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Add signature navigation to PDF viewer toolbar

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This commit introduces a signature navigation feature in the PDF viewer:
- Removed zoom preset buttons to make space for the new toolbar.
- Added "Previous" and "Next" buttons for navigating signatures.
- Displayed a signature counter with signed/total signatures and a badge for unsigned signatures or completion status.
- Introduced state variables (`_totalSignatures`, `_signedSignatures`, `_unsignedSignatures`) to track signature progress.
- Implemented methods for navigating signatures (`GoToPreviousSignature`, `GoToNextSignature`, `UpdateSignatureCounterAsync`).
- Enhanced JavaScript with `getSignatureNavState`, `goToNextSignature`, and `goToPreviousSignature` for navigation logic.
- Updated CSS for the toolbar and signature navigation, including responsive adjustments and hover effects.
- Improved error handling during signature counter updates.
- Updated `RenderSignatureButtonsAsync` to refresh the signature counter after rendering.

These changes improve the user experience by enabling efficient navigation and tracking of signatures in the PDF viewer.
This commit is contained in:
tekh
2026-06-07 14:55:41 +02:00
parent 3f52858fe9
commit 09ff237ecc
3 changed files with 303 additions and 23 deletions
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81
EnvelopeGenerator.ReceiverUI/wwwroot/css/envelope-viewer.css
View File

@@ -216,30 +216,32 @@ body.resizing {
background: rgba(255, 255, 255, 0.98);
backdrop-filter: blur(20px);
border-radius: 12px;
padding: 0.75rem 1.75rem;
padding: 0.75rem 1.5rem;
display: flex;
align-items: center;
justify-content: space-between;
gap: 2rem;
gap: 1.5rem;
box-shadow:
0 4px 16px rgba(0, 0, 0, 0.1),
0 0 0 1px rgba(126, 34, 206, 0.1);
border: 1px solid rgba(126, 34, 206, 0.15);
flex-shrink: 0;
width: 90%;
max-width: 1200px;
width: 95%;
max-width: 1400px;
}
.pdf-toolbar__section {
display: flex;
align-items: center;
gap: 0.5rem;
flex-shrink: 0;
}
.pdf-toolbar__zoom-section {
gap: 0.75rem;
flex: 1;
max-width: 500px;
max-width: 400px;
min-width: 280px;
justify-content: center;
}
@@ -341,8 +343,8 @@ body.resizing {
.pdf-toolbar__zoom-slider {
-webkit-appearance: none;
width: 100%;
min-width: 240px;
max-width: 450px;
min-width: 180px;
max-width: 350px;
height: 6px;
border-radius: 3px;
background: linear-gradient(90deg,
@@ -395,6 +397,71 @@ body.resizing {
text-align: center;
}
/* Signature Navigation Styles */
.pdf-toolbar__signature-nav {
display: flex;
align-items: center;
gap: 0.375rem;
background: linear-gradient(135deg, rgba(126, 34, 206, 0.05) 0%, rgba(42, 82, 152, 0.05) 100%);
border: 1px solid rgba(126, 34, 206, 0.2);
border-radius: 10px;
padding: 0.25rem 0.5rem;
flex-shrink: 0;
}
.pdf-toolbar__btn--signature-nav {
min-width: 30px;
min-height: 30px;
padding: 0.25rem;
background: white;
border: 1px solid rgba(126, 34, 206, 0.25);
}
.pdf-toolbar__btn--signature-nav:hover:not(:disabled) {
background: linear-gradient(135deg, #7e22ce 0%, #2a5298 100%);
border-color: transparent;
}
.pdf-toolbar__btn--signature-nav:hover:not(:disabled) svg {
color: white;
}
.pdf-toolbar__signature-counter {
display: flex;
align-items: center;
gap: 0.375rem;
padding: 0 0.375rem;
}
.pdf-toolbar__signature-counter svg {
color: #7e22ce;
flex-shrink: 0;
}
.pdf-toolbar__signature-counter-text {
font-size: 0.8125rem;
font-weight: 600;
color: #1e293b;
white-space: nowrap;
}
.pdf-toolbar__signature-badge {
font-size: 0.625rem;
font-weight: 700;
padding: 0.1875rem 0.5rem;
border-radius: 5px;
background: linear-gradient(135deg, rgba(126, 34, 206, 0.1) 0%, rgba(42, 82, 152, 0.1) 100%);
color: #7e22ce;
text-transform: uppercase;
letter-spacing: 0.05em;
white-space: nowrap;
}
.pdf-toolbar__signature-badge--complete {
background: linear-gradient(135deg, rgba(16, 185, 129, 0.1) 0%, rgba(5, 150, 105, 0.1) 100%);
color: #059669;
}
.pdf-frame {
background: white;
border-radius: 16px;

