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1348 lines (1263 loc) · 44.5 KB
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Jack Bitmap Editor</title>
<script type="text/javascript">
// constants
const STATE_KEY = "state";
const GRID_KEY = "grid";
// initializer global variables
var BINARY_BITS = 16;
var includeShift = true;
var columns = [0, 1, 2];
var grid = new Array(0);
var currentColor = null;
// load saved state from local storage
// using default values wherever necessary
var defaults = {
WIDTH: 48,
HEIGHT: 32,
PIXEL_SIZE: "16",
currentIShift: 0,
currentJShift: 0,
marginSaveFrames: 1,
baseI: 0,
baseJ: 0,
drawHeight: 0,
INVERT_MODE: false,
comments: true
};
var state = {};
try {
var savedState = localStorage.getItem(STATE_KEY);
if (savedState) {
var parsedState = JSON.parse(savedState);
state = Object.assign({}, defaults, parsedState);
} else {
state = defaults;
}
} catch (error) {
console.error("Error parsing state from localStorage. Using defaults.", error);
state = defaults;
}
// initialize global variables from state
var WIDTH = state.WIDTH;
var HEIGHT = state.HEIGHT;
var PIXEL_SIZE = state.PIXEL_SIZE;
var currentIShift = state.currentIShift;
var currentJShift = state.currentJShift;
var marginSaveFrames = state.marginSaveFrames;
var baseI = state.baseI;
var baseJ = state.baseJ;
var drawHeight = state.drawHeight;
var INVERT_MODE = state.INVERT_MODE;
var comments = state.comments;
function saveState() {
localStorage.setItem(
STATE_KEY,
JSON.stringify({
WIDTH,
HEIGHT,
PIXEL_SIZE,
currentIShift,
currentJShift,
marginSaveFrames,
baseI,
baseJ,
drawHeight,
INVERT_MODE,
comments,
}),
);
}
function saveGrid(grid) {
localStorage.setItem(GRID_KEY, JSON.stringify(grid));
}
function Reset() {
// resets state to the default values
WIDTH = 48;
HEIGHT = 32;
PIXEL_SIZE = "16";
currentIShift = 0;
currentJShift = 0;
marginSaveFrames = 1;
baseI = 0;
baseJ = 0;
drawHeight = 0;
INVERT_MODE = false;
comments = true;
saveState();
saveGrid(createGrid());
Init();
}
function syncInputsToState() {
// syncs the input fields to the current state
document.getElementById("inputWidth").value = WIDTH.toString();
document.getElementById("inputHeight").value = HEIGHT.toString();
document.getElementById("pixelSize").value = PIXEL_SIZE;
document.getElementById("marginSaveFrames").value = marginSaveFrames;
document.getElementById("invertMode").checked = INVERT_MODE;
document.getElementById("commentsOn").checked = comments;
// rotate button is only enabled if the canvas is square
document.getElementById("rotateButton").disabled = WIDTH != HEIGHT;
}
function pickColor(cell) {
var i = (cell.id / WIDTH) | 0;
var j = cell.id - i * WIDTH;
currentColor = !grid[i][j];
OnCellOver(cell);
}
function pauseEvent(e) {
if (e.stopPropagation) e.stopPropagation();
if (e.preventDefault) e.preventDefault();
e.cancelBubble = true;
e.returnValue = false;
return false;
}
function releaseColor() {
currentColor = null;
}
function Init() {
grid = InitGrid();
saveGrid(grid);
DisplayGrid();
syncInputsToState();
}
function onLoad() {
// attempt to initialize grid based on saved state; fall back to defaults if that fails
try {
Init();
} catch (error) {
console.log(error)
Reset();
}
}
function createGrid() {
var _grid = new Array(HEIGHT);
for (i = 0; i < HEIGHT; i++) {
_grid[i] = new Array(WIDTH);
for (j = 0; j < WIDTH; j++) {
_grid[i][j] = INVERT_MODE; // populate with current "empty" color
