754 lines
22 KiB
TypeScript
754 lines
22 KiB
TypeScript
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import { hex, clamp, lpad, RGBA } from "./util";
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import { SourceLocation } from "./workertypes";
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import { VirtualList } from "./vlist"
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// Emulator classes
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export var PLATFORMS = {};
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var _random_state = 1;
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export function noise() {
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let x = _random_state;
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x ^= x << 13;
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x ^= x >> 17;
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x ^= x << 5;
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return (_random_state = x) & 0xff;
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}
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export function getNoiseSeed() {
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return _random_state;
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}
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export function setNoiseSeed(x : number) {
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_random_state = x;
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}
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type KeyboardCallback = (which:number, charCode:number, flags:KeyFlags) => void;
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export function __createCanvas(doc:HTMLDocument, mainElement:HTMLElement, width:number, height:number) : HTMLCanvasElement {
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var canvas = doc.createElement('canvas');
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canvas.width = width;
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canvas.height = height;
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canvas.classList.add("emuvideo");
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canvas.tabIndex = -1; // Make it focusable
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mainElement.appendChild(canvas);
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return canvas;
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}
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export enum KeyFlags {
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KeyDown = 1,
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Shift = 2,
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Ctrl = 4,
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Alt = 8,
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Meta = 16,
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KeyUp = 64,
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KeyPress = 128,
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}
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export function _setKeyboardEvents(canvas:HTMLElement, callback:KeyboardCallback) {
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canvas.onkeydown = (e) => {
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let flags = _metakeyflags(e);
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callback(e.which, 0, KeyFlags.KeyDown|flags);
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if (!flags) e.preventDefault(); // eat all keys that don't have a modifier
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};
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canvas.onkeyup = (e) => {
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callback(e.which, 0, KeyFlags.KeyUp|_metakeyflags(e));
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};
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canvas.onkeypress = (e) => {
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callback(e.which, e.charCode, KeyFlags.KeyPress|_metakeyflags(e));
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};
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};
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type VideoCanvasOptions = {rotate?:number, overscan?:boolean, aspect?:number};
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export class RasterVideo {
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mainElement : HTMLElement;
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width : number;
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height : number;
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options : VideoCanvasOptions;
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constructor(mainElement:HTMLElement, width:number, height:number, options?:VideoCanvasOptions) {
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this.mainElement = mainElement;
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this.width = width;
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this.height = height;
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this.options = options;
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}
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canvas : HTMLCanvasElement;
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ctx : CanvasRenderingContext2D;
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imageData : ImageData;
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datau32 : Uint32Array;
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vcanvas : JQuery;
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paddle_x = 255;
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paddle_y = 255;
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setRotate(rotate:number) {
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var canvas = this.canvas;
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if (rotate) {
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// TODO: aspect ratio?
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canvas.style.transform = "rotate("+rotate+"deg)";
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if (canvas.width < canvas.height)
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canvas.style.paddingLeft = canvas.style.paddingRight = "10%";
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} else {
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canvas.style.transform = null;
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canvas.style.paddingLeft = canvas.style.paddingRight = null;
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}
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}
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create(doc?: HTMLDocument) {
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var canvas;
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this.canvas = canvas = __createCanvas(doc || document, this.mainElement, this.width, this.height);
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this.vcanvas = $(canvas);
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if (this.options && this.options.rotate) {
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this.setRotate(this.options.rotate);
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}
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if (this.options && this.options.overscan) {
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this.vcanvas.css('padding','0px');
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}
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if (this.options && this.options.aspect) {
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console.log(this.options);
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this.vcanvas.css('aspect-ratio', this.options.aspect+"");
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}
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this.ctx = canvas.getContext('2d');
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this.imageData = this.ctx.createImageData(this.width, this.height);
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this.datau32 = new Uint32Array(this.imageData.data.buffer);
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}
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setKeyboardEvents(callback) {
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_setKeyboardEvents(this.canvas, callback);
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}
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getFrameData() { return this.datau32; }
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getContext() { return this.ctx; }
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updateFrame(sx?:number, sy?:number, dx?:number, dy?:number, w?:number, h?:number) {
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if (w && h)
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this.ctx.putImageData(this.imageData, sx, sy, dx, dy, w, h);
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else
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this.ctx.putImageData(this.imageData, 0, 0);
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}
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clearRect(dx:number, dy:number, w:number, h:number) {
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var ctx = this.ctx;
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ctx.fillStyle = '#000000';
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ctx.fillRect(dx, dy, w, h);
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}
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setupMouseEvents(el? : HTMLCanvasElement) {
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if (!el) el = this.canvas;
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$(el).mousemove( (e) => {
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var pos = getMousePos(el, e);
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var new_x = Math.floor(pos.x * 255 / this.canvas.width);
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var new_y = Math.floor(pos.y * 255 / this.canvas.height);
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this.paddle_x = clamp(0, 255, new_x);
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this.paddle_y = clamp(0, 255, new_y);
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});
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};
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}
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export class VectorVideo extends RasterVideo {
