xbmc/platform/android/activity/EventLoop.cpp

   1 /*
   2  *  Copyright (C) 2012-2018 Team Kodi
   3  *  This file is part of Kodi - https://kodi.tv
   4  *
   5  *  SPDX-License-Identifier: GPL-2.0-or-later
   6  *  See LICENSES/README.md for more information.
   7  */
   8
   9 #include "EventLoop.h"
  10
  11 #include "XBMCApp.h"
  12
  13 #define IS_FROM_SOURCE(v, s) ((v & s) == s)
  14
  15 CEventLoop::CEventLoop(android_app* application)
  16   : m_application(application), m_activityHandler(NULL), m_inputHandler(NULL)
  17 {
  18   if (m_application == NULL)
  19     return;
  20
  21   m_application->userData = this;
  22   m_application->onAppCmd = activityCallback;
  23   m_application->onInputEvent = inputCallback;
  24 }
  25
  26 void CEventLoop::run(IActivityHandler& activityHandler, IInputHandler& inputHandler)
  27 {
  28   m_activityHandler = &activityHandler;
  29   m_inputHandler = &inputHandler;
  30
  31   CXBMCApp::android_printf("CEventLoop: starting event loop");
  32
  33   while (!m_application->destroyRequested)
  34   {
  35     android_poll_source* source = nullptr;
  36     int result = ALooper_pollOnce(-1, nullptr, nullptr, reinterpret_cast<void**>(&source));
  37
  38     if (result == ALOOPER_POLL_ERROR)
  39     {
  40       CXBMCApp::android_printf("CEventLoop: ALooper_pollOnce returned an error");
  41       break;
  42     }
  43
  44     // Process this event.
  45     if (source != nullptr)
  46       source->process(m_application, source);
  47   }
  48
  49   CXBMCApp::android_printf("CEventLoop: we are being destroyed");
  50 }
  51
  52 void CEventLoop::processActivity(int32_t command)
  53 {
  54   switch (command)
  55   {
  56     case APP_CMD_CONFIG_CHANGED:
  57       m_activityHandler->onConfigurationChanged();
  58       break;
  59
  60     case APP_CMD_INIT_WINDOW:
  61       // The window is being shown, get it ready.
  62       m_activityHandler->onCreateWindow(m_application->window);
  63
  64       // set the proper DPI value
  65       m_inputHandler->setDPI(CXBMCApp::Get().GetDPI());
  66       break;
  67
  68     case APP_CMD_WINDOW_RESIZED:
  69       // The window has been resized
  70       m_activityHandler->onResizeWindow();
  71       break;
  72
  73     case APP_CMD_TERM_WINDOW:
  74       // The window is being hidden or closed, clean it up.
  75       m_activityHandler->onDestroyWindow();
  76       break;
  77
  78     case APP_CMD_GAINED_FOCUS:
  79       m_activityHandler->onGainFocus();
  80       break;
  81
  82     case APP_CMD_LOST_FOCUS:
  83       m_activityHandler->onLostFocus();
  84       break;
  85
  86     case APP_CMD_LOW_MEMORY:
  87       m_activityHandler->onLowMemory();
  88       break;
  89
  90     case APP_CMD_START:
  91       m_activityHandler->onStart();
  92       break;
  93
  94     case APP_CMD_RESUME:
  95       m_activityHandler->onResume();
  96       break;
  97
  98     case APP_CMD_SAVE_STATE:
  99       // The system has asked us to save our current state. Do so.
 100       m_activityHandler->onSaveState(&m_application->savedState, &m_application->savedStateSize);
 101       break;
 102
 103     case APP_CMD_PAUSE:
 104       m_activityHandler->onPause();
 105       break;
 106
 107     case APP_CMD_STOP:
 108       m_activityHandler->onStop();
 109       break;
 110
 111     case APP_CMD_DESTROY:
 112       m_activityHandler->onDestroy();
 113       break;
 114
 115     default:
 116       break;
 117   }
 118 }
 119
 120 int32_t CEventLoop::processInput(AInputEvent* event)
 121 {
 122   int32_t rtn    = 0;
 123   int32_t type   = AInputEvent_getType(event);
 124   int32_t source = AInputEvent_getSource(event);
 125
 126   // handle joystick input
 127   if (IS_FROM_SOURCE(source, AINPUT_SOURCE_GAMEPAD) || IS_FROM_SOURCE(source, AINPUT_SOURCE_JOYSTICK))
 128   {
 129     if (m_inputHandler->onJoyStickEvent(event))
 130       return true;
 131   }
 132
 133   switch(type)
 134   {
 135     case AINPUT_EVENT_TYPE_KEY:
 136       rtn = m_inputHandler->onKeyboardEvent(event);
 137       break;
 138     case AINPUT_EVENT_TYPE_MOTION:
 139       if (IS_FROM_SOURCE(source, AINPUT_SOURCE_TOUCHSCREEN))
 140         rtn = m_inputHandler->onTouchEvent(event);
 141       else if (IS_FROM_SOURCE(source, AINPUT_SOURCE_MOUSE))
 142         rtn = m_inputHandler->onMouseEvent(event);
 143       break;
 144   }
 145
 146   return rtn;
 147 }
 148
 149 void CEventLoop::activityCallback(android_app* application, int32_t command)
 150 {
 151   if (application == NULL || application->userData == NULL)
 152     return;
 153
 154   CEventLoop& eventLoop = *((CEventLoop*)application->userData);
 155   eventLoop.processActivity(command);
 156 }
 157
 158 int32_t CEventLoop::inputCallback(android_app* application, AInputEvent* event)
 159 {
 160   if (application == NULL || application->userData == NULL || event == NULL)
 161     return 0;
 162
 163   CEventLoop& eventLoop = *((CEventLoop*)application->userData);
 164
 165   return eventLoop.processInput(event);
 166 }
 167