| /* |
| * Copyright (C) 2019 Apple 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 INC. 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 INC. 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. |
| */ |
| |
| #pragma once |
| |
| #include "ScrollTypes.h" |
| |
| namespace WebCore { |
| |
| typedef unsigned SynchronousScrollingReasons; |
| |
| enum class ScrollingNodeType : uint8_t { |
| MainFrame, |
| Subframe, |
| FrameHosting, |
| Overflow, |
| Fixed, |
| Sticky, |
| Positioned, |
| }; |
| |
| enum ScrollingStateTreeAsTextBehaviorFlags { |
| ScrollingStateTreeAsTextBehaviorNormal = 0, |
| ScrollingStateTreeAsTextBehaviorIncludeLayerIDs = 1 << 0, |
| ScrollingStateTreeAsTextBehaviorIncludeNodeIDs = 1 << 1, |
| ScrollingStateTreeAsTextBehaviorIncludeLayerPositions = 1 << 2, |
| ScrollingStateTreeAsTextBehaviorDebug = ScrollingStateTreeAsTextBehaviorIncludeLayerIDs | ScrollingStateTreeAsTextBehaviorIncludeNodeIDs | ScrollingStateTreeAsTextBehaviorIncludeLayerPositions |
| }; |
| typedef unsigned ScrollingStateTreeAsTextBehavior; |
| |
| enum class ScrollingLayerPositionAction { |
| Set, |
| SetApproximate, |
| Sync |
| }; |
| |
| struct ScrollableAreaParameters { |
| ScrollElasticity horizontalScrollElasticity { ScrollElasticityNone }; |
| ScrollElasticity verticalScrollElasticity { ScrollElasticityNone }; |
| |
| ScrollbarMode horizontalScrollbarMode { ScrollbarAuto }; |
| ScrollbarMode verticalScrollbarMode { ScrollbarAuto }; |
| |
| bool hasEnabledHorizontalScrollbar { false }; |
| bool hasEnabledVerticalScrollbar { false }; |
| |
| bool horizontalScrollbarHiddenByStyle { false }; |
| bool verticalScrollbarHiddenByStyle { false }; |
| |
| bool useDarkAppearanceForScrollbars { false }; |
| |
| bool operator==(const ScrollableAreaParameters& other) const |
| { |
| return horizontalScrollElasticity == other.horizontalScrollElasticity |
| && verticalScrollElasticity == other.verticalScrollElasticity |
| && horizontalScrollbarMode == other.horizontalScrollbarMode |
| && verticalScrollbarMode == other.verticalScrollbarMode |
| && hasEnabledHorizontalScrollbar == other.hasEnabledHorizontalScrollbar |
| && hasEnabledVerticalScrollbar == other.hasEnabledVerticalScrollbar |
| && useDarkAppearanceForScrollbars == other.useDarkAppearanceForScrollbars; |
| } |
| }; |
| |
| enum class ScrollingEventResult { |
| DidNotHandleEvent, |
| DidHandleEvent, |
| SendToMainThread |
| }; |
| |
| enum class ViewportRectStability { |
| Stable, |
| Unstable, |
| ChangingObscuredInsetsInteractively // This implies Unstable. |
| }; |
| |
| } |