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activity.js
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// Copyright (c) 2014-22 Walter Bender
// Copyright (c) Yash Khandelwal, GSoC'15
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the The GNU Affero General Public
// License as published by the Free Software Foundation; either
// version 3 of the License, or (at your option) any later version.
//
// You should have received a copy of the GNU Affero General Public
// License along with this library; if not, write to the Free Software
// Foundation, 51 Franklin Street, Suite 500 Boston, MA 02110-1335 USA
//
// Note: This code is inspired by the Python Turtle Blocks project
// (https://github.com/walterbender/turtleart), but implemented from
// scratch. -- Walter Bender, October 2014.
/*
globals
_, ALTO, analyzeProject, BASS, BIGGERBUTTON, BIGGERDISABLEBUTTON,
Blocks, Boundary, CARTESIAN, changeImage, closeWidgets,
COLLAPSEBLOCKSBUTTON, COLLAPSEBUTTON, createDefaultStack,
createHelpContent, createjs, DATAOBJS, DEFAULTBLOCKSCALE,
DEFAULTDELAY, define, doBrowserCheck, doBrowserCheck, docByClass,
docById, doSVG, EMPTYHEAPERRORMSG, EXPANDBUTTON, FILLCOLORS,
getMacroExpansion, getOctaveRatio, getTemperament, transcribeMidi,
GOHOMEBUTTON, GOHOMEFADEDBUTTON, GRAND, HelpWidget, HIDEBLOCKSFADEDBUTTON,
hideDOMLabel, initBasicProtoBlocks, initPalettes,
INLINECOLLAPSIBLES, jQuery, JSEditor, LanguageBox, ThemeBox, Logo, MSGBLOCK,
NANERRORMSG, NOACTIONERRORMSG, NOBOXERRORMSG, NOINPUTERRORMSG,
NOMICERRORMSG, NOSQRTERRORMSG, NOSTRINGERRORMSG, PALETTEFILLCOLORS,
PALETTESTROKECOLORS, PALETTEHIGHLIGHTCOLORS, HIGHLIGHTSTROKECOLORS,
Palettes, PasteBox, PlanetInterface, platform, platformColor,
piemenuKey, POLAR, preparePluginExports, processMacroData,
processPluginData, processRawPluginData, require, SaveInterface,
SHOWBLOCKSBUTTON, SMALLERBUTTON, SMALLERDISABLEBUTTON, SOPRANO,
SPECIALINPUTS, STANDARDBLOCKHEIGHT, StatsWindow, STROKECOLORS,
TENOR, TITLESTRING, Toolbar, Trashcan, TREBLE, Turtles, TURTLESVG,
updatePluginObj, ZERODIVIDEERRORMSG, GRAND_G, GRAND_F,
SHARP, FLAT, buildScale, TREBLE_F, TREBLE_G
*/
/*
exported
Activity, LEADING, _THIS_IS_MUSIC_BLOCKS_, _THIS_IS_TURTLE_BLOCKS_,
globalActivity, hideArrows, doAnalyzeProject
*/
const LEADING = 0;
const BLOCKSCALES = [1, 1.5, 2, 3, 4];
const _THIS_IS_MUSIC_BLOCKS_ = true;
const _THIS_IS_TURTLE_BLOCKS_ = !_THIS_IS_MUSIC_BLOCKS_;
const _ERRORMSGTIMEOUT_ = 15000;
const _MSGTIMEOUT_ = 60000;
let MYDEFINES = [
"utils/platformstyle",
"easeljs.min",
"tweenjs.min",
"preloadjs.min",
"howler",
"p5.min",
"p5.sound.min",
"p5.dom.min",
// 'mespeak',
"Chart",
"utils/utils",
"activity/artwork",
"widgets/status",
"widgets/help",
"utils/munsell",
"activity/toolbar",
"activity/trash",
"activity/boundary",
"activity/palette",
"activity/protoblocks",
"activity/blocks",
"activity/block",
"activity/turtledefs",
"activity/notation",
"activity/logo",
"activity/turtle",
"activity/turtles",
"activity/turtle-singer",
"activity/turtle-painter",
"activity/languagebox",
"activity/themebox",
"activity/basicblocks",
