1 /*

     2     Copyright (C) 2004, 2005, 2006 Nikolas Zimmermann <wildfox@kde.org>

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

     4                   2005 Eric Seidel <eric.seidel@kdemail.net>

     5 

     6     This file is part of the KDE project

     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) && ENABLE(SVG_EXPERIMENTAL_FEATURES)

    27 #include "SVGResourceFilter.h"

    28 

    29 #include "SVGRenderTreeAsText.h"

    30 #include "SVGFilterEffect.h"

    31 #include "TextStream.h"

    32 

    33 namespace WebCore {

    34 

    35 void SVGResourceFilter::clearEffects()

    36 {

    37     m_effects.clear();

    38 }

    39 

    40 void SVGResourceFilter::addFilterEffect(SVGFilterEffect* effect)

    41 {

    42     ASSERT(effect);

    43 

    44     if (effect)

    45         m_effects.append(effect);

    46 }

    47 

    48 FloatRect SVGResourceFilter::filterBBoxForItemBBox(FloatRect itemBBox) const

    49 {

    50     FloatRect filterBBox = filterRect();

    51 

    52     if (filterBoundingBoxMode())

    53         filterBBox = FloatRect(filterBBox.x() * itemBBox.width(),

    54                                filterBBox.y() * itemBBox.height(),

    55                                filterBBox.width() * itemBBox.width(),

    56                                filterBBox.height() * itemBBox.height());

    57 

    58     return filterBBox;

    59 }

    60 

    61 TextStream& SVGResourceFilter::externalRepresentation(TextStream& ts) const

    62 {

    63     ts << "[type=FILTER] ";

    64 

    65     FloatRect bbox = filterRect();

    66     static FloatRect defaultFilterRect(0, 0, 1, 1);

    67 

    68     if (!filterBoundingBoxMode() || bbox != defaultFilterRect) {

    69         ts << " [bounding box=";

    70         if (filterBoundingBoxMode()) {

    71             bbox.scale(100.f);

    72             ts << "at (" << bbox.x() << "%," <<  bbox.y() << "%) size " << bbox.width() << "%x" << bbox.height() << "%";

    73         } else

    74             ts << filterRect();

    75         ts << "]";

    76     }

    77 

    78     if (!filterBoundingBoxMode()) // default is true

    79         ts << " [bounding box mode=" << filterBoundingBoxMode() << "]";

    80     if (effectBoundingBoxMode()) // default is false

    81         ts << " [effect bounding box mode=" << effectBoundingBoxMode() << "]";

    82     if (m_effects.size() > 0)

    83         ts << " [effects=" << m_effects << "]";

    84 

    85     return ts;

    86 }

    87 

    88 SVGResourceFilter* getFilterById(Document* document, const AtomicString& id)

    89 {

    90     SVGResource* resource = getResourceById(document, id);

    91     if (resource && resource->isFilter())

    92         return static_cast<SVGResourceFilter*>(resource);

    93 

    94     return 0;

    95 }

    96 

    97 

    98 } // namespace WebCore

    99 

   100 #endif // ENABLE(SVG)