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poster.js
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/*
poster.js
Poster Generator
2023-08-17 RannerDesign
Combine multiple images into one poster image and download jpg
v2.1.1 2024-06-01 New design with 3 structural options
v2.1.2 2024-06-19 Performance optimization
v2.1.4 2024-06-25 Stripe optimization by algorithm from fedja
v2.1.5 2024-06-27 Calculation no longer separate step
v2.1.6 2024-07-01 Bug fixes
v2.2.1 2024-10-12 Preset rows for stripes
*/
var EL, P, LOG;
document.addEventListener('DOMContentLoaded', posterInit);
// ------------------------------------------------------------
// Initialization
// ------------------------------------------------------------
function posterInit() {
P = {};
P.programVersion = 'Poster Generator v2.2.1';
P.lang = document.documentElement.lang ? document.documentElement.lang : 'en';
EL = getAllElementsWithID();
presetElements();
defineWaitCounters();
P.res = loadResources();
P.messages = new language_support({lang: P.lang});
P.messages.load(defineMessages());
LOG = true; // Enable console.log output
P.RT = new runtime_measurement({console: true});
P.log = new logmessage_manager(EL.messagearea, {timeout: 60, console: true, messages: msgkey => {return P.messages.getmsg(msgkey);}});
P.uploader = new dnd_file_uploader('uploadfilearea', 'imgfile', monitorInput);
P.timeout = 500;
clearData();
}
function presetElements() {
EL.version.innerHTML = P.programVersion;
setPosterType(1);
setOutputType(1);
EL.colcount1.value = '';
EL.rowcount1.value = '';
EL.singleWidth1.value = 240;
EL.singleHeight1.value = '';
EL.aspect1.value = '';
EL.fit11.checked = true;
EL.targetWidth2.value = 1440;
EL.targetHeight2.value = 960;
EL.rowcount2.value = '';
EL.rowgrid2.value = '';
EL.targetHeight3.value = 1440;
EL.targetWidth3.value = 960;
EL.colcount3.value = '';
EL.colgrid3.value = '';
EL.margins.value = '10';
EL.gaps.value = '5';
EL.bgcol.value = '#4f4f4f';
EL.borderwidth.value = '';
EL.borderstyle.value = '';
EL.bordercolor.value = '#000000';
EL.corner.value = '';
}
function defineWaitCounters() {
P.waitload = new waitCounter(
waits => {
EL.waiticon.style.backgroundColor = 'red';
EL.waitcount.innerHTML = waits;
},
waits => {
EL.waiticon.style.backgroundColor = '#00000000';
EL.waitcount.innerHTML = '';
if (waits < 1) {updateFileList();}
}
);
P.waitcanvas = new waitCounter(
waits => {
EL.waitcanvas.style.backgroundColor = 'red';
},
waits => {
EL.waitcanvas.style.backgroundColor = '#00000000';
}
);
}
function loadResources() {
const out = {svg: {}};
const svgSource = '<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" viewBox="0 0 256 256" enable-background="new 0 0 256 256" xml:space="preserve"><g><g><path fill="#000000" d="M128,217.4c4.1,0,7.3-3.3,7.3-7.4V73.3c0-4.1-3.3-7.4-7.3-7.4c-4.1,0-7.4,3.3-7.4,7.4V210C120.6,214.1,123.9,217.4,128,217.4z M163.8,217.4l0.4,0c3.9,0,7.1-3,7.3-7l7.8-136.7c0.2-4-2.9-7.6-7-7.8c-4-0.2-7.5,2.9-7.8,6.9l-7.8,136.7C156.7,213.7,159.7,217.2,163.8,217.4z M91.5,217.4l0.4,0c4.1-0.2,7.2-3.7,7-7.8L91.1,72.9c-0.2-4-3.8-7.1-7.8-6.9c-4.1,0.2-7.2,3.7-7,7.8l7.8,136.7C84.3,214.4,87.6,217.4,91.5,217.4z M201,51.4l-10,179.8H65.2L55,51.4H201L201,51.4z M93.5,24.8h69.1l3.6,11.9H89.9L93.5,24.8z M17.3,51.4h22.9L50.9,239c0.2,3.9,3.5,7,7.3,7h139.6c3.9,0,7.2-3.1,7.3-7l10.5-187.6h22.9c4.1,0,7.4-3.3,7.4-7.3c0-4.1-3.3-7.4-7.4-7.4h-57.7l-3.6-19.3c0-4.1-3.3-7.4-7.4-7.4H86.1c-4.1,0-7.4,3.3-7.4,7.4l-3.6,19.3H17.4c-4.1,0-7.4,3.3-7.4,7.4C10,48.1,13.3,51.4,17.3,51.4z"/></g></g></svg>';
const blob = new Blob([svgSource], {type: 'image/svg+xml'});
out.svg.wastebasket = URL.createObjectURL(blob);
return out;
}
// ------------------------------------------------------------
// Button: Delete photo selection
// ------------------------------------------------------------
function clearInput() {
EL.imgfile.value = '';
monitorInput();
}
