layout/generic/nsIPageSequenceFrame.h

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* ***** BEGIN LICENSE BLOCK *****
   3  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   4  *
   5  * The contents of this file are subject to the Mozilla Public License Version
   6  * 1.1 (the "License"); you may not use this file except in compliance with
   7  * the License. You may obtain a copy of the License at
   8  * http://www.mozilla.org/MPL/
   9  *
  10  * Software distributed under the License is distributed on an "AS IS" basis,
  11  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  12  * for the specific language governing rights and limitations under the
  13  * License.
  14  *
  15  * The Original Code is mozilla.org code.
  16  *
  17  * The Initial Developer of the Original Code is
  18  * Netscape Communications Corporation.
  19  * Portions created by the Initial Developer are Copyright (C) 1998
  20  * the Initial Developer. All Rights Reserved.
  21  *
  22  * Contributor(s):
  23  *
  24  * Alternatively, the contents of this file may be used under the terms of
  25  * either of the GNU General Public License Version 2 or later (the "GPL"),
  26  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  27  * in which case the provisions of the GPL or the LGPL are applicable instead
  28  * of those above. If you wish to allow use of your version of this file only
  29  * under the terms of either the GPL or the LGPL, and not to allow others to
  30  * use your version of this file under the terms of the MPL, indicate your
  31  * decision by deleting the provisions above and replace them with the notice
  32  * and other provisions required by the GPL or the LGPL. If you do not delete
  33  * the provisions above, a recipient may use your version of this file under
  34  * the terms of any one of the MPL, the GPL or the LGPL.
  35  *
  36  * ***** END LICENSE BLOCK ***** */
  37 #ifndef nsIPageSequenceFrame_h___
  38 #define nsIPageSequenceFrame_h___
  39
  40 #include "nsISupports.h"
  41 #include "nsRect.h"
  42
  43 class nsPresContext;
  44 class nsIPrintSettings;
  45
  46 // IID for the nsIPageSequenceFrame interface
  47 // a6cf90d2-15b3-11d2-932e-00805f8add32
  48 #define NS_IPAGESEQUENCEFRAME_IID \
  49  { 0xa6cf90d2, 0x15b3, 0x11d2,{0x93, 0x2e, 0x00, 0x80, 0x5f, 0x8a, 0xdd, 0x32}}
  50
  51 //----------------------------------------------------------------------
  52
  53 /**
  54  * Interface for accessing special capabilities of the page sequence frame.
  55  *
  56  * Today all that exists are member functions for printing.
  57  */
  58 class nsIPageSequenceFrame : public nsISupports {
  59 public:
  60   NS_DECLARE_STATIC_IID_ACCESSOR(NS_IPAGESEQUENCEFRAME_IID)
  61
  62   /**
  63    * Print the set of pages.
  64    *
  65    * @param   aPrintOptions options for printing
  66    * @param   aStatusCallback interface that the client provides to receive
  67    *            progress notifications. Can be NULL
  68    * @return  NS_OK if successful
  69    *          NS_ERROR_ABORT if the client cancels printing using the callback
  70    *            interface
  71    *          NS_ERROR_INVALID_ARG if printing a range of pages (not all pages)
  72    *            and the start page is greater than the total number of pages
  73    *          NS_ERROR_FAILURE if there is an error
  74    */
  75   NS_IMETHOD StartPrint(nsPresContext*  aPresContext,
  76                         nsIPrintSettings* aPrintOptions,
  77                         PRUnichar* aDocTitle,
  78                         PRUnichar* aDocURL) = 0;
  79   NS_IMETHOD PrintNextPage() = 0;
  80   NS_IMETHOD GetCurrentPageNum(PRInt32* aPageNum) = 0;
  81   NS_IMETHOD GetNumPages(PRInt32* aNumPages) = 0;
  82   NS_IMETHOD IsDoingPrintRange(PRBool* aDoing) = 0;
  83   NS_IMETHOD GetPrintRange(PRInt32* aFromPage, PRInt32* aToPage) = 0;
  84
  85   NS_IMETHOD DoPageEnd() = 0;
  86   NS_IMETHOD SetSelectionHeight(nscoord aYOffset, nscoord aHeight) = 0;
  87
  88   NS_IMETHOD SetTotalNumPages(PRInt32 aTotal) = 0;
  89
  90   // Gets the dead space (the gray area) around the Print Preview Page
  91   NS_IMETHOD GetDeadSpaceValue(nscoord* aValue) = 0;
  92
  93   // For Shrink To Fit
  94   NS_IMETHOD GetSTFPercent(float& aSTFPercent) = 0;
  95
  96 private:
  97   NS_IMETHOD_(nsrefcnt) AddRef(void) = 0;
  98   NS_IMETHOD_(nsrefcnt) Release(void) = 0;
  99 };
 100
 101 NS_DEFINE_STATIC_IID_ACCESSOR(nsIPageSequenceFrame, NS_IPAGESEQUENCEFRAME_IID)
 102
 103 #endif /* nsIPageSequenceFrame_h___ */
 104
 105