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index.html
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<!DOCTYPE html
PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Form Designer</title>
<link href="ribbon/ribbon.css" rel="stylesheet" type="text/css" />
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.1/jquery.js"></script>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/fabric.js/4.1.0/fabric.js"></script>
<script type="text/javascript" src="ribbon/ribbon.js"></script>
<style>
body {
background-color: #c9cdd2;
}
.ribbon-section>p>input {
width: 50px;
}
.ribbon-section>p>span {
width: 100px;
}
#textJSON {
height: 40px;
max-height: 70px;
}
#imageLoader {
visibility: hidden;
}
</style>
</head>
<body>
<div id="ribbon">
<span class="ribbon-window-title">Form Designer</span>
<div class="ribbon-tab" id="file-tab">
<span class="ribbon-title">File</span>
<div class="ribbon-section">
<div class="button ribbon-button" id="btnOpen">
<img src="icons/normal/open-page.png" alt="Open" />
<span class="label">Open Image</span>
</div>
</div>
<div class="ribbon-section">
<div class="button ribbon-button" id="btnSaveJSON">
<img src="icons/normal/save-page.png" alt="Save" />
<span class="label">Save as JSON</span>
</div>
</div>
<div class="ribbon-section">
<div class="button ribbon-button" id="btnLoad">
<img src="icons/normal/open-table.png" alt="Load" />
<span class="label">Load JSON</span>
</div>
</div>
<div class="ribbon-section">
<textarea id="textJSON">
</textarea>
</div>
<div class="ribbon-section">
<div class="button ribbon-button" id="btnDownloadSVG">
<img src="icons/normal/save-page.png" alt="Save" />
<span class="label">Save as SVG</span>
</div>
</div>
<div id='dwn'></div>
</div>
<div class="ribbon-tab" id="format-tab">
<span class="ribbon-title">Edit</span>
<div class="ribbon-csection">
<span class="section-title"></span>
<div class="ribbon-button ribbon-button-large" id="addRectangle">
<span class="button-title">Add<br />Rectangle</span>
<img class="ribbon-icon ribbon-normal" src="icons/normal/new-table.png" />
<img class="ribbon-icon ribbon-hot" src="icons/hot/new-table.png" />
<img class="ribbon-icon ribbon-disabled" src="icons/disabled/new-table.png" />
</div>
<div class="ribbon-button ribbon-button-large" id="deleteSelectedObject">
<span class="button-title">Delete selected <br />Object</span>
<img class="ribbon-icon ribbon-normal" src="icons/normal/delete-table.png" />
</div>
<div class="ribbon-button ribbon-button-large" id="clearCanvas">
<span class="button-title">Clear Canvas</span>
<img class="ribbon-icon ribbon-normal" src="icons/normal/delete-page.png" />
</div>
</div>
<div class="ribbon-section">
<p>
<span>top:</span>
<input type="text" id="topCoord">
<input type="button" id="setTopCoord" value="set">
</p>
<p>
<span>left:</span>
<input type="text" id="leftCoord">
<input type="button" id="setLeftCoord" value="set">
</p>
</div>
<div class="ribbon-section">
<p>
<span>width:</span>
<input type="text" id="objectWidth">
<input type="button" id="setWidth" value="set">
</p>
<p>
<span>height:</span>
<input type="text" id="objectHeight">
<input type="button" id="setHeight" value="set">
</p>
</div>
<div class="ribbon-section">
<p>
<span>name:</span>
<input type="text" id="objectName">
<input type="button" id="setName" value="set">
</p>
<p>
<span>type:</span>
<input type="text" id="objectType">
<input type="button" id="setType" value="set">
</p>
</div>
</div>
<div class="ribbon-tab" id="next-tab">
