2023-09-06 23:38:53 +00:00
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import 'package:dartterm/colors.dart';
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2023-09-06 03:11:15 +00:00
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import 'package:dartterm/cp437.dart';
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import 'package:dartterm/fonts.dart';
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import 'package:dartterm/terminal_painter.dart';
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import 'package:flutter/material.dart';
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class Terminal {
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2023-09-10 00:36:37 +00:00
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static const int width = 88;
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2023-09-06 23:45:34 +00:00
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static const int height = 50;
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2023-09-06 03:11:15 +00:00
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static const int nTiles = width * height;
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late List<Tile> tiles;
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Terminal() {
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tiles = [for (var i = 0; i < nTiles; i += 1) Tile.empty()];
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}
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CustomPaint toWidget(BuildContext context) {
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var scalingFactor = MediaQuery.devicePixelRatioOf(context);
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return CustomPaint(painter: TerminalCustomPainter(this, scalingFactor));
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}
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(int, int)? toXY(int i) {
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if (i < 0 || i > nTiles) {
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return null;
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}
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return (i % width, i ~/ width);
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}
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int? fromXY(int x, int y) {
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if (x < 0 || x >= width) {
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return null;
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}
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if (y < 0 || y >= height) {
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return null;
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}
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return x + y * width;
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}
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}
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2023-09-10 01:40:56 +00:00
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class Cursor {
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final Terminal t;
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int x, y;
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Color? _bg, _fg;
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Font font = Font.normal;
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// TODO: Clip
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Cursor({required this.t, required this.x, required this.y});
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void clear() {
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t.tiles = [for (var i = 0; i < nTiles; i += 1) Tile.empty()];
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}
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void putc(int c) {
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for (var dx = 0; dx < font.cellWidth; dx += 1) {
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for (var dy = 0; dy < font.cellHeight; dy += 1) {
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var i = t.fromXY(x + dx, y + dy);
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if (i != null) {
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final (sourceCx, sourceCy) = (
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(c % font.nCellsW) * font.cellWidth + dx,
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(c ~/ font.nCellsW) * font.cellHeight + dy
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);
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t.tiles[i].content = Content(font.imageName, sourceCx, sourceCy);
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final (bg, fg) = (_bg, _fg);
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if (bg != null) {
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t.tiles[i].bg = bg;
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}
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if (fg != null) {
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t.tiles[i].fg = fg;
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}
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}
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}
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}
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}
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void puts(String s) {
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var startX = x;
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for (final c in toCp437String(s)) {
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if (c == 10) {
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// newline
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x = startX;
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y += font.cellHeight;
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continue;
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}
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if (c == 13) {
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// carriage return
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x = startX;
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continue;
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}
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putc(c);
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x += font.cellWidth;
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}
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}
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Cursor fg(Color c) {
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_fg = c;
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return this;
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}
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Cursor bg(Color c) {
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_bg = c;
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return this;
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}
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Cursor small() {
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font = Font.small;
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return this;
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}
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Cursor normal() {
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font = Font.normal;
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return this;
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}
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Cursor big() {
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font = Font.big;
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return this;
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}
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}
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class Clip {}
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2023-09-06 03:11:15 +00:00
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class Tile {
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Content? content;
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Color bg;
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Color fg;
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Tile(this.content, this.bg, this.fg);
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2023-09-06 23:38:53 +00:00
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static Tile empty() => Tile(null, Palette.defaultBg, Palette.defaultFg);
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2023-09-06 03:11:15 +00:00
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}
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class Content {
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final String sourceImage;
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final int sourceCx;
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final int sourceCy;
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const Content(this.sourceImage, this.sourceCx, this.sourceCy);
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}
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// reexports
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2023-09-10 01:40:56 +00:00
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Terminal _terminal = Terminal();
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2023-09-06 03:11:15 +00:00
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const int width = Terminal.width;
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const int height = Terminal.height;
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const int nTiles = Terminal.nTiles;
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Widget toWidget(BuildContext context) {
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2023-09-10 01:40:56 +00:00
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return _terminal.toWidget(context);
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}
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void clear() {
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at(0, 0).clear();
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}
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Cursor at(int x, int y) {
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return Cursor(t: _terminal, x: x, y: y);
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2023-09-06 03:11:15 +00:00
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}
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