15c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)/* 25c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Copyright (C) 1999 Antti Koivisto (koivisto@kde.org) 35c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved. 45c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 55c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * This library is free software; you can redistribute it and/or 65c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * modify it under the terms of the GNU Library General Public 75c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * License as published by the Free Software Foundation; either 85c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * version 2 of the License, or (at your option) any later version. 95c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 105c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * This library is distributed in the hope that it will be useful, 115c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * but WITHOUT ANY WARRANTY; without even the implied warranty of 125c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 135c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Library General Public License for more details. 145c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 155c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * You should have received a copy of the GNU Library General Public License 165c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * along with this library; see the file COPYING.LIB. If not, write to 175c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 185c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Boston, MA 02110-1301, USA. 195c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 205c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) */ 215c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 225c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#include "config.h" 2353e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles)#include "core/rendering/style/ShadowData.h" 245c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 2553e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles)#include "core/platform/graphics/LayoutRect.h" 265c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 275c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)using namespace std; 285c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 295c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)namespace WebCore { 305c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 315c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)ShadowData::ShadowData(const ShadowData& o) 325c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) : m_location(o.m_location) 335c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) , m_blur(o.m_blur) 345c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) , m_spread(o.m_spread) 355c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) , m_color(o.m_color) 365c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) , m_style(o.m_style) 375c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) , m_next(o.m_next ? adoptPtr(new ShadowData(*o.m_next)) : nullptr) 385c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles){ 395c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 405c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 415c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)bool ShadowData::operator==(const ShadowData& o) const 425c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles){ 435c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) if ((m_next && !o.m_next) || (!m_next && o.m_next) 445c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) || (m_next && o.m_next && *m_next != *o.m_next)) 455c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return false; 4602772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch 475c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return m_location == o.m_location 485c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) && m_blur == o.m_blur 495c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) && m_spread == o.m_spread 505c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) && m_style == o.m_style 51e52495584422c5edb5b2944981473a2e208da323Torne (Richard Coles) && m_color == o.m_color; 525c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 535c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 545c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)static inline void calculateShadowExtent(const ShadowData* shadow, int additionalOutlineSize, int& shadowLeft, int& shadowRight, int& shadowTop, int& shadowBottom) 555c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles){ 565c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) do { 575c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) int blurAndSpread = shadow->blur() + shadow->spread() + additionalOutlineSize; 585c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) if (shadow->style() == Normal) { 595c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) shadowLeft = min(shadow->x() - blurAndSpread, shadowLeft); 605c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) shadowRight = max(shadow->x() + blurAndSpread, shadowRight); 615c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) shadowTop = min(shadow->y() - blurAndSpread, shadowTop); 625c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) shadowBottom = max(shadow->y() + blurAndSpread, shadowBottom); 635c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 645c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 655c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) shadow = shadow->next(); 665c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } while (shadow); 675c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 685c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 695c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)void ShadowData::adjustRectForShadow(LayoutRect& rect, int additionalOutlineSize) const 705c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles){ 715c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) int shadowLeft = 0; 725c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) int shadowRight = 0; 735c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) int shadowTop = 0; 745c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) int shadowBottom = 0; 755c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) calculateShadowExtent(this, additionalOutlineSize, shadowLeft, shadowRight, shadowTop, shadowBottom); 765c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 775c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) rect.move(shadowLeft, shadowTop); 785c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) rect.setWidth(rect.width() - shadowLeft + shadowRight); 795c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) rect.setHeight(rect.height() - shadowTop + shadowBottom); 805c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 815c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 825c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)void ShadowData::adjustRectForShadow(FloatRect& rect, int additionalOutlineSize) const 835c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles){ 845c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) int shadowLeft = 0; 855c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) int shadowRight = 0; 865c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) int shadowTop = 0; 875c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) int shadowBottom = 0; 885c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) calculateShadowExtent(this, additionalOutlineSize, shadowLeft, shadowRight, shadowTop, shadowBottom); 895c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 905c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) rect.move(shadowLeft, shadowTop); 915c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) rect.setWidth(rect.width() - shadowLeft + shadowRight); 925c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) rect.setHeight(rect.height() - shadowTop + shadowBottom); 935c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 945c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 955c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} // namespace WebCore 96