}
}
return _grid;
}
function InitGrid() {
const savedGrid = localStorage.getItem(GRID_KEY);
if (savedGrid) {
try {
return JSON.parse(savedGrid);
} catch {}
}
return createGrid();
}
function RotateBitmapRight() {
// for now, rotate only works for square canvas, and rotates the entire canvas by 90 degrees
if (HEIGHT != WIDTH) return;
var _grid = createGrid();
let side_length = HEIGHT;
for (i = 0; i < side_length; i++) {
for (j = 0; j < side_length; j++) {
_grid[j][side_length - 1 - i] = grid[i][j];
}
}
grid = _grid;
DisplayGrid();
// shifting effects becomes undesirable when rotated, so clear the shift
ResetShift();
}
function InvertBitmap() {
for (let i = 0; i < HEIGHT; i++) {
for (let j = 0; j < WIDTH; j++) {
grid[i][j] = !grid[i][j];
}
}
saveGrid(grid);
DisplayGrid();
}
function MirrorBitmap() {
var _grid = InitGrid();
for (i = 0; i < HEIGHT; i++) {
for (j = 0; j < WIDTH; j++) {
_grid[i][WIDTH - 1 - j] = grid[i][j];
}
}
grid = _grid;
saveGrid(grid);
DisplayGrid();
}
function ShiftLeft() {
currentJShift -= 1;
for (i = 0; i < HEIGHT; i++) {
for (j = 0; j < WIDTH; j++) {
// handle edge
if (j == WIDTH - 1) {
grid[i][j] = INVERT_MODE;
} else {
grid[i][j] = grid[i][j + 1];
}
}
}
saveState();
saveGrid(grid);
DisplayGrid();
}
function ShiftRight() {
_grid = InitGrid();
currentJShift += 1;
for (i = 0; i < HEIGHT; i++) {
for (j = 0; j < WIDTH; j++) {
// handle edge
if (j == 0) {
_grid[i][j] = INVERT_MODE;
} else {
_grid[i][j] = grid[i][j - 1];
}
}
}
grid = _grid;
saveState();
saveGrid(grid);
DisplayGrid();
}
function ShiftUp() {
currentIShift -= 1;
for (i = 0; i < HEIGHT; i++) {
for (j = 0; j < WIDTH; j++) {
// handle edge
if (i == HEIGHT - 1) {
grid[i][j] = INVERT_MODE;
} else {
grid[i][j] = grid[i + 1][j];
}
}
}
saveState();
saveGrid(grid);
DisplayGrid();
}
function ShiftDown() {
_grid = InitGrid();
currentIShift += 1;
for (i = 0; i < HEIGHT; i++) {
for (j = 0; j < WIDTH; j++) {
// handle edge
if (i == 0) {
_grid[i][j] = INVERT_MODE;
} else {
_grid[i][j] = grid[i - 1][j];
}
}
}
grid = _grid;
saveState();
saveGrid(grid);
DisplayGrid();
}
function DisplayGrid() {
var str = '<table id="canvas" border=1 cellspacing=0>';
var i, j, backgroundColor;
let font_style = "style='font-size:" + PIXEL_SIZE + "px' ";
for (i = -1; i < HEIGHT; i++) {
str = str + "<tr>";
for (j = -1; j < WIDTH; j++) {
if (i == -1 && j != -1) {
str = str + "<td " + font_style + ">" + (j + 1) + "</td>";
} else if (i != -1 && j == -1) {
str = str + "<td " + font_style + ">" + (i + 1) + "</td>";
} else if (i == -1 && j == -1) {
str = str + "<td/>";
} else {
if (grid[i][j] == true) backgroundColor = "black";
else backgroundColor = "white";
str =
str +
'<td onmousedown="pickColor(this); pauseEvent(event);" onmouseup="releaseColor(this); pauseEvent(event);" onmouseover="OnCellOver(this)" id=';
str = str + (i * WIDTH + j);
str =
str +
" width=" +
PIXEL_SIZE +
" height=" +
PIXEL_SIZE +
" bgcolor=" +
backgroundColor +
"></td>";
}
}
str = str + "</tr>";
}
str = str + "</table>";
gridElement = document.getElementById("grid");
gridElement.innerHTML = str;
GenerateCode();
}
function UpdateStyling() {
// add styling to signify the word edge interpretation
str = "<style>";
if (document.getElementById("obviousStyling").checked) {
red_width = "thick";
} else {
red_width = "thin";
}
for (const col of columns) {
str +=
"#grid table td:nth-child(" +
