1 files changed, 98 insertions, 0 deletions
diff --git a/gfx/wr/webrender/src/prim_store/backdrop.rs b/gfx/wr/webrender/src/prim_store/backdrop.rs
new file mode 100644
index 0000000000..c45bf78eef
--- /dev/null
+++ b/gfx/wr/webrender/src/prim_store/backdrop.rs
@@ -0,0 +1,98 @@
+/* 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 http://mozilla.org/MPL/2.0/. */
+
+use api::units::*;
+use crate::spatial_tree::SpatialNodeIndex;
+use crate::intern::{Internable, InternDebug, Handle as InternHandle};
+use crate::internal_types::LayoutPrimitiveInfo;
+use crate::prim_store::{
+    InternablePrimitive, PictureIndex, PrimitiveInstanceKind, PrimKey, PrimTemplate,
+    PrimTemplateCommonData, PrimitiveStore, RectangleKey,
+};
+
+#[cfg_attr(feature = "capture", derive(Serialize))]
+#[cfg_attr(feature = "replay", derive(Deserialize))]
+#[derive(Debug, Clone, Eq, PartialEq, MallocSizeOf, Hash)]
+pub struct Backdrop {
+    pub pic_index: PictureIndex,
+    pub spatial_node_index: SpatialNodeIndex,
+    pub border_rect: RectangleKey,
+}
+
+impl From<Backdrop> for BackdropData {
+    fn from(backdrop: Backdrop) -> Self {
+        BackdropData {
+            pic_index: backdrop.pic_index,
+            spatial_node_index: backdrop.spatial_node_index,
+            border_rect: backdrop.border_rect.into(),
+        }
+    }
+}
+
+pub type BackdropKey = PrimKey<Backdrop>;
+
+impl BackdropKey {
+    pub fn new(
+        info: &LayoutPrimitiveInfo,
+        backdrop: Backdrop,
+    ) -> Self {
+        BackdropKey {
+            common: info.into(),
+            kind: backdrop,
+        }
+    }
+}
+
+impl InternDebug for BackdropKey {}
+
+#[cfg_attr(feature = "capture", derive(Serialize))]
+#[cfg_attr(feature = "replay", derive(Deserialize))]
+#[derive(Debug, MallocSizeOf)]
+pub struct BackdropData {
+    pub pic_index: PictureIndex,
+    pub spatial_node_index: SpatialNodeIndex,
+    pub border_rect: LayoutRect,
+}
+
+pub type BackdropTemplate = PrimTemplate<BackdropData>;
+
+impl From<BackdropKey> for BackdropTemplate {
+    fn from(backdrop: BackdropKey) -> Self {
+        let common = PrimTemplateCommonData::with_key_common(backdrop.common);
+
+        BackdropTemplate {
+            common,
+            kind: backdrop.kind.into(),
+        }
+    }
+}
+
+pub type BackdropDataHandle = InternHandle<Backdrop>;
+
+impl Internable for Backdrop {
+    type Key = BackdropKey;
+    type StoreData = BackdropTemplate;
+    type InternData = ();
+    const PROFILE_COUNTER: usize = crate::profiler::INTERNED_BACKDROPS;
+}
+
+impl InternablePrimitive for Backdrop {
+    fn into_key(
+        self,
+        info: &LayoutPrimitiveInfo,
+    ) -> BackdropKey {
+        BackdropKey::new(info, self)
+    }
+
+    fn make_instance_kind(
+        _key: BackdropKey,
+        data_handle: BackdropDataHandle,
+        _prim_store: &mut PrimitiveStore,
+        _reference_frame_relative_offset: LayoutVector2D,
+    ) -> PrimitiveInstanceKind {
+        PrimitiveInstanceKind::Backdrop {
+            data_handle,
+        }
+    }
+}