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1 /* | 1 /* |
2 * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserv
ed. | 2 * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserv
ed. |
3 * Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org) | 3 * Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org) |
4 * Copyright (C) 2012 Digia Plc. and/or its subsidiary(-ies) | 4 * Copyright (C) 2012 Digia Plc. and/or its subsidiary(-ies) |
5 * | 5 * |
6 * Redistribution and use in source and binary forms, with or without | 6 * Redistribution and use in source and binary forms, with or without |
7 * modification, are permitted provided that the following conditions | 7 * modification, are permitted provided that the following conditions |
8 * are met: | 8 * are met: |
9 * 1. Redistributions of source code must retain the above copyright | 9 * 1. Redistributions of source code must retain the above copyright |
10 * notice, this list of conditions and the following disclaimer. | 10 * notice, this list of conditions and the following disclaimer. |
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226 , m_selectionInitiationState(HaveNotStartedSelection) | 226 , m_selectionInitiationState(HaveNotStartedSelection) |
227 , m_hoverTimer(this, &EventHandler::hoverTimerFired) | 227 , m_hoverTimer(this, &EventHandler::hoverTimerFired) |
228 , m_cursorUpdateTimer(this, &EventHandler::cursorUpdateTimerFired) | 228 , m_cursorUpdateTimer(this, &EventHandler::cursorUpdateTimerFired) |
229 , m_mouseDownMayStartAutoscroll(false) | 229 , m_mouseDownMayStartAutoscroll(false) |
230 , m_fakeMouseMoveEventTimer(this, &EventHandler::fakeMouseMoveEventTimerFire
d) | 230 , m_fakeMouseMoveEventTimer(this, &EventHandler::fakeMouseMoveEventTimerFire
d) |
231 , m_svgPan(false) | 231 , m_svgPan(false) |
232 , m_resizeScrollableArea(nullptr) | 232 , m_resizeScrollableArea(nullptr) |
233 , m_eventHandlerWillResetCapturingMouseEventsNode(0) | 233 , m_eventHandlerWillResetCapturingMouseEventsNode(0) |
234 , m_clickCount(0) | 234 , m_clickCount(0) |
235 , m_shouldOnlyFireDragOverEvent(false) | 235 , m_shouldOnlyFireDragOverEvent(false) |
| 236 , m_unusedDelta(FloatSize()) |
| 237 , m_accumulatedRootOverscroll(FloatSize()) |
236 , m_mousePositionIsUnknown(true) | 238 , m_mousePositionIsUnknown(true) |
237 , m_mouseDownTimestamp(0) | 239 , m_mouseDownTimestamp(0) |
238 , m_widgetIsLatched(false) | 240 , m_widgetIsLatched(false) |
239 , m_touchPressed(false) | 241 , m_touchPressed(false) |
240 , m_scrollGestureHandlingNode(nullptr) | 242 , m_scrollGestureHandlingNode(nullptr) |
241 , m_lastGestureScrollOverWidget(false) | 243 , m_lastGestureScrollOverWidget(false) |
242 , m_maxMouseMovedDuration(0) | 244 , m_maxMouseMovedDuration(0) |
243 , m_longTapShouldInvokeContextMenu(false) | 245 , m_longTapShouldInvokeContextMenu(false) |
244 , m_activeIntervalTimer(this, &EventHandler::activeIntervalTimerFired) | 246 , m_activeIntervalTimer(this, &EventHandler::activeIntervalTimerFired) |
245 , m_lastShowPressTimestamp(0) | 247 , m_lastShowPressTimestamp(0) |
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917 | 919 |
918 return result; | 920 return result; |
919 } | 921 } |
920 | 922 |
