// Convert dart_xform._value[0...3] ==> RSTransform
RSTransform DartConverter<RSTransform>::FromDart(Dart_Handle dart_xform) {
RSTransform result;
result.is_null = true;
if (Dart_IsNull(dart_xform))
return result;
Dart_Handle value =
Dart_GetField(dart_xform, DOMDartState::Current()->value_handle());
if (Dart_IsNull(value))
return result;
Dart_TypedData_Type type;
float* data = nullptr;
intptr_t num_elements = 0;
Dart_TypedDataAcquireData(
value, &type, reinterpret_cast<void**>(&data), &num_elements);
DCHECK(!LogIfError(value));
ASSERT(type == Dart_TypedData_kFloat32 && num_elements == 4);
SkScalar* dest[] = {
&result.sk_xform.fSCos,
&result.sk_xform.fSSin,
&result.sk_xform.fTx,
&result.sk_xform.fTy
};
for (intptr_t i = 0; i < 4; ++i)
*dest[i] = data[i];
Dart_TypedDataReleaseData(value);
result.is_null = false;
return result;
}
RSTransform DartConverter<RSTransform>::FromArgumentsWithNullCheck(Dart_NativeArguments args,
int index,
Dart_Handle& exception) {
Dart_Handle dart_xform = Dart_GetNativeArgument(args, index);
DCHECK(!LogIfError(dart_xform));
return FromDart(dart_xform);
}
Paint DartConverter<Paint>::FromArguments(Dart_NativeArguments args,
int index,
Dart_Handle& exception) {
Dart_Handle dart_rect = Dart_GetNativeArgument(args, index);
DCHECK(!LogIfError(dart_rect));
return FromDart(dart_rect);
}
// Construct an SkRRect from a Dart RRect object.
// The Dart RRect has a _value field which is a Float32List containing
// [left, top, right, bottom, xRad, yRad]
RRect DartConverter<RRect>::FromDart(Dart_Handle dart_rrect) {
RRect result;
result.is_null = true;
if (Dart_IsNull(dart_rrect))
return result;
Dart_Handle value =
Dart_GetField(dart_rrect, UIDartState::Current()->value_handle());
if (Dart_IsNull(value))
return result;
Dart_TypedData_Type type;
float* data = nullptr;
intptr_t num_elements = 0;
Dart_TypedDataAcquireData(
value, &type, reinterpret_cast<void**>(&data), &num_elements);
DCHECK(!LogIfError(value));
ASSERT(type == Dart_TypedData_kFloat32 && num_elements == 6);
result.sk_rrect.setRectXY(
SkRect::MakeLTRB(data[0], data[1], data[2], data[3]),
data[4], data[5]);
Dart_TypedDataReleaseData(value);
result.is_null = false;
return result;
}
// Convert handle.x,y ==> SkSize.
Offset DartConverter<Offset>::FromDart(Dart_Handle handle) {
DCHECK(!LogIfError(handle));
Dart_Handle dx_value =
Dart_GetField(handle, DOMDartState::Current()->dx_handle());
Dart_Handle dy_value =
Dart_GetField(handle, DOMDartState::Current()->dy_handle());
double dx = 0.0, dy = 0.0;
Dart_Handle err = Dart_DoubleValue(dx_value, &dx);
DCHECK(!LogIfError(err));
err = Dart_DoubleValue(dy_value, &dy);
DCHECK(!LogIfError(err));
Offset result;
result.sk_size.set(dx, dy);
result.is_null = false;
return result;
}
// Convert handle.x,y ==> SkPoint.
Point DartConverter<Point>::FromDart(Dart_Handle handle) {
Point result;
result.is_null = true;
DCHECK(!LogIfError(handle));
Dart_Handle x_value =
Dart_GetField(handle, DOMDartState::Current()->x_handle());
Dart_Handle y_value =
Dart_GetField(handle, DOMDartState::Current()->y_handle());
double x = 0.0, y = 0.0;
Dart_Handle err = Dart_DoubleValue(x_value, &x);
DCHECK(!LogIfError(err));
err = Dart_DoubleValue(y_value, &y);
DCHECK(!LogIfError(err));
result.sk_point.set(x, y);
result.is_null = false;
return result;
}
Dart_Handle DartConverter<TextBox>::ToDart(const TextBox& val) {
if (val.is_null)
return Dart_Null();
DartClassLibrary& class_library = DartState::Current()->class_library();
Dart_Handle type = Dart_HandleFromPersistent(
class_library.GetClass("ui", "TextBox"));
DCHECK(!LogIfError(type));
const int argc = 5;
Dart_Handle argv[argc] = {
blink::ToDart(val.sk_rect.fLeft),
blink::ToDart(val.sk_rect.fTop),
blink::ToDart(val.sk_rect.fRight),
blink::ToDart(val.sk_rect.fBottom),
blink::ToDart(static_cast<int>(val.direction)),
};
return Dart_New(type, blink::ToDart("_"), argc, argv);
}
