mirror of
https://github.com/whscullin/apple2js.git
synced 2024-01-12 14:14:38 +00:00
1154 lines
36 KiB
TypeScript
1154 lines
36 KiB
TypeScript
/* Copyright 2010-2019 Will Scullin <scullin@scullinsteel.com>
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation. No representations are made about the suitability of this
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* software for any purpose. It is provided "as is" without express or
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* implied warranty.
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*/
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import { byte, memory, MemoryPages, rom } from './types';
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import { allocMemPages } from './util';
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import {
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Color,
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GraphicsState,
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HiresPage,
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LoresPage,
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Region,
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VideoModes,
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VideoModesState,
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bank,
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pageNo
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} from './videomodes';
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let enhanced = false;
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let textMode = true;
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let mixedMode = false;
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let hiresMode = false;
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let pageMode: pageNo = 1;
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let _80colMode = false;
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let altCharMode = false;
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let an3 = false;
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let doubleHiresMode = false;
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let monoDHRMode = false;
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const colorDHRMode = false;
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let mixedDHRMode = false;
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let highColorHGRMode = false;
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let highColorTextMode = false;
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let oneSixtyMode = false;
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function dim(c: Color): Color {
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return [
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c[0] * 0.75 & 0xff,
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c[1] * 0.75 & 0xff,
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c[2] * 0.75 & 0xff
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];
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}
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function rowToBase(row: number) {
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const ab = (row >> 3) & 3;
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const cd = (row >> 1) & 0x3;
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const e = row & 1;
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return (cd << 8) | (e << 7) | (ab << 5) | (ab << 3);
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}
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// hires colors
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const orangeCol: Color = [255, 106, 60];
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const greenCol: Color = [20, 245, 60];
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const blueCol: Color = [20, 207, 253];
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const violetCol: Color = [255, 68, 253];
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const whiteCol: Color = [255, 255, 255];
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const blackCol: Color = [0, 0, 0];
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// lores colors
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const _colors: Color[] = [
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[0, 0, 0], // 0x0 black
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[227, 30, 96], // 0x1 deep red
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[96, 78, 189], // 0x2 dark blue
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[255, 68, 253], // 0x3 purple
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[0, 163, 96], // 0x4 dark green
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[156, 156, 156], // 0x5 dark gray
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[20, 207, 253], // 0x6 medium blue
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[208, 195, 255], // 0x7 light blue
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[96, 114, 3], // 0x8 brown
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[255, 106, 60], // 0x9 orange
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[156, 156, 156], // 0xa light gray
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[255, 160, 208], // 0xb pink
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[20, 245, 60], // 0xc green
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[208, 221, 141], // 0xd yellow
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[114, 255, 208], // 0xe aquamarine
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[255, 255, 255], // 0xf white
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];
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//
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const r4 = [
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0, // Black
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2, // Dark Blue
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4, // Dark Green
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6, // Medium Blue
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8, // Brown
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5, // Gray 1
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12, // Light Green
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14, // Aqua
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1, // Red
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3, // Purple
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10, // Gray 2
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7, // Pink
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9, // Orange
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11, // Light Blue
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13, // Yellow
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15 // White
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];
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const dcolors: Color[] = [
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[0, 0, 0], // 0x0 black
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[227, 30, 96], // 0x1 deep red
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[96, 78, 189], // 0x2 dark blue
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[255, 68, 253], // 0x3 purple
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[0, 163, 96], // 0x4 dark green
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[156, 156, 156], // 0x5 dark gray
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[20, 207, 253], // 0x6 medium blue
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[208, 195, 255], // 0x7 light blue
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[96, 114, 3], // 0x8 brown
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[255, 106, 60], // 0x9 orange
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[156, 156, 156], // 0xa light gray
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[255, 160, 208], // 0xb pink
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[20, 245, 60], // 0xc green
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[208, 221, 141], // 0xd yellow
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[114, 255, 208], // 0xe aquamarine
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[255, 255, 255], // 0xf white
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];
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const notDirty: Region = {
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top: 385,
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bottom: -1,
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left: 561,
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right: -1
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};
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/****************************************************************************
