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/*
* Copyright (C) 2006 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2007 Rob Buis <buis@kde.org>
* Copyright (C) 2008 Dirk Schulze <krit@webkit.org>
* Copyright (C) Research In Motion Limited 2010. All rights reserved.
*
* 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 "RenderSVGResource.h"
#include "RenderSVGResourceContainer.h"
#include "RenderSVGResourceSolidColor.h"
#include "SVGResources.h"
#include "SVGURIReference.h"
namespace WebCore {
static inline RenderSVGResource* requestPaintingResource(RenderSVGResourceMode mode, RenderObject* object, const RenderStyle* style, Color& fallbackColor)
{
ASSERT(object);
ASSERT(style);
// If we have no style at all, ignore it.
const SVGRenderStyle* svgStyle = style->svgStyle();
if (!svgStyle)
return 0;
// If we have no fill/stroke, return 0.
if (mode == ApplyToFillMode) {
if (!svgStyle->hasFill())
return 0;
} else {
if (!svgStyle->hasStroke())
return 0;
}
SVGPaint* paint = mode == ApplyToFillMode ? svgStyle->fillPaint() : svgStyle->strokePaint();
ASSERT(paint);
SVGPaint::SVGPaintType paintType = paint->paintType();
if (paintType == SVGPaint::SVG_PAINTTYPE_NONE)
return 0;
Color color;
if (paintType == SVGPaint::SVG_PAINTTYPE_RGBCOLOR
|| paintType == SVGPaint::SVG_PAINTTYPE_RGBCOLOR_ICCCOLOR
|| paintType == SVGPaint::SVG_PAINTTYPE_URI_RGBCOLOR
|| paintType == SVGPaint::SVG_PAINTTYPE_URI_RGBCOLOR_ICCCOLOR)
color = paint->color();
else if (paintType == SVGPaint::SVG_PAINTTYPE_CURRENTCOLOR || paintType == SVGPaint::SVG_PAINTTYPE_URI_CURRENTCOLOR)
color = style->visitedDependentColor(CSSPropertyColor);
if (style->insideLink() == InsideVisitedLink) {
RenderStyle* visitedStyle = style->getCachedPseudoStyle(VISITED_LINK);
ASSERT(visitedStyle);
if (SVGPaint* visitedPaint = mode == ApplyToFillMode ? visitedStyle->svgStyle()->fillPaint() : visitedStyle->svgStyle()->strokePaint()) {
// For SVG_PAINTTYPE_CURRENTCOLOR, 'color' already contains the 'visitedColor'.
if (visitedPaint->paintType() < SVGPaint::SVG_PAINTTYPE_URI_NONE && visitedPaint->paintType() != SVGPaint::SVG_PAINTTYPE_CURRENTCOLOR) {
const Color& visitedColor = visitedPaint->color();
if (visitedColor.isValid())
color = Color(visitedColor.red(), visitedColor.green(), visitedColor.blue(), color.alpha());
}
}
}
// If the primary resource is just a color, return immediately.
RenderSVGResourceSolidColor* colorResource = RenderSVGResource::sharedSolidPaintingResource();
if (paintType < SVGPaint::SVG_PAINTTYPE_URI_NONE) {
// If an invalid fill color is specified, fallback to fill/stroke="none".
if (!color.isValid())
return 0;
colorResource->setColor(color);
return colorResource;
}
// If no resources are associated with the given renderer, return the color resource.
SVGResources* resources = SVGResourcesCache::cachedResourcesForRenderObject(object);
if (!resources) {
// If a paint server is specified, and no or an invalid fallback color is given, default to fill/stroke="black".
if (!color.isValid())
color = Color::black;
colorResource->setColor(color);
return colorResource;
}
// If the requested resource is not available, return the color resource.
RenderSVGResource* uriResource = mode == ApplyToFillMode ? resources->fill() : resources->stroke();
if (!uriResource) {
// If a paint server is specified, and no or an invalid fallback color is given, default to fill/stroke="black".
if (!color.isValid())
color = Color::black;
colorResource->setColor(color);
return colorResource;
}
// The paint server resource exists, though it may be invalid (pattern with width/height=0). Pass the fallback color to our caller
// so it can use the solid color painting resource, if applyResource() on the URI resource failed.
fallbackColor = color;
return uriResource;
}
RenderSVGResource* RenderSVGResource::fillPaintingResource(RenderObject* object, const RenderStyle* style, Color& fallbackColor)
{
return requestPaintingResource(ApplyToFillMode, object, style, fallbackColor);
}
RenderSVGResource* RenderSVGResource::strokePaintingResource(RenderObject* object, const RenderStyle* style, Color& fallbackColor)
{
return requestPaintingResource(ApplyToStrokeMode, object, style, fallbackColor);
}
RenderSVGResourceSolidColor* RenderSVGResource::sharedSolidPaintingResource()
{
static RenderSVGResourceSolidColor* s_sharedSolidPaintingResource = 0;
if (!s_sharedSolidPaintingResource)
s_sharedSolidPaintingResource = new RenderSVGResourceSolidColor;
return s_sharedSolidPaintingResource;
}
void RenderSVGResource::markForLayoutAndParentResourceInvalidation(RenderObject* object, bool needsLayout)
{
ASSERT(object);
if (needsLayout)
object->setNeedsLayout(true);
// Invalidate resources in ancestor chain, if needed.
RenderObject* current = object->parent();
while (current) {
if (current->isSVGResourceContainer()) {
current->toRenderSVGResourceContainer()->removeAllClientsFromCache();
break;
}
current = current->parent();
}
}
}
#endif
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