"activity/blockfactory",
"activity/piemenus",
"activity/planetInterface",
"activity/rubrics",
"activity/macros",
"activity/SaveInterface",
"utils/musicutils",
"utils/synthutils",
"utils/mathutils",
"activity/pastebox",
"prefixfree.min",
"Tone",
"activity/js-export/samples/sample",
"activity/js-export/export",
"activity/js-export/interface",
"activity/js-export/constraints",
"activity/js-export/ASTutils",
"activity/js-export/generate",
"activity/js-export/API/GraphicsBlocksAPI",
"activity/js-export/API/PenBlocksAPI",
"activity/js-export/API/RhythmBlocksAPI",
"activity/js-export/API/MeterBlocksAPI",
"activity/js-export/API/PitchBlocksAPI",
"activity/js-export/API/IntervalsBlocksAPI",
"activity/js-export/API/ToneBlocksAPI",
"activity/js-export/API/OrnamentBlocksAPI",
"activity/js-export/API/VolumeBlocksAPI",
"activity/js-export/API/DrumBlocksAPI",
"activity/js-export/API/DictBlocksAPI",
"activity/turtleactions/RhythmActions",
"activity/turtleactions/MeterActions",
"activity/turtleactions/PitchActions",
"activity/turtleactions/IntervalsActions",
"activity/turtleactions/ToneActions",
"activity/turtleactions/OrnamentActions",
"activity/turtleactions/VolumeActions",
"activity/turtleactions/DrumActions",
"activity/turtleactions/DictActions",
"activity/blocks/RhythmBlocks",
"activity/blocks/MeterBlocks",
"activity/blocks/PitchBlocks",
"activity/blocks/IntervalsBlocks",
"activity/blocks/ToneBlocks",
"activity/blocks/OrnamentBlocks",
"activity/blocks/VolumeBlocks",
"activity/blocks/DrumBlocks",
"activity/blocks/WidgetBlocks",
"activity/blocks/RhythmBlockPaletteBlocks",
"activity/blocks/ActionBlocks",
"activity/blocks/FlowBlocks",
"activity/blocks/NumberBlocks",
"activity/blocks/BoxesBlocks",
"activity/blocks/BooleanBlocks",
"activity/blocks/HeapBlocks",
"activity/blocks/DictBlocks",
"activity/blocks/ExtrasBlocks",
"activity/blocks/ProgramBlocks",
"activity/blocks/GraphicsBlocks",
"activity/blocks/PenBlocks",
"activity/blocks/MediaBlocks",
"activity/blocks/SensorsBlocks",
"activity/blocks/EnsembleBlocks",
"widgets/widgetWindows",
"widgets/statistics",
"widgets/jseditor"
];
if (_THIS_IS_MUSIC_BLOCKS_) {
const MUSICBLOCKS_EXTRAS = [
"widgets/modewidget",
"widgets/meterwidget",
"widgets/phrasemaker",
"widgets/arpeggio",
"widgets/aiwidget",
"widgets/pitchdrummatrix",
"widgets/rhythmruler",
"widgets/pitchstaircase",
"widgets/temperament",
"widgets/tempo",
"widgets/pitchslider",
"widgets/musickeyboard",
"widgets/timbre",
"widgets/oscilloscope",
"widgets/sampler",
"activity/lilypond",
"activity/abc",
"activity/midi",
"activity/mxml"
];
MYDEFINES = MYDEFINES.concat(MUSICBLOCKS_EXTRAS);
}
// Create a global variable from the Activity obj to provide access to
// blocks, logo, palettes, and turtles for plugins and js-export.
let globalActivity;
/**
* Performs analysis on the project using the global activity.
* @returns {object} - The analysis result.
*/
const doAnalyzeProject = function() {
return analyzeProject(globalActivity);
};
/**
* Represents an activity in the application.
*/
class Activity {
/**
* Creates an Activity instance.