921 void EventHandler::stopAutoscroll() | 923 void EventHandler::stopAutoscroll() |
922 { | 924 { |
923 if (AutoscrollController* controller = autoscrollController()) | 925 if (AutoscrollController* controller = autoscrollController()) |
924 controller->stopAutoscroll(); | 926 controller->stopAutoscroll(); |
925 } | 927 } |
926 | 928 |
927 bool EventHandler::scroll(ScrollDirection direction, ScrollGranularity granulari
ty, Node* startNode, Node** stopNode, float delta, IntPoint absolutePoint) | 929 ScrollResultOneDimensional EventHandler::scroll(ScrollDirection direction, Scrol
lGranularity granularity, Node* startNode, Node** stopNode, float delta, IntPoin
t absolutePoint) |
928 { | 930 { |
929 if (!delta) | 931 if (!delta) |
930 return false; | 932 return ScrollResultOneDimensional(false); |
931 | 933 |
932 Node* node = startNode; | 934 Node* node = startNode; |
933 | 935 |
934 if (!node) | 936 if (!node) |
935 node = m_frame->document()->focusedElement(); | 937 node = m_frame->document()->focusedElement(); |
936 | 938 |
937 if (!node) | 939 if (!node) |
938 node = m_mousePressNode.get(); | 940 node = m_mousePressNode.get(); |
939 | 941 |
940 if (!node || !node->layoutObject()) | 942 if (!node || !node->layoutObject()) |
941 return false; | 943 return ScrollResultOneDimensional(false, delta); |
942 | 944 |
943 LayoutBox* curBox = node->layoutObject()->enclosingBox(); | 945 LayoutBox* curBox = node->layoutObject()->enclosingBox(); |
944 while (curBox && !curBox->isLayoutView()) { | 946 while (curBox && !curBox->isLayoutView()) { |
945 ScrollDirection physicalDirection = toPhysicalDirection( | 947 ScrollDirection physicalDirection = toPhysicalDirection( |
946 direction, curBox->isHorizontalWritingMode(), curBox->style()->isFli
ppedBlocksWritingMode()); | 948 direction, curBox->isHorizontalWritingMode(), curBox->style()->isFli
ppedBlocksWritingMode()); |
947 | 949 |
948 // If we're at the stopNode, we should try to scroll it but we shouldn't
bubble past it | 950 // If we're at the stopNode, we should try to scroll it but we shouldn't
bubble past it |
949 bool shouldStopBubbling = stopNode && *stopNode && curBox->node() == *st
opNode; | 951 bool shouldStopBubbling = stopNode && *stopNode && curBox->node() == *st
opNode; |
950 bool didScroll = curBox->scroll(physicalDirection, granularity, delta); | 952 ScrollResultOneDimensional result = curBox->scroll(physicalDirection, gr
anularity, delta); |
951 | 953 |
952 if (didScroll && stopNode) | 954 if (result.didScroll && stopNode) |
953 *stopNode = curBox->node(); | 955 *stopNode = curBox->node(); |
954 | 956 |
955 if (didScroll || shouldStopBubbling) { | 957 if (result.didScroll || shouldStopBubbling) { |
956 setFrameWasScrolledByUser(); | 958 setFrameWasScrolledByUser(); |
957 return true; | 959 result.didScroll = true; |
| 960 return result; |
958 } | 961 } |
959 | 962 |
960 curBox = curBox->containingBlock(); | 963 curBox = curBox->containingBlock(); |
961 } | 964 } |
962 | 965 |
963 return false; | 966 return ScrollResultOneDimensional(false, delta); |
964 } | 967 } |
965 | 968 |
966 void EventHandler::customizedScroll(const Node& startNode, ScrollState& scrollSt
ate) | 969 void EventHandler::customizedScroll(const Node& startNode, ScrollState& scrollSt
