#define DALI_TOOLKIT_NPATCH_LOADER_H
/*
- * Copyright (c) 2022 Samsung Electronics Co., Ltd.
+ * Copyright (c) 2023 Samsung Electronics Co., Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
// EXTERNAL INCLUDES
#include <dali/devel-api/adaptor-framework/pixel-buffer.h>
-#include <dali/devel-api/common/owner-container.h>
+#include <dali/integration-api/processor-interface.h>
#include <dali/public-api/rendering/texture-set.h>
#include <string>
+#include <utility> // for std::pair
// INTERNAL INCLUDES
#include <dali-toolkit/devel-api/utility/npatch-utilities.h>
* small space and there's not usually a lot of them. Usually N patches are specified in
* toolkit default style and there is 1-2 per control that are shared across the whole application.
*/
-class NPatchLoader
+class NPatchLoader : public Integration::Processor
{
public:
/**
* @param [in] synchronousLoading True if the image will be loaded in synchronous time.
* @return id of the texture.
*/
- std::size_t Load(TextureManager& textureManager, TextureUploadObserver* textureObserver, const VisualUrl& url, const Rect<int>& border, bool& preMultiplyOnLoad, bool synchronousLoading);
-
- /**
- * @brief Set loaded PixelBuffer and its information
- *
- * @param [in] id cache data id
- * @param [in] pixelBuffer of loaded image
- * @param [in] preMultiplied True if the image had pre-multiplied alpha applied
- */
- void SetNPatchData(std::size_t id, Devel::PixelBuffer& pixelBuffer, bool preMultiplied);
+ NPatchData::NPatchDataId Load(TextureManager& textureManager, TextureUploadObserver* textureObserver, const VisualUrl& url, const Rect<int>& border, bool& preMultiplyOnLoad, bool synchronousLoading);
/**
* @brief Retrieve N patch data matching to an id
* @param [out] data const pointer to the NPatchData
* @return true if data matching to id was really found
*/
- bool GetNPatchData(const NPatchData::NPatchDataId id, const NPatchData*& data);
+ bool GetNPatchData(const NPatchData::NPatchDataId id, NPatchDataPtr& data);
/**
- * @brief Remove a texture matching id.
- * Erase the observer from the observer list of cache.
- * If the observer list is empty, the textureSet will be reset.
+ * @brief Request remove a texture matching id.
+ * Erase the observer from the observer list of cache if we need.
*
* @param [in] id cache data id
* @param [in] textureObserver The NPatchVisual that requested loading.
*/
- void Remove(std::size_t id, TextureUploadObserver* textureObserver);
+ void RequestRemove(NPatchData::NPatchDataId id, TextureUploadObserver* textureObserver);
+
+protected: // Implementation of Processor
+ /**
+ * @copydoc Dali::Integration::Processor::Process()
+ */
+ void Process(bool postProcessor) override;
+
+ /**
+ * @copydoc Dali::Integration::Processor::GetProcessorName()
+ */
+ std::string_view GetProcessorName() const override
+ {
+ return "NPatchLoader";
+ }
private:
NPatchData::NPatchDataId GenerateUniqueNPatchDataId();
int32_t GetCacheIndexFromId(const NPatchData::NPatchDataId id);
+ /**
+ * @brief Remove a texture matching id.
+ * Erase the observer from the observer list of cache if we need.
+ * This API decrease cached NPatchInfo reference.
+ * If the NPatchInfo reference become 0, the textureSet will be reset.
+ *
+ * @param [in] id cache data id
+ * @param [in] textureObserver The NPatchVisual that requested loading.
+ */
+ void Remove(NPatchData::NPatchDataId id, TextureUploadObserver* textureObserver);
+
+private:
+ /**
+ * @brief Information of NPatchData
+ * It also hold ownership of NPatchData memory.
+ */
+ struct NPatchInfo
+ {
+ NPatchInfo(NPatchDataPtr data)
+ : mData(data),
+ mReferenceCount(1u)
+ {
+ }
+ ~NPatchInfo()
+ {
+ }
+ NPatchInfo(NPatchInfo&& info) noexcept // move constructor
+ {
+ mData = std::move(info.mData);
+ mReferenceCount = info.mReferenceCount;
+ info.mReferenceCount = 0u;
+ }
+ NPatchInfo& operator=(NPatchInfo&& info) noexcept // move operator
+ {
+ mData = std::move(info.mData);
+ mReferenceCount = info.mReferenceCount;
+ info.mReferenceCount = 0u;
+ return *this;
+ }
+
+ NPatchInfo() = delete; // Do not use default constructor
+ NPatchInfo(const NPatchInfo& info) = delete; // Do not use copy constructor
+ NPatchInfo& operator=(const NPatchInfo& info) = delete; // Do not use copy assign
+
+ NPatchDataPtr mData;
+ std::int16_t mReferenceCount; ///< The number of N-patch visuals that use this data.
+ };
+
+ /**
+ * @brief Get cached NPatchData by inputed url and border. If there is no cached data, create new one.
+ * @note This API increase cached NPatchInfo reference.
+ *
+ * @param [in] url to retrieve
+ * @param [in] border The border size of the image
+ * @param [in,out] preMultiplyOnLoad True if the image color should be multiplied by it's alpha. Set to false if the
+ * image has no alpha channel
+ * @return NPatchData pointer that Load function will used.
+ */
+ NPatchDataPtr GetNPatchData(const VisualUrl& url, const Rect<int>& border, bool& preMultiplyOnLoad);
+
protected:
/**
* Undefined copy constructor.
NPatchLoader& operator=(const NPatchLoader& rhs);
private:
- NPatchData::NPatchDataId mCurrentNPatchDataId;
- OwnerContainer<NPatchData*> mCache;
+ NPatchData::NPatchDataId mCurrentNPatchDataId;
+ std::vector<NPatchInfo> mCache;
+
+ std::vector<std::pair<NPatchData::NPatchDataId, TextureUploadObserver*>> mRemoveQueue; ///< Queue of textures to remove at PostProcess. It will be cleared after PostProcess.
+
+ bool mRemoveProcessorRegistered : 1; ///< Flag if remove processor registered or not.
};
} // namespace Internal
projects / platform / core / uifw / dali-toolkit.git / blobdiff