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| 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 "web/RotationViewportAnchor.h" | 5 #include "web/RotationViewportAnchor.h" |
| 6 | 6 |
| 7 #include "core/dom/ContainerNode.h" | 7 #include "core/dom/ContainerNode.h" |
| 8 #include "core/dom/Node.h" | 8 #include "core/dom/Node.h" |
| 9 #include "core/frame/FrameView.h" | 9 #include "core/frame/FrameView.h" |
| 10 #include "core/frame/LocalFrame.h" | 10 #include "core/frame/LocalFrame.h" |
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| 94 RotationViewportAnchor::~RotationViewportAnchor() | 94 RotationViewportAnchor::~RotationViewportAnchor() |
| 95 { | 95 { |
| 96 restoreToAnchor(); | 96 restoreToAnchor(); |
| 97 } | 97 } |
| 98 | 98 |
| 99 void RotationViewportAnchor::setAnchor() | 99 void RotationViewportAnchor::setAnchor() |
| 100 { | 100 { |
| 101 // FIXME: Scroll offsets are now fractional (DoublePoint and FloatPoint for
the FrameView and VisualViewport | 101 // FIXME: Scroll offsets are now fractional (DoublePoint and FloatPoint for
the FrameView and VisualViewport |
| 102 // respectively. This path should be rewritten without pixel snapping
. | 102 // respectively. This path should be rewritten without pixel snapping
. |
| 103 IntRect outerViewRect = m_rootFrameView->layoutViewportScrollableArea()->vis
ibleContentRect(IncludeScrollbars); | 103 IntRect outerViewRect = m_rootFrameView->layoutViewportScrollableArea()->vis
ibleContentRect(IncludeScrollbars); |
| 104 IntRect innerViewRect = enclosedIntRect(m_rootFrameView->scrollableArea()->v
isibleContentRectDouble()); | 104 IntRect innerViewRect = enclosedIntRect(m_rootFrameView->getScrollableArea()
->visibleContentRectDouble()); |
| 105 | 105 |
| 106 m_oldPageScaleFactor = m_visualViewport->scale(); | 106 m_oldPageScaleFactor = m_visualViewport->scale(); |
| 107 m_oldMinimumPageScaleFactor = m_pageScaleConstraintsSet.finalConstraints().m
inimumScale; | 107 m_oldMinimumPageScaleFactor = m_pageScaleConstraintsSet.finalConstraints().m
inimumScale; |
| 108 | 108 |
| 109 // Save the absolute location in case we won't find the anchor node, we'll f
all back to that. | 109 // Save the absolute location in case we won't find the anchor node, we'll f
all back to that. |
| 110 m_visualViewportInDocument = FloatPoint(m_rootFrameView->scrollableArea()->v
isibleContentRectDouble().location()); | 110 m_visualViewportInDocument = FloatPoint(m_rootFrameView->getScrollableArea()
->visibleContentRectDouble().location()); |
| 111 | 111 |
| 112 m_anchorNode.clear(); | 112 m_anchorNode.clear(); |
| 113 m_anchorNodeBounds = LayoutRect(); | 113 m_anchorNodeBounds = LayoutRect(); |
| 114 m_anchorInNodeCoords = FloatSize(); | 114 m_anchorInNodeCoords = FloatSize(); |
| 115 m_normalizedVisualViewportOffset = FloatSize(); | 115 m_normalizedVisualViewportOffset = FloatSize(); |
| 116 | 116 |
| 117 if (innerViewRect.isEmpty()) | 117 if (innerViewRect.isEmpty()) |
| 118 return; | 118 return; |
| 119 | 119 |
| 120 // Preserve origins at the absolute screen origin | 120 // Preserve origins at the absolute screen origin |
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| 204 anchorOffsetFromNode.scale(m_anchorInNodeCoords.width(), m_anchorInNodeCoord
s.height()); | 204 anchorOffsetFromNode.scale(m_anchorInNodeCoords.width(), m_anchorInNodeCoord
s.height()); |
| 205 FloatPoint anchorPoint = FloatPoint(currentNodeBounds.location()) + anchorOf
fsetFromNode; | 205 FloatPoint anchorPoint = FloatPoint(currentNodeBounds.location()) + anchorOf
fsetFromNode; |
| 206 | 206 |
| 207 // Compute the new origin point relative to the new anchor point | 207 // Compute the new origin point relative to the new anchor point |
| 208 FloatSize anchorOffsetFromOrigin = innerSize; | 208 FloatSize anchorOffsetFromOrigin = innerSize; |
| 209 anchorOffsetFromOrigin.scale(m_anchorInInnerViewCoords.width(), m_anchorInIn
nerViewCoords.height()); | 209 anchorOffsetFromOrigin.scale(m_anchorInInnerViewCoords.width(), m_anchorInIn
nerViewCoords.height()); |
| 210 return anchorPoint - anchorOffsetFromOrigin; | 210 return anchorPoint - anchorOffsetFromOrigin; |
| 211 } | 211 } |
| 212 | 212 |
| 213 } // namespace blink | 213 } // namespace blink |
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