This commit adds comprehensive zoom control capabilities for fixed-layout
e-book content, allowing users to zoom in, out, and reset zoom levels for
better readability and content inspection.
Key features added:
- Zoom control UI with +/- buttons and percentage display
- Keyboard shortcuts for zoom operations (Ctrl/Cmd +, -, 0)
- Mouse wheel zoom with Ctrl/Cmd modifier key
- Drag-to-pan functionality when zoomed in
- Smooth zoom transitions and state management
- Zoom constraints (min/max limits) to prevent over-zooming
Changes include:
- FixedLayout: Enhanced with zoom state management, drag handlers,
and keyboard/mouse event listeners for intuitive zoom control
- Reader UI: Added zoom control toolbar with visual feedback
- FixedLayout renderer integration with reader zoom controls
The zoom controls provide a seamless experience for users who need to
examine fixed-layout content more closely or adjust content size for
their preferred reading experience.