// ------------------------------------------------------------
// Button: Load images
// ------------------------------------------------------------
function loadImage() {
const nPics2load = EL.imgfile.files.length;
if (nPics2load < 1) {
P.log.write('noimgsel', 'msgerr');
return false;
}
let nPic = P.pics.length;
Array.from(EL.imgfile.files).forEach(inputfile => {
if (LOG) {console.log('loadImage - inputfile', inputfile);}
P.waitload.ON();
let idx = 0 + nPic++;
P.pics[idx] = {file: inputfile};
P.order.push(idx);
const fr = new FileReader();
fr.onload = e => {
if (LOG) {console.log('FileReader loaded - fr', fr);}
const img = new Image();
img.onload = e => {
if (LOG) {console.log('Image loaded - img.length', img.src.length);}
if (img.width > 0 && img.height > 0) {
P.pics[idx].image = img;
P.pics[idx].width = img.width;
P.pics[idx].height = img.height;
P.pics[idx].ratio = img.width / img.height;
// if (LOG) {console.log('Image loaded - P.pics[idx]', P.pics[idx]);}
} else {
P.pics[idx].image = false;
P.log.write('zerowh', 'msgerr');
console.warn('loadImage - Empty image not loaded - idx, img', idx, img);
}
P.waitload.OFF();
};
img.src = fr.result;
};
fr.readAsDataURL(inputfile);
});
EL.imgfile.value = '';
monitorInput();
}
// ------------------------------------------------------------
// Button: Delete loaded images
// ------------------------------------------------------------
function clearData() {
P.order = [];
P.pics = [];
EL.imgfile.value = '';
if (EL.ctx) {EL.ctx.clearRect(0, 0, EL.canvas.width, EL.canvas.height);}
P.waitload.clear();
EL.filelist.innerHTML = '';
P.log.clear();
monitorInput();
}
// ------------------------------------------------------------
// Button: Poster type
// ------------------------------------------------------------
function setPosterType(type) {
const oldType = P.posterType;
switch (type) {
case 1:
P.posterType = 1;
EL.pp1.style.display = 'block';
EL.pp2.style.display = 'none';
EL.pp3.style.display = 'none';
EL.pt1.style.color = '#821717';
EL.pt2.style.color = '';
EL.pt3.style.color = '';
EL.pt1.style.background = '#bfbfbf';
EL.pt2.style.background = '';
EL.pt3.style.background = '';
break;
case 2:
P.posterType = 2;
EL.pp1.style.display = 'none';
EL.pp2.style.display = 'block';
EL.pp3.style.display = 'none';
EL.pt1.style.color = '';
EL.pt2.style.color = '#821717';
EL.pt3.style.color = '';
EL.pt1.style.background = '';
EL.pt2.style.background = '#bfbfbf';
EL.pt3.style.background = '';
break;
case 3:
P.posterType = 3;
EL.pp1.style.display = 'none';
EL.pp2.style.display = 'none';
EL.pp3.style.display = 'block';
EL.pt1.style.color = '';
EL.pt2.style.color = '';
EL.pt3.style.color = '#821717';
EL.pt1.style.background = '';
EL.pt2.style.background = '';
EL.pt3.style.background = '#bfbfbf';
break;
}
if (P.posterType != oldType) {P.calc = {};}
}
// ------------------------------------------------------------
// Button: Output type
// ------------------------------------------------------------
function setOutputType(type) {
switch (type) {
case 1:
P.outputType = 1;
EL.ot1.style.color = '#821717';
EL.ot2.style.color = '';
EL.ot1.style.background = '#bfbfbf';
EL.ot2.style.background = '';
document.querySelectorAll('.modeHTML').forEach(ele => {ele.style.display = 'none';});
document.querySelectorAll('.modeCanvas').forEach(ele => {ele.style.display = '';});
break;
case 2:
P.outputType = 2;
EL.ot1.style.color = '';
EL.ot2.style.color = '#821717';
EL.ot1.style.background = '';
EL.ot2.style.background = '#bfbfbf';
document.querySelectorAll('.modeHTML').forEach(ele => {ele.style.display = '';});
document.querySelectorAll('.modeCanvas').forEach(ele => {ele.style.display = 'none';});
break;
}
}
// ------------------------------------------------------------
// Button: Generate poster
// ------------------------------------------------------------
function makePoster() {
if (!calculate()) {return false;}
P.waitcanvas.ON();
P.RT.start('makePoster');
