author Brian Birtles <>
Sun, 25 Sep 2011 22:04:32 +0100
changeset 77557 c9a9397f6db3e27cff0cf5ba8ed1fa4c3b9d85c2
parent 69099 23430875e8618270202e44fe79aef56365a0e751
child 77799 e7854b4d29ba905ae3994f821b160c989bac4260
permissions -rw-r--r--
Bug 602759 part 13 - Update layout to use new matrix and transform types; r=jwatt

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 * The Original Code is the Mozilla SVG project.
 * The Initial Developer of the Original Code is
 * Crocodile Clips Ltd..
 * Portions created by the Initial Developer are Copyright (C) 2002
 * the Initial Developer. All Rights Reserved.
 * Contributor(s):
 *   Alex Fritze <> (original author)
 * Alternatively, the contents of this file may be used under the terms of
 * either of the GNU General Public License Version 2 or later (the "GPL"),
 * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 * ***** END LICENSE BLOCK ***** */


#include "nsSVGTextContainerFrame.h"
#include "gfxRect.h"
#include "gfxMatrix.h"

typedef nsSVGTextContainerFrame nsSVGTextFrameBase;

class nsSVGTextFrame : public nsSVGTextFrameBase
  friend nsIFrame*
  NS_NewSVGTextFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
  nsSVGTextFrame(nsStyleContext* aContext)
    : nsSVGTextFrameBase(aContext),
      mPositioningDirty(PR_TRUE) {}


  // nsIFrame:
#ifdef DEBUG
  NS_IMETHOD Init(nsIContent*      aContent,
                  nsIFrame*        aParent,
                  nsIFrame*        aPrevInFlow);

  NS_IMETHOD  AttributeChanged(PRInt32         aNameSpaceID,
                               nsIAtom*        aAttribute,
                               PRInt32         aModType);

   * Get the "type" of the frame
   * @see nsGkAtoms::svgTextFrame
  virtual nsIAtom* GetType() const;

#ifdef DEBUG
  NS_IMETHOD GetFrameName(nsAString& aResult) const
    return MakeFrameName(NS_LITERAL_STRING("SVGText"), aResult);

  // nsISVGChildFrame interface:
  virtual void NotifySVGChanged(PRUint32 aFlags);
  NS_IMETHOD NotifyRedrawSuspended();
  NS_IMETHOD NotifyRedrawUnsuspended();
  // Override these four to ensure that UpdateGlyphPositioning is called
  // to bring glyph positions up to date
  NS_IMETHOD PaintSVG(nsSVGRenderState* aContext,
                      const nsIntRect *aDirtyRect);
  NS_IMETHOD_(nsIFrame*) GetFrameForPoint(const nsPoint & aPoint);
  NS_IMETHOD UpdateCoveredRegion();
  NS_IMETHOD InitialUpdate();
  virtual gfxRect GetBBoxContribution(const gfxMatrix &aToBBoxUserspace);
  // nsSVGContainerFrame methods:
  virtual gfxMatrix GetCanvasTM();
  // nsSVGTextContainerFrame methods:
  virtual PRUint32 GetNumberOfChars();
  virtual float GetComputedTextLength();
  virtual float GetSubStringLength(PRUint32 charnum, PRUint32 nchars);
  virtual PRInt32 GetCharNumAtPosition(nsIDOMSVGPoint *point);

  NS_IMETHOD GetStartPositionOfChar(PRUint32 charnum, nsIDOMSVGPoint **_retval);
  NS_IMETHOD GetEndPositionOfChar(PRUint32 charnum, nsIDOMSVGPoint **_retval);
  NS_IMETHOD GetExtentOfChar(PRUint32 charnum, nsIDOMSVGRect **_retval);
  NS_IMETHOD GetRotationOfChar(PRUint32 charnum, float *_retval);

  // nsSVGTextFrame
  void NotifyGlyphMetricsChange();

   * @param aForceGlobalTransform passed down to nsSVGGlyphFrames to
   * control whether they should use the global transform even when
  void UpdateGlyphPositioning(PRBool aForceGlobalTransform);

  void SetWhitespaceHandling(nsSVGGlyphFrame *aFrame);

  nsAutoPtr<gfxMatrix> mCanvasTM;

  enum UpdateState { unsuspended, suspended };
  UpdateState mMetricsState;

  PRPackedBool mPositioningDirty;