*/
constructor() {
globalActivity = this;
this.cellSize = 55;
this.searchSuggestions = [];
this.homeButtonContainer;
this.msgTimeoutID = null;
this.msgText = null;
this.errorMsgTimeoutID = null;
this.errorMsgText = null;
this.errorMsgArrow = null;
this.errorArtwork = {};
this.cartesianBitmap = null;
this.polarBitmap = null;
this.trebleBitmap = null;
this.trebleSharpBitmap = [null, null, null, null, null, null, null];
this.trebleFlatBitmap = [null, null, null, null, null, null, null];
this.grandBitmap = null;
this.grandSharpBitmap = [null, null, null, null, null, null, null];
this.grandFlatBitmap = [null, null, null, null, null, null, null];
this.sopranoBitmap = null;
this.sopranoSharpBitmap = [null, null, null, null, null, null, null];
this.sopranoFlatBitmap = [null, null, null, null, null, null, null];
this.altoBitmap = null;
this.altoSharpBitmap = [null, null, null, null, null, null, null];
this.altoFlatBitmap = [null, null, null, null, null, null, null];
this.tenorBitmap = null;
this.tenorSharpBitmap = [null, null, null, null, null, null, null];
this.tenorFlatBitmap = [null, null, null, null, null, null, null];
this.bassBitmap = null;
this.bassSharpBitmap = [null, null, null, null, null, null, null];
this.bassFlatBitmap = [null, null, null, null, null, null, null];
const ERRORARTWORK = [
"emptybox",
"emptyheap",
"negroot",
"noinput",
"zerodivide",
"notanumber",
"nostack",
"notastring",
"nomicrophone"
];
this.saveLocally = null;
this.scrollBlockContainer = false;
this.blockRefreshCanvas = false;
this.statsWindow = null;
this.firstTimeUser = false;
this.beginnerMode = false;
// Flag to disable keyboard during loading of MB
this.keyboardEnableFlag;
this.inTempoWidget = false;
this.projectID = null;
this.storage = localStorage;
// Flag to indicate whether the user is performing a 2D drag operation.
this.isDragging = false;
// Flag to indicate whether user is selecting
this.isSelecting = false;
// Flag to indicate the selection mode is on
this.selectionModeOn = false;
// Flag to check if the helpful search widget is active or not (for "click" event handler purpose)
this.isHelpfulSearchWidgetOn = false;
//Flag to check if any other input box is active or not
this.isInputON = false;
this.themes = ["light", "dark"];
try {
for (let i = 0; i < this.themes.length; i++) {
if (this.themes[i] === this.storage.themePreference) {
body.classList.add(this.themes[i]);
} else {
body.classList.remove(this.themes[i]);
}
}
} catch (e) {
console.error("Error accessing themePreference storage:", e);
}
this.beginnerMode = true;
try {
if (this.storage.beginnerMode === undefined) {
this.firstTimeUser = true;
} else if (this.storage.beginnerMode !== null) {
this.beginnerMode = this.storage.beginnerMode;
if (typeof this.beginnerMode === "string") {
if (this.beginnerMode === "false") {
this.beginnerMode = false;
}
}
}
} catch (e) {
// eslint-disable-next-line no-console
console.error(e);
}
try {
let lang = "en";
if (this.storage.languagePreference !== undefined) {
lang = this.storage.languagePreference;
document.webL10n.setLanguage(lang);
} else {
lang = navigator.language;
if (lang.includes("-")) {
lang = lang.slice(0, lang.indexOf("-"));
document.webL10n.setLanguage(lang);
}
}
} catch (e) {
// eslint-disable-next-line no-console
console.error(e);
}
this.KeySignatureEnv = ["C", "major", false];
try {
if (this.storage.KeySignatureEnv !== undefined) {
// eslint-disable-next-line no-console
console.log(this.storage.KeySignatureEnv);
this.KeySignatureEnv = this.storage.KeySignatureEnv.split(",");
this.KeySignatureEnv[2] = (this.KeySignatureEnv[2] === "true");
}
} catch (e) {
// eslint-disable-next-line no-console
console.error(e);
}
/**
* Initialises major variables and renders default stack.
* Sets up the initial state and dependencies of the activity.
*/
this.setupDependencies = () => {
createDefaultStack();
createHelpContent(this);
window.scroll(0, 0);
/*
try {
meSpeak.loadConfig('lib/mespeak_config.json');
lang = document.webL10n.getLanguage();
if (['es', 'ca', 'de', 'el', 'eo', 'fi', 'fr', 'hu', 'it', 'kn', 'la', 'lv', 'nl', 'pl', 'pt', 'ro', 'sk', 'sv', 'tr', 'zh'].indexOf(lang) !== -1) {
meSpeak.loadVoice('lib/voices/' + lang + '.json');
} else {
meSpeak.loadVoice('lib/voices/en/en.json');
}
} catch (e) {
// eslint-disable-next-line no-console
console.debug(e);
}
*/
document.title = TITLESTRING;
this.canvas = docById("myCanvas");
// Set up a file chooser for the doOpen function.
this.fileChooser = docById("myOpenFile");
// Set up a file chooser for the doOpenPlugin function.