if (P.calc.postername) {
P.posterWindowName = P.calc.postername;
} else {
P.posterWindowName = 'poster' + P.posterType;
}
const finish = function() {
const calctime = P.RT.show('makePoster');
if (success) {
P.log.write(P.RT.showtime(calctime, P.messages.getmsg('postergen') + ': '));
} else {
P.log.write('posgenerr', 'msgerr');
}
P.waitcanvas.OFF();
updateFileList();
};
let success = false;;
switch (P.outputType) {
case 1:
setTimeout(() => {success = makeCanvas(); finish();}, P.timeout);
return 'makeCanvas';
case 2:
setTimeout(() => {success = makeNoCanvas(); finish();}, P.timeout);
return 'makeNoCanvas';
}
return false;
}
function makeCanvas() {
let border;
P.calc.windowWidth = P.calc.canvasWidth + 6; // adjustment by
P.calc.windowHeight = P.calc.canvasHeight - 10; // trial and error
P.canwindow = createWindow(P.posterWindowName,
'<title>Poster Ansicht</title>',
'<canvas id="canvas"></canvas>', {
width: P.calc.windowWidth,
height: P.calc.windowHeight,
top: parseInt(screen.height*0.1),
left: parseInt(screen.width*0.1)
});
if (!P.canwindow) {
P.log.write('wincreafail', 'msgerr');
return false;
}
EL.canvas = P.canwindow.document.getElementById("canvas");
EL.canvas.width = P.calc.canvasWidth;
EL.canvas.height = P.calc.canvasHeight;
EL.ctx = EL.canvas.getContext("2d");
EL.ctx.fillStyle = P.calc.bgcol;
EL.ctx.fillRect(0, 0, EL.canvas.width, EL.canvas.height);
EL.filelist.innerHTML = '';
P.calc.pos.forEach((item, ipos) => {
if (ipos < P.calc.n) {
if (P.calc.borderCSS || P.calc.corner) {
EL.ctx.save();
border = canvasBorderWithRoundedCorners(item.left, item.top, item.width, item.height, P.calc.corner);
EL.ctx.clip(border);
}
if (item.clip) {
EL.ctx.drawImage(P.pics[item.idx].image, item.clip.left, item.clip.top, item.clip.width, item.clip.height, item.left, item.top, item.width, item.height);
} else {
EL.ctx.drawImage(P.pics[item.idx].image, item.left, item.top, item.width, item.height);
}
if (P.calc.borderCSS || P.calc.corner) {
EL.ctx.restore();
EL.ctx.save();
EL.ctx.lineWidth = P.calc.borderwidth;
EL.ctx.setLineDash(canvasLineDash());
EL.ctx.strokeStyle = P.calc.bordercolor;
EL.ctx.stroke(border);
EL.ctx.restore();
}
}
});
return true;
}
function makeNoCanvas() {
let divele, imgele, picnum = 1;
P.calc.windowWidth = P.calc.canvasWidth + 6; // adjustment by
P.calc.windowHeight = P.calc.canvasHeight - 10; // trial and error
P.nocanWindow = createWindow(P.posterWindowName,
'',
'<div id="nocanvas"></div>', {
width: P.calc.windowWidth,
height: P.calc.windowHeight,
top: parseInt(screen.height*0.1),
left: parseInt(screen.width*0.1)
});
if (!P.nocanWindow) {
P.log.write('wincreafail', 'msgerr');
return false;
}
HTelementChild(P.nocanWindow.document.head, 'title', 'Poster Ansicht');
HTelementChild(P.nocanWindow.document.head, 'style', `
img {box-sizing: border-box;}
.modimg {position: fixed; z-index: 90; left: 0; top: 0; width: 100%; height: 100%; overflow: hidden; background-color: rgba(0,0,0,0.75); display: none;}
.modimg > div {position: relative; width: max-content; height: max-content; background-color: #efefef; margin: 24px auto; padding: 16px; border-radius: 7px;}
.modimg span {position: absolute; top: -18px; right: -18px; z-index: 91; color: #1f1f1f; background-color: #efefef; font-family: Arial; font-size: 48px; font-weight: bold; text-align: center; line-height: 36px; height: 36px; width: 36px; border-radius: 36px;}
.modimg span:hover {color: #efefef; background-color: #1f1f1f; text-decoration: none; cursor: pointer;}
.modimg button {position: absolute; top: 50%; z-index: 91; color: #202020; text-shadow: 0 0 7px white; background-color: transparent; border: none; font-size: 48px;}
.modimg button.right {right: -30px;}
.modimg button.left {left: -30px;}
.modimg button:hover {color: #606060; text-shadow: 0 0 7px #602020; cursor: pointer;}
.modimg figure {margin: 0;}
.modimg img {position: relative; max-width: 90vw; max-height: 90vh;}