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persistenceAlpha = 0.5;
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jitter = 1.0;
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gamma = 0.8;
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sx : number;
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sy : number;
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create() {
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super.create();
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this.sx = this.width/1024.0;
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this.sy = this.height/1024.0;
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}
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clear() {
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var ctx = this.ctx;
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ctx.globalCompositeOperation = 'source-over';
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ctx.globalAlpha = this.persistenceAlpha;
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ctx.fillStyle = '#000000';
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ctx.fillRect(0, 0, this.width, this.height);
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ctx.globalAlpha = 1.0;
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ctx.globalCompositeOperation = 'lighter';
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}
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COLORS = [
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'#111111',
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'#1111ff',
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'#11ff11',
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'#11ffff',
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'#ff1111',
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'#ff11ff',
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'#ffff11',
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'#ffffff'
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];
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drawLine(x1:number, y1:number, x2:number, y2:number, intensity:number, color:number) {
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var ctx = this.ctx;
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var sx = this.sx;
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var sy = this.sy;
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//console.log(x1,y1,x2,y2,intensity,color);
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if (intensity > 0) {
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// TODO: landscape vs portrait
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var alpha = Math.pow(intensity / 255.0, this.gamma);
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ctx.globalAlpha = alpha;
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ctx.lineWidth = 3;
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ctx.beginPath();
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// TODO: bright dots
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var jx = this.jitter * (Math.random() - 0.5);
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var jy = this.jitter * (Math.random() - 0.5);
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x1 += jx;
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x2 += jx;
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y1 += jy;
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y2 += jy;
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ctx.moveTo(x1*sx, this.height-y1*sy);
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if (x1 == x2 && y1 == y2)
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ctx.lineTo(x2*sx+1, this.height-y2*sy);
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else
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ctx.lineTo(x2*sx, this.height-y2*sy);
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ctx.strokeStyle = this.COLORS[color & 7];
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ctx.stroke();
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}
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}
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}
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export class RAM {
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mem : Uint8Array;
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constructor(size:number) {
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this.mem = new Uint8Array(new ArrayBuffer(size));
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}
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}
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export class EmuHalt extends Error {
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$loc : SourceLocation;
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constructor(msg: string, loc?: SourceLocation) {
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super(msg);
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this.$loc = loc;
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Object.setPrototypeOf(this, EmuHalt.prototype);
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}
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}
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export var useRequestAnimationFrame : boolean = false;
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export class AnimationTimer {
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callback;
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running : boolean = false;
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pulsing : boolean = false;
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nextts = 0;
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nframes;
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startts; // for FPS calc
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frameRate;
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intervalMsec;
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useReqAnimFrame = useRequestAnimationFrame && typeof window.requestAnimationFrame === 'function'; // need for unit test
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constructor(frequencyHz:number, callback:() => void) {
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this.frameRate = frequencyHz;
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this.intervalMsec = 1000.0 / frequencyHz;
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this.callback = callback;
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}
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scheduleFrame(msec:number) {
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var fn = (timestamp) => {
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try {
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this.nextFrame(this.useReqAnimFrame ? timestamp : Date.now());
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} catch (e) {
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this.running = false;
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this.pulsing = false;
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throw e;
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}
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}
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if (this.useReqAnimFrame)
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window.requestAnimationFrame(fn);
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else
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setTimeout(fn, msec);
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}
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nextFrame(ts:number) {
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if (ts > this.nextts) {
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if (this.running) {
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this.callback();
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}
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if (this.nframes == 0)
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this.startts = ts;
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if (this.nframes++ == 300) {
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console.log("Avg framerate: " + this.nframes*1000/(ts-this.startts) + " fps");
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}
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}
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this.nextts += this.intervalMsec;
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// frames skipped? catch up
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if ((ts - this.nextts) > 1000) {
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//console.log(ts - this.nextts, 'msec skipped');
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this.nextts = ts;
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}
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if (this.running) {
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this.scheduleFrame(this.nextts - ts);
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} else {
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this.pulsing = false;
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}
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}
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isRunning() {
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return this.running;
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}
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start() {
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if (!this.running) {
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this.running = true;
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this.nextts = 0;
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this.nframes = 0;
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if (!this.pulsing) {
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this.scheduleFrame(0);
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this.pulsing = true;
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}
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}
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}
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stop() {
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this.running = false;
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}
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}
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// TODO: move to util?
