1 #ifndef __DALI_INTEGRATION_ADAPTOR_H__
2 #define __DALI_INTEGRATION_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"
46 * @brief An Adaptor object is used to initialize and control how Dali runs.
48 * It provides a lifecycle interface that allows the application
49 * writer to provide their own main loop and other platform related
52 * The Adaptor class provides a means for initialising the resources required by the Dali::Core.
54 * When dealing with platform events, the application writer MUST ensure that Dali is called in a
57 * As soon as the Adaptor class is created and started, the application writer can initialise their
58 * Dali::Actor objects straight away or as required by the main loop they intend to use (there is no
59 * need to wait for an initialise signal as per the Dali::Application class).
61 * The Adaptor does emit a Resize signal which informs the user when the surface is resized.
62 * Tizen and Linux Adaptors should follow the example below:
65 * void CreateProgram(DaliAdaptor& adaptor)
67 * // Create Dali components...
68 * // Can instantiate adaptor here instead, if required
73 * // Initialise platform
76 * // Create an 800 by 1280 window positioned at (0,0).
77 * Dali::PositionSize positionSize(0, 0, 800, 1280);
78 * Dali::Window window = Dali::Window::New( positionSize, "My Application" );
80 * // Create an adaptor which uses that window for rendering
81 * Dali::Adaptor adaptor = Dali::Adaptor::New( window );
84 * CreateProgram(adaptor);
85 * // Or use this as a callback function depending on the platform initialisation sequence.
87 * // Start Main Loop of your platform
88 * MyPlatform.StartMainLoop();
94 * If required, you can also connect class member functions to a signal:
97 * MyApplication application;
98 * adaptor.ResizedSignal().Connect(&application, &MyApplication::Resize);
103 class DALI_IMPORT_API Adaptor
107 typedef Signal< void (Adaptor&) > AdaptorSignalType; ///< Generic Type for adaptor signals
111 * @brief Create a new adaptor using the window.
113 * @param[in] window The window to draw onto
114 * @note The default base layout DeviceLayout::DEFAULT_BASE_LAYOUT will be used.
115 * @return a reference to the adaptor handle
117 static Adaptor& New( Window window );
120 * @brief Create a new adaptor using the window.
122 * @param[in] window The window to draw onto
123 * @param[in] baseLayout The base layout that the application has been written for
124 * @param[in] configuration The context loss configuration.
125 * @return a reference to the adaptor handle
127 static Adaptor& New( Window window, const DeviceLayout& baseLayout, Configuration::ContextLoss configuration );
130 * @brief Create a new adaptor using render surface.
132 * @param[in] nativeWindow native window handle
133 * @param[in] surface The surface to draw onto
134 * @note The default base layout DeviceLayout::DEFAULT_BASE_LAYOUT will be used.
135 * @return a reference to the adaptor handle
137 static Adaptor& New( Any nativeWindow, const Dali::RenderSurface& surface );
140 * @brief Create a new adaptor using render surface.
142 * @param[in] nativeWindow native window handle
143 * @param[in] surface The surface to draw onto
144 * @param[in] baseLayout The base layout that the application has been written for
145 * @param[in] configuration The context loss configuration.
146 * @return a reference to the adaptor handle
148 static Adaptor& New( Any nativeWindow, const Dali::RenderSurface& surface, const DeviceLayout& baseLayout, Configuration::ContextLoss configuration = Configuration::APPLICATION_DOES_NOT_HANDLE_CONTEXT_LOSS);
151 * @brief Virtual Destructor.
158 * @brief Starts the Adaptor.
163 * @brief Pauses the Adaptor.
168 * @brief Resumes the Adaptor, if previously paused.
170 * @note If the adaptor is not paused, this does not do anything.
175 * @brief Stops the Adaptor.
180 * @brief Ensures that the function passed in is called from the main loop when it is idle.
182 * A callback of the following type may be used:
187 * @param[in] callback The function to call.
188 * @return true if added successfully, false otherwise
190 * @note Ownership of the callback is passed onto this class.
192 bool AddIdle( CallbackBase* callback );
195 * @brief Replaces the rendering surface
197 * @param[in] nativeWindow native window handle
198 * @param[in] surface to use
200 void ReplaceSurface( Any nativeWindow, Dali::RenderSurface& surface );
203 * @brief Get the render surface the adaptor is using to render to.
205 * @return reference to current render surface
207 RenderSurface& GetSurface();
210 * @brief Release any locks the surface may hold.
212 * For example, after compositing an offscreen surface, use this method to allow
213 * rendering to continue.
215 void ReleaseSurfaceLock();
218 * @brief Set the number of frames per render.
220 * This enables an application to deliberately render with a reduced FPS.
221 * @param[in] numberOfVSyncsPerRender The number of vsyncs between successive renders.
222 * Suggest this is a power of two:
223 * 1 - render each vsync frame
224 * 2 - render every other vsync frame
225 * 4 - render every fourth vsync frame
226 * 8 - render every eighth vsync frame
228 void SetRenderRefreshRate( unsigned int numberOfVSyncsPerRender );
231 * @brief Set whether the frame count per render is managed using the hardware VSync or
234 * @param[in] useHardware True if the hardware VSync should be used
236 void SetUseHardwareVSync(bool useHardware);
239 * @brief Returns a reference to the instance of the adaptor used by the current thread.
241 * @return A reference to the adaptor.
242 * @pre The adaptor has been initialised.
243 * @note This is only valid in the main thread.
245 static Adaptor& Get();
248 * @brief Checks whether the adaptor is available.
250 * @return true, if it is available, false otherwise.
252 static bool IsAvailable();
255 * @brief Call this method to notify Dali when the system language changes.
257 * Use this only when NOT using Dali::Application, As Application created using
258 * Dali::Application will automatically receive notification of language change.
259 * When Dali::Application is not used, the application developer should
260 * use app-core to receive language change notifications and should update Dali
261 * by calling this method.
263 void NotifyLanguageChanged();
266 * @brief Sets minimum distance in pixels that the fingers must move towards/away from each other in order to
267 * trigger a pinch gesture
269 * @param[in] distance The minimum pinch distance in pixels
271 void SetMinimumPinchDistance(float distance);
274 * @brief Feed a touch point to the adaptor.
276 * @param[in] point touch point
277 * @param[in] timeStamp time value of event
279 void FeedTouchPoint( TouchPoint& point, int timeStamp );
282 * @brief Feed a mouse wheel event to the adaptor.
284 * @param[in] wheelEvent mouse wheel event
286 void FeedWheelEvent( MouseWheelEvent& wheelEvent );
289 * @brief Feed a key event to the adaptor.
291 * @param[in] keyEvent The key event holding the key information.
293 void FeedKeyEvent( KeyEvent& keyEvent );
298 * @brief The user should connect to this signal if they need to perform any
299 * special activities when the surface Dali is being rendered on is resized.
301 * @return The signal to connect to
303 AdaptorSignalType& ResizedSignal();
306 * @brief This signal is emitted when the language is changed on the device.
308 * @return The signal to connect to
310 AdaptorSignalType& LanguageChangedSignal();
315 Adaptor(const Adaptor&);
316 Adaptor& operator=(Adaptor&);
321 * @brief Create an uninitialized Adaptor.
325 Internal::Adaptor::Adaptor* mImpl; ///< Implementation object
326 friend class Internal::Adaptor::Adaptor;
331 #endif // __DALI_INTEGRATION_ADAPTOR_H__