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| 1 /* | 1 /* | 
| 2  * Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies) | 2  * Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies) | 
| 3  * | 3  * | 
| 4  * This library is free software; you can redistribute it and/or | 4  * This library is free software; you can redistribute it and/or | 
| 5  * modify it under the terms of the GNU Library General Public | 5  * modify it under the terms of the GNU Library General Public | 
| 6  * License as published by the Free Software Foundation; either | 6  * License as published by the Free Software Foundation; either | 
| 7  * version 2 of the License, or (at your option) any later version. | 7  * version 2 of the License, or (at your option) any later version. | 
| 8  * | 8  * | 
| 9  * This library is distributed in the hope that it will be useful, | 9  * This library is distributed in the hope that it will be useful, | 
| 10  * but WITHOUT ANY WARRANTY; without even the implied warranty of | 10  * but WITHOUT ANY WARRANTY; without even the implied warranty of | 
| 11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU | 11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU | 
| 12  * Library General Public License for more details. | 12  * Library General Public License for more details. | 
| 13  * | 13  * | 
| 14  * You should have received a copy of the GNU Library General Public License | 14  * You should have received a copy of the GNU Library General Public License | 
| 15  * along with this library; see the file COPYING.LIB.  If not, write to | 15  * along with this library; see the file COPYING.LIB.  If not, write to | 
| 16  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | 16  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | 
| 17  * Boston, MA 02110-1301, USA. | 17  * Boston, MA 02110-1301, USA. | 
| 18  */ | 18  */ | 
| 19 | 19 | 
| 20 #include "config.h" | 20 #include "config.h" | 
| 21 | 21 | 
| 22 #include "core/page/TouchAdjustment.h" | 22 #include "core/page/TouchAdjustment.h" | 
| 23 | 23 | 
| 24 #include "core/dom/ContainerNode.h" | 24 #include "core/dom/ContainerNode.h" | 
| 25 #include "core/dom/Node.h" | 25 #include "core/dom/Node.h" | 
| 26 #include "core/dom/NodeLayoutStyle.h" | 26 #include "core/dom/NodeComputedStyle.h" | 
| 27 #include "core/dom/Text.h" | 27 #include "core/dom/Text.h" | 
| 28 #include "core/editing/Editor.h" | 28 #include "core/editing/Editor.h" | 
| 29 #include "core/frame/FrameView.h" | 29 #include "core/frame/FrameView.h" | 
| 30 #include "core/frame/LocalFrame.h" | 30 #include "core/frame/LocalFrame.h" | 
| 31 #include "core/html/HTMLFrameOwnerElement.h" | 31 #include "core/html/HTMLFrameOwnerElement.h" | 
| 32 #include "core/layout/LayoutBox.h" | 32 #include "core/layout/LayoutBox.h" | 
| 33 #include "core/layout/LayoutObject.h" | 33 #include "core/layout/LayoutObject.h" | 
| 34 #include "core/layout/LayoutText.h" | 34 #include "core/layout/LayoutText.h" | 
| 35 #include "core/layout/style/LayoutStyle.h" | 35 #include "core/layout/style/ComputedStyle.h" | 
| 36 #include "platform/geometry/FloatPoint.h" | 36 #include "platform/geometry/FloatPoint.h" | 
| 37 #include "platform/geometry/FloatQuad.h" | 37 #include "platform/geometry/FloatQuad.h" | 
| 38 #include "platform/geometry/IntSize.h" | 38 #include "platform/geometry/IntSize.h" | 
| 39 #include "platform/text/TextBreakIterator.h" | 39 #include "platform/text/TextBreakIterator.h" | 
| 40 | 40 | 
| 41 namespace blink { | 41 namespace blink { | 
| 42 | 42 | 
| 43 namespace TouchAdjustment { | 43 namespace TouchAdjustment { | 
| 44 | 44 | 
| 45 const float zeroTolerance = 1e-6f; | 45 const float zeroTolerance = 1e-6f; | 
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| 87         Element* element = toElement(node); | 87         Element* element = toElement(node); | 
| 88         // Tapping on a text field or other focusable item should trigger adjust
     ment, except | 88         // Tapping on a text field or other focusable item should trigger adjust
     ment, except | 
| 89         // that iframe elements are hard-coded to support focus but the effect i
     s often invisible | 89         // that iframe elements are hard-coded to support focus but the effect i
     s often invisible | 
| 90         // so they should be excluded. | 90         // so they should be excluded. | 
| 91         if (element->isMouseFocusable() && !isHTMLIFrameElement(element)) | 91         if (element->isMouseFocusable() && !isHTMLIFrameElement(element)) | 
| 92             return true; | 92             return true; | 
| 93         // Accept nodes that has a CSS effect when touched. | 93         // Accept nodes that has a CSS effect when touched. | 
| 94         if (element->childrenOrSiblingsAffectedByActive() || element->childrenOr
     SiblingsAffectedByHover()) | 94         if (element->childrenOrSiblingsAffectedByActive() || element->childrenOr
     SiblingsAffectedByHover()) | 
| 95             return true; | 95             return true; | 
| 96     } | 96     } | 
| 97     if (const LayoutStyle* layoutStyle = node->layoutStyle()) { | 97     if (const ComputedStyle* computedStyle = node->computedStyle()) { | 
| 98         if (layoutStyle->affectedByActive() || layoutStyle->affectedByHover()) | 98         if (computedStyle->affectedByActive() || computedStyle->affectedByHover(
     )) | 
| 99             return true; | 99             return true; | 
| 100     } | 100     } | 
| 101     return false; | 101     return false; | 
| 102 } | 102 } | 
| 103 | 103 | 
| 104 bool nodeIsZoomTarget(Node* node) | 104 bool nodeIsZoomTarget(Node* node) | 
| 105 { | 105 { | 
| 106     if (node->isTextNode() || node->isShadowRoot()) | 106     if (node->isTextNode() || node->isShadowRoot()) | 
| 107         return false; | 107         return false; | 
| 108 | 108 | 
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| 498 | 498 | 
| 499 bool findBestZoomableArea(Node*& targetNode, IntRect& targetArea, const IntPoint
     & touchHotspot, const IntRect& touchArea, const WillBeHeapVector<RefPtrWillBeMem
     ber<Node>>& nodes) | 499 bool findBestZoomableArea(Node*& targetNode, IntRect& targetArea, const IntPoint
     & touchHotspot, const IntRect& touchArea, const WillBeHeapVector<RefPtrWillBeMem
     ber<Node>>& nodes) | 
| 500 { | 500 { | 
| 501     IntPoint targetPoint; | 501     IntPoint targetPoint; | 
| 502     TouchAdjustment::SubtargetGeometryList subtargets; | 502     TouchAdjustment::SubtargetGeometryList subtargets; | 
| 503     TouchAdjustment::compileZoomableSubtargets(nodes, subtargets); | 503     TouchAdjustment::compileZoomableSubtargets(nodes, subtargets); | 
| 504     return TouchAdjustment::findNodeWithLowestDistanceMetric(targetNode, targetP
     oint, targetArea, touchHotspot, touchArea, subtargets, TouchAdjustment::zoomable
     IntersectionQuotient); | 504     return TouchAdjustment::findNodeWithLowestDistanceMetric(targetNode, targetP
     oint, targetArea, touchHotspot, touchArea, subtargets, TouchAdjustment::zoomable
     IntersectionQuotient); | 
| 505 } | 505 } | 
| 506 | 506 | 
| 507 } // namespace blink | 507 } // namespace blink | 
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