<span class="ribbon-title">Navigation</span>
<div class="ribbon-section">
<span class="section-title"></span>
<div class="ribbon-button ribbon-button-large" id="zoomOut">
<span class="button-title">Zoom Out</span>
<img class="ribbon-icon ribbon-normal" src="icons/normal/icon_zoomout.png" />
</div>
<div class="ribbon-button ribbon-button-large" id="zoomIn">
<span class="button-title">Zoom In</span>
<img class="ribbon-icon ribbon-normal" src="icons/normal/icon_zoomin.png" />
</div>
<div class="ribbon-button-large">
<span class="button-title">scale</span>
<input id="slide" type="range" min="1" max="100" step="1" value="10">
<div id="sliderAmount"></div>
</div>
<div class="ribbon-button ribbon-button-large" id="move">
<span class="button-title">CTRL to move <br />ALL</span>
<img class="ribbon-icon ribbon-normal" src="icons/normal/bullet-orange.png" />
</div>
<div class="ribbon-button ribbon-button-large" id="toggleScroll">
<span class="button-title">Toggle Scrollbar <br />ON/OFF</span>
<img class="ribbon-icon ribbon-normal" src="icons/normal/icon_printpreview.png" />
</div>
</div>
<div class="ribbon-section">
<span class="section-title"></span>
<div class="ribbon-button ribbon-button-small" id="left">
<span class="button-title">left</span>
<img class="ribbon-icon ribbon-normal" src="icons/hot/left.png" />
</div>
<div class="ribbon-button ribbon-button-small" id="right">
<span class="button-title">right</span>
<img class="ribbon-icon ribbon-normal" src="icons/hot/right.png" />
</div>
</div>
<div class="ribbon-section">
<div class="ribbon-button ribbon-button-small" id="up">
<span class="button-title">up</span>
<img class="ribbon-icon ribbon-normal" src="icons/hot/up.png" />
</div>
<div class="ribbon-button ribbon-button-small" id="down">
<span class="button-title">down</span>
<img class="ribbon-icon ribbon-normal" src="icons/hot/down.png" />
</div>
</div>
</div>
</div>
<div id="canvas-container">
<canvas id="imageCanvas" width="800" height="900"></canvas>
</div>
<form>
<input type="file" id="imageLoader" name="imageLoader" />
</form>
<script>
$(document).ready(function () {
$('#ribbon').ribbon();
// diable ctr to move at start
$('#move').disable();
// to get access to the canvas per console
var canvas = window.canvas = new fabric.Canvas('imageCanvas');
var panning = false;
var ctrlDown = false;
var copiedObjects = new Array();
function zoomIn() {
canvas.setZoom(canvas.getZoom() + 1 / $('#slide').val());
};
function zoomOut() {
canvas.setZoom(canvas.getZoom() - 1 / $('#slide').val());
}
function saveCanvasToJSON() {
var atts = ['name', 'objectType'];
$('#textJSON').html(JSON.stringify(canvas.toJSON(atts)));
};
function loadJSONToCanvas() {
canvas.loadFromJSON($('#textJSON').val());
canvas.renderAll();
};
function moveCanvasDown() {
var units = 10;
var delta = new fabric.Point(0, units);
canvas.relativePan(delta);
};
function moveCanvasUp() {
var units = 10;
var delta = new fabric.Point(0, -units);
canvas.relativePan(delta);
};
function moveCanvasRight() {
var units = 10;
var delta = new fabric.Point(units, 0);
canvas.relativePan(delta);
};
function moveCanvasLeft() {
var units = 10;
var delta = new fabric.Point(-units, 0);
canvas.relativePan(delta);
};
function addNewRectangle() {
var rect = new fabric.Rect({
left: 100,
top: 100,
fill: 'transparent',
stroke: 'black',
width: 100,
height: 100,
strokeWidth: 1,
});
canvas.add(rect);
};
function deleteSelectedObject() {
var selected = canvas.getActiveObject();
if (selected != null)
selected.remove();
