1 /*
2 * Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
3 * Copyright (C) 2004, 2005, 2007 Rob Buis <buis@kde.org>
4 * Copyright (C) 2007 Eric Seidel <eric@webkit.org>
5 * Copyright (C) 2009 Google, Inc.
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Library General Public License for more details.
16 *
17 * You should have received a copy of the GNU Library General Public License
18 * along with this library; see the file COPYING.LIB. If not, write to
19 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 * Boston, MA 02110-1301, USA.
21 */
22
23 #include "config.h"
24
25 #if ENABLE(SVG)
26 #include "RenderSVGViewportContainer.h"
27
28 #include "GraphicsContext.h"
29 #include "RenderView.h"
30 #include "SVGNames.h"
31 #include "SVGSVGElement.h"
32
33 namespace WebCore {
34
RenderSVGViewportContainer(SVGStyledElement * node)35 RenderSVGViewportContainer::RenderSVGViewportContainer(SVGStyledElement* node)
36 : RenderSVGContainer(node)
37 {
38 }
39
applyViewportClip(PaintInfo & paintInfo)40 void RenderSVGViewportContainer::applyViewportClip(PaintInfo& paintInfo)
41 {
42 if (SVGRenderSupport::isOverflowHidden(this))
43 paintInfo.context->clip(m_viewport);
44 }
45
calcViewport()46 void RenderSVGViewportContainer::calcViewport()
47 {
48 SVGElement* element = static_cast<SVGElement*>(node());
49 if (element->hasTagName(SVGNames::svgTag)) {
50 SVGSVGElement* svg = static_cast<SVGSVGElement*>(element);
51
52 FloatRect oldViewport = m_viewport;
53 m_viewport = FloatRect(svg->x().value(svg)
54 , svg->y().value(svg)
55 , svg->width().value(svg)
56 , svg->height().value(svg));
57
58 if (oldViewport != m_viewport)
59 setNeedsBoundariesUpdate();
60 }
61 }
62
viewportTransform() const63 AffineTransform RenderSVGViewportContainer::viewportTransform() const
64 {
65 if (node()->hasTagName(SVGNames::svgTag)) {
66 SVGSVGElement* svg = static_cast<SVGSVGElement*>(node());
67 return svg->viewBoxToViewTransform(m_viewport.width(), m_viewport.height());
68 }
69
70 return AffineTransform();
71 }
72
localToParentTransform() const73 const AffineTransform& RenderSVGViewportContainer::localToParentTransform() const
74 {
75 m_localToParentTransform = AffineTransform::translation(m_viewport.x(), m_viewport.y()) * viewportTransform();
76 return m_localToParentTransform;
77 // If this class were ever given a localTransform(), then the above would read:
78 // return viewportTranslation * localTransform() * viewportTransform()
79 }
80
pointIsInsideViewportClip(const FloatPoint & pointInParent)81 bool RenderSVGViewportContainer::pointIsInsideViewportClip(const FloatPoint& pointInParent)
82 {
83 // Respect the viewport clip (which is in parent coords)
84 if (!SVGRenderSupport::isOverflowHidden(this))
85 return true;
86
87 return m_viewport.contains(pointInParent);
88 }
89
90 }
91
92 #endif // ENABLE(SVG)
93