+/**
+* This script refer to:
+* Title: Signature Pad
+* Author: szimek
+* Availability: https://github.com/szimek/signature_pad
+**/
+
+/**
+ * @class Roo.bootstrap.BezierSignature
+ * @extends Roo.bootstrap.Component
+ * Bootstrap BezierSignature class
+ *
+ * @constructor
+ * Create a new BezierSignature
+ * @param {Object} config The config object
+ */
+
+Roo.bootstrap.BezierSignature = function(config){
+ Roo.bootstrap.BezierSignature.superclass.constructor.call(this, config);
+
+ this.addEvents({
+ // raw events
+ /**
+ * @event click
+ * When a Brick is click
+ * @param {Roo.bootstrap.Brick} this
+ * @param {Roo.EventObject} e
+ */
+ "click" : true
+ });
+};
+
+Roo.extend(Roo.bootstrap.BezierSignature, Roo.bootstrap.Component, {
+
+ /**
+ * @cfg(float or function) Radius of a single dot.
+ */
+ dotSize: false,
+
+ /**
+ * @cfg(float) Minimum width of a line. Defaults to 0.5.
+ */
+ minWidth: 0.5,
+
+ /**
+ * @cfg(float) Maximum width of a line. Defaults to 2.5.
+ */
+ maxWidth: 2.5,
+
+ /**
+ * @cfg(integer) Draw the next point at most once per every x milliseconds. Set it to 0 to turn off throttling. Defaults to 16.
+ */
+ throttle: 16,
+
+ /**
+ * @cfg(integer) Add the next point only if the previous one is farther than x pixels. Defaults to 5.
+ */
+ minDistance: 5,
+
+ /**
+ * @cfg(string) Color used to clear the background. Can be any color format accepted by context.fillStyle. Defaults to "rgba(0,0,0,0)" (transparent black). Use a non-transparent color e.g. "rgb(255,255,255)" (opaque white) if you'd like to save signatures as JPEG images.
+ */
+ backgroundColor: 'rgba(0,0,0,0)',
+
+ /**
+ * @cfg(string) Color used to draw the lines. Can be any color format accepted by context.fillStyle. Defaults to "black".
+ */
+ penColor: 'black',
+
+ /**
+ * @cfg(float) Weight used to modify new velocity based on the previous velocity. Defaults to 0.7.
+ */
+ velocityFilterWeight: 0.7,
+
+ /**
+ * @cfg(function) Callback when stroke begin.
+ */
+ onBegin: false,
+
+ /**
+ * @cfg(function) Callback when stroke end.
+ */
+ onEnd: false,
+
+ Point: (function () {
+ function Point(x, y, time) {
+ this.x = x;
+ this.y = y;
+ this.time = time || Date.now();
+ }
+ Point.prototype.distanceTo = function (start) {
+ return Math.sqrt(Math.pow(this.x - start.x, 2) + Math.pow(this.y - start.y, 2));
+ };
+ Point.prototype.equals = function (other) {
+ return this.x === other.x && this.y === other.y && this.time === other.time;
+ };
+ Point.prototype.velocityFrom = function (start) {
+ return this.time !== start.time
+ ? this.distanceTo(start) / (this.time - start.time)
+ : 0;
+ };
+ return Point;
+ }()),
+
+ Bezier: (function () {
+ function Bezier(startPoint, control2, control1, endPoint, startWidth, endWidth) {
+ this.startPoint = startPoint;
+ this.control2 = control2;
+ this.control1 = control1;
+ this.endPoint = endPoint;
+ this.startWidth = startWidth;
+ this.endWidth = endWidth;
+ }
+ Bezier.fromPoints = function (points, widths) {
+ var c2 = this.calculateControlPoints(points[0], points[1], points[2]).c2;
+ var c3 = this.calculateControlPoints(points[1], points[2], points[3]).c1;
+ return new Bezier(points[1], c2, c3, points[2], widths.start, widths.end);
+ };
+ Bezier.calculateControlPoints = function (s1, s2, s3) {
+ var dx1 = s1.x - s2.x;
+ var dy1 = s1.y - s2.y;
+ var dx2 = s2.x - s3.x;
+ var dy2 = s2.y - s3.y;
+ var m1 = { x: (s1.x + s2.x) / 2.0, y: (s1.y + s2.y) / 2.0 };
+ var m2 = { x: (s2.x + s3.x) / 2.0, y: (s2.y + s3.y) / 2.0 };
+ var l1 = Math.sqrt(dx1 * dx1 + dy1 * dy1);
+ var l2 = Math.sqrt(dx2 * dx2 + dy2 * dy2);
+ var dxm = m1.x - m2.x;
+ var dym = m1.y - m2.y;
+ var k = l2 / (l1 + l2);
+ var cm = { x: m2.x + dxm * k, y: m2.y + dym * k };
+ var tx = s2.x - cm.x;
+ var ty = s2.y - cm.y;
+ return {
+ c1: new Point(m1.x + tx, m1.y + ty),
+ c2: new Point(m2.x + tx, m2.y + ty)
+ };
+ };
+ Bezier.prototype.length = function () {
+ var steps = 10;
+ var length = 0;
+ var px;
+ var py;
+ for (var i = 0; i <= steps; i += 1) {
+ var t = i / steps;
+ var cx = this.point(t, this.startPoint.x, this.control1.x, this.control2.x, this.endPoint.x);
+ var cy = this.point(t, this.startPoint.y, this.control1.y, this.control2.y, this.endPoint.y);
+ if (i > 0) {
+ var xdiff = cx - px;
+ var ydiff = cy - py;
+ length += Math.sqrt(xdiff * xdiff + ydiff * ydiff);
+ }
+ px = cx;
+ py = cy;
+ }
+ return length;
+ };
+ Bezier.prototype.point = function (t, start, c1, c2, end) {
+ return (start * (1.0 - t) * (1.0 - t) * (1.0 - t))
+ + (3.0 * c1 * (1.0 - t) * (1.0 - t) * t)
+ + (3.0 * c2 * (1.0 - t) * t * t)
+ + (end * t * t * t);
+ };
+ return Bezier;
+ }()),
+
+ getAutoCreate : function()
+ {
+ var cls = 'roo-signature';
+
+ if(this.cls){
+ cls += ' ' + this.cls;
+ }
+
+ var cfg = {
+ tag: 'div',
+ cls: cls,
+ cn: [
+ {
+ tag: 'div',
+ cls: 'roo-signature-body',
+ cn: [
+ {
+ tag: 'canvas',
+ cls: 'roo-signature-footer'
+ }
+ ]
+ }
+ ]
+ };
+
+ return cfg;
+ },
+
+ initEvents: function()
+ {
+ // assign all object in here...
+ },
+
+ isValid: function()
+ {
+ // form cannot detect...
+ }
+
+});
+
+
+
+
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projects / roojs1 / commitdiff