| /* |
| * 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 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 "FloatRect.h" |
| #include "GraphicsContext.h" |
| #include "HostWindow.h" |
| #include "IntRect.h" |
| #include "PlatformMouseEvent.h" |
| #include "PlatformWheelEvent.h" |
| #include "ScrollbarGtk.h" |
| #include "ScrollbarTheme.h" |
| |
| #include <gtk/gtk.h> |
| |
| using namespace std; |
| |
| namespace WebCore { |
| |
| void ScrollView::platformInit() |
| { |
| m_horizontalAdjustment = 0; |
| m_verticalAdjustment = 0; |
| } |
| |
| void ScrollView::platformDestroy() |
| { |
| m_horizontalAdjustment = 0; |
| m_verticalAdjustment = 0; |
| } |
| |
| PassRefPtr<Scrollbar> ScrollView::createScrollbar(ScrollbarOrientation orientation) |
| { |
| if (orientation == HorizontalScrollbar && m_horizontalAdjustment) |
| return ScrollbarGtk::createScrollbar(this, orientation, m_horizontalAdjustment); |
| else if (orientation == VerticalScrollbar && m_verticalAdjustment) |
| return ScrollbarGtk::createScrollbar(this, orientation, m_verticalAdjustment); |
| else |
| return Scrollbar::createNativeScrollbar(this, orientation, RegularScrollbar); |
| } |
| |
| /* |
| * The following is assumed: |
| * (hadj && vadj) || (!hadj && !vadj) |
| */ |
| void ScrollView::setGtkAdjustments(GtkAdjustment* hadj, GtkAdjustment* vadj) |
| { |
| ASSERT(!hadj == !vadj); |
| |
| m_horizontalAdjustment = hadj; |
| m_verticalAdjustment = vadj; |
| |
| // Reset the adjustments to a sane default |
| if (m_horizontalAdjustment) { |
| m_horizontalAdjustment->lower = 0; |
| m_horizontalAdjustment->upper = 0; |
| m_horizontalAdjustment->value = 0; |
| gtk_adjustment_changed(m_horizontalAdjustment); |
| gtk_adjustment_value_changed(m_horizontalAdjustment); |
| |
| m_verticalAdjustment->lower = 0; |
| m_verticalAdjustment->upper = 0; |
| m_verticalAdjustment->value = 0; |
| gtk_adjustment_changed(m_verticalAdjustment); |
| gtk_adjustment_value_changed(m_verticalAdjustment); |
| } |
| |
| /* reconsider having a scrollbar */ |
| setHasVerticalScrollbar(false); |
| setHasHorizontalScrollbar(false); |
| updateScrollbars(m_scrollOffset); |
| } |
| |
| void ScrollView::platformAddChild(Widget* child) |
| { |
| if (!GTK_IS_SOCKET(child->platformWidget())) |
| gtk_container_add(GTK_CONTAINER(hostWindow()->platformWindow()), child->platformWidget()); |
| } |
| |
| void ScrollView::platformRemoveChild(Widget* child) |
| { |
| GtkWidget* parent; |
| |
| // HostWindow can be NULL here. If that's the case |
| // let's grab the child's parent instead. |
| if (hostWindow()) |
| parent = GTK_WIDGET(hostWindow()->platformWindow()); |
| else |
| parent = GTK_WIDGET(child->platformWidget()->parent); |
| |
| if (GTK_IS_CONTAINER(parent) && parent == child->platformWidget()->parent) |
| gtk_container_remove(GTK_CONTAINER(parent), child->platformWidget()); |
| } |
| |
| IntRect ScrollView::visibleContentRect(bool includeScrollbars) const |
| { |
| if (!m_horizontalAdjustment) |
| return IntRect(IntPoint(m_scrollOffset.width(), m_scrollOffset.height()), |
| IntSize(max(0, width() - (verticalScrollbar() && !includeScrollbars ? verticalScrollbar()->width() : 0)), |
| max(0, height() - (horizontalScrollbar() && !includeScrollbars ? horizontalScrollbar()->height() : 0)))); |
| |
| // Main frame. |
| GtkWidget* measuredWidget = hostWindow()->platformWindow(); |
| GtkWidget* parent = 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 (parent && includeScrollbars) |
| measuredWidget = parent; |
| |
| return IntRect(IntPoint(m_scrollOffset.width(), m_scrollOffset.height()), |
| IntSize(measuredWidget->allocation.width, |
| measuredWidget->allocation.height)); |
| } |
| |
| } |