@kushki/ng-suka
Version:
<p align="center"> <h1 align="center">Suka Components Angular</h1> <p align="center"> An Angular implementation of the Suka Design System </p> </p>
186 lines • 15.4 kB
JavaScript
/**
* @fileoverview added by tsickle
* @suppress {checkTypes,constantProperty,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
*/
import { Component, HostBinding, ViewChild, ElementRef, HostListener, Output, EventEmitter, Input } from '@angular/core';
import { hexToRgb, rgbToHsv, rgbToHex } from './color-utils';
export class ColorSlider {
constructor() {
this.baseClass = true;
this.mousedown = false;
this.hueChange = new EventEmitter();
}
/**
* @param {?} evt
* @return {?}
*/
onMouseUp(evt) {
this.mousedown = false;
}
/**
* @return {?}
*/
draw() {
if (!this.ctx) {
this.ctx = this.canvas.nativeElement.getContext('2d');
}
/** @type {?} */
const width = this.canvas.nativeElement.width;
/** @type {?} */
const height = this.canvas.nativeElement.height;
this.ctx.clearRect(0, 0, width, height);
/** @type {?} */
const gradient = this.ctx.createLinearGradient(0, 0, 0, height);
gradient.addColorStop(0, 'rgba(255, 0, 0, 1)');
gradient.addColorStop(0.17, 'rgba(255, 255, 0, 1)');
gradient.addColorStop(0.34, 'rgba(0, 255, 0, 1)');
gradient.addColorStop(0.51, 'rgba(0, 255, 255, 1)');
gradient.addColorStop(0.68, 'rgba(0, 0, 255, 1)');
gradient.addColorStop(0.85, 'rgba(255, 0, 255, 1)');
gradient.addColorStop(1, 'rgba(255, 0, 0, 1)');
this.ctx.beginPath();
this.ctx.rect(0, 0, width, height);
this.ctx.fillStyle = gradient;
this.ctx.fill();
this.ctx.closePath();
if (this.selectedHeight) {
this.ctx.beginPath();
this.ctx.strokeStyle = 'white';
this.ctx.lineWidth = 4;
this.ctx.rect(0, this.selectedHeight - 5, width, 10);
this.ctx.stroke();
this.ctx.closePath();
}
}
/**
* @param {?} evt
* @return {?}
*/
onMouseDown(evt) {
this.mousedown = true;
this.selectedHeight = evt.offsetY;
this.draw();
this.emitHue(evt.offsetY);
}
/**
* @param {?} evt
* @return {?}
*/
onMouseMove(evt) {
if (this.mousedown) {
this.selectedHeight = evt.offsetY;
this.draw();
this.emitHue(evt.offsetY);
}
}
/**
* @param {?} y
* @return {?}
*/
emitHue(y) {
if (y < 0) {
y = 0;
}
else if (y >= 250) {
y = 249;
}
/** @type {?} */
const color = this.getColorAtPosition(y);
this.hueChange.emit(rgbToHex(color.r, color.g, color.b));
}
/**
* @param {?} y
* @return {?}
*/
getColorAtPosition(y) {
/** @type {?} */
const imageData = this.ctx.getImageData(5, y, 1, 1).data;
return {
r: imageData[0],
g: imageData[1],
b: imageData[2],
};
}
/**
* @param {?} changes
* @return {?}
*/
ngOnChanges(changes) {
if (changes.hue && !changes.hue.isFirstChange()) {
/** @type {?} */
const rgbColor = hexToRgb(this.hue);
if (rgbColor) {
/** @type {?} */
const hsvColor = rgbToHsv(rgbColor.r, rgbColor.g, rgbColor.b);
/** @type {?} */
const hueFactor = hsvColor.h / 360;
this.selectedHeight = hueFactor * 250;
this.draw();
}
}
}
/**
* @return {?}
*/
ngAfterViewInit() {
if (this.hue) {
/** @type {?} */
const rgbColor = hexToRgb(this.hue);
/** @type {?} */
const hsvColor = rgbToHsv(rgbColor.r, rgbColor.g, rgbColor.b);
/** @type {?} */
const hueFactor = hsvColor.h / 360;
this.selectedHeight = hueFactor * 250;
}
this.draw();
}
}
ColorSlider.decorators = [
{ type: Component, args: [{
selector: 'suka-color-slider',
template: `
<canvas
#canvas
class="color-slider"
width="20"
height="250"
(mousedown)="onMouseDown($event)"
(mousemove)="onMouseMove($event)"