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export function dumpRAM(ram:ArrayLike<number>, ramofs:number, ramlen:number) : string {
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var s = "";
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var bpel = ram['BYTES_PER_ELEMENT'] || 1;
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var perline = Math.ceil(16 / bpel);
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var isFloat = ram instanceof Float32Array || ram instanceof Float64Array;
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// TODO: show scrollable RAM for other platforms
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for (var ofs=0; ofs<ramlen; ofs+=perline) {
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s += '$' + hex(ofs+ramofs) + ':';
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for (var i=0; i<perline; i++) {
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if (ofs+i < ram.length) {
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if (i == perline/2) s += " ";
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if (isFloat) s += " " + ram[ofs+i].toPrecision(bpel*2);
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else s += " " + hex(ram[ofs+i], bpel*2);
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}
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}
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s += "\n";
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}
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return s;
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}
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export interface KeyDef {
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c:number, // key code
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n:string, // name
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// for gamepad
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plyr?:number,
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xaxis?:number,
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yaxis?:number,
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button?:number
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};
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export interface KeyMapEntry {
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index:number;
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mask:number;
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def:KeyDef;
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}
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type KeyCodeMap = Map<number,KeyMapEntry>;
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export const Keys = {
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ANYKEY: {c: 0, n: "?"},
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// gamepad and keyboard (player 0)
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UP: {c: 38, n: "Up", plyr:0, yaxis:-1},
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DOWN: {c: 40, n: "Down", plyr:0, yaxis:1},
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LEFT: {c: 37, n: "Left", plyr:0, xaxis:-1},
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RIGHT: {c: 39, n: "Right", plyr:0, xaxis:1},
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A: {c: 32, n: "Space", plyr:0, button:0},
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B: {c: 16, n: "Shift", plyr:0, button:1},
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GP_A: {c: 88, n: "X", plyr:0, button:0},
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GP_B: {c: 90, n: "Z", plyr:0, button:1},
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GP_C: {c: 86, n: "V", plyr:0, button:2},
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GP_D: {c: 67, n: "C", plyr:0, button:3},
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SELECT: {c: 220, n: "\\", plyr:0, button:8},
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START: {c: 13, n: "Enter", plyr:0, button:9},
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OPTION: {c: 8, n: "Bcksp", plyr:0, button:10},
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// gamepad and keyboard (player 1)
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P2_UP: {c: 87, n: "W", plyr:1, yaxis:-1},
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P2_DOWN: {c: 83, n: "S", plyr:1, yaxis:1},
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P2_LEFT: {c: 65, n: "A", plyr:1, xaxis:-1},
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P2_RIGHT: {c: 68, n: "D", plyr:1, xaxis:1},
