1 #ifndef __DALI_APPLICATION_H__
2 #define __DALI_APPLICATION_H__
5 * Copyright (c) 2018 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>
28 #include <dali/public-api/adaptor-framework/application-configuration.h>
29 #include <dali/public-api/adaptor-framework/device-status.h>
30 #include <dali/public-api/adaptor-framework/window.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 initializing 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_ADAPTOR_API Application : public BaseHandle
111 typedef Signal< void (DeviceStatus::Battery::Status) > LowBatterySignalType; ///< Application device signal type @SINCE_1_2.62
112 typedef Signal< void (DeviceStatus::Memory::Status) > LowMemorySignalType; ///< Application device signal type @SINCE_1_2.62
113 typedef Signal< void (Application&) > AppSignalType; ///< Application lifecycle signal and system signal callback type @SINCE_1_0.0
114 typedef Signal< void (Application&, void *) > AppControlSignalType; ///< Application control signal callback type @SINCE_1_0.0
117 * @brief Enumeration for deciding whether a Dali application window is opaque or transparent.
122 OPAQUE = 0, ///< The window will be opaque @SINCE_1_0.0
123 TRANSPARENT = 1 ///< The window transparency will match the alpha value set in Dali::Stage::SetBackgroundcolor() @SINCE_1_0.0
129 * @brief This is the constructor for applications without an argument list.
133 * @return A handle to the Application
135 static Application New();
138 * @brief This is the constructor for applications.
143 * @param[in,out] argc A pointer to the number of arguments
144 * @param[in,out] argv A pointer to the argument list
145 * @return A handle to the Application
147 static Application New( int* argc, char **argv[] );
150 * @brief This is the constructor for applications with a name.
155 * @param[in,out] argc A pointer to the number of arguments
156 * @param[in,out] argv A pointer to the argument list
157 * @param[in] stylesheet The path to user defined theme file
158 * @return A handle to the Application
159 * @note If the stylesheet is not specified, then the library's default stylesheet will not be overridden.
161 static Application New( int* argc, char **argv[], const std::string& stylesheet );
164 * @brief This is the constructor for applications with a name.
169 * @param[in,out] argc A pointer to the number of arguments
170 * @param[in,out] argv A pointer to the argument list
171 * @param[in] stylesheet The path to user defined theme file
172 * @param[in] windowMode A member of WINDOW_MODE
173 * @return A handle to the Application
174 * @note If the stylesheet is not specified, then the library's default stylesheet will not be overridden.
176 static Application New( int* argc, char **argv[], const std::string& stylesheet, WINDOW_MODE windowMode );
179 * @brief This is the constructor for applications.
184 * @param[in,out] argc A pointer to the number of arguments
185 * @param[in,out] argv A pointer to the argument list
186 * @param[in] stylesheet The path to user defined theme file
187 * @param[in] windowMode A member of WINDOW_MODE
188 * @param[in] positionSize A position and a size of the window
189 * @return A handle to the Application
190 * @note If the stylesheet is not specified, then the library's default stylesheet will not be overridden.
192 static Application New( int* argc, char **argv[], const std::string& stylesheet, Application::WINDOW_MODE windowMode, PositionSize positionSize );
195 * @brief Constructs an empty handle.
201 * @brief Copy Constructor.
203 * @param[in] application Handle to an object
205 Application( const Application& application );
208 * @brief Assignment operator.
210 * @param[in] application Handle to an object
211 * @return A reference to this
213 Application& operator=( const Application& application );
218 * This is non-virtual since derived Handle types must not contain data or virtual methods.
225 * @brief This starts the application.
227 * Choosing this form of main loop indicates that the default
228 * application configuration of APPLICATION_HANDLES_CONTEXT_LOSS is used. On platforms where
229 * context loss can occur, the application is responsible for tearing down and re-loading UI.
230 * The application should listen to Stage::ContextLostSignal and Stage::ContextRegainedSignal.
236 * @brief This starts the application, and allows the app to choose a different configuration.
238 * If the application plans on using the ReplaceSurface or ReplaceWindow API, then this will
239 * trigger context loss & regain.
240 * The application should listen to Stage::ContextLostSignal and Stage::ContextRegainedSignal.
242 * @param[in] configuration The context loss configuration
244 void MainLoop(Configuration::ContextLoss configuration);
247 * @brief This lowers the application to bottom without actually quitting it.
253 * @brief This quits the application. Tizen applications should use Lower to improve re-start performance unless they need to Quit completely.
259 * @brief Ensures that the function passed in is called from the main loop when it is idle.
