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1 /* | 1 /* |
2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org) | 2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
3 * Copyright (C) 2006 Apple Computer, Inc. | 3 * Copyright (C) 2006 Apple Computer, Inc. |
4 * | 4 * |
5 * This library is free software; you can redistribute it and/or | 5 * This library is free software; you can redistribute it and/or |
6 * modify it under the terms of the GNU Library General Public | 6 * modify it under the terms of the GNU Library General Public |
7 * License as published by the Free Software Foundation; either | 7 * License as published by the Free Software Foundation; either |
8 * version 2 of the License, or (at your option) any later version. | 8 * version 2 of the License, or (at your option) any later version. |
9 * | 9 * |
10 * This library is distributed in the hope that it will be useful, | 10 * This library is distributed in the hope that it will be useful, |
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57 // | 57 // |
58 // Because there is one LayoutView per rooted layout tree (or Frame), this class | 58 // Because there is one LayoutView per rooted layout tree (or Frame), this class |
59 // is used to add members shared by this tree (e.g. m_layoutState or | 59 // is used to add members shared by this tree (e.g. m_layoutState or |
60 // m_layoutQuoteHead). | 60 // m_layoutQuoteHead). |
61 class CORE_EXPORT LayoutView final : public LayoutBlockFlow { | 61 class CORE_EXPORT LayoutView final : public LayoutBlockFlow { |
62 public: | 62 public: |
63 explicit LayoutView(Document*); | 63 explicit LayoutView(Document*); |
64 ~LayoutView() override; | 64 ~LayoutView() override; |
65 void willBeDestroyed() override; | 65 void willBeDestroyed() override; |
66 | 66 |
67 // hitTest() will update layout, style and compositing first while hitTestNoLi
fecycleUpdate() does not. | 67 // hitTest() will update layout, style and compositing first while |
| 68 // hitTestNoLifecycleUpdate() does not. |
68 bool hitTest(HitTestResult&); | 69 bool hitTest(HitTestResult&); |
69 bool hitTestNoLifecycleUpdate(HitTestResult&); | 70 bool hitTestNoLifecycleUpdate(HitTestResult&); |
70 | 71 |
71 // Returns the total count of calls to HitTest, for testing. | 72 // Returns the total count of calls to HitTest, for testing. |
72 unsigned hitTestCount() const { return m_hitTestCount; } | 73 unsigned hitTestCount() const { return m_hitTestCount; } |
73 unsigned hitTestCacheHits() const { return m_hitTestCacheHits; } | 74 unsigned hitTestCacheHits() const { return m_hitTestCacheHits; } |
74 | 75 |
75 void clearHitTestCache(); | 76 void clearHitTestCache(); |
76 | 77 |
77 const char* name() const override { return "LayoutView"; } | 78 const char* name() const override { return "LayoutView"; } |
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178 // Notification that this view moved into or out of a native window. | 179 // Notification that this view moved into or out of a native window. |
179 void setIsInWindow(bool); | 180 void setIsInWindow(bool); |
180 | 181 |
181 PaintLayerCompositor* compositor(); | 182 PaintLayerCompositor* compositor(); |
182 bool usesCompositing() const; | 183 bool usesCompositing() const; |
183 | 184 |
184 LayoutRect backgroundRect(LayoutBox* backgroundLayoutObject) const; | 185 LayoutRect backgroundRect(LayoutBox* backgroundLayoutObject) const; |
185 | 186 |
186 IntRect documentRect() const; | 187 IntRect documentRect() const; |
187 | 188 |
188 // LayoutObject that paints the root background has background-images which al
l have background-attachment: fixed. | 189 // LayoutObject that paints the root background has background-images which |
| 190 // all have background-attachment: fixed. |
189 bool rootBackgroundIsEntirelyFixed() const; | 191 bool rootBackgroundIsEntirelyFixed() const; |
190 | 192 |
191 IntervalArena* intervalArena(); | 193 IntervalArena* intervalArena(); |
192 | 194 |
193 void setLayoutQuoteHead(LayoutQuote* head) { m_layoutQuoteHead = head; } | 195 void setLayoutQuoteHead(LayoutQuote* head) { m_layoutQuoteHead = head; } |
194 LayoutQuote* layoutQuoteHead() const { return m_layoutQuoteHead; } | 196 LayoutQuote* layoutQuoteHead() const { return m_layoutQuoteHead; } |
195 | 197 |
196 // FIXME: This is a work around because the current implementation of counters | 198 // FIXME: This is a work around because the current implementation of counters |
197 // requires walking the entire tree repeatedly and most pages don't actually u
se either | 199 // requires walking the entire tree repeatedly and most pages don't actually |