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P2_A: {c: 84, n: "T", plyr:1, button:0},
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P2_B: {c: 82, n: "R", plyr:1, button:1},
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P2_GP_A: {c: 69, n: "E", plyr:1, button:0},
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P2_GP_B: {c: 82, n: "R", plyr:1, button:1},
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P2_GP_C: {c: 84, n: "T", plyr:1, button:2},
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P2_GP_D: {c: 89, n: "Y", plyr:1, button:3},
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P2_SELECT: {c: 70, n: "F", plyr:1, button:8},
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P2_START: {c: 71, n: "G", plyr:1, button:9},
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// keyboard only
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VK_ESCAPE: {c: 27, n: "Esc"},
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VK_F1: {c: 112, n: "F1"},
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VK_F2: {c: 113, n: "F2"},
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VK_F3: {c: 114, n: "F3"},
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VK_F4: {c: 115, n: "F4"},
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VK_F5: {c: 116, n: "F5"},
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VK_F6: {c: 117, n: "F6"},
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VK_F7: {c: 118, n: "F7"},
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VK_F8: {c: 119, n: "F8"},
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VK_F9: {c: 120, n: "F9"},
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VK_F10: {c: 121, n: "F10"},
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VK_F11: {c: 122, n: "F11"},
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VK_F12: {c: 123, n: "F12"},
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VK_SCROLL_LOCK: {c: 145, n: "ScrLck"},
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VK_PAUSE: {c: 19, n: "Pause"},
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VK_QUOTE: {c: 222, n: "'"},
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VK_1: {c: 49, n: "1"},
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VK_2: {c: 50, n: "2"},
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VK_3: {c: 51, n: "3"},
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VK_4: {c: 52, n: "4"},
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VK_5: {c: 53, n: "5"},
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VK_6: {c: 54, n: "6"},
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VK_7: {c: 55, n: "7"},
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VK_8: {c: 56, n: "8"},
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VK_9: {c: 57, n: "9"},
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VK_0: {c: 48, n: "0"},
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VK_MINUS: {c: 189, n: "-"},
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VK_MINUS2: {c: 173, n: "-"},
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VK_EQUALS: {c: 187, n: "="},
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VK_EQUALS2: {c: 61, n: "="},
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VK_BACK_SPACE: {c: 8, n: "Bkspc"},
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VK_TAB: {c: 9, n: "Tab"},
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VK_Q: {c: 81, n: "Q"},
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VK_W: {c: 87, n: "W"},
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VK_E: {c: 69, n: "E"},
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VK_R: {c: 82, n: "R"},
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VK_T: {c: 84, n: "T"},
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VK_Y: {c: 89, n: "Y"},
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VK_U: {c: 85, n: "U"},
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VK_I: {c: 73, n: "I"},
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VK_O: {c: 79, n: "O"},
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VK_P: {c: 80, n: "P"},
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VK_ACUTE: {c: 219, n: "´"},
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VK_OPEN_BRACKET: {c: 219, n: "["},
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VK_CLOSE_BRACKET: {c: 221, n: "]"},
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VK_CAPS_LOCK: {c: 20, n: "CpsLck"},
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VK_A: {c: 65, n: "A"},
