Introduce SVGPaintServer

Source/core/rendering/svg/RenderSVGResourceGradient.cpp

 /*
  * Copyright (C) 2006 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2008 Eric Seidel <eric@webkit.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"
-
 #include "core/rendering/svg/RenderSVGResourceGradient.h"
 
-#include "core/rendering/svg/RenderSVGShape.h"
-#include "core/rendering/svg/SVGRenderSupport.h"
-#include "platform/graphics/GraphicsContext.h"
+#include "core/paint/SVGPaintServer.h"
 
 namespace blink {
 
 RenderSVGResourceGradient::RenderSVGResourceGradient(SVGGradientElement* node)
     : RenderSVGResourceContainer(node)
     , m_shouldCollectGradientAttributes(true)
 {
 }
 
 void RenderSVGResourceGradient::removeAllClientsFromCache(bool markForInvalidation)
 {
     m_gradientMap.clear();
     m_shouldCollectGradientAttributes = true;
     markAllClientsForInvalidation(markForInvalidation ? PaintInvalidation : ParentOnlyInvalidation);
 }
 
 void RenderSVGResourceGradient::removeClientFromCache(RenderObject* client, bool markForInvalidation)
 {
     ASSERT(client);
     m_gradientMap.remove(client);
     markClientForInvalidation(client, markForInvalidation ? PaintInvalidation : ParentOnlyInvalidation);
 }
 
-bool RenderSVGResourceGradient::applyResource(RenderObject* object, RenderStyle* style, GraphicsContext* context, RenderSVGResourceModeFlags resourceMode)
+bool RenderSVGResourceGradient::preparePaintServer(RenderObject* object, RenderStyle* style, RenderSVGResourceModeFlags resourceMode, SVGPaintServer& paintServer)
 {
     ASSERT(object);
     ASSERT(style);
-    ASSERT(context);
 
     clearInvalidationMask();
 
     // Be sure to synchronize all SVG properties on the gradientElement _before_ processing any further.
     // Otherwhise the call to collectGradientAttributes() in createTileImage(), may cause the SVG DOM property
     // synchronization to kick in, which causes removeAllClientsFromCache() to be called, which in turn deletes our
     // GradientData object! Leaving out the line below will cause svg/dynamic-updates/SVG*GradientElement-svgdom* to crash.
     SVGGradientElement* gradientElement = toSVGGradientElement(element());
     if (!gradientElement)
         return false;
@@ skipping 33 matching lines @@
     }
 
     if (!gradientData->gradient)
         return false;
 
     const SVGRenderStyle& svgStyle = style->svgStyle();
 
     AffineTransform computedGradientSpaceTransform = computeResourceSpaceTransform(object, gradientData->userspaceTransform, svgStyle, resourceMode);
     gradientData->gradient->setGradientSpaceTransform(computedGradientSpaceTransform);
 
-    // Draw gradient
-    context->save();
-
-    if (resourceMode & ApplyToFillMode)
-        context->setFillGradient(gradientData->gradient);
-    else if (resourceMode & ApplyToStrokeMode)
-        context->setStrokeGradient(gradientData->gradient);
-
-    updateGraphicsContext(context, style, *object, resourceMode);
+    paintServer.setGradient(gradientData->gradient);
     return true;
 }
 
-void RenderSVGResourceGradient::postApplyResource(GraphicsContext* context)
-{
-    ASSERT(context);
-    context->restore();
-}
-
 void RenderSVGResourceGradient::addStops(GradientData* gradientData, const Vector<Gradient::ColorStop>& stops) const
 {
     ASSERT(gradientData->gradient);
 
     const Vector<Gradient::ColorStop>::const_iterator end = stops.end();
     for (Vector<Gradient::ColorStop>::const_iterator it = stops.begin(); it != end; ++it)
         gradientData->gradient->addColorStop(*it);
 }
 
 GradientSpreadMethod RenderSVGResourceGradient::platformSpreadMethodFromSVGType(SVGSpreadMethodType method) const
 {
     switch (method) {
     case SVGSpreadMethodUnknown:
     case SVGSpreadMethodPad:
         return SpreadMethodPad;
     case SVGSpreadMethodReflect:
         return SpreadMethodReflect;
     case SVGSpreadMethodRepeat:
         return SpreadMethodRepeat;
     }
 
     ASSERT_NOT_REACHED();
     return SpreadMethodPad;
 }
 
 }