1 files changed, 141 insertions, 0 deletions
diff --git a/layout/style/nsStyleStructInlines.h b/layout/style/nsStyleStructInlines.h
new file mode 100644
index 0000000000..885be379ee
--- /dev/null
+++ b/layout/style/nsStyleStructInlines.h
@@ -0,0 +1,141 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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/. */
+
+/*
+ * Inline methods that belong in nsStyleStruct.h, except that they
+ * require more headers.
+ */
+
+#ifndef nsStyleStructInlines_h_
+#define nsStyleStructInlines_h_
+
+#include "nsIFrame.h"
+#include "nsStyleStruct.h"
+#include "nsIContent.h"   // for GetParent()
+#include "nsTextFrame.h"  // for nsTextFrame::ShouldSuppressLineBreak
+
+bool nsStyleText::NewlineIsSignificant(const nsTextFrame* aContextFrame) const {
+  NS_ASSERTION(aContextFrame->StyleText() == this, "unexpected aContextFrame");
+  return NewlineIsSignificantStyle() &&
+         !aContextFrame->ShouldSuppressLineBreak() &&
+         !aContextFrame->Style()->IsTextCombined();
+}
+
+bool nsStyleText::WhiteSpaceCanWrap(const nsIFrame* aContextFrame) const {
+  NS_ASSERTION(aContextFrame->StyleText() == this, "unexpected aContextFrame");
+  return WhiteSpaceCanWrapStyle() && !aContextFrame->IsInSVGTextSubtree() &&
+         !aContextFrame->Style()->IsTextCombined();
+}
+
+bool nsStyleText::WordCanWrap(const nsIFrame* aContextFrame) const {
+  NS_ASSERTION(aContextFrame->StyleText() == this, "unexpected aContextFrame");
+  return WordCanWrapStyle() && !aContextFrame->IsInSVGTextSubtree();
+}
+
+bool nsStyleDisplay::IsBlockOutside(const nsIFrame* aContextFrame) const {
+  NS_ASSERTION(aContextFrame->StyleDisplay() == this,
+               "unexpected aContextFrame");
+  if (aContextFrame->IsInSVGTextSubtree()) {
+    return aContextFrame->IsBlockFrame();
+  }
+  return IsBlockOutsideStyle();
+}
+
+bool nsStyleDisplay::IsInlineOutside(const nsIFrame* aContextFrame) const {
+  NS_ASSERTION(aContextFrame->StyleDisplay() == this,
+               "unexpected aContextFrame");
+  if (aContextFrame->IsInSVGTextSubtree()) {
+    return !aContextFrame->IsBlockFrame();
+  }
+  return IsInlineOutsideStyle();
+}
+
+mozilla::StyleDisplay nsStyleDisplay::GetDisplay(
+    const nsIFrame* aContextFrame) const {
+  NS_ASSERTION(aContextFrame->StyleDisplay() == this,
+               "unexpected aContextFrame");
+  if (aContextFrame->IsInSVGTextSubtree() &&
+      mDisplay != mozilla::StyleDisplay::None) {
+    return aContextFrame->IsBlockFrame() ? mozilla::StyleDisplay::Block
+                                         : mozilla::StyleDisplay::Inline;
+  }
+  return mDisplay;
+}
+
+bool nsStyleDisplay::IsFloating(const nsIFrame* aContextFrame) const {
+  NS_ASSERTION(aContextFrame->StyleDisplay() == this,
+               "unexpected aContextFrame");
+  return IsFloatingStyle() && !aContextFrame->IsInSVGTextSubtree();
+}
+
+// If you change this function, also change the corresponding block in
+// nsCSSFrameConstructor::ConstructFrameFromItemInternal that references
+// this function in comments.
+bool nsStyleDisplay::HasTransform(const nsIFrame* aContextFrame) const {
+  NS_ASSERTION(aContextFrame->StyleDisplay() == this,
+               "unexpected aContextFrame");
+  return HasTransformStyle() && aContextFrame->SupportsCSSTransforms();
+}
+
+bool nsStyleDisplay::HasPerspective(const nsIFrame* aContextFrame) const {
+  MOZ_ASSERT(aContextFrame->StyleDisplay() == this, "unexpected aContextFrame");
+  return HasPerspectiveStyle() && aContextFrame->SupportsCSSTransforms();
+}
+
+bool nsStyleDisplay::
+    IsFixedPosContainingBlockForContainLayoutAndPaintSupportingFrames() const {
+  return IsContainPaint() || IsContainLayout() ||
+         mWillChange.bits & mozilla::StyleWillChangeBits::CONTAIN;
+}
+
+bool nsStyleDisplay::IsFixedPosContainingBlockForTransformSupportingFrames()
+    const {
+  // NOTE: Any CSS properties that influence the output of this function
+  // should also look at mWillChange as necessary.
+  return HasTransformStyle() || HasPerspectiveStyle() ||
+         mWillChange.bits & mozilla::StyleWillChangeBits::PERSPECTIVE;
+}
+
+bool nsStyleDisplay::IsRelativelyOrStickyPositioned(
+    const nsIFrame* aContextFrame) const {
+  NS_ASSERTION(aContextFrame->StyleDisplay() == this,
+               "unexpected aContextFrame");
+  return IsRelativelyOrStickyPositionedStyle() &&
+         !aContextFrame->IsInSVGTextSubtree();
+}
+
+bool nsStyleDisplay::IsRelativelyPositioned(
+    const nsIFrame* aContextFrame) const {
+  NS_ASSERTION(aContextFrame->StyleDisplay() == this,
+               "unexpected aContextFrame");
+  return IsRelativelyPositionedStyle() && !aContextFrame->IsInSVGTextSubtree();
+}
+
+bool nsStyleDisplay::IsStickyPositioned(const nsIFrame* aContextFrame) const {
+  NS_ASSERTION(aContextFrame->StyleDisplay() == this,
+               "unexpected aContextFrame");
+  return IsStickyPositionedStyle() && !aContextFrame->IsInSVGTextSubtree();
+}
+
+bool nsStyleDisplay::IsAbsolutelyPositioned(
+    const nsIFrame* aContextFrame) const {
+  NS_ASSERTION(aContextFrame->StyleDisplay() == this,
+               "unexpected aContextFrame");
+  return IsAbsolutelyPositionedStyle() && !aContextFrame->IsInSVGTextSubtree();
+}
+
+bool nsStyleBackground::HasLocalBackground() const {
+  NS_FOR_VISIBLE_IMAGE_LAYERS_BACK_TO_FRONT(i, mImage) {
+    const nsStyleImageLayers::Layer& layer = mImage.mLayers[i];
+    if (!layer.mImage.IsNone() &&
+        layer.mAttachment == mozilla::StyleImageLayerAttachment::Local) {
+      return true;
+    }
+  }
+  return false;
+}
+
+#endif /* !defined(nsStyleStructInlines_h_) */