486 lines
13 KiB
JavaScript
486 lines
13 KiB
JavaScript
"use strict";
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function PixelEditor(parentDiv, fmt, palette, initialData, thumbnails) {
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var self = this;
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var width = fmt.w;
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var height = fmt.h;
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function createCanvas(parent) {
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var c = document.createElement('canvas');
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c.width = width;
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c.height = height;
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if (fmt.xform) c.style.transform = fmt.xform;
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c.classList.add("pixels");
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c.classList.add("pixelated");
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//canvas.tabIndex = "-1"; // Make it focusable
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$(parentDiv).empty().append(c);
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return c;
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}
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function updateImage() {
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ctx.putImageData(pixdata, 0, 0);
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}
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function commit() {
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if (!thumbnails) return;
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for (var i=0; i<thumbnails.length; i++) {
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thumbnails[i].copyImageFrom(self);
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}
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initialData.set(self.getImageColors());
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}
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this.copyImageFrom = function(src) {
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pixints.set(src.getImageData());
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updateImage();
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}
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this.getImageData = function() { return pixints.slice(0); }
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function fitCanvas() {
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var w = $(parentDiv).width();
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var h = $(parentDiv).height();
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if (h > w)
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pixcanvas.style.height = Math.floor(h)+"px";
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else
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pixcanvas.style.height = Math.floor(h/2)+"px";
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// TODO
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}
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this.resize = fitCanvas;
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var pixcanvas = createCanvas();
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var ctx = pixcanvas.getContext('2d');
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var pixdata = ctx.createImageData(width, height);
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var pixints = new Uint32Array(pixdata.data.buffer);
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for (var i=0; i<pixints.length; i++) {
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pixints[i] = initialData ? palette[initialData[i]] : palette[0];
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}
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updateImage();
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function revrgb(x) {
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var y = 0;
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y |= ((x >> 0) & 0xff) << 16;
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y |= ((x >> 8) & 0xff) << 8;
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y |= ((x >> 16) & 0xff) << 0;
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return y;
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}
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this.createPaletteButtons = function() {
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var span = $("#palette_group").empty();
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for (var i=0; i<palette.length; i++) {
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var btn = $('<button class="palbtn">');
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var rgb = palette[i] & 0xffffff;
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var color = "#" + hex(revrgb(rgb), 6);
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btn.click(self.setCurrentColor.bind(this, i));
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btn.attr('id', 'palcol_' + i);
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btn.css('backgroundColor', color).text(i.toString(16));
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if ((rgb & 0x808080) != 0x808080) { btn.css('color', 'white'); }
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span.append(btn);
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}
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self.setCurrentColor(1);
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}
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function getPixelByOffset(ofs) {
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var oldrgba = pixints[ofs] & 0xffffff;
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for (var i=0; i<palette.length; i++) {
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if (oldrgba == (palette[i] & 0xffffff)) return i;
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}
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return 0;
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}
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function getPixel(x, y) {
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var ofs = x+y*width;
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return getPixelByOffset(ofs);
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}
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function setPixel(x, y, col) {
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if (x < 0 || x >= width || y < 0 || y >= height) return;
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var ofs = x+y*width;
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var oldrgba = pixints[ofs];
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var rgba = palette[col];
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if (oldrgba != rgba) {
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pixints[ofs] = rgba;
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updateImage();
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}
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}
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this.getImageColors = function() {
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var pixcols = new Uint8Array(pixints.length);
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for (var i=0; i<pixints.length; i++)
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pixcols[i] = getPixelByOffset(i);
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return pixcols;
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}
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///
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this.makeEditable = function() {
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var curpalcol = -1;
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setCurrentColor(1);
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function getPositionFromEvent(e) {
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var x = Math.floor(e.offsetX * width / pxls.width());
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var y = Math.floor(e.offsetY * height / pxls.height());
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return {x:x, y:y};
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}
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function setCurrentColor(col) {
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if (curpalcol != col) {
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if (curpalcol >= 0)
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$("#palcol_" + curpalcol).removeClass('selected');
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curpalcol = col;
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$("#palcol_" + col).addClass('selected');
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}
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}
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self.setCurrentColor = setCurrentColor;
