1 #ifndef __DALI_NATIVE_IMAGE_H__
2 #define __DALI_NATIVE_IMAGE_H__
5 * Copyright (c) 2015 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/images/image.h>
23 #include <dali/devel-api/images/native-image-interface.h>
28 namespace Internal DALI_INTERNAL
34 * @brief NativeImage represents an image resource that can be added to ImageActors.
35 * Its data is provided by native resources, such as shared bitmap memory or pixmap from X11 or ECORE-X11, etc.
37 class DALI_IMPORT_API NativeImage : public Image
42 * @brief Constructor with creates an uninitialized NativeImage object.
44 * Use NativeImage::New(...) to create an initialised object.
51 * This is non-virtual since derived Handle types must not contain data or virtual methods.
56 * @brief This copy constructor is required for (smart) pointer semantics.
58 * @param [in] handle A reference to the copied handle
60 NativeImage( const NativeImage& handle );
63 * @brief This assignment operator is required for (smart) pointer semantics.
65 * @param[in] rhs A reference to the copied handle.
66 * @return A reference to this.
68 NativeImage& operator=( const NativeImage& rhs );
71 * @brief Trigger asynchronous creation of backing GL texture immediately.
73 * The normal policy is for a GL texture to created lazily when needed.
74 * This function forces the allocation of a texture to happen at the earliest
77 * @note If the application loses its GL context, native images may lose their
78 * GL textures. This function can be called again after context regain to force
79 * the creation of the GL texture if still needed.
81 void CreateGlTexture();
84 * @brief Create a new NativeImage, which used native resources.
86 * The maximum size of the image is limited by GL_MAX_TEXTURE_SIZE
87 * @param [in] nativeImageInterface An reference to the object of the interface implementation.
88 * @return A handle to a newly allocated object.
90 static NativeImage New( NativeImageInterface& nativeImageInterface );
93 * @brief Downcast an Object handle to NativeImage handle.
95 * If handle points to a NativeImage object, the downcast produces valid handle.
96 * If not, the returned handle is left unintialized.
97 * @param[in] handle Handle to an object.
98 * @return handle to a NativeImage or an uninitialized handle.
100 static NativeImage DownCast( BaseHandle handle );
102 public: // Not intended for application developers
104 explicit DALI_INTERNAL NativeImage( Internal::NativeImage* );
110 #endif // __DALI_NATIVE_IMAGE_H__