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 "AndroidExtra.h"
  12 #include "XBMCApp.h"
  13
  14 #include <dlfcn.h>
  15
  16 #define IS_FROM_SOURCE(v, s) ((v & s) == s)
  17
  18 CEventLoop::CEventLoop(android_app* application)
  19   : m_enabled(false),
  20     m_application(application),
  21     m_activityHandler(NULL), m_inputHandler(NULL)
  22 {
  23   if (m_application == NULL)
  24     return;
  25
  26   m_application->userData = this;
  27   m_application->onAppCmd = activityCallback;
  28   m_application->onInputEvent = inputCallback;
  29 }
  30
  31 void CEventLoop::run(IActivityHandler &activityHandler, IInputHandler &inputHandler)
  32 {
  33   int ident;
  34   int events;
  35   struct android_poll_source* source;
  36
  37   m_activityHandler = &activityHandler;
  38   m_inputHandler = &inputHandler;
  39
  40   CXBMCApp::android_printf("CEventLoop: starting event loop");
  41   while (true)
  42   {
  43     // We will block forever waiting for events.
  44     while ((ident = ALooper_pollAll(-1, NULL, &events, (void**)&source)) >= 0)
  45     {
  46       // Process this event.
  47       if (source != NULL)
  48         source->process(m_application, source);
  49
  50       // Check if we are exiting.
  51       if (m_application->destroyRequested)
  52       {
  53         CXBMCApp::android_printf("CEventLoop: we are being destroyed");
  54         return;
  55       }
  56     }
  57   }
  58 }
  59
  60 void CEventLoop::processActivity(int32_t command)
  61 {
  62   switch (command)
  63   {
  64     case APP_CMD_CONFIG_CHANGED:
  65       m_activityHandler->onConfigurationChanged();
  66       break;
  67
  68     case APP_CMD_INIT_WINDOW:
  69       // The window is being shown, get it ready.
  70       m_activityHandler->onCreateWindow(m_application->window);
  71
  72       // set the proper DPI value
  73       m_inputHandler->setDPI(CXBMCApp::Get().GetDPI());
  74       break;
  75
  76     case APP_CMD_WINDOW_RESIZED:
  77       // The window has been resized
  78       m_activityHandler->onResizeWindow();
  79       break;
  80
  81     case APP_CMD_TERM_WINDOW:
  82       // The window is being hidden or closed, clean it up.
  83       m_activityHandler->onDestroyWindow();
  84       break;
  85
  86     case APP_CMD_GAINED_FOCUS:
  87       m_activityHandler->onGainFocus();
  88       break;
  89
  90     case APP_CMD_LOST_FOCUS:
  91       m_activityHandler->onLostFocus();
  92       break;
  93
  94     case APP_CMD_LOW_MEMORY:
  95       m_activityHandler->onLowMemory();
  96       break;
  97
  98     case APP_CMD_START:
  99       m_activityHandler->onStart();
 100       break;
 101
 102     case APP_CMD_RESUME:
 103       m_activityHandler->onResume();
 104       break;
 105
 106     case APP_CMD_SAVE_STATE:
 107       // The system has asked us to save our current state. Do so.
 108       m_activityHandler->onSaveState(&m_application->savedState, &m_application->savedStateSize);
 109       break;
 110
 111     case APP_CMD_PAUSE:
 112       m_activityHandler->onPause();
 113       break;
 114
 115     case APP_CMD_STOP:
 116       m_activityHandler->onStop();
 117       break;
 118
 119     case APP_CMD_DESTROY:
 120       m_activityHandler->onDestroy();
 121       break;
 122
 123     default:
 124       break;
 125   }
 126 }
 127
 128 int32_t CEventLoop::processInput(AInputEvent* event)
 129 {
 130   int32_t rtn    = 0;
 131   int32_t type   = AInputEvent_getType(event);
 132   int32_t source = AInputEvent_getSource(event);
 133
 134   // handle joystick input
 135   if (IS_FROM_SOURCE(source, AINPUT_SOURCE_GAMEPAD) || IS_FROM_SOURCE(source, AINPUT_SOURCE_JOYSTICK))
 136   {
 137     if (m_inputHandler->onJoyStickEvent(event))
 138       return true;
 139   }
 140
 141   switch(type)
 142   {
 143     case AINPUT_EVENT_TYPE_KEY:
 144       rtn = m_inputHandler->onKeyboardEvent(event);
 145       break;
 146     case AINPUT_EVENT_TYPE_MOTION:
 147       if (IS_FROM_SOURCE(source, AINPUT_SOURCE_TOUCHSCREEN))
 148         rtn = m_inputHandler->onTouchEvent(event);
 149       else if (IS_FROM_SOURCE(source, AINPUT_SOURCE_MOUSE))
 150         rtn = m_inputHandler->onMouseEvent(event);
 151       break;
 152   }
 153
 154   return rtn;
 155 }
 156
 157 void CEventLoop::activityCallback(android_app* application, int32_t command)
 158 {
 159   if (application == NULL || application->userData == NULL)
 160     return;
 161
 162   CEventLoop& eventLoop = *((CEventLoop*)application->userData);
 163   eventLoop.processActivity(command);
 164 }
 165
 166 int32_t CEventLoop::inputCallback(android_app* application, AInputEvent* event)
 167 {
 168   if (application == NULL || application->userData == NULL || event == NULL)
 169     return 0;
 170
 171   CEventLoop& eventLoop = *((CEventLoop*)application->userData);
 172
 173   return eventLoop.processInput(event);
 174 }
 175