ate) |
967 { | 970 { |
968 if (scrollState.fullyConsumed()) | 971 if (scrollState.fullyConsumed()) |
969 return; | 972 return; |
970 | 973 |
971 if (m_currentScrollChain.isEmpty()) | 974 if (m_currentScrollChain.isEmpty()) |
972 recomputeScrollChain(*m_frame, startNode, m_currentScrollChain); | 975 recomputeScrollChain(*m_frame, startNode, m_currentScrollChain); |
973 scrollState.setScrollChain(m_currentScrollChain); | 976 scrollState.setScrollChain(m_currentScrollChain); |
974 scrollState.distributeToScrollChainDescendant(); | 977 scrollState.distributeToScrollChainDescendant(); |
975 } | 978 } |
976 | 979 |
977 bool EventHandler::bubblingScroll(ScrollDirection direction, ScrollGranularity g
ranularity, Node* startingNode) | 980 bool EventHandler::bubblingScroll(ScrollDirection direction, ScrollGranularity g
ranularity, Node* startingNode) |
978 { | 981 { |
979 // The layout needs to be up to date to determine if we can scroll. We may b
e | 982 // The layout needs to be up to date to determine if we can scroll. We may b
e |
980 // here because of an onLoad event, in which case the final layout hasn't be
en performed yet. | 983 // here because of an onLoad event, in which case the final layout hasn't be
en performed yet. |
981 m_frame->document()->updateLayoutIgnorePendingStylesheets(); | 984 m_frame->document()->updateLayoutIgnorePendingStylesheets(); |
982 // FIXME: enable scroll customization in this case. See crbug.com/410974. | 985 // FIXME: enable scroll customization in this case. See crbug.com/410974. |
983 if (scroll(direction, granularity, startingNode)) | 986 if (scroll(direction, granularity, startingNode).didScroll) |
984 return true; | 987 return true; |
985 LocalFrame* frame = m_frame; | 988 LocalFrame* frame = m_frame; |
986 FrameView* view = frame->view(); | 989 FrameView* view = frame->view(); |
987 if (view && view->scroll(direction, granularity)) { | 990 if (view && view->scroll(direction, granularity).didScroll) { |
988 setFrameWasScrolledByUser(); | 991 setFrameWasScrolledByUser(); |
989 return true; | 992 return true; |
990 } | 993 } |
991 Frame* parentFrame = frame->tree().parent(); | 994 Frame* parentFrame = frame->tree().parent(); |
992 if (!parentFrame || !parentFrame->isLocalFrame()) | 995 if (!parentFrame || !parentFrame->isLocalFrame()) |
993 return false; | 996 return false; |
994 // FIXME: Broken for OOPI. | 997 // FIXME: Broken for OOPI. |
995 return toLocalFrame(parentFrame)->eventHandler().bubblingScroll(direction, g
ranularity, m_frame->deprecatedLocalOwner()); | 998 return toLocalFrame(parentFrame)->eventHandler().bubblingScroll(direction, g
ranularity, m_frame->deprecatedLocalOwner()); |
996 } | 999 } |
997 | 1000 |
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2193 | 2196 |
2194 Node* stopNode = m_previousWheelScrolledNode.get(); | 2197 Node* stopNode = m_previousWheelScrolledNode.get(); |
2195 ScrollGranularity granularity = wheelGranularityToScrollGranularity(wheelEve
nt); | 2198 ScrollGranularity granularity = wheelGranularityToScrollGranularity(wheelEve
nt); |
2196 IntPoint absolutePosition = roundedIntPoint(wheelEvent->absoluteLocation()); | 2199 IntPoint absolutePosition = roundedIntPoint(wheelEvent->absoluteLocation()); |
