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cryptpad/www/whiteboard/inner.js

633 lines
22 KiB
JavaScript

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define([
'jquery',
'/bower_components/chainpad-crypto/crypto.js',
'/common/toolbar3.js',
'json.sortify',
'/common/common-util.js',
'/bower_components/nthen/index.js',
'/common/sframe-common.js',
'/common/common-interface.js',
'/api/config',
'/common/common-realtime.js',
'/customize/pages.js',
'/customize/messages.js',
'/customize/application_config.js',
'/common/common-thumbnail.js',
'/whiteboard/colors.js',
'/bower_components/chainpad/chainpad.dist.js',
'/bower_components/secure-fabric.js/dist/fabric.min.js',
'/bower_components/file-saver/FileSaver.min.js',
'css!/bower_components/bootstrap/dist/css/bootstrap.min.css',
'less!/bower_components/components-font-awesome/css/font-awesome.min.css',
'less!/customize/src/less2/main.less',
], function (
$,
Crypto,
Toolbar,
JSONSortify,
Util,
nThen,
SFCommon,
UI,
ApiConfig,
CommonRealtime,
Pages,
Messages,
AppConfig,
Thumb,
Colors,
ChainPad)
{
var saveAs = window.saveAs;
var APP = window.APP = {
$: $
};
var Fabric = APP.Fabric = window.fabric;
var stringify = function (obj) {
return JSONSortify(obj);
};
var toolbar;
var andThen = function (common) {
var config = {};
/* Initialize Fabric */
var canvas = APP.canvas = new Fabric.Canvas('cp-app-whiteboard-canvas', {
containerClass: 'cp-app-whiteboard-canvas-container'
});
var $canvas = $('canvas');
var $controls = $('#cp-app-whiteboard-controls');
var $canvasContainer = $('canvas').parents('.cp-app-whiteboard-canvas-container');
var $pickers = $('#cp-app-whiteboard-pickers');
var $colors = $('#cp-app-whiteboard-colors');
var $cursors = $('#cp-app-whiteboard-cursors');
var $deleteButton = $('#cp-app-whiteboard-delete');
var $toggle = $('#cp-app-whiteboard-toggledraw');
var $width = $('#cp-app-whiteboard-width');
var $widthLabel = $('label[for="cp-app-whiteboard-width"]');
var $opacity = $('#cp-app-whiteboard-opacity');
var $opacityLabel = $('label[for="cp-app-whiteboard-opacity"]');
// Brush
var readOnly = false;
var brush = {
color: '#000000',
opacity: 1
};
var createCursor = function () {
var w = canvas.freeDrawingBrush.width;
var c = canvas.freeDrawingBrush.color;
var size = w > 30 ? w+2 : w+32;
$cursors.html('<canvas width="'+size+'" height="'+size+'"></canvas>');
var $ccanvas = $cursors.find('canvas');
var ccanvas = $ccanvas[0];
var ctx = ccanvas.getContext('2d');
var centerX = size / 2;
var centerY = size / 2;
var radius = w/2;
ctx.beginPath();
ctx.arc(centerX, centerY, radius, 0, 2 * Math.PI, false);
ctx.fillStyle = c;
ctx.fill();
ctx.lineWidth = 1;
ctx.strokeStyle = brush.color;
ctx.stroke();
ctx.beginPath();
ctx.moveTo(size/2, 0); ctx.lineTo(size/2, 10);
ctx.moveTo(size/2, size); ctx.lineTo(size/2, size-10);
ctx.moveTo(0, size/2); ctx.lineTo(10, size/2);
ctx.moveTo(size, size/2); ctx.lineTo(size-10, size/2);
ctx.strokeStyle = '#000000';
ctx.stroke();
var img = ccanvas.toDataURL("image/png");
$controls.find('.cp-app-whiteboard-selected > img').attr('src', img);
canvas.freeDrawingCursor = 'url('+img+') '+size/2+' '+size/2+', crosshair';
};
var updateBrushWidth = function () {
var val = $width.val();
canvas.freeDrawingBrush.width = Number(val);
$widthLabel.text(Messages._getKey("canvas_widthLabel", [val]));
$('#cp-app-whiteboard-width-val').text(val + 'px');
createCursor();
};
updateBrushWidth();
$width.on('change', updateBrushWidth);
var updateBrushOpacity = function () {
var val = $opacity.val();
brush.opacity = Number(val);
canvas.freeDrawingBrush.color = Colors.hex2rgba(brush.color, brush.opacity);
$opacityLabel.text(Messages._getKey("canvas_opacityLabel", [val]));
$('#cp-app-whiteboard-opacity-val').text((Number(val) * 100) + '%');
createCursor();
};
updateBrushOpacity();
$opacity.on('change', updateBrushOpacity);
var pickColor = function (current, cb) {
