1 #ifndef __DALI_APPLICATION_H__
2 #define __DALI_APPLICATION_H__
5 * Copyright (c) 2015 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.
23 #include <dali/public-api/common/view-mode.h>
24 #include <dali/public-api/object/base-handle.h>
25 #include <dali/public-api/signals/callback.h>
29 #include "application-configuration.h"
35 * @addtogroup dali_adaptor_framework
39 namespace Internal DALI_INTERNAL
47 * @brief An Application class object should be created by every application
48 * that wishes to use Dali.
50 * It provides a means for initialising the
51 * resources required by the Dali::Core.
53 * The Application class emits several signals which the user can
54 * connect to. The user should not create any Dali objects in the main
55 * function and instead should connect to the Init signal of the
56 * Application and create the Dali objects in the connected callback.
58 * Applications should follow the example below:
61 * class ExampleController: public ConnectionTracker
64 * ExampleController( Application& application )
65 * : mApplication( application )
67 * mApplication.InitSignal().Connect( this, &ExampleController::Create );
70 * void Create( Application& application )
72 * // Create Dali components...
76 * Application& mApplication;
79 * int main (int argc, char **argv)
81 * Application app = Application::New(&argc, &argv);
82 * ExampleController example( app );
87 * If required, you can also connect class member functions to a signal:
91 * app.ResumeSignal().Connect(&app, &MyApplication::Resume);
94 * This class accepts command line arguments as well. The following options are supported:
97 * --no-vsync Disable VSync on Render
98 * -w|--width Stage Width
99 * -h|--height Stage Height
100 * -d|--dpi Emulated DPI
104 * When the above options are found, they are stripped from argv, and argc is updated appropriately.
107 class DALI_IMPORT_API Application : public BaseHandle
111 typedef Signal< void (Application&) > AppSignalType; ///< Application lifecycle signal and system signal callback type @SINCE_1_0.0
112 typedef Signal< void (Application&, void *) > AppControlSignalType; ///< Application control signal callback type @SINCE_1_0.0
115 * @brief Decides whether a Dali application window is opaque or transparent.
120 OPAQUE = 0, ///< The window will be opaque @SINCE_1_0.0
121 TRANSPARENT = 1 ///< The window transparency will match the alpha value set in Dali::Stage::SetBackgroundcolor() @SINCE_1_0.0
127 * @brief This is the constructor for applications without an argument list.
132 static Application New();
135 * @brief This is the constructor for applications.
140 * @param[in,out] argc A pointer to the number of arguments
141 * @param[in,out] argv A pointer the the argument list
143 static Application New( int* argc, char **argv[] );
146 * @brief This is the constructor for applications with a name
151 * @param[in,out] argc A pointer to the number of arguments
152 * @param[in,out] argv A pointer the the argument list
153 * @param[in] stylesheet The path to user defined theme file
154 * @note If the stylesheet is not specified, then the library's default stylesheet will not be overridden.
156 static Application New( int* argc, char **argv[], const std::string& stylesheet );
159 * @brief This is the constructor for applications with a name
164 * @param[in,out] argc A pointer to the number of arguments
165 * @param[in,out] argv A pointer the the argument list
166 * @param[in] stylesheet The path to user defined theme file
167 * @param[in] windowMode A member of WINDOW_MODE
168 * @note If the stylesheet is not specified, then the library's default stylesheet will not be overridden.
170 static Application New( int* argc, char **argv[], const std::string& stylesheet, WINDOW_MODE windowMode );
173 * @brief Construct an empty handle
179 * @brief Copy Constructor
182 Application( const Application& application );
185 * @brief Assignment operator
188 Application& operator=( const Application& applicaton );
193 * This is non-virtual since derived Handle types must not contain data or virtual methods.
200 * @brief This starts the application.
202 * Choosing this form of main loop indicates that the default
203 * application configuration of APPLICATION_HANDLES_CONTEXT_LOSS is used. On platforms where
204 * context loss can occur, the application is responsible for tearing down and re-loading UI.
