5 * Copyright (c) 2020 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/actors/actor.h>
23 #include <dali/public-api/actors/camera-actor.h>
24 #include <dali/public-api/rendering/texture.h>
25 #include <dali/public-api/signals/dali-signal.h>
28 #include <dali/public-api/adaptor-framework/native-image-source.h>
29 #include <dali/public-api/dali-adaptor-common.h>
34 * @addtogroup dali_adaptor_framework
38 namespace Internal DALI_INTERNAL
44 } // namespace DALI_INTERNAL
47 * @brief Capture snapshots the current scene and save as a file.
51 * Applications should follow the example below to create capture :
54 * Capture capture = Capture::New();
57 * If required, you can also connect class member function to a signal :
60 * capture.FinishedSignal().Connect(this, &CaptureSceneExample::OnCaptureFinished);
63 * At the connected class member function, you can know whether capture finish state.
66 * void CaptureSceneExample::OnCaptureFinished( Capture capture, Capture::FinishState state )
68 * if ( state == Capture::FinishState::SUCCEEDED )
79 class DALI_ADAPTOR_API Capture : public BaseHandle
83 * @brief The enumerations used for checking capture success
86 enum class FinishState
88 SUCCEEDED, ///< Succeeded in saving the result after capture
89 FAILED ///< Failed to capture by time out or to save the result
93 * @brief Typedef for finished signals sent by this class.
97 typedef Signal<void(Capture, Capture::FinishState)> CaptureFinishedSignalType;
100 * @brief Create an uninitialized Capture; this can be initialized with Actor::New().
104 * Calling member functions with an uninitialized Dali::Object is not allowed.
109 * @brief Create an initialized Capture.
113 * @return A handle to a newly allocated Dali resource.
114 * @note Projection mode of default cameraActor is Dali::Camera::PERSPECTIVE_PROJECTION
116 static Capture New();
119 * @brief Create an initialized Capture.
123 * @param[in] cameraActor An initialized CameraActor.
124 * @return A handle to a newly allocated Dali resource.
126 static Capture New(Dali::CameraActor cameraActor);
129 * @brief Downcast an Object handle to Capture handle.
133 * If handle points to a Capture object the downcast produces valid
134 * handle. If not the returned handle is left uninitialized.
136 * @param[in] handle to An object.
137 * @return handle to a Capture object or an uninitialized handle.
139 static Capture DownCast(BaseHandle handle);
142 * @brief Dali::Actor is intended as a base class.
146 * This is non-virtual since derived Handle types must not contain data or virtual methods.
151 * @brief This copy constructor is required for (smart) pointer semantics.
155 * @param[in] copy A reference to the copied handle.
157 Capture(const Capture& copy);
160 * @brief This assignment operator is required for (smart) pointer semantics.
164 * @param[in] rhs A reference to the copied handle.
165 * @return A reference to this.
167 Capture& operator=(const Capture& rhs);
170 * @brief Move constructor.
173 * @param[in] rhs A reference to the moved handle
175 Capture(Capture&& rhs);
178 * @brief Move assignment operator.
181 * @param[in] rhs A reference to the moved handle
182 * @return A reference to this handle
184 Capture& operator=(Capture&& rhs);
187 * @brief Start capture and save the image as a file.
190 * @param[in] source source actor to be used for capture.
191 * This source must be added on the window in advance.
192 * @param[in] position top-left position of area to be captured
193 * this position is defined in the window.
194 * @param[in] size captured size.
195 * @param[in] path image file path to be saved as a file.
196 * If path is empty string, the captured result is not be saved as a file.
197 * @param[in] clearColor background color of captured scene
198 * @note suppose that we want to capture actor 'A'. And, the actor 'A' is overlapped by another actor 'B' that is not a child of 'A'.
199 * in this case, if source is root of scene, the captured image includes a part of actor 'B' on the 'A'.
200 * however, if source is just actor 'A', the result includes only 'A'.
202 void Start(Actor source, const Vector2& position, const Vector2& size, const std::string& path, const Vector4& clearColor);
205 * @brief Start capture and save the image as a file.
209 * @param[in] source source actor to be used for capture.
210 * This source must be added on the window in advance.
211 * @param[in] size captured size.
212 * @param[in] path image file path to be saved as a file.
213 * If path is empty string, the captured result is not be saved as a file.
214 * @param[in] clearColor background color of captured scene
215 * @param[in] quality The value to control image quality for jpeg file format in the range [1, 100]
217 void Start(Actor source, const Vector2& size, const std::string& path, const Vector4& clearColor, const uint32_t quality);
220 * @brief Start capture and save the image as a file.
224 * @param[in] source source actor to be used for capture.
225 * This source must be added on the window in advance.
226 * @param[in] size captured size.
227 * @param[in] path image file path to be saved as a file.
228 * If path is empty string, the captured result is not be saved as a file.
229 * @param[in] clearColor background color of captured scene
231 void Start(Actor source, const Vector2& size, const std::string& path, const Vector4& clearColor);
234 * @brief Start capture and save the image as a file.
238 * @param[in] source source actor to be used for capture.
239 * This source must be added on the window in advance.
240 * @param[in] size captured size.
241 * @param[in] path image file path to be saved as a file.
242 * If path is empty string, the captured result is not be saved as a file.
243 * @note Clear color is transparent.
245 void Start(Actor source, const Vector2& size, const std::string& path);
248 * @brief Set result image quality in case of jpeg
250 * @param[in] quality The value to control image quality for jpeg file format in the range [1, 100]
252 void SetImageQuality(uint32_t quality);
255 * @brief Get NativeImageSourcePtr that is saved captured image.
259 * @return NativeImageSourcePtr Captured result that can be rendered with DALi
261 Dali::NativeImageSourcePtr GetNativeImageSource() const;
264 * @brief Get Texture of captured image.
266 * @return Texture Captured result
268 Dali::Texture GetTexture();
271 * @brief Get finished signal.
275 * @return finished signal instance.
277 CaptureFinishedSignalType& FinishedSignal();
279 public: // Not intended for application developers
282 * @brief This constructor is used by New() methods.
286 * @param[in] internal A pointer to a newly allocated Dali resource.
288 explicit DALI_INTERNAL Capture(Internal::Adaptor::Capture* internal);
298 #endif // DALI_CAPTURE_H