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*
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* Text/Lores Graphics
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*
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***************************************************************************/
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export class LoresPage2D implements LoresPage {
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// $00-$3F inverse
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// $40-$7F flashing
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// $80-$FF normal
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private _buffer: memory[] = [];
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private _refreshing = false;
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private _monoMode = false;
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private _blink = false;
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dirty: Region = {...notDirty}
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imageData: ImageData;
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constructor(private page: number,
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private readonly charset: rom,
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private readonly e: boolean) {
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this.imageData = new ImageData(560, 384);
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for (let idx = 0; idx < 560 * 384 * 4; idx++) {
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this.imageData.data[idx] = 0xff;
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}
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this._buffer[0] = allocMemPages(0x4);
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this._buffer[1] = allocMemPages(0x4);
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}
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_drawPixel(data: Uint8ClampedArray, off: number, color: Color) {
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const c0 = color[0], c1 = color[1], c2 = color[2];
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data[off + 0] = data[off + 4] = c0;
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data[off + 1] = data[off + 5] = c1;
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data[off + 2] = data[off + 6] = c2;
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const nextOff = off + 560 * 4;
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data[nextOff] = data[nextOff + 4] = c0;
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data[nextOff + 1] = data[nextOff + 5] = c1;
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data[nextOff + 2] = data[nextOff + 6] = c2;
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}
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_drawHalfPixel(data: Uint8ClampedArray, off: number, color: Color) {
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const c0 = color[0], c1 = color[1], c2 = color[2];
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data[off + 0] = c0;
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data[off + 1] = c1;
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data[off + 2] = c2;
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const nextOff = off + 560 * 4;
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data[nextOff] = c0;
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data[nextOff + 1] = c1;
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data[nextOff + 2] = c2;
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}
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bank0(): MemoryPages {
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return {
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start: () => this._start(),
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end: () => this._end(),
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read: (page, off) => this._read(page, off, 0),
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write: (page, off, val) => this._write(page, off, val, 0),
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};
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}
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bank1(): MemoryPages {
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return {
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start: () => this._start(),
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end: () => this._end(),
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read: (page, off) => this._read(page, off, 1),
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write: (page, off, val) => this._write(page, off, val, 1),
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};
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}
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// These are used by both bank 0 and 1
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_start() {
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return (0x04 * this.page);
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}
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_end() { return (0x04 * this.page) + 0x03; }
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_read(page: byte, off: byte, bank: bank) {
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const addr = (page << 8) | off, base = addr & 0x3FF;
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return this._buffer[bank][base];
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}
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_write(page: byte, off: byte, val: byte, bank: bank) {
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const addr = (page << 8) | off;
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const base = addr & 0x3FF;
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let fore, back;
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if (this._buffer[bank][base] == val && !this._refreshing) {
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return;
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}
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this._buffer[bank][base] = val;
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const col = (base % 0x80) % 0x28;
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const adj = off - col;
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// 000001cd eabab000 -> 000abcde
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const ab = (adj & 0x18);
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const cd = (page & 0x03) << 1;
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const ee = adj >> 7;
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const row = ab | cd | ee;
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const data = this.imageData.data;
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if ((row < 24) && (col < 40)) {
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let y = row << 4;
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if (y < this.dirty.top) { this.dirty.top = y; }
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y += 16;
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if (y > this.dirty.bottom) { this.dirty.bottom = y; }
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let x = col * 14;
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if (x < this.dirty.left) { this.dirty.left = x; }
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x += 14;
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if (x > this.dirty.right) { this.dirty.right = x; }
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let color;
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if (textMode || hiresMode || (mixedMode && row > 19)) {
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let inverse;
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if (this.e) {
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if (!_80colMode && !altCharMode) {
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inverse = ((val & 0xc0) == 0x40) && this._blink;
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}
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} else {
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inverse = !((val & 0x80) || (val & 0x40) && this._blink);
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}
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fore = inverse ? blackCol : whiteCol;
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back = inverse ? whiteCol : blackCol;
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if (_80colMode) {
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if (!enhanced) {
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val = (val >= 0x40 && val < 0x60) ? val - 0x40 : val;
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} else if (!altCharMode) {
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val = (val >= 0x40 && val < 0x80) ? val - 0x40 : val;
