dmn-js-drd
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A decision requirements diagram view for dmn-js
186 lines (176 loc) • 6.29 kB
JavaScript
/* eslint-disable max-len */
/**
* Map containing SVG paths needed by BpmnRenderer.
*/
export default function PathMap() {
/**
* Contains a map of path elements
*
* <h1>Path definition</h1>
* A parameterized path is defined like this:
* <pre>
* 'GATEWAY_PARALLEL': {
* d: 'm {mx},{my} {e.x0},0 0,{e.x1} {e.x1},0 0,{e.y0} -{e.x1},0 0,{e.y1} ' +
'-{e.x0},0 0,-{e.y1} -{e.x1},0 0,-{e.y0} {e.x1},0 z',
* height: 17.5,
* width: 17.5,
* heightElements: [2.5, 7.5],
* widthElements: [2.5, 7.5]
* }
* </pre>
* <p>It's important to specify a correct <b>height and width</b> for the path as the scaling
* is based on the ratio between the specified height and width in this object and the
* height and width that is set as scale target (Note x,y coordinates will be scaled with
* individual ratios).</p>
* <p>The '<b>heightElements</b>' and '<b>widthElements</b>' array must contain the values that will be scaled.
* The scaling is based on the computed ratios.
* Coordinates on the y axis should be in the <b>heightElement</b>'s array, they will be scaled using
* the computed ratio coefficient.
* In the parameterized path the scaled values can be accessed through the 'e' object in {} brackets.
* <ul>
* <li>The values for the y axis can be accessed in the path string using {e.y0}, {e.y1}, ....</li>
* <li>The values for the x axis can be accessed in the path string using {e.x0}, {e.x1}, ....</li>
* </ul>
* The numbers x0, x1 respectively y0, y1, ... map to the corresponding array index.
* </p>
m1,1
l 0,55.3
c 29.8,19.7 48.4,-4.2 67.2,-6.7
c 12.2,-2.3 19.8,1.6 30.8,6.2
l 0,-54.6
z
*/
this.pathMap = {
'KNOWLEDGE_SOURCE': {
d: 'm {mx},{my} ' + 'l 0,{e.y0} ' + 'c {e.x0},{e.y1} {e.x1},-{e.y2} {e.x2},-{e.y3} ' + 'c {e.x3},-{e.y4} {e.x4},{e.y5} {e.x5},{e.y6} ' + 'l 0,-{e.y7}z',
width: 100,
height: 65,
widthElements: [29.8, 48.4, 67.2, 12.2, 19.8, 30.8],
heightElements: [55.3, 19.7, 4.2, 6.7, 2.3, 1.6, 6.2, 54.6]
},
'BUSINESS_KNOWLEDGE_MODEL': {
d: 'm {mx},{my} l {e.x0},-{e.y0} l {e.x1},0 l 0,{e.y1} l -{e.x2},{e.y2} l -{e.x3},0z',
width: 125,
height: 45,
widthElements: [13.8, 109.2, 13.8, 109.1],
heightElements: [13.2, 29.8, 13.2]
},
'TEXT_ANNOTATION': {
d: 'm {mx}, {my} m 10,0 l -10,0 l 0,{e.y0} l 10,0',
width: 10,
height: 30,
widthElements: [10],
heightElements: [30]
}
};
this.getRawPath = function getRawPath(pathId) {
return this.pathMap[pathId].d;
};
/**
* Scales the path to the given height and width.
* <h1>Use case</h1>
* <p>Use case is to scale the content of elements (event, gateways) based
* on the element bounding box's size.
* </p>
* <h1>Why not transform</h1>
* <p>Scaling a path with transform() will also scale the stroke and IE does not support
* the option 'non-scaling-stroke' to prevent this.
* Also there are use cases where only some parts of a path should be
* scaled.</p>
*
* @param {string} pathId The ID of the path.
* @param {Object} param <p>
* Example param object scales the path to 60% size of the container (data.width, data.height).
* <pre>
* {
* xScaleFactor: 0.6,
* yScaleFactor:0.6,
* containerWidth: data.width,
* containerHeight: data.height,
* position: {
* mx: 0.46,
* my: 0.2,
* }
* }
* </pre>
* <ul>
* <li>targetpathwidth = xScaleFactor * containerWidth</li>
* <li>targetpathheight = yScaleFactor * containerHeight</li>
* <li>Position is used to set the starting coordinate of the path. M is computed:
* <ul>
* <li>position.x * containerWidth</li>
* <li>position.y * containerHeight</li>
* </ul>
* Center of the container <pre> position: {
* mx: 0.5,
* my: 0.5,
* }</pre>
* Upper left corner of the container
* <pre> position: {
* mx: 0.0,
* my: 0.0,
* }</pre>
* </li>
* </ul>
* </p>
*
*/
this.getScaledPath = function getScaledPath(pathId, param) {
var rawPath = this.pathMap[pathId];
// positioning
// compute the start point of the path
var mx, my;
if (param.abspos) {
mx = param.abspos.x;
my = param.abspos.y;
} else {
mx = param.containerWidth * param.position.mx;
my = param.containerHeight * param.position.my;
}
var coordinates = {}; // map for the scaled coordinates
if (param.position) {
// path
var heightRatio = param.containerHeight / rawPath.height * param.yScaleFactor;
var widthRatio = param.containerWidth / rawPath.width * param.xScaleFactor;
// Apply height ratio
for (var heightIndex = 0; heightIndex < rawPath.heightElements.length; heightIndex++) {
coordinates['y' + heightIndex] = rawPath.heightElements[heightIndex] * heightRatio;
}
// Apply width ratio
for (var widthIndex = 0; widthIndex < rawPath.widthElements.length; widthIndex++) {
coordinates['x' + widthIndex] = rawPath.widthElements[widthIndex] * widthRatio;
}
}
// Apply value to raw path
var path = format(rawPath.d, {
mx: mx,
my: my,
e: coordinates
});
return path;
};
}
// helpers //////////////////////
// copied and adjusted from https://github.com/adobe-webplatform/Snap.svg/blob/master/src/svg.js
var tokenRegex = /\{([^{}]+)\}/g,
objNotationRegex = /(?:(?:^|\.)(.+?)(?=\[|\.|$|\()|\[('|")(.+?)\2\])(\(\))?/g; // matches .xxxxx or ["xxxxx"] to run over object properties
function replacer(all, key, obj) {
var res = obj;
key.replace(objNotationRegex, function (all, name, quote, quotedName, isFunc) {
name = name || quotedName;
if (res) {
if (name in res) {
res = res[name];
}
typeof res == 'function' && isFunc && (res = res());
}
});
res = (res == null || res == obj ? all : res) + '';
return res;
}
function format(str, obj) {
return String(str).replace(tokenRegex, function (all, key) {
return replacer(all, key, obj);
});
}
//# sourceMappingURL=PathMap.js.map