this.pluginChooser = docById("myOpenPlugin");
// The file chooser for all files
this.allFilesChooser = docById("myOpenAll");
this.auxToolbar = docById("aux-toolbar");
// Error message containers
this.errorText = docById("errorText");
this.errorTextContent = docById("errorTextContent");
// Hide Arrow on hiding error message
this.errorText.addEventListener("click", this._hideArrows);
// Show and populate the printText div.
this.printText = docById("printText");
this.printTextContent = docById("printTextContent");
// Are we running off of a server?
this.server = true;
this.turtleBlocksScale = 1;
this.mousestage = null;
this.stage = null;
this.turtles = null;
this.palettes = null;
this.blocks = null;
this.logo = null;
this.pasteBox = null;
this.languageBox = null;
this.themeBox = null;
this.planet = null;
window.converter = null;
this.buttonsVisible = true;
this.headerContainer = null;
this.swiping = false;
this.menuButtonsVisible = false;
this.scrollBlockContainer = false;
this.currentKeyCode = 0;
this.merging = false;
this.loading = false;
// On-screen buttons
this.smallerContainer = null;
this.largerContainer = null;
this.resizeDebounce = false;
this.hideBlocksContainer = null;
this.collapseBlocksContainer = null;
this.searchWidget = docById("search");
this.searchWidget.style.visibility = "hidden";
this.searchWidget.placeholder = _("Search for blocks");
this.helpfulSearchWidget = document.createElement("input");
this.helpfulSearchWidget.setAttribute("id", "helpfulSearch");
this.helpfulSearchWidget.style.visibility = "hidden";
this.helpfulSearchWidget.placeholder = _("Search for blocks");
this.helpfulSearchWidget.classList.add("ui-autocomplete");
this.progressBar = docById("myProgress");
this.progressBar.style.visibility = "hidden";
new createjs.DOMElement(docById("paste"));
this.paste = docById("paste");
this.paste.style.visibility = "hidden";
this.toolbarHeight = document.getElementById("toolbars").offsetHeight;
this.helpfulWheelItems = [];
this.setHelpfulSearchDiv();
};
/*
* creates helpfulSearchDiv for search
*/
this.setHelpfulSearchDiv = () => {
if (docById("helpfulSearchDiv")) {
docById("helpfulSearchDiv").parentNode.removeChild(
docById("helpfulSearchDiv")
);
}
this.helpfulSearchDiv = document.createElement("div");
this.helpfulSearchDiv.setAttribute("id", "helpfulSearchDiv");
document.body.appendChild(this.helpfulSearchDiv);
// Create the div for the close button (cross button)
const closeButtonDiv = document.createElement("div");
closeButtonDiv.style.cssText =
"position: absolute;" +
"top: 10px;" +
"right: 10px;" +
"cursor: pointer;";
// Create the cross button itself
const closeButton = document.createElement("button");
closeButton.textContent = "×";
closeButton.id = "crossButton";
document.body.appendChild(closeButton);
closeButtonDiv.appendChild(closeButton);
this.helpfulSearchDiv.appendChild(closeButtonDiv);
// Add event listener to remove the search div from the DOM
const modeButton = docById("begIconText");
closeButton.addEventListener("click", this._hideHelpfulSearchWidget);
modeButton.addEventListener("click", this._hideHelpfulSearchWidget);
this.helpfulSearchDiv.appendChild(this.helpfulSearchWidget);
};
/*
* displays helpfulSearchDiv on canvas
*/
this._displayHelpfulSearchDiv = () => {
if (!docById("helpfulSearchDiv")) {
this.setHelpfulSearchDiv(); // Re-create and append the div if it's not found
}
this.helpfulSearchDiv.style.left = docById("helpfulWheelDiv").offsetLeft + 80 * this.getStageScale() + "px";
this.helpfulSearchDiv.style.top = docById("helpfulWheelDiv").offsetTop + 110 * this.getStageScale() + "px";
const windowWidth = window.innerWidth;
const windowHeight = window.innerHeight;
this.helpfulSearchDiv.style.display = "block";
const menuWidth = this.helpfulSearchDiv.offsetWidth;