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}
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off = (col * 14 + (bank ? 0 : 1) * 7 + row * 560 * 8 * 2) * 4;
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for (let jdx = 0; jdx < 8; jdx++) {
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let b = this.charset[val * 8 + jdx];
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for (let idx = 0; idx < 7; idx++) {
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color = (b & 0x01) ? back : fore;
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this._drawHalfPixel(data, off, color);
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b >>= 1;
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off += 4;
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}
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off += 553 * 4 + 560 * 4;
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}
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} else {
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val = this._buffer[0][base];
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if (!enhanced) {
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val = (val >= 0x40 && val < 0x60) ? val - 0x40 : val;
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} else if (!altCharMode) {
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val = (val >= 0x40 && val < 0x80) ? val - 0x40 : val;
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}
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off = (col * 14 + row * 560 * 8 * 2) * 4;
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if (highColorTextMode) {
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fore = _colors[this._buffer[1][base] >> 4];
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back = _colors[this._buffer[1][base] & 0x0f];
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}
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if (this.e) {
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for (let jdx = 0; jdx < 8; jdx++) {
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let b = this.charset[val * 8 + jdx];
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for (let idx = 0; idx < 7; idx++) {
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color = (b & 0x01) ? back : fore;
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this._drawPixel(data, off, color);
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b >>= 1;
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off += 8;
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}
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off += 546 * 4 + 560 * 4;
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}
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} else {
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const colorMode = mixedMode && !textMode && !this._monoMode;
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// var val0 = col > 0 ? _buffer[0][base - 1] : 0;
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// var val2 = col < 39 ? _buffer[0][base + 1] : 0;
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for (let jdx = 0; jdx < 8; jdx++) {
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let odd = !(col & 0x1);
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let b = this.charset[val * 8 + jdx] << 1;
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if (colorMode) {
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// var b0 = charset[val0 * 8 + jdx];
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// var b2 = charset[val2 * 8 + jdx];
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if (inverse) { b ^= 0x1ff; }
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}
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for (let idx = 0; idx < 7; idx++) {
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if (colorMode) {
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if (b & 0x80) {
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if ((b & 0x1c0) != 0x80) {
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color = whiteCol;
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} else {
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color = odd ? violetCol : greenCol;
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}
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} else {
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color = blackCol;
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}
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odd = !odd;
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} else {
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color = (b & 0x80) ? fore : back;
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}
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this._drawPixel(data, off, color);
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b <<= 1;
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off += 8;
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}
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off += 546 * 4 + 560 * 4;
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}
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}
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}
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} else {
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if (!_80colMode && bank == 1) {
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return;
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}
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if (_80colMode && !an3) {
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off = (col * 14 + (bank ? 0 : 1) * 7 + row * 560 * 8 * 2) * 4;
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if (this._monoMode) {
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fore = whiteCol;
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back = blackCol;
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for (let jdx = 0; jdx < 8; jdx++) {
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let b = (jdx < 8) ? (val & 0x0f) : (val >> 4);
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b |= (b << 4);
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if (bank & 0x1) {
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b <<= 1;
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}
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for (let idx = 0; idx < 7; idx++) {
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color = (b & 0x80) ? fore : back;
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this._drawHalfPixel(data, off, color);
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b <<= 1;
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off += 4;
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}
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off += 553 * 4 + 560 * 4;
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}
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} else {
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if (bank & 0x1) {
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val = ((val & 0x77) << 1) | ((val & 0x88) >> 3);
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}
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for (let jdx = 0; jdx < 8; jdx++) {
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color = _colors[(jdx < 4) ?
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(val & 0x0f) : (val >> 4)];
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for (let idx = 0; idx < 7; idx++) {
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this._drawHalfPixel(data, off, color);
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off += 4;
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}
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off += 553 * 4 + 560 * 4;
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}
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}
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} else {
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off = (col * 14 + row * 560 * 8 * 2) * 4;
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if (this._monoMode) {
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fore = whiteCol;
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back = blackCol;
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for (let jdx = 0; jdx < 8; jdx++) {
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let b = (jdx < 4) ? (val & 0x0f) : (val >> 4);
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b |= (b << 4);
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b |= (b << 8);
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if (col & 0x1) {
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b <<= 2;
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}
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for (let idx = 0; idx < 14; idx++) {
