/usr/include/PythonQt/PythonQtMisc.h is in libpythonqt-dev 2.1.0~svn247-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 | #ifndef _PYTHONQTMISC_H
#define _PYTHONQTMISC_H
/*
*
* Copyright (C) 2010 MeVis Medical Solutions AG All Rights Reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* Further, this software is distributed without any warranty that it is
* free of the rightful claim of any third person regarding infringement
* or the like. Any license provided herein, whether implied or
* otherwise, applies only to this software file. Patent licenses, if
* any, provided herein do not apply to combinations of this program with
* other software, or any other product whatsoever.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Contact information: MeVis Medical Solutions AG, Universitaetsallee 29,
* 28359 Bremen, Germany or:
*
* http://www.mevis.de
*
*/
//----------------------------------------------------------------------------------
/*!
// \file PythonQtMisc.h
// \author Florian Link
// \author Last changed by $Author: florian $
// \date 2006-05
*/
//----------------------------------------------------------------------------------
#include <QList>
#define PythonQtValueStorage_ADD_VALUE(store, type, value, ptr) \
{ type* item = (type*)store.nextValuePtr(); \
*item = value; \
ptr = (void*)item; \
}
#define PythonQtValueStorage_ADD_VALUE_IF_NEEDED(alreadyAllocatedPtr,store, type, value, ptr) \
{ \
type* item = (type*)(alreadyAllocatedPtr?alreadyAllocatedPtr:store.nextValuePtr()); \
*item = value; \
ptr = (void*)item; \
}
//! stores a position in the PythonQtValueStorage
class PythonQtValueStoragePosition {
public:
PythonQtValueStoragePosition() { chunkIdx = 0; chunkOffset = 0; }
int chunkIdx;
int chunkOffset;
};
//! a helper class that stores basic C++ value types in chunks
template <typename T, int chunkEntries> class PythonQtValueStorage
{
public:
PythonQtValueStorage() {
_chunkIdx = 0;
_chunkOffset = 0;
_currentChunk = new T[chunkEntries];
_chunks.append(_currentChunk);
};
//! clear all memory
void clear() {
T* chunk;
foreach(chunk, _chunks) {
delete[]chunk;
}
_chunks.clear();
}
//! get the current position to be restored with setPos
void getPos(PythonQtValueStoragePosition & pos) {
pos.chunkIdx = _chunkIdx;
pos.chunkOffset = _chunkOffset;
}
//! set the current position (without freeing memory, thus caching old entries for reuse)
void setPos(const PythonQtValueStoragePosition& pos) {
_chunkOffset = pos.chunkOffset;
if (_chunkIdx != pos.chunkIdx) {
_chunkIdx = pos.chunkIdx;
_currentChunk = _chunks.at(_chunkIdx);
}
}
//! add one default constructed value and return the pointer to it
T* nextValuePtr() {
if (_chunkOffset>=chunkEntries) {
_chunkIdx++;
if (_chunkIdx >= _chunks.size()) {
T* newChunk = new T[chunkEntries];
_chunks.append(newChunk);
_currentChunk = newChunk;
} else {
_currentChunk = _chunks.at(_chunkIdx);
}
_chunkOffset = 0;
}
T* newEntry = _currentChunk + _chunkOffset;
_chunkOffset++;
return newEntry;
};
protected:
QList<T*> _chunks;
int _chunkIdx;
int _chunkOffset;
T* _currentChunk;
};
//! a helper class that stores basic C++ value types in chunks and clears the unused values on setPos() usage.
template <typename T, int chunkEntries> class PythonQtValueStorageWithCleanup : public PythonQtValueStorage<T, chunkEntries>
{
public:
void setPos(const PythonQtValueStoragePosition& pos) {
if (_chunkIdx > pos.chunkIdx) {
T* firstChunk = _chunks.at(pos.chunkIdx);
// clear region in first chunk
for (int i = pos.chunkOffset; i < chunkEntries; i++) {
firstChunk[i] = T();
}
for (int chunk = pos.chunkIdx + 1; chunk < _chunkIdx; chunk++) {
// clear the full chunks between the first and last chunk
T* fullChunk = _chunks.at(chunk);
for (int i = 0; i < chunkEntries; i++) {
fullChunk[i] = T();
}
}
// clear region in last chunk
T* lastChunk = _chunks.at(_chunkIdx);
for (int i = 0; i < _chunkOffset; i++) {
lastChunk[i] = T();
}
} else if (_chunkIdx == pos.chunkIdx) {
// clear the region in the last chunk only
T* lastChunk = _chunks.at(_chunkIdx);
for (int i = pos.chunkOffset; i<_chunkOffset; i++) {
lastChunk[i] = T();
}
}
PythonQtValueStorage<T, chunkEntries>::setPos(pos);
}
private:
using PythonQtValueStorage<T, chunkEntries>::_chunks;
using PythonQtValueStorage<T, chunkEntries>::_chunkIdx;
using PythonQtValueStorage<T, chunkEntries>::_chunkOffset;
using PythonQtValueStorage<T, chunkEntries>::_currentChunk;
};
#endif
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