scichart
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Fast WebGL JavaScript Charting Library and Framework
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JavaScript
"use strict";
var __extends = (this && this.__extends) || (function () {
var extendStatics = function (d, b) {
extendStatics = Object.setPrototypeOf ||
({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
return extendStatics(d, b);
};
return function (d, b) {
if (typeof b !== "function" && b !== null)
throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
extendStatics(d, b);
function __() { this.constructor = d; }
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
})();
Object.defineProperty(exports, "__esModule", { value: true });
exports.XAxisDragModifier = void 0;
var CursorStyle_1 = require("../../types/CursorStyle");
var DragMode_1 = require("../../types/DragMode");
var translate_1 = require("../../utils/translate");
var AxisBase2D_1 = require("../Visuals/Axis/AxisBase2D");
var ChartModifierBase2D_1 = require("./ChartModifierBase2D");
var ChartModifierType_1 = require("../../types/ChartModifierType");
/**
* The XAxisDragModifier provides scaling/panning behavior for X axis {@link AxisBase2D}
* within SciChart - High Performance {@link https://www.scichart.com/javascript-chart-features | JavaScript Charts}
* @remarks
*
* To apply the XAxisDragModifier to a {@link SciChartSurface} and add scaling behavior,
* use the following code:
*
* ```ts
* sciChartSurface.chartModifiers.add(new XAxisDragModifier());
* ```
*
* ---
* 📚 Docs: {@link https://www.scichart.com/documentation/js/v4/2d-charts/chart-modifier-api/zooming-and-panning/x-axis-drag-modifier/}
*/
var XAxisDragModifier = /** @class */ (function (_super) {
__extends(XAxisDragModifier, _super);
/**
* Creates an instance of a XAxisDragModifier
* @param options optional parameters to pass to the XAxisDragModifier to configure it upon construction
*
* ---
* 📚 Docs: {@link https://www.scichart.com/documentation/js/v4/2d-charts/chart-modifier-api/zooming-and-panning/x-axis-drag-modifier/}
*/
function XAxisDragModifier(options) {
var _this = this;
var _a;
_this = _super.call(this, options) || this;
_this.type = ChartModifierType_1.EChart2DModifierType.XAxisDrag;
_this.dragMode = DragMode_1.EDragMode.Scaling;
_this.isClickedOverXAxis = false;
_this.isVerticalChart = false;
_this.cursorStyle = CursorStyle_1.ECursorStyle.Defalut;
_this.dragMode = (_a = options === null || options === void 0 ? void 0 : options.dragMode) !== null && _a !== void 0 ? _a : _this.dragMode;
return _this;
}
/**
* Not supported for {@link XAxisDragModifier}, use includeXAxis instead
*/
XAxisDragModifier.prototype.includeYAxis = function (axis, isIncluded) {
throw Error("method includeYAxis() is not supported for XAxisDragModifier, use includeXAxis() instead");
};
/**
* Not supported for {@link XAxisDragModifier}, use getIncludedXAxis instead
*/
XAxisDragModifier.prototype.getIncludedYAxis = function () {
throw Error("method getIncludedYAxis() is not supported for XAxisDragModifier, use getIncludedXAxis() instead");
};
/** @inheritDoc */
XAxisDragModifier.prototype.modifierMouseDown = function (args) {
_super.prototype.modifierMouseDown.call(this, args);
if (!this.isAttached) {
throw new Error("Should not call XAxisDragModifier.modifierMouseDown if not attached");
}
if ((0, ChartModifierBase2D_1.testIsOverAxes)(this.getHorizontalXAxes(), args.mousePoint)) {
// Horizontal chart
this.isVerticalChart = false;
this.startDragging(this.getHorizontalXAxes(), args);
}
else if ((0, ChartModifierBase2D_1.testIsOverAxes)(this.getVerticalXAxes(), args.mousePoint)) {
// Vertical chart
this.isVerticalChart = true;
this.startDragging(this.getVerticalXAxes(), args);
}
};
/** @inheritDoc */
XAxisDragModifier.prototype.modifierMouseMove = function (args) {
if (this.isClickedOverXAxis) {
