/*
* Copyright (C) 2006 Apple Computer, Inc. All rights reserved.
* Copyright (C) 2007 Holger Hans Peter Freyther zecke@selfish.org
* 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 "PlatformScrollBar.h"
#include "IntRect.h"
#include "GraphicsContext.h"
#include "FrameView.h"
#include "NotImplemented.h"
#include <gtk/gtk.h>
#include <cairo/cairo.h>
#include <stdio.h>
using namespace WebCore;
PlatformScrollbar::PlatformScrollbar(ScrollbarClient* client, ScrollbarOrientation orientation,
ScrollbarControlSize controlSize)
: Scrollbar(client, orientation, controlSize)
, m_adjustment(GTK_ADJUSTMENT(gtk_adjustment_new(0.0, 0.0, 0.0, 0.0, 0.0, 0.0)))
{
GtkScrollbar* scrollBar = orientation == HorizontalScrollbar ?
GTK_SCROLLBAR(::gtk_hscrollbar_new(m_adjustment)) :
GTK_SCROLLBAR(::gtk_vscrollbar_new(m_adjustment));
gtk_widget_show(GTK_WIDGET(scrollBar));
g_object_ref(G_OBJECT(scrollBar));
g_signal_connect(G_OBJECT(scrollBar), "value-changed", G_CALLBACK(PlatformScrollbar::gtkValueChanged), this);
setGtkWidget(GTK_WIDGET(scrollBar));
/*
* assign a sane default width and height to the ScrollBar, otherwise
* we will end up with a 0 width scrollbar.
*/
resize(PlatformScrollbar::horizontalScrollbarHeight(),
PlatformScrollbar::verticalScrollbarWidth());
}
PlatformScrollbar::~PlatformScrollbar()
{
/*
* the Widget does not take over ownership.
*/
g_signal_handlers_disconnect_by_func(G_OBJECT(gtkWidget()), (gpointer)PlatformScrollbar::gtkValueChanged, this);
g_object_unref(G_OBJECT(gtkWidget()));
}
int PlatformScrollbar::width() const
{
return Widget::width();
}
int PlatformScrollbar::height() const
{
return Widget::height();
}
void PlatformScrollbar::setEnabled(bool enabled)
{
Widget::setEnabled(enabled);
}
void PlatformScrollbar::paint(GraphicsContext* graphicsContext, const IntRect& damageRect)
{
Widget::paint(graphicsContext, damageRect);
}
void PlatformScrollbar::updateThumbPosition()
{
if (m_adjustment->value != m_currentPos) {
m_adjustment->value = m_currentPos;
gtk_adjustment_value_changed(m_adjustment);
}
}
void PlatformScrollbar::updateThumbProportion()
{
m_adjustment->step_increment = m_lineStep;
m_adjustment->page_increment = m_pageStep;
m_adjustment->page_size = m_visibleSize;
m_adjustment->upper = m_totalSize;
gtk_adjustment_changed(m_adjustment);
}
void PlatformScrollbar::setRect(const IntRect& rect)
{
setFrameGeometry(rect);
geometryChanged();
}
void PlatformScrollbar::geometryChanged()
{
if (!parent())
return;
ASSERT(parent()->isFrameView());
FrameView* frameView = static_cast<FrameView*>(parent());
IntRect windowRect = IntRect(frameView->contentsToWindow(frameGeometry().location()), frameGeometry().size());
GtkAllocation allocation = { windowRect.x(), windowRect.y(), windowRect.width(), windowRect.height() };
gtk_widget_size_allocate(gtkWidget(), &allocation);
}
void PlatformScrollbar::gtkValueChanged(GtkAdjustment*, PlatformScrollbar* that)
{
that->setValue(gtk_adjustment_get_value(that->m_adjustment));
}