2197 | 2200 |
2198 // Break up into two scrolls if we need to. Diagonal movement on | 2201 // Break up into two scrolls if we need to. Diagonal movement on |
2199 // a MacBook pro is an example of a 2-dimensional mouse wheel event (where b
oth deltaX and deltaY can be set). | 2202 // a MacBook pro is an example of a 2-dimensional mouse wheel event (where b
oth deltaX and deltaY can be set). |
2200 | 2203 |
2201 // FIXME: enable scroll customization in this case. See crbug.com/410974. | 2204 // FIXME: enable scroll customization in this case. See crbug.com/410974. |
2202 if (wheelEvent->railsMode() != Event::RailsModeVertical | 2205 if (wheelEvent->railsMode() != Event::RailsModeVertical |
2203 && scroll(ScrollRight, granularity, startNode, &stopNode, wheelEvent->de
ltaX(), absolutePosition)) | 2206 && scroll(ScrollRight, granularity, startNode, &stopNode, wheelEvent->de
ltaX(), absolutePosition).didScroll) |
2204 wheelEvent->setDefaultHandled(); | 2207 wheelEvent->setDefaultHandled(); |
2205 | 2208 |
2206 if (wheelEvent->railsMode() != Event::RailsModeHorizontal | 2209 if (wheelEvent->railsMode() != Event::RailsModeHorizontal |
2207 && scroll(ScrollDown, granularity, startNode, &stopNode, wheelEvent->del
taY(), absolutePosition)) | 2210 && scroll(ScrollDown, granularity, startNode, &stopNode, wheelEvent->del
taY(), absolutePosition).didScroll) |
2208 wheelEvent->setDefaultHandled(); | 2211 wheelEvent->setDefaultHandled(); |
2209 | 2212 |
2210 if (!m_latchedWheelEventNode) | 2213 if (!m_latchedWheelEventNode) |
2211 m_previousWheelScrolledNode = stopNode; | 2214 m_previousWheelScrolledNode = stopNode; |
2212 } | 2215 } |
2213 | 2216 |
2214 bool EventHandler::handleGestureShowPress() | 2217 bool EventHandler::handleGestureShowPress() |
2215 { | 2218 { |
2216 m_lastShowPressTimestamp = WTF::currentTime(); | 2219 m_lastShowPressTimestamp = WTF::currentTime(); |
2217 | 2220 |
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2698 m_previousGestureScrolledNode = scrollState->currentNativeScrollingE
lement(); | 2701 m_previousGestureScrolledNode = scrollState->currentNativeScrollingE
lement(); |
2699 m_deltaConsumedForScrollSequence = scrollState->deltaConsumedForScro
llSequence(); | 2702 m_deltaConsumedForScrollSequence = scrollState->deltaConsumedForScro
llSequence(); |
2700 scrolled = scrollState->deltaX() != gestureEvent.deltaX() | 2703 scrolled = scrollState->deltaX() != gestureEvent.deltaX() |
2701 || scrollState->deltaY() != gestureEvent.deltaY(); | 2704 || scrollState->deltaY() != gestureEvent.deltaY(); |
2702 } else { | 2705 } else { |
2703 if (gestureEvent.preventPropagation()) | 2706 if (gestureEvent.preventPropagation()) |
2704 stopNode = m_previousGestureScrolledNode.get(); | 2707 stopNode = m_previousGestureScrolledNode.get(); |
2705 | 2708 |
2706 // First try to scroll the closest scrollable LayoutBox ancestor of
|node|. | 2709 // First try to scroll the closest scrollable LayoutBox ancestor of
|node|. |
2707 ScrollGranularity granularity = ScrollByPrecisePixel; | 2710 ScrollGranularity granularity = ScrollByPrecisePixel; |
2708 bool horizontalScroll = scroll(ScrollLeft, granularity, node, &stopN
ode, delta.width()); | 2711 m_unusedDelta = FloatSize(); |