(col * 16 + baseJ + 2).toString() +
") {border-color: grey grey grey red; border-width:thin thin thin " +
red_width +
"}";
}
str += "</style";
document.getElementById("style_stuff").innerHTML = str;
}
function OnCellOver(cell) {
if (currentColor == null) {
return;
}
var i = (cell.id / WIDTH) | 0;
var j = cell.id - i * WIDTH;
grid[i][j] = currentColor;
if (grid[i][j]) cell.style.backgroundColor = "black";
else cell.style.backgroundColor = "white";
GenerateCode();
saveGrid(grid);
}
function GetColumns(leftJ, rightJ, baseJ) {
/*
Divides the line segment between leftJ and rightJ into divisions of width 16, making sure that baseJ is the start of one of those divisions,
then it returns those divisions, relative baseJ (and only returns divisions that contain at least part of the line segment)
so GetColumns(0, 5, 0) should return [0] since there is 1 division that starts 0*16 units away from baseJ=0
and GetColumns(0, 5, 3) should return [-1, 0] since baseJ enforces a split in the segment
and GetColumns(0, 5, 6) should return [-1] because the entire distance between leftJ and rightJ fits in the chunk that starts at baseJ + (-16*1)
*/
let leftmost = Math.min(0, -Math.ceil((baseJ - leftJ) / 16));
let rightmost = Math.max(0, Math.floor((rightJ - baseJ) / 16));
let columns = [];
for (let i = leftmost; i < rightmost + 1; i++) {
columns.push(i);
}
if (rightJ < baseJ || leftJ > baseJ + 16) {
columns.splice(columns.indexOf(0), 1);
}
return columns;
}
function GetUsedWords() {
// returns an object of {..., -1:[[i, j], [i2, j], [i3, j]...], 0:[i, j2], 1:[i, j3], ...} for which (i,j), (i, j+1), (i, j+2), ... (i,j+15) are the coordinates of a word that is to be included in the
// code for the bitmap and the keys (..., -1, 0, 1, ...) are the columns that the words are in
let words = {};
let this_col;
let leftJ = 0;
let rightJ = WIDTH - 1;
baseJ = 0;
let bottomI = HEIGHT - 1;
let topI = 0;
baseI = HEIGHT - 1;
// find drawing borders, unless the user wants the whole canvas to be included in the bitmap
if (!document.getElementById("fullCanvas").checked) {
let breaker = false;
for (let j = 0; j < WIDTH; j++) {
if (breaker) break;
for (let i = HEIGHT - 1; i >= 0; i--) {
if (grid[i][j] != INVERT_MODE) {
leftJ = j;
breaker = true;
break;
}
}
}
breaker = false;
for (let j = WIDTH - 1; j >= 0; j--) {
if (breaker) break;
for (let i = HEIGHT - 1; i >= 0; i--) {
if (grid[i][j] != INVERT_MODE) {
rightJ = j;
breaker = true;
break;
}
}
}
breaker = false;
for (let i = HEIGHT - 1; i >= 0; i--) {
if (breaker) break;
for (let j = 0; j < WIDTH; j++) {
if (grid[i][j] != INVERT_MODE) {
bottomI = i;
breaker = true;
break;
}
}
}
breaker = false;
for (let i = 0; i < HEIGHT; i++) {
if (breaker) break;
for (let j = 0; j < WIDTH; j++) {
if (grid[i][j] != INVERT_MODE) {
topI = i;
breaker = true;
break;
}
}
}
if (includeShift) {
// adjust base for shifting
baseJ = leftJ - currentJShift;
baseI = bottomI - currentIShift;
// extend rightJ and leftJ if necessary, to account for shift in drawing
rightJ = Math.max(rightJ, rightJ - currentJShift);
leftJ = Math.min(leftJ, leftJ - currentJShift);
} else {
baseJ = leftJ;
baseI = bottomI;
}
}
columns = GetColumns(leftJ, rightJ, baseJ);
let previousColumnIncludedIvalues = new Set();
for (const col of columns) {
this_col = [];
col_index = col * 16 + baseJ;
// Find all the words in this column that are used
