| /* |
| * Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org> |
| * Copyright (C) 2004, 2005, 2007 Rob Buis <buis@kde.org> |
| * Copyright (C) 2007 Eric Seidel <eric@webkit.org> |
| * Copyright (C) 2009 Google, Inc. |
| * |
| * 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 "core/rendering/svg/RenderSVGViewportContainer.h" |
| |
| #include "core/paint/SVGContainerPainter.h" |
| #include "core/rendering/PaintInfo.h" |
| #include "core/rendering/svg/SVGRenderSupport.h" |
| #include "core/svg/SVGSVGElement.h" |
| #include "core/svg/SVGUseElement.h" |
| #include "platform/graphics/GraphicsContext.h" |
| |
| namespace blink { |
| |
| RenderSVGViewportContainer::RenderSVGViewportContainer(SVGElement* node) |
| : RenderSVGContainer(node) |
| , m_didTransformToRootUpdate(false) |
| , m_isLayoutSizeChanged(false) |
| , m_needsTransformUpdate(true) |
| { |
| } |
| |
| void RenderSVGViewportContainer::determineIfLayoutSizeChanged() |
| { |
| ASSERT(element()); |
| if (!isSVGSVGElement(*element())) |
| return; |
| |
| m_isLayoutSizeChanged = toSVGSVGElement(element())->hasRelativeLengths() && selfNeedsLayout(); |
| } |
| |
| void RenderSVGViewportContainer::calcViewport() |
| { |
| SVGElement* element = this->element(); |
| ASSERT(element); |
| if (!isSVGSVGElement(*element)) |
| return; |
| SVGSVGElement* svg = toSVGSVGElement(element); |
| FloatRect oldViewport = m_viewport; |
| |
| SVGLengthContext lengthContext(element); |
| m_viewport = FloatRect(svg->x()->currentValue()->value(lengthContext), svg->y()->currentValue()->value(lengthContext), svg->width()->currentValue()->value(lengthContext), svg->height()->currentValue()->value(lengthContext)); |
| |
| if (oldViewport != m_viewport) { |
| setNeedsBoundariesUpdate(); |
| setNeedsTransformUpdate(); |
| } |
| } |
| |
| bool RenderSVGViewportContainer::calculateLocalTransform() |
| { |
| m_didTransformToRootUpdate = m_needsTransformUpdate || SVGRenderSupport::transformToRootChanged(parent()); |
| if (!m_needsTransformUpdate) |
| return false; |
| |
| m_localToParentTransform = AffineTransform::translation(m_viewport.x(), m_viewport.y()) * viewportTransform(); |
| m_needsTransformUpdate = false; |
| return true; |
| } |
| |
| AffineTransform RenderSVGViewportContainer::viewportTransform() const |
| { |
| ASSERT(element()); |
| if (isSVGSVGElement(*element())) { |
| SVGSVGElement* svg = toSVGSVGElement(element()); |
| return svg->viewBoxToViewTransform(m_viewport.width(), m_viewport.height()); |
| } |
| |
| return AffineTransform(); |
| } |
| |
| bool RenderSVGViewportContainer::pointIsInsideViewportClip(const FloatPoint& pointInParent) |
| { |
| // Respect the viewport clip (which is in parent coords) |
| if (!SVGRenderSupport::isOverflowHidden(this)) |
| return true; |
| |
| return m_viewport.contains(pointInParent); |
| } |
| |
| void RenderSVGViewportContainer::paint(PaintInfo& paintInfo, const LayoutPoint& paintOffset) |
| { |
| SVGContainerPainter(*this).paint(paintInfo); |
| } |
| |
| } |