jamztang/CSStickyHeaderFlowLayout
CSStickyHeaderFlowLayout
CSStickyHeaderFlowLayout 是一个针对 iOS UICollectionView 的专门布局包装器。它提供了一个粘性头部列表组件，其中分段头部在滚动过程中保持固定在屏幕顶部。
该项目实现了视差头部效果，允许背景图像以不同于前景内容的速度移动以创造深度感。它还包括根据用户滚动位置展开或收缩的动画头部图像。
该布局管理基于坐标的视图重定位和动态帧计算以处理视觉过渡。它利用基于偏移量的滚动追踪和线性插值缩放来控制移动过程中头部的透明度和大小。
Features
- Collection View Layouts - Provides a custom UICollectionView layout engine for rendering lists with flexible scrolling and sticky animations.
- List Interface Frameworks - Implements a specialized library for managing complex scrolling lists with custom header behaviors on iOS.
- iOS UI Layout - Provides a framework for defining the positioning and sizing of complex, animated collection views on iOS.
- Sticky Section Headings - Pins section headings to the top of the viewport to maintain category visibility during scrolling.
- UICollectionView - Provides a custom layout wrapper for UICollectionView that implements sticky section headers and parallax effects.
- Sticky and Parallax Navigation Headers - Implements a scrolling mechanism that creates visual depth by moving background header images at different speeds than foreground content.
- Sticky Header Pinning - Pins section headers to the top of the viewport to maintain context as the user scrolls through the list.
- Scroll-Responsive Animations - Animates header images to expand or collapse based on the user's scroll position.
- Visual Property Interpolators - Changes the scale and opacity of header images based on the ratio of the current scroll distance.
- Dynamic Item Size Calculators - Computes the size and position of cells and headers at runtime to support sticky positioning within a scroll container.
- Scroll-Driven Interaction Triggers - Calculates view positions relative to scroll offsets to trigger parallax animations and header resizing.
- View Coordinate Transformations - Implements logic to update screen coordinates of views during scroll events to simulate pinned header effects.
- List And Grid Views - Sticky header layout for collection views.
- UI Components - Implement collection views with sticky header functionality.
