svgedit/test/svgutils_bbox_test.html

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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>Unit Tests for svgutils.js BBox functions</title>
<link rel='stylesheet' href='qunit/qunit.css' type='text/css'/>
<script src='../editor/jquery.js'></script>
<script src='../editor/svgedit.js'></script>
<!-- svgutils.js depends on these three... mock out? -->
<script src='../editor/pathseg.js'></script>
<script src='../editor/browser.js'></script>
<script src='../editor/math.js'></script>
<script src='../editor/svgtransformlist.js'></script>
<script src='../editor/jquery-svg.js'></script> <!-- has $.attr() that takes an array . Used by svgedit.utilities.getPathDFromElement -->
<script src='../editor/path.js'></script>
<script src='../editor/svgutils.js'></script>
<script src='qunit/qunit.js'></script>
<script src='qunit/qunit-assert-close.js'></script>
<script>
$(function() {
// log function
QUnit.log = function(details) {
if (window.console && window.console.log) {
window.console.log(details.result +' :: '+ details.message);
}
};
function mockCreateSVGElement(jsonMap) {
var elem = document.createElementNS(svgedit.NS.SVG, jsonMap['element']);
for (var attr in jsonMap['attr']) {
elem.setAttribute(attr, jsonMap['attr'][attr]);
}
return elem;
}
var mockAddSvgElementFromJsonCallCount = 0;
function mockAddSvgElementFromJson( json) {
var elem = mockCreateSVGElement( json)
svgroot.appendChild( elem)
mockAddSvgElementFromJsonCallCount++;
return elem
}
var mockPathActions = {
resetOrientation: function(path) {
if (path == null || path.nodeName != 'path') {return false;}
var tlist = svgedit.transformlist.getTransformList(path);
var m = svgedit.math.transformListToTransform(tlist).matrix;
tlist.clear();
path.removeAttribute('transform');
var segList = path.pathSegList;
var len = segList.numberOfItems;
var i, last_x, last_y;
for (i = 0; i < len; ++i) {
var seg = segList.getItem(i);
var type = seg.pathSegType;
if (type == 1) {continue;}
var pts = [];
$.each(['',1,2], function(j, n) {
var x = seg['x'+n], y = seg['y'+n];
if (x !== undefined && y !== undefined) {
var pt = svgedit.math.transformPoint(x, y, m);
pts.splice(pts.length, 0, pt.x, pt.y);
}
});
svgedit.path.replacePathSeg(type, i, pts, path);
}
//svgedit.utilities.reorientGrads(path, m);
}
}
var EPSILON = 0.001
var svg = document.createElementNS(svgedit.NS.SVG, 'svg');
var sandbox = document.getElementById('sandbox');
var svgroot = mockCreateSVGElement({
'element': 'svg',
'attr': {'id': 'svgroot'}
});
sandbox.appendChild(svgroot);
module('svgedit.utilities_bbox', {
setup: function() {
// We're reusing ID's so we need to do this for transforms.
