[poc] curve-filter

third_party/WebKit/Source/core/input/EventHandler.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2012 Digia Plc. and/or its subsidiary(-ies)
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
@@ skipping 73 matching lines @@
 #include "core/style/ComputedStyle.h"
 #include "core/svg/SVGDocumentExtensions.h"
 #include "platform/PlatformGestureEvent.h"
 #include "platform/PlatformKeyboardEvent.h"
 #include "platform/PlatformTouchEvent.h"
 #include "platform/PlatformWheelEvent.h"
 #include "platform/RuntimeEnabledFeatures.h"
 #include "platform/TraceEvent.h"
 #include "platform/WindowsKeyboardCodes.h"
 #include "platform/geometry/FloatPoint.h"
+#include "platform/graphics/GraphicsScreen.h"
 #include "platform/graphics/Image.h"
 #include "platform/heap/Handle.h"
 #include "platform/scroll/ScrollAnimatorBase.h"
 #include "platform/scroll/Scrollbar.h"
 #include "wtf/Assertions.h"
 #include "wtf/CurrentTime.h"
 #include "wtf/StdLibExtras.h"
 #include "wtf/TemporaryChange.h"
 
 namespace blink {
@@ skipping 3338 matching lines @@
     // We are starting a text/image/url drag, so the cursor should be an arrow
     // FIXME <rdar://7577595>: Custom cursors aren't supported during drag and drop (default to pointer).
     m_frame->view()->setCursor(pointerCursor());
 
     if (initiator == DragInitiator::Mouse && !dragHysteresisExceeded(event.event().position()))
         return true;
 
     // Once we're past the hysteresis point, we don't want to treat this gesture as a click
     invalidateClick();
 
-    if (!tryStartDrag(event)) {
-        // Something failed to start the drag, clean up.
+    uintptr_t previousId = setCurrentScreenId(Page::screenId(m_frame->page()));
+    bool dragStarted = tryStartDrag(event);
+    setCurrentScreenId(previousId);
+
+    if (!dragStarted) { // Something failed to start the drag, clean up.
         clearDragDataTransfer();
         dragState().m_dragSrc = nullptr;
     }
 
     m_mouseDownMayStartDrag = false;
     // Whether or not the drag actually started, no more default handling (like selection).
     return true;
 }
 
 bool EventHandler::tryStartDrag(const MouseEventWithHitTestResults& event)
@@ skipping 677 matching lines @@
 PlatformEvent::Modifiers EventHandler::accessKeyModifiers()
 {
 #if OS(MACOSX)
     return static_cast<PlatformEvent::Modifiers>(PlatformEvent::CtrlKey | PlatformEvent::AltKey);
 #else
     return PlatformEvent::AltKey;
 #endif
 }
 
 } // namespace blink