| /* |
| * 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 blink { |
| |
| 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; |
| } |
| |
| } |