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VK_S: {c: 83, n: "S"},
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VK_D: {c: 68, n: "D"},
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VK_F: {c: 70, n: "F"},
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VK_G: {c: 71, n: "G"},
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VK_H: {c: 72, n: "H"},
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VK_J: {c: 74, n: "J"},
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VK_K: {c: 75, n: "K"},
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VK_L: {c: 76, n: "L"},
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VK_CEDILLA: {c: 186, n: "Ç"},
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VK_TILDE: {c: 222, n: "~"},
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VK_ENTER: {c: 13, n: "Enter"},
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VK_SHIFT: {c: 16, n: "Shift"},
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VK_BACK_SLASH: {c: 220, n: "\\"},
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VK_Z: {c: 90, n: "Z"},
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VK_X: {c: 88, n: "X"},
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VK_C: {c: 67, n: "C"},
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VK_V: {c: 86, n: "V"},
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VK_B: {c: 66, n: "B"},
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VK_N: {c: 78, n: "N"},
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VK_M: {c: 77, n: "M"},
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VK_COMMA: {c: 188, n: "] ="},
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VK_PERIOD: {c: 190, n: "."},
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VK_SEMICOLON: {c: 59, n: ";"},
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VK_SLASH: {c: 191, n: "/"},
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VK_CONTROL: {c: 17, n: "Ctrl"},
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VK_ALT: {c: 18, n: "Alt"},
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VK_COMMAND: {c: 224, n: "Cmd"},
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VK_SPACE: {c: 32, n: "Space"},
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VK_INSERT: {c: 45, n: "Ins"},
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VK_DELETE: {c: 46, n: "Del"},
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VK_HOME: {c: 36, n: "Home"},
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VK_END: {c: 35, n: "End"},
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VK_PAGE_UP: {c: 33, n: "PgUp"},
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VK_PAGE_DOWN: {c: 34, n: "PgDown"},
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VK_UP: {c: 38, n: "Up"},
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VK_DOWN: {c: 40, n: "Down"},
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VK_LEFT: {c: 37, n: "Left"},
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VK_RIGHT: {c: 39, n: "Right"},
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VK_NUM_LOCK: {c: 144, n: "Num"},
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VK_DIVIDE: {c: 111, n: "Num /"},
|
||
VK_MULTIPLY: {c: 106, n: "Num *"},
|
||
VK_SUBTRACT: {c: 109, n: "Num -"},
|
||
VK_ADD: {c: 107, n: "Num +"},
|
||
VK_DECIMAL: {c: 194, n: "Num ."},
|
||
VK_NUMPAD0: {c: 96, n: "Num 0"},
|
||
VK_NUMPAD1: {c: 97, n: "Num 1"},
|
||
VK_NUMPAD2: {c: 98, n: "Num 2"},
|
||
VK_NUMPAD3: {c: 99, n: "Num 3"},
|
||
VK_NUMPAD4: {c: 100, n: "Num 4"},
|
||
VK_NUMPAD5: {c: 101, n: "Num 5"},
|
||
VK_NUMPAD6: {c: 102, n: "Num 6"},
|
||
VK_NUMPAD7: {c: 103, n: "Num 7"},
|
||
VK_NUMPAD8: {c: 104, n: "Num 8"},
|
||
VK_NUMPAD9: {c: 105, n: "Num 9"},
|
||
VK_NUMPAD_CENTER: {c: 12, n: "Num Cntr"}
|
||
};
|
||
|
||
function _metakeyflags(e) {
|
||
return (e.shiftKey?KeyFlags.Shift:0) |
|
||
(e.ctrlKey?KeyFlags.Ctrl:0) |
|
||
(e.altKey?KeyFlags.Alt:0) |
|
||
(e.metaKey?KeyFlags.Meta:0);
|
||
}
|
||
|
||
type KeyMapFunction = (o:KeyMapEntry, key:number, code:number, flags:number) => void;
|
||
|
||
export function newKeyboardHandler(switches:number[]|Uint8Array, map:KeyCodeMap, func?:KeyMapFunction, alwaysfunc?:boolean) {
|
||
return (key:number,code:number,flags:number) => {
|
||
if (!map) {
|
||
func(null, key, code, flags);
|
||
return;
|
||
}
|
||
var o : KeyMapEntry = map[key];
|
||
if (!o) o = map[0];
|
||
if (func && (o || alwaysfunc)) {
|
||
func(o, key, code, flags);
|
||
}
|
||
if (o) {
|
||
//console.log(key,code,flags,o);
|
||
var mask = o.mask;
|
||
if (mask < 0) { // negative mask == active low
|
||
