/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* vim: set ts=8 sts=2 et sw=2 tw=80: */ /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
void nsPagePrintTimer::Disconnect() {
mPrintJob = nullptr;
mPrintObj = nullptr; if (mDocViewerPrint) { // This matches the IncrementDestroyBlockedCount call in the constructor.
mDocViewerPrint->DecrementDestroyBlockedCount();
mDocViewerPrint = nullptr;
}
}
nsresult nsPagePrintTimer::StartTimer(bool aUseDelay) {
uint32_t delay = 0; if (aUseDelay) { if (mFiringCount < 10) { // Longer delay for the few first pages.
delay = mDelay + ((10 - mFiringCount) * 100);
} else {
delay = mDelay;
}
} return NS_NewTimerWithCallback(getter_AddRefs(mTimer), this, delay,
nsITimer::TYPE_ONE_SHOT,
GetMainThreadSerialEventTarget());
}
nsresult nsPagePrintTimer::StartWatchDogTimer() { if (mWatchDogTimer) {
mWatchDogTimer->Cancel();
} // Instead of just doing one timer for a long period do multiple so we // can check if the user cancelled the printing. return NS_NewTimerWithCallback(getter_AddRefs(mWatchDogTimer), this,
WATCH_DOG_INTERVAL, nsITimer::TYPE_ONE_SHOT,
GetMainThreadSerialEventTarget());
}
// donePrinting will be true if it completed successfully or // if the printing was cancelled
donePrinting = !mPrintJob || mPrintJob->PrintSheet(mPrintObj); if (donePrinting) { if (mWaitingForRemotePrint || // If we are not waiting for the remote printing, it is the time to // end printing task by calling DonePrintingSheets.
(!mPrintJob || mPrintJob->DonePrintingSheets(mPrintObj, NS_OK))) {
initNewTimer = false;
mDone = true;
}
}
// Note that the Stop() destroys this after the print job finishes // (The nsPrintJob stops holding a reference when DonePrintingSheets // returns true.)
Stop(); if (initNewTimer) {
++mFiringCount;
nsresult result = StartTimer(/*aUseDelay*/ true); if (NS_FAILED(result)) {
mDone = true; // had a failure.. we are finished.. if (mPrintJob) {
mPrintJob->SetIsPrinting(false);
}
}
} return NS_OK;
}
// nsITimerCallback
NS_IMETHODIMP
nsPagePrintTimer::Notify(nsITimer* timer) { // When finished there may be still pending notifications, which we can just // ignore. if (mDone) { return NS_OK;
}
// There are four things that call Notify with different values for timer: // 1) the delay between sheets (timer == mTimer) // 2) canvasPrintState done (timer == null) // 3) the watch dog timer (timer == mWatchDogTimer) // 4) the waiting for remote print "timer" (timer == mWaitingForRemotePrint) if (!timer) { // Reset the counter since a mozPrintCallback has finished.
mWatchDogCount = 0;
} elseif (timer == mTimer) { // Reset the watchdog timer before the start of every sheet.
mWatchDogCount = 0;
mTimer = nullptr;
} elseif (timer == mWaitingForRemotePrint) {
mWaitingForRemotePrint = nullptr;
// If we are still waiting for the sheet delay timer, don't let the // notification from the remote print job trigger the next sheet. if (mTimer) { return NS_OK;
}
} elseif (timer == mWatchDogTimer) {
mWatchDogCount++;
PROFILER_MARKER_TEXT( "nsPagePrintTimer::Notify", LAYOUT_Printing, {},
nsPrintfCString("Watchdog Timer Count %d", mWatchDogCount));
if (mWatchDogCount > WATCH_DOG_MAX_COUNT) {
Fail(); return NS_OK;
}
}
bool donePrePrint = true; // Don't start to pre-print if we're waiting on the parent still. if (mPrintJob && !mWaitingForRemotePrint) {
donePrePrint = mPrintJob->PrePrintSheet();
}
if (donePrePrint && !mWaitingForRemotePrint) {
StopWatchDogTimer(); // Pass nullptr here since name already was set in constructor.
mDocument->Dispatch(do_AddRef(this));
} else { // Start the watch dog if we're waiting for preprint to ensure that if any // mozPrintCallbacks take to long we error out.
StartWatchDogTimer();
}
return NS_OK;
}
void nsPagePrintTimer::WaitForRemotePrint() {
mWaitingForRemotePrint = NS_NewTimer(); if (!mWaitingForRemotePrint) {
NS_WARNING("Failed to wait for remote print, we might time-out.");
}
}
void nsPagePrintTimer::RemotePrintFinished() { if (!mWaitingForRemotePrint) { return;
}
// now clean up print or print the next webshell if (mDone && mPrintJob) {
mDone = mPrintJob->DonePrintingSheets(mPrintObj, NS_OK);
}
Die Informationen auf dieser Webseite wurden
nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit,
noch Qualität der bereit gestellten Informationen zugesichert.
Bemerkung:
Die farbliche Syntaxdarstellung ist noch experimentell.