.modimg figcaption {text-align: center;}`);
HTelementChild(P.nocanWindow.document.head, 'script', [
modalPic.toString(),
modalPicClose.toString(),
modalPicNext.toString(),
modalButtonVisibility.toString(),
saveFileViaDownload.toString(),
keyAction.toString(),
HTelementChild.toString()
].join("\n"));
EL.nocanvas = P.nocanWindow.document.getElementById("nocanvas");
EL.nocanvas.style.width = P.calc.canvasWidth;
EL.nocanvas.style.height = P.calc.canvasHeight;
EL.nocanvas.style.backgroundColor = P.calc.bgcol;
EL.nocanvas.style.position = 'relative';
EL.filelist.innerHTML = '';
P.calc.pos.forEach((item, ipos) => {
if (ipos < P.calc.n) {
divele = HTelementChild(EL.nocanvas, 'div', '', {
position: 'absolute',
top: item.top + 'px',
left: item.left + 'px',
width: item.width + 'px',
height: item.height + 'px'
});
imgele = divele.appendChild(P.pics[item.idx].image.cloneNode(true));
imgele.id = 'pic' + picnum++;
imgele.setAttribute('alt', P.pics[item.idx].file.name);
imgele.setAttribute('onclick', 'modalPic(this);');
imgele.style.width = item.width + 'px';
imgele.style.height = item.height + 'px';
if (item.fit) {imgele.style.objectFit = item.fit;}
if (P.calc.borderCSS) {imgele.style.border = P.calc.borderCSS;}
if (P.calc.cornerCSS) {imgele.style.borderRadius = P.calc.cornerCSS;}
}
});
HTelementChild(P.nocanWindow.document.body, 'div', '', {}, {id: 'modalPic', class: 'modimg'});
HTelementChild(P.nocanWindow.document.body, 'script', "document.body.addEventListener('keydown', keyAction);");
return true;
}
function canvasBorderWithRoundedCorners(left, top, width, height, radius) {
const border = new Path2D();
const w90 = 0.5 * Math.PI, w180 = Math.PI, w270 = 1.5 * Math.PI, w360 = 2 * Math.PI;
radius = radius > 0 ? radius : 0;
border.moveTo(left + radius, top);
border.lineTo(left + width - radius, top);
border.arc(left + width - radius, top + radius, radius, w270, w360);
border.lineTo(left + width, top + height - radius);
border.arc(left + width - radius, top + height - radius, radius, 0, w90);
border.lineTo(left + radius, top + height);
border.arc(left + radius, top + height - radius, radius, w90, w180);
border.lineTo(left, top + radius);
border.arc(left + radius, top + radius, radius, w180, w270);
border.closePath();
return border;
}
function canvasLineDash() {
if (P.calc.borderdash) {
return P.calc.borderdash.replaceAll(',', ' ').trim().split(/[\s,\t,\n]+/).map(x => {return parseInt(x);});
} else {
return [];
}
}
function createWindow(winName, winHead, winBody, winFeatures) {
const windowFeatures = featureString(Object.assign({
toolbar: 'no',
location: 'no',
directories: 'no',
status: 'no',
menubar: 'no',
scrollbars: 'no',
resizable: 'yes',
width: 960,
height: 640,
top: 10,
left: 10
}, winFeatures));
const newWindow = window.open('', winName, windowFeatures);
if (!newWindow) {
console.warn('createWindow failure - winFeatures:', winFeatures);
return false;
}
if (winHead) {newWindow.document.head.innerHTML = winHead;}
if (winBody) {newWindow.document.body.innerHTML = winBody;}
return newWindow;
}
function featureString(features) {
let parts = [];
Object.entries(features).forEach(([k, v]) => {
if (v === true) {
parts.push(k);
} else {
parts.push(k + '=' + v);
}
});
return parts.join(', ');
}
// ------------------------------------------------------------
// NoCanvas window special functions
// ------------------------------------------------------------
function HTelementChild(parent, tag, innerHTML='', style={}, attrib={}) {
const newele = document.createElement(tag);
newele.innerHTML = innerHTML;
for (item in style) {newele.style[item] = style[item];}
for (item in attrib) {newele.setAttribute(item, attrib[item]);}
parent.appendChild(newele);
return newele;
}
function keyAction(event) {
if (event.ctrlKey && event.key == 's') {
saveFileViaDownload(document.documentElement.innerHTML, 'poster.html', 'text/html');
event.preventDefault();
event.stopPropagation();
