86 lines
2.0 KiB
JavaScript
Executable File
86 lines
2.0 KiB
JavaScript
Executable File
"use strict";
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module.exports = function(Chart) {
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var helpers = Chart.helpers;
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Chart.defaults.global.elements.rectangle = {
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backgroundColor: Chart.defaults.global.defaultColor,
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borderWidth: 0,
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borderColor: Chart.defaults.global.defaultColor
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};
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Chart.elements.Rectangle = Chart.Element.extend({
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draw: function() {
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var ctx = this._chart.ctx;
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var vm = this._view;
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var halfWidth = vm.width / 2,
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leftX = vm.x - halfWidth,
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rightX = vm.x + halfWidth,
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top = vm.base - (vm.base - vm.y),
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halfStroke = vm.borderWidth / 2;
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// Canvas doesn't allow us to stroke inside the width so we can
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// adjust the sizes to fit if we're setting a stroke on the line
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if (vm.borderWidth) {
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leftX += halfStroke;
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rightX -= halfStroke;
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top += halfStroke;
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}
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ctx.beginPath();
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ctx.fillStyle = vm.backgroundColor;
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ctx.strokeStyle = vm.borderColor;
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ctx.lineWidth = vm.borderWidth;
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// It'd be nice to keep this class totally generic to any rectangle
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// and simply specify which border to miss out.
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ctx.moveTo(leftX, vm.base);
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ctx.lineTo(leftX, top);
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ctx.lineTo(rightX, top);
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ctx.lineTo(rightX, vm.base);
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ctx.fill();
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if (vm.borderWidth) {
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ctx.stroke();
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}
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},
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height: function() {
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var vm = this._view;
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return vm.base - vm.y;
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},
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inRange: function(mouseX, mouseY) {
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var vm = this._view;
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var inRange = false;
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if (vm) {
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if (vm.y < vm.base) {
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inRange = (mouseX >= vm.x - vm.width / 2 && mouseX <= vm.x + vm.width / 2) && (mouseY >= vm.y && mouseY <= vm.base);
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} else {
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inRange = (mouseX >= vm.x - vm.width / 2 && mouseX <= vm.x + vm.width / 2) && (mouseY >= vm.base && mouseY <= vm.y);
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}
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}
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return inRange;
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},
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inLabelRange: function(mouseX) {
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var vm = this._view;
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if (vm) {
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return (mouseX >= vm.x - vm.width / 2 && mouseX <= vm.x + vm.width / 2);
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} else {
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return false;
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}
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},
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tooltipPosition: function() {
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var vm = this._view;
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return {
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x: vm.x,
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y: vm.y
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};
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}
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});
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}; |