1 #ifndef __DALI_NINE_PATCH_IMAGE_H__
2 #define __DALI_NINE_PATCH_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/resource-image.h>
23 #include <dali/public-api/images/buffer-image.h>
24 #include <dali/public-api/math/rect.h>
29 * @addtogroup dali_core_images
33 namespace Internal DALI_INTERNAL
39 * @brief NinePatchImage represents an nine-patch image resource.
41 * It contains a bitmap that is synchronously loaded from the file system that contains
42 * a 9 patch border - a 1 pixel border that describes the stretch borders and the child
45 * The class offers an API to read the stretch area and child area, but it does not
46 * remove the border from it's bitmap. An API can be used to obtain a BufferImage with
49 * @remarks This is an experimental feature for ImageActor and might not be supported in the next release.
50 * We do recommend not to use it.
52 class DALI_IMPORT_API NinePatchImage : public ResourceImage
56 * @brief Constructor which creates an uninitialized NinePatchImage object.
58 * Use @ref Image::New to create an initialised object.
64 * @brief Create a new NinePatchImage.
66 * A pixel buffer for image data is allocated and loaded from the filesystem.
67 * Dali has ownership of the buffer.
69 * @param [in] filename File to load synchronously into buffer
70 * @return A handle to a new instance of NinePatchImage
71 * @note Default resource management policies are Immediate and Never
74 static NinePatchImage New( const std::string& filename );
77 * @brief Downcast a handle to NinePatchImage handle.
79 * If handle points to a NinePatchImage the downcast produces valid
80 * handle. If not the returned handle is left uninitialized.
83 * @param[in] handle Handle to an object
84 * @return Handle to a NinePatchImage or an uninitialized handle
86 static NinePatchImage DownCast( BaseHandle handle );
91 * This is non-virtual since derived Handle types must not contain data or virtual methods.
97 * @brief This copy constructor is required for (smart) pointer semantics.
100 * @param [in] handle A reference to the copied handle
102 NinePatchImage(const NinePatchImage& handle);
105 * @brief This assignment operator is required for (smart) pointer semantics.
108 * @param [in] rhs A reference to the copied handle
109 * @return A reference to this
111 NinePatchImage& operator=(const NinePatchImage& rhs);
114 * @brief Get the stretch borders
116 * @return The border in pixels from the left, top, right, and bottom of the image respectively.
118 Vector4 GetStretchBorders();
121 * @brief Get the child rectangle
123 * @return The position and size of the child rectangle
125 Rect<int> GetChildRectangle();
128 * @brief Creates a buffer image from the bitmap with the 1 pixel border cropped off.
130 * This does not change the internal bitmap.
133 * @return The cropped BufferImage
135 BufferImage CreateCroppedBufferImage();
137 public: // Not intended for application developers
139 explicit DALI_INTERNAL NinePatchImage(Internal::NinePatchImage*);
147 #endif // __DALI_NINE_PATCH_IMAGE_H__