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var dragcol = 1;
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var dragging = false;
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var pxls = $(pixcanvas);
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pxls.mousedown(function(e) {
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var pos = getPositionFromEvent(e);
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dragcol = getPixel(pos.x, pos.y) == curpalcol ? 0 : curpalcol;
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setPixel(pos.x, pos.y, curpalcol);
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dragging = true;
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pixcanvas.setCapture();
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})
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.mousemove(function(e) {
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var pos = getPositionFromEvent(e);
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if (dragging) {
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setPixel(pos.x, pos.y, dragcol);
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}
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})
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.mouseup(function(e) {
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var pos = getPositionFromEvent(e);
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setPixel(pos.x, pos.y, dragcol);
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dragging = false;
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commit();
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pixcanvas.releaseCapture();
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});
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}
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this.rotate = function(deg) {
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console.log("rotate " + deg);
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var s1 = Math.sin(deg * Math.PI / 180);
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var c1 = Math.cos(deg * Math.PI / 180);
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var p = self.getImageColors();
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var i = 0;
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for (var y=0; y<height; y++) {
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for (var x=0; x<width; x++) {
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var xx = x + 0.5 - width/2.0;
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var yy = y + 0.5 - height/2.0;
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var xx2 = xx*c1 - yy*s1 + width/2.0 - 0.5;
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var yy2 = yy*c1 + xx*s1 + height/2.0 - 0.5;
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var col = getPixel(Math.round(xx2), Math.round(yy2));
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p[i++] = col;
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}
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}
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i = 0;
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for (var y=0; y<height; y++) {
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for (var x=0; x<width; x++) {
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setPixel(x, y, p[i++]);
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}
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}
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commit();
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}
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}
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/////////////////
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var pixel_re = /([0#]?)([x$%])([0-9a-f]+)/gi;
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function parseHexBytes(s) {
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var arr = [];
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var m;
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while (m = pixel_re.exec(s)) {
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var n;
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if (m[2].startsWith('%'))
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n = parseInt(m[3],2);
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else if (m[2].startsWith('x') || m[2].startsWith('$'))
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n = parseInt(m[3],16);
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else
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n = parseInt(m[3]);
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arr.push(n);
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}
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return arr;
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}
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function replaceHexBytes(s, bytes) {
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var result = "";
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var m;
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var li = 0;
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var i = 0;
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while (m = pixel_re.exec(s)) {
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result += s.slice(li, pixel_re.lastIndex - m[0].length);
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li = pixel_re.lastIndex;
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if (m[2].startsWith('%'))
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result += m[1] + "%" + bytes[i++].toString(2);
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else if (m[2].startsWith('x'))
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result += m[1] + "x" + hex(bytes[i++]);
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else if (m[2].startsWith('$'))
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result += m[1] + "$" + hex(bytes[i++]);
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else
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result += m[1] + bytes[i++].toString();
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}
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result += s.slice(li);
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return result;
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}
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function remapBits(x, arr) {
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if (!arr) return x;
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var y = 0;
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for (var i=0; i<arr.length; i++) {
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var s = arr[i];
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if (s < 0) {
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s = -s-1;
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y ^= 1 << s;
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}
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if (x & (1 << i)) {
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y ^= 1 << s;
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}
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}
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return y;
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}
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function convertBytesToImages(bytes, fmt) {
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var width = fmt.w;
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var height = fmt.h;
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var count = fmt.count || 1;
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var bpp = fmt.bpp || 1;
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var nplanes = fmt.np || 1;
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var bytesperline = fmt.sl || Math.ceil(width * bpp / 8);
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var mask = (1 << bpp)-1;
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var pofs = fmt.pofs || bytesperline*height*count;
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var images = [];
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for (var n=0; n<count; n++) {
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var imgdata = [];
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for (var y=0; y<height; y++) {
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var ofs0 = n*bytesperline*height + y*bytesperline;
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var shift = 0;
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for (var x=0; x<width; x++) {
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var color = 0;
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var ofs = remapBits(ofs0, fmt.remap);
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for (var p=0; p<nplanes; p++) {
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var byte = bytes[ofs + p*pofs];
