mirror of
https://github.com/riuson/lcd-image-converter.git
synced 2026-03-01 22:04:16 +01:00
154 lines
4.0 KiB
C++
154 lines
4.0 KiB
C++
/*
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* LCD Image Converter. Converts images and fonts for embedded applications.
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* Copyright (C) 2012 riuson
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* mailto: riuson@gmail.com
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/
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*/
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#include "historykeeper.h"
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#include <QDebug>
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#include <QStringList>
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#include <QStringListIterator>
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#include "historyrecord.h"
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namespace Data
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{
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namespace History
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{
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HistoryKeeper::HistoryKeeper(QObject* parent) : QObject(parent)
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{
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this->mHistory = new QList<HistoryRecord*>();
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this->mCurrentIndex = -1;
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}
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HistoryKeeper::~HistoryKeeper()
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{
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qDeleteAll(*this->mHistory);
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this->mHistory->clear();
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}
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void HistoryKeeper::init(const QStringList* keys, const QMap<QString, QImage*>* images,
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const QMap<QString, QVariant>* info)
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{
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// clear all
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this->removeAfter(-1);
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// initialize by current state
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HistoryRecord* record = new HistoryRecord(keys, images, info, this);
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this->mHistory->append(record);
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// first recorded state
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this->mCurrentIndex = 0;
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}
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void HistoryKeeper::store(const QStringList* keys, const QMap<QString, QImage*>* images,
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const QMap<QString, QVariant>* info)
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{
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if (this->mCurrentIndex < 0) {
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qDebug() << "history keeper not initialized";
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return;
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}
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this->removeAfter(this->mCurrentIndex);
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HistoryRecord* record = new HistoryRecord(keys, images, info, this);
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this->mHistory->append(record);
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this->mCurrentIndex++;
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}
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void HistoryKeeper::restorePrevious(QStringList* keys, QMap<QString, QImage*>* images, QMap<QString, QVariant>* info)
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{
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if (this->mCurrentIndex < 0) {
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qDebug() << "history keeper not initialized";
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return;
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}
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if (this->canRestorePrevious()) {
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this->mCurrentIndex--;
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this->restoreAt(this->mCurrentIndex, keys, images, info);
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}
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}
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void HistoryKeeper::restoreNext(QStringList* keys, QMap<QString, QImage*>* images, QMap<QString, QVariant>* info)
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{
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if (this->mCurrentIndex < 0) {
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qDebug() << "history keeper not initialized";
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return;
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}
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if (this->canRestoreNext()) {
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this->mCurrentIndex++;
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this->restoreAt(this->mCurrentIndex, keys, images, info);
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}
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}
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bool HistoryKeeper::initialized() const { return (this->mCurrentIndex >= 0); }
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bool HistoryKeeper::canRestorePrevious() const { return (this->mCurrentIndex > 0); }
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bool HistoryKeeper::canRestoreNext() const { return (this->mCurrentIndex < (this->mHistory->length() - 1)); }
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void HistoryKeeper::removeAfter(int index)
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{
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if (index < -1) {
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index = -1;
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}
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for (int i = this->mHistory->length() - 1; i > index; i--) {
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HistoryRecord* record = this->mHistory->at(i);
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this->mHistory->removeAt(i);
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delete record;
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}
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}
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void HistoryKeeper::restoreAt(int index, QStringList* keys, QMap<QString, QImage*>* images,
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QMap<QString, QVariant>* info)
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{
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HistoryRecord* record = this->mHistory->at(index);
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qDeleteAll(*images);
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keys->clear();
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images->clear();
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info->clear();
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keys->append(*record->keys());
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QStringListIterator iterator(*keys);
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while (iterator.hasNext()) {
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QString key = iterator.next();
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QImage* oldImage = record->images()->value(key);
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QImage* newImage = new QImage(*oldImage);
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images->insert(key, newImage);
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}
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iterator = QStringListIterator(record->info()->keys());
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while (iterator.hasNext()) {
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QString key = iterator.next();
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QVariant value = record->info()->value(key);
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info->insert(key, value);
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}
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}
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} // namespace History
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} // namespace Data
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