1 #ifndef __DALI_INTERNAL_RESOURCE_IMAGE_H__
2 #define __DALI_INTERNAL_RESOURCE_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.
25 #include <dali/public-api/images/resource-image.h>
26 #include <dali/internal/event/images/image-impl.h>
27 #include <dali/integration-api/debug.h> // For DALI_LOG_OBJECT_STRING_DECLARATION
36 typedef IntrusivePtr<ResourceImage> ResourceImagePtr;
39 * ResourceImage is an image loaded using a URL, it is an image resource that can be added to actors etc.
41 class ResourceImage : public Image
46 * Creates a pointer to an uninitialized Image object.
47 * @return a pointer to a newly created object.
49 static ResourceImagePtr New();
52 * Creates object and loads image from filesystem
53 * the maximum size of the image is limited by GL_MAX_TEXTURE_SIZE
54 * @param [in] url The URL of the image file.
55 * @param [in] attributes requested parameters for loading (size, scaling etc.)
56 * if width or height is specified as 0, the natural size will be used.
57 * @return a pointer to a newly created object.
59 static ResourceImagePtr New( const std::string& url,
60 const ImageAttributes& attributes );
63 * @copydoc Dali::ResourceImage::GetLoadingState()
65 Dali::LoadingState GetLoadingState() const { return mLoadingState; }
68 * @copydoc Dali::ResourceImage::LoadingFinishedSignal()
70 Dali::ResourceImage::ResourceImageSignal& LoadingFinishedSignal() { return mLoadingFinished; }
73 * Connects a callback function with the object's signals.
74 * @param[in] object The object providing the signal.
75 * @param[in] tracker Used to disconnect the signal.
76 * @param[in] signalName The signal to connect to.
77 * @param[in] functor A newly allocated FunctorDelegate.
78 * @return True if the signal was connected.
79 * @post If a signal was connected, ownership of functor was passed to CallbackBase. Otherwise the caller is responsible for deleting the unused functor.
81 static bool DoConnectSignal( BaseObject* object, ConnectionTrackerInterface* tracker, const std::string& signalName, FunctorDelegate* functor );
84 * Get the attributes of the image.
85 * Only to be used after the image has finished loading.
86 * (Ticket's LoadingSucceeded callback was called)
87 * Reflects the last cached values after a LoadComplete.
88 * If requested width or height was 0, they are replaced by concrete dimensions.
89 * @return a copy of the attributes
91 const ImageAttributes& GetAttributes() const;
94 * @copydoc Dali::ResourceImage::GetUrl()
95 * virtual so deriving class can override it
97 virtual const std::string& GetUrl() const;
100 * @copydoc Dali::ResourceImage::Reload()
105 * @copydoc Dali::Image::GetWidth()
107 virtual unsigned int GetWidth() const;
110 * @copydoc Dali::Image::GetWidth()
112 virtual unsigned int GetHeight() const;
115 * @copydoc Dali::Internal::Image::GetNaturalSize()
117 virtual Vector2 GetNaturalSize() const;
123 * A reference counted object may only be deleted by calling Unreference()
125 virtual ~ResourceImage();
128 * Constructor, with default parameters
133 * Constructor, with url and attributes
135 ResourceImage( const std::string& url, const ImageAttributes& attributes);
138 Dali::ResourceImage::ResourceImageSignal mLoadingFinished;
139 ImageAttributes mAttributes;
141 Dali::LoadingState mLoadingState;
143 // Changes scope, should be at end of class
144 DALI_LOG_OBJECT_STRING_DECLARATION;
147 } // namespace Internal
150 * Helper methods for public API.
152 inline Internal::ResourceImage& GetImplementation(Dali::ResourceImage& image)
154 DALI_ASSERT_ALWAYS( image && "Image handle is empty" );
156 BaseObject& handle = image.GetBaseObject();
158 return static_cast<Internal::ResourceImage&>(handle);
161 inline const Internal::ResourceImage& GetImplementation(const Dali::ResourceImage& image)
163 DALI_ASSERT_ALWAYS( image && "Image handle is empty" );
165 const BaseObject& handle = image.GetBaseObject();
167 return static_cast<const Internal::ResourceImage&>(handle);
171 #endif // __DALI_INTERNAL_RESOURCE_IMAGE_H__