svgedit.transformlist.resetListMap();
svgedit.path.init(null);
mockAddSvgElementFromJsonCallCount = 0;
},
teardown: function() {
}
});
test('Test svgedit.utilities package', function() {
ok(svgedit.utilities);
ok(svgedit.utilities.getBBoxWithTransform);
ok(svgedit.utilities.getStrokedBBox);
ok(svgedit.utilities.getRotationAngleFromTransformList);
ok(svgedit.utilities.getRotationAngle);
});
test("Test getBBoxWithTransform and no transform", function() {
var getBBoxWithTransform = svgedit.utilities.getBBoxWithTransform
var bbox;
var elem = mockCreateSVGElement({
'element': 'path',
'attr': { 'id': 'path', 'd': 'M0,1 L2,3'}
});
svgroot.appendChild( elem)
bbox = getBBoxWithTransform(elem, mockAddSvgElementFromJson, mockPathActions)
deepEqual(bbox, {"x": 0, "y": 1, "width": 2, "height": 2 });
equal( mockAddSvgElementFromJsonCallCount, 0);
svgroot.removeChild( elem);
elem = mockCreateSVGElement({
'element': 'rect',
'attr': { 'id': 'rect', 'x': '0', 'y': '1', 'width': '5', 'height': '10'}
});
svgroot.appendChild( elem);
bbox = getBBoxWithTransform( elem, mockAddSvgElementFromJson, mockPathActions)
deepEqual( bbox, { "x": 0, "y": 1, "width": 5, "height": 10});
equal( mockAddSvgElementFromJsonCallCount, 0);
svgroot.removeChild( elem);
elem = mockCreateSVGElement({
'element': 'line',
'attr': { 'id': 'line', 'x1': '0', 'y1': '1', 'x2': '5', 'y2': '6'}
});
svgroot.appendChild( elem);
bbox = getBBoxWithTransform( elem, mockAddSvgElementFromJson, mockPathActions)
deepEqual( bbox, { "x": 0, "y": 1, "width": 5, "height": 5});
equal( mockAddSvgElementFromJsonCallCount, 0);
svgroot.removeChild( elem);
elem = mockCreateSVGElement({
'element': 'rect',
'attr': { 'id': 'rect', 'x': '0', 'y': '1', 'width': '5', 'height': '10'}
});
var g = mockCreateSVGElement({
'element': 'g',
'attr': {}
});
g.appendChild( elem);
svgroot.appendChild( g);
bbox = getBBoxWithTransform( elem, mockAddSvgElementFromJson, mockPathActions)
deepEqual( bbox, { "x": 0, "y": 1, "width": 5, "height": 10});
equal( mockAddSvgElementFromJsonCallCount, 0);
svgroot.removeChild( g);
});
test("Test getBBoxWithTransform and a rotation transform", function() {
var getBBoxWithTransform = svgedit.utilities.getBBoxWithTransform
var bbox;
var elem = mockCreateSVGElement({
'element': 'path',
'attr': { 'id': 'path', 'd': 'M10,10 L20,20', 'transform': 'rotate(45 10,10)'}
});
svgroot.appendChild( elem)
bbox = getBBoxWithTransform(elem, mockAddSvgElementFromJson, mockPathActions);
close( bbox.x, 10, EPSILON);
close( bbox.y, 10, EPSILON);
close( bbox.width, 0, EPSILON);
close( bbox.height, Math.sqrt(100 + 100), EPSILON);
svgroot.removeChild( elem);
elem = mockCreateSVGElement({
'element': 'rect',
'attr': { 'id': 'rect', 'x': '10', 'y': '10', 'width': '10', 'height': '20', 'transform': 'rotate(90 15,20)'}
});
svgroot.appendChild( elem);
bbox = getBBoxWithTransform( elem, mockAddSvgElementFromJson, mockPathActions);
close( bbox.x, 5, EPSILON);
close( bbox.y, 15, EPSILON);
close( bbox.width, 20, EPSILON);
close( bbox.height, 10, EPSILON);
equal( mockAddSvgElementFromJsonCallCount, 1);
svgroot.removeChild( elem);
var rect = {x: 10, y: 10, width: 10, height: 20};
var angle = 45;
var origin = { x: 15, y: 20};
elem = mockCreateSVGElement({
'element': 'rect',
'attr': { 'id': 'rect2', 'x': rect.x, 'y': rect.y, 'width': rect.width, 'height': rect.height, 'transform': 'rotate(' + angle + ' ' + origin.x + ',' + origin.y + ')'}
});
svgroot.appendChild( elem);
mockAddSvgElementFromJsonCallCount = 0;
bbox = getBBoxWithTransform( elem, mockAddSvgElementFromJson, mockPathActions);
var r2 = rotateRect( rect, angle, origin);
close( bbox.x, r2.x, EPSILON, 'rect2 x is ' + r2.x);
close( bbox.y, r2.y, EPSILON, 'rect2 y is ' + r2.y);
close( bbox.width, r2.width, EPSILON, 'rect2 width is' + r2.width);
close( bbox.height, r2.height, EPSILON, 'rect2 height is ' + r2.height);
equal( mockAddSvgElementFromJsonCallCount, 0);
svgroot.removeChild( elem);
// Same as previous but wrapped with g and the transform is with the g.