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color = (b & 0x8000) ? fore : back;
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this._drawHalfPixel(data, off, color);
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b <<= 1;
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off += 4;
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}
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off += 546 * 4 + 560 * 4;
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}
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} else {
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for (let jdx = 0; jdx < 8; jdx++) {
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color = _colors[(jdx < 4) ? (val & 0x0f) : (val >> 4)];
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for (let idx = 0; idx < 7; idx++) {
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this._drawPixel(data, off, color);
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off += 8;
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}
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off += 546 * 4 + 560 * 4;
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}
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}
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}
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}
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}
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}
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refresh() {
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let addr = 0x400 * this.page;
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this._refreshing = true;
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for (let idx = 0; idx < 0x400; idx++, addr++) {
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this._write(addr >> 8, addr & 0xff, this._buffer[0][idx], 0);
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if (_80colMode) {
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this._write(addr >> 8, addr & 0xff, this._buffer[1][idx], 1);
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}
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}
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this._refreshing = false;
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}
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blink() {
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let addr = 0x400 * this.page;
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this._refreshing = true;
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this._blink = !this._blink;
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for (let idx = 0; idx < 0x400; idx++, addr++) {
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const b = this._buffer[0][idx];
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if ((b & 0xC0) == 0x40) {
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this._write(addr >> 8, addr & 0xff, this._buffer[0][idx], 0);
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}
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}
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this._refreshing = false;
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}
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mono(on: boolean) {
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this._monoMode = on;
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this.refresh();
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}
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start() {
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setInterval(() => this.blink(), 267);
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return this._start();
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}
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end() {
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return this._end();
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}
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read(page: byte, off: byte) {
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return this._read(page, off, 0);
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}
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write(page: byte, off: byte, val: byte) {
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return this._write(page, off, val, 0);
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}
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getState(): GraphicsState {
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return {
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page: this.page,
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mono: this._monoMode,
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buffer: [
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new Uint8Array(this._buffer[0]),
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new Uint8Array(this._buffer[1]),
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]
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};
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}
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setState(state: GraphicsState) {
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this.page = state.page;
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this._monoMode = state.mono;
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this._buffer[0] = new Uint8Array(state.buffer[0]);
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this._buffer[1] = new Uint8Array(state.buffer[1]);
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this.refresh();
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}
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private mapCharCode(charCode: byte) {
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charCode &= 0x7F;
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if (charCode < 0x20) {
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charCode += 0x40;
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}
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if (!this.e && (charCode >= 0x60)) {
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charCode -= 0x40;
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}
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return charCode;
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}
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getText() {
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let buffer = '', line, charCode;
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let row, col, base;
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for (row = 0; row < 24; row++) {
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base = rowToBase(row);
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line = '';
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if (this.e && _80colMode) {
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for (col = 0; col < 80; col++) {
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charCode = this.mapCharCode(this._buffer[1 - col % 2][base + Math.floor(col / 2)]);
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line += String.fromCharCode(charCode);
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}
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} else {
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for (col = 0; col < 40; col++) {
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charCode = this.mapCharCode(this._buffer[0][base + col]);
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line += String.fromCharCode(charCode);
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}
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}
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line = line.trimRight();
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buffer += line + '\n';
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}
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return buffer;
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}
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}
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/****************************************************************************
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*
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* Hires Graphics
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*
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***************************************************************************/
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export class HiresPage2D implements HiresPage {
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public imageData: ImageData;
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dirty: Region = {...notDirty}
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private _buffer: memory[] = [];
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private _refreshing = false;
