@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>
209 lines • 19.1 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, rgbToHex, rgbToHsv } from './color-utils';
export class ColorPalette {
constructor() {
this.baseClass = true;
this.colorChange = new EventEmitter(true);
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;
if (this.hue) {
this.ctx.fillStyle = this.hue;
}
else {
this.ctx.fillStyle = '#ff0000';
}
this.ctx.fillRect(0, 0, width, height);
/** @type {?} */
const whiteGrad = this.ctx.createLinearGradient(0, 0, width, 0);
whiteGrad.addColorStop(0, 'rgba(255,255,255,1)');
whiteGrad.addColorStop(1, 'rgba(255,255,255,0)');
this.ctx.fillStyle = whiteGrad;
this.ctx.fillRect(0, 0, width, height);
/** @type {?} */
const blackGrad = this.ctx.createLinearGradient(0, 0, 0, height);
blackGrad.addColorStop(0, 'rgba(0,0,0,0)');
blackGrad.addColorStop(1, 'rgba(0,0,0,1)');
this.ctx.fillStyle = blackGrad;
this.ctx.fillRect(0, 0, width, height);
if (this.selectedPosition) {
this.ctx.strokeStyle = 'white';
this.ctx.fillStyle = 'white';
this.ctx.beginPath();
this.ctx.arc(this.selectedPosition.x, this.selectedPosition.y, 5, 0, 2 * Math.PI);
this.ctx.lineWidth = 3;
this.ctx.stroke();
this.ctx.closePath();
}
}
/**
* @param {?} changes
* @return {?}
*/
ngOnChanges(changes) {
if (changes.color && !changes.color.isFirstChange()) {
/** @type {?} */
const rgbColor = hexToRgb(this.color);
if (rgbColor) {
/** @type {?} */
const hsv = rgbToHsv(rgbColor.r, rgbColor.g, rgbColor.b);
this.selectedPosition = {
x: (hsv.s * 250) / 100,
y: 250 - (hsv.v * 250) / 100
};
this.draw();
}
}
else if (changes.hue && !changes.hue.isFirstChange()) {
this.draw();
/** @type {?} */
const pos = this.selectedPosition;
if (pos) {
this.colorChange.emit(this.getColorAtPosition(pos.x, pos.y));
}
}
}
/**
* @return {?}
*/
ngAfterViewInit() {
if (this.color) {
/** @type {?} */
const rgbColor = hexToRgb(this.color);
if (rgbColor) {
/** @type {?} */
const hsv = rgbToHsv(rgbColor.r, rgbColor.g, rgbColor.b);
this.selectedPosition = {
x: (hsv.s * 250) / 100,
y: 250 - (hsv.v * 250) / 100
};
}
}
this.draw();
}
/**
* @param {?} evt
* @return {?}
*/
onMouseUp(evt) {
this.mousedown = false;
}
/**
* @param {?} evt
* @return {?}
*/
onMouseDown(evt) {
this.mousedown = true;
/** @type {?} */
const xPos = evt.offsetX < 0 ? 0 : evt.offsetX >= 250 ? 249 : evt.offsetX;
/** @type {?} */
const yPos = evt.offsetY < 0 ? 0 : evt.offsetY >= 250 ? 249 : evt.offsetY;
this.selectedPosition = {
x: xPos,
y: yPos,
};
this.draw();
this.emitColor(xPos, yPos);
}
/**
* @param {?} evt
* @return {?}
*/
onMouseMove(evt) {
if (this.mousedown) {
/** @type {?} */
const xPos = evt.offsetX < 0 ? 0 : evt.offsetX >= 250 ? 249 : evt.offsetX;
/** @type {?} */
const yPos = evt.offsetY < 0 ? 0 : evt.offsetY >= 250 ? 249 : evt.offsetY;
this.selectedPosition = {
x: xPos,
y: yPos,
};
this.draw();
this.emitColor(xPos, yPos);
}
}
/**
* @param {?} x
* @param {?} y
* @return {?}
*/
emitColor(x, y) {
/** @type {?} */
const rgbaColor = this.getColorAtPosition(x, y);
this.colorChange.emit(rgbaColor);
}
/**
* @param {?} x
* @param {?} y
* @return {?}
*/
getColorAtPosition(x, y) {
/** @type {?} */
const imageData = this.ctx.getImageData(x, y, 1, 1).data;
return rgbToHex(imageData[0], imageData[1], imageData[2]);
}
}
ColorPalette.decorators = [
{ type: Component, args: [{
selector: 'suka-color-palette',
template: `
<canvas
#canvas
class="color-palette"
width="250"
height="250"
(mousedown)="onMouseDown($event)"
(mousemove)="onMouseMove($event)"
>
</canvas>
`
}] }
];
ColorPalette.propDecorators = {
baseClass: [{ type: HostBinding, args: ['class.color-palette-container',] }],
hue: [{ type: Input }],
color: [{ type: Input }],
colorChange: [{ type: Output }],
canvas: [{ type: ViewChild, args: ['canvas', { static: false },] }],
onMouseUp: [{ type: HostListener, args: ['window:mouseup', ['$event'],] }]
};
if (false) {
/** @type {?} */
ColorPalette.prototype.baseClass;
/** @type {?} */
ColorPalette.prototype.hue;
/** @type {?} */
ColorPalette.prototype.color;
/** @type {?} */
ColorPalette.prototype.colorChange;
/** @type {?} */
ColorPalette.prototype.canvas;
/**
* @type {?}
* @private
*/
ColorPalette.prototype.ctx;
/**
* @type {?}
* @private
*/
ColorPalette.prototype.mousedown;
/** @type {?} */
ColorPalette.prototype.selectedPosition;
}