};
// toggle browser scrollbar on and off
function toggleScroll() {
if ($('body').css("overflow") != 'hidden')
$('body').css("overflow", "hidden");
else
$('body').css("overflow", "auto");
};
function updateTextFields() {
var selected = canvas.getActiveObject();
if (selected != null) {
$('#objectWidth').val(selected.width);
$('#objectHeight').val(selected.height);
$('#objectName').val(selected.name);
$('#objectType').val(selected.objectType);
$('#topCoord').val(selected.top);
$('#leftCoord').val(selected.left);
}
};
function handeArrowMoving(e) {
// e is the key event
var movementDelta = 2
var activeObject = canvas.getActiveObject();
if (e.keyCode === 37) {
e.preventDefault(); // Prevent the default action
if (activeObject) {
var a = activeObject.get('left') - movementDelta;
activeObject.set('left', a);
}
} else if (e.keyCode === 39) {
e.preventDefault(); // Prevent the default action
if (activeObject) {
var a = activeObject.get('left') + movementDelta;
activeObject.set('left', a);
}
} else if (e.keyCode === 38) {
e.preventDefault(); // Prevent the default action
if (activeObject) {
var a = activeObject.get('top') - movementDelta;
activeObject.set('top', a);
}
} else if (e.keyCode === 40) {
e.preventDefault(); // Prevent the default action
if (activeObject) {
var a = activeObject.get('top') + movementDelta;
activeObject.set('top', a);
}
}
if (activeObject) {
activeObject.setCoords();
canvas.renderAll();
} else if (activeGroup) {
activeGroup.setCoords();
canvas.renderAll();
}
};
function handleCopyPaste(e) {
//If ctrl is pressed, set ctrlDown to true
if (e.keyCode == 17) ctrlDown = true;
//Handle ctrl+c
if (ctrlDown && e.keyCode == 67) {
//reset array with copied objects
copiedObjects = [];
var activeObject = canvas.getActiveObject();
if (activeObject) { //If one item is selected then acriveObject will be true
copiedObjects.push(activeObject); //push our selected item into the array
}
};
//handle ctrl+v
if (ctrlDown && e.keyCode == 86) {
var count = 0;
if (copiedObjects.length == 1) {
//check if we can handle async cloning
if (fabric.util.getKlass(copiedObjects[0].type).async) {
copiedObjects[0].clone(function (clone) {
pasteOne(clone);
});
} else { //Sync cloning
pasteOne(copiedObjects[0].clone());
}
}
}
};
function pasteOne(clone) {
clone.left += 100; //add 100 to the left position
clone.top += 100; //add 100 to the top position
clone.set('canvas', canvas); //Set the canvas attribute to our canvas
clone.setCoords(); //Must call this when we cahnged our coordinates
canvas.add(clone); //Add the item
};
// zoom on mousewheel
//$('.canvas-container').on('mousewheel', function (options) {
// var delta = options.originalEvent.wheelDelta;
// if (delta != 0) {
// if (delta > 0) {
// //zoomIn();
// var zoomFak = canvas.getZoom() + 1/$('#slide').val();
// canvas.setZoom(zoomFak);
// canvas.setHeight(canvas.getHeight() * zoomFak);
// canvas.setWidth(canvas.getWidth() * zoomFak);
//
// } else if (delta < 0) {
// //zoomOut();
// var zoomFak = canvas.getZoom() - 1/$('#slide').val();
// canvas.setZoom(zoomFak);
// canvas.setHeight(canvas.getHeight() /zoomFak);
// canvas.setWidth(canvas.getWidth() / zoomFak);
//
// }
// }
//
// //canvas.setWidth(canvas.getWidth() * 2);
//});
// init ribbon functions
$('.ribbon-button').click(function () {
var id = $(this).attr('id');
if (this.isEnabled()) {
if (id === 'btnOpen')
$('#imageLoader').click();
if (id === 'zoomIn')
zoomIn();
if (id === 'zoomOut')
zoomOut();
if (id === 'toggleScroll')