var $picker = $('<input>', {
type: 'color',
value: '#FFFFFF',
})
.on('change', function () {
var color = this.value;
cb(color);
}).appendTo($pickers);
setTimeout(function () {
$picker.val(current);
$picker.click();
});
};
var setColor = function (c) {
c = Colors.rgb2hex(c);
brush.color = c;
canvas.freeDrawingBrush.color = Colors.hex2rgba(brush.color, brush.opacity);
APP.$color.css({
'color': c,
});
createCursor();
};
var palette = AppConfig.whiteboardPalette || [
'red', 'blue', 'green', 'white', 'black', 'purple',
'gray', 'beige', 'brown', 'cyan', 'darkcyan', 'gold', 'yellow', 'pink'
];
$('.cp-app-whiteboard-palette-color').on('click', function () {
var color = $(this).css('background-color');
setColor(color);
});
APP.draw = true;
var toggleDrawMode = function () {
canvas.deactivateAll().renderAll();
APP.draw = !APP.draw;
canvas.isDrawingMode = APP.draw;
$toggle.text(APP.draw ? Messages.canvas_disable : Messages.canvas_enable);
if (APP.draw) { $deleteButton.hide(); }
else { $deleteButton.show(); }
};
$toggle.click(toggleDrawMode);
var deleteSelection = function () {
if (canvas.getActiveObject()) {
canvas.getActiveObject().remove();
}
if (canvas.getActiveGroup()) {
canvas.getActiveGroup()._objects.forEach(function (el) {
el.remove();
});
canvas.discardActiveGroup();
}
canvas.renderAll();
config.onLocal();
};
$deleteButton.click(deleteSelection);
$(window).on('keyup', function (e) {
if (e.which === 46) { deleteSelection (); }
});
var setEditable = function (bool) {
APP.editable = bool;
if (readOnly && bool) { return; }
if (bool) { $controls.css('display', 'flex'); }
else { $controls.hide(); }
canvas.isDrawingMode = bool ? APP.draw : false;
if (!bool) {
canvas.deactivateAll();
canvas.renderAll();
}
canvas.forEachObject(function (object) {
object.selectable = bool;
});
$canvasContainer.find('canvas').css('border-color', bool? 'black': 'red');
};
var saveImage = APP.saveImage = function () {
var defaultName = "pretty-picture.png";
UI.prompt(Messages.exportPrompt, defaultName, function (filename) {
if (!(typeof(filename) === 'string' && filename)) { return; }
$canvas[0].toBlob(function (blob) {
saveAs(blob, filename);
});
});
};
APP.FM = common.createFileManager({});
APP.upload = function (title) {
var canvas = $canvas[0];
APP.canvas.deactivateAll().renderAll();
canvas.toBlob(function (blob) {
blob.name = title;
APP.FM.handleFile(blob);
});
};
var initializing = true;
var $bar = $('#cp-toolbar');
var Title;
var cpNfInner;
var metadataMgr;
config = {
readOnly: readOnly,
patchTransformer: ChainPad.NaiveJSONTransformer,
// cryptpad debug logging (default is 1)
// logLevel: 0,
validateContent: function (content) {
try {
JSON.parse(content);
return true;
} catch (e) {
console.log("Failed to parse, rejecting patch");
return false;
}
}
};
var addColorToPalette = function (color, i) {
if (readOnly) { return; }
var $color = $('<span>', {
'class': 'cp-app-whiteboard-palette-color',
})
.css({
'background-color': color,
})
.click(function () {
var c = Colors.rgb2hex($color.css('background-color'));
setColor(c);
})
.on('dblclick', function (e) {
e.preventDefault();
if (!APP.editable) { return; }
pickColor(Colors.rgb2hex($color.css('background-color')), function (c) {
$color.css({
'background-color': c,
});
palette.splice(i, 1, c);
APP.updateLocalPalette(palette);
setColor(c);
});
});
$colors.append($color);
};
var first = true;
var updatePalette = function (newPalette) {
if (first || stringify(palette) !== stringify(newPalette)) {
palette = newPalette;
$colors.html('<div class="hidden">&nbsp;</div>');
palette.forEach(addColorToPalette);
first = false;
}
};
var updateLocalPalette = APP.updateLocalPalette = function (newPalette) {
updatePalette(newPalette);
var metadata = JSON.parse(JSON.stringify(metadataMgr.getMetadata()));
metadata.palette = newPalette;
metadataMgr.updateMetadata(metadata);
config.onLocal();
};
var makeColorButton = function ($container) {
var $testColor = $('<input>', { type: 'color', value: '!' });
// if colors aren't supported, bail out
if ($testColor.attr('type') !== 'color' ||
$testColor.val() === '!') {
console.log("Colors aren't supported. Aborting");
return;
}
var $color = APP.$color = $('<button>', {
id: "cp-app-whiteboard-color-picker",
title: Messages.canvas_chooseColor,
'class': "fa fa-square cp-toolbar-rightside-button",
})
.on('click', function () {
pickColor($color.css('background-color'), function (color) {
setColor(color);
});
});
setColor('#000');
$container.append($color);
return $color;
};
var stringifyInner = function (textValue) {
var obj = {
content: textValue,
metadata: metadataMgr.getMetadataLazy()
};
// stringify the json and send it into chainpad
return stringify(obj);
};
var onLocal = config.onLocal = function () {
if (initializing) { return; }
if (readOnly) { return; }
var content = stringifyInner(canvas.toDatalessJSON());
APP.realtime.contentUpdate(content);
};
var addImageToCanvas = function (img) {
var w = img.width;
var h = img.height;
if (w<h) {
img.width = img.width * (300/img.height);
img.height = 300;
} else {
img.height = img.height * (300/img.width);
img.width = 300;
}
var cImg = new Fabric.Image(img, { left:0, top:0, angle:0, });
APP.canvas.add(cImg);
onLocal();
};
var initThumbnails = function () {
var oldThumbnailState;
var privateDat = metadataMgr.getPrivateData();
if (!privateDat.thumbnails) { return; }
var hash = privateDat.availableHashes.editHash ||
privateDat.availableHashes.viewHash;
var href = privateDat.pathname + '#' + hash;
var mkThumbnail = function () {
if (!hash) { return; }
if (initializing) { return; }
if (!APP.realtime) { return; }
var content = APP.realtime.getUserDoc();
if (content === oldThumbnailState) { return; }
var D = Thumb.getResizedDimensions($canvas[0], 'pad');
Thumb.fromCanvas($canvas[0], D, function (err, b64) {
oldThumbnailState = content;
Thumb.setPadThumbnail(common, href, b64);
});
};
window.setInterval(mkThumbnail, Thumb.UPDATE_INTERVAL);
window.setTimeout(mkThumbnail, Thumb.UPDATE_FIRST);
};
config.onInit = function (info) {
updateLocalPalette(palette);
readOnly = metadataMgr.getPrivateData().readOnly;
Title = common.createTitle({});
var configTb = {
displayed: ['title', 'useradmin', 'spinner', 'share', 'userlist', 'newpad', 'limit'],
title: Title.getTitleConfig(),
metadataMgr: metadataMgr,
readOnly: readOnly,
realtime: info.realtime,
sfCommon: common,
$container: $bar,
$contentContainer: $('#cp-app-whiteboard-canvas-area')
};
toolbar = APP.toolbar = Toolbar.create(configTb);
Title.setToolbar(toolbar);
var $rightside = toolbar.$rightside;
/* save as template */
if (!metadataMgr.getPrivateData().isTemplate) {
var templateObj = {
rt: info.realtime,
getTitle: function () { return metadataMgr.getMetadata().title; }
};
var $templateButton = common.createButton('template', true, templateObj);
$rightside.append($templateButton);
}
/* add an export button */
var $export = common.createButton('export', true, {}, saveImage);
$rightside.append($export);
if (common.isLoggedIn()) {
common.createButton('savetodrive', true, {}, function () {})
.click(function () {
UI.prompt(Messages.exportPrompt, document.title + '.png',
function (name) {
if (name === null || !name.trim()) { return; }
APP.upload(name);
});
}).appendTo($rightside);
}
var $forget = common.createButton('forget', true, {}, function (err) {
if (err) { return; }
setEditable(false);
});
$rightside.append($forget);
common.createButton('hashtag', true).appendTo($rightside);
if (!readOnly) {
makeColorButton($rightside);
// Embed image
var onUpload = function (e) {
var file = e.target.files[0];
var reader = new FileReader();
reader.onload = function () {
var img = new Image();
img.onload = function () {
addImageToCanvas(img);
};
img.src = reader.result;