const menuHeight = this.helpfulSearchDiv.offsetHeight;
if (this.helpfulSearchDiv.offsetLeft + menuWidth > windowWidth) {
this.helpfulSearchDiv.style.left = (windowWidth - menuWidth) + "px";
}
if (this.helpfulSearchDiv.offsetTop + menuHeight > windowHeight) {
this.helpfulSearchDiv.style.top = (windowHeight - menuHeight) + "px";
}
this.showHelpfulSearchWidget();
this.isHelpfulSearchWidgetOn = true;
};
// hides helpfulSearchDiv on canvas
this._hideHelpfulSearchWidget = (e) => {
if (docById("helpfulWheelDiv").style.display !== "none") {
docById("helpfulWheelDiv").style.display = "none";
}
if (this.helpfulSearchDiv && this.helpfulSearchDiv.parentNode) {
this.helpfulSearchDiv.parentNode.removeChild(this.helpfulSearchDiv);
}
that.__tick();
};
/*
* Sets up right click functionality opening the context menus
* (if block is right clicked)
*/
this.doContextMenus = () => {
document.addEventListener(
"contextmenu",
(event) => {
event.preventDefault();
event.stopPropagation();
if (this.beginnerMode) return;
if (this.isHelpfulSearchWidgetOn) {
this._hideHelpfulSearchWidget();
}
if (!this.blocks.isCoordinateOnBlock(event.clientX, event.clientY) &&
event.target.id === "myCanvas") {
this._displayHelpfulWheel(event);
}
},
false
);
};
/*
* displays helpfulWheel on canvas on right click
*/
this._displayHelpfulWheel = (event) => {
docById("helpfulWheelDiv").style.position = "absolute";
const x = event.clientX;
const y = event.clientY;
const canvasLeft = this.canvas.offsetLeft + 28 * this.getStageScale();
const canvasTop = this.canvas.offsetTop + 6 * this.getStageScale();
const helpfulWheelLeft = Math.max(Math.round(x * this.getStageScale() + canvasLeft) - 150, canvasLeft);
const helpfulWheelTop = Math.max(Math.round(y * this.getStageScale() + canvasTop) - 150, canvasTop);
docById("helpfulWheelDiv").style.left = helpfulWheelLeft + "px";
docById("helpfulWheelDiv").style.top = helpfulWheelTop + "px";
const windowWidth = window.innerWidth - 20;
const windowHeight = window.innerHeight - 20;
if (helpfulWheelLeft + 350 > windowWidth) {
docById("helpfulWheelDiv").style.left = (windowWidth - 350) + "px";
}
if (helpfulWheelTop + 350 > windowHeight) {
docById("helpfulWheelDiv").style.top = (windowHeight - 350) + "px";
}
const selectedBlocksCount = this.blocks.selectedBlocks.filter(block => !block.trash).length;
if (selectedBlocksCount) {
this.helpfulWheelItems.find(ele => ele.label === "Move to trash").display = true;
this.helpfulWheelItems.find(ele => ele.label === "Duplicate").display = true;
} else {
this.helpfulWheelItems.find(ele => ele.label === "Move to trash").display = false;
this.helpfulWheelItems.find(ele => ele.label === "Duplicate").display = false;
}
docById("helpfulWheelDiv").style.display = "";
const wheel = new wheelnav("helpfulWheelDiv", null, 300, 300);
wheel.colors = platformColor.wheelcolors;
wheel.slicePathFunction = slicePath().DonutSlice;
wheel.slicePathCustom = slicePath().DonutSliceCustomization();
wheel.slicePathCustom.minRadiusPercent = 0.45;
wheel.slicePathCustom.maxRadiusPercent = 1.0;
wheel.sliceSelectedPathCustom = wheel.slicePathCustom;
wheel.sliceInitPathCustom = wheel.slicePathCustom;
wheel.clickModeRotate = false;
const wheelItems = this.helpfulWheelItems.filter(ele => ele.display);
wheel.initWheel(wheelItems.map(ele => ele.icon));
wheel.createWheel();
wheel.navItems[0].selected = false;
wheelItems.forEach((ele, i) => {
wheel.navItems[i].setTooltip(_(ele.label));
wheel.navItems[i].navigateFunction = () => ele.fn(this);
});
const closeHelpfulWheel = (e) => {
const isClickInside = helpfulWheelDiv.contains(e.target);
if (!isClickInside) {
helpfulWheelDiv.style.display = "none";
document.removeEventListener("click", closeHelpfulWheel);
}
};
document.addEventListener("click", closeHelpfulWheel);
};
/**
* Sets up plugin and palette boilerplate.
