syncfusion-flutter-pdf-viewer

# Syncfusion Flutter SfPdfViewer – UI Sample Generator ## Generate Dart Code for the User's Project *(default)* **Trigger keywords:** "how to", "add pdfviewer", "code sample", "show me", "example", "snippet", "integrate", "widget", "create sample", "flutter pdfviewer". **Purpose:** Scaffold a ready-to-run Flutter project with `syncfusion_flutter_pdfviewer` integrated **and** generate the requested feature code inside it — all in one pass. **Workflow:** ### Step 1 – Ask Clarifying Questions (once, upfront) Before doing anything else, ask the user: 1. **Project target:** Does a Flutter project already exist, or should a new one be created? 2. **File placement:** Should the generated code go into an existing file (e.g., `main.dart`) or a new Dart file (e.g., `pdf_viewer_sample.dart`)? 3. **Platform:** Is the app targeting mobile, desktop, or web? *(Only needed to decide whether the web `index.html` step is required.)* ### Step 2 – Create a New Flutter Project *(skip if project already exists)* Run in the terminal: ```bash flutter create pdf_viewer_app cd pdf_viewer_app ``` ### Step 3 – Add the Syncfusion Dependency *(skip if already present in `pubspec.yaml`)* Add under `dependencies` in `pubspec.yaml`: ```yaml dependencies: flutter: sdk: flutter syncfusion_flutter_pdfviewer: ^33.2.8 ``` Then run: ```bash flutter pub get ``` **Notes:** - Use the latest stable version of the package from [pub.dev](https://pub.dev/packages/syncfusion_flutter_pdfviewer). ### Step 4 – (Web only) Update `web/index.html` If the target platform is web, add the PdfJs script inside the `<body>` tag of `web/index.html`: ```html <script type="module" async> import * as pdfjsLib from 'https://cdnjs.cloudflare.com/ajax/libs/pdf.js/4.10.38/pdf.min.mjs'; pdfjsLib.GlobalWorkerOptions.workerSrc = "https://cdnjs.cloudflare.com/ajax/libs/pdf.js/4.10.38/pdf.worker.min.mjs"; </script> ``` ### Step 5 – Build and Write the Dart Code 1. Start with `references/basic-sample.md` as the base template. 2. Identify the feature(s) requested and merge the relevant snippets from `references/*.md` into the base. 3. Follow these code-generation rules: - Use code **exactly** as shown in the reference — do not alter API usage. - Add only the APIs required by the request; do not include extras. - Always initialise `PdfViewerController` in `initState()` when controller-based APIs are used. 4. Write the final code to the file chosen in Step 1: - **Existing file** (e.g., `main.dart`): use the edit tool to insert or replace code. - **New Dart file** (e.g., `pdf_viewer_sample.dart`): use the create file tool to create it. - **Never** display the code only as a code block — always write it to the file using the appropriate tool. ### Step 6 – Run the App ```bash flutter run ``` --- ### Code References All templates and operation snippets live in `references/*.md`. Each file is a focused snippet or template the agent will combine when generating samples. **Flow:** Always start with `references/basic-sample.md`, then merge matched features into its structure. If no keyword matches, return only the basic sample. | File | Purpose | |---|---| | **basic-sample.md** | Minimal SfPdfViewer with a network/asset URL, Scaffold, and AppBar. | | **magnification.md** | Configure zoom level, max zoom, double-tap zoom, and zoom callbacks using `PdfViewerController` and widget properties. | | **page-navigation.md** | Navigate pages programmatically using `jumpToPage`, `nextPage`, `previousPage`, `firstPage`, `lastPage`, and `jumpTo` offset methods. | | **text-search.md** | Search text, navigate results with `nextInstance`/`previousInstance`, cancel search, and customise highlight colors. | | **text-selection.md** | Enable/disable text selection, customise selection color, handle `onTextSelectionChanged` callback. | | **bookmark-navigation.md** | Open the built-in bookmark view and navigate to bookmarks programmatically using `jumpToBookmark`. | | **scrolling.md** | Programmatic scrolling using `jumpTo` and reading current scroll offset via `scrollOffset`. | | **pdfviewer-properties.md** | Common SfPdfViewer widget properties reference: `canShowScrollHead`, `canShowPaginationDialog`, `interactionMode`, `pageLayoutMode`, `initialZoomLevel`, `onDocumentLoaded`, `onDocumentLoadFailed`, `onPageChanged`, etc. | | **annotation.md** | Add, remove, select, and manage text markup (Highlight, Underline, Strikethrough, Squiggly) and Sticky Note annotations using `PdfViewerController` methods and annotation callbacks. | | **signaturepad.md** | Hide the built-in signature pad using `canShowSignaturePadDialog` and display a custom `SfSignaturePad` dialog via `onFormFieldFocusChange` to capture and assign drawn signatures to `PdfSignatureFormField`. | | **password-protected-pdf.md** | Open encrypted PDF documents using the `password` property and handle load failures with `onDocumentLoadFailed`. | | **link-navigation.md** | Enable/disable document link annotation navigation with `enableDocumentLinkAnnotation` and handle hyperlink taps using `onHyperlinkClicked`. | | **form-filling.md** | Fill, edit, save, export, import, and clear AcroForm fields (text box, checkbox, radio button, combo box, list box, signature) using `PdfViewerController` methods and form field callbacks. | | **localization.md** | Localize SfPdfViewer static UI text to any supported language using `flutter_localizations`, `syncfusion_localizations`, and `MaterialApp` locale configuration. | | **directionality.md** | Enable right-to-left (RTL) rendering by wrapping `SfPdfViewer` with the `Directionality` widget or setting an RTL `locale` in `MaterialApp`. | | **accessibility.md** | Make SfPdfViewer accessible via `Semantics` widget for screen readers, keyboard navigation shortcuts, large font support, and touch target standards. | | **gesture-callback.md** | Handle tap gestures on the PDF viewer using the `onTap` callback and `PdfGestureDetails` (page number, page position, widget position). | ---