| /* |
| * Copyright (C) 1999 Antti Koivisto (koivisto@kde.org) |
| * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| * |
| */ |
| |
| #include "config.h" |
| #include "ShadowData.h" |
| |
| #include "FloatRect.h" |
| #include "IntRect.h" |
| |
| using namespace std; |
| |
| namespace WebCore { |
| |
| ShadowData::ShadowData(const ShadowData& o) |
| : m_x(o.m_x) |
| , m_y(o.m_y) |
| , m_blur(o.m_blur) |
| , m_spread(o.m_spread) |
| , m_color(o.m_color) |
| , m_style(o.m_style) |
| , m_isWebkitBoxShadow(o.m_isWebkitBoxShadow) |
| { |
| m_next = o.m_next ? new ShadowData(*o.m_next) : 0; |
| } |
| |
| bool ShadowData::operator==(const ShadowData& o) const |
| { |
| if ((m_next && !o.m_next) || (!m_next && o.m_next) |
| || (m_next && o.m_next && *m_next != *o.m_next)) |
| return false; |
| |
| return m_x == o.m_x |
| && m_y == o.m_y |
| && m_blur == o.m_blur |
| && m_spread == o.m_spread |
| && m_style == o.m_style |
| && m_color == o.m_color |
| && m_isWebkitBoxShadow == o.m_isWebkitBoxShadow; |
| } |
| |
| static inline void calculateShadowExtent(const ShadowData* shadow, int additionalOutlineSize, int& shadowLeft, int& shadowRight, int& shadowTop, int& shadowBottom) |
| { |
| do { |
| int blurAndSpread = shadow->blur() + shadow->spread() + additionalOutlineSize; |
| if (shadow->style() == Normal) { |
| shadowLeft = min(shadow->x() - blurAndSpread, shadowLeft); |
| shadowRight = max(shadow->x() + blurAndSpread, shadowRight); |
| shadowTop = min(shadow->y() - blurAndSpread, shadowTop); |
| shadowBottom = max(shadow->y() + blurAndSpread, shadowBottom); |
| } |
| |
| shadow = shadow->next(); |
| } while (shadow); |
| } |
| |
| void ShadowData::adjustRectForShadow(IntRect& rect, int additionalOutlineSize) const |
| { |
| int shadowLeft = 0; |
| int shadowRight = 0; |
| int shadowTop = 0; |
| int shadowBottom = 0; |
| calculateShadowExtent(this, additionalOutlineSize, shadowLeft, shadowRight, shadowTop, shadowBottom); |
| |
| rect.move(shadowLeft, shadowTop); |
| rect.setWidth(rect.width() - shadowLeft + shadowRight); |
| rect.setHeight(rect.height() - shadowTop + shadowBottom); |
| } |
| |
| void ShadowData::adjustRectForShadow(FloatRect& rect, int additionalOutlineSize) const |
| { |
| int shadowLeft = 0; |
| int shadowRight = 0; |
| int shadowTop = 0; |
| int shadowBottom = 0; |
| calculateShadowExtent(this, additionalOutlineSize, shadowLeft, shadowRight, shadowTop, shadowBottom); |
| |
| rect.move(shadowLeft, shadowTop); |
| rect.setWidth(rect.width() - shadowLeft + shadowRight); |
| rect.setHeight(rect.height() - shadowTop + shadowBottom); |
| } |
| |
| } // namespace WebCore |