Added flip operation

app/Operations/FlipOp.cpp

+/*
+ * Copyright 2011-2012 INSA Rennes
+ *
+ * This file is part of EIImage.
+ *
+ * EIImage is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * EIImage 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with EIImage.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <vector>
+
+#include <Image.h>
+
+#include "ImgWidget.h"
+#include "FlipOp.h"
+
+using namespace std;
+using namespace imagein;
+
+FlipOp::FlipOp(Direction dir)
+    : Operation(QString(tr("Flip %1")).arg(dir == Horizontal ? tr("horizontal") : tr("vertical")).toStdString()), _dir(dir)
+{
+}
+
+bool FlipOp::needCurrentImg() {
+    return true;
+}
+
+std::vector<QWidget*> FlipOp::operator()(const imagein::Image* image, const std::map<const imagein::Image*, std::string>&) {
+    vector<QWidget*> result;
+
+   Image* resImg = new Image(image->getWidth(), image->getHeight(), image->getNbChannels());
+
+    if(_dir == Horizontal) {
+       for(unsigned int c = 0; c < resImg->getNbChannels(); ++c) {
+           for(unsigned int j = 0; j < resImg->getHeight(); ++j) {
+                for(unsigned int i = 0; i < resImg->getWidth(); ++i) {
+                    Image::depth_t value = image->getPixel(image->getWidth() - i - 1, j, c);
+                    resImg->setPixel(i, j, c, value);
+                }
+           }
+       }
+    }
+    else if(_dir == Vertical) {
+       for(unsigned int c = 0; c < resImg->getNbChannels(); ++c) {
+           for(unsigned int j = 0; j < resImg->getHeight(); ++j) {
+                for(unsigned int i = 0; i < resImg->getWidth(); ++i) {
+                    Image::depth_t value = image->getPixel(i, image->getHeight() - j - 1, c);
+                    resImg->setPixel(i, j, c, value);
+                }
+           }
+       }
+    }
+    QString name = QString(tr(" -  flipped %1")).arg(_dir == Horizontal ? tr("horizontal") : tr("vertical"));
+
+    result.push_back(new ImgWidget(resImg, name.toStdString()));
+
+    return result;
+}
+

app/Operations/FlipOp.h

+/*
+ * Copyright 2011-2012 INSA Rennes
+ *
+ * This file is part of EIImage.
+ *
+ * EIImage is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * EIImage 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with EIImage.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef FLIPOP_H
+#define FLIPOP_H
+
+#include <QApplication>
+
+#include <Operation.h>
+#include <Image.h>
+
+class FlipOp : public Operation
+{
+public:
+    enum Direction {Horizontal, Vertical};
+    FlipOp(Direction);
+
+    std::vector<QWidget*> operator()(const imagein::Image*, const std::map<const imagein::Image*, std::string>&);
+
+    static QString tr(const char* str) { return QApplication::tr(str); }
+
+    bool needCurrentImg();
+private:
+    Direction _dir;
+};
+
+#endif // FLIPOP_H