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{\n  Component,\n  HostBinding,\n  ViewChild,\n  ElementRef,\n  AfterViewInit,\n  HostListener,\n  Output,\n  EventEmitter,\n  OnChanges,\n  Input,\n  SimpleChanges\n} from '@angular/core';\nimport { hexToRgb, rgbToHex, rgbToHsv, hsvToHex } from './color-utils';\n\n@Component({\n  selector: 'suka-color-palette',\n  template: `\n    <canvas\n      #canvas\n      class=\"color-palette\"\n      width=\"250\"\n      height=\"250\"\n      (mousedown)=\"onMouseDown($event)\"\n      (mousemove)=\"onMouseMove($event)\"\n    >\n    </canvas>\n  `\n})\nexport class ColorPalette implements AfterViewInit, OnChanges {\n  @HostBinding('class.color-palette-container') baseClass = true;\n\n  @Input() hue: string;\n\n  @Input() color: string;\n  @Output() colorChange: EventEmitter<string> = new EventEmitter(true);\n\n  @ViewChild('canvas', {static: false}) canvas: ElementRef<HTMLCanvasElement>;\n\n  private ctx: CanvasRenderingContext2D;\n\n  private mousedown = false;\n\n  public selectedPosition: { x: number; y: number };\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\n    if (this.hue) {\n      this.ctx.fillStyle = this.hue;\n    } else {\n      this.ctx.fillStyle = '#ff0000';\n    }\n\n    this.ctx.fillRect(0, 0, width, height);\n\n    const whiteGrad = this.ctx.createLinearGradient(0, 0, width, 0);\n    whiteGrad.addColorStop(0, 'rgba(255,255,255,1)');\n    whiteGrad.addColorStop(1, 'rgba(255,255,255,0)');\n\n    this.ctx.fillStyle = whiteGrad;\n    this.ctx.fillRect(0, 0, width, height);\n\n    const blackGrad = this.ctx.createLinearGradient(0, 0, 0, height);\n    blackGrad.addColorStop(0, 'rgba(0,0,0,0)');\n    blackGrad.addColorStop(1, 'rgba(0,0,0,1)');\n\n    this.ctx.fillStyle = blackGrad;\n    this.ctx.fillRect(0, 0, width, height);\n\n    if (this.selectedPosition) {\n      this.ctx.strokeStyle = 'white';\n      this.ctx.fillStyle = 'white';\n      this.ctx.beginPath();\n      this.ctx.arc(\n        this.selectedPosition.x,\n        this.selectedPosition.y,\n        5,\n        0,\n        2 * Math.PI\n      );\n      this.ctx.lineWidth = 3;\n      this.ctx.stroke();\n      this.ctx.closePath();\n    }\n  }\n\n  ngOnChanges(changes: SimpleChanges) {\n    if (changes.color && !changes.color.isFirstChange()) {\n      const rgbColor = hexToRgb(this.color);\n\n      if (rgbColor) {\n        const hsv = rgbToHsv(rgbColor.r, rgbColor.g, rgbColor.b);\n        this.selectedPosition = {\n          x: (hsv.s * 250) / 100,\n          y: 250 - (hsv.v * 250) / 100\n        };\n        this.draw();\n      }\n    } else if (changes.hue && !changes.hue.isFirstChange()) {\n      this.draw();\n\n      const pos = this.selectedPosition;\n\n      if (pos) {\n        this.colorChange.emit(this.getColorAtPosition(pos.x, pos.y));\n      }\n    }\n  }\n\n  ngAfterViewInit() {\n    if (this.color) {\n      const rgbColor = hexToRgb(this.color);\n\n      if (rgbColor) {\n        const hsv = rgbToHsv(rgbColor.r, rgbColor.g, rgbColor.b);\n        this.selectedPosition = {\n          x: (hsv.s * 250) / 100,\n          y: 250 - (hsv.v * 250) / 100\n        };\n      }\n    }\n    this.draw();\n  }\n\n  @HostListener('window:mouseup', ['$event'])\n  onMouseUp(evt: MouseEvent) {\n    this.mousedown = false;\n  }\n\n  onMouseDown(evt: MouseEvent) {\n    this.mousedown = true;\n    const xPos = evt.offsetX < 0 ? 0 : evt.offsetX >= 250 ? 249 : evt.offsetX;\n    const yPos = evt.offsetY < 0 ? 0 : evt.offsetY >= 250 ? 249 : evt.offsetY;\n\n    this.selectedPosition = {\n      x: xPos,\n      y: yPos,\n    };\n    this.draw();\n    this.emitColor(xPos, yPos);\n  }\n\n  onMouseMove(evt: MouseEvent) {\n    if (this.mousedown) {\n      const xPos = evt.offsetX < 0 ? 0 : evt.offsetX >= 250 ? 249 : evt.offsetX;\n      const yPos = evt.offsetY < 0 ? 0 : evt.offsetY >= 250 ? 249 : evt.offsetY;\n\n      this.selectedPosition = {\n        x: xPos,\n        y: yPos,\n      };\n      this.draw();\n      this.emitColor(xPos, yPos);\n    }\n  }\n\n  emitColor(x: number, y: number) {\n    const rgbaColor = this.getColorAtPosition(x, y);\n    this.colorChange.emit(rgbaColor);\n  }\n\n  getColorAtPosition(x: number, y: number) {\n    const imageData = this.ctx.getImageData(x, y, 1, 1).data;\n    return rgbToHex(imageData[0], imageData[1], imageData[2]);\n  }\n}\n"]}