1 #ifndef __DALI_ADAPTOR_H__
2 #define __DALI_ADAPTOR_H__
5 * Copyright (c) 2014 Samsung Electronics Co., Ltd.
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
22 #include <dali/public-api/signals/callback.h>
23 #include <dali/public-api/signals/dali-signal.h>
24 #include <dali/public-api/math/rect.h>
25 #include <dali/public-api/events/touch-event.h>
29 #include "application-configuration.h"
30 #include "tts-player.h"
32 namespace Dali DALI_INTERNAL
38 namespace Internal DALI_INTERNAL
47 * @brief An Adaptor object is used to initialize and control how Dali runs.
49 * It provides a lifecycle interface that allows the application
50 * writer to provide their own main loop and other platform related
53 * The Adaptor class provides a means for initialising the resources required by the Dali::Core.
55 * When dealing with platform events, the application writer MUST ensure that Dali is called in a
58 * As soon as the Adaptor class is created and started, the application writer can initialise their
59 * Dali::Actor objects straight away or as required by the main loop they intend to use (there is no
60 * need to wait for an initialise signal as per the Dali::Application class).
62 * The Adaptor does emit a Resize signal which informs the user when the surface is resized.
63 * Tizen and Linux Adaptors should follow the example below:
66 * void CreateProgram(DaliAdaptor& adaptor)
68 * // Create Dali components...
69 * // Can instantiate adaptor here instead, if required
74 * // Initialise platform
77 * // Create an 800 by 1280 window positioned at (0,0).
78 * Dali::PositionSize positionSize(0, 0, 800, 1280);
79 * Dali::Window window = Dali::Window::New( positionSize, "My Application" );
81 * // Create an adaptor which uses that window for rendering
82 * Dali::Adaptor adaptor = Dali::Adaptor::New( window );
85 * CreateProgram(adaptor);
86 * // Or use this as a callback function depending on the platform initialisation sequence.
88 * // Start Main Loop of your platform
89 * MyPlatform.StartMainLoop();
95 * If required, you can also connect class member functions to a signal:
98 * MyApplication application;
99 * adaptor.ResizedSignal().Connect(&application, &MyApplication::Resize);
108 typedef Signal< void (Adaptor&) > AdaptorSignalType; ///< Generic Type for adaptor signals
112 * @brief Create a new adaptor using the window.
114 * @param[in] window The window to draw onto
115 * @note The default base layout DeviceLayout::DEFAULT_BASE_LAYOUT will be used.
116 * @return a reference to the adaptor handle
118 static Adaptor& New( Window window );
121 * @brief Create a new adaptor using the window.
123 * @param[in] window The window to draw onto
124 * @param[in] baseLayout The base layout that the application has been written for
125 * @param[in] configuration The context loss configuration.
126 * @return a reference to the adaptor handle
128 static Adaptor& New( Window window, const DeviceLayout& baseLayout, Configuration::ContextLoss configuration );
131 * @brief Virtual Destructor.
138 * @brief Starts the Adaptor.
143 * @brief Pauses the Adaptor.
148 * @brief Resumes the Adaptor, if previously paused.
150 * @note If the adaptor is not paused, this does not do anything.
155 * @brief Stops the Adaptor.
160 * @brief Ensures that the function passed in is called from the main loop when it is idle.
162 * A callback of the following type may be used:
167 * @param[in] callBack The function to call.
168 * @return true if added successfully, false otherwise
170 * @note Ownership of the callback is passed onto this class.
172 bool AddIdle( CallbackBase* callback );
175 * @brief Get the render surface the adaptor is using to render to.
177 * @return reference to current render surface
179 RenderSurface& GetSurface();
182 * @brief Release any locks the surface may hold.
184 * For example, after compositing an offscreen surface, use this method to allow
185 * rendering to continue.
187 void ReleaseSurfaceLock();
190 * @brief Set the number of frames per render.
192 * This enables an application to deliberately render with a reduced FPS.
193 * @param[in] numberOfVSyncsPerRender The number of vsyncs between successive renders.
194 * Suggest this is a power of two:
195 * 1 - render each vsync frame
196 * 2 - render every other vsync frame
197 * 4 - render every fourth vsync frame
198 * 8 - render every eighth vsync frame
200 void SetRenderRefreshRate( unsigned int numberOfVSyncsPerRender );
203 * @brief Set whether the frame count per render is managed using the hardware VSync or
206 * @param[in] useHardware True if the hardware VSync should be used
208 void SetUseHardwareVSync(bool useHardware);
211 * @brief Returns a reference to the instance of the adaptor used by the current thread.
213 * @return A reference to the adaptor.
214 * @pre The adaptor has been initialised.
215 * @note This is only valid in the main thread.
217 static Adaptor& Get();
220 * @brief Checks whether the adaptor is available.
222 * @return true, if it is available, false otherwise.
224 static bool IsAvailable();
227 * @brief Call this method to notify Dali when the system language changes.
229 * Use this only when NOT using Dali::Application, As Application created using
230 * Dali::Application will automatically receive notification of language change.
231 * When Dali::Application is not used, the application developer should
232 * use app-core to receive language change notifications and should update Dali
233 * by calling this method.
235 void NotifyLanguageChanged();
238 * @brief Sets minimum distance in pixels that the fingers must move towards/away from each other in order to
239 * trigger a pinch gesture
241 * @param[in] distance The minimum pinch distance in pixels
243 void SetMinimumPinchDistance(float distance);
248 * @brief The user should connect to this signal if they need to perform any
249 * special activities when the surface Dali is being rendered on is resized.
251 * @return The signal to connect to
253 AdaptorSignalType& ResizedSignal();
256 * @brief This signal is emitted when the language is changed on the device.
258 * @return The signal to connect to
260 AdaptorSignalType& LanguageChangedSignal();
265 Adaptor(const Adaptor&);
266 Adaptor& operator=(Adaptor&);
271 * @brief Create an uninitialized Adaptor.
275 Internal::Adaptor::Adaptor* mImpl; ///< Implementation object
276 friend class Internal::Adaptor::Adaptor;
281 #endif // __DALI_ADAPTOR_H__