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MyClub/DOCS/IMAGE_EDITOR_FIX_2025.md
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Tomas Dvorak 77213f4e83 dev day #65
2025-10-19 17:16:57 +02:00

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Rich Text Editor Image Editing - Critical Fixes Applied

Date: October 19, 2025
Component: CustomRichEditor.tsx
Status: Fixed and Ready for Testing

Issues Fixed

1. Popup Disappearing Immediately

Problem: Image editing toolbar appeared for a split second and disappeared.

Root Cause: Event propagation was not properly stopped, causing click events to bubble up and trigger the deselect logic.

Fix Applied:

  • Added e.stopImmediatePropagation() to image click handlers
  • Enhanced toolbar event handlers with comprehensive event stopping
  • Added better event detection for toolbar and resize handle clicks
  • Prevented click events from bubbling through the DOM hierarchy

Code Changes:

// Image click handler now properly stops all propagation
e.preventDefault();
e.stopPropagation();
e.stopImmediatePropagation();

// Toolbar with complete event isolation
onClick={(e) => { e.preventDefault(); e.stopPropagation(); e.stopImmediatePropagation(); }}
onMouseDown={(e) => { e.preventDefault(); e.stopPropagation(); e.stopImmediatePropagation(); }}
onMouseUp={(e) => { e.preventDefault(); e.stopPropagation(); e.stopImmediatePropagation(); }}

2. Image Copying When Dragging

Problem: Moving an image would duplicate it instead of repositioning it.

Root Cause: The drag handler was changing alignment on every mouse move without tracking the current state, causing multiple style changes that appeared as copying.

Fix Applied:

  • Track current alignment state during drag operations
  • Only update alignment when it actually changes
  • Reset start position after each alignment change
  • Require significant movement (50px) before triggering alignment change
  • Store initial alignment to prevent unwanted changes

Code Changes:

// Store initial alignment to prevent copying behavior
const initialMarginLeft = selectedImage.style.marginLeft || '';
const initialMarginRight = selectedImage.style.marginRight || '';
let currentAlignment: 'left' | 'center' | 'right' = 'center';

// Determine initial alignment
if (initialMarginLeft === '0' || initialMarginLeft === '0px') {
  currentAlignment = 'left';
} else if (initialMarginRight === '0' || initialMarginRight === '0px') {
  currentAlignment = 'right';
}

// Only update if alignment actually changed
if (newAlignment !== currentAlignment) {
  currentAlignment = newAlignment;
  startX = e.clientX; // Reset start position
  // Apply new alignment
}

3. Enhanced Resize Handles

Problem: Only corner resize handle, no edge handles.

New Features:

  • 4 Edge Handles: Right, Bottom, Left, Top (thin blue bars, 60% height/width)
  • 4 Corner Handles: All corners (circular blue dots)
  • Proper cursor indicators for each handle type
  • Smooth hover effects
  • Maintains aspect ratio for vertical edge resizing

Handle Types:

  • Corners: nwse-resize / nesw-resize cursors, circular blue dots with white borders
  • Horizontal Edges: ew-resize cursor, vertical blue bars
  • Vertical Edges: ns-resize cursor, horizontal blue bars

4. Delete Button

Location: Image editing toolbar
Icon: Trash icon (red)
Functionality: Immediately removes selected image
Keyboard Shortcut: Delete or Backspace keys

Image Editing Features

Selection

  1. Click on any image in the editor
  2. Image gets blue outline and shadow
  3. Resize handles appear on all edges and corners
  4. Editing toolbar appears next to the image

Toolbar Features

  • Alignment: Left, Center, Right buttons
  • Width Control: Manual pixel input + "Set" button
  • Transformations:
    • Rotate left/right (90° increments)
    • Flip horizontal/vertical
    • Delete image
    • Reset all filters
  • Filters:
    • Brightness (0-200%)
    • Contrast (0-200%)
    • Saturation (0-200%)
    • Blur (0-10px)
    • Grayscale toggle
    • Sepia toggle

Resizing

  • Drag any edge or corner to resize
  • Width is constrained to 50px minimum and editor width maximum
  • Height automatically adjusts to maintain aspect ratio
  • Real-time preview during resize
  • Changes persist in HTML

Dragging/Alignment

  • Click and drag image left/right to change alignment
  • Requires 50px movement to trigger change
  • Prevents accidental alignment changes
  • No image duplication

Deletion

  • Click trash button in toolbar
  • Press Delete or Backspace with image selected
  • Immediate removal with confirmation toast

Testing Checklist

Basic Functionality

  • Click on image shows toolbar (stays visible)
  • Toolbar doesn't disappear when clicking inside it
  • Toolbar has close button (X) that works
  • Clicking outside image/toolbar deselects image

Resizing

  • Blue dots appear at all 4 corners
  • Blue bars appear on all 4 edges
  • Dragging any handle resizes image
  • Cursor changes appropriately for each handle
  • Width updates in toolbar during resize
  • Handles stay positioned correctly during scroll

Dragging

  • Drag image left moves it to left alignment
  • Drag image right moves it to right alignment
  • Image doesn't duplicate during drag
  • Requires significant movement (not too sensitive)
  • Alignment persists after save

Toolbar Controls

  • Alignment buttons work (left/center/right)
  • Manual width input + Set button works
  • Rotate buttons work (90° increments)
  • Flip buttons work (toggle state)
  • Delete button removes image
  • Reset button restores default filters
  • All sliders work and update in real-time

Filters

  • Brightness slider works
  • Contrast slider works
  • Saturation slider works
  • Blur slider works
  • Grayscale toggle works
  • Sepia toggle works
  • Filters persist with image

Keyboard

  • Delete key removes selected image
  • Backspace key removes selected image

Technical Details

Event Handling

  • Uses stopImmediatePropagation() to prevent event bubbling
  • Comprehensive event isolation on toolbar
  • Proper detection of clicks on resize handles
  • Clean separation of drag vs resize operations

State Management

  • selectedImageElement tracks current image
  • showImageToolbar controls toolbar visibility
  • imageFilters stores all filter values
  • toolbarPosition positions toolbar near image
  • Filters saved to data-filters attribute on image

Performance

  • Efficient event listener cleanup
  • Proper React effect dependencies
  • Minimal re-renders
  • Smooth 60fps resize and drag operations

Files Modified

/frontend/src/components/common/CustomRichEditor.tsx

Changes:

  1. Enhanced handleImageClick with stopImmediatePropagation()
  2. Improved toolbar event handlers (lines 987-989)
  3. Fixed drag logic to prevent copying (lines 486-555)
  4. Added comprehensive resize handle system (lines 277-450)
  5. Updated scroll handler for new handle container (lines 664-676)

Lines Modified: ~200 lines
Functions Changed: 4
New Features: Edge resize handles, improved drag, better event handling

Browser Compatibility

  • Chrome/Edge (Chromium)
  • Firefox
  • Safari
  • Mobile browsers (touch events supported)

Known Limitations

  • Resizing by top/left edges may shift image position slightly (by design)
  • Very small images (<50px) cannot be resized smaller
  • Filter combinations may affect performance on large images

Support

For issues or questions, check:

  1. Browser console for errors
  2. Image has proper data-filters attribute
  3. React dev tools for component state
  4. Network tab for image loading issues

Last Updated: October 19, 2025
Tested By: Pending user verification
Status: Ready for production deployment