_super.prototype.modifierMouseMove.call(this, args);
if (this.pointFrom === undefined) {
return;
}
if (this.dragMode === DragMode_1.EDragMode.Panning) {
this.doPanning(args.mousePoint);
}
else if (this.dragMode === DragMode_1.EDragMode.Scaling) {
this.doScaling(args.mousePoint);
}
}
else {
this.updateCursor(args.mousePoint);
}
};
/** @inheritDoc */
XAxisDragModifier.prototype.modifierMouseUp = function (args) {
_super.prototype.modifierMouseUp.call(this, args);
this.updateCursor(args.mousePoint);
this.pointFrom = undefined;
this.isClickedOverXAxis = false;
};
/** @inheritDoc */
XAxisDragModifier.prototype.toJSON = function () {
var json = _super.prototype.toJSON.call(this);
var options = {
dragMode: this.dragMode
};
Object.assign(json.options, options);
return json;
};
XAxisDragModifier.prototype.updateCursor = function (mousePoint) {
var canvas = this.parentSurface.getMainCanvas();
if ((0, ChartModifierBase2D_1.testIsOverAxes)(this.getHorizontalXAxes(), mousePoint)) {
if (this.cursorStyle !== CursorStyle_1.ECursorStyle.EW) {
canvas.style.cursor = CursorStyle_1.ECursorStyle.EW;
this.cursorStyle = CursorStyle_1.ECursorStyle.EW;
}
}
else if ((0, ChartModifierBase2D_1.testIsOverAxes)(this.getVerticalXAxes(), mousePoint)) {
if (this.cursorStyle !== CursorStyle_1.ECursorStyle.NS) {
canvas.style.cursor = CursorStyle_1.ECursorStyle.NS;
this.cursorStyle = CursorStyle_1.ECursorStyle.NS;
}
}
else {
if (this.cursorStyle !== CursorStyle_1.ECursorStyle.Defalut) {
canvas.style.cursor = CursorStyle_1.ECursorStyle.Defalut;
this.cursorStyle = CursorStyle_1.ECursorStyle.Defalut;
}
}
};
XAxisDragModifier.prototype.doPanning = function (mousePoint) {
var pointTo = mousePoint;
if (this.isVerticalChart) {
var yDelta_1 = pointTo.y - this.pointFrom.y;
this.activeAxes.forEach(function (x) {
var delta = x.flippedCoordinates ? -yDelta_1 : yDelta_1;
x.scroll(delta, AxisBase2D_1.EClipMode.None);
});
}
else {
var xDelta_1 = pointTo.x - this.pointFrom.x;
this.activeAxes.forEach(function (x) {
var delta = x.flippedCoordinates ? -xDelta_1 : xDelta_1;
x.scroll(delta, AxisBase2D_1.EClipMode.None);
});
}
this.pointFrom = pointTo;
};
XAxisDragModifier.prototype.doScaling = function (pointTo) {
var _this = this;
if (this.isVerticalChart) {
this.activeAxes.forEach(function (axis, index) {
var axisViewRect = axis.viewRect;
var yFromTrans = (0, translate_1.translateFromCanvasToSeriesViewRectY)(_this.pointFrom.y, axisViewRect);
var isMoreThanHalf = yFromTrans >= axisViewRect.height / 2;
var yDelta = (pointTo.y - _this.pointFrom.y) / axisViewRect.height;
axis.scale(_this.initialVisibleRanges[index], yDelta, isMoreThanHalf);
});
}
else {
this.activeAxes.forEach(function (axis, index) {
var axisViewRect = axis.viewRect;
var xFromTrans = (0, translate_1.translateFromCanvasToSeriesViewRectX)(_this.pointFrom.x, axisViewRect);
var isMoreThanHalf = xFromTrans >= axisViewRect.width / 2;
var xDelta = (pointTo.x - _this.pointFrom.x) / axisViewRect.width;
axis.scale(_this.initialVisibleRanges[index], xDelta, isMoreThanHalf);
});
}
};
XAxisDragModifier.prototype.getHorizontalXAxes = function () {
return this.getIncludedXAxis().filter(function (el) { return el.isHorizontalAxis; });
};
XAxisDragModifier.prototype.getVerticalXAxes = function () {
return this.getIncludedXAxis().filter(function (el) { return !el.isHorizontalAxis; });
};
XAxisDragModifier.prototype.startDragging = function (axes, args) {
this.isClickedOverXAxis = true;
var activeAxes = (0, ChartModifierBase2D_1.getActiveAxes)(axes, args.mousePoint);
var initialVisibleRanges = [];
activeAxes.forEach(function (el) {
initialVisibleRanges.push(el.visibleRange);
});
this.activeAxes = activeAxes;
this.initialVisibleRanges = initialVisibleRanges;
this.pointFrom = args.mousePoint;
args.handled = true;
};
return XAxisDragModifier;
}(ChartModifierBase2D_1.ChartModifierBase2D));
exports.XAxisDragModifier = XAxisDragModifier;