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private _monoMode = false;
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constructor(
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private page: number) {
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this.imageData = new ImageData(560, 384);
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for (let idx = 0; idx < 560 * 384 * 4; idx++) {
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this.imageData.data[idx] = 0xff;
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}
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this._buffer[0] = allocMemPages(0x20);
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this._buffer[1] = allocMemPages(0x20);
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}
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_drawPixel(data: Uint8ClampedArray, off: number, color: Color) {
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const c0 = color[0], c1 = color[1], c2 = color[2];
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data[off + 0] = data[off + 4] = c0;
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data[off + 1] = data[off + 5] = c1;
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data[off + 2] = data[off + 6] = c2;
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const nextOff = off + 560 * 4;
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data[nextOff] = data[nextOff + 4] = c0;
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data[nextOff + 1] = data[nextOff + 5] = c1;
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data[nextOff + 2] = data[nextOff + 6] = c2;
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}
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_drawHalfPixel(data: Uint8ClampedArray, off: number, color: Color) {
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const c0 = color[0], c1 = color[1], c2 = color[2];
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data[off + 0] = c0;
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data[off + 1] = c1;
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data[off + 2] = c2;
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const nextOff = off + 560 * 4;
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data[nextOff] = c0;
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data[nextOff + 1] = c1;
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data[nextOff + 2] = c2;
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}
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//
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// 160x192 pixels alternate 3 and 4 base pixels wide
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//
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_draw3Pixel(data: Uint8ClampedArray, off: number, color: Color) {
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const c0 = color[0], c1 = color[1], c2 = color[2];
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data[off + 0] = data[off + 4] = data[off + 8] = c0;
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data[off + 1] = data[off + 5] = data[off + 9] = c1;
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data[off + 2] = data[off + 6] = data[off + 10] = c2;
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const nextOff = off + 560 * 4;
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data[nextOff] = data[nextOff + 4] = data[nextOff + 8] = c0;
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data[nextOff + 1] = data[nextOff + 5] = data[nextOff + 9] = c1;
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data[nextOff + 2] = data[nextOff + 6] = data[nextOff + 10] = c2;
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}
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_draw4Pixel(data: Uint8ClampedArray, off: number, color: Color) {
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const c0 = color[0], c1 = color[1], c2 = color[2];
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data[off + 0] = data[off + 4] = data[off + 8] = data[off + 12] = c0;
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data[off + 1] = data[off + 5] = data[off + 9] = data[off + 13] = c1;
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data[off + 2] = data[off + 6] = data[off + 10] = data[off + 14] = c2;
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const nextOff = off + 560 * 4;
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data[nextOff] = data[nextOff + 4] = data[nextOff + 8] = data[nextOff + 12] = c0;
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data[nextOff + 1] = data[nextOff + 5] = data[nextOff + 9] = data[nextOff + 13] = c1;
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data[nextOff + 2] = data[nextOff + 6] = data[nextOff + 10] = data[nextOff + 14] = c2;
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}
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bank0(): MemoryPages {
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return {
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start: () => this._start(),
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end: () => this._end(),
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read: (page, off) => this._read(page, off, 0),
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write: (page, off, val) => this._write(page, off, val, 0),
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};
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}
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bank1(): MemoryPages {
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return {
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start: () => this._start(),
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end: () => this._end(),
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read: (page, off) => this._read(page, off, 1),
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write: (page, off, val) => this._write(page, off, val, 1),
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};
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}
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_start() { return (0x20 * this.page); }
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_end() { return (0x020 * this.page) + 0x1f; }
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_read(page: byte, off: byte, bank: bank) {
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const addr = (page << 8) | off, base = addr & 0x1FFF;
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return this._buffer[bank][base];
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}
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_write(page: byte, off: byte, val: byte, bank: bank) {
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const addr = (page << 8) | off;
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const base = addr & 0x1FFF;
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if (this._buffer[bank][base] == val && !this._refreshing) {
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return;
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}
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this._buffer[bank][base] = val;
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let hbs = val & 0x80;
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const col = (base % 0x80) % 0x28;
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const adj = off - col;
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// 000001cd eabab000 -> 000abcde
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const ab = (adj & 0x18);
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const cd = (page & 0x03) << 1;
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const e = adj >> 7;
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const rowa = ab | cd | e,
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rowb = base >> 10;
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const data = this.imageData.data;
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let dx, dy;
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if ((rowa < 24) && (col < 40)) {
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if (!hiresMode) {
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return;
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}
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let y = rowa << 4 | rowb << 1;
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if (y < this.dirty.top) { this.dirty.top = y; }
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y += 2;
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if (y > this.dirty.bottom) { this.dirty.bottom = y; }
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let x = col * 14 - 2;
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if (x < this.dirty.left) { this.dirty.left = x; }
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x += 18;
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if (x > this.dirty.right) { this.dirty.right = x; }