elem = mockCreateSVGElement({
'element': 'rect',
'attr': { 'id': 'rect3', 'x': rect.x, 'y': rect.y, 'width': rect.width, 'height': rect.height}
});
var g = mockCreateSVGElement({
'element': 'g',
'attr': {'transform': 'rotate(' + angle + ' ' + origin.x + ',' + origin.y + ')'}
});
g.appendChild( elem);
svgroot.appendChild( g);
mockAddSvgElementFromJsonCallCount = 0;
bbox = getBBoxWithTransform( g, mockAddSvgElementFromJson, mockPathActions);
close( bbox.x, r2.x, EPSILON, 'rect2 x is ' + r2.x);
close( bbox.y, r2.y, EPSILON, 'rect2 y is ' + r2.y);
close( bbox.width, r2.width, EPSILON, 'rect2 width is' + r2.width);
close( bbox.height, r2.height, EPSILON, 'rect2 height is ' + r2.height);
equal( mockAddSvgElementFromJsonCallCount, 0);
svgroot.removeChild( g);
elem = mockCreateSVGElement({
'element': 'ellipse',
'attr': { 'id': 'ellipse1', 'cx': '100', 'cy': '100', 'rx': '50', 'ry': '50', 'transform': 'rotate(45 100,100)'}
});
svgroot.appendChild( elem);
mockAddSvgElementFromJsonCallCount = 0;
bbox = getBBoxWithTransform( elem, mockAddSvgElementFromJson, mockPathActions);
// TODO: the BBox algorithm is using the bezier control points to calculate the bounding box. Should be 50, 50, 100, 100.
ok( bbox.x > 45 && bbox.x <= 50);
ok( bbox.y > 45 && bbox.y <= 50);
ok( bbox.width >= 100 && bbox.width < 110);
ok( bbox.height >= 100 && bbox.height < 110);
equal( mockAddSvgElementFromJsonCallCount, 1);
svgroot.removeChild( elem);
});
test("Test getBBoxWithTransform with rotation and matrix transforms", function() {
var getBBoxWithTransform = svgedit.utilities.getBBoxWithTransform
var bbox;
var tx = 10; // tx right
var ty = 10; // tx down
var txInRotatedSpace = Math.sqrt(tx*tx + ty*ty); // translate in rotated 45 space.
var tyInRotatedSpace = 0;
var matrix = 'matrix(1,0,0,1,' + txInRotatedSpace + ',' + tyInRotatedSpace + ')'
var elem = mockCreateSVGElement({
'element': 'path',
'attr': { 'id': 'path', 'd': 'M10,10 L20,20', 'transform': 'rotate(45 10,10) ' + matrix}
});
svgroot.appendChild( elem)
bbox = getBBoxWithTransform(elem, mockAddSvgElementFromJson, mockPathActions)
close( bbox.x, 10 + tx, EPSILON);
close( bbox.y, 10 + ty, EPSILON);
close( bbox.width, 0, EPSILON)
close( bbox.height, Math.sqrt(100 + 100), EPSILON)
svgroot.removeChild( elem);
txInRotatedSpace = tx; // translate in rotated 90 space.
