author stuart
Sat, 19 Apr 2008 19:07:24 +0300
changeset 16874 89a5cfa2fb9c6e9ce871d13615e71ae72e6439c8
parent 7671 652167adb6941da76728f787b61d1c701741f286
child 27975 813b27ed116baab986dfc1f2efde74d2da8fd856
permissions -rw-r--r--
adding synthetic italic support

/** -*- 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 code.
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 2001
 * the Initial Developer. All Rights Reserved.
 * Contributor(s):
 *   Stuart Parmenter <>
 *   Chris Saari <>
 * 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 "nsISupports.idl"
#include "gfxtypes.idl"
#include "gfxIFormats.idl"

#include "nsRect.h"

native nsRectRef(nsIntRect &);

 * gfxIImageFrame interface
 * All x, y, width, height values are in pixels.
 * @author Tim Rowley <>
 * @author Stuart Parmenter <>
 * @version 0.1
[scriptable, uuid(9c37930b-cadd-453c-89e1-9ed456715b9c)]
interface gfxIImageFrame : nsISupports
   * Create a new \a aWidth x \a aHeight sized image.
   * @param aX The x-offset from the origin of the gfxIImageContainer parent.
   * @param aY The y-offset from the origin of the gfxIImageContainer parent.
   * @param aWidth The width of the image to create.
   * @param aHeight The height of the image to create.
   * @param aFormat the width of the image to create.
   * @note The data in a new image is uninitialized.
  void init(in PRInt32 aX,
            in PRInt32 aY,
            in PRInt32 aWidth,
            in PRInt32 aHeight,
            in gfx_format aFormat,
            in gfx_depth aDepth);

   * TRUE by default.  When set to FALSE, you will no longer be able to make any modifications
   * to the data of the image.  Any attempts will fail.
  attribute boolean mutable;

   * The x-offset of the image.
  readonly attribute PRInt32 x;

   * The y-offset of the image.
  readonly attribute PRInt32 y;

   * The width of the image.
  readonly attribute PRInt32 width;

   * The height of the image.
  readonly attribute PRInt32 height;

   * The rectangle this frame ocupies.
   * @param rect this is really an out parameter.
  [noscript] void getRect(in nsRectRef rect);

   * The image data format the image was created with.
   * @see gfxIFormats
  readonly attribute gfx_format format;

   * returns whether the image requires the background to be painted
  readonly attribute boolean needsBackground;

  /* data accessors */
  readonly attribute unsigned long imageBytesPerRow;

   * returns the number of bytes allocated for the image
  readonly attribute unsigned long imageDataLength;

  // XXX do we copy here?  lets not...
  void getImageData([array, size_is(length)] out PRUint8 bits, out unsigned long length);

   * Get Palette data pointer
  void getPaletteData([array, size_is(length)] out gfx_color palette, out unsigned long length);

   * Lock image pixels before addressing the data directly
  void lockImageData();

   * Unlock image pixels
  void unlockImageData();

  /* GIF Specific methods.  These should be in a different class or interface. */

   * Represents the number of milliseconds until the next frame should be displayed.
   * @note -1 means that this frame should be displayed forever.
  attribute long timeout;

  /* frame disposal method, used only by GIFs. Should probably subclass image frame
   * and image container for GIFs special needs, but for simplicity it is here for the
   * moment
  attribute long frameDisposalMethod;

  /* PNG specific methods */

  attribute long blendMethod;