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Side by Side Diff: public/platform/WebLayer.h

Issue 138453004: Pinch/Zoom Infrastructure & Plumbing CL (Prequel) (Closed) Base URL: svn://svn.chromium.org/blink/trunk
Patch Set: Initial plumbing for Blink side of PZ Infrastructure. Created 6 years, 11 months ago
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1 /* 1 /*
2 * Copyright (C) 2011 Google Inc. All rights reserved. 2 * Copyright (C) 2011 Google Inc. All rights reserved.
3 * 3 *
4 * Redistribution and use in source and binary forms, with or without 4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions 5 * modification, are permitted provided that the following conditions
6 * are met: 6 * are met:
7 * 7 *
8 * 1. Redistributions of source code must retain the above copyright 8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer. 9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright 10 * 2. Redistributions in binary form must reproduce the above copyright
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163 163
164 // A layer will not respect any clips established by layers between it and 164 // A layer will not respect any clips established by layers between it and
165 // its nearest clipping ancestor. Note, the clip parent must be an ancestor. 165 // its nearest clipping ancestor. Note, the clip parent must be an ancestor.
166 // This is not a requirement of the scroll parent. 166 // This is not a requirement of the scroll parent.
167 virtual void setClipParent(WebLayer*) = 0; 167 virtual void setClipParent(WebLayer*) = 0;
168 168
169 // Scrolling 169 // Scrolling
170 virtual void setScrollPosition(WebPoint) = 0; 170 virtual void setScrollPosition(WebPoint) = 0;
171 virtual WebPoint scrollPosition() const = 0; 171 virtual WebPoint scrollPosition() const = 0;
172 172
173 // TODO(wjmaclean) Remove next line once https://codereview.chromium.org/239 83047 lands.
173 virtual void setMaxScrollPosition(WebSize) = 0; 174 virtual void setMaxScrollPosition(WebSize) = 0;
174 virtual WebSize maxScrollPosition() const = 0; 175 virtual WebSize maxScrollPosition() const = 0;
175 176
177 // TODO(wjmaclean) Remove next line once https://codereview.chromium.org/239 83047 lands.
176 virtual void setScrollable(bool) = 0; 178 virtual void setScrollable(bool) = 0;
179 // To set a WebLayer as scrollable we must specify the corresponding clip la yer.
180 // TODO(wjmaclean) Make this pure virtual once https://codereview.chromium.o rg/23983047 lands.
181 virtual void setScrollClipLayer(WebLayer*) { }
177 virtual bool scrollable() const = 0; 182 virtual bool scrollable() const = 0;
178 183
179 virtual void setUserScrollable(bool horizontal, bool vertical) = 0; 184 virtual void setUserScrollable(bool horizontal, bool vertical) = 0;
180 virtual bool userScrollableHorizontal() const = 0; 185 virtual bool userScrollableHorizontal() const = 0;
181 virtual bool userScrollableVertical() const = 0; 186 virtual bool userScrollableVertical() const = 0;
182 187
183 virtual void setHaveWheelEventHandlers(bool) = 0; 188 virtual void setHaveWheelEventHandlers(bool) = 0;
184 virtual bool haveWheelEventHandlers() const = 0; 189 virtual bool haveWheelEventHandlers() const = 0;
185 190
186 virtual void setShouldScrollOnMainThread(bool) = 0; 191 virtual void setShouldScrollOnMainThread(bool) = 0;
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213 218
214 // True if the layer is not part of a tree attached to a WebLayerTreeView. 219 // True if the layer is not part of a tree attached to a WebLayerTreeView.
215 virtual bool isOrphan() const = 0; 220 virtual bool isOrphan() const = 0;
216 221
217 virtual void setWebLayerClient(WebLayerClient*) = 0; 222 virtual void setWebLayerClient(WebLayerClient*) = 0;
218 }; 223 };
219 224
220 } // namespace blink 225 } // namespace blink
221 226
222 #endif // WebLayer_h 227 #endif // WebLayer_h
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