot.appendChild(iframe);
demoRoot.insertAdjacentHTML(
'beforeEnd',
'<p><a href="data:application/octet-stream;charset=utf-8;base64,' +
btoa(demo) + '" download="svg-in-' + this.config.placeholder + "-" +
heightToDescription(this.config.placeholderHeightAttr) + "-" + pad(id, 3) +
'.html">Download</a></p>');
}
};
return {
TestData: TestData,
doCombinationTest: function(values, func, testSingleId) {
function computeConfig(id) {
id--;
var multiplier = 1;
var config = {};
for (var i=0; i<values.length; i++) {
// Compute offset into current array
var ii = (Math.floor(id / multiplier)) % values[i][1].length;
// Set corresponding value
config[values[i][0]] = values[i][1][ii];
// Compute new multiplier
multiplier *= values[i][1].length;
}
if (id >= multiplier)
return null;
return config;
}
function cont(id) {
var config = computeConfig(id);
if (config && (!testSingleId || testSingleId == id)) {
var next = function() {func(config, id, cont)};
// Make sure we don't blow the stack, without too much slowness
if (id % 20 === 0) {
step_timeout(next, 0);
} else {
next();
}
} else {
done();
}
};
if (testSingleId)
cont(testSingleId);
else
cont(1);
}
};
})();
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