// if fullCanvas, then use all the words from i=0 to i=HEIGHT-1
if (document.getElementById("fullCanvas").checked) {
for (i = 0; i < HEIGHT; i++) {
this_col.push([i, col_index]);
}
}
// if rectangular, use i=topI to i=bottomI for each column
else if (document.getElementById("enforceRectangular").checked) {
//maxI = Math.max(bottomI, baseI);
//minI = Math.min(topI, baseI);
for (
i = Math.min(topI, baseI), maxI = Math.max(bottomI, baseI);
i <= maxI;
i++
) {
if (i < 0 || i >= HEIGHT) continue; // ignore rows that are off the canvas and are outside of the contract
this_col.push([i, col_index]);
}
}
// if fit to drawing, for each column, find the i values that have stuff included and include currentIshift words of padding (if necessary) to each words
else {
// fit to drawing
let includedIvalues = new Set();
for (
i = Math.min(topI, baseI), maxI = Math.max(bottomI, baseI);
i <= maxI;
i++
) {
this_i_in = false;
if (i < 0 || i >= HEIGHT) continue; // ignore rows that are off the canvas and are outside of the contract
for (j = col_index; j < col_index + 16; j++) {
if (j >= 0 && j < WIDTH) {
if (grid[i][j] != INVERT_MODE) {
this_i_in = true;
break;
}
// add horizontal buffer if necessary (vertical buffer for this is added later).
// include this i if there was a pixel on in this word before marginFramesSave shifts happened
if (currentJShift > 0) {
// check the column to the right (starting from the left) only as far as shifting should be considered
for (
l = col_index + 16,
m = Math.min(currentJShift, marginSaveFrames) + l;
l < m;
l++
) {
if (l >= WIDTH) break;
if (grid[i][l] != INVERT_MODE) {
this_i_in = true;
break;
}
}
} else if (currentJShift < 0) {
// check the column to the left (starting from the right) only as far as shifting should be considered
for (
l = col_index - 1,
m = Math.max(currentJShift, -marginSaveFrames) + l;
l > m;
l--
) {
if (l < 0) break;
if (grid[i][l] != INVERT_MODE) {
this_i_in = true;
break;
}
}
}
}
}
if (this_i_in) {
includedIvalues.add(i);
// vertical shifting is weird, since it is never necessary (could just change location by a v*32,) so we
// assume that user does it for a reason and include the full vertical buffer always, not checking
// the marginFramesSave
// add the buffer region the number of rows as abs(currentIShift) in the direction of currentIShift
for (
m = Math.min(i, i - currentIShift),
n = Math.max(i, i - currentIShift);
m <= n;
m++
) {
if (m < 0 || m >= HEIGHT) continue; // ignore rows that are off the canvas and are outside of the contract
includedIvalues.add(m);
}
}
}
// add the coordinates for all the words in this column that are needed to be included
for (let item of includedIvalues) {
this_col.push([item, col_index]);
}
}
words[col.toString()] = this_col;
}
// set drawHeight for the use of other functions
drawHeight = Math.max(bottomI, baseI) - Math.min(topI, baseI);
saveState();
return words;
}
function GetRowsFromWordColumns(col_mapping) {
//// This is probably poor design and code from GetWordColumns should be factored
let rows = {};
let includedIvalues = new Set();
// get
for (let col in col_mapping) {
for (coordinates of col_mapping[col]) {
if (!includedIvalues.has(coordinates[0])) {
includedIvalues.add(coordinates[0]);
rows[coordinates[0].toString()] = [];
}
rows[coordinates[0].toString()].push({
coords: coordinates,
col: col,
});
}
}
return rows;
}
function GenerateCode(force = false) {