* This function initializes various properties related to the plugin objects,
* palette colors, and other settings used throughout the application.
*/
this.doPluginsAndPaletteCols = () => {
// Calculate the palette colors.
for (const p in platformColor.paletteColors) {
PALETTEFILLCOLORS[p] = platformColor.paletteColors[p][0];
PALETTESTROKECOLORS[p] = platformColor.paletteColors[p][1];
PALETTEHIGHLIGHTCOLORS[p] = platformColor.paletteColors[p][2];
HIGHLIGHTSTROKECOLORS[p] = platformColor.paletteColors[p][1];
}
this.pluginObjs = {
PALETTEPLUGINS: {},
PALETTEFILLCOLORS: {},
PALETTESTROKECOLORS: {},
PALETTEHIGHLIGHTCOLORS: {},
FLOWPLUGINS: {},
ARGPLUGINS: {},
BLOCKPLUGINS: {},
MACROPLUGINS: {},
ONLOAD: {},
ONSTART: {},
ONSTOP: {}
};
// Stacks of blocks saved in local storage
this.macroDict = {};
// default values
this.DEFAULTDELAY = 500; // milleseconds
this.TURTLESTEP = -1; // Run in step-by-step mode
this.blockscale = BLOCKSCALES.indexOf(DEFAULTBLOCKSCALE);
if (this.blockscale === -1) {
this.blockscale = 1;
}
// Used to track mouse state for mouse button block
this.stageMouseDown = false;
this.stageX = 0;
this.stageY = 0;
// OLPC hardware
const onXO =
(screen.width === 1200 && screen.height === 900) ||
(screen.width === 900 && screen.height === 1200);
this.cellSize = 55;
if (onXO) {
this.cellSize = 75;
}
this.onscreenButtons = [];
this.onscreenMenu = [];
this.firstRun = true;
this.pluginsImages = {};
};
/**
* Recenters blocks by updating their position on the screen.
*
* This function triggers the `_findBlocks` method on the provided `activity` object,
* which recalculates the positions of blocks. If the 'helpfulWheelDiv' element is visible,
* it is hidden, and the `__tick` method is called to update the activity state.
*
* @param {Object} activity - The activity instance containing the blocks to recenter.
* @constructor
*/
const findBlocks = (activity) => {
activity._findBlocks();
if (docById("helpfulWheelDiv").style.display !== "none") {
docById("helpfulWheelDiv").style.display = "none";
activity.__tick();
}
};
/**
* Ensures blocks stay within canvas boundaries when resized.
* Ensures that music blocks are responsive to horizontal resizing.
* Ensures that overall integrity of blocks isn't hampered with.
*/
function repositionBlocks(activity) {
const canvasWidth = window.innerWidth;
const processedBlocks = new Set();
//Array for storing individual dragGroups (the chunks of code linked together which are not connected)
const dragGroups = [];
// Identifying individual dragGroups
Object.values(activity.blocks.blockList).forEach(block => {
if (!processedBlocks.has(block.id)) {
activity.blocks.findDragGroup(block.id);
if (activity.blocks.dragGroup.length > 0) {
dragGroups.push([...activity.blocks.dragGroup]); // Store the group into dragGroups
activity.blocks.dragGroup.forEach(id => processedBlocks.add(id)); // Process individual groups
}
}
});
// Repositioning of dragGroups according to horizontal resizing
dragGroups.forEach(group => {
const referenceBlock = activity.blocks.blockList[group[0]];
// Store initial positions
if (!referenceBlock.initialPosition) {
referenceBlock.initialPosition = { x: referenceBlock.container.x, y: referenceBlock.container.y };
}
if (canvasWidth < 768 && !referenceBlock.beforeMobilePosition) {
referenceBlock.beforeMobilePosition = { x: referenceBlock.container.x, y: referenceBlock.container.y };
}
if (canvasWidth >= 768 && referenceBlock.beforeMobilePosition) {
const dx = referenceBlock.beforeMobilePosition.x - referenceBlock.container.x;
const dy = referenceBlock.beforeMobilePosition.y - referenceBlock.container.y;
group.forEach(blockId => {
const block = activity.blocks.blockList[blockId];
block.container.x += dx;
block.container.y += dy;
});
referenceBlock.beforeMobilePosition = null; // Clear stored position
//this prevents old groups from affecting new calculations.