return;
}
if (event.key == 'ArrowRight' || event.key == 'PageDown') {
modalPicNext('N');
event.preventDefault();
event.stopPropagation();
return;
}
if (event.key == 'ArrowLeft' || event.key == 'PageUp') {
modalPicNext('P');
event.preventDefault();
event.stopPropagation();
return;
}
if (event.key == 'Home') {
modalPicNext('F');
event.preventDefault();
event.stopPropagation();
return;
}
if (event.key == 'End') {
modalPicNext('L');
event.preventDefault();
event.stopPropagation();
return;
}
if (event.key == 'Escape') {
modalPicClose(true);
event.preventDefault();
event.stopPropagation();
return;
}
}
function saveFileViaDownload(content, fileName, contentType) {
const a = document.createElement('a');
const data = new Blob([content], { type: contentType});
a.href = URL.createObjectURL(data);
a.download = fileName;
document.body.appendChild(a);
a.click();
}
function modalPic(ele) {
const modalPic = document.getElementById('modalPic');
modalPic.innerHTML = '';
modalPic.addEventListener('click', modalPicClose);
const divele = HTelementChild(modalPic, 'div');
const closebutton = HTelementChild(divele, 'span', '×');
const rightbutton = HTelementChild(divele, 'button', '▶', {}, {class: 'right', onclick: 'modalPicNext(\'N\'); event.stopPropagation();'});
const leftbutton = HTelementChild(divele, 'button', '◀', {}, {class: 'left', onclick: 'modalPicNext(\'P\'); event.stopPropagation();'});
const figure = HTelementChild(divele, 'figure');
const img = HTelementChild(figure, 'img');
img.src = ele.src;
img.refid = ele.id;
modalButtonVisibility(img.refid);
const figcaption = HTelementChild(figure, 'figcaption', ele.alt);
modalPic.style.display = 'block';
}
function modalPicClose(force=false) {
const modalPic = document.getElementById('modalPic');
const closebutton = modalPic.querySelector('span');
if (event.target == modalPic || event.target == closebutton || force) {
modalPic.innerHTML = '';
modalPic.style.display = 'none';
}
}
function modalPicNext(pos) {
let picNum, targetPic;
const nocanvas = document.getElementById('nocanvas');
const modalPic = document.getElementById('modalPic');
if (!modalPic) {return false;}
const img = modalPic.querySelector('img');
if (!img) {return false;}
const picCount = nocanvas.querySelectorAll('img').length;
const curPicNum = parseInt(img.refid.substr(3));
picNum = parseInt(pos);
if (picNum > 0) {
targetPic = document.getElementById('pic' + picNum);
} else {
targetPic = false;
switch (pos) {
case 'F':
targetPic = document.getElementById('pic1');
break;
case 'L':
targetPic = document.getElementById('pic' + picCount);
break;
case 'N':
picNum = curPicNum + 1;
if (picNum > 0 && picNum <= picCount) {targetPic = document.getElementById('pic' + picNum);}
break;
case 'P':
picNum = curPicNum - 1;
if (picNum > 0 && picNum <= picCount) {targetPic = document.getElementById('pic' + picNum);}
break;
}
}
if (targetPic) {
img.src = targetPic.src;
img.refid = targetPic.id;
modalButtonVisibility(img.refid);
modalPic.querySelector('figcaption').innerHTML = targetPic.alt;
}
}
function modalButtonVisibility(refid) {
const modalPic = document.getElementById('modalPic');
const picCount = nocanvas.querySelectorAll('img').length;
const picNum = parseInt(refid.substr(3));
const right = modalPic.querySelector('button.right');
const left = modalPic.querySelector('button.left');
left.style.display = picNum <= 1 ? 'none' : '';
right.style.display = picNum >= picCount ? 'none' : '';
}
// ------------------------------------------------------------
// Calculation
// ------------------------------------------------------------
function calculate() {
if (P.pics.length > 0) {
P.RT.start('calculate');
getDialogueParameters();
const finish = function() {
const calctime = P.RT.show('calculate');
if (success) {
P.log.write(P.RT.showtime(calctime, P.messages.getmsg('calcdone') + ': '));
} else {
P.log.write('calcfail', 'msgerr');
}
};
