layout/svg/nsSVGFilterPaintCallback.h

   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 #ifndef __NS_SVGFILTERPAINTCALLBACK_H__
   7 #define __NS_SVGFILTERPAINTCALLBACK_H__
   8
   9 class nsIFrame;
  10 class nsRenderingContext;
  11
  12 struct nsIntRect;
  13
  14 class nsSVGFilterPaintCallback {
  15 public:
  16   /**
  17    * Paint the frame contents.
  18    * SVG frames will have had matrix propagation set to false already.
  19    * Non-SVG frames have to do their own thing.
  20    * The caller will do a Save()/Restore() as necessary so feel free
  21    * to mess with context state.
  22    * The context will be configured to use the "user space" coordinate
  23    * system.
  24    * @param aDirtyRect the dirty rect *in user space pixels*
  25    * @param aTransformRoot the outermost frame whose transform should be taken
  26    *                       into account when painting an SVG glyph
  27    */
  28   virtual void Paint(nsRenderingContext *aContext, nsIFrame *aTarget,
  29                      const nsIntRect *aDirtyRect,
  30                      nsIFrame* aTransformRoot) = 0;
  31 };
  32
  33 #endif