widget/qt/nsAppShell.cpp

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /* vim:expandtab:shiftwidth=4:tabstop=4:
   3  */
   4 /* This Source Code Form is subject to the terms of the Mozilla Public
   5  * License, v. 2.0. If a copy of the MPL was not distributed with this
   6  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   7
   8 #include "nsAppShell.h"
   9 #include <qapplication.h>
  10 #include <unistd.h>
  11 #include <fcntl.h>
  12 #include <errno.h>
  13
  14 #include <qabstracteventdispatcher.h>
  15 #include <qthread.h>
  16
  17 #include "prenv.h"
  18 #include "nsQAppInstance.h"
  19
  20 #ifdef MOZ_LOGGING
  21 #define FORCE_PR_LOG
  22 #include "prlog.h"
  23 #endif
  24
  25 #ifdef PR_LOGGING
  26 PRLogModuleInfo *gWidgetLog = nullptr;
  27 PRLogModuleInfo *gWidgetFocusLog = nullptr;
  28 PRLogModuleInfo *gWidgetIMLog = nullptr;
  29 PRLogModuleInfo *gWidgetDrawLog = nullptr;
  30 #endif
  31
  32 static int sPokeEvent;
  33
  34 nsAppShell::~nsAppShell()
  35 {
  36     nsQAppInstance::Release();
  37 }
  38
  39 nsresult
  40 nsAppShell::Init()
  41 {
  42 #ifdef PR_LOGGING
  43     if (!gWidgetLog)
  44         gWidgetLog = PR_NewLogModule("Widget");
  45     if (!gWidgetFocusLog)
  46         gWidgetFocusLog = PR_NewLogModule("WidgetFocus");
  47     if (!gWidgetIMLog)
  48         gWidgetIMLog = PR_NewLogModule("WidgetIM");
  49     if (!gWidgetDrawLog)
  50         gWidgetDrawLog = PR_NewLogModule("WidgetDraw");
  51 #endif
  52 #if (QT_VERSION >= QT_VERSION_CHECK(4, 4, 0))
  53     sPokeEvent = QEvent::registerEventType();
  54 #else
  55     sPokeEvent = QEvent::User+5000;
  56 #endif
  57
  58     nsQAppInstance::AddRef();
  59
  60     return nsBaseAppShell::Init();
  61 }
  62
  63 void
  64 nsAppShell::ScheduleNativeEventCallback()
  65 {
  66     QCoreApplication::postEvent(this,
  67                                 new QEvent((QEvent::Type) sPokeEvent));
  68 }
  69
  70
  71 bool
  72 nsAppShell::ProcessNextNativeEvent(bool mayWait)
  73 {
  74     QEventLoop::ProcessEventsFlags flags = QEventLoop::AllEvents;
  75
  76     if (mayWait)
  77         flags |= QEventLoop::WaitForMoreEvents;
  78
  79     QAbstractEventDispatcher *dispatcher =  QAbstractEventDispatcher::instance(QThread::currentThread());
  80     if (!dispatcher)
  81         return false;
  82
  83     return dispatcher->processEvents(flags) ? true : false;
  84 }
  85
  86 bool
  87 nsAppShell::event (QEvent *e)
  88 {
  89     if (e->type() == sPokeEvent) {
  90         NativeEventCallback();
  91         return true;
  92     }
  93
  94     return false;
  95 }