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-rw-r--r--servo/components/style/gecko/conversions.rs59
1 files changed, 59 insertions, 0 deletions
diff --git a/servo/components/style/gecko/conversions.rs b/servo/components/style/gecko/conversions.rs
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index 0000000000..ea3700a323
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+++ b/servo/components/style/gecko/conversions.rs
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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+//! This module contains conversion helpers between Servo and Gecko types
+//! Ideally, it would be in geckolib itself, but coherence
+//! forces us to keep the traits and implementations here
+//!
+//! FIXME(emilio): This file should generally just die.
+
+#![allow(unsafe_code)]
+
+use crate::gecko_bindings::structs::{nsresult, Matrix4x4Components};
+use crate::stylesheets::RulesMutateError;
+use crate::values::computed::transform::Matrix3D;
+
+impl From<RulesMutateError> for nsresult {
+ fn from(other: RulesMutateError) -> Self {
+ match other {
+ RulesMutateError::Syntax => nsresult::NS_ERROR_DOM_SYNTAX_ERR,
+ RulesMutateError::IndexSize => nsresult::NS_ERROR_DOM_INDEX_SIZE_ERR,
+ RulesMutateError::HierarchyRequest => nsresult::NS_ERROR_DOM_HIERARCHY_REQUEST_ERR,
+ RulesMutateError::InvalidState => nsresult::NS_ERROR_DOM_INVALID_STATE_ERR,
+ }
+ }
+}
+
+impl<'a> From<&'a Matrix4x4Components> for Matrix3D {
+ fn from(m: &'a Matrix4x4Components) -> Matrix3D {
+ Matrix3D {
+ m11: m[0],
+ m12: m[1],
+ m13: m[2],
+ m14: m[3],
+ m21: m[4],
+ m22: m[5],
+ m23: m[6],
+ m24: m[7],
+ m31: m[8],
+ m32: m[9],
+ m33: m[10],
+ m34: m[11],
+ m41: m[12],
+ m42: m[13],
+ m43: m[14],
+ m44: m[15],
+ }
+ }
+}
+
+impl From<Matrix3D> for Matrix4x4Components {
+ fn from(matrix: Matrix3D) -> Self {
+ [
+ matrix.m11, matrix.m12, matrix.m13, matrix.m14, matrix.m21, matrix.m22, matrix.m23,
+ matrix.m24, matrix.m31, matrix.m32, matrix.m33, matrix.m34, matrix.m41, matrix.m42,
+ matrix.m43, matrix.m44,
+ ]
+ }
+}