npm_modules: Fork bower_components into Polymer 0.4.0 and 0.5.0 versions

bower_components/chartnewjs/Add-ins/gradientColor.js

-//
-// See ..\Samples\issue_102.html
-//
-// Module intially written by Ole Kroger
-// Change 1 : Omar Sedki - possibility to specify a percentage 
-// Change 2 : Vancoppenolle François - generalized for all graph types
-//
-function gradientColor(area, data, config, i, j, currentAnimPc, value, typegraph, ctx, v0, v1, v2, v3) {
-        // v0 = left xAxis of rectangle or xAxis of center
-        // v1 = top yAxis of rectangle or yAxis of center
-        // v2 = right xAxis of rectangle or internal radius (=0 for PolarArea, Pie and Radar)
-        // v3 = bottom yAxis or rectangle or external radius
-        var grd;
-        if (typegraph == "Line" || typegraph == "Bar" || typegraph == "StackedBar") {
-                grd = ctx.createLinearGradient(v0, v1, v0, v3);
-                var gradientColors = data.datasets[i].gradientColors;
-        } else if (typegraph == "HorizontalStackedBar" || typegraph == "HorizontalBar") {
-                grd = ctx.createLinearGradient(v0, v1, v2, v1);
-                var gradientColors = data.datasets[i].gradientColors;
-        } else if (typegraph == "Pie" || typegraph == "Doughnut" || typegraph == "PolarArea" || typegraph == "Radar") {
-                if (area == "COLOR" || (typegraph == "Radar" && area == "FILLCOLOR")) {
-                        var grd = ctx.createRadialGradient(v0, v1, v2, v0, v1, v3);
-                } else {
-                        var grd = ctx.createRadialGradient(v0 + (v2 - v0) / 2, v1 + (v3 - v1) / 2, 0, v0 + (v2 - v0) / 2, v1 + (v3 - v1) / 2, Math.max((v2 - v0) / 2, (v3 - v1) / 2));
-                }
-                if (typegraph == "Radar") var gradientColors = data.datasets[i].gradientColors;
-                else var gradientColors = data[i].gradientColors;
-        }
-        var steps = gradientColors.length;
-        var currentStepValue = 0;
-        var stepValues = [];
-        var PERCENT_REGEX = /(\d{1,2}|100)%\s*?$/g
-        for (var iter = 0; iter < steps; iter++) {
-                var userStepValue = gradientColors[iter].match(PERCENT_REGEX);
-                if (!userStepValue) {
-                        stepValues[iter] = false;
-                        continue;
-                }
-                userStepValue = parseFloat(userStepValue) / 100.0;
-                stepValues[iter] = userStepValue;
-        }
-        for (var iter = 0; iter < steps; iter++) {
-                if (stepValues[iter] === false) {
-                        if (iter == 0) {
-                                stepValues[iter] = 0;
-                        } else if (iter == steps - 1) {
-                                stepValues[iter] = 1;
-                        } else {
-                                // found next stepValue which isn't false
-                                var s = iter + 1;
-                                while (s < steps - 1 && stepValues[s] === false) {
-                                        s++;
-                                }
-                                var lastStep = ((iter == 0) ? 0 : stepValues[iter - 1]);
-                                stepValues[iter] = ((s >= steps - 1) ? 1 : stepValues[s + 1]) - lastStep;
-                                stepValues[iter] = lastStep + stepValues[iter] / (s - iter + 1);
-                        }
-                }
-                GradientcolorsWithoutStep = gradientColors[iter].replace(PERCENT_REGEX, "").trim();
-                grd.addColorStop(stepValues[iter], GradientcolorsWithoutStep);
-        }
-        return grd;
-}