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/public-api/images/native-image-interface.h>
28 * @addtogroup dali_core_images
32 namespace Internal DALI_INTERNAL
38 * @brief NativeImage represents a platform specific image resource.
39 * Its data is provided by native resources, such as shared bitmap memory or pixmap.
42 class DALI_IMPORT_API NativeImage : public Image
47 * @brief Constructor with creates an uninitialized NativeImage object.
49 * Use NativeImage::New(...) to create an initialised object.
57 * This is non-virtual since derived Handle types must not contain data or virtual methods.
63 * @brief This copy constructor is required for (smart) pointer semantics.
66 * @param [in] handle A reference to the copied handle
68 NativeImage( const NativeImage& handle );
71 * @brief This assignment operator is required for (smart) pointer semantics.
74 * @param[in] rhs A reference to the copied handle.
75 * @return A reference to this.
77 NativeImage& operator=( const NativeImage& rhs );
80 * @brief Trigger asynchronous creation of backing GL texture immediately.
82 * The normal policy is for a GL texture to created lazily when needed.
83 * This function forces the allocation of a texture to happen at the earliest
87 * @note If the application loses its GL context, native images may lose their
88 * GL textures. This function can be called again after context regain to force
89 * the creation of the GL texture if still needed.
91 void CreateGlTexture();
94 * @brief Create a new NativeImage, which used native resources.
96 * The maximum size of the image is limited by GL_MAX_TEXTURE_SIZE
98 * @param [in] nativeImageInterface An reference to the object of the interface implementation.
99 * @return A handle to a newly allocated object.
101 static NativeImage New( NativeImageInterface& nativeImageInterface );
104 * @brief Downcast an Object handle to NativeImage handle.
106 * If handle points to a NativeImage object, the downcast produces valid handle.
107 * If not, the returned handle is left unintialized.
109 * @param[in] handle Handle to an object.
110 * @return handle to a NativeImage or an uninitialized handle.
112 static NativeImage DownCast( BaseHandle handle );
114 public: // Not intended for application developers
116 explicit DALI_INTERNAL NativeImage( Internal::NativeImage* );
125 #endif // __DALI_NATIVE_IMAGE_H__