tyInRotatedSpace = -ty;
matrix = 'matrix(1,0,0,1,' + txInRotatedSpace + ',' + tyInRotatedSpace + ')'
elem = mockCreateSVGElement({
'element': 'rect',
'attr': { 'id': 'rect', 'x': '10', 'y': '10', 'width': '10', 'height': '20', 'transform': 'rotate(90 15,20) ' + matrix}
});
svgroot.appendChild( elem);
bbox = getBBoxWithTransform( elem, mockAddSvgElementFromJson, mockPathActions)
close( bbox.x, 5 + tx, EPSILON);
close( bbox.y, 15 + ty, EPSILON);
close( bbox.width, 20, EPSILON);
close( bbox.height, 10, EPSILON);
svgroot.removeChild( elem);
var rect = {x: 10, y: 10, width: 10, height: 20}
var angle = 45
var origin = { x: 15, y: 20}
tx = 10; // tx right
ty = 10; // tx down
txInRotatedSpace = Math.sqrt(tx*tx + ty*ty); // translate in rotated 45 space.
tyInRotatedSpace = 0;
matrix = 'matrix(1,0,0,1,' + txInRotatedSpace + ',' + tyInRotatedSpace + ')'
elem = mockCreateSVGElement({
'element': 'rect',
'attr': { 'id': 'rect2', 'x': rect.x, 'y': rect.y, 'width': rect.width, 'height': rect.height, 'transform': 'rotate(' + angle + ' ' + origin.x + ',' + origin.y + ') ' + matrix}
});
svgroot.appendChild( elem);
bbox = getBBoxWithTransform( elem, mockAddSvgElementFromJson, mockPathActions)
var r2 = rotateRect( rect, angle, origin)
close( bbox.x, r2.x + tx, EPSILON, 'rect2 x is ' + r2.x);
close( bbox.y, r2.y + ty, EPSILON, 'rect2 y is ' + r2.y);
close( bbox.width, r2.width, EPSILON, 'rect2 width is' + r2.width);
close( bbox.height, r2.height, EPSILON, 'rect2 height is ' + r2.height);
svgroot.removeChild( elem);
// Same as previous but wrapped with g and the transform is with the g.
elem = mockCreateSVGElement({
'element': 'rect',
'attr': { 'id': 'rect3', 'x': rect.x, 'y': rect.y, 'width': rect.width, 'height': rect.height}
});
var g = mockCreateSVGElement({
'element': 'g',
'attr': {'transform': 'rotate(' + angle + ' ' + origin.x + ',' + origin.y + ') ' + matrix}
});
g.appendChild( elem);
svgroot.appendChild( g);
bbox = getBBoxWithTransform( g, mockAddSvgElementFromJson, mockPathActions)
close( bbox.x, r2.x + tx, EPSILON, 'rect2 x is ' + r2.x);
close( bbox.y, r2.y + ty, EPSILON, 'rect2 y is ' + r2.y);
close( bbox.width, r2.width, EPSILON, 'rect2 width is' + r2.width);
close( bbox.height, r2.height, EPSILON, 'rect2 height is ' + r2.height);
svgroot.removeChild( g);
elem = mockCreateSVGElement({
'element': 'ellipse',
'attr': { 'id': 'ellipse1', 'cx': '100', 'cy': '100', 'rx': '50', 'ry': '50', 'transform': 'rotate(45 100,100) ' + matrix}
});
svgroot.appendChild( elem);
bbox = getBBoxWithTransform( elem, mockAddSvgElementFromJson, mockPathActions)
// TODO: the BBox algorithm is using the bezier control points to calculate the bounding box. Should be 50, 50, 100, 100.
