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
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10 : * Software distributed under the License is distributed on an "AS IS" basis,
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12 : * for the specific language governing rights and limitations under the
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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.
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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"),
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36 : * ***** END LICENSE BLOCK ***** */
37 :
38 : #include "nsPagePrintTimer.h"
39 : #include "nsIContentViewer.h"
40 : #include "nsIServiceManager.h"
41 : #include "nsPrintEngine.h"
42 :
43 0 : NS_IMPL_ISUPPORTS1(nsPagePrintTimer, nsITimerCallback)
44 :
45 0 : nsPagePrintTimer::nsPagePrintTimer() :
46 : mPrintEngine(nsnull),
47 : mDelay(0),
48 : mFiringCount(0),
49 0 : mPrintObj(nsnull)
50 : {
51 0 : }
52 :
53 0 : nsPagePrintTimer::~nsPagePrintTimer()
54 : {
55 : // "Destroy" the document viewer; this normally doesn't actually
56 : // destroy it because of the IncrementDestroyRefCount call below
57 : // XXX This is messy; the document viewer should use a single approach
58 : // to keep itself alive during printing
59 0 : nsCOMPtr<nsIContentViewer> cv(do_QueryInterface(mDocViewerPrint));
60 0 : if (cv) {
61 0 : cv->Destroy();
62 : }
63 0 : }
64 :
65 : nsresult
66 0 : nsPagePrintTimer::StartTimer(bool aUseDelay)
67 : {
68 : nsresult result;
69 0 : mTimer = do_CreateInstance("@mozilla.org/timer;1", &result);
70 0 : if (NS_FAILED(result)) {
71 0 : NS_WARNING("unable to start the timer");
72 : } else {
73 0 : PRUint32 delay = 0;
74 0 : if (aUseDelay) {
75 0 : if (mFiringCount < 10) {
76 : // Longer delay for the few first pages.
77 0 : delay = mDelay + ((10 - mFiringCount) * 100);
78 : } else {
79 0 : delay = mDelay;
80 : }
81 : }
82 0 : mTimer->InitWithCallback(this, delay, nsITimer::TYPE_ONE_SHOT);
83 : }
84 0 : return result;
85 : }
86 :
87 :
88 :
89 : // nsITimerCallback
90 : NS_IMETHODIMP
91 0 : nsPagePrintTimer::Notify(nsITimer *timer)
92 : {
93 0 : if (mDocViewerPrint) {
94 0 : bool initNewTimer = true;
95 : // Check to see if we are done
96 : // inRange will be true if a page is actually printed
97 : bool inRange;
98 : // donePrinting will be true if it completed successfully or
99 : // if the printing was cancelled
100 0 : bool donePrinting = mPrintEngine->PrintPage(mPrintObj, inRange);
101 0 : if (donePrinting) {
102 : // now clean up print or print the next webshell
103 0 : if (mPrintEngine->DonePrintingPages(mPrintObj, NS_OK)) {
104 0 : initNewTimer = false;
105 : }
106 : }
107 :
108 : // Note that the Stop() destroys this after the print job finishes
109 : // (The PrintEngine stops holding a reference when DonePrintingPages
110 : // returns true.)
111 0 : Stop();
112 0 : if (initNewTimer) {
113 0 : ++mFiringCount;
114 0 : nsresult result = StartTimer(inRange);
115 0 : if (NS_FAILED(result)) {
116 0 : donePrinting = true; // had a failure.. we are finished..
117 0 : mPrintEngine->SetIsPrinting(false);
118 : }
119 : }
120 : }
121 0 : return NS_OK;
122 : }
123 :
124 : void
125 0 : nsPagePrintTimer::Init(nsPrintEngine* aPrintEngine,
126 : nsIDocumentViewerPrint* aDocViewerPrint,
127 : PRUint32 aDelay)
128 : {
129 0 : mPrintEngine = aPrintEngine;
130 0 : mDocViewerPrint = aDocViewerPrint;
131 0 : mDelay = aDelay;
132 :
133 0 : mDocViewerPrint->IncrementDestroyRefCount();
134 0 : }
135 :
136 : nsresult
137 0 : nsPagePrintTimer::Start(nsPrintObject* aPO)
138 : {
139 0 : mPrintObj = aPO;
140 0 : return StartTimer(false);
141 : }
142 :
143 :
144 : void
145 0 : nsPagePrintTimer::Stop()
146 : {
147 0 : if (mTimer) {
148 0 : mTimer->Cancel();
149 0 : mTimer = nsnull;
150 : }
151 0 : }
152 :
153 0 : nsresult NS_NewPagePrintTimer(nsPagePrintTimer **aResult)
154 : {
155 :
156 0 : NS_PRECONDITION(aResult, "null param");
157 :
158 0 : nsPagePrintTimer* result = new nsPagePrintTimer;
159 :
160 0 : if (!result) {
161 0 : *aResult = nsnull;
162 0 : return NS_ERROR_OUT_OF_MEMORY;
163 : }
164 :
165 0 : NS_ADDREF(result);
166 0 : *aResult = result;
167 :
168 0 : return NS_OK;
169 : }
170 :
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