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color |= ((fmt.brev ? byte>>(8-shift-bpp) : byte>>shift) & mask) << (p*bpp);
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}
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imgdata.push(color);
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shift += bpp;
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if (shift >= 8) {
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ofs0 += 1;
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shift = 0;
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}
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}
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}
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images.push(new Uint8Array(imgdata));
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}
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return images;
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}
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function convertImagesToBytes(images, fmt) {
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var width = fmt.w;
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var height = fmt.h;
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var count = fmt.count || 1;
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var bpp = fmt.bpp || 1;
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var nplanes = fmt.np || 1;
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var bytesperline = fmt.sl || Math.ceil(fmt.w * bpp / 8);
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var mask = (1 << bpp)-1;
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var pofs = fmt.pofs || bytesperline*height*count;
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var bytes = new Uint8Array(bytesperline*height*count*nplanes);
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for (var n=0; n<count; n++) {
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var imgdata = images[n];
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var i = 0;
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for (var y=0; y<height; y++) {
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var ofs0 = n*bytesperline*height + y*bytesperline;
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var shift = 0;
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for (var x=0; x<width; x++) {
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var color = imgdata[i++];
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var ofs = remapBits(ofs0, fmt.remap);
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for (var p=0; p<nplanes; p++) {
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var c = (color >> (p*bpp)) & mask;
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bytes[ofs + p*pofs] |= (fmt.brev ? (c << (8-shift-bpp)) : (c << shift));
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}
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shift += bpp;
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if (shift >= 8) {
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ofs0 += 1;
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shift = 0;
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}
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}
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}
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}
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return bytes;
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}
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function convertPaletteBytes(arr,r0,r1,g0,g1,b0,b1) {
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var result = [];
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for (var i=0; i<arr.length; i++) {
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var d = arr[i];
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var rgb = 0xff000000;
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rgb |= ((d >> r0) & ((1<<r1)-1)) << (0+8-r1);
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rgb |= ((d >> g0) & ((1<<g1)-1)) << (8+8-g1);
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rgb |= ((d >> b0) & ((1<<b1)-1)) << (16+8-b1);
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result.push(rgb);
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}
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return result;
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}
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var palette;
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var paletteSets;
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var paletteSetIndex=0;
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var currentPixelEditor;
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var parentSource;
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var parentOrigin;
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var allimages;
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var currentFormat;
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var currentByteStr;
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var currentPaletteStr;
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var currentPaletteFmt;
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var allthumbs;
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function pixelEditorDecodeMessage(e) {
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parentSource = e.source;
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parentOrigin = e.origin;
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currentFormat = e.data.fmt;
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currentByteStr = e.data.bytestr;
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currentPaletteFmt = e.data.palfmt;
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currentPaletteStr = e.data.palstr;
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var bytes = parseHexBytes(e.data.bytestr);
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allimages = convertBytesToImages(bytes, e.data.fmt);
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palette = [0xff000000, 0xffffffff]; // TODO
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if (currentPaletteStr) {
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var palbytes = parseHexBytes(e.data.palstr);
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var pal = currentPaletteFmt.pal;
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if (pal > 0) {
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var rr = Math.floor(Math.abs(pal/100) % 10);
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var gg = Math.floor(Math.abs(pal/10) % 10);
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var bb = Math.floor(Math.abs(pal) % 10);
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// TODO: n
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if (currentPaletteFmt.pal >= 0)
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palette = convertPaletteBytes(palbytes, 0, rr, rr, gg, rr+gg, bb);
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else
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palette = convertPaletteBytes(palbytes, rr+gg, bb, rr, gg, 0, rr);
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} else {
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var paltable = PREDEF_PALETTES[pal];
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if (paltable) {
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palette = palbytes.map(function(i) { return paltable[i]; });
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} else {
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alert("No palette named " + pal);
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}
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}
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if (currentPaletteFmt.n) {
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paletteSets = [];
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for (var i=0; i<palette.length; i+=currentPaletteFmt.n) {
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paletteSets.push(palette.slice(i, i+currentPaletteFmt.n));
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}
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palette = paletteSets[paletteSetIndex = 0];
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// TODO: swap palettes
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}
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} else {
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var ncols = (currentFormat.bpp || 1) * (currentFormat.np || 1);
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switch (ncols) {
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case 2:
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palette = [0xff000000, 0xffff00ff, 0xffffff00, 0xffffffff];
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break;
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// TODO
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}
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// TODO: default palette?