// Generates and displayes Jack/Hack code unless pauseCode is checked, though this can be overrided with force=true
if (document.getElementById("pauseCode").checked && !force) return;
let i, j;
let value;
colsOfWords = GetUsedWords();
let baseRow = 0;
if (document.getElementById("baseTopLeft").checked) {
baseRow = drawHeight;
}
generateCode = document.getElementById("generatedCode");
let subroutineName = document.getElementById("subroutineName").value;
if (document.getElementById("changeNameOnShift").checked) {
subroutineName =
subroutineName +
(Math.abs(currentJShift) / marginSaveFrames).toString();
}
if (document.getElementById("jackCode").checked) {
let subroutineType = "function";
if (document.getElementById("methodSubroutine").checked)
subroutineType = "method";
generateCode.value =
subroutineType +
" void " +
subroutineName +
"(int location) {\n\tvar int memAddress; \n\tlet memAddress = 16384+location;\n";
for (const col in colsOfWords) {
if (comments) {
generateCode.value =
generateCode.value + "\t// column " + col + "\n";
}
for (coordinates of colsOfWords[col]) {
let value = GetWordValue(coordinates[0], coordinates[1]);
generateCode.value =
generateCode.value +
GenerateJackCodeLine(
coordinates[0] - baseI + baseRow,
value,
parseInt(col),
);
}
}
generateCode.value = generateCode.value + "\treturn;\n}";
} else {
// hack assembly
rowsOfWords = GetRowsFromWordColumns(colsOfWords);
generateCode.value = "(" + subroutineName + ")\n";
if (comments) {
generateCode.value =
generateCode.value +
"\t// put bitmap location value in R12\n\t// put code return address in R13\n";
}
// initialization of addr
generateCode.value += "\t@SCREEN\n\tD=A\n\t@R12\n\tAD=D+M\n";
let dHoldsAddr = true;
let addrIncrement = 0;
let previousCoordinates = null;
let previousColumn = null;
for (const row in rowsOfWords) {
if (comments)
generateCode.value +=
"\t// row " + (parseInt(row) + 1).toString() + "\n"; // use row + 1 for the human friendly counting from 1
for (data of rowsOfWords[row]) {
col = data["col"];
coordinates = data["coords"];
let value = GetWordValue(coordinates[0], coordinates[1]);
if (previousCoordinates != null) {
addrIncrement =
(coordinates[0] - previousCoordinates[0]) * 32 +
(parseInt(col) - parseInt(previousColumn));
}
hackCode = GenerateHackAssemblyCode(
addrIncrement,
value,
dHoldsAddr,
);
dHoldsAddr = hackCode["dHoldsAddr"];
generateCode.value += hackCode["code"];
previousCoordinates = coordinates;
previousColumn = col;
}
}
if (comments) generateCode.value += "\t// return\n";
generateCode.value += "\t@R13\n\tA=M\n\tD;JMP\n";
}
// update styling in case boundaries changed
UpdateStyling();
saveState();
}
function GetWordValue(i, j) {
// given the coordinates i, j of the start of a 16 pixel series corresponding with a 16-bit integer in RAM, returns the base_10
// value that must be stored in the RAM. Interprets pixels that are off the canvas to false
let binary = "";
for (m = j, n = j + BINARY_BITS; m < n; m++) {
// see if the pixel is on the canvas. contract: no words are ever included that are entirely off canvas, so we only need to check m (j) values
if (m < 0 || m >= WIDTH) {
// off canvas pixels
if (INVERT_MODE) binary = "1" + binary;
else binary = "0" + binary;
} else {
if (grid[i][m]) binary = "1" + binary;
else binary = "0" + binary;
}
}
isNegative = false;
//if number is negative, get its one's complement
if (binary[0] == "1") {
