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chrisbanes/PhotoView

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18,824 Stars·3,909 Forks·Java·Apache-2.0·7 Aufrufebaseflow.com↗

PhotoView

PhotoView is a custom Android view implementation designed to display high-resolution images with native support for zoom and pan gestures. It provides a zoomable image view and a matrix controller to manage how images are scaled and translated within a mobile user interface.

The library handles the detection of pinch-to-zoom and tap gestures to enable interactive image navigation. It manages the transformation matrix of the image to ensure smooth magnification and provides viewport constraints to align photo edges with screen boundaries.

The project covers the broader requirements of mobile photo gallery development, including image scrolling, touch event delegation, and real-time tracking of view transformations.

Features

  • 2D Image Transformations - Uses coordinate matrices to manage the scaling and translation of high-resolution images within a view.
  • Interactive Image Viewers - Creating an interface where users can tap and interact with photos to trigger specific application actions or navigation.
  • Android Image Components - Provides a specialized Android view for high-resolution image viewing with zoom and pan support.
  • Transformation Controllers - A component for monitoring and managing the transformation matrix of an image within a mobile interface.
  • Gesture-Based Viewport Navigation - Implements a view that allows users to navigate a high-resolution photo viewport using touch gestures.
  • Zoomable Views - Provides a custom Android view specifically designed for zooming and panning images.
  • Touch Gesture Detectors - Detects and distinguishes between different touch interaction patterns such as taps, drags, and pinches.
  • Touch Gesture Libraries - Integrates multi-touch gesture listeners to enable smooth image magnification and movement.
  • Multi-Touch Gesture Systems - Implements a system for translating multi-finger pinch gestures into precise image zoom levels.
  • Viewport Constraints - Constrains the image panning area to ensure photo edges align correctly with the screen boundaries.
  • Photo Galleries - Provides the core interactive viewing components necessary for building a mobile photo gallery.
  • UI State Transition Logic - Tracks zoom and offset states to trigger automatic snapping of the image back to its original size.
  • Transformation State Tracking - Monitors changes to the image matrix to update the interface based on current zoom and scroll positions.
  • Image Components - Image view with support for multi-touch zooming and gestures.
  • Image Display and Processing - Zoomable image view implementation.
  • UI Components - ImageView with zoom and touch gestures.

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Häufig gestellte Fragen

Was macht chrisbanes/photoview?

PhotoView is a custom Android view implementation designed to display high-resolution images with native support for zoom and pan gestures. It provides a zoomable image view and a matrix controller to manage how images are scaled and translated within a mobile user interface.

Was sind die Hauptfunktionen von chrisbanes/photoview?

Die Hauptfunktionen von chrisbanes/photoview sind: 2D Image Transformations, Interactive Image Viewers, Android Image Components, Transformation Controllers, Gesture-Based Viewport Navigation, Zoomable Views, Touch Gesture Detectors, Touch Gesture Libraries.

Welche Open-Source-Alternativen gibt es zu chrisbanes/photoview?

Open-Source-Alternativen zu chrisbanes/photoview sind unter anderem: davemorrissey/subsampling-scale-image-view — This is a custom Android view designed for rendering high-resolution images using subsampling and tiling to prevent… hdodenhof/circleimageview — CircleImageView is a custom Android UI component that renders rectangular images as perfect circles with smooth… vinc3m1/roundedimageview — RoundedImageView is an Android library providing custom view implementations for rendering images with rounded… software-mansion/react-native-gesture-handler — React Native Gesture Handler is a declarative library that exposes the platform's native touch and gesture system to… hammerjs/hammer.js — Hammer.js is a library for recognizing touch gestures in web applications. It functions as a unified interface that… kivy/kivy — Kivy is a cross-platform Python GUI framework used to build graphical user interfaces that run on desktop and mobile…