2 * Copyright (c) 2023 Samsung Electronics Co., Ltd.
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4 * Licensed under the Apache License, Version 2.0 (the "License");
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5 * you may not use this file except in compliance with the License.
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6 * You may obtain a copy of the License at
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8 * http://www.apache.org/licenses/LICENSE-2.0
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10 * Unless required by applicable law or agreed to in writing, software
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11 * distributed under the License is distributed on an "AS IS" BASIS,
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12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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13 * See the License for the specific language governing permissions and
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14 * limitations under the License.
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19 #include <dali/internal/system/windows/callback-manager-win.h>
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21 // EXTERNAL INCLUDES
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22 #include <Windows.h>
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24 // Need to undef the following constants as they are defined in one of the headers in Windows.h but used in DALi (via debug.h)
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25 #undef TRANSPARENT // Used in constants.h
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26 #undef CopyMemory // Used in dali-vector.h
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28 #include <dali/integration-api/debug.h>
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30 // INTERNAL INCLUDES
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31 #include <dali/internal/window-system/windows/platform-implement-win.h>
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40 * Structure contains the callback function and control options
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42 struct WindowsCallbackData
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47 WindowsCallbackData(CallbackBase* callback, bool hasReturnValue)
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48 : mCallback(callback),
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49 mHasReturnValue(hasReturnValue)
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55 ~WindowsCallbackData()
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60 CallbackBase* mCallback; ///< call back
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61 bool mHasReturnValue; ///< true if the callback function has a return value.
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64 WinCallbackManager::WinCallbackManager()
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67 mSelfCallback = MakeCallback(this, &WinCallbackManager::ProcessIdleFromFramework);
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70 WinCallbackManager::~WinCallbackManager()
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72 delete mSelfCallback;
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75 void WinCallbackManager::Start()
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77 DALI_ASSERT_DEBUG(mRunning == false);
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81 void WinCallbackManager::Stop()
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83 // make sure we're not called twice
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84 DALI_ASSERT_DEBUG(mRunning == true);
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86 ClearIdleCallbacks();
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91 bool WinCallbackManager::AddIdleCallback(CallbackBase* callback, bool hasReturnValue)
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98 WindowsCallbackData* callbackData = new WindowsCallbackData(callback, hasReturnValue);
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100 mCallbackContainer.push_back(callbackData);
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102 if(!mSelfCallbackRegistered)
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104 // Post only one times.
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105 mSelfCallbackRegistered = true;
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106 WindowsPlatform::PostWinThreadMessage(WIN_CALLBACK_EVENT, reinterpret_cast<uint64_t>(mSelfCallback), 0);
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112 void WinCallbackManager::RemoveIdleCallback(CallbackBase* callback)
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114 for(auto iter = mCallbackContainer.begin(), endIter = mCallbackContainer.end(); iter != endIter; ++iter)
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116 auto* callbackData = *iter;
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118 if(callbackData->mCallback == callback)
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121 delete callbackData;
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123 // Set stored value as nullptr. It will be removed from container after ProcessIdle()
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131 bool WinCallbackManager::ProcessIdle()
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133 mSelfCallbackRegistered = false;
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135 const bool idleProcessed = !mCallbackContainer.empty();
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137 for(auto iter = mCallbackContainer.begin(); iter != mCallbackContainer.end();)
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139 auto* callbackData = *iter;
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140 bool removed = true;
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143 if(callbackData->mHasReturnValue)
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145 const bool retValue = Dali::CallbackBase::ExecuteReturn<bool>(*(callbackData->mCallback));
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147 // Do not remove callback if return value is true.
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148 removed = !retValue;
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152 Dali::CallbackBase::Execute(*(callbackData->mCallback));
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159 iter = mCallbackContainer.erase(iter);
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167 // Re-register WIN_CALLBACK_EVENT when some idle callback remained.
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168 if(!mCallbackContainer.empty())
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170 if(!mSelfCallbackRegistered)
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172 // Post only one times.
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173 mSelfCallbackRegistered = true;
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174 WindowsPlatform::PostWinThreadMessage(WIN_CALLBACK_EVENT, reinterpret_cast<uint64_t>(mSelfCallback), 0);
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178 return idleProcessed;
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181 void WinCallbackManager::ClearIdleCallbacks()
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183 for(auto iter = mCallbackContainer.begin(), endIter = mCallbackContainer.end(); iter != endIter; ++iter)
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185 auto* callbackData = *iter;
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186 delete callbackData;
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188 mCallbackContainer.clear();
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191 bool WinCallbackManager::AddIdleEntererCallback(CallbackBase* callback)
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193 return AddIdleCallback(callback, true);
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196 void WinCallbackManager::RemoveIdleEntererCallback(CallbackBase* callback)
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198 RemoveIdleCallback(callback);
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201 void WinCallbackManager::ProcessIdleFromFramework()
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206 } // namespace Adaptor
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208 } // namespace Internal
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210 } // namespace Dali
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