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dy = rowa << 4 | rowb << 1;
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let bz, b0, b1, b2, b3, b4, c, hb;
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if (oneSixtyMode && !this._monoMode) {
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// 1 byte = two pixels, but 3:4 ratio
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const c3 = val & 0xf;
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const c4 = val >> 4;
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dx = col * 2 + (bank ^ 1);
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off = dx * 28 + dy * 280 * 4 * 2;
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this._draw3Pixel(data, off, dcolors[c3]);
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this._draw4Pixel(data, off + 12, dcolors[c4]);
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} else if (doubleHiresMode) {
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val &= 0x7f;
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// Every 4 bytes is 7 pixels
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// 2 bytes per bank
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// b0 b1 b2 b3
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// c0 c1 c2 c3 c4 c5 c6
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// 76543210 76543210 76543210 76543210
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// 1111222 2333344 4455556 6667777
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const mod = col % 2, mcol = col - mod, baseOff = base - mod;
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bz = this._buffer[0][baseOff - 1];
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b0 = this._buffer[1][baseOff];
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b1 = this._buffer[0][baseOff];
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b2 = this._buffer[1][baseOff + 1];
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b3 = this._buffer[0][baseOff + 1];
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b4 = this._buffer[1][baseOff + 2];
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c = [
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0,
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((b0 & 0x0f) >> 0), // 0
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((b0 & 0x70) >> 4) | ((b1 & 0x01) << 3), // 1
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((b1 & 0x1e) >> 1), // 2
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((b1 & 0x60) >> 5) | ((b2 & 0x03) << 2), // 3
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((b2 & 0x3c) >> 2), // 4
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((b2 & 0x40) >> 6) | ((b3 & 0x07) << 1), // 5
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((b3 & 0x78) >> 3), // 6
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0
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], // 7
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hb = [
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0,
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b0 & 0x80, // 0
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b0 & 0x80, // 1
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b1 & 0x80, // 2
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b2 & 0x80, // 3
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b2 & 0x80, // 4
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b3 & 0x80, // 5
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b3 & 0x80, // 6
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0
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]; // 7
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if (col > 0) {
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c[0] = (bz & 0x78) >> 3;
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hb[0] = bz & 0x80;
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}
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if (col < 39) {
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c[8] = b4 & 0x0f;
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hb[8] = b4 & 0x80;
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}
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dx = mcol * 14;
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off = dx * 4 + dy * 280 * 4 * 2;
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let monoColor = null;
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if (this._monoMode || monoDHRMode) {
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monoColor = whiteCol;
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}
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for (let idx = 1; idx < 8; idx++) {
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hbs = hb[idx];
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const dcolor = dcolors[r4[c[idx]]];
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let bits = c[idx - 1] | (c[idx] << 4) | (c[idx + 1] << 8);
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for (let jdx = 0; jdx < 4; jdx++, off += 4) {
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if (monoColor) {
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if (bits & 0x10) {
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this._drawHalfPixel(data, off, monoColor);
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} else {
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this._drawHalfPixel(data, off, blackCol);
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}
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} else if (mixedDHRMode) {
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if (hbs) {
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this._drawHalfPixel(data, off, dcolor);
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} else {
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if (bits & 0x10) {
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this._drawHalfPixel(data, off, whiteCol);
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} else {
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this._drawHalfPixel(data, off, blackCol);
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}
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}
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} else if (colorDHRMode) {
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this._drawHalfPixel(data, off, dcolor);
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} else if (
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((c[idx] != c[idx - 1]) && (c[idx] != c[idx + 1])) &&
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(((bits & 0x1c) == 0x1c) ||
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((bits & 0x70) == 0x70) ||
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((bits & 0x38) == 0x38))
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) {
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this._drawHalfPixel(data, off, whiteCol);
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} else if (
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(bits & 0x38) ||
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(c[idx] == c[idx + 1]) ||
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(c[idx] == c[idx - 1])
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) {
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this._drawHalfPixel(data, off, dcolor);
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} else if (bits & 0x28) {
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this._drawHalfPixel(data, off, dim(dcolor));
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} else {
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this._drawHalfPixel(data, off, blackCol);
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}
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bits >>= 1;
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}
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}
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if (!this._refreshing) {
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this._refreshing = true;
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const bb: bank = bank ? 0 : 1;
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for (let rr = addr - 1; rr <= addr + 1; rr++) {
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const vv = this._read(rr >> 8, rr & 0xff, bb);
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this._write(rr >> 8, rr & 0xff, vv, bb);
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}
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this._refreshing = false;
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}
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} else {
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val = this._buffer[0][base];
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hbs = val & 0x80;
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val &= 0x7f;
