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/common/vector-wrapper.h>
23 #include <dali/public-api/images/resource-image.h>
24 #include <dali/public-api/images/buffer-image.h>
25 #include <dali/public-api/math/rect.h>
30 namespace Internal DALI_INTERNAL
37 * @brief NinePatchImage represents an image resource that can be added to ImageActors.
38 * It contains a bitmap that is synchronously loaded from the file system that contains
39 * a 9 patch border - a 1 pixel border that describes the stretch borders and the child
42 * The class offers an API to read the stretch area and child area, but it does not
43 * remove the border from it's bitmap. An API can be used to obtain a BufferImage with
46 * Adding this image to an ImageActor using an Image handle will automatically convert
47 * to use the cropped BufferImage - if you don't retain a handle to this object, it will
48 * be automatically destroyed.
50 class DALI_IMPORT_API NinePatchImage : public ResourceImage
54 * @brief Constructor which creates an uninitialized NinePatchImage object.
56 * Use Image::New(...) to create an initialised object.
61 * @brief Create a new NinePatchImage.
63 * A pixel buffer for image data is allocated and loaded from the filesystem.
64 * Dali has ownership of the buffer.
65 * @note: default resource management policies are Immediate and Never
67 * @param [in] filename File to load synchronously into buffer
68 * @return a handle to a new instance of NinePatchImage
70 static NinePatchImage New( const std::string& filename );
73 * @brief Downcast an Object handle to NinePatchImage.
75 * If handle points to a NinePatchImage the downcast produces valid
76 * handle. If not the returned handle is left uninitialized.
78 * @param[in] handle to An object
79 * @return handle to a NinePatchImage or an uninitialized handle
81 static NinePatchImage DownCast( BaseHandle handle );
86 * This is non-virtual since derived Handle types must not contain data or virtual methods.
91 * @brief This copy constructor is required for (smart) pointer semantics.
93 * @param [in] handle A reference to the copied handle
95 NinePatchImage(const NinePatchImage& handle);
98 * @brief This assignment operator is required for (smart) pointer semantics.
100 * @param [in] rhs A reference to the copied handle
101 * @return A reference to this
103 NinePatchImage& operator=(const NinePatchImage& rhs);
106 * Get the stretch borders
107 * @return The border in pixels from the left, top, right, and bottom of the image respectively.
109 Vector4 GetStretchBorders();
112 * Get the child rectangle
113 * @return the position and size of the child rectangle
115 Rect<int> GetChildRectangle();
118 * Creates a buffer image from the bitmap with the 1 pixel border cropped off.
119 * This does not change the internal bitmap.
121 * @return The cropped BufferImage
123 BufferImage CreateCroppedBufferImage();
125 public: // Not intended for application developers
127 explicit DALI_INTERNAL NinePatchImage(Internal::NinePatchImage*);
132 #endif // __DALI_NINE_PATCH_IMAGE_H__