198 // feature so we shouldn't take the performance hit when not needed. Long term
we should | 200 // use either feature so we shouldn't take the performance hit when not |
199 // rewrite the counter and quotes code. | 201 // needed. Long term we should rewrite the counter and quotes code. |
200 void addLayoutCounter() { m_layoutCounterCount++; } | 202 void addLayoutCounter() { m_layoutCounterCount++; } |
201 void removeLayoutCounter() { | 203 void removeLayoutCounter() { |
202 ASSERT(m_layoutCounterCount > 0); | 204 ASSERT(m_layoutCounterCount > 0); |
203 m_layoutCounterCount--; | 205 m_layoutCounterCount--; |
204 } | 206 } |
205 bool hasLayoutCounters() { return m_layoutCounterCount; } | 207 bool hasLayoutCounters() { return m_layoutCounterCount; } |
206 | 208 |
207 bool backgroundIsKnownToBeOpaqueInRect( | 209 bool backgroundIsKnownToBeOpaqueInRect( |
208 const LayoutRect& localRect) const override; | 210 const LayoutRect& localRect) const override; |
209 | 211 |
210 // Returns the viewport size in (CSS pixels) that vh and vw units are calculat
ed from. | 212 // Returns the viewport size in (CSS pixels) that vh and vw units are |
| 213 // calculated from. |
211 FloatSize viewportSizeForViewportUnits() const; | 214 FloatSize viewportSizeForViewportUnits() const; |
212 | 215 |
213 void pushLayoutState(LayoutState& layoutState) { | 216 void pushLayoutState(LayoutState& layoutState) { |
214 m_layoutState = &layoutState; | 217 m_layoutState = &layoutState; |
215 } | 218 } |
216 void popLayoutState() { | 219 void popLayoutState() { |
217 ASSERT(m_layoutState); | 220 ASSERT(m_layoutState); |
218 m_layoutState = m_layoutState->next(); | 221 m_layoutState = m_layoutState->next(); |
219 } | 222 } |
220 | 223 |
221 LayoutRect visualOverflowRect() const override; | 224 LayoutRect visualOverflowRect() const override; |
222 LayoutRect localOverflowRectForPaintInvalidation() const override; | 225 LayoutRect localOverflowRectForPaintInvalidation() const override; |
223 | 226 |
224 // Invalidates paint for the entire view, including composited descendants, bu
t not including child frames. | 227 // Invalidates paint for the entire view, including composited descendants, |
| 228 // but not including child frames. |
225 // It is very likely you do not want to call this method. | 229 // It is very likely you do not want to call this method. |
226 void setShouldDoFullPaintInvalidationForViewAndAllDescendants(); | 230 void setShouldDoFullPaintInvalidationForViewAndAllDescendants(); |
227 | 231 |
228 // The document scrollbar is always on the right, even in RTL. This is to prev
ent it from moving around on navigations. | 232 // The document scrollbar is always on the right, even in RTL. This is to |
229 // TODO(skobes): This is not quite the ideal behavior, see http://crbug.com/25
0514 and http://crbug.com/249860. | 233 // prevent it from moving around on navigations. |
| 234 // TODO(skobes): This is not quite the ideal behavior, see |
| 235 // http://crbug.com/250514 and http://crbug.com/249860. |
230 bool shouldPlaceBlockDirectionScrollbarOnLogicalLeft() const override { | 236 bool shouldPlaceBlockDirectionScrollbarOnLogicalLeft() const override { |
231 return false; | 237 return false; |
232 } | 238 } |
233 | 239 |
234 // Some LayoutMedias want to know about their viewport visibility for | 240 // Some LayoutMedias want to know about their viewport visibility for |
235 // crbug.com/487345,402044 . This facility will be removed once those | 241 // crbug.com/487345,402044 . This facility will be removed once those |
236 // experiments complete. | 242 // experiments complete. |
237 // TODO(ojan): Merge this with IntersectionObserver once it lands. | 243 // TODO(ojan): Merge this with IntersectionObserver once it lands. |
238 void registerMediaForPositionChangeNotification(LayoutMedia&); | 244 void registerMediaForPositionChangeNotification(LayoutMedia&); |
239 void unregisterMediaForPositionChangeNotification(LayoutMedia&); | 245 void unregisterMediaForPositionChangeNotification(LayoutMedia&); |
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322 Persistent<HitTestCache> m_hitTestCache; | 328 Persistent<HitTestCache> m_hitTestCache; |
323 | 329 |
324 Vector<LayoutMedia*> m_mediaForPositionNotification; | 330 Vector<LayoutMedia*> m_mediaForPositionNotification; |
325 }; | 331 }; |
326 | 332 |
327 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutView, isLayoutView()); | 333 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutView, isLayoutView()); |
328 | 334 |
329 } // namespace blink | 335 } // namespace blink |
330 | 336 |
331 #endif // LayoutView_h | 337 #endif // LayoutView_h |
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