let success = false;
switch (P.posterType) {
case 1: // Grid
setTimeout(() => {success = calculate1(); finish();}, P.timeout);
return 1;
case 2: // Horizontal stripes
setTimeout(() => {success = calculate2(); finish();}, P.timeout);
return 2;
case 3: // Vertical stripes
setTimeout(() => {success = calculate3(); finish();}, P.timeout);
return 3;
}
} else {return false;}
}
function getDialogueParameters() {
// Read all user entry and convert appropriately
let key;
const pt = P.posterType.toString();
const ptL = pt.length;
P.calc = {};
EL['pp0'].querySelectorAll('input').forEach((input) => {
switch(input.type) {
case 'radio':
key = input.checked ? input.name : false; break;
default:
key = input.id;
}
if (key) {P.calc[key] = input.value;}
});
EL['pp0'].querySelectorAll('select').forEach((sel) => {
key = sel.id;
if (key) {P.calc[key] = sel.value;}
});
EL['pp' + pt].querySelectorAll('input').forEach((input) => {
switch(input.type) {
case 'radio':
key = input.checked ? input.name : false; break;
default:
key = input.id;
}
if (key) {key = key.slice(-ptL) == pt ? key.slice(0, -ptL) : false;}
if (key) {P.calc[key] = input.value;}
});
EL['pp' + pt].querySelectorAll('select').forEach((sel) => {
key = sel.id;
if (key) {P.calc[key] = sel.value;}
});
if (P.calc.margins) {
const marginValue = P.calc.margins;
P.calc.margins = {};
marginSplit(marginValue, P.calc.margins, ['top', 'right', 'bottom', 'left']);
} else {
P.calc.margins = {};
}
marginSplit(P.calc.gaps, P.calc.margins, ['gapHorizontal', 'gapVertical']);
['colcount', 'rowcount', 'singleWidth', 'singleHeight', 'targetWidth', 'targetHeight', 'borderwidth', 'corner'].forEach(key => {
P.calc[key] = parseInt(P.calc[key] || 0);
});
['colgrid', 'rowgrid'].forEach(key => {
if (P.calc[key]) {
P.calc[key] = parseGritInput(P.calc[key]);
if (P.calc[key]) {P.calc.imagesToShow = P.calc[key].reduce((a, b) => a + b, 0);}
}
});
if (P.calc.borderwidth && P.outputType == 1 && !P.calc.borderstyle) {
P.calc.borderstyle = 'solid';
EL.borderstyle.value = 'solid';
}
P.calc.borderCSS = (P.calc.borderwidth && P.calc.borderstyle) ? P.calc.borderwidth + 'px ' + P.calc.borderstyle + ' ' + P.calc.bordercolor : '';
P.calc.cornerCSS = P.calc.corner ? P.calc.corner + 'px' : '';
P.calc.quality = parseFloat(P.calc.quality.replace(',', '.'));
if (!(P.calc.quality > 0.0 && P.calc.quality <= 1.0)) {
P.calc.quality = 0.9;
EL.quality.value = 0.9;
}
if (LOG) {console.log('getDialogueParameters - P.calc:', P.calc);}
}
function parseGritInput(grid) {
// Convert 1,2,3 ... or 3*4 to array with count of images per row (column)
let check = grid.split(/(?:\*|x|X)+/).map(Number);
if (check.some(isNaN) || check.length != 2) {
check = grid.split(/(?:,| )+/).map(Number);
if (check.some(isNaN)) {return false;}
return check;
} else {
let out = [];
for (let i=0; i<check[0]; i++) {out.push(check[1]);}
return out;
}
}
function marginSplit(margins, outobj, params) {
// Handle data entry for margins and gaps
const M = margins.split(',').map(m => parseInt(m));
switch (M.length) {
case 1:
params.forEach(p => {outobj[p] = M[0];});
return true;
case 2:
params.forEach((p, i) => {outobj[p] = M[i%2];});
return true;
case 3:
const J = [0, 1, 2, 1];
params.forEach((p, i) => {outobj[p] = M[J[i%4]];});
return true;
case 4:
params.forEach((p, i) => {outobj[p] = M[i%4];});
return true;
}
return false;
}
function calculate1() {
P.RT.start('calculate1');
P.calc.colcount = parseInt(P.calc.colcount);
if (!(P.calc.colcount > 0)) {
P.log.write('colcounterr', 'msgerr');
return false;
}
P.calc.rowcount = parseInt(P.calc.rowcount);
if (!(P.calc.rowcount > 0)) {P.calc.rowcount = Math.floor((P.order.length - 1)/P.calc.colcount) + 1;}
if (!(P.calc.rowcount > 0)) {
P.log.write('rowcounterr', 'msgerr');
return false;
}
if (!evaluateAspect()) {
P.log.write('illegalwha', 'msgerr');
return false;
}
P.calc.pos = [];
for (let i=0; i<P.order.length; i++) {
const newpos = {};