ok( bbox.x > 45 + tx && bbox.x <= 50 + tx);
ok( bbox.y > 45 + ty && bbox.y <= 50 + ty);
ok( bbox.width >= 100 && bbox.width < 110);
ok( bbox.height >= 100 && bbox.height < 110);
svgroot.removeChild( elem);
});
test("Test getStrokedBBox with stroke-width 10", function() {
var getStrokedBBox = svgedit.utilities.getStrokedBBox
var bbox;
var strokeWidth = 10
var elem = mockCreateSVGElement({
'element': 'path',
'attr': { 'id': 'path', 'd': 'M0,1 L2,3', 'stroke-width': strokeWidth}
});
svgroot.appendChild( elem)
bbox = getStrokedBBox( [elem], mockAddSvgElementFromJson, mockPathActions)
deepEqual(bbox, {"x": 0 - strokeWidth / 2, "y": 1 - strokeWidth / 2, "width": 2 + strokeWidth, "height": 2 + strokeWidth});
svgroot.removeChild( elem);
elem = mockCreateSVGElement({
'element': 'rect',
'attr': { 'id': 'rect', 'x': '0', 'y': '1', 'width': '5', 'height': '10', 'stroke-width': strokeWidth}
});
svgroot.appendChild( elem);
bbox = getStrokedBBox( [elem], mockAddSvgElementFromJson, mockPathActions)
deepEqual( bbox, { "x": 0 - strokeWidth / 2, "y": 1 - strokeWidth / 2, "width": 5 + strokeWidth, "height": 10 + strokeWidth});
svgroot.removeChild( elem);
elem = mockCreateSVGElement({
'element': 'line',
'attr': { 'id': 'line', 'x1': '0', 'y1': '1', 'x2': '5', 'y2': '6', 'stroke-width': strokeWidth}
});
svgroot.appendChild( elem);
bbox = getStrokedBBox( [elem], mockAddSvgElementFromJson, mockPathActions)
deepEqual( bbox, { "x": 0 - strokeWidth / 2, "y": 1 - strokeWidth / 2, "width": 5 + strokeWidth, "height": 5 + strokeWidth});
svgroot.removeChild( elem);
elem = mockCreateSVGElement({
'element': 'rect',
'attr': { 'id': 'rect', 'x': '0', 'y': '1', 'width': '5', 'height': '10', 'stroke-width': strokeWidth}
});
var g = mockCreateSVGElement({
'element': 'g',
'attr': {}
});
g.appendChild( elem);
svgroot.appendChild( g);
bbox = getStrokedBBox( [elem], mockAddSvgElementFromJson, mockPathActions)
deepEqual( bbox, { "x": 0 - strokeWidth / 2, "y": 1 - strokeWidth / 2, "width": 5 + strokeWidth, "height": 10 + strokeWidth});
svgroot.removeChild( g);
});
test("Test getStrokedBBox with stroke-width 'none'", function() {
var getStrokedBBox = svgedit.utilities.getStrokedBBox
var bbox;
var elem = mockCreateSVGElement({
'element': 'path',
'attr': { 'id': 'path', 'd': 'M0,1 L2,3', 'stroke-width': 'none'}
});
svgroot.appendChild( elem)
bbox = getStrokedBBox( [elem], mockAddSvgElementFromJson, mockPathActions)
deepEqual(bbox, {"x": 0, "y": 1, "width": 2, "height": 2});
svgroot.removeChild( elem);
elem = mockCreateSVGElement({
'element': 'rect',
'attr': { 'id': 'rect', 'x': '0', 'y': '1', 'width': '5', 'height': '10', 'stroke-width': 'none'}
});
svgroot.appendChild( elem);
bbox = getStrokedBBox( [elem], mockAddSvgElementFromJson, mockPathActions)
deepEqual( bbox, { "x": 0, "y": 1, "width": 5, "height": 10});
svgroot.removeChild( elem);
elem = mockCreateSVGElement({
'element': 'line',
'attr': { 'id': 'line', 'x1': '0', 'y1': '1', 'x2': '5', 'y2': '6', 'stroke-width': 'none'}
});
svgroot.appendChild( elem);
bbox = getStrokedBBox( [elem], mockAddSvgElementFromJson, mockPathActions)
deepEqual( bbox, { "x": 0, "y": 1, "width": 5, "height": 5});
