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 namespace Internal DALI_INTERNAL
36 * @brief NinePatchImage represents an image resource that can be added to ImageActors.
37 * It contains a bitmap that is synchronously loaded from the file system that contains
38 * a 9 patch border - a 1 pixel border that describes the stretch borders and the child
41 * The class offers an API to read the stretch area and child area, but it does not
42 * remove the border from it's bitmap. An API can be used to obtain a BufferImage with
45 * Adding this image to an ImageActor using an Image handle will automatically convert
46 * to use the cropped BufferImage - if you don't retain a handle to this object, it will
47 * be automatically destroyed.
49 class DALI_IMPORT_API NinePatchImage : public ResourceImage
53 * @brief Constructor which creates an uninitialized NinePatchImage object.
55 * Use Image::New(...) to create an initialised object.
60 * @brief Create a new NinePatchImage.
62 * A pixel buffer for image data is allocated and loaded from the filesystem.
63 * Dali has ownership of the buffer.
64 * @note: default resource management policies are Immediate and Never
66 * @param [in] filename File to load synchronously into buffer
67 * @return a handle to a new instance of NinePatchImage
69 static NinePatchImage New( const std::string& filename );
72 * @brief Downcast an Object handle to NinePatchImage.
74 * If handle points to a NinePatchImage the downcast produces valid
75 * handle. If not the returned handle is left uninitialized.
77 * @param[in] handle to An object
78 * @return handle to a NinePatchImage or an uninitialized handle
80 static NinePatchImage DownCast( BaseHandle handle );
85 * This is non-virtual since derived Handle types must not contain data or virtual methods.
90 * @brief This copy constructor is required for (smart) pointer semantics.
92 * @param [in] handle A reference to the copied handle
94 NinePatchImage(const NinePatchImage& handle);
97 * @brief This assignment operator is required for (smart) pointer semantics.
99 * @param [in] rhs A reference to the copied handle
100 * @return A reference to this
102 NinePatchImage& operator=(const NinePatchImage& rhs);
105 * Get the stretch borders
106 * @return The border in pixels from the left, top, right, and bottom of the image respectively.
108 Vector4 GetStretchBorders();
111 * Get the child rectangle
112 * @return the position and size of the child rectangle
114 Rect<int> GetChildRectangle();
117 * Creates a buffer image from the bitmap with the 1 pixel border cropped off.
118 * This does not change the internal bitmap.
120 * @return The cropped BufferImage
122 BufferImage CreateCroppedBufferImage();
124 public: // Not intended for application developers
126 explicit DALI_INTERNAL NinePatchImage(Internal::NinePatchImage*);
131 #endif // __DALI_NINE_PATCH_IMAGE_H__