newpos.row = Math.floor(i/P.calc.colcount);
if (newpos.row >= P.calc.rowcount) {break;}
newpos.col = i % P.calc.colcount;
newpos.idx = P.order[i];
newpos.left = P.calc.margins.left + newpos.col*(P.calc.margins.gapVertical+P.calc.singleWidth);
newpos.top = P.calc.margins.top + newpos.row*(P.calc.margins.gapHorizontal+P.calc.singleHeight);
newpos.width = P.calc.singleWidth;
newpos.height = P.calc.singleHeight;
newpos.fit = P.calc.fit;
if (newpos.fit == 'contain') {
newpos.save = {};
['left', 'top', 'width', 'height'].forEach(key =>{
newpos.save[key] = newpos[key];
});
switch (Math.sign(P.pics[newpos.idx].width * P.calc.singleHeight - P.pics[newpos.idx].height * P.calc.singleWidth)) {
case 1:
newpos.height = Math.round(P.calc.singleWidth * P.pics[newpos.idx].height / P.pics[newpos.idx].width);
newpos.top += Math.floor((newpos.save.height-newpos.height)/2);
break;
case -1:
newpos.width = Math.round(P.calc.singleHeight * P.pics[newpos.idx].width / P.pics[newpos.idx].height);
newpos.left += Math.floor((newpos.save.width-newpos.width)/2);
break;
}
}
if (newpos.fit == 'cover') {
switch (Math.sign(P.pics[newpos.idx].width * P.calc.singleHeight - P.pics[newpos.idx].height * P.calc.singleWidth)) {
case 1:
const ww = Math.round(P.pics[newpos.idx].height * P.calc.singleWidth / P.calc.singleHeight);
newpos.clip = {
left: Math.floor((P.pics[newpos.idx].width-ww)/2),
top: 0,
width: ww,
height: P.pics[newpos.idx].height
};
break;
case -1:
hh = Math.round(P.pics[newpos.idx].width * P.calc.singleHeight / P.calc.singleWidth);
newpos.clip = {
left: 0,
top: Math.floor((P.pics[newpos.idx].height-hh)/2),
width: P.pics[newpos.idx].width,
height: hh
};
break;
}
}
P.calc.pos.push(newpos);
};
P.calc.n = P.calc.pos.length;
P.calc.canvasWidth = P.calc.margins.left + P.calc.margins.right + (P.calc.colcount-1)*P.calc.margins.gapHorizontal + P.calc.colcount*P.calc.singleWidth;
P.calc.canvasHeight = P.calc.margins.top + P.calc.margins.bottom + (P.calc.rowcount-1)*P.calc.margins.gapVertical + P.calc.rowcount*P.calc.singleHeight;
P.RT.show('calculate1');
return true;
}
function calculate2() {
P.RT.start('calculate2');
if (!(P.calc.targetWidth > 0)) {
P.log.write('pwiderr', 'msgerr');
return false;
}
if (!(P.calc.rowcount > 0 || P.calc.targetHeight > 0 || P.calc.imagesToShow > 0)) {
P.log.write('pheighmiss', 'msgerr');
return false;
}
P.calc.n = P.order.length;
P.calc.pos = [];
P.lookupParameters = {
P: {
dim: 'width',
pos: 'left',
key: 'row',
grid: 'rowgrid',
target: 'targetWidth',
canvas: 'canvasWidth',
margin1: P.calc.margins.left,
margin2: P.calc.margins.right,
gap: P.calc.margins.gapHorizontal
},
S: {
dim: 'height',
pos: 'top',
key: 'col',
target: 'targetHeight',
canvas: 'canvasHeight',
margin1: P.calc.margins.top,
margin2: P.calc.margins.bottom,
gap: P.calc.margins.gapVertical
},
stripeCount: P.calc.rowcount
};
if (!evaluateStripeRatios()) {
P.log.write('invalidwhc', 'msgerr');
return false;
}
if (P.calc.rowgrid) {
P.calc.stripeAssignments = setStripeAssignments(P.calc.rowgrid);
P.lookupParameters.stripeCount = P.calc.rowgrid.length;
P.calc.n = Math.min(P.calc.imagesToShow, P.order.length);
} else {
P.calc.stripeAssignments = optimizeSegmentationDynPro(P.calc.ratios, P.calc.nStripes);
}
calculateStripeParameters();
calculateStripePositions();
P.RT.show('calculate2');
return true;
}
function calculate3() {
P.RT.start('calculate3');
if (!(P.calc.targetHeight > 0)) {
P.log.write('pheighterr', 'msgerr');
return false;
}
if (!(P.calc.colcount > 0 || P.calc.targetWidth > 0 || P.calc.imagesToShow > 0)) {
P.log.write('pwidthmiss', 'msgerr');
return false;
}
P.calc.n = P.order.length;
P.calc.pos = [];
P.lookupParameters = {
S: {
dim: 'width',
pos: 'left',
key: 'row',
target: 'targetWidth',
canvas: 'canvasWidth',
margin1: P.calc.margins.left,
margin2: P.calc.margins.right,
gap: P.calc.margins.gapHorizontal
},
P: {
dim: 'height',
pos: 'top',
key: 'col',
grid: 'colgrid',
target: 'targetHeight',
