/*
* Copyright (C) 2013 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:
* 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 GOOGLE, 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 "platform/OverscrollTheme.h"
namespace WebCore {
OverscrollTheme::OverscrollTheme()
{
#if USE(RUBBER_BANDING)
// Load the shadow and pattern for the overhang.
m_overhangShadow = Image::loadPlatformResource("overhangShadow");
m_overhangPattern = Image::loadPlatformResource("overhangPattern");
#endif
}
PassRefPtr<Image> OverscrollTheme::getOverhangImage()
{
return m_overhangPattern;
}
void OverscrollTheme::setUpOverhangShadowLayer(GraphicsLayer* overhangShadowLayer)
{
// The shadow texture is has a 1-pixel aperture in the center, so the division by
// two is doing an intentional round-down.
overhangShadowLayer->setContentsToNinePatch(
m_overhangShadow.get(),
IntRect(m_overhangShadow->width() / 2, m_overhangShadow->height() / 2, 1, 1));
}
void OverscrollTheme::updateOverhangShadowLayer(GraphicsLayer* shadowLayer, GraphicsLayer* rootContentLayer)
{
// Note that for the position, the division m_overhangShadow->width() / 2 is an intentional
// round-down, and that for the width and height, the 1-pixel aperture is being replaced
// by the root contents layer, hence subtracting 1 and adding the rootContentsLayer size.
IntRect shadowRect(
static_cast<int>(rootContentLayer->position().x()) - m_overhangShadow->width() / 2,
static_cast<int>(rootContentLayer->position().y()) - m_overhangShadow->height() / 2,
static_cast<int>(rootContentLayer->size().width()) + m_overhangShadow->width() - 1,
static_cast<int>(rootContentLayer->size().height()) + m_overhangShadow->height() - 1);
shadowLayer->setContentsRect(shadowRect);
}
OverscrollTheme* OverscrollTheme::theme()
{
DEFINE_STATIC_LOCAL(OverscrollTheme, theme, ());
return &theme;
}
}