isNegative = true;
oneComplement = "";
for (k = 0; k < BINARY_BITS; k++) {
/////
if (binary[k] == "1") oneComplement = oneComplement + "0";
else oneComplement = oneComplement + "1";
}
binary = oneComplement;
}
//calculate one's complement decimal value
let value = 0;
for (k = 0; k < BINARY_BITS; k++) {
////
value = value * 2;
if (binary[k] == "1") value = value + 1;
}
//two's complement value if it is a negative value
if (isNegative == true) value = -(value + 1);
return value;
}
function GenerateHackAssemblyCode(
addrIncrement,
pixels_value,
dHoldsAddr,
) {
// returns {code: str, dHoldsAddr: bool}
let str = "";
let c;
if (comments)
c = [
"// D holds previous addr",
"// D holds addr",
"// D holds addr",
"// A holds val",
"// D = addr + val",
"// A=addr + val - val = addr",
"// RAM[addr] = val",
"// RAM[addr]=-val",
];
else c = ["", "", "", "", "", "", "", ""];
if (!dHoldsAddr && addrIncrement > 2) str += "\tD=A " + c[0] + "\n";
// get new addr into D [and A]
if (addrIncrement === 1) str += "\tAD=A+1 " + c[1] + "\n";
else if (addrIncrement === 2) str += "\tAD=A+1\n AD=A+1 " + c[2] + "\n";
else if (addrIncrement != 0)
str += "\t@" + addrIncrement + "\n\tAD=D+A\n";
// put pixels_value into RAM[addr]
if (pixels_value === 1 || pixels_value === 0 || pixels_value === -1) {
str += "\tM=" + pixels_value.toString() + "\n";
return {
code: str,
dholdsAddr: true,
};
} else if (pixels_value === -32768) {
str +=
"\t@32767\n\tA=!A " +
c[3] +
"\n\tD=D+A " +
c[4] +
"\n\tA=D-A " +
c[5] +
"\n";
str += "\tM=D-A " + c[6] + "\n";
return {
code: str,
dholdsAddr: false,
};
} else if (pixels_value < 0) {
str +=
"\t@" +
(-pixels_value).toString() +
" " +
c[3] +
"\n\tD=D+A " +
c[4] +
"\n\tA=D-A " +
c[5] +
"\n";
str += "\tM=A-D " + c[7] + "\n"; // M=D-A becomes M=A-D
return {
code: str,
dholdsAddr: false,
};
} else {
str +=
"\t@" +
pixels_value.toString() +
" " +
c[3] +
"\n\tD=D+A " +
c[4] +
"\n\tA=D-A " +
c[5] +
"\n";
str += "\tM=D-A " + c[6] + "\n";
return {
code: str,
dholdsAddr: false,
};
}
}
function GenerateJackCodeLine(row, value, col) {
let mem_shift = row * 32 + col;
if (mem_shift > 0) mem_shift = " +" + mem_shift;
else if (mem_shift == 0) mem_shift = "";
else mem_shift = " " + mem_shift;
if (value == -32768) {
str = "\tdo Memory.poke(memAddress" + mem_shift + ", ~32767);\n";
} else {
str =
"\tdo Memory.poke(memAddress" + mem_shift + ", " + value + ");\n";
}
return str;
}
function ResetShift() {
currentIShift = 0;
currentJShift = 0;
saveState();
GenerateCode();
}
function ToggleInvertMode() {
INVERT_MODE = document.getElementById("invertMode").checked;
saveState();
GenerateCode();
}
function ToggleComments() {
comments = document.getElementById("commentsOn").checked;
saveState();
GenerateCode();
}
function isInteger(value) {
return /^\d+$/.test(value);
}
function SetSize() {
// sets the canvas width, height, and pixel size to the values specified by input fields as long as both fields contain integer values
var newWidth = document.getElementById("inputWidth").value;
var newHeight = document.getElementById("inputHeight").value;
var newPxSize = document.getElementById("pixelSize").value;
if (
isInteger(newWidth) &&
isInteger(newHeight) &&
isInteger(newPxSize)
) {
// set the new measurements, ensuring that width is a multiple of 16 (for the sake of fullCanvas mode)
WIDTH = Math.floor(parseInt(newWidth) / 16) * 16;