>
</canvas>
`
}] }
];
ColorSlider.propDecorators = {
baseClass: [{ type: HostBinding, args: ['class.color-slider-wrapper',] }],
hue: [{ type: Input }],
hueChange: [{ type: Output }],
canvas: [{ type: ViewChild, args: ['canvas', { static: false },] }],
onMouseUp: [{ type: HostListener, args: ['window:mouseup', ['$event'],] }]
};
if (false) {
/** @type {?} */
ColorSlider.prototype.baseClass;
/**
* @type {?}
* @private
*/
ColorSlider.prototype.ctx;
/**
* @type {?}
* @private
*/
ColorSlider.prototype.mousedown;
/**
* @type {?}
* @private
*/
ColorSlider.prototype.selectedHeight;
/** @type {?} */
ColorSlider.prototype.hue;
/** @type {?} */
ColorSlider.prototype.hueChange;
/** @type {?} */
ColorSlider.prototype.canvas;
}
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onMouseUp(evt: MouseEvent) {\n    this.mousedown = false;\n  }\n\n  draw() {\n    if (!this.ctx) {\n      this.ctx = this.canvas.nativeElement.getContext('2d');\n    }\n\n    const width = this.canvas.nativeElement.width;\n    const height = this.canvas.nativeElement.height;\n    this.ctx.clearRect(0, 0, width, height);\n\n    const gradient = this.ctx.createLinearGradient(0, 0, 0, height);\n    gradient.addColorStop(0, 'rgba(255, 0, 0, 1)');\n    gradient.addColorStop(0.17, 'rgba(255, 255, 0, 1)');\n    gradient.addColorStop(0.34, 'rgba(0, 255, 0, 1)');\n    gradient.addColorStop(0.51, 'rgba(0, 255, 255, 1)');\n    gradient.addColorStop(0.68, 'rgba(0, 0, 255, 1)');\n    gradient.addColorStop(0.85, 'rgba(255, 0, 255, 1)');\n    gradient.addColorStop(1, 'rgba(255, 0, 0, 1)');\n\n    this.ctx.beginPath();\n    this.ctx.rect(0, 0, width, height);\n    this.ctx.fillStyle = gradient;\n    this.ctx.fill();\n    this.ctx.closePath();\n\n    if (this.selectedHeight) {\n      this.ctx.beginPath();\n      this.ctx.strokeStyle = 'white';\n      this.ctx.lineWidth = 4;\n      this.ctx.rect(0, this.selectedHeight - 5, width, 10);\n      this.ctx.stroke();\n      this.ctx.closePath();\n    }\n  }\n\n  onMouseDown(evt: MouseEvent) {\n    this.mousedown = true;\n    this.selectedHeight = evt.offsetY;\n    this.draw();\n    this.emitHue(evt.offsetY);\n  }\n\n  onMouseMove(evt: MouseEvent) {\n    if (this.mousedown) {\n      this.selectedHeight = evt.offsetY;\n      this.draw();\n      this.emitHue(evt.offsetY);\n    }\n  }\n\n  emitHue(y: number) {\n    if (y < 0) {\n      y = 0;\n    } else if (y >= 250) {\n      y = 249;\n    }\n    const color = this.getColorAtPosition(y);\n    this.hueChange.emit(rgbToHex(color.r, color.g, color.b));\n  }\n\n  getColorAtPosition(y: number) {\n    const imageData = this.ctx.getImageData(5, y, 1, 1).data;\n    return {\n      r: imageData[0],\n      g: imageData[1],\n      b: imageData[2],\n    };\n  }\n\n  ngOnChanges(changes: SimpleChanges) {\n    if (changes.hue && !changes.hue.isFirstChange()) {\n      const rgbColor = hexToRgb(this.hue);\n      if (rgbColor) {\n        const hsvColor = rgbToHsv(rgbColor.r, rgbColor.g, rgbColor.b);\n        const hueFactor = hsvColor.h / 360;\n        this.selectedHeight = hueFactor * 250;\n        this.draw();\n      }\n    }\n  }\n\n  ngAfterViewInit() {\n    if (this.hue) {\n      const rgbColor = hexToRgb(this.hue);\n      const hsvColor = rgbToHsv(rgbColor.r, rgbColor.g, rgbColor.b);\n      const hueFactor = hsvColor.h / 360;\n      this.selectedHeight = hueFactor * 250;\n    }\n\n    this.draw();\n  }\n}\n"]}