gecko-dev/layout/generic/nsIPageSequenceFrame.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: NPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Netscape 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
* http://www.mozilla.org/NPL/
*
* 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 mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either 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 NPL, 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 NPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef nsIPageSequenceFrame_h___
#define nsIPageSequenceFrame_h___
#include "nsISupports.h"
#include "nsRect.h"
class nsIPresContext;
class nsIPrintSettings;
// IID for the nsIPageSequenceFrame interface
// a6cf90d2-15b3-11d2-932e-00805f8add32
#define NS_IPAGESEQUENCEFRAME_IID \
{ 0xa6cf90d2, 0x15b3, 0x11d2,{0x93, 0x2e, 0x00, 0x80, 0x5f, 0x8a, 0xdd, 0x32}}
// IID for the nsIPrintStatusCallback interface
// a6cf90d3-15b3-11d2-932e-00805f8add32
#define NS_IPRINTSTATUSCALLBACK_IID \
{ 0xa6cf90d3, 0x15b3, 0x11d2,{0x93, 0x2e, 0x00, 0x80, 0x5f, 0x8a, 0xdd, 0x32}}
//----------------------------------------------------------------------
/**
* List of status codes that provide additional information about the
* progress of the print operation.
* @see nsIPrintStatusCallback#OnProgress()
*/
enum nsPrintStatus {
ePrintStatus_StartPage, // beginning the specified page
ePrintStatus_EndPage // finished with the specified page
};
/**
* List of print error codes.
* @see nsIPrintStatusCallback##OnError()
*/
enum nsPrintError {
ePrintError_Error, // unspecified error
ePrintError_Abort, // operation was aborted by the user
ePrintError_OutOfDisk, // system is out of disk space
ePrintError_OutOfMemory // system is out of memory
};
/**
* The page sequence frame provides information on the print operation by
* calling notification methods on the client's nsIPrintStatusCallback
* interface.
*/
class nsIPrintStatusCallback : public nsISupports {
public:
NS_DEFINE_STATIC_IID_ACCESSOR(NS_IPRINTSTATUSCALLBACK_IID)
/**
* Indicates the current progress of the print operation.
*
* @param aPageNumber the number of the current page
* @param aTotalPages the total number of pages
* @param aStatusCode additional information regarding the progress
* @param aContinuePrinting return PR_TRUE to continue printing and
* PR_FALSE to cancel the printing operation
*/
NS_IMETHOD OnProgress(PRInt32 aPageNumber,
PRInt32 aTotalPages,
nsPrintStatus aStatusCode,
PRBool& aContinuePrinting) = 0;
/**
* Notification that an error has occured.
*/
NS_IMETHOD OnError(nsPrintError aErrorCode) = 0;
};
//----------------------------------------------------------------------
/**
* Interface for accessing special capabilities of the page sequence frame.
*
* Today all that exists are member functions for printing.
*/
class nsIPageSequenceFrame : public nsISupports {
public:
NS_DEFINE_STATIC_IID_ACCESSOR(NS_IPAGESEQUENCEFRAME_IID)
/**
* Print the set of pages.
*
* @param aPrintOptions options for printing
* @param aStatusCallback interface that the client provides to receive
* progress notifications. Can be NULL
* @return NS_OK if successful
* NS_ERROR_ABORT if the client cancels printing using the callback
* interface
* NS_ERROR_INVALID_ARG if printing a range of pages (not all pages)
* and the start page is greater than the total number of pages
* NS_ERROR_FAILURE if there is an error
* @see nsIPrintStatusCallback#OnProgress()
*/
NS_IMETHOD StartPrint(nsIPresContext* aPresContext,
nsIPrintSettings* aPrintOptions,
PRUnichar* aDocTitle,
PRUnichar* aDocURL) = 0;
NS_IMETHOD PrintNextPage(nsIPresContext* aPresContext) = 0;
NS_IMETHOD GetCurrentPageNum(PRInt32* aPageNum) = 0;
NS_IMETHOD GetNumPages(PRInt32* aNumPages) = 0;
NS_IMETHOD IsDoingPrintRange(PRBool* aDoing) = 0;
NS_IMETHOD GetPrintRange(PRInt32* aFromPage, PRInt32* aToPage) = 0;
NS_IMETHOD SkipPageBegin() = 0;
NS_IMETHOD SkipPageEnd() = 0;
NS_IMETHOD DoPageEnd(nsIPresContext* aPresContext) = 0;
NS_IMETHOD GetPrintThisPage(PRBool* aPrintThisPage) = 0;
NS_IMETHOD SetOffset(nscoord aX, nscoord aY) = 0;
NS_IMETHOD SuppressHeadersAndFooters(PRBool aDoSup) = 0;
NS_IMETHOD SetClipRect(nsIPresContext* aPresContext, nsRect* aSize) = 0;
NS_IMETHOD SetSelectionHeight(nscoord aYOffset, nscoord aHeight) = 0;
NS_IMETHOD SetTotalNumPages(PRInt32 aTotal) = 0;
// Gets the dead space (the gray area) around the Print Preview Page
NS_IMETHOD GetDeadSpaceValue(nscoord* aValue) = 0;
private:
NS_IMETHOD_(nsrefcnt) AddRef(void) = 0;
NS_IMETHOD_(nsrefcnt) Release(void) = 0;
};
#endif /* nsIPageSequenceFrame_h___ */