canvas: 'canvasHeight',
margin1: P.calc.margins.top,
margin2: P.calc.margins.bottom,
gap: P.calc.margins.gapVertical
},
stripeCount: P.calc.colcount
};
if (!evaluateStripeRatios()) {
P.log.write('invalidhwc', 'msgerr');
return false;
}
console.log('calculate3:', P.calc);
if (P.calc.colgrid) {
P.calc.stripeAssignments = setStripeAssignments(P.calc.colgrid);
P.lookupParameters.stripeCount = P.calc.colgrid.length;
P.calc.n = Math.min(P.calc.imagesToShow, P.order.length);
} else {
P.calc.stripeAssignments = optimizeSegmentationDynPro(P.calc.ratios, P.calc.nStripes);
}
calculateStripeParameters();
calculateStripePositions();
P.RT.show('calculate3');
return true;
}
function evaluateAspect() {
// Calculate singleHeight and singleWidth based on aspect
P.RT.start('evaluateAspect');
if (P.calc.singleWidth > 0 && P.calc.singleHeight > 0) {return true;}
if (P.calc.aspect == '') {P.calc.aspect = 'D';}
P.calc.aspect = P.calc.aspect.replace(/,/g, ".");
const parts = P.calc.aspect.split(':');
if (parts.length == 2) {
P.calc.aspect = parseInt(parts[0]) / parseInt(parts[1]);
} else {
if ((parseFloat(P.calc.aspect) > 0)) {
P.calc.aspect = parseFloat(P.calc.aspect);
} else {
switch (P.calc.aspect.toLowerCase()) {
case 'e':
P.calc.aspect = P.pics[P.order[0]].ratio;
break;
case 'l':
P.calc.aspect = P.pics[P.order[P.order.length-1]].ratio;
break;
case 'd':
let n=0, s=0.0;
P.pics.forEach(pic => {n++; s += pic.ratio;});
P.calc.aspect = s / n;
break;
case 'm':
let rr, nhi=0, rhi;
const r = {};
P.pics.forEach(pic => {
rr = Math.round(pic.ratio * 1000) / 1000;
if (rr in r) {
r[rr]++;
} else {
r[rr] = 1;
}
if (r[rr] > nhi) {nhi = r[rr]; rhi = rr}
});
P.calc.aspect = rhi
break;
}
}
}
if (P.calc.singleWidth > 0) {
P.calc.singleHeight = Math.round(P.calc.singleWidth/P.calc.aspect);
}
if (P.calc.singleHeight > 0) {
P.calc.singleWidth = Math.round(P.calc.singleHeight*P.calc.aspect);
}
P.RT.show('evaluateAspect');
return (P.calc.singleWidth > 0 && P.calc.singleHeight > 0);
}
function evaluateStripeRatios() {
// Prepare ratio data and calculate number of poster rows
P.RT.start('evaluateStripeRatios');
const X = P.lookupParameters; let ratio;
P.calc.Rpics = 0;
P.calc.ratios = [];
P.order.forEach(idx => {
ratio = P.pics[idx][X.P.dim] / P.pics[idx][X.S.dim];
P.calc.Rpics += ratio;
P.calc.ratios.push(ratio);
P.calc.pos.push({idx: idx, primOrig: P.pics[idx][X.P.dim], secOrig: P.pics[idx][X.S.dim], ratio: ratio, cumratio: P.calc.Rpics});
});
if (P.calc[X.P.target] > 0 && P.calc[X.P.grid]) {
P.calc.nStripes = P.calc[X.P.grid].length;
} else if (P.calc[X.P.target] > 0 && X.stripeCount > 0) {
P.calc.nStripes = X.stripeCount;
} else if (P.calc[X.P.target] > 0 && P.calc[X.S.target] > 0) {
P.calc.nStripes = limiter(Math.round(Math.sqrt(P.calc.Rpics * P.calc[X.S.target] / P.calc[X.P.target])), 1, P.calc.n);
} else {
return false;
}
P.RT.show('evaluateStripeRatios');
return true;
}
function setStripeAssignments(grid) {
// Generate image assignment to stripe positions based on rowgrid or colgrid
P.RT.start('setStripeAssignments');
const out = []
grid.forEach((n, idx) => {
for (let i=0; i<n; i++) {out.push(idx);}
});
P.RT.show('setStripeAssignments');
return out;
}
function optimizeSegmentationDynPro(data, Nseg) {
// Split data array into Nseg segments with sum(data(i)) in each segment nearly same
// Dynamic programming, transscript from Asymptote program by fedja
// https://mathoverflow.net/questions/473701/
P.RT.start('optimizeSegmentationDynPro');
const n=data.length, m=Nseg;
if (!n || !m || m > n) {return false;}
if (m == 1) {return Array(n).fill(0);}
if (m == n) {return data.keys();}
let r=[0.0], rCum=[0.0]; // arrays indexed from 0, 1, ..., n
data.forEach((d,i) => {r[i+1] = d; rCum[i+1] = rCum[i]+d;});
const qqStart = 2 ** (Math.floor(Math.log(n)/Math.log(2)+1));
F = function(t) {return 1.0/(t+0.0001*rCum[n]/n);};
let S=[];
for (let i=0; i<=n; i++) {S[i] = F(rCum[i]);}