}
if (canvasWidth < 600 && !referenceBlock.before600pxPosition) {
referenceBlock.before600pxPosition = { x: referenceBlock.container.x, y: referenceBlock.container.y };
}
if (canvasWidth >= 600 && referenceBlock.before600pxPosition) {
const dx = referenceBlock.before600pxPosition.x - referenceBlock.container.x;
const dy = referenceBlock.before600pxPosition.y - referenceBlock.container.y;
group.forEach(blockId => {
const block = activity.blocks.blockList[blockId];
block.container.x += dx;
block.container.y += dy;
});
referenceBlock.before600pxPosition = null;
}
// Ensure blocks stay within horizontal boundary
const rightmostX = Math.max(...group.map(id => activity.blocks.blockList[id].container.x + activity.blocks.blockList[id].width));
if (rightmostX > canvasWidth) {
const shiftX = Math.max(10, canvasWidth - rightmostX - 10);
group.forEach(blockId => {
activity.blocks.blockList[blockId].container.x += shiftX;
});
}
// Ensures that blocks do not go hide behind the search for blocks div
const leftmostX = Math.min(...group.map(id => activity.blocks.blockList[id].container.x));
if (leftmostX < 0) {
const shiftX = 100 - leftmostX;
group.forEach(blockId => {
activity.blocks.blockList[blockId].container.x += shiftX;
});
}
});
activity._findBlocks();
}
//if any window resize event occurs:
window.addEventListener("resize", () => repositionBlocks(this));
/**
* Finds and organizes blocks within the workspace.
* Arranges blocks in grid format on wide screens and vertically on narrow screens.
*/
this._findBlocks = () => {
if (!this.blocks.visible) {
this._changeBlockVisibility();
}
this.blocks.activeBlock = null;
hideDOMLabel();
this.blocks.showBlocks();
this.blocksContainer.x = 0;
this.blocksContainer.y = 0;
const screenWidth = window.innerWidth;
const isNarrowScreen = screenWidth < 600;
const minColumnWidth = 400;
const numColumns = isNarrowScreen ? 1 : Math.floor(screenWidth / minColumnWidth);
const toppos = this.auxToolbar.style.display === "block" ? 90 + this.toolbarHeight : 90;
const x = isNarrowScreen ? Math.floor(screenWidth / 2) : Math.floor(this.canvas.width / 4);
let y = Math.floor(toppos * this.turtleBlocksScale);
const verticalSpacing = Math.floor(40 * this.turtleBlocksScale);
const columnSpacing = (screenWidth / numColumns) * 1.2;
const columnXPositions = Array.from({ length: numColumns }, (_, i) =>
Math.floor(i * columnSpacing + columnSpacing / 2)
);
const columnYPositions = Array(numColumns).fill(y);
for (const blk in this.blocks.blockList) {
if (!this.blocks.blockList[blk].trash) {
const myBlock = this.blocks.blockList[blk];
// Store original position only once
if (!myBlock.originalPosition) {
myBlock.originalPosition = { x: myBlock.container.x, y: myBlock.container.y };
}
if (myBlock.connections[0] === null) {
if (isNarrowScreen) {
const dx = x - myBlock.container.x;
const dy = y - myBlock.container.y;
this.blocks.moveBlockRelative(blk, dx, dy);
y += myBlock.height + verticalSpacing;
} else {
const minYIndex = columnYPositions.indexOf(Math.min(...columnYPositions));
const dx = columnXPositions[minYIndex] - myBlock.container.x;
const dy = columnYPositions[minYIndex] - myBlock.container.y;
this.blocks.moveBlockRelative(blk, dx, dy);
columnYPositions[minYIndex] += myBlock.height + verticalSpacing;
}
}
// Making code to make sure that
if (myBlock.connections.length>0) {
myBlock.connections.forEach(conn => {
if (conn !== null) {
const innerBlock = this.blocks.blockList[conn] ;
if (innerBlock) {
innerBlock.container.x = myBlock.container.x + innerBlock.relativeX;
innerBlock.container.y = myBlock.container.y + innerBlock.relativeY;
}
}
});
}
}
}
repositionBlocks(this);
this.setHomeContainers(false);
this.boundary.hide();
for (let turtle = 0; turtle < this.turtles.turtleList.length; turtle++) {
const savedPenState = this.turtles.turtleList[turtle].painter.penState;
this.turtles.turtleList[turtle].painter.penState = false;
this.turtles.turtleList[turtle].painter.doSetXY(0, 0);
this.turtles.turtleList[turtle].painter.doSetHeading(0);
this.turtles.turtleList[turtle].painter.penState = savedPenState;
}
};
/**
* Finds and organizes blocks within the workspace.
