Chromium Code Reviews
chromiumcodereview-hr@appspot.gserviceaccount.com (chromiumcodereview-hr) | Please choose your nickname with Settings | Help | Chromium Project | Gerrit Changes | Sign out
(237)

Side by Side Diff: third_party/WebKit/Source/core/input/TouchActionUtil.cpp

Issue 2863693003: Unify TouchAction classes (Closed)
Patch Set: add cstdlib Created 3 years, 7 months ago
Use n/p to move between diff chunks; N/P to move between comments. Draft comments are only viewable by you.
Jump to:
View unified diff | Download patch
OLDNEW
1 // Copyright 2015 The Chromium Authors. All rights reserved. 1 // Copyright 2015 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #include "core/input/TouchActionUtil.h" 5 #include "core/input/TouchActionUtil.h"
6 6
7 #include "core/dom/Node.h" 7 #include "core/dom/Node.h"
8 #include "core/html/HTMLFrameOwnerElement.h" 8 #include "core/html/HTMLFrameOwnerElement.h"
9 #include "core/layout/LayoutBox.h" 9 #include "core/layout/LayoutBox.h"
10 #include "core/layout/LayoutObject.h" 10 #include "core/layout/LayoutObject.h"
(...skipping 32 matching lines...) Expand 10 before | Expand all | Expand 10 after
43 } 43 }
44 44
45 } // namespace 45 } // namespace
46 46
47 TouchAction ComputeEffectiveTouchAction(const Node& node) { 47 TouchAction ComputeEffectiveTouchAction(const Node& node) {
48 // Start by permitting all actions, then walk the elements supporting 48 // Start by permitting all actions, then walk the elements supporting
49 // touch-action from the target node up to root document, exclude any 49 // touch-action from the target node up to root document, exclude any
50 // prohibited actions at or below the element that supports them. 50 // prohibited actions at or below the element that supports them.
51 // I.e. pan-related actions are considered up to the nearest scroller, 51 // I.e. pan-related actions are considered up to the nearest scroller,
52 // and zoom related actions are considered up to the root. 52 // and zoom related actions are considered up to the root.
53 TouchAction effective_touch_action = kTouchActionAuto; 53 TouchAction effective_touch_action = TouchAction::kTouchActionAuto;
54 TouchAction handled_touch_actions = kTouchActionNone; 54 TouchAction handled_touch_actions = TouchAction::kTouchActionNone;
55 for (const Node* cur_node = &node; cur_node; 55 for (const Node* cur_node = &node; cur_node;
56 cur_node = ParentNodeAcrossFrames(cur_node)) { 56 cur_node = ParentNodeAcrossFrames(cur_node)) {
57 if (LayoutObject* layout_object = cur_node->GetLayoutObject()) { 57 if (LayoutObject* layout_object = cur_node->GetLayoutObject()) {
58 if (SupportsTouchAction(*layout_object)) { 58 if (SupportsTouchAction(*layout_object)) {
59 TouchAction action = layout_object->Style()->GetTouchAction(); 59 TouchAction action = layout_object->Style()->GetTouchAction();
60 action |= handled_touch_actions; 60 action |= handled_touch_actions;
61 effective_touch_action &= action; 61 effective_touch_action &= action;
62 if (effective_touch_action == kTouchActionNone) 62 if (effective_touch_action == TouchAction::kTouchActionNone)
63 break; 63 break;
64 } 64 }
65 65
66 // If we've reached an ancestor that supports panning, stop allowing 66 // If we've reached an ancestor that supports panning, stop allowing
67 // panning to be disabled. 67 // panning to be disabled.
68 if ((layout_object->IsBox() && 68 if ((layout_object->IsBox() &&
69 ToLayoutBox(layout_object)->ScrollsOverflow()) || 69 ToLayoutBox(layout_object)->ScrollsOverflow()) ||
70 layout_object->IsLayoutView()) 70 layout_object->IsLayoutView())
71 handled_touch_actions |= kTouchActionPan; 71 handled_touch_actions |= TouchAction::kTouchActionPan;
72 } 72 }
73 } 73 }
74 return effective_touch_action; 74 return effective_touch_action;
75 } 75 }
76 76
77 } // namespace TouchActionUtil 77 } // namespace TouchActionUtil
78 } // namespace blink 78 } // namespace blink
OLDNEW
« no previous file with comments | « third_party/WebKit/Source/core/input/TouchActionUtil.h ('k') | third_party/WebKit/Source/core/input/TouchEventManager.h » ('j') | no next file with comments »

Powered by Google App Engine
This is Rietveld 408576698