/* * Copyright (C) 2007 Alp Toker * Copyright (C) 2008 Dirk Schulze * * 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" #if ENABLE(SVG) #include "SVGResourceClipper.h" #include "AffineTransform.h" #include "CairoPath.h" #include "GraphicsContext.h" #include namespace WebCore { void SVGResourceClipper::applyClip(GraphicsContext* context, const FloatRect& boundingBox) const { cairo_t* cr = context->platformContext(); if (m_clipData.clipData().size() < 1) return; cairo_reset_clip(cr); context->beginPath(); for (unsigned int x = 0; x < m_clipData.clipData().size(); x++) { ClipData data = m_clipData.clipData()[x]; Path path = data.path; if (path.isEmpty()) continue; path.closeSubpath(); if (data.bboxUnits) { // Make use of the clipping units AffineTransform transform; transform.translate(boundingBox.x(), boundingBox.y()); transform.scale(boundingBox.width(), boundingBox.height()); path.transform(transform); } cairo_path_t* clipPath = cairo_copy_path(path.platformPath()->m_cr); cairo_append_path(cr, clipPath); cairo_set_fill_rule(cr, data.windRule == RULE_EVENODD ? CAIRO_FILL_RULE_EVEN_ODD : CAIRO_FILL_RULE_WINDING); } cairo_clip(cr); } } // namespace WebCore #endif