Arrow key support signing (#1143)

* Added Arrow Key functionality for the Sign page.

* Added Arrow Key functionality for the Sign page.

* Adjusted step size, so it is relative to the size of the draggable

* Enabled Arrow Key support also for Add-Image

---------

Co-authored-by: Eric <71648843+sbplat@users.noreply.github.com>
This commit is contained in:
t71rs 2024-04-30 19:02:12 +02:00 committed by GitHub
parent b71f6f93b1
commit d730c6a12f
No known key found for this signature in database
GPG Key ID: B5690EEEBB952194
1 changed files with 120 additions and 50 deletions

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@ -5,74 +5,130 @@ const DraggableUtils = {
pdfDoc: null,
pageIndex: 0,
documentsMap: new Map(),
lastInteracted: null,
init() {
interact(".draggable-canvas")
.draggable({
listeners: {
move: (event) => {
const target = event.target;
const x = (parseFloat(target.getAttribute("data-bs-x")) || 0) + event.dx;
const y = (parseFloat(target.getAttribute("data-bs-y")) || 0) + event.dy;
.draggable({
listeners: {
move: (event) => {
const target = event.target;
const x = (parseFloat(target.getAttribute("data-bs-x")) || 0)
+ event.dx;
const y = (parseFloat(target.getAttribute("data-bs-y")) || 0)
+ event.dy;
target.style.transform = `translate(${x}px, ${y}px)`;
target.setAttribute("data-bs-x", x);
target.setAttribute("data-bs-y", y);
target.style.transform = `translate(${x}px, ${y}px)`;
target.setAttribute("data-bs-x", x);
target.setAttribute("data-bs-y", y);
this.onInteraction(target);
},
this.onInteraction(target);
//update the last interacted element
this.lastInteracted = event.target;
},
})
.resizable({
edges: { left: true, right: true, bottom: true, top: true },
listeners: {
move: (event) => {
var target = event.target;
var x = parseFloat(target.getAttribute("data-bs-x")) || 0;
var y = parseFloat(target.getAttribute("data-bs-y")) || 0;
},
})
.resizable({
edges: { left: true, right: true, bottom: true, top: true },
listeners: {
move: (event) => {
var target = event.target;
var x = parseFloat(target.getAttribute("data-bs-x")) || 0;
var y = parseFloat(target.getAttribute("data-bs-y")) || 0;
// check if control key is pressed
if (event.ctrlKey) {
const aspectRatio = target.offsetWidth / target.offsetHeight;
// preserve aspect ratio
let width = event.rect.width;
let height = event.rect.height;
// check if control key is pressed
if (event.ctrlKey) {
const aspectRatio = target.offsetWidth / target.offsetHeight;
// preserve aspect ratio
let width = event.rect.width;
let height = event.rect.height;
if (Math.abs(event.deltaRect.width) >= Math.abs(event.deltaRect.height)) {
height = width / aspectRatio;
} else {
width = height * aspectRatio;
}
event.rect.width = width;
event.rect.height = height;
if (Math.abs(event.deltaRect.width) >= Math.abs(
event.deltaRect.height)) {
height = width / aspectRatio;
} else {
width = height * aspectRatio;
}
target.style.width = event.rect.width + "px";
target.style.height = event.rect.height + "px";
event.rect.width = width;
event.rect.height = height;
}
// translate when resizing from top or left edges
x += event.deltaRect.left;
y += event.deltaRect.top;
target.style.width = event.rect.width + "px";
target.style.height = event.rect.height + "px";
target.style.transform = "translate(" + x + "px," + y + "px)";
// translate when resizing from top or left edges
x += event.deltaRect.left;
y += event.deltaRect.top;
target.setAttribute("data-bs-x", x);
target.setAttribute("data-bs-y", y);
target.textContent = Math.round(event.rect.width) + "\u00D7" + Math.round(event.rect.height);
target.style.transform = "translate(" + x + "px," + y + "px)";
this.onInteraction(target);
},
target.setAttribute("data-bs-x", x);
target.setAttribute("data-bs-y", y);
target.textContent = Math.round(event.rect.width) + "\u00D7"
+ Math.round(event.rect.height);
this.onInteraction(target);
},
},
modifiers: [
interact.modifiers.restrictSize({
min: { width: 5, height: 5 },
}),
],
inertia: true,
modifiers: [
interact.modifiers.restrictSize({
min: {width: 5, height: 5},
}),
],
inertia: true,
});
//Arrow key Support for Add-Image and Sign pages
if(window.location.pathname.endsWith('sign') || window.location.pathname.endsWith('add-image')) {
window.addEventListener('keydown', (event) => {
//Check for last interacted element
if (!this.lastInteracted){
return;
}
// Get the currently selected element
const target = this.lastInteracted;
// Step size relatively to the elements size
const stepX = target.offsetWidth * 0.05;
const stepY = target.offsetHeight * 0.05;
// Get the current x and y coordinates
let x = (parseFloat(target.getAttribute('data-bs-x')) || 0);
let y = (parseFloat(target.getAttribute('data-bs-y')) || 0);
// Check which key was pressed and update the coordinates accordingly
switch (event.key) {
case 'ArrowUp':
y -= stepY;
event.preventDefault(); // Prevent the default action
break;
case 'ArrowDown':
y += stepY;
event.preventDefault();
break;
case 'ArrowLeft':
x -= stepX;
event.preventDefault();
break;
case 'ArrowRight':
x += stepX;
event.preventDefault();
break;
default:
return; // Listen only to arrow keys
}
// Update position
target.style.transform = `translate(${x}px, ${y}px)`;
target.setAttribute('data-bs-x', x);
target.setAttribute('data-bs-y', y);
DraggableUtils.onInteraction(target);
});
}
},
onInteraction(target) {
this.boxDragContainer.appendChild(target);
},
@ -88,9 +144,18 @@ const DraggableUtils = {
createdCanvas.setAttribute("data-bs-x", x);
createdCanvas.setAttribute("data-bs-y", y);
//Click element in order to enable arrow keys
createdCanvas.addEventListener('click', () => {
this.lastInteracted = createdCanvas;
});
createdCanvas.onclick = (e) => this.onInteraction(e.target);
this.boxDragContainer.appendChild(createdCanvas);
//Enable Arrow keys directly after the element is created
this.lastInteracted = createdCanvas;
return createdCanvas;
},
createDraggableCanvasFromUrl(dataUrl) {
@ -134,6 +199,11 @@ const DraggableUtils = {
},
deleteDraggableCanvas(element) {
if (element) {
//Check if deleted element is the last interacted
if (this.lastInteracted === element) {
// If it is, set lastInteracted to null
this.lastInteracted = null;
}
element.remove();
}
},