1 #ifndef DALI_TOOLKIT_INTERNAL_TEXTURE_UPLOAD_OBSERVER_H
2 #define DALI_TOOLKIT_INTERNAL_TEXTURE_UPLOAD_OBSERVER_H
5 * Copyright (c) 2021 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/adaptor-framework/pixel-buffer.h>
23 #include <dali/public-api/signals/dali-signal.h>
26 #include <dali-toolkit/internal/visuals/visual-url.h>
27 #include <dali-toolkit/public-api/dali-toolkit-common.h>
36 * @brief Base class used to observe the upload status of a texture.
38 * Derived class must implement the UploadComplete method which is
39 * executed once the texture is ready to draw.
41 class TextureUploadObserver
44 typedef Signal<void(TextureUploadObserver*)> DestructionSignalType; ///< Signal prototype for the Destruction Signal.
49 TextureUploadObserver();
52 * @brief Virtual destructor.
54 virtual ~TextureUploadObserver();
57 * The action to be taken once the async load has finished and the upload to GPU is completed.
58 * This should be overridden by the deriving class.
60 * @param[in] loadSuccess True if the texture load was successful (i.e. the resource is available). If false, then the resource failed to load. In future, this will automatically upload a "broken" image.
61 * @param[in] textureId The textureId of the loaded texture in the TextureManager
62 * @param[in] textureSet The TextureSet containing the Texture
63 * @param[in] useAtlasing True if atlasing was used (note: this may be different to what was requested)
64 * @param[in] atlasRect If using atlasing, this is the rectangle within the atlas to use.
65 * @param[in] preMultiplied True if the image had pre-multiplied alpha applied
67 virtual void UploadComplete(bool loadSuccess, int32_t textureId, TextureSet textureSet, bool useAtlasing, const Vector4& atlasRect, bool preMultiplied) = 0;
70 * The action to be taken once the async load has finished.
71 * This should be overridden by the deriving class.
73 * @param[in] loadSuccess True if the image load was successful (i.e. the resource is available). If false, then the resource failed to load.
74 * @param[in] pixelBuffer The PixelBuffer of the loaded image.
75 * @param[in] url The url address of the loaded image.
76 * @param[in] preMultiplied True if the image had pre-multiplied alpha applied
78 virtual void LoadComplete(bool loadSuccess, Devel::PixelBuffer pixelBuffer, const Internal::VisualUrl& url, bool preMultiplied) = 0;
81 * @brief Returns the destruction signal.
82 * This is emitted when the observer is destroyed.
83 * This is used by the observer notifier to mark this observer as destroyed (IE. It no longer needs notifying).
85 DestructionSignalType& DestructionSignal();
88 DestructionSignalType mDestructionSignal; ///< The destruction signal emitted when the observer is destroyed.
91 } // namespace Toolkit
95 #endif // DALI_TOOLKIT_INTERNAL_TEXTURE_UPLOAD_OBSERVER_H