// 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 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;
}
gboolean _gdart_marshaller_check_argument_array(GdartBridgeContext *self,
Dart_Handle element,
gpointer arg_type,
const TypeInfoKlass *arg_type_klass,
Dart_Handle *dart_error_out,
GError **error)
{
gint fixed_length = 0;
gboolean is_zero_terminated;
if (!arg_type_klass->get_array_fixed_size(arg_type,
self,
&fixed_length,
dart_error_out,
error))
return FALSE;
if (!arg_type_klass->is_zero_terminated(arg_type,
self,
&is_zero_terminated,
dart_error_out,
error))
return FALSE;
if (fixed_length == -1 && !is_zero_terminated) {
*dart_error_out = gdart_bridge_context_create_error_handle(self,
"%s: the array did not have a fixed size or a null termination so I can't handle it", G_STRFUNC);
g_set_error(error, GDART_ERROR, 1,
"%s: the array did not have a fixed size or a null termination so I can't handle it", G_STRFUNC);
goto error;
}
if (!Dart_IsList(element) && !Dart_IsNull(element)) {
*dart_error_out = gdart_bridge_context_create_error_handle(self,
"%s: expected string or null", G_STRFUNC);
g_set_error(error, GDART_ERROR, 1,
"%s: expected string or null", G_STRFUNC);
goto error;
}
if (Dart_IsNull(element) && fixed_length == -1) return TRUE;
return _gdart_marshaller_check_argument_in_array_parameters(self,
element,
arg_type,
arg_type_klass,
fixed_length,
dart_error_out,
error);
error:
return FALSE;
}
/* Native methods. */
void IfNull(Dart_NativeArguments arguments) {
Dart_Handle object = Dart_GetNativeArgument(arguments, 0);
if (Dart_IsNull(object)) {
Dart_SetReturnValue(arguments, Dart_GetNativeArgument(arguments, 1));
} else {
Dart_SetReturnValue(arguments, object);
}
}
gboolean _gdart_marshaller_check_argument_string(GdartBridgeContext *self,
Dart_Handle element,
gpointer arg_type,
const TypeInfoKlass *arg_type_klass,
Dart_Handle *dart_error_out,
GError **error)
{
if (!Dart_IsString(element) && !Dart_IsNull(element)) {
*dart_error_out = gdart_bridge_context_create_error_handle(self,
"%s: expected string or null", G_STRFUNC);
g_set_error(error, GDART_ERROR, 1,
"%s: expected string or null", G_STRFUNC);
goto error;
}
return TRUE;
error:
return FALSE;
}
gboolean _gdart_marshaller_check_argument_in_array(GdartBridgeContext *self,
Dart_Handle dart_args,
gint *dartarg_i,
gpointer arg_type,
const TypeInfoKlass *arg_type_klass,
gint garg_i,
Dart_Handle *dart_error_out,
GError **error)
{
Dart_Handle element;
gint arg_to_suppress, fixed_length = 0;
gboolean is_zero_terminated;
if (!arg_type_klass->get_array_length(arg_type,
self,
&arg_to_suppress,
dart_error_out,
error))
return FALSE;
if (!arg_type_klass->get_array_fixed_size(arg_type,
self,
&fixed_length,
dart_error_out,
error))
return FALSE;
if (!arg_type_klass->is_zero_terminated(arg_type,
self,
&is_zero_terminated,
dart_error_out,
error))
return FALSE;
if (arg_to_suppress == -1 && fixed_length == -1 &&
!is_zero_terminated) {
*dart_error_out = gdart_bridge_context_create_error_handle(self,
"%s: the array did not have a length, a fixed size or a null termination so I can't handle it", G_STRFUNC);
g_set_error(error, GDART_ERROR, 1,
"%s: the array did not have a length, a fixed size or a null termination so I can't handle it", G_STRFUNC);
return FALSE;
}
element = Dart_ListGetAt(dart_args, (*dartarg_i)++);
if (Dart_IsError(element)) {
*dart_error_out = element;
g_set_error(error, GDART_ERROR, 1, "Error from Dart operation.");
return FALSE;
}
if (!Dart_IsList(element) && !Dart_IsNull(element)) {
*dart_error_out = gdart_bridge_context_create_error_handle(self,
"%s: expected string or null", G_STRFUNC);
g_set_error(error, GDART_ERROR, 1,
"%s: expected string or null", G_STRFUNC);
return FALSE;
}
if (Dart_IsNull(element) && fixed_length == -1) return TRUE;
return _gdart_marshaller_check_argument_in_array_parameters(self,
element,
arg_type,
arg_type_klass,
fixed_length,
dart_error_out,
error);
}
gboolean _gdart_marshaller_check_argument_object(
GdartBridgeContext *self,
Dart_Handle element,
gpointer type,
const ObjectInfoKlass *type_klass,
Dart_Handle *dart_error_out,
GError **error)
{
Dart_Handle base_object_class, temp_result, inner_container, name_handle;
bool is_proper_type;