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dx = col * 14 - 2;
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b0 = col > 0 ? this._buffer[0][base - 1] : 0;
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b2 = col < 39 ? this._buffer[0][base + 1] : 0;
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val |= (b2 & 0x3) << 7;
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let v0 = b0 & 0x20, v1 = b0 & 0x40, v2 = val & 0x1,
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odd = !(col & 0x1),
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color;
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const oddCol = (hbs ? orangeCol : greenCol);
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const evenCol = (hbs ? blueCol : violetCol);
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off = dx * 4 + dy * 280 * 4 * 2;
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const monoColor = this._monoMode ? whiteCol : null;
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for (let idx = 0; idx < 9; idx++, off += 8) {
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val >>= 1;
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if (v1) {
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if (monoColor) {
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color = monoColor;
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} else if (highColorHGRMode) {
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color = dcolors[this._buffer[1][base] >> 4];
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} else if (v0 || v2) {
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color = whiteCol;
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} else {
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color = odd ? oddCol : evenCol;
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}
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} else {
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if (monoColor) {
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color = blackCol;
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} else if (highColorHGRMode) {
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color = dcolors[this._buffer[1][base] & 0x0f];
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} else if (odd && v2 && v0) {
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color = v0 ? dim(evenCol) : evenCol;
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} else if (!odd && v0 && v2) {
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color = v2 ? dim(oddCol) : oddCol;
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} else {
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color = blackCol;
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}
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}
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if (dx > -1 && dx < 560) {
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this._drawPixel(data, off, color);
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}
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dx += 2;
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v0 = v1;
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v1 = v2;
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v2 = val & 0x01;
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odd = !odd;
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}
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}
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}
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}
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refresh() {
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let addr = 0x2000 * this.page;
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this._refreshing = true;
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for (let idx = 0; idx < 0x2000; idx++, addr++) {
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const page = addr >> 8;
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const off = addr & 0xff;
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this._write(page, off, this._buffer[0][idx], 0);
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if (_80colMode) {
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this._write(page, off, this._buffer[1][idx], 1);
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}
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}
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this._refreshing = false;
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}
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mono(on: boolean) {
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this._monoMode = on;
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this.refresh();
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}
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start() {
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return this._start();
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}
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end() {
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return this._end();
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}
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read(page: byte, off: byte) {
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return this._read(page, off, 0);
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}
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write(page: byte, off: byte, val: byte) {
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return this._write(page, off, val, 0);
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}
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getState(): GraphicsState {
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return {
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page: this.page,
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mono: this._monoMode,
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buffer: [
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new Uint8Array(this._buffer[0]),
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new Uint8Array(this._buffer[1]),
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]
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};
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}
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setState(state: GraphicsState) {
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this.page = state.page;
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this._monoMode = state.mono;
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this._buffer[0] = new Uint8Array(state.buffer[0]);
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this._buffer[1] = new Uint8Array(state.buffer[1]);
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this.refresh();
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}
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}
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export class VideoModes2D implements VideoModes {
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private _grs: LoresPage[];
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private _hgrs: HiresPage[];
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private _flag = 0;
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private _context: CanvasRenderingContext2D | null;
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private _left: number;
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private _top: number;
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public ready = Promise.resolve();
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constructor(
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gr: LoresPage,
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hgr: HiresPage,
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gr2: LoresPage,
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hgr2: HiresPage,
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private canvas: HTMLCanvasElement,
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private e: boolean) {
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this._grs = [gr, gr2];
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this._hgrs = [hgr, hgr2];
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this._context = this.canvas.getContext('2d');
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this._left = (this.canvas.width - 560) / 2;
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this._top = (this.canvas.height - 384) / 2;
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}
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private _refresh() {
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highColorTextMode = !an3 && textMode && !_80colMode;
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highColorHGRMode = !an3 && hiresMode && !_80colMode;
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doubleHiresMode = !an3 && hiresMode && _80colMode;