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}
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palette = new Uint32Array(palette);
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}
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function pixelEditorCreateThumbnails(e) {
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// create thumbnail for all images
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$("#thumbnaildiv").empty();
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var parentdiv;
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var count = e.data.fmt.count || 1;
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allthumbs = [];
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for (var i=0; i<count; i++) {
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if ((i & 15) == 0) {
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parentdiv = $("#thumbnaildiv").append("<div>");
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}
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allthumbs.push(createThumbnailForImage(parentdiv, i));
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}
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}
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function pixelEditorReceiveMessage(e) {
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pixelEditorDecodeMessage(e);
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pixelEditorCreateThumbnails(e);
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// create initial editor
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createEditorForImage(0);
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}
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function createThumbnailForImage(parentdiv, i) {
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var span = $('<span class="thumb">');
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var thumb = new PixelEditor(span, currentFormat, palette, allimages[i]);
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parentdiv.append(span);
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span.click(function() { createEditorForImage(i) });
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return thumb;
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}
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function createEditorForImage(i) {
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currentPixelEditor = new PixelEditor(maineditor, currentFormat, palette, allimages[i], [allthumbs[i]]);
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currentPixelEditor.resize();
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currentPixelEditor.makeEditable();
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currentPixelEditor.createPaletteButtons();
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}
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function postToParentWindow(data) {
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if (data.save) {
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var allimgs = [];
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for (var i=0; i<allthumbs.length; i++) {
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allimgs.push(allthumbs[i].getImageColors());
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}
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data.bytes = convertImagesToBytes(allimgs, currentFormat);
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data.bytestr = replaceHexBytes(currentByteStr, data.bytes);
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}
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if (parentSource) parentSource.postMessage(data, "*");
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return data;
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}
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function pixelEditorResize(e) {
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if (currentPixelEditor) {
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currentPixelEditor.resize();
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}
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}
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function pixelEditorKeypress(e) {
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if (!currentPixelEditor) return;
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var c = e.charCode;
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if (c >= 48 && c <= 57) {
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currentPixelEditor.setCurrentColor(c-48);
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} else if (c >= 97 && c <= 102) {
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currentPixelEditor.setCurrentColor(c-97+10);
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} else {
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switch (e.keyCode) {
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case 33: // PgUp
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currentPixelEditor.rotate(-90);
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break;
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case 34: // PgDn
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currentPixelEditor.rotate(90);
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break;
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case 35: // PgUp
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currentPixelEditor.rotate(-45);
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break;
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case 36: // PgDn
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currentPixelEditor.rotate(45);
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break;
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default:
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console.log(e);
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break;
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}
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}
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}
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var PREDEF_PALETTES = {
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'nes':[
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0xFF7C7C7C ,0xFF0000FC ,0xFF0000BC ,0xFF4428BC ,0xFF940084 ,0xFFA80020 ,0xFFA81000 ,0xFF881400
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,0xFF503000 ,0xFF007800 ,0xFF006800 ,0xFF005800 ,0xFF004058 ,0xFF000000 ,0xFF000000 ,0xFF000000
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,0xFFBCBCBC ,0xFF0078F8 ,0xFF0058F8 ,0xFF6844FC ,0xFFD800CC ,0xFFE40058 ,0xFFF83800 ,0xFFE45C10
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,0xFFAC7C00 ,0xFF00B800 ,0xFF00A800 ,0xFF00A844 ,0xFF008888 ,0xFF000000 ,0xFF000000 ,0xFF000000
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,0xFFF8F8F8 ,0xFF3CBCFC ,0xFF6888FC ,0xFF9878F8 ,0xFFF878F8 ,0xFFF85898 ,0xFFF87858 ,0xFFFCA044
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,0xFFF8B800 ,0xFFB8F818 ,0xFF58D854 ,0xFF58F898 ,0xFF00E8D8 ,0xFF787878 ,0xFF000000 ,0xFF000000
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,0xFFFCFCFC ,0xFFA4E4FC ,0xFFB8B8F8 ,0xFFD8B8F8 ,0xFFF8B8F8 ,0xFFF8A4C0 ,0xFFF0D0B0 ,0xFFFCE0A8
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,0xFFF8D878 ,0xFFD8F878 ,0xFFB8F8B8 ,0xFFB8F8D8 ,0xFF00FCFC ,0xFFF8D8F8 ,0xFF000000 ,0xFF000000
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]
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};
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