};
reader.readAsDataURL(file);
};
common.createButton('', true)
.attr('title', Messages.canvas_imageEmbed)
.removeClass('fa-question').addClass('fa-file-image-o')
.click(function () {
$('<input>', {type:'file'}).on('change', onUpload).click();
}).appendTo($rightside);
var fileDialogCfg = {
onSelect: function (data) {
if (data.type === 'file') {
var mt = '<media-tag src="' + data.src + '" data-crypto-key="cryptpad:' + data.key + '"></media-tag>';
common.displayMediatagImage($(mt), function (err, $image) {
Util.blobURLToImage($image.attr('src'), function (imgSrc) {
var img = new Image();
img.onload = function () { addImageToCanvas(img); };
img.src = imgSrc;
});
});
return;
}
}
};
common.initFilePicker(fileDialogCfg);
APP.$mediaTagButton = $('<button>', {
title: Messages.filePickerButton,
'class': 'cp-toolbar-rightside-button fa fa-picture-o',
style: 'font-size: 17px'
}).click(function () {
var pickerCfg = {
types: ['file'],
where: ['root'],
filter: {
fileType: ['image/']
}
};
common.openFilePicker(pickerCfg);
}).appendTo($rightside);
}
metadataMgr.onChange(function () {
var md = metadataMgr.getMetadata();
if (md.palette) {
updateLocalPalette(md.palette);
}
});
};
config.onReady = function (info) {
if (APP.realtime !== info.realtime) {
APP.realtime = info.realtime;
}
var userDoc = APP.realtime.getUserDoc();
var isNew = false;
var newDoc = '';
if (userDoc === "" || userDoc === "{}") { isNew = true; }
if (userDoc !== "") {
var hjson = JSON.parse(userDoc);
if (hjson && hjson.metadata) {
metadataMgr.updateMetadata(hjson.metadata);
}
if (typeof (hjson) !== 'object' || Array.isArray(hjson) ||
(hjson.metadata && typeof(hjson.metadata.type) !== 'undefined' &&
hjson.metadata.type !== 'whiteboard')) {
var errorText = Messages.typeError;
UI.errorLoadingScreen(errorText);
throw new Error(errorText);
}
newDoc = hjson.content;
} else {
Title.updateTitle(Title.defaultTitle);
}
nThen(function (waitFor) {
if (newDoc) {
canvas.loadFromJSON(newDoc, waitFor(function () {
console.log('loaded');
canvas.renderAll();
}));
}
}).nThen(function () {
setEditable(!readOnly);
initializing = false;
config.onLocal();
UI.removeLoadingScreen();
initThumbnails();
if (readOnly) { return; }
if (isNew) {
common.openTemplatePicker();
}
});
};
config.onRemote = function () {
if (initializing) { return; }
var userDoc = APP.realtime.getUserDoc();
var json = JSON.parse(userDoc);
var remoteDoc = json.content;
canvas.loadFromJSON(remoteDoc, function () {
canvas.renderAll();
if (json.metadata) {
metadataMgr.updateMetadata(json.metadata);
}
});
var content = canvas.toDatalessJSON();
if (content !== remoteDoc) { common.notify(); }
if (readOnly) { setEditable(false); }
};
config.onAbort = function () {
// inform of network disconnect
setEditable(false);
toolbar.failed();
UI.alert(Messages.common_connectionLost, undefined, true);
};
config.onConnectionChange = function (info) {
setEditable(info.state);
if (info.state) {
initializing = true;
UI.findOKButton().click();
} else {
UI.alert(Messages.common_connectionLost, undefined, true);
}
};
cpNfInner = common.startRealtime(config);
metadataMgr = cpNfInner.metadataMgr;
cpNfInner.onInfiniteSpinner(function () {
setEditable(false);
UI.confirm(Messages.realtime_unrecoverableError, function (yes) {
if (!yes) { return; }
common.gotoURL();
});
});
canvas.on('mouse:up', onLocal);
$('#cp-app-whiteboard-clear').on('click', function () {
canvas.clear();
onLocal();
});
$('#save').on('click', function () {
saveImage();
});
common.onLogout(function () { setEditable(false); });
};
var main = function () {
var common;
nThen(function (waitFor) {
$(waitFor(function () {
UI.addLoadingScreen();
var $div = $('<div>').append(Pages['/whiteboard/']());
$('body').append($div.html());
}));
SFCommon.create(waitFor(function (c) { APP.common = common = c; }));
}).nThen(function (/*waitFor*/) {
andThen(common);
});
};
main();
});