* Blocks are positioned based on their connections and availability within the canvas area.
* This method is part of the internal mechanism to ensure that blocks are displayed correctly and efficiently.
* @constructor
*/
// Flag to track number of clicks and for alternate mode switching while clicking
this._isFirstHomeClick = true;
this._findBlocks = () => {
// Ensure visibility of blocks
if (!this.blocks.visible) {
this._changeBlockVisibility();
}
// Reset active block and hide DOM label
this.blocks.activeBlock = null;
hideDOMLabel();
// Show blocks and set initial container position
this.blocks.showBlocks();
this.blocksContainer.x = 0;
this.blocksContainer.y = 0;
if (this._isFirstHomeClick) {
// First clicked logic (arrange blocks in rows may have overlapping of blocks)
let toppos;
if (this.auxToolbar.style.display === "block") {
toppos = 90 + this.toolbarHeight;
} else {
toppos = 90;
}
const leftpos = Math.floor(this.canvas.width / 4);
this.palettes.updatePalettes();
let x = Math.floor(leftpos * this.turtleBlocksScale);
let y = Math.floor(toppos * this.turtleBlocksScale);
let even = true;
// Position "start" blocks first
for (const blk in this.blocks.blockList) {
if (!this.blocks.blockList[blk].trash) {
const myBlock = this.blocks.blockList[blk];
if (myBlock.name !== "start") {
continue;
}
if (myBlock.connections[0] === null) {
const dx = x - myBlock.container.x;
const dy = y - myBlock.container.y;
this.blocks.moveBlockRelative(blk, dx, dy);
this.blocks.findDragGroup(blk);
if (this.blocks.dragGroup.length > 0) {
for (let b = 0; b < this.blocks.dragGroup.length; b++) {
const bblk = this.blocks.dragGroup[b];
if (b !== 0) {
this.blocks.moveBlockRelative(bblk, dx, dy);
}
}
}
x += Math.floor(150 * this.turtleBlocksScale);
if (x > (this.canvas.width * 7) / 8 / this.turtleBlocksScale) {
even = !even;
if (even) {
x = Math.floor(leftpos);
} else {
x = Math.floor(leftpos + STANDARDBLOCKHEIGHT);
}
y += STANDARDBLOCKHEIGHT;
}
}
}
}
// Position other blocks
for (const blk in this.blocks.blockList) {
if (!this.blocks.blockList[blk].trash) {
const myBlock = this.blocks.blockList[blk];
if (myBlock.name === "start") {
continue;
}
if (myBlock.connections[0] === null) {
const dx = x - myBlock.container.x;
const dy = y - myBlock.container.y;
this.blocks.moveBlockRelative(blk, dx, dy);
this.blocks.findDragGroup(blk);
if (this.blocks.dragGroup.length > 0) {
for (let b = 0; b < this.blocks.dragGroup.length; b++) {
const bblk = this.blocks.dragGroup[b];
if (b !== 0) {
this.blocks.moveBlockRelative(bblk, dx, dy);
}
}
}
x += Math.floor(150 * this.turtleBlocksScale);
if (x > (this.canvas.width * 7) / 8 / this.turtleBlocksScale) {
even = !even;
if (even) {
x = Math.floor(leftpos);
} else {
x = Math.floor(leftpos + STANDARDBLOCKHEIGHT);
}
y += STANDARDBLOCKHEIGHT;
}
}
}
}
} else {
// Second click logic (arrange blocks in columns this avoid overlapping of blocks)
let toppos;
if (this.auxToolbar.style.display === "block") {
toppos = 90 + this.toolbarHeight;
} else {
toppos = 90;
}
/**
* Device type resolution ranges and typical orientation:
* Desktop: 1024x768 to 5120x2880 (Landscape primary, Portrait supported)
* Tablet: 768x1024 to 2560x1600 (Portrait common, Landscape supported)
* Mobile: 320x480 to 1440x3200 (Portrait primary, Landscape supported)
* Minimum column width is set to 400px to ensure readability and usability.
*/
const screenWidth = window.innerWidth;
const minColumnWidth = 320;
const numColumns = screenWidth <= 320 ? 1 : Math.floor(screenWidth / minColumnWidth);
const baseColumnSpacing = screenWidth / numColumns;