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// This contains the definitions for the implementation of dataCache.
//
// Copyright (c) 2018 Riverbank Computing Limited <info@riverbankcomputing.com>
//
// This file is part of PyQt5.
//
// This file may be used under the terms of the GNU General Public License
// version 3.0 as published by the Free Software Foundation and appearing in
// the file LICENSE included in the packaging of this file. Please review the
// following information to ensure the GNU General Public License version 3.0
// requirements will be met: http://www.gnu.org/copyleft/gpl.html.
//
// If you do not wish to use this file under the terms of the GPL version 3.0
// then you may purchase a commercial license. For more information contact
// info@riverbankcomputing.com.
//
// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
#ifndef _QPYOPENGL_DATACACHE_H
#define _QPYOPENGL_DATACACHE_H
#include <Python.h>
#include "sipAPIQtGui.h"
#if defined(SIP_FEATURE_PyQt_OpenGL)
#include <QHash>
// The wrapper around the actual array memory.
struct Array
{
Array();
~Array();
// Clear the array.
void clear();
// Traverse the array for the garbage collector.
int traverse(visitproc visit, void *arg);
// The data. If it is 0 then any data is provided by an object that
// implements the buffer protocol.
void *data;
#if PY_VERSION_HEX >= 0x02060300
// The buffer information. The obj element is a reference to the object
// that implements the buffer protocol.
sipBufferInfoDef buffer;
#else
// A reference to the object that implements the buffer protocol.
PyObject *buffer;
#endif
};
typedef QHash<unsigned, Array *> SecondaryCache;
// The cache for all value arrays for a particular primary key.
struct PrimaryCacheEntry
{
PrimaryCacheEntry();
~PrimaryCacheEntry();
// The cache entry for a secondary key of zero.
Array skey_0;
// The cache entries for all non-zero secondary keys.
SecondaryCache *skey_n;
};
typedef QHash<const char *, PrimaryCacheEntry *> PrimaryCache;
extern "C" {
// This defines the structure of a data cache for OpenGL.
typedef struct {
PyObject_HEAD
// The most recent uncached array, if any.
Array *uncached;
// The primary cache.
PrimaryCache *pcache;
} qpyopengl_dataCache;
}
// The type object.
extern PyTypeObject *qpyopengl_dataCache_TypeObject;
bool qpyopengl_dataCache_init_type();
qpyopengl_dataCache *qpyopengl_dataCache_New();
#endif
#endif
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