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oneSixtyMode = this._flag == 1 && doubleHiresMode;
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mixedDHRMode = this._flag == 2 && doubleHiresMode;
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monoDHRMode = this._flag == 3 && doubleHiresMode;
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this._grs[0].refresh();
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this._grs[1].refresh();
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this._hgrs[0].refresh();
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this._hgrs[1].refresh();
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}
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refresh() {
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this._refresh();
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}
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reset() {
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textMode = true;
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mixedMode = false;
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hiresMode = true;
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pageMode = 1;
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_80colMode = false;
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altCharMode = false;
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this._flag = 0;
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an3 = true;
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this._refresh();
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}
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text(on: boolean) {
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const old = textMode;
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textMode = on;
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this._flag = 0;
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if (old != on) {
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this._refresh();
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}
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}
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_80col(on: boolean) {
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if (!this.e) { return; }
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const old = _80colMode;
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_80colMode = on;
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if (old != on) {
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this._refresh();
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}
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}
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altchar(on: boolean) {
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if (!this.e) { return; }
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const old = altCharMode;
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altCharMode = on;
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if (old != on) {
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this._refresh();
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}
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}
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hires(on: boolean) {
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const old = hiresMode;
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hiresMode = on;
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this._flag = 0;
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if (old != on) {
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this._refresh();
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}
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}
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an3(on: boolean) {
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if (!this.e) { return; }
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const old = an3;
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an3 = on;
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if (on) {
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this._flag = ((this._flag << 1) | (_80colMode ? 0x0 : 0x1)) & 0x3;
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}
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if (old != on) {
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this._refresh();
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}
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}
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doubleHires(on: boolean) {
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this.an3(!on);
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}
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mixed(on: boolean) {
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const old = mixedMode;
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mixedMode = on;
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if (old != on) {
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this._refresh();
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}
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}
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page(pageNo: pageNo) {
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const old = pageMode;
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pageMode = pageNo;
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if (old != pageNo) {
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this._refresh();
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}
|
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}
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enhanced(on: boolean) {
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enhanced = on;
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}
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isText() {
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return textMode;
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}
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isMixed() {
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return mixedMode;
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}
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isPage2() {
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return pageMode == 2;
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}
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isHires() {
|
|
return hiresMode;
|
|
}
|
|
|
|
isDoubleHires() {
|
|
return doubleHiresMode;
|
|
}
|
|
|
|
is80Col() {
|
|
return _80colMode;
|
|
}
|
|
|
|
isAltChar() {
|
|
return altCharMode;
|
|
}
|
|
|
|
updateImage(
|
|
mainData: ImageData,
|
|
mainDirty: Region,
|
|
mixData?: ImageData | null,
|
|
mixDirty?: Region | null
|
|
) {
|
|
if (!this._context) {
|
|
throw new Error('No 2D context');
|
|
}
|
|
if (mainDirty.bottom !== -1 || (mixDirty && mixDirty.bottom !== -1)) {
|
|
if (mixData) {
|
|
this._context.putImageData(
|
|
mainData, this._left, this._top, 0, 0, 560, 320
|
|
);
|
|
this._context.putImageData(
|
|
mixData, this._left, this._top, 0, 320, 560, 64
|
|
);
|
|
} else {
|
|
this._context.putImageData(mainData, this._top, this._left);
|
|
}
|
|
return true;
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
blit(altData?: ImageData) {
|
|
let blitted = false;
|
|
const hgr = this._hgrs[pageMode - 1];
|
|
const gr = this._grs[pageMode - 1];
|
|
|
|
if (altData) {
|
|
blitted = this.updateImage(
|
|
altData,
|
|
{top: 0, left: 0, right: 560, bottom: 384}
|
|
);
|
|
} else if (hiresMode && !textMode) {
|
|
blitted = this.updateImage(
|
|
hgr.imageData,
|
|
hgr.dirty,
|
|
mixedMode ? gr.imageData : null,
|
|
mixedMode ? gr.dirty : null
|
|
);
|
|
} else {
|
|
blitted = this.updateImage(
|
|
gr.imageData, gr.dirty
|
|
);
|
|
}
|
|
hgr.dirty = {...notDirty};
|
|
gr.dirty = {...notDirty};
|
|
return blitted;
|
|
}
|
|
|
|
getState() {
|
|
return {
|
|
grs: [this._grs[0].getState(), this._grs[1].getState()],
|
|
hgrs: [this._hgrs[0].getState(), this._hgrs[1].getState()],
|
|
textMode: textMode,
|
|
mixedMode: mixedMode,
|
|
hiresMode: hiresMode,
|
|
pageMode: pageMode,
|
|
_80colMode: _80colMode,
|
|
altCharMode: altCharMode,
|
|
an3: an3
|
|
} as VideoModesState;
|
|
}
|
|
|
|
setState(state: VideoModesState) {
|
|
textMode = state.textMode;
|
|
mixedMode = state.mixedMode;
|
|
hiresMode = state.hiresMode;
|
|
pageMode = state.pageMode;
|
|
_80colMode = state._80colMode;
|
|
altCharMode = state.altCharMode;
|
|
an3 = state.an3;
|
|
|
|
this._grs[0].setState(state.grs[0]);
|
|
this._grs[1].setState(state.grs[1]);
|
|
this._hgrs[0].setState(state.hgrs[0]);
|
|
this._hgrs[1].setState(state.hgrs[1]);
|
|
}
|
|
|
|
mono(on: boolean) {
|
|
this._grs[0].mono(on);
|
|
this._grs[1].mono(on);
|
|
this._hgrs[0].mono(on);
|
|
this._hgrs[1].mono(on);
|
|
}
|
|
|
|
getText() {
|
|
return this._grs[pageMode - 1].getText();
|
|
}
|
|
}
|