fb00e98681
Flutter's Clipboard API only exposes text shapes. Banlu's chat composer needs image bytes from the system clipboard for desktop paste, so add a UxClipboard facade backed by per-platform native plugins: * iOS: prefer raw PNG/JPEG bytes off the pasteboard, fall back to re-encoding `UIPasteboard.image` as PNG. * macOS: prefer NSPasteboard `.png`, fall back to TIFF transcoded through NSBitmapImageRep so screenshots / Preview hand-offs still work. * Android: read primary ClipData's first item URI and stream the bytes through ContentResolver — don't trust the clip description's MIME, copy whatever the resolver returns. Returns null (never throws) when the clipboard has no image — callers treat null as "fall through to text paste".
53 lines
1.9 KiB
Swift
53 lines
1.9 KiB
Swift
import Flutter
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import MobileCoreServices
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import UIKit
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import UniformTypeIdentifiers
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public class ClipboardPlugin: NSObject, NativePlugin {
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private var channel: FlutterMethodChannel?
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public func register(with registrar: FlutterPluginRegistrar) {
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let c = FlutterMethodChannel(name: "ux/clipboard", binaryMessenger: registrar.messenger())
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c.setMethodCallHandler { [weak self] call, result in
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self?.handle(call, result: result)
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}
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channel = c
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}
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private func handle(_ call: FlutterMethodCall, result: @escaping FlutterResult) {
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switch call.method {
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case "readImage": handleReadImage(result: result)
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default: result(FlutterMethodNotImplemented)
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}
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}
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private func handleReadImage(result: @escaping FlutterResult) {
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let pb = UIPasteboard.general
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// Prefer raw PNG / JPEG bytes already on the clipboard so we don't
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// round-trip through UIImage when we don't have to.
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if #available(iOS 14.0, *) {
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if let png = pb.data(forPasteboardType: UTType.png.identifier) {
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return result(FlutterStandardTypedData(bytes: png))
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}
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if let jpg = pb.data(forPasteboardType: UTType.jpeg.identifier) {
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return result(FlutterStandardTypedData(bytes: jpg))
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}
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} else {
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if let png = pb.data(forPasteboardType: kUTTypePNG as String) {
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return result(FlutterStandardTypedData(bytes: png))
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}
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if let jpg = pb.data(forPasteboardType: kUTTypeJPEG as String) {
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return result(FlutterStandardTypedData(bytes: jpg))
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}
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}
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// Fallback: re-encode whatever UIImage resolves to as PNG.
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if let img = pb.image, let png = img.pngData() {
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return result(FlutterStandardTypedData(bytes: png))
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}
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result(nil)
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}
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}
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