套件詳情v3.3.0

thumbnailer

能夠從各種 MIME 類型的檔案產生縮圖的外掛程式。如果特定 MIME 類型不支援縮圖產生，則傳回替代圖示

AndroidiOSWebmacOSWindows

pub.dev API 文件原始碼

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安裝套件

flutter pub add thumbnailer

套件介紹

根據套件公開資料產生的選型評估，僅供參考。

Thumbnailer 是一個 Flutter 插件，可從各種 MIME 類型的檔案（如影像、文件和影片）產生縮圖。當檔案的 MIME 類型不支援縮圖產生時，它會回傳一個預設圖示。此插件支援多個平台，包括 Android、iOS、Web、macOS 和 Windows，非常適合跨平台應用中的檔案瀏覽與預覽功能。它簡化了顯示視覺預覽的流程，無需為每種檔案類型進行自訂實作。

適用情境

檔案總管介面
文件預覽畫面
媒體畫廊應用
資產管理工具
用戶上傳預覽

主要特色

支援多種MIME類型
不支援類型的備用圖示
跨平台相容性
簡單 API 結合
自動縮略圖生成

適合對象

開發檔案管理器的開發者
需要視覺文件預覽的應用程式
支援多種檔案類型的專案
跨平台桌面和移動應用
需要快速資產可視化的UI

使用建議

僅限支援的 MIME 類型
備用圖示可能無法自訂
性能取決於檔案大小
需要移動平台特定的權限
不適合高解析度輸出需求

原始 README

以下為關聯原始碼儲存庫的 README 原文快照，最新內容請造訪原始碼儲存庫。

thumbnailer

A Flutter plugin that is able to generate thumbnails for images, pdf and xlsx files

if thumbnail generation is not supported for specific mime type, then a fallback icon from FontAwesome is returned
supports registering custom mime type handlers for dynamic extendability
resulting thumbnail (or fallback icon) is flutter widget
supports custom resizing/styling of the resulting thumbnail

Why

In time of creation of this plugin, there was no available solution on pub.dev

Usage

To use this plugin, add thumbnailer as a dependency in your pubspec.yaml file.

Icons

By default, plugin provides following icons based on mimetype

MIME Type	Icon
`image`
`application/pdf`
`application/msword`
`application/vnd.openxmlformats-officedocument.wordprocessingml.document`
`application/vnd.oasis.opendocument.text`
`application/vnd.ms-excel`
`application/vnd.openxmlformats-officedocument.spreadsheetml.sheet`
`application/vnd.oasis.opendocument.spreadsheet`
`application/vnd.ms-powerpoint`
`application/vnd.openxmlformats-officedocument.presentationml.presentation`
`application/vnd.oasis.opendocument.presentation`
`text/plain`
`text/csv`
`application/x-archive`
`application/x-cpio`
`application/x-shar`
`application/x-iso9660-image`
`application/x-sbx`
`application/x-tar`
`application/x-bzip2`
`application/gzip`
`application/x-lzip`
`application/x-lzma`
`application/x-lzop`
`application/x-snappy-framed`
`application/x-xz`
`application/x-compress`
`application/zstd`
`application/java-archive`
`application/octet-stream`
`application/vnd.android.package-archive`
`application/vnd.ms-cab-compressed`
`application/x-7z-compressed`
`application/x-ace-compressed`
`application/x-alz-compressed`
`application/x-apple-diskimage`
`application/x-arj`
`application/x-astrotite-afa`
`application/x-b1`
`application/x-cfs-compressed`
`application/x-dar`
`application/x-dgc-compressed`
`application/x-freearc`
`application/x-gca-compressed`
`application/x-gtar`
`application/x-lzh`
`application/x-lzx`
`application/x-ms-wim`
`application/x-rar-compressed`
`application/x-stuffit`
`application/x-stuffitx`
`application/x-xar`
`application/x-zoo`
`application/zip`
`text/html`
`text/javascript`
`text/css`
`text/x-python`
`application/x-python-code`
`text/xml`
`application/xml`
`text/x-c`
`application/java`
`application/java-byte-code`
`application/x-java-class`
`application/x-csh`
`text/x-script.csh`
`text/x-fortran`
`text/x-h`
`application/x-ksh`
`text/x-script.ksh`
`application/x-latex`
`application/x-lisp`
`text/x-script.lisp`
`text/x-m`
`text/x-pascal`
`text/x-script.perl`
`application/postscript`
`text/x-script.phyton`
`application/x-bytecode.python`
`text/x-asm`
`application/x-bsh`
`application/x-sh`
`text/x-script.sh`
`text/x-script.zsh`
`default`

You can override these, or add custom one using Thumbnailer.addCustomMimeTypesToIconDataMappings

Generation strategies

Thunbnailer allows you to provide custom thumbnail based on dynamic variables like content of file. Basic implementacion have following generation strategies: