/* * Copyright (C) 2006, 2007, 2008 Apple Computer, Inc. All rights reserved. * Copyright (C) 2006 Michael Emmel mike.emmel@gmail.com * Copyright (C) 2007, 2009 Holger Hans Peter Freyther * Copyright (C) 2008, 2010 Collabora Ltd. * * All rights reserved. * * 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 COMPUTER, 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 COMPUTER, 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 "ScrollView.h" #include "HostWindow.h" #include "MainFrameScrollbarGtk.h" #include "ScrollbarTheme.h" #include <gtk/gtk.h> using namespace std; namespace WebCore { PassRefPtr<Scrollbar> ScrollView::createScrollbar(ScrollbarOrientation orientation) { // If this is an interior frame scrollbar, we want to create a totally fake // scrollbar with no GtkAdjustment backing it. if (parent() || (hostWindow() && !hostWindow()->platformPageClient())) return Scrollbar::createNativeScrollbar(this, orientation, RegularScrollbar); // If this is the main frame, we want to create a Scrollbar that does no painting // and defers to our GtkAdjustment for all of its state. Note that the GtkAdjustment // may be null here. if (orientation == HorizontalScrollbar) return MainFrameScrollbarGtk::create(this, orientation); // VerticalScrollbar return MainFrameScrollbarGtk::create(this, orientation); } IntRect ScrollView::visibleContentRect(bool includeScrollbars) const { // If we are an interior frame scrollbar or are in some sort of transition // state, just calculate our size based on what the GTK+ theme says the // scrollbar width should be. if (parent() || !hostWindow() || !hostWindow()->platformPageClient()) { return IntRect(IntPoint(m_scrollOffset.width(), m_scrollOffset.height()), IntSize(max(0, m_boundsSize.width() - (verticalScrollbar() && !includeScrollbars ? verticalScrollbar()->width() : 0)), max(0, m_boundsSize.height() - (horizontalScrollbar() && !includeScrollbars ? horizontalScrollbar()->height() : 0)))); } // We don't have a parent, so we are the main frame and thus have // a parent widget which we can use to measure the visible region. GtkWidget* measuredWidget = hostWindow()->platformPageClient(); GtkWidget* parentWidget = gtk_widget_get_parent(measuredWidget); // We may not be in a widget that displays scrollbars, but we may // have other kinds of decoration that make us smaller. if (parentWidget && includeScrollbars) measuredWidget = parentWidget; GtkAllocation allocation; gtk_widget_get_allocation(measuredWidget, &allocation); return IntRect(IntPoint(m_scrollOffset.width(), m_scrollOffset.height()), IntSize(allocation.width, allocation.height)); } void ScrollView::setScrollbarModes(ScrollbarMode horizontalMode, ScrollbarMode verticalMode, bool horizontalLock, bool verticalLock) { // FIXME: Restructure the ScrollView abstraction so that we do not have to // copy this verbatim from ScrollView.cpp. Until then, we should make sure this // is kept in sync. bool needsUpdate = false; if (horizontalMode != horizontalScrollbarMode() && !m_horizontalScrollbarLock) { m_horizontalScrollbarMode = horizontalMode; needsUpdate = true; } if (verticalMode != verticalScrollbarMode() && !m_verticalScrollbarLock) { m_verticalScrollbarMode = verticalMode; needsUpdate = true; } if (horizontalLock) setHorizontalScrollbarLock(); if (verticalLock) setVerticalScrollbarLock(); if (needsUpdate) updateScrollbars(scrollOffset()); // We don't need to report policy changes on ScrollView's unless this // one has an adjustment attached and it is a main frame. if (parent() || !isFrameView()) return; // For frames that do have adjustments attached, we want to report // policy changes, so that they may be applied to the widget to // which the WebView's container (e.g. GtkScrolledWindow). if (hostWindow()) hostWindow()->scrollbarsModeDidChange(); } }