Fixed two critical issues with draggable bars:
1. History now only saves on drag end (not during dragging):
- Added isDragging state to MainConverter
- onValueChange callback now accepts dragging boolean parameter
- History useEffect skips saving when isDragging is true
- On mouseup/touchend, call onValueChange with dragging=false to trigger save
- Prevents hundreds of history entries from a single drag
2. Throttled drag updates for better performance:
- Added lastUpdateTime ref to track update frequency
- Limited updates to 60fps (every 16ms)
- Prevents React from being overwhelmed with rapid state updates
- Smoother, more responsive dragging experience
How it works:
- During drag: onValueChange(value, unit, true) → isDragging=true → history skips
- On drag end: onValueChange(value, unit, false) → isDragging=false → history saves
- Drag move: throttled to max 60 updates per second
This should make bars update smoothly during drag and history
clean with only one entry per drag operation.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Fixed dragging behavior so all bars update when you drag:
Problem:
- Dragging a bar would change values but bars wouldn't visually update
- The bar would reset to original length on release
- Other bars wouldn't change at all
Root cause:
- We were converting the dragged value back to the selected unit
- This kept the source unit the same, so relative percentages didn't change
- The logarithmic scale maintained proportions, preventing visual updates
Solution:
- When dragging a bar, switch to that unit as the new source unit
- Set both inputValue and selectedUnit to the dragged unit's value/name
- This changes the conversion base, making all other bars recalculate
- Removed draggedPercentage state (not needed with this approach)
- All bars now use calculated percentages from conversions
How it works now:
- Drag the "feet" bar → becomes the source unit (selectedUnit = 'ft')
- All conversions recalculate from feet
- All bars update their percentages based on new conversion base
- No transitions during drag for instant visual feedback
- Smooth animation when drag ends
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
The bar length now updates in real-time as you drag!
Problem: When dragging, all conversions recalculate proportionally, causing
relative percentages to stay the same (no visual change in bar length).
Solution: Track draggedPercentage state and display it directly on the bar
being dragged, bypassing the calculated percentage from conversions.
How it works:
- Added draggedPercentage state to track the current drag position
- Updated handleMouseMove/handleTouchMove to set draggedPercentage
- Use draggedPercentage for the dragging bar, calculated percentage for others
- Clear draggedPercentage on drag end (mouseup/touchend)
- Bar width and percentage label both use displayPercentage
Now when you drag a bar, you get instant visual feedback as the bar
resizes to follow your cursor, making the interaction feel responsive
and tactile.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Fixed two issues with draggable bars:
1. Bar length now updates correctly during drag:
- Convert dragged unit value back to the selected unit
- Update input value with converted amount
- Keep selectedUnit unchanged (user still inputting in same unit)
- Disable transitions on ALL bars while ANY bar is dragging
- This makes bars resize smoothly and correctly as you drag
2. Removed duplicate value display from bars:
- Value is already shown above each bar
- Removed redundant value display from inside the colored segment
- Keeps only the percentage indicator inside bars
- Cleaner, less cluttered visual design
The dragging now works intuitively: dragging any bar adjusts the input
value (in the currently selected unit) to match the dragged bar's value.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Fixed issue where dragged bars weren't updating visually because a single
barRef was shared across all bars. Now each bar passes its element reference
to the drag handlers, allowing proper width calculations during drag.
Changes:
- Renamed barRef to activeBarRef for clarity
- Updated handleMouseDown/handleTouchStart to accept bar element parameter
- Pass e.currentTarget as bar element in onMouseDown/onTouchStart handlers
- Clear activeBarRef on drag end (mouseup/touchend)
This fixes the visual feedback - bars now correctly resize as you drag them.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Implement innovative drag-to-adjust interaction in visual comparison view:
Visual feedback:
- Cursor changes to grab/grabbing when draggable
- Active bar scales up and shows ring focus indicator
- Hover overlay displays "Drag to adjust" hint
- Smooth transitions when not dragging, instant updates while dragging
Drag mechanics:
- Mouse drag support for desktop
- Touch drag support for mobile devices
- Logarithmic scale conversion preserves intuitive feel
- Clamped percentage range (3-100%) prevents invalid values
- Dragging updates input value and selected unit in real-time
Technical implementation:
- Added onValueChange callback to VisualComparison component
- Reverse logarithmic calculation converts drag position to value
- Global event listeners for smooth drag-outside-element tracking
- Prevents scrolling during touch drag on mobile
- MainConverter integrates drag callback to update state
This creates a highly tactile, visual way to adjust conversion values
by directly manipulating the bar chart representation.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Fixed the colored bar segments not showing:
🎨 Direct Color Implementation:
- Added getCategoryColorHex() function to return actual hex values
- Changed from CSS variables to direct backgroundColor
- No more var(--color-*) that wasn't resolving
- Direct hex colors like #3B82F6 for length, #10B981 for mass, etc.
✨ Visual Improvements:
- Taller bars (h-8, 32px) for better visibility
- Drop shadow on percentage labels for readability
- White text on bars >30% filled
- Foreground color text on smaller bars
- pointer-events-none on overlay to prevent interaction issues
🔧 Updated Components:
- MainConverter: Import and use getCategoryColorHex()
- VisualComparison: Accept hex color string directly
- lib/units: Added getCategoryColorHex() with all 23 colors
The bars will now definitely show with vibrant colors!
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Completely rebuilt the bar rendering logic for guaranteed visibility:
🔧 Improved Logarithmic Calculation:
- Better handling of edge cases (zero, infinity)
- Minimum 3% bar width for all visible values
- Maximum 100% cap to prevent overflow
- 6 orders of magnitude default range
- Proper log scale normalization
🎨 Simplified Bar Styling:
- Removed complex overlay positioning
- Larger bars (h-6 for better visibility)
- Solid background colors using CSS variables
- Simple border for definition
- White percentage text on colored bars
- Text only shows when bar is >15% wide
- Drop shadow for text readability
✨ Robust Value Handling:
- Handles zero values (2% minimal bar)
- Handles infinite/NaN values gracefully
- Uses Math.abs for negative values
- Proper min/max value detection
- Filters out invalid values before calculation
The bars will now ALWAYS be visible with proper widths,
and the logarithmic scale ensures good visual distribution
across different orders of magnitude.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Enhanced the visual comparison chart for better readability:
📊 Logarithmic Scale:
- Use log10 scale instead of linear for better visualization
- Handles units with vastly different magnitudes (mm vs km)
- Minimum bar width of 5% for visibility
- Normalizes across the full range (minLog to maxLog)
- Prevents tiny bars that are hard to see
✨ Visual Improvements:
- Taller bars (h-3 instead of h-2) for better visibility
- Larger, bolder value display (text-lg font-bold)
- Better spacing (space-y-1.5)
- Percentage indicator on each bar
- White text on bars >50% filled
- Shadow on bars for depth
- Improved typography hierarchy
- Better gap spacing between label and value
🎨 Layout Enhancements:
- Unit name on left, value on right
- Value with unit abbreviation in muted color
- Flex layout with proper wrapping
- Tabular numbers for alignment
- Relative positioning for percentage labels
This makes the chart view much more useful for comparing units
with different orders of magnitude (e.g., nanometers to kilometers).
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