205 * The application should listen to Stage::ContextLostSignal and Stage::ContextRegainedSignal.
211 * @brief This starts the application, and allows the app to choose a different configuration.
213 * If the application plans on using the ReplaceSurface or ReplaceWindow API, then this will
214 * trigger context loss & regain.
215 * The application should listen to Stage::ContextLostSignal and Stage::ContextRegainedSignal.
218 void MainLoop(Configuration::ContextLoss configuration);
221 * @brief This lowers the application to bottom without actually quitting it
227 * @brief This quits the application. Tizen applications should use Lower to improve re-start performance unless they need to Quit completely.
233 * @brief Ensures that the function passed in is called from the main loop when it is idle.
235 * @param[in] callback The function to call.
236 * @return true if added successfully, false otherwise
238 * @note Function must be called from main event thread only
240 * A callback of the following type may be used:
245 * @note Ownership of the callback is passed onto this class.
247 bool AddIdle( CallbackBase* callback );
250 * @brief Retrieves the window used by the Application class.
252 * The application writer can use the window to change indicator and orientation
255 * @return A handle to the window
260 * @brief Replace the current window.
262 * This will force context loss.
263 * If you plan on using this API in your application, then you should configure
264 * it to prevent discard behaviour when handling the Init signal.
266 * @param[in] windowPosition The position and size parameters of the new window
267 * @param[in] name The name of the new window
269 void ReplaceWindow(PositionSize windowPosition, const std::string& name);
271 public: // Stereoscopy
274 * @brief Set the viewing mode for the application.
276 * @param[in] viewMode The new viewing mode.
278 void SetViewMode( ViewMode viewMode );
281 * @brief Get the current viewing mode.
283 * @return The current viewing mode.
285 ViewMode GetViewMode() const;
288 * @brief Set the stereo base (eye separation) for Stereoscopic 3D
290 * The stereo base is the distance in millimetres between the eyes. Typical values are
291 * between 50mm and 70mm. The default value is 65mm.
293 * @remarks SetStereoBase() is supported in mobile applications only.
294 * @param[in] stereoBase The stereo base (eye separation) for Stereoscopic 3D
296 void SetStereoBase( float stereoBase );
299 * @brief Get the stereo base (eye separation) for Stereoscopic 3D
302 * @remarks GetStereoBase() is supported in mobile applications only.
303 * @return The stereo base (eye separation) for Stereoscopic 3D
305 float GetStereoBase() const;
310 * @brief The user should connect to this signal to determine when they should initialise
314 AppSignalType& InitSignal();
317 * @brief The user should connect to this signal to determine when they should terminate
321 AppSignalType& TerminateSignal();
324 * @brief The user should connect to this signal if they need to perform any special
325 * activities when the application is about to be paused.
328 AppSignalType& PauseSignal();
331 * @brief The user should connect to this signal if they need to perform any special
332 * activities when the application has resumed.
335 AppSignalType& ResumeSignal();
338 * @brief This signal is sent when the system requires the user to reinitialise itself.
341 AppSignalType& ResetSignal();
344 * @brief This signal is emitted when the window the application is rendering on is resized.
347 AppSignalType& ResizeSignal();
350 * @brief This signal is emitted when another application sends a launch request to the application.
352 * When the application is launched, this signal is emitted after the main loop of the application starts up.
353 * The passed parameter describes the launch request and contains the information about why the application is launched.
356 AppControlSignalType& AppControlSignal();
359 * @brief This signal is emitted when the language is changed on the device.
362 AppSignalType& LanguageChangedSignal();
365 * @brief This signal is emitted when the region of the device is changed.
368 AppSignalType& RegionChangedSignal();
371 * @brief This signal is emitted when the battery level of the device is low.
374 AppSignalType& BatteryLowSignal();
377 * @brief This signal is emitted when the memory level of the device is low.
380 AppSignalType& MemoryLowSignal();
382 public: // Not intended for application developers
385 * @brief Internal constructor
388 explicit DALI_INTERNAL Application(Internal::Adaptor::Application* application);
396 #endif // __DALI_APPLICATION_H__