1 /*

     2     Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>

     3                   2004, 2005, 2007 Rob Buis <buis@kde.org>

     4                   2007 Eric Seidel <eric@webkit.org>

     5                   2009 Google, Inc.

     6     Copyright (C) Research In Motion Limited 2009-2010. All rights reserved.

     7 

     8     This library is free software; you can redistribute it and/or

     9     modify it under the terms of the GNU Library General Public

    10     License as published by the Free Software Foundation; either

    11     version 2 of the License, or (at your option) any later version.

    12 

    13     This library is distributed in the hope that it will be useful,

    14     but WITHOUT ANY WARRANTY; without even the implied warranty of

    15     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

    16     Library General Public License for more details.

    17 

    18     You should have received a copy of the GNU Library General Public License

    19     aint with this library; see the file COPYING.LIB.  If not, write to

    20     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,

    21     Boston, MA 02110-1301, USA.

    22 */

    23 

    24 #include "config.h"

    25 

    26 #if ENABLE(SVG)

    27 #include "RenderSVGViewportContainer.h"

    28 

    29 #include "GraphicsContext.h"

    30 #include "RenderView.h"

    31 #include "SVGSVGElement.h"

    32 

    33 namespace WebCore {

    34 

    35 RenderSVGViewportContainer::RenderSVGViewportContainer(SVGStyledElement* node)

    36     : RenderSVGContainer(node)

    37 {

    38 }

    39 

    40 void RenderSVGViewportContainer::applyViewportClip(PaintInfo& paintInfo)

    41 {

    42     if (SVGRenderSupport::isOverflowHidden(this))

    43         paintInfo.context->clip(m_viewport);

    44 }

    45 

    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          m_viewport = FloatRect(svg->x().value(svg)

    52                                 , svg->y().value(svg)

    53                                 , svg->width().value(svg)

    54                                 , svg->height().value(svg));

    55     }

    56 }

    57 

    58 AffineTransform RenderSVGViewportContainer::viewportTransform() const

    59 {

    60     if (node()->hasTagName(SVGNames::svgTag)) {

    61         SVGSVGElement* svg = static_cast<SVGSVGElement*>(node());

    62         return svg->viewBoxToViewTransform(m_viewport.width(), m_viewport.height());

    63     }

    64 

    65     return AffineTransform();

    66 }

    67 

    68 const AffineTransform& RenderSVGViewportContainer::localToParentTransform() const

    69 {

    70     AffineTransform viewportTranslation(viewportTransform());

    71     m_localToParentTransform = viewportTranslation.translateRight(m_viewport.x(), m_viewport.y());

    72     return m_localToParentTransform;

    73     // If this class were ever given a localTransform(), then the above would read:

    74     // return viewportTransform() * localTransform() * viewportTranslation;

    75 }

    76 

    77 bool RenderSVGViewportContainer::pointIsInsideViewportClip(const FloatPoint& pointInParent)

    78 {

    79     // Respect the viewport clip (which is in parent coords)

    80     if (!SVGRenderSupport::isOverflowHidden(this))

    81         return true;

    82     

    83     return m_viewport.contains(pointInParent);

    84 }

    85 

    86 }

    87 

    88 #endif // ENABLE(SVG)