261 * @param[in] callback The function to call
262 * @return @c true if added successfully, @c false otherwise
264 * @note Function must be called from main event thread only
266 * A callback of the following type may be used:
270 * This callback will be deleted once it is called.
272 * @note Ownership of the callback is passed onto this class.
274 bool AddIdle( CallbackBase* callback );
277 * @brief Retrieves the window used by the Application class.
279 * The application writer can use the window to change indicator and orientation
282 * @return A handle to the window
287 * @brief Replaces the current window.
289 * This will force context loss.
290 * If you plan on using this API in your application, then you should configure
291 * it to prevent discard behavior when handling the Init signal.
293 * @param[in] windowPosition The position and size parameters of the new window
294 * @param[in] name The name of the new window
296 void ReplaceWindow(PositionSize windowPosition, const std::string& name);
299 * @brief Get path application resources are stored at
302 * @return the full path of the resources
304 static std::string GetResourcePath();
307 * @brief This is used to get region information from device.
310 * @return Region information
312 std::string GetRegion() const;
315 * @brief This is used to get language information from device.
318 * @return Language information
320 std::string GetLanguage() const;
322 public: // Stereoscopy
325 * @brief Sets the viewing mode for the application.
327 * @param[in] viewMode The new viewing mode
329 void SetViewMode( ViewMode viewMode );
332 * @brief Gets the current viewing mode.
334 * @return The current viewing mode
336 ViewMode GetViewMode() const;
339 * @brief Sets the stereo base (eye separation) for Stereoscopic 3D.
341 * The stereo base is the distance in millimetres between the eyes. Typical values are
342 * between 50mm and 70mm. The default value is 65mm.
344 * @param[in] stereoBase The stereo base (eye separation) for Stereoscopic 3D
346 void SetStereoBase( float stereoBase );
349 * @brief Gets the stereo base (eye separation) for Stereoscopic 3D.
352 * @return The stereo base (eye separation) for Stereoscopic 3D
354 float GetStereoBase() const;
359 * @brief The user should connect to this signal to determine when they should initialize
362 * @return The signal to connect to
364 AppSignalType& InitSignal();
367 * @brief The user should connect to this signal to determine when they should terminate
370 * @return The signal to connect to
372 AppSignalType& TerminateSignal();
375 * @brief The user should connect to this signal if they need to perform any special
376 * activities when the application is about to be paused.
378 * @return The signal to connect to
380 AppSignalType& PauseSignal();
383 * @brief The user should connect to this signal if they need to perform any special
384 * activities when the application has resumed.
386 * @return The signal to connect to
388 AppSignalType& ResumeSignal();
391 * @brief This signal is sent when the system requires the user to reinitialize itself.
393 * @return The signal to connect to
395 AppSignalType& ResetSignal();
398 * @DEPRECATED_1_1.43 Use Window::ResizedSignal() instead.
399 * @brief This signal is emitted when the window application rendering on is resized.
401 * @return The signal to connect to
403 AppSignalType& ResizeSignal() DALI_DEPRECATED_API;
406 * @brief This signal is emitted when another application sends a launch request to the application.
408 * When the application is launched, this signal is emitted after the main loop of the application starts up.
409 * The passed parameter describes the launch request and contains the information about why the application is launched.
411 * @return The signal to connect to
413 AppControlSignalType& AppControlSignal();
416 * @brief This signal is emitted when the language is changed on the device.
418 * @return The signal to connect to
420 AppSignalType& LanguageChangedSignal();
423 * @brief This signal is emitted when the region of the device is changed.
425 * @return The signal to connect to
427 AppSignalType& RegionChangedSignal();
430 * @DEPRECATED_1_2.62 Use LowBatterySignal() instead.
431 * @brief This signal is emitted when the battery level of the device is low.
433 * @return The signal to connect to
435 AppSignalType& BatteryLowSignal() DALI_DEPRECATED_API;
438 * @DEPRECATED_1_2.62 Use LowMemorySignal() instead.
439 * @brief This signal is emitted when the memory level of the device is low.
441 * @return The signal to connect to
443 AppSignalType& MemoryLowSignal() DALI_DEPRECATED_API;
446 * @brief This signal is emitted when the battery level of the device is low.
448 * @return The signal to connect to
450 LowBatterySignalType& LowBatterySignal();
453 * @brief This signal is emitted when the memory level of the device is low.
455 * @return The signal to connect to
457 LowMemorySignalType& LowMemorySignal();
459 public: // Not intended for application developers
462 * @brief Internal constructor.
465 explicit DALI_INTERNAL Application(Internal::Adaptor::Application* application);
474 #endif // __DALI_APPLICATION_H__