RawPointerContainer* raw_pointer;
GdartBridgeContextWrappedObject* object_info;
GObject* object;
GType gtype;
GIInfoType object_info_type;
base_object_class = gdart_bridge_context_get_base_object_class(self, dart_error_out, error);
if (base_object_class == NULL) {
return false;
}
if (Dart_IsNull(element)) {
return TRUE;
}
temp_result = Dart_ObjectIsType(element, base_object_class, &is_proper_type);
if (Dart_IsError(temp_result)) {
*dart_error_out = temp_result;
g_set_error(error, GDART_ERROR, 1, "Error from Dart operation.");
goto error;
}
if (!is_proper_type) {
*dart_error_out = gdart_bridge_context_create_error_handle(self,
"%s: received an unexpected base info type", G_STRFUNC);
g_set_error(error, GDART_ERROR, 1,
"%s: received an unexpected base info type", G_STRFUNC);
goto error;
}
name_handle = Dart_NewStringFromCString("_internal");
if (Dart_IsError(name_handle)) {
*dart_error_out = name_handle;
g_set_error(error, GDART_ERROR, 1, "Error from Dart operation.");
return FALSE;
}
inner_container = Dart_GetField(element, name_handle);
if (Dart_IsError(inner_container)) {
*dart_error_out = inner_container;
g_set_error(error, GDART_ERROR, 1, "Error from Dart operation.");
return FALSE;
}
temp_result = Dart_GetNativeInstanceField(inner_container, 0, (intptr_t*) &raw_pointer);
if (Dart_IsError(temp_result)) {
*dart_error_out = temp_result;
g_set_error(error, GDART_ERROR, 1, "Error from Dart operation.");
return FALSE;
}
object_info = (GdartBridgeContextWrappedObject*) raw_pointer->raw_pointer;
if (!object_info->object_info_klass.get_type(object_info->object_info,
self,
&object_info_type,
dart_error_out,
error))
return FALSE;
if (object_info_type != GI_INFO_TYPE_OBJECT) {
*dart_error_out = gdart_bridge_context_create_error_handle(self,
"%s: expected an object but got a struct", G_STRFUNC);
g_set_error(error, GDART_ERROR, 1,
"%s: expected an object but got a struct", G_STRFUNC);
goto error;
}
object = (GObject*) object_info->object;
if (!type_klass->get_gtype(type,
self,
>ype,
dart_error_out,
error))
return FALSE;
if (!g_type_is_a(G_OBJECT_TYPE(object), gtype)) {
*dart_error_out = gdart_bridge_context_create_error_handle(self,
"%s: expected an object of one type but got another", G_STRFUNC);
g_set_error(error, GDART_ERROR, 1,
"%s: expected an object of one type but got another", G_STRFUNC);
goto error;
}
return TRUE;
error:
return FALSE;
}
gboolean _gdart_marshaller_check_argument_struct_from_gtype(
GdartBridgeContext *self,
Dart_Handle element,
GType type,
Dart_Handle *dart_error_out,
GError **error)
{
Dart_Handle base_object_class, temp_result, inner_container, name_handle;
bool is_proper_type;
RawPointerContainer* raw_pointer;
GdartBridgeContextWrappedObject* object_info;
base_object_class = gdart_bridge_context_get_base_object_class(self, dart_error_out, error);
if (base_object_class == NULL) {
return false;
}
if (Dart_IsNull(element)) {
return TRUE;
}
temp_result = Dart_ObjectIsType(element, base_object_class, &is_proper_type);
if (Dart_IsError(temp_result)) {
*dart_error_out = temp_result;
g_set_error(error, GDART_ERROR, 1, "Error from Dart operation.");
goto error;
}
if (!is_proper_type) {
*dart_error_out = gdart_bridge_context_create_error_handle(self,
"%s: received an unexpected base info type", G_STRFUNC);
g_set_error(error, GDART_ERROR, 1,
"%s: received an unexpected base info type", G_STRFUNC);
goto error;
}
name_handle = Dart_NewStringFromCString("_internal");
if (Dart_IsError(name_handle)) {
*dart_error_out = name_handle;
g_set_error(error, GDART_ERROR, 1, "Error from Dart operation.");
return FALSE;
}
inner_container = Dart_GetField(element, name_handle);
if (Dart_IsError(inner_container)) {
*dart_error_out = inner_container;
g_set_error(error, GDART_ERROR, 1, "Error from Dart operation.");
return FALSE;
}
temp_result = Dart_GetNativeInstanceField(inner_container, 0, (intptr_t*) &raw_pointer);
if (Dart_IsError(temp_result)) {
*dart_error_out = temp_result;
g_set_error(error, GDART_ERROR, 1, "Error from Dart operation.");
return FALSE;
}
object_info = (GdartBridgeContextWrappedObject*) raw_pointer->raw_pointer;
/* TODO: This is super-unreliable because there is no way to trust the gtype
* given.
