X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=dali%2Fpublic-api%2Fimages%2Fresource-image.h;h=e74e30acd940e4d269a3007ba083c1fcb2dbfbbb;hb=ff364987bf3c2ef5bb2b57348747eeb784d8ba90;hp=4ea879efd88bb378cd20e6b098bfa1c425166f5e;hpb=b6e41f0ba8c1908b0cc0c7900e3b84ce96d5ef20;p=platform%2Fcore%2Fuifw%2Fdali-core.git diff --git a/dali/public-api/images/resource-image.h b/dali/public-api/images/resource-image.h index 4ea879e..e74e30a 100644 --- a/dali/public-api/images/resource-image.h +++ b/dali/public-api/images/resource-image.h @@ -25,11 +25,14 @@ #include #include #include +#include namespace Dali { -struct Vector2; -class ImageAttributes; +/** + * @addtogroup dali_core_images + * @{ + */ namespace Internal DALI_INTERNAL { @@ -39,64 +42,29 @@ class ResourceImage; /** * @brief ResourceImage is an image loaded using a URL * - *

ResourceImage Loading

- * - * When the ResourceImage is created, resource loading will be attempted unless - * the ResourceImage is created with IMMEDIATE loading policy or a compatible resource is found in cache. - * In case of loading images ON_DEMAND, resource loading will only be attempted if the associated ImageActor - * is put on Stage. - * Custom loading requests can be made by providing an ImageAttributes object to ResourceImage::New(). - * - * LoadPolicies - * - IMMEDIATE: acquire image resource when creating ResourceImage. - * - ON_DEMAND: only load in case the associated ImageActor is put on Stage - * - * Resolution of conflicting policies - * If the same image is created more than once with conflicting policies, LoadPolicy "IMMEDIATE" overrides "ON_DEMAND". + * Customizing load requests * - * Custom load requests - * Size, scaling mode, orientation compensation can be set when requesting an image. - * See ImageAttributes for more details. - * - * Compatible resources - * - * Before loading a new ResourceImage the internal image resource cache is checked by dali. - * If there is an image already loaded in memory and is deemed "compatible" with the requested image, - * that resource is reused. - * This happens for example if a loaded image exists with the same URL, and the difference between both - * of the dimensions is less than 50%. + * Size, scaling mode, filter mode, and orientation compensation can be set when requesting an image. * * Reloading images * * The same request used on creating the ResourceImage is re-issued when reloading images. * If the file changed since the last load operation, this might result in a different resource. - * Reload only takes effect if both of these conditions apply: - * - The ResourceImage has already finished loading - * - The ResourceImage is either on Stage or using IMMEDIATE load policy + * Reload only takes effect if the ResourceImage has already finished loading. * * Signals - * | %Signal Name | Method | - * |------------------------|------------------------------| - * | image-loading-finished | @ref LoadingFinishedSignal() | + * | %Signal Name | Method | + * |----------------------|------------------------------| + * | imageLoadingFinished | @ref LoadingFinishedSignal() | + * @SINCE_1_0.0 */ class DALI_IMPORT_API ResourceImage : public Image { public: - /** - * @brief Resource management options. - */ - - /** - * @brief LoadPolicy controls the way images are loaded into memory. - */ - enum LoadPolicy - { - IMMEDIATE, ///< load image once it is created (default) - ON_DEMAND ///< delay loading until the image is being used (a related actor is added to Stage) - }; /** * @brief Type of signal for LoadingFinished and Uploaded. + * @SINCE_1_0.0 */ typedef Signal< void (ResourceImage) > ResourceImageSignal; @@ -109,15 +77,17 @@ public: * synchronous, so it should not be used repeatedly or in tight * loops. * + * @SINCE_1_0.0 * @param [in] url The URL of the image file. * @return The width and height in pixels of the image. */ - static Vector2 GetImageSize( const std::string& url ); + static ImageDimensions GetImageSize( const std::string& url ); /** * @brief Constructor which creates an empty ResourceImage object. * * Use ResourceImage::New(...) to create an initialised object. + * @SINCE_1_0.0 */ ResourceImage(); @@ -125,12 +95,14 @@ public: * @brief Destructor * * This is non-virtual since derived Handle types must not contain data or virtual methods. + * @SINCE_1_0.0 */ ~ResourceImage(); /** * @brief This copy constructor is required for (smart) pointer semantics. * + * @SINCE_1_0.0 * @param [in] handle A reference to the copied handle */ ResourceImage( const ResourceImage& handle ); @@ -138,71 +110,69 @@ public: /** * @brief This assignment operator is required for (smart) pointer semantics. * + * @SINCE_1_0.0 * @param [in] rhs A reference to the copied handle * @return A reference to this */ ResourceImage& operator=( const ResourceImage& rhs ); /** - * @brief Create an initialised ResourceImage object. - * - * @param [in] url The URL of the image file to use. - * @return A handle to a newly allocated object + * @name ResourceImageFactoryFunctions + * Create ResourceImage object instances using these functions. */ - static ResourceImage New( const std::string& url ); + ///@{ /** * @brief Create an initialised ResourceImage object. * - * @param [in] url The URL of the image file to use. - * @param [in] loadPol The LoadPolicy to apply when loading the image resource. - * @param [in] releasePol The ReleasePolicy to apply to Image. - * @return A handle to a newly allocated object - */ - static ResourceImage New( const std::string& url, LoadPolicy loadPol, ReleasePolicy releasePol ); - - /** - * @brief Create an initialised ResourceImage object. + * Uses defaults for all options. * + * @sa Dali::FittingMode::Type Dali::SamplingMode::Type + * @SINCE_1_0.0 + * @REMARK_INTERNET * @param [in] url The URL of the image file to use. - * @param [in] attributes Requested parameters for loading (size, scaling etc.). + * @param [in] orientationCorrection Reorient the image to respect any orientation metadata in its header. * @return A handle to a newly allocated object */ - static ResourceImage New( const std::string& url, const ImageAttributes& attributes ); + static ResourceImage New( const std::string& url, bool orientationCorrection = true ); /** * @brief Create an initialised ResourceImage object. * + * @SINCE_1_0.0 + * @REMARK_INTERNET * @param [in] url The URL of the image file to use. - * @param [in] attributes Requested parameters for loading (size, scaling etc.). - * @param [in] loadPol The LoadPolicy to apply when loading the image resource. - * @param [in] releasePol The ReleasePolicy to apply to Image. + * @param [in] size The width and height to fit the loaded image to. + * @param [in] fittingMode The method used to fit the shape of the image before loading to the shape defined by the size parameter. + * @param [in] samplingMode The filtering method used when sampling pixels from the input image while fitting it to desired size. + * @param [in] orientationCorrection Reorient the image to respect any orientation metadata in its header. * @return A handle to a newly allocated object */ - static ResourceImage New( const std::string& url, const ImageAttributes& attributes, LoadPolicy loadPol, ReleasePolicy releasePol ); + static ResourceImage New( const std::string& url, + ImageDimensions size, + FittingMode::Type fittingMode = FittingMode::DEFAULT, + SamplingMode::Type samplingMode = SamplingMode::DEFAULT, + bool orientationCorrection = true ); + + ///@} /** - * @brief Downcast an Object handle to ResourceImage handle. + * @brief Downcast a handle to ResourceImage handle. * * If handle points to a ResourceImage object the * downcast produces valid handle. If not the returned handle is left uninitialized. - * @param[in] handle to An object - * @return handle to a Image object or an uninitialized handle + * @SINCE_1_0.0 + * @param[in] handle Handle to an object + * @return Handle to a Image object or an uninitialized handle */ static ResourceImage DownCast( BaseHandle handle ); /** - * @brief Return load policy. - * - * @return resource load policy - */ - LoadPolicy GetLoadPolicy() const; - - /** * @brief Query whether the image data has loaded. * * The asynchronous loading begins when the Image object is created. * After the Image object is discarded, the image data will be released from memory. + * @SINCE_1_0.0 * @return The loading state, either Loading, Success or Failed. */ LoadingState GetLoadingState() const; @@ -210,6 +180,7 @@ public: /** * @brief Returns the URL of the image. * + * @SINCE_1_0.0 * @return The URL of the image file. */ std::string GetUrl() const; @@ -217,28 +188,20 @@ public: /** * @brief Reload image from filesystem. * - * The set ImageAttributes are used when requesting the image again. - * @note if Image is offstage and OnDemand policy is set, reload request is ignored. + * The original set of image loading attributes (requested dimensions, scaling + * mode and filter mode) are used when requesting the image again. + * @SINCE_1_0.0 + * @note If image is offstage and OnDemand policy is set, the reload request is + * ignored. */ void Reload(); - /** - * @brief Get the attributes of an image. - * - * Only to be used after the image has finished loading. - * (Ticket's LoadingSucceeded callback was called) - * The returned value will reflect the true image dimensions once the asynchronous loading has finished. - * Connect to SignalLoadingFinished or use GetLoadingState to make sure this value is actual. - * @pre image should be loaded - * @return a copy of the attributes - */ - ImageAttributes GetAttributes() const; - public: // Signals /** * @brief Emitted when the image data loads successfully, or when the loading fails. * + * @SINCE_1_0.0 * @return A signal object to Connect() with. */ ResourceImageSignal& LoadingFinishedSignal(); @@ -248,6 +211,9 @@ public: // Not intended for application developers explicit DALI_INTERNAL ResourceImage( Internal::ResourceImage* ); }; +/** + * @} + */ } // namespace Dali #endif // __DALI_RESOURCE_IMAGE_H__