mask = -mask;
|
||
if (flags & (KeyFlags.KeyDown | KeyFlags.KeyUp))
|
||
flags ^= KeyFlags.KeyDown | KeyFlags.KeyUp;
|
||
}
|
||
if (flags & KeyFlags.KeyDown) {
|
||
switches[o.index] |= mask;
|
||
} else if (flags & KeyFlags.KeyUp) {
|
||
switches[o.index] &= ~mask;
|
||
}
|
||
}
|
||
};
|
||
}
|
||
|
||
export function setKeyboardFromMap(video:RasterVideo, switches:number[]|Uint8Array, map:KeyCodeMap, func?:KeyMapFunction, alwaysfunc?:boolean) {
|
||
var handler = newKeyboardHandler(switches, map, func, alwaysfunc);
|
||
video.setKeyboardEvents(handler);
|
||
return new ControllerPoller(handler);
|
||
}
|
||
|
||
export function makeKeycodeMap(table : [KeyDef,number,number][]) : KeyCodeMap {
|
||
var map = new Map<number,KeyMapEntry>();
|
||
for (var i=0; i<table.length; i++) {
|
||
var entry = table[i];
|
||
var val : KeyMapEntry = {index:entry[1], mask:entry[2], def:entry[0]};
|
||
map[entry[0].c] = val;
|
||
}
|
||
return map;
|
||
}
|
||
|
||
const DEFAULT_CONTROLLER_KEYS : KeyDef[] = [
|
||
Keys.UP, Keys.DOWN, Keys.LEFT, Keys.RIGHT, Keys.A, Keys.B, Keys.SELECT, Keys.START,
|
||
Keys.P2_UP, Keys.P2_DOWN, Keys.P2_LEFT, Keys.P2_RIGHT, Keys.P2_A, Keys.P2_B, Keys.P2_SELECT, Keys.P2_START,
|
||
];
|
||
|
||
export class ControllerPoller {
|
||
active = false;
|
||
handler;
|
||
state = new Int8Array(32);
|
||
lastState = new Int8Array(32);
|
||
AXIS0 = 24; // first joystick axis index
|
||
constructor(handler:(key,code,flags) => void) {
|
||
this.handler = handler;
|
||
window.addEventListener("gamepadconnected", (event) => {
|
||
console.log("Gamepad connected:", event);
|
||
this.active = typeof navigator.getGamepads === 'function';
|
||
});
|
||
window.addEventListener("gamepaddisconnected", (event) => {
|
||
console.log("Gamepad disconnected:", event);
|
||
});
|
||
}
|
||
poll() {
|
||
if (!this.active) return;
|
||
var gamepads = navigator.getGamepads();
|
||
for (var gpi=0; gpi<gamepads.length; gpi++) {
|
||
var gp = gamepads[gpi];
|
||
if (gp) {
|
||
for (var i=0; i<gp.axes.length; i++) {
|
||
var k = i + this.AXIS0;
|
||
this.state[k] = Math.round(gp.axes[i]);
|
||
if (this.state[k] != this.lastState[k]) {
|
||
this.handleStateChange(gpi,k);
|
||
}
|
||
}
|
||
for (var i=0; i<gp.buttons.length; i++) {
|
||
this.state[i] = gp.buttons[i].pressed ? 1 : 0;
|
||
if (this.state[i] != this.lastState[i]) {
|
||
this.handleStateChange(gpi,i);
|
||
}
|
||
}
|
||
this.lastState.set(this.state);
|
||
}
|
||
}
|
||
}
|
||
handleStateChange(gpi:number, k:number) {
|
||
var axis = k - this.AXIS0;
|
||
// TODO: this is slow
|
||
for (var def of DEFAULT_CONTROLLER_KEYS) {
|
||
// is this a gamepad entry? same player #?
|
||
if (def && def.plyr == gpi) {
|
||
var code = def.c;
|
||
var state = this.state[k];
|
||
var lastState = this.lastState[k];
|
||
// check for button/axis match
|
||
if (k == def.button || (axis == 0 && def.xaxis == state) || (axis == 1 && def.yaxis == state)) {
|
||
//console.log(gpi,k,state,entry);
|
||
if (state != 0) {
|
||
this.handler(code, 0, KeyFlags.KeyDown);
|
||
} else {
|
||
this.handler(code, 0, KeyFlags.KeyUp);
|
||
}
|
||
break;
|
||
}
|
||
// joystick released?
|
||
else if (state == 0 && (axis == 0 && def.xaxis == lastState) || (axis == 1 && def.yaxis == lastState)) {
|
||
this.handler(code, 0, KeyFlags.KeyUp);
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
export function padBytes(data:Uint8Array|number[], len:number, padstart?:boolean) : Uint8Array {
|
||
if (data.length > len) {
|
||
throw Error("Data too long, " + data.length + " > " + len);
|
||
}
|
||
var r = new RAM(len);
|
||
if (padstart)
|
||
r.mem.set(data, len-data.length);
|
||
else
|
||
r.mem.set(data);
|
||
return r.mem;
|
||
}
|
||
|
||
type AddressReadWriteFn = ((a:number) => number) | ((a:number,v:number) => void);
|
||
type AddressDecoderEntry = [number, number, number, AddressReadWriteFn];
|
||
type AddressDecoderOptions = {gmask?:number};
|
||
|
||
// TODO: better performance, check values
|
||
export function AddressDecoder(table : AddressDecoderEntry[], options?:AddressDecoderOptions) {
|
||
var self = this;
|
||
function makeFunction() {
|
||
var s = "";
|
||
if (options && options.gmask) {
|
||
s += "a&=" + options.gmask + ";";
|
||
}
|
||
for (var i=0; i<table.length; i++) {
|
||
var entry = table[i];
|
||
var start = entry[0]|0;
|
||
var end = entry[1]|0;
|
||
var mask = entry[2]|0;
|
||
var func = entry[3];
|
||
self['__fn'+i] = func;
|
||
s += "if (a>=" + start + " && a<="+end + "){";
|
||
if (mask) s += "a&="+mask+";";
|
||
s += "return this.__fn"+i+"(a,v)&0xff;}\n";
|
||
}
|
||
s += "return 0;"; // TODO: noise()?
