1 #ifndef DALI_INTERNAL_EVENT_HANDLER_H
2 #define DALI_INTERNAL_EVENT_HANDLER_H
5 * Copyright (c) 2019 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 <cstdint> // uint32_t
23 #include <dali/public-api/common/intrusive-ptr.h>
25 #include <dali/integration-api/events/key-event-integ.h>
26 #include <dali/integration-api/events/point.h>
27 #include <dali/integration-api/events/touch-event-combiner.h>
28 #include <dali/integration-api/scene.h>
29 #include <dali/devel-api/adaptor-framework/clipboard.h>
30 #include <dali/devel-api/adaptor-framework/style-monitor.h>
31 #include <dali/devel-api/adaptor-framework/clipboard.h>
34 #include <dali/internal/window-system/common/damage-observer.h>
35 #include <dali/internal/clipboard/common/clipboard-event-notifier-impl.h>
36 #include <dali/internal/window-system/common/damage-observer.h>
37 #include <dali/internal/window-system/common/window-base.h>
38 #include <dali/internal/system/common/core-event-interface.h>
59 class WindowRenderSurface;
62 * The Event Handler class is responsible for setting up receiving of Ecore events and then converts them
63 * to TouchEvents when it does receive them.
65 * These TouchEvents are then passed on to Core.
67 class EventHandler : public ConnectionTracker, public Dali::RefObject
72 * The observer can be overridden in order to listen to the events.
79 * Deriving classes should override this to be notified when we receive a touch point event.
80 * @param[in] point The touch point
81 * @param[in] timeStamp The time stamp
83 virtual void OnTouchPoint( Dali::Integration::Point& point, int timeStamp ) = 0;
86 * Deriving classes should override this to be notified when we receive a wheel event.
87 * @param[in] wheelEvent The wheel event
89 virtual void OnWheelEvent( Dali::Integration::WheelEvent& wheelEvent ) = 0;
92 * Deriving classes should override this to be notified when we receive a key event.
93 * @param[in] keyEvent The key event holding the key information.
95 virtual void OnKeyEvent( Dali::Integration::KeyEvent& keyEvent ) = 0;
98 * Deriving classes should override this to be notified when the window is rotated.
99 * @param[in] rotation The rotation event.
101 virtual void OnRotation( const RotationEvent& rotation ) = 0;
106 * Protected Constructor.
111 * Protected virtual destructor.
113 virtual ~Observer() {}
120 * @param[in] surface The render surface of the window.
121 * @param[in] damageObserver The damage observer (to pass damage events to).
123 EventHandler( WindowRenderSurface* surface, DamageObserver& damageObserver );
131 * Called when the adaptor is paused.
136 * Called when the adaptor is resumed (from pause).
141 * Adds an observer so that we can observe the events.
142 * @param[in] observer The observer.
144 void AddObserver( Observer& observer );
147 * Removes the observer from the EventHandler.
148 * @param[in] observer The observer to remove.
149 * @note Observers should remove themselves when they are destroyed.
151 void RemoveObserver( Observer& observer );
156 * Send a style change event to the style monitor.
157 * @param[in] styleChange The style that has changed.
159 void SendEvent( StyleChange::Type styleChange );
162 * Send a window damage event to the observer.
163 * @param[in] area Damaged area.
165 void SendEvent( const DamageArea& area );
168 * Called when a touch event is received.
170 void OnTouchEvent( Integration::Point& point, uint32_t timeStamp );
173 * Called when a mouse wheel is received.
175 void OnWheelEvent( WheelEvent& wheelEvent );
178 * Called when a key event is received.
180 void OnKeyEvent( Integration::KeyEvent& keyEvent );
183 * Called when the window focus is changed.
185 void OnFocusChanged( bool focusIn );
188 * Called when the window is rotated.
189 * @param[in] event The rotation event
191 void OnRotation( const RotationEvent& event );
194 * Called when the window is damaged.
196 void OnWindowDamaged( const DamageArea& area );
199 * Called when the source window notifies us the content in clipboard is selected.
201 void OnSelectionDataSend( void* event );
204 * Called when the source window sends us about the selected content.
206 void OnSelectionDataReceived( void* event );
209 * Called when the style is changed.
211 void OnStyleChanged( StyleChange::Type styleChange );
216 EventHandler( const EventHandler& eventHandler );
219 EventHandler& operator=( const EventHandler& eventHandler );
223 Dali::StyleMonitor mStyleMonitor; ///< Handle to the style monitor, set on construction, to send font size and font change events to.
224 DamageObserver& mDamageObserver; ///< Reference to the DamageObserver, set on construction, to sent damage events to.
226 Dali::ClipboardEventNotifier mClipboardEventNotifier; ///< Pointer to the clipboard event notifier
227 Dali::Clipboard mClipboard;///< Pointer to the clipboard
229 using ObserverContainer = std::vector<Observer*>;
230 ObserverContainer mObservers; ///< A list of event observer pointers
232 bool mPaused; ///< The paused state of the adaptor.
235 } // namespace Adaptor
237 } // namespace Internal
241 #endif // DALI_INTERNAL_EVENT_HANDLER_H