156
EnvelopeGenerator.ReceiverUI/wwwroot/js/pdf-viewer.js
View File

@@ -455,6 +455,150 @@ window.pdfViewer = {
// Signature button functionality
signatureButtons: [],
appliedSignatures: [], // Track which signatures have been applied
/**
* Gets signature navigation state (for toolbar display)
* @returns {object} { total, signed, unsigned, currentIndex, canGoPrev, canGoNext }
*/
getSignatureNavState() {
const total = this.signatureButtons.length + this.appliedSignatures.length;
const signed = this.appliedSignatures.length;
const unsigned = this.signatureButtons.length;
// Find index of first unsigned signature button (if any)
let currentIndex = -1;
if (unsigned > 0) {
currentIndex = signed; // 0-based index of next signature to sign
}
return {
total: total,
signed: signed,
unsigned: unsigned,
currentIndex: currentIndex,
canGoPrev: signed > 0, // Can go to previous applied signature
canGoNext: unsigned > 0 // Can go to next unsigned signature
};
},
/**
* Navigates to the next unsigned signature button.
* Scrolls to button position and changes page if necessary.
*/
async goToNextSignature(dotNetRef) {
if (this.signatureButtons.length === 0) {
return false;
}
// Get first unsigned signature button
const button = this.signatureButtons[0];
const signatureId = parseInt(button.getAttribute('data-signature-id'));
// Find signature in original list to get page number
const signature = this._allSignatures?.find(s => s.id === signatureId);
if (!signature) {
return false;
}
// Change page if needed
if (signature.page !== this.pageNum) {
await this.goToPage(signature.page);
// Wait for page render and button re-creation
await new Promise(resolve => setTimeout(resolve, 300));
// Re-find button after page change
const newButton = this.signatureButtons.find(btn =>
parseInt(btn.getAttribute('data-signature-id')) === signatureId);
if (newButton) {
this.scrollToButton(newButton);
}
} else {
this.scrollToButton(button);
}
// Notify Blazor to update counter
if (dotNetRef) {
dotNetRef.invokeMethodAsync('OnSignatureNavChanged');
}
return true;
},
/**
* Navigates to the previous signature (last applied one).
* Scrolls to signature position and changes page if necessary.
*/
async goToPreviousSignature(dotNetRef) {
if (this.appliedSignatures.length === 0) {
return false;
}
// Get last applied signature
const lastSig = this.appliedSignatures[this.appliedSignatures.length - 1];
// Change page if needed
if (lastSig.page !== this.pageNum) {
await this.goToPage(lastSig.page);
await new Promise(resolve => setTimeout(resolve, 300));
}
// Find applied signature container
const container = document.querySelector(`.applied-signature[data-signature-id="${lastSig.id}"]`);
if (container) {
this.scrollToElement(container);
}
// Notify Blazor
if (dotNetRef) {
dotNetRef.invokeMethodAsync('OnSignatureNavChanged');
}
return true;
},
/**
* Scrolls to center a button in the viewport
*/
scrollToButton(button) {
const wrapper = this.canvas.closest('.pdf-canvas-wrapper');
if (!wrapper) return;
const buttonRect = button.getBoundingClientRect();
const wrapperRect = wrapper.getBoundingClientRect();
// Calculate scroll to center button
const scrollLeft = wrapper.scrollLeft + buttonRect.left - wrapperRect.left - (wrapperRect.width / 2) + (buttonRect.width / 2);
const scrollTop = wrapper.scrollTop + buttonRect.top - wrapperRect.top - (wrapperRect.height / 2) + (buttonRect.height / 2);
wrapper.scrollTo({
left: scrollLeft,
top: scrollTop,
behavior: 'smooth'
});
},
/**
* Scrolls to center an element in the viewport
*/
scrollToElement(element) {
const wrapper = this.canvas.closest('.pdf-canvas-wrapper');
if (!wrapper) return;
const elemRect = element.getBoundingClientRect();
const wrapperRect = wrapper.getBoundingClientRect();
const scrollLeft = wrapper.scrollLeft + elemRect.left - wrapperRect.left - (wrapperRect.width / 2) + (elemRect.width / 2);
const scrollTop = wrapper.scrollTop + elemRect.top - wrapperRect.top - (wrapperRect.height / 2) + (elemRect.height / 2);
wrapper.scrollTo({
left: scrollLeft,
top: scrollTop,
behavior: 'smooth'
});
},
/**
* Renders clickable signature buttons on the PDF canvas.
@@ -471,6 +615,7 @@ window.pdfViewer = {
}
this.dotNetReference = dotNetRef;
this._allSignatures = signatures; // Store for navigation
try {
// Filter signatures for current page
@@ -629,12 +774,23 @@ window.pdfViewer = {
const left = button.style.left;
const top = button.style.top;
// Find signature data for tracking
const signature = this._allSignatures?.find(s => s.id === signatureId);
// Remove button
if (button.parentNode) {
button.parentNode.removeChild(button);
}
this.signatureButtons.splice(buttonIndex, 1);
// Track applied signature
if (signature) {
this.appliedSignatures.push({
id: signatureId,
page: signature.page
});
}
// Create signature container
const signatureContainer = document.createElement('div');
signatureContainer.className = 'applied-signature';