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| 1 /* | 1 /* |
| 2 * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights
reserved. | 2 * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights
reserved. |
| 3 * | 3 * |
| 4 * Portions are Copyright (C) 1998 Netscape Communications Corporation. | 4 * Portions are Copyright (C) 1998 Netscape Communications Corporation. |
| 5 * | 5 * |
| 6 * Other contributors: | 6 * Other contributors: |
| 7 * Robert O'Callahan <roc+@cs.cmu.edu> | 7 * Robert O'Callahan <roc+@cs.cmu.edu> |
| 8 * David Baron <dbaron@fas.harvard.edu> | 8 * David Baron <dbaron@fas.harvard.edu> |
| 9 * Christian Biesinger <cbiesinger@web.de> | 9 * Christian Biesinger <cbiesinger@web.de> |
| 10 * Randall Jesup <rjesup@wgate.com> | 10 * Randall Jesup <rjesup@wgate.com> |
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| 43 | 43 |
| 44 #include "config.h" | 44 #include "config.h" |
| 45 #include "core/layout/LayerClipper.h" | 45 #include "core/layout/LayerClipper.h" |
| 46 | 46 |
| 47 #include "core/frame/Settings.h" | 47 #include "core/frame/Settings.h" |
| 48 #include "core/layout/Layer.h" | 48 #include "core/layout/Layer.h" |
| 49 #include "core/rendering/RenderView.h" | 49 #include "core/rendering/RenderView.h" |
| 50 | 50 |
| 51 namespace blink { | 51 namespace blink { |
| 52 | 52 |
| 53 static void adjustClipRectsForChildren(const RenderObject& renderer, ClipRects&
clipRects) | 53 static void adjustClipRectsForChildren(const LayoutObject& renderer, ClipRects&
clipRects) |
| 54 { | 54 { |
| 55 EPosition position = renderer.style()->position(); | 55 EPosition position = renderer.style()->position(); |
| 56 // A fixed object is essentially the root of its containing block hierarchy,
so when | 56 // A fixed object is essentially the root of its containing block hierarchy,
so when |
| 57 // we encounter such an object, we reset our clip rects to the fixedClipRect
. | 57 // we encounter such an object, we reset our clip rects to the fixedClipRect
. |
| 58 if (position == FixedPosition) { | 58 if (position == FixedPosition) { |
| 59 clipRects.setPosClipRect(clipRects.fixedClipRect()); | 59 clipRects.setPosClipRect(clipRects.fixedClipRect()); |
| 60 clipRects.setOverflowClipRect(clipRects.fixedClipRect()); | 60 clipRects.setOverflowClipRect(clipRects.fixedClipRect()); |
| 61 clipRects.setFixed(true); | 61 clipRects.setFixed(true); |
| 62 } else if (position == RelativePosition) { | 62 } else if (position == RelativePosition) { |
| 63 clipRects.setPosClipRect(clipRects.overflowClipRect()); | 63 clipRects.setPosClipRect(clipRects.overflowClipRect()); |
| 64 } else if (position == AbsolutePosition) { | 64 } else if (position == AbsolutePosition) { |
| 65 clipRects.setOverflowClipRect(clipRects.posClipRect()); | 65 clipRects.setOverflowClipRect(clipRects.posClipRect()); |
| 66 } | 66 } |
| 67 } | 67 } |
| 68 | 68 |
| 69 static void applyClipRects(const ClipRectsContext& context, RenderObject& render
er, LayoutPoint offset, ClipRects& clipRects) | 69 static void applyClipRects(const ClipRectsContext& context, LayoutObject& render
er, LayoutPoint offset, ClipRects& clipRects) |
| 70 { | 70 { |
| 71 ASSERT(renderer.hasOverflowClip() || renderer.hasClip()); | 71 ASSERT(renderer.hasOverflowClip() || renderer.hasClip()); |
| 72 | 72 |
| 73 RenderView* view = renderer.view(); | 73 RenderView* view = renderer.view(); |
| 74 ASSERT(view); | 74 ASSERT(view); |
| 75 if (clipRects.fixed() && context.rootLayer->renderer() == view) | 75 if (clipRects.fixed() && context.rootLayer->renderer() == view) |
| 76 offset -= view->frameView()->scrollOffsetForViewportConstrainedObjects()
; | 76 offset -= view->frameView()->scrollOffsetForViewportConstrainedObjects()
; |
| 77 | 77 |
| 78 if (renderer.hasOverflowClip()) { | 78 if (renderer.hasOverflowClip()) { |
| 79 ClipRect newOverflowClip = toRenderBox(renderer).overflowClipRect(offset
, context.scrollbarRelevancy); | 79 ClipRect newOverflowClip = toRenderBox(renderer).overflowClipRect(offset
, context.scrollbarRelevancy); |
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| 365 ASSERT(current); | 365 ASSERT(current); |
| 366 if (current->transform() || current->isPaintInvalidationContainer()) | 366 if (current->transform() || current->isPaintInvalidationContainer()) |
| 367 return const_cast<Layer*>(current); | 367 return const_cast<Layer*>(current); |
| 368 } | 368 } |
| 369 | 369 |
| 370 ASSERT_NOT_REACHED(); | 370 ASSERT_NOT_REACHED(); |
| 371 return 0; | 371 return 0; |
| 372 } | 372 } |
| 373 | 373 |
| 374 } // namespace blink | 374 } // namespace blink |
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