add screen library

ide-touchgfx-gen/Middlewares/ST/touchgfx/framework/include/common/Partition.hpp

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+/**
+  ******************************************************************************
+  * This file is part of the TouchGFX 4.16.1 distribution.
+  *
+  * <h2><center>&copy; Copyright (c) 2021 STMicroelectronics.
+  * All rights reserved.</center></h2>
+  *
+  * This software component is licensed by ST under Ultimate Liberty license
+  * SLA0044, the "License"; You may not use this file except in compliance with
+  * the License. You may obtain a copy of the License at:
+  *                             www.st.com/SLA0044
+  *
+  ******************************************************************************
+  */
+
+/**
+ * @file common/Partition.hpp
+ *
+ * Declares the touchgfx::Partition class.
+ */
+#ifndef PARTITION_HPP
+#define PARTITION_HPP
+
+#include <common/AbstractPartition.hpp>
+#include <common/Meta.hpp>
+
+namespace touchgfx
+{
+/**
+ * This type provides a concrete Partition of memory-slots capable of holding any of the
+ * specified list of types.
+ *
+ * The Partition is not aware of the types stored in the Partition memory, hence it
+ * provides no mechanism for deleting C++ objects when the Partition is clear()'ed.
+ *
+ * This class implements AbstractPartition.
+ *
+ * @tparam ListOfTypes        Type of the list of types.
+ * @tparam NUMBER_OF_ELEMENTS Type of the number of elements.
+ *
+ * @see AbstractPartition
+ */
+template <typename ListOfTypes, uint16_t NUMBER_OF_ELEMENTS>
+class Partition : public AbstractPartition
+{
+public:
+    /** Provides a generic public type containing the list of supported types. */
+    typedef ListOfTypes SupportedTypesList;
+
+    /**
+     * Compile-time generated constants specifying the "element" or "slot" size used by this
+     * partition.
+     */
+    enum
+    {
+        INTS_PR_ELEMENT = (sizeof(typename meta::select_type_maxsize<SupportedTypesList>::type) + sizeof(int) - 1) / sizeof(int),
+        SIZE_OF_ELEMENT = INTS_PR_ELEMENT * sizeof(int)
+    };
+
+    virtual uint16_t capacity() const
+    {
+        return NUMBER_OF_ELEMENTS;
+    }
+
+    virtual uint32_t element_size()
+    {
+        return sizeof(stBlocks[0]);
+    }
+
+protected:
+    virtual void* element(uint16_t index)
+    {
+        return &stBlocks[index];
+    }
+
+    virtual const void* element(uint16_t index) const
+    {
+        return &stBlocks[index];
+    }
+
+private:
+    /** Internal type used for storage, in order to ensure "natural" alignment of elements. */
+    struct Block
+    {
+        int filler[INTS_PR_ELEMENT];
+    };
+
+    Block stBlocks[NUMBER_OF_ELEMENTS]; ///< Actual memory storage
+};
+
+} // namespace touchgfx
+
+#endif // PARTITION_HPP