| 2712 ScrollResultOneDimensional result = scroll(ScrollLeft, granularity,
node, &stopNode, delta.width()); |
| 2713 bool horizontalScroll = result.didScroll; |
2709 if (!gestureEvent.preventPropagation()) | 2714 if (!gestureEvent.preventPropagation()) |
2710 stopNode = nullptr; | 2715 stopNode = nullptr; |
2711 bool verticalScroll = scroll(ScrollUp, granularity, node, &stopNode,
delta.height()); | 2716 result = scroll(ScrollUp, granularity, node, &stopNode, delta.height
()); |
| 2717 bool verticalScroll = result.didScroll; |
2712 scrolled = horizontalScroll || verticalScroll; | 2718 scrolled = horizontalScroll || verticalScroll; |
2713 | 2719 |
2714 if (gestureEvent.preventPropagation()) | 2720 if (gestureEvent.preventPropagation()) |
2715 m_previousGestureScrolledNode = stopNode; | 2721 m_previousGestureScrolledNode = stopNode; |
| 2722 |
| 2723 if (horizontalScroll) { |
| 2724 m_accumulatedRootOverscroll.setWidth(0); |
| 2725 m_unusedDelta.setWidth(0); |
| 2726 } |
| 2727 |
| 2728 if (verticalScroll) { |
| 2729 m_accumulatedRootOverscroll.setHeight(0); |
| 2730 m_unusedDelta.setHeight(0); |
| 2731 } |
2716 } | 2732 } |
2717 if (scrolled) { | 2733 if (scrolled) { |
2718 setFrameWasScrolledByUser(); | 2734 setFrameWasScrolledByUser(); |
2719 return true; | 2735 return true; |
2720 } | 2736 } |
2721 } | 2737 } |
2722 | 2738 |
2723 if (RuntimeEnabledFeatures::scrollCustomizationEnabled()) | 2739 if (RuntimeEnabledFeatures::scrollCustomizationEnabled()) |
2724 return false; | 2740 return false; |
2725 | 2741 |
2726 // Try to scroll the frame view. | 2742 // Try to scroll the frame view. |
2727 if (m_frame->applyScrollDelta(delta, false)) { | 2743 ScrollResult resultScrollDelta = m_frame->applyScrollDelta(delta, false); |
| 2744 m_unusedDelta.setWidth(resultScrollDelta.unusedScrollDeltaX); |
| 2745 m_unusedDelta.setHeight(resultScrollDelta.unusedScrollDeltaY); |
| 2746 if (m_frame->isMainFrame() && m_unusedDelta != FloatSize()) { |
| 2747 m_accumulatedRootOverscroll += m_unusedDelta; |
| 2748 FloatPoint position = FloatPoint(gestureEvent.position().x(), gestureEve
nt.position().y()); |
| 2749 FloatSize velocity = FloatSize(gestureEvent.velocityX(), gestureEvent.ve
locityY()); |
| 2750 m_frame->chromeClient().didOverscroll(m_unusedDelta, m_accumulatedRootOv
erscroll, position, velocity); |
| 2751 } |
| 2752 |
| 2753 if (resultScrollDelta.didScroll) { |
2728 setFrameWasScrolledByUser(); | 2754 setFrameWasScrolledByUser(); |
2729 return true; | 2755 return true; |
2730 } | 2756 } |
2731 | 2757 |
2732 return false; | 2758 return false; |
2733 } | 2759 } |
2734 | 2760 |
2735 void EventHandler::clearGestureScrollNodes() | 2761 void EventHandler::clearGestureScrollNodes() |
2736 { | 2762 { |
2737 m_scrollGestureHandlingNode = nullptr; | 2763 m_scrollGestureHandlingNode = nullptr; |
2738 m_previousGestureScrolledNode = nullptr; | 2764 m_previousGestureScrolledNode = nullptr; |
2739 m_deltaConsumedForScrollSequence = false; | 2765 m_deltaConsumedForScrollSequence = false; |
2740 m_currentScrollChain.clear(); | 2766 m_currentScrollChain.clear(); |
| 2767 m_accumulatedRootOverscroll = FloatSize(); |
| 2768 m_unusedDelta = FloatSize(); |
2741 } | 2769 } |
2742 | 2770 |
