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upgrade null-safe

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This commit is contained in:
csf
2022-02-17 15:22:14 +08:00
parent f5f496f1cf
commit b4ed72435c
9 changed files with 298 additions and 281 deletions
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30
lib/native_model.dart
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@@ -11,8 +11,8 @@ import 'common.dart';
class RgbaFrame extends Struct {
@Uint32()
int len;
Pointer<Uint8> data;
external int len;
external Pointer<Uint8> data;
}
typedef F2 = Pointer<Utf8> Function(Pointer<Utf8>, Pointer<Utf8>);
@@ -21,24 +21,25 @@ typedef F4 = void Function(Pointer<RgbaFrame>);
typedef F5 = Pointer<RgbaFrame> Function();
class PlatformFFI {
static Pointer<RgbaFrame> _lastRgbaFrame;
static Pointer<RgbaFrame>? _lastRgbaFrame;
static String _dir = '';
static String _homeDir = '';
static F2 _getByName;
static F3 _setByName;
static F4 _freeRgba;
static F5 _getRgba;
static F2? _getByName;
static F3? _setByName;
static F4? _freeRgba;
static F5? _getRgba;
static void clearRgbaFrame() {
if (_lastRgbaFrame != null && _lastRgbaFrame != nullptr)
_freeRgba(_lastRgbaFrame);
if (_lastRgbaFrame != null &&
_lastRgbaFrame != nullptr &&
_freeRgba != null) _freeRgba!(_lastRgbaFrame!);
}
static Uint8List getRgba() {
static Uint8List? getRgba() {
if (_getRgba == null) return null;
_lastRgbaFrame = _getRgba();
_lastRgbaFrame = _getRgba!();
if (_lastRgbaFrame == null || _lastRgbaFrame == nullptr) return null;
final ref = _lastRgbaFrame.ref;
final ref = _lastRgbaFrame!.ref;
return Uint8List.sublistView(ref.data.asTypedList(ref.len));
}
@@ -51,7 +52,7 @@ class PlatformFFI {
if (_getByName == null) return '';
var a = name.toNativeUtf8();
var b = arg.toNativeUtf8();
var p = _getByName(a, b);
var p = _getByName!(a, b);
assert(p != nullptr && p != null);
var res = p.toDartString();
calloc.free(p);
@@ -64,7 +65,7 @@ class PlatformFFI {
if (_setByName == null) return;
var a = name.toNativeUtf8();
var b = value.toNativeUtf8();
_setByName(a, b);
_setByName!(a, b);
calloc.free(a);
calloc.free(b);
}
@@ -110,6 +111,7 @@ class PlatformFFI {
static void startDesktopWebListener(
Function(Map<String, dynamic>) handleMouse) {}
static void stopDesktopWebListener() {}
static void setMethodCallHandler(FMethod callback) {