*
if (object_info->type != type) {
*dart_error_out = gdart_bridge_context_create_error_handle(self,
"%s: got an argument of the wrong type. This might be due to a problem in the GIR file", G_STRFUNC);
g_set_error(error, GDART_ERROR, 1,
"%s: got an argument of the wrong type. This might be due to a problem in the GIR file", G_STRFUNC);
goto error;
}
*/
return TRUE;
error:
return FALSE;
}
Paint DartConverter<Paint>::FromDart(Dart_Handle dart_paint) {
Paint result;
result.is_null = true;
if (Dart_IsNull(dart_paint))
return result;
Dart_Handle value_handle = UIDartState::Current()->value_handle();
Dart_Handle data = Dart_GetField(dart_paint, value_handle);
if (Dart_IsInteger(data)) {
// This is a simple Paint object that just contains a color with
// anti-aliasing enabled. The data is the color, represented as an
// int in the same format as SkColor.
result.sk_paint.setColor(DartConverter<SkColor>::FromDart(data));
result.sk_paint.setAntiAlias(true);
result.is_null = false;
return result;
}
DCHECK(Dart_IsList(data));
intptr_t length;
Dart_ListLength(data, &length);
CHECK_EQ(length, kNumberOfPaintFields);
Dart_Handle values[kNumberOfPaintFields];
Dart_Handle range_result = Dart_ListGetRange(data, 0, kNumberOfPaintFields,
values);
if (Dart_IsError(range_result)) {
return result;
}
SkPaint& paint = result.sk_paint;
if (!Dart_IsNull(values[kStyle]))
paint.setStyle(static_cast<SkPaint::Style>(DartConverter<int>::FromDart(values[kStyle])));
if (!Dart_IsNull(values[kStrokeWidth]))
paint.setStrokeWidth(DartConverter<SkScalar>::FromDart(values[kStrokeWidth]));
if (!Dart_IsNull(values[kStrokeCap]))
paint.setStrokeCap(static_cast<SkPaint::Cap>(DartConverter<int>::FromDart(values[kStrokeCap])));
if (!Dart_IsNull(values[kIsAntiAlias]))
paint.setAntiAlias(DartConverter<bool>::FromDart(values[kIsAntiAlias]));
if (!Dart_IsNull(values[kColor]))
paint.setColor(static_cast<SkColor>(DartConverter<int>::FromDart(values[kColor])));
if (!Dart_IsNull(values[kTransferMode]))
paint.setXfermodeMode(static_cast<SkXfermode::Mode>(DartConverter<int>::FromDart(values[kTransferMode])));
if (!Dart_IsNull(values[kColorFilter]))
paint.setColorFilter(DartConverter<ColorFilter*>::FromDart(values[kColorFilter])->filter());
if (!Dart_IsNull(values[kMaskFilter]))
paint.setMaskFilter(DartConverter<MaskFilter*>::FromDart(values[kMaskFilter])->filter());
if (!Dart_IsNull(values[kFilterQuality]))
paint.setFilterQuality(static_cast<SkFilterQuality>(DartConverter<int>::FromDart(values[kFilterQuality])));
if (!Dart_IsNull(values[kShader]))
paint.setShader(DartConverter<Shader*>::FromDart(values[kShader])->shader());
result.is_null = false;
return result;
}
