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// Copyright (c) 2008, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * 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.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "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 THE COPYRIGHT
// OWNER 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 "ScrollbarThemeChromium.h"
#include "NotImplemented.h"
#include "PlatformContextSkia.h"
#include "PlatformMouseEvent.h"
#include "Scrollbar.h"
#include "gtkdrawing.h"
#include "GdkSkia.h"
#include <gtk/gtk.h>
namespace WebCore {
int ScrollbarThemeChromium::scrollbarThickness(ScrollbarControlSize controlSize)
{
static int size = 0;
if (!size) {
MozGtkScrollbarMetrics metrics;
moz_gtk_get_scrollbar_metrics(&metrics);
size = metrics.slider_width;
}
return size;
}
bool ScrollbarThemeChromium::invalidateOnMouseEnterExit()
{
notImplemented();
return false;
}
// -----------------------------------------------------------------------------
// Given an uninitialised widget state object, set the members such that it's
// sane for drawing scrollbars
// -----------------------------------------------------------------------------
static void initMozState(GtkWidgetState* mozState)
{
mozState->active = true;
mozState->focused = false;
mozState->inHover = false;
mozState->disabled = false;
mozState->isDefault = false;
mozState->canDefault = false;
mozState->depressed = false;
mozState->curpos = 0;
mozState->maxpos = 0;
}
// -----------------------------------------------------------------------------
// Paint a GTK widget
// gc: context to draw onto
// rect: the area of the widget
// widget_type: the type of widget to draw
// flags: widget dependent flags (e.g. direction of scrollbar arrows etc)
// -----------------------------------------------------------------------------
static void paintScrollbarWidget(GraphicsContext* gc, const IntRect& rect,
GtkThemeWidgetType widget_type, gint flags)
{
PlatformContextSkia* pcs = gc->platformContext();
GdkRectangle sbrect;
sbrect.x = rect.x();
sbrect.y = rect.y();
sbrect.width = rect.width();
sbrect.height = rect.height();
GtkWidgetState mozState;
initMozState(&mozState);
moz_gtk_widget_paint(widget_type, pcs->gdk_skia(), &sbrect, &sbrect, &mozState,
flags, GTK_TEXT_DIR_LTR);
}
void ScrollbarThemeChromium::paintTrackPiece(GraphicsContext* gc, Scrollbar* scrollbar,
const IntRect& rect, ScrollbarPart partType)
{
const bool horz = scrollbar->orientation() == HorizontalScrollbar;
const GtkThemeWidgetType track_type =
horz ? MOZ_GTK_SCROLLBAR_TRACK_HORIZONTAL : MOZ_GTK_SCROLLBAR_TRACK_VERTICAL;
paintScrollbarWidget(gc, rect, track_type, 0);
return;
}
void ScrollbarThemeChromium::paintButton(GraphicsContext* gc, Scrollbar* scrollbar,
const IntRect& rect, ScrollbarPart part)
{
const bool horz = scrollbar->orientation() == HorizontalScrollbar;
gint flags = horz ? 0 : MOZ_GTK_STEPPER_VERTICAL;
flags |= ForwardButtonEndPart == part ? MOZ_GTK_STEPPER_DOWN : 0;
paintScrollbarWidget(gc, rect, MOZ_GTK_SCROLLBAR_BUTTON, flags);
}
void ScrollbarThemeChromium::paintThumb(GraphicsContext* gc, Scrollbar* scrollbar, const IntRect& rect)
{
const bool horz = scrollbar->orientation() == HorizontalScrollbar;
const GtkThemeWidgetType thumb_type =
horz ? MOZ_GTK_SCROLLBAR_THUMB_HORIZONTAL : MOZ_GTK_SCROLLBAR_THUMB_VERTICAL;
paintScrollbarWidget(gc, rect, thumb_type, 0);
}
} // namespace WebCore
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