toggleScroll();
if (id === 'addRectangle')
addNewRectangle();
if (id === 'clearCanvas')
canvas.clear();
if (id === 'deleteSelectedObject')
deleteSelectedObject();
if (id === 'up')
moveCanvasUp();
if (id === 'down')
moveCanvasDown();
if (id === 'left')
moveCanvasLeft();
if (id === 'right')
moveCanvasRight();
if (id === 'btnLoad')
loadJSONToCanvas();
if (id === 'btnSaveJSON')
saveCanvasToJSON();
console.log(id);
}
});
$(document).on('keyup', function (e) {
if (e.keyCode == 17) ctrlDown = false;
});
// init key functions
$(document).on('keydown', function (e) {
// strg ctrl
if ((e.metaKey || e.ctrlKey) && !panning) {
// strg + c
panning = true;
$('#move').enable();
} else {
panning = false;
$('#move').disable();
}
// entf
if ((e.keyCode === 46))
deleteSelectedObject();
handeArrowMoving(e);
handleCopyPaste(e);
});
// init panning
canvas.on('mouse:move', function (e) {
updateTextFields();
if (panning && e && e.e) {
var x = e.e.movementX;
var y = e.e.movementY;
if (!x) {
x = e.e.screenX - previousEvent.e.screenX;
y = e.e.screenY - previousEvent.e.screenY;
}
var delta = new fabric.Point(x, y);
canvas.relativePan(delta);
}
previousEvent = e;
});
// init scaling line width fix
canvas.on('object:scaling', function (e) {
var obj = e.target;
if (obj.scaleX) {
obj.width *= obj.scaleX;
obj.height *= obj.scaleY;
obj.scaleX = 1;
obj.scaleY = 1;
}
});
// init slider value
$('#sliderAmount').html($("#slide").val());
// init slide
$('#slide').on('change', function (e) {
var value = $("#slide").val();
$("#sliderAmount").html($("#slide").val());
});
// init svg download
$('#btnDownloadSVG').click(function () {
var filedata = canvas.toSVG();
var locfile = new Blob([filedata], { type: "image/svg+xml;charset=utf-8" });
var locfilesrc = URL.createObjectURL(locfile);
$('#dwn').append("<a href=" + locfilesrc + " download='form.svg' style='padding-right: 5px;'>Download " + new Date().toLocaleTimeString() + "</a>");
});
$('#setWidth').click(function () {
var selected = canvas.getActiveObject();
if (selected != null) {
selected.width = $('#objectWidth').val() / selected.scaleX;
canvas.renderAll();
}
});
$('#setHeight').click(function () {
var selected = canvas.getActiveObject();
if (selected != null) {
selected.height = $('#objectHeight').val() / selected.scaleY;
canvas.renderAll();
}
});
$('#setTopCoord').click(function () {
var selected = canvas.getActiveObject();
if (selected != null) {
console.log(selected.getTop());
selected.top = $('#topCoord').val() / selected.scaleY;
canvas.renderAll();
}
});
$('#setLeftCoord').click(function () {
var selected = canvas.getActiveObject();
if (selected != null) {
selected.left = $('#leftCoord').val() / selected.scaleX;
canvas.renderAll();
}
});
$('#setName').click(function () {
var selected = canvas.getActiveObject();
if (selected != null) {
selected.name = $('#objectName').val();
canvas.renderAll();
}
});
$('#setType').click(function () {
var selected = canvas.getActiveObject();
if (selected != null) {
selected.objectType = $('#objectType').val();
canvas.renderAll();
}
});
// init img upload
$('#imageLoader').change(function () {
var reader = new FileReader();
reader.onload = function (event) {
var img = new Image();
img.onload = function () {
canvas.setBackgroundImage(img.src, canvas.renderAll.bind(canvas), {
originX: 'left',
originY: 'top',
left: 0,
top: 0
});
}
img.src = event.target.result;
}
reader.readAsDataURL(event.target.files[0]);
});
$('.canvas-container').css("margin", "auto");
});
</script>
</body>
</html>