document.getElementById("inputWidth").value = newWidth.toString();
HEIGHT = parseInt(newHeight);
PIXEL_SIZE = parseInt(newPxSize);
var newGrid = createGrid();
// copy over current grid contents (as much as possible)
for (var i = 0; i < Math.min(HEIGHT, grid.length); i++) {
for (var j = 0; j < Math.min(WIDTH, grid[i].length); j++) {
newGrid[i][j] = grid[i][j];
}
}
saveGrid(newGrid);
saveState();
Init(); // init loads the new grid into grid
}
}
function ChangeName() {
if (document.getElementById("subroutineName").value == "")
document.getElementById("subroutineName").value = "draw";
GenerateCode(true);
}
function ChangeCodeType() {
if (document.getElementById("hackAssemblyCode").checked) {
document.getElementById("baseTopLeft").click();
document.getElementById("baseBottomLeft").disabled = true;
document.getElementById("codeTypeHeader").textContent =
"Generated Hack Assembly";
} else {
document.getElementById("baseBottomLeft").disabled = false;
document.getElementById("codeTypeHeader").textContent =
"Generated Jack Code";
}
GenerateCode();
}
function UpdateMarginType() {
if (document.getElementById("fitToDrawing").checked) {
document.getElementById("marginSaveFramestd").hidden = false;
marginSaveFrames = parseInt(
document.getElementById("marginSaveFrames").value,
);
if (marginSaveFrames < 1) {
marginSaveFrames = 1;
document.getElementById("marginSaveFrames").value = "1";
}
} else {
document.getElementById("marginSaveFramestd").hidden = true;
}
saveState();
GenerateCode();
}
</script>
</head>
<body onload="onLoad();">
<h1>Jack Bitmap Editor v2.9</h1>
<p>
See <a href="https://github.com/ErikUmble/JackBitmapEditor">here</a> for
updates, feature documentation, and contributions.
</p>
<p></p>
<table>
<thead>
<tr>
<th align="left">Bitmap</th>
<th align="left">
<span id="codeTypeHeader">Generated Jack Code</span>
</th>
</tr>
<div id="style_stuff"></div>
</thead>
<tr>
<td><div id="grid" /></td>
<td>
<textarea
id="generatedCode"
cols="50"
rows="48"
readonly="read-only"
></textarea>
</td>
</tr>
<tr>
<table>
<tr>
<td align="center">
<input
type="file"
id="inputImage"
accept=".bmp, .png, image/bmp, image/png"
style="display: none"
/>
<input
type="button"
value="Import Image"
title="Import BMP (24-bit) or PNG (black and white) file"
onclick="document.getElementById('inputImage').click();"
/>
</td>
<td align="center">
<input type="button" value="Shift left <" onclick="ShiftLeft()" />
</td>
<td align="center">
<input
type="button"
value="Shift right >"
onclick="ShiftRight()"
/>
</td>
<td align="center">
<input type="button" value="Shift up ^" onclick="ShiftUp()" />
</td>
<td align="center">
<input type="button" value="Shift down v" onclick="ShiftDown()" />
</td>
<td align="center">
<input
type="button"
value="Clear Shifting"
onclick="ResetShift()"
/>
</td>
<td> </td>
<td align="center">
<input
id="rotateButton"
type="button"
value="Rotate right"
onclick="RotateBitmapRight()"
/>
</td>
<td align="center">
<input
type="button"
value="Flip horizontally"
onclick="MirrorBitmap()"
/>
</td>
<td align="center">
<input type="button" value="Invert" onclick="InvertBitmap()" />
</td>
<td align="center">
<input
id="invertMode"
onclick="ToggleInvertMode()"
type="checkbox"
/><label for="invertMode">Inverted Mode</label>
</td>
<td> </td>
<td align="center">
<input
id="pauseCode"
onclick="GenerateCode()"
type="checkbox"
/><label for="pauseCode">Pause Code Generation</label>
</td>