/* * Copyright (C) 2006 Zack Rusin <zack@kde.org> * Copyright (C) 2014-2017 Igalia S.L. * * 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. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include "config.h" #include "EventHandler.h" #include "FocusController.h" #include "Frame.h" #include "FrameView.h" #include "KeyboardEvent.h" #include "MouseEventWithHitTestResults.h" #include "NotImplemented.h" #include "Page.h" #include "PlatformKeyboardEvent.h" #include "PlatformWheelEvent.h" #include "RenderWidget.h" #if ENABLE(DRAG_SUPPORT) #include "DataTransfer.h" #endif #if PLATFORM(GTK) #include "Scrollbar.h" #endif namespace WebCore { // GTK+ must scroll horizontally if the mouse pointer is on top of the // horizontal scrollbar while scrolling with the wheel; we need to // add the deltas and ticks here so that this behavior is consistent // for styled scrollbars. bool EventHandler::shouldSwapScrollDirection(const HitTestResult& result, const PlatformWheelEvent& event) const { #if PLATFORM(GTK) FrameView* view = m_frame.view(); Scrollbar* scrollbar = view ? view->scrollbarAtPoint(event.position()) : nullptr; if (!scrollbar) scrollbar = result.scrollbar(); if (!scrollbar) return false; // The directions are already swapped when shift key is pressed, but when scrolling // over scrollbars we always want to follow the scrollbar direction. return scrollbar->orientation() == HorizontalScrollbar ? !event.shiftKey() : event.shiftKey(); #else UNUSED_PARAM(result); UNUSED_PARAM(event); notImplemented(); return false; #endif } }