2743 bool EventHandler::isScrollbarHandlingGestures() const | 2771 bool EventHandler::isScrollbarHandlingGestures() const |
2744 { | 2772 { |
2745 return m_scrollbarHandlingScrollGesture.get(); | 2773 return m_scrollbarHandlingScrollGesture.get(); |
2746 } | 2774 } |
2747 | 2775 |
2748 bool EventHandler::shouldApplyTouchAdjustment(const PlatformGestureEvent& event)
const | 2776 bool EventHandler::shouldApplyTouchAdjustment(const PlatformGestureEvent& event)
const |
2749 { | 2777 { |
2750 if (m_frame->settings() && !m_frame->settings()->touchAdjustmentEnabled()) | 2778 if (m_frame->settings() && !m_frame->settings()->touchAdjustmentEnabled()) |
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3632 | 3660 |
3633 void EventHandler::defaultSpaceEventHandler(KeyboardEvent* event) | 3661 void EventHandler::defaultSpaceEventHandler(KeyboardEvent* event) |
3634 { | 3662 { |
3635 ASSERT(event->type() == EventTypeNames::keypress); | 3663 ASSERT(event->type() == EventTypeNames::keypress); |
3636 | 3664 |
3637 if (event->ctrlKey() || event->metaKey() || event->altKey()) | 3665 if (event->ctrlKey() || event->metaKey() || event->altKey()) |
3638 return; | 3666 return; |
3639 | 3667 |
3640 ScrollDirection direction = event->shiftKey() ? ScrollBlockDirectionBackward
: ScrollBlockDirectionForward; | 3668 ScrollDirection direction = event->shiftKey() ? ScrollBlockDirectionBackward
: ScrollBlockDirectionForward; |
3641 // FIXME: enable scroll customization in this case. See crbug.com/410974. | 3669 // FIXME: enable scroll customization in this case. See crbug.com/410974. |
3642 if (scroll(direction, ScrollByPage)) { | 3670 if (scroll(direction, ScrollByPage).didScroll) { |
3643 event->setDefaultHandled(); | 3671 event->setDefaultHandled(); |
3644 return; | 3672 return; |
3645 } | 3673 } |
3646 | 3674 |
3647 FrameView* view = m_frame->view(); | 3675 FrameView* view = m_frame->view(); |
3648 if (!view) | 3676 if (!view) |
3649 return; | 3677 return; |
3650 | 3678 |
3651 if (view->scroll(direction, ScrollByPage)) | 3679 if (view->scroll(direction, ScrollByPage).didScroll) |
3652 event->setDefaultHandled(); | 3680 event->setDefaultHandled(); |
3653 } | 3681 } |
3654 | 3682 |
3655 void EventHandler::defaultBackspaceEventHandler(KeyboardEvent* event) | 3683 void EventHandler::defaultBackspaceEventHandler(KeyboardEvent* event) |
3656 { | 3684 { |
3657 ASSERT(event->type() == EventTypeNames::keydown); | 3685 ASSERT(event->type() == EventTypeNames::keydown); |
3658 | 3686 |
3659 if (event->ctrlKey() || event->metaKey() || event->altKey()) | 3687 if (event->ctrlKey() || event->metaKey() || event->altKey()) |
3660 return; | 3688 return; |
3661 | 3689 |
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4164 unsigned EventHandler::accessKeyModifiers() | 4192 unsigned EventHandler::accessKeyModifiers() |
4165 { | 4193 { |
4166 #if OS(MACOSX) | 4194 #if OS(MACOSX) |
4167 return PlatformEvent::CtrlKey | PlatformEvent::AltKey; | 4195 return PlatformEvent::CtrlKey | PlatformEvent::AltKey; |
4168 #else | 4196 #else |
4169 return PlatformEvent::AltKey; | 4197 return PlatformEvent::AltKey; |
4170 #endif | 4198 #endif |
4171 } | 4199 } |
4172 | 4200 |
4173 } // namespace blink | 4201 } // namespace blink |
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