layout/svg/SVGFEUnstyledLeafFrame.cpp

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 // Keep in (case-insensitive) order:
   7 #include "nsFrame.h"
   8 #include "nsGkAtoms.h"
   9 #include "nsSVGEffects.h"
  10 #include "nsSVGFilters.h"
  11
  12 typedef nsFrame SVGFEUnstyledLeafFrameBase;
  13
  14 class SVGFEUnstyledLeafFrame : public SVGFEUnstyledLeafFrameBase
  15 {
  16   friend nsIFrame*
  17   NS_NewSVGFEUnstyledLeafFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
  18 protected:
  19   explicit SVGFEUnstyledLeafFrame(nsStyleContext* aContext)
  20     : SVGFEUnstyledLeafFrameBase(aContext)
  21   {
  22     AddStateBits(NS_FRAME_SVG_LAYOUT | NS_FRAME_IS_NONDISPLAY);
  23   }
  24
  25 public:
  26   NS_DECL_FRAMEARENA_HELPERS
  27
  28   virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
  29                               const nsRect&           aDirtyRect,
  30                               const nsDisplayListSet& aLists) MOZ_OVERRIDE {}
  31
  32   virtual bool IsFrameOfType(uint32_t aFlags) const MOZ_OVERRIDE
  33   {
  34     return SVGFEUnstyledLeafFrameBase::IsFrameOfType(aFlags & ~(nsIFrame::eSVG));
  35   }
  36
  37 #ifdef DEBUG_FRAME_DUMP
  38   virtual nsresult GetFrameName(nsAString& aResult) const MOZ_OVERRIDE
  39   {
  40     return MakeFrameName(NS_LITERAL_STRING("SVGFEUnstyledLeaf"), aResult);
  41   }
  42 #endif
  43
  44   /**
  45    * Get the "type" of the frame
  46    *
  47    * @see nsGkAtoms::svgFEUnstyledLeafFrame
  48    */
  49   virtual nsIAtom* GetType() const MOZ_OVERRIDE;
  50
  51   virtual nsresult AttributeChanged(int32_t  aNameSpaceID,
  52                                     nsIAtom* aAttribute,
  53                                     int32_t  aModType) MOZ_OVERRIDE;
  54
  55   virtual bool UpdateOverflow() MOZ_OVERRIDE {
  56     // We don't maintain a visual overflow rect
  57     return false;
  58   }
  59 };
  60
  61 nsIFrame*
  62 NS_NewSVGFEUnstyledLeafFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
  63 {
  64   return new (aPresShell) SVGFEUnstyledLeafFrame(aContext);
  65 }
  66
  67 NS_IMPL_FRAMEARENA_HELPERS(SVGFEUnstyledLeafFrame)
  68
  69 nsIAtom *
  70 SVGFEUnstyledLeafFrame::GetType() const
  71 {
  72   return nsGkAtoms::svgFEUnstyledLeafFrame;
  73 }
  74
  75 nsresult
  76 SVGFEUnstyledLeafFrame::AttributeChanged(int32_t  aNameSpaceID,
  77                                          nsIAtom* aAttribute,
  78                                          int32_t  aModType)
  79 {
  80   SVGFEUnstyledElement *element = static_cast<SVGFEUnstyledElement*>(mContent);
  81   if (element->AttributeAffectsRendering(aNameSpaceID, aAttribute)) {
  82     nsSVGEffects::InvalidateRenderingObservers(this);
  83   }
  84
  85   return SVGFEUnstyledLeafFrameBase::AttributeChanged(aNameSpaceID,
  86                                                         aAttribute, aModType);
  87 }