Index: third_party/WebKit/public/platform/WebLayerStickyPositionConstraint.h |
diff --git a/third_party/WebKit/public/platform/WebLayerStickyPositionConstraint.h b/third_party/WebKit/public/platform/WebLayerStickyPositionConstraint.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..880260b8f8d593bf7317908451322a46d46ffcc5 |
--- /dev/null |
+++ b/third_party/WebKit/public/platform/WebLayerStickyPositionConstraint.h |
@@ -0,0 +1,75 @@ |
+/* |
+ * Copyright (C) 2013 Google Inc. All rights reserved. |
+ * |
+ * Redistribution and use in source and binary forms, with or without |
+ * modification, are permitted provided that the following conditions |
+ * are met: |
+ * |
+ * 1. Redistributions of source code must retain the above copyright |
+ * notice, this list of conditions and the following disclaimer. |
+ * 2. Redistributions in binary form must reproduce the above copyright |
+ * notice, this list of conditions and the following disclaimer in the |
+ * documentation and/or other materials provided with the distribution. |
+ * |
+ * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY |
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
+ * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY |
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
+ */ |
+ |
+#ifndef WebLayerStickyPositionConstraint_h |
+#define WebLayerStickyPositionConstraint_h |
+ |
+namespace blink { |
+ |
+// TODO(flackr): Combine with WebLayerPositionConstraint. |
+struct WebLayerStickyPositionConstraint { |
+ // True if the layer is sticky. |
+ bool isSticky : 1; |
+ |
+ // For each edge, true if the layer should stick to that edge of its |
+ // ancestor scroller (or the viewport). |
+ bool isAnchoredLeft : 1; |
+ bool isAnchoredRight : 1; |
+ bool isAnchoredTop : 1; |
+ bool isAnchoredBottom : 1; |
+ |
+ // For each edge, when the anchored bit above is set this gives the distance |
+ // to keep the element from that edge of the ancestor scroller or viewport. |
+ float leftOffset; |
+ float rightOffset; |
+ float topOffset; |
+ float bottomOffset; |
+ |
+ // The layout rectangle of the sticky element before it has been shifted |
+ // to stick. |
+ WebRect scrollContainerRelativeStickyBoxRect; |
+ |
+ // The layout rectangle of the containing block edges which this sticky |
+ // element should not be shifted beyond. |
+ WebRect scrollContainerRelativeContainingBlockRect; |
+ |
+ WebLayerStickyPositionConstraint() |
+ : isSticky(false) |
+ , isAnchoredLeft(false) |
+ , isAnchoredRight(false) |
+ , isAnchoredTop(false) |
+ , isAnchoredBottom(false) |
+ , leftOffset(0.f) |
+ , rightOffset(0.f) |
+ , topOffset(0.f) |
+ , bottomOffset(0.f) |
+ { |
+ } |
+}; |
+ |
+} // namespace blink |
+ |
+#endif // WebLayerStickyPositionConstraint_h |
+ |