svgroot.removeChild( elem);
elem = mockCreateSVGElement({
'element': 'rect',
'attr': { 'id': 'rect', 'x': '0', 'y': '1', 'width': '5', 'height': '10', 'stroke-width': 'none'}
});
var g = mockCreateSVGElement({
'element': 'g',
'attr': {}
});
g.appendChild( elem);
svgroot.appendChild( g);
bbox = getStrokedBBox( [elem], mockAddSvgElementFromJson, mockPathActions)
deepEqual( bbox, { "x": 0, "y": 1, "width": 5, "height": 10});
svgroot.removeChild( g);
});
test("Test getStrokedBBox with no stroke-width attribute", function() {
var getStrokedBBox = svgedit.utilities.getStrokedBBox
var bbox;
var elem = mockCreateSVGElement({
'element': 'path',
'attr': { 'id': 'path', 'd': 'M0,1 L2,3'}
});
svgroot.appendChild( elem)
bbox = getStrokedBBox( [elem], mockAddSvgElementFromJson, mockPathActions)
deepEqual(bbox, {"x": 0, "y": 1, "width": 2, "height": 2});
svgroot.removeChild( elem);
elem = mockCreateSVGElement({
'element': 'rect',
'attr': { 'id': 'rect', 'x': '0', 'y': '1', 'width': '5', 'height': '10'}
});
svgroot.appendChild( elem);
bbox = getStrokedBBox( [elem], mockAddSvgElementFromJson, mockPathActions)
deepEqual( bbox, { "x": 0, "y": 1, "width": 5, "height": 10});
svgroot.removeChild( elem);
elem = mockCreateSVGElement({
'element': 'line',
'attr': { 'id': 'line', 'x1': '0', 'y1': '1', 'x2': '5', 'y2': '6'}
});
svgroot.appendChild( elem);
bbox = getStrokedBBox( [elem], mockAddSvgElementFromJson, mockPathActions)
deepEqual( bbox, { "x": 0, "y": 1, "width": 5, "height": 5});
svgroot.removeChild( elem);
elem = mockCreateSVGElement({
'element': 'rect',
'attr': { 'id': 'rect', 'x': '0', 'y': '1', 'width': '5', 'height': '10'}
});
var g = mockCreateSVGElement({
'element': 'g',
'attr': {}
});
g.appendChild( elem);
svgroot.appendChild( g);
bbox = getStrokedBBox( [elem], mockAddSvgElementFromJson, mockPathActions)
deepEqual( bbox, { "x": 0, "y": 1, "width": 5, "height": 10});
svgroot.removeChild( g);
});
function radians( degrees) {
return degrees * Math.PI / 180;
}
function rotatePoint( point, angle, origin) {
if( !origin)
origin = {x: 0, y: 0};
var x = point.x - origin.x;
var y = point.y - origin.y;
var theta = radians( angle);
return {
x: x * Math.cos(theta) + y * Math.sin(theta) + origin.x,
y: x * Math.sin(theta) + y * Math.cos(theta) + origin.y
}
}
function rotateRect( rect, angle, origin) {
var tl = rotatePoint( { x: rect.x, y: rect.y}, angle, origin);
var tr = rotatePoint( { x: rect.x + rect.width, y: rect.y}, angle, origin);
var br = rotatePoint( { x: rect.x + rect.width, y: rect.y + rect.height}, angle, origin);
var bl = rotatePoint( { x: rect.x, y: rect.y + rect.height}, angle, origin);
var minx = Math.min(tl.x, tr.x, bl.x, br.x);
var maxx = Math.max(tl.x, tr.x, bl.x, br.x);
var miny = Math.min(tl.y, tr.y, bl.y, br.y);
var maxy = Math.max(tl.y, tr.y, bl.y, br.y);
return {
x: minx,
y: miny,
width: (maxx - minx),
height: (maxy - miny)
};
}
});
</script>
</head>
<body>
<h1 id='qunit-header'>Unit Tests for svgutils.js BBox functions</h1>
<h2 id='qunit-banner'></h2>
<h2 id='qunit-userAgent'></h2>
<ol id='qunit-tests'></ol>
<div id='sandbox'></div>
</body>
</html>