|
||
return new Function('a', 'v', s);
|
||
}
|
||
return makeFunction().bind(self);
|
||
}
|
||
|
||
export function newAddressDecoder(table : AddressDecoderEntry[], options?:AddressDecoderOptions) : (a:number,v?:number) => number {
|
||
return new (AddressDecoder as any)(table, options);
|
||
}
|
||
|
||
|
||
// https://stackoverflow.com/questions/17130395/real-mouse-position-in-canvas
|
||
export function getMousePos(canvas : HTMLCanvasElement, evt) : {x:number,y:number} {
|
||
var rect = canvas.getBoundingClientRect(), // abs. size of element
|
||
scaleX = canvas.width / rect.width, // relationship bitmap vs. element for X
|
||
scaleY = canvas.height / rect.height; // relationship bitmap vs. element for Y
|
||
|
||
return {
|
||
x: (evt.clientX - rect.left) * scaleX, // scale mouse coordinates after they have
|
||
y: (evt.clientY - rect.top) * scaleY // been adjusted to be relative to element
|
||
}
|
||
}
|
||
|
||
///
|
||
|
||
// TODO: https://stackoverflow.com/questions/10463518/converting-em-to-px-in-javascript-and-getting-default-font-size
|
||
export function getVisibleEditorLineHeight() : number{
|
||
return $("#booksMenuButton").first().height();
|
||
}
|
||
|
||
export interface VirtualTextLine {
|
||
text : string;
|
||
clas? : string;
|
||
}
|
||
|
||
export class VirtualTextScroller {
|
||
memorylist;
|
||
maindiv : HTMLElement;
|
||
getLineAt : (row:number) => VirtualTextLine;
|
||
|
||
constructor(parent : HTMLElement) {
|
||
var div = document.createElement('div');
|
||
div.setAttribute("class", "memdump");
|
||
parent.appendChild(div);
|
||
this.maindiv = div;
|
||
}
|
||
|
||
create(workspace : HTMLElement, maxRowCount : number, fn : (row:number) => VirtualTextLine) {
|
||
this.getLineAt = fn;
|
||
this.memorylist = new VirtualList({
|
||
w: $(workspace).width(),
|
||
h: $(workspace).height(),
|
||
itemHeight: getVisibleEditorLineHeight(),
|
||
totalRows: maxRowCount, // TODO?
|
||
generatorFn: (row : number) => {
|
||
var line = fn(row);
|
||
var linediv = document.createElement("div");
|
||
linediv.appendChild(document.createTextNode(line.text));
|
||
if (line.clas != null) linediv.className = line.clas;
|
||
return linediv;
|
||
}
|
||
});
|
||
$(this.maindiv).append(this.memorylist.container);
|
||
}
|
||
|
||
// TODO: refactor with elsewhere
|
||
refresh() {
|
||
if (this.memorylist) {
|
||
$(this.maindiv).find('[data-index]').each( (i,e) => {
|
||
var div = e;
|
||
var row = parseInt(div.getAttribute('data-index'));
|
||
var oldtext = div.innerText;
|
||
var line = this.getLineAt(row);
|
||
var newtext = line.text;
|
||
if (oldtext != newtext) {
|
||
div.innerText = newtext;
|
||
if (line.clas != null && !div.classList.contains(line.clas)) {
|
||
var oldclasses = Array.from(div.classList);
|
||
oldclasses.forEach((c) => div.classList.remove(c));
|
||
div.classList.add('vrow');
|
||
div.classList.add(line.clas);
|
||
}
|
||
}
|
||
});
|
||
}
|
||
}
|
||
}
|
||
|
||
// https://forums.atariage.com/topic/107853-need-the-256-colors/page/2/
|
||
export function gtia_ntsc_to_rgb(val: number) {
|
||
const gamma = 0.9;
|
||
const bright = 1.1;
|
||
const color = 60;
|
||
let cr = (val >> 4) & 15;
|
||
let lm = val & 15;
|
||
let crlv = cr ? color : 0;
|
||
if (cr) lm += 1;
|
||
let phase = ((cr - 1) * 25 - 25) * (2 * Math.PI / 360);
|
||
let y = 256 * bright * Math.pow(lm / 16, gamma);
|
||
let i = crlv * Math.cos(phase);
|
||
let q = crlv * Math.sin(phase);
|
||
var r = y + 0.956 * i + 0.621 * q;
|
||
var g = y - 0.272 * i - 0.647 * q;
|
||
var b = y - 1.107 * i + 1.704 * q;
|
||
return RGBA(clamp(0,255,r), clamp(0,255,g), clamp(0,255,b));
|
||
}
|