1 #ifndef DALI_STAGE_DEVEL_H
2 #define DALI_STAGE_DEVEL_H
5 * Copyright (c) 2024 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/devel-api/common/stage.h>
23 #include <dali/devel-api/update/update-proxy.h>
27 class FrameCallbackInterface;
32 * @brief The DALi rendering behavior.
36 IF_REQUIRED, ///< Default. Will only render if required to do so.
37 CONTINUOUSLY, ///< Will render continuously.
40 using KeyEventGeneratedSignalType = Signal<bool(const KeyEvent&)>; ///< Stage key event generated signal type
43 * @brief The user would connect to this signal to get a KeyEvent when KeyEvent is generated.
45 * @param[in] stage The stage to emit a signal
46 * @return The return is true if KeyEvent is consumed, otherwise false.
48 DALI_CORE_API KeyEventGeneratedSignalType& KeyEventGeneratedSignal(Dali::Stage stage);
51 * @brief Gives the user the ability to set the rendering behavior of DALi.
53 * @param[in] stage The stage
54 * @param[in] renderingBehavior The rendering behavior required.
56 * @note By default, DALi uses Rendering::IF_REQUIRED.
59 DALI_CORE_API void SetRenderingBehavior(Dali::Stage stage, Rendering renderingBehavior);
62 * @brief Retrieves the rendering behavior of DALi.
64 * @param[in] stage The stage
65 * @return The rendering behavior of DALi.
67 DALI_CORE_API Rendering GetRenderingBehavior(Dali::Stage stage);
70 * @brief The FrameCallbackInterface implementation added gets called on every frame from the update-thread.
72 * @param[in] stage The stage to set the FrameCallbackInterface implementation on
73 * @param[in] frameCallback An implementation of the FrameCallbackInterface
74 * @param[in] rootActor The root-actor in the scene that the callback applies to. Or empty handle if we don't care whether the node is scene on or not.
76 * @note The frameCallback cannot be added more than once. This will assert if that is attempted.
77 * @note Only the rootActor and it's children will be parsed by the UpdateProxy.
78 * @note If the rootActor is destroyed, then the callback is automatically removed.
79 * @note If the rootActor is empty handle, given frameCallback will not be removed automatically.
80 * @see FrameCallbackInterface
82 DALI_CORE_API void AddFrameCallback(Dali::Stage stage, FrameCallbackInterface& frameCallback, Actor rootActor);
85 * @brief Removes the specified FrameCallbackInterface implementation from being called on every frame.
87 * @param[in] stage The stage to clear the FrameCallbackInterface on
88 * @param[in] frameCallback The FrameCallbackInterface implementation to remove
90 * @note This function will block if the FrameCallbackInterface::Update method is being processed in the update-thread.
91 * @note If the callback implementation has already been removed, then this is a no-op.
93 DALI_CORE_API void RemoveFrameCallback(Dali::Stage stage, FrameCallbackInterface& frameCallback);
96 * @brief Notify the frame callback that there is a new sync point.
98 * The sync point can be matched during a subsequent frameCallback::Update().
100 * @param[in] stage The stage to clear the FrameCallbackInterface on
101 * @param[in] frameCallback The FrameCallbackInterface implementation to notify
103 * @return NotifySyncPoint - a unique sync value that will also be sent to the
104 * UpdateProxy prior to FrameCallback::Update() being called from the update thread.
106 DALI_CORE_API UpdateProxy::NotifySyncPoint NotifyFrameCallback(Dali::Stage stage, FrameCallbackInterface& frameCallback);
108 } // namespace DevelStage
112 #endif // DALI_STAGE_DEVEL_H