mirror of https://github.com/qTox/qTox.git
Anthony Bilinski
5 years ago
7 changed files with 320 additions and 78 deletions
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/*
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Copyright © 2020 by The qTox Project Contributors |
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This file is part of qTox, a Qt-based graphical interface for Tox. |
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qTox is libre 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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qTox 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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You should have received a copy of the GNU General Public License |
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along with qTox. If not, see <http://www.gnu.org/licenses/>.
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*/ |
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#include "exiftransform.h" |
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#include <libexif/exif-loader.h> |
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#include <QDebug> |
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namespace ExifTransform |
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{ |
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Orientation getOrientation(QByteArray imageData) |
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{ |
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auto data = imageData.constData(); |
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auto size = imageData.size(); |
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ExifData* exifData = exif_data_new_from_data(reinterpret_cast<const unsigned char*>(data), size); |
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if (!exifData) { |
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return Orientation::TopLeft; |
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} |
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int orientation = 0; |
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const ExifByteOrder byteOrder = exif_data_get_byte_order(exifData); |
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const ExifEntry* const exifEntry = exif_data_get_entry(exifData, EXIF_TAG_ORIENTATION); |
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if (exifEntry) { |
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orientation = exif_get_short(exifEntry->data, byteOrder); |
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} |
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exif_data_free(exifData); |
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switch (orientation){ |
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case 1: |
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return Orientation::TopLeft; |
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case 2: |
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return Orientation::TopRight; |
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case 3: |
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return Orientation::BottomRight; |
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case 4: |
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return Orientation::BottomLeft; |
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case 5: |
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return Orientation::LeftTop; |
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case 6: |
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return Orientation::RightTop; |
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case 7: |
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return Orientation::RightBottom; |
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case 8: |
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return Orientation::LeftBottom; |
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default: |
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qWarning() << "Invalid exif orientation"; |
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return Orientation::TopLeft; |
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} |
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} |
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QImage applyTransformation(QImage image, Orientation orientation) |
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{ |
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QTransform exifTransform; |
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switch (orientation) { |
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case Orientation::TopLeft: |
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break; |
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case Orientation::TopRight: |
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image = image.mirrored(1, 0); |
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break; |
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case Orientation::BottomRight: |
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exifTransform.rotate(180); |
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break; |
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case Orientation::BottomLeft: |
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image = image.mirrored(0, 1); |
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break; |
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case Orientation::LeftTop: |
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exifTransform.rotate(-90); |
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image = image.mirrored(1, 0); |
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break; |
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case Orientation::RightTop: |
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exifTransform.rotate(90); |
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break; |
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case Orientation::RightBottom: |
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exifTransform.rotate(90); |
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image = image.mirrored(1, 0); |
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break; |
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case Orientation::LeftBottom: |
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exifTransform.rotate(-90); |
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break; |
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} |
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image = image.transformed(exifTransform); |
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return image; |
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} |
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}; |
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@ -0,0 +1,45 @@
@@ -0,0 +1,45 @@
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/*
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Copyright © 2020 by The qTox Project Contributors |
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|
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This file is part of qTox, a Qt-based graphical interface for Tox. |
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|
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qTox is libre 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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qTox 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 qTox. If not, see <http://www.gnu.org/licenses/>.
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*/ |
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#pragma once |
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#include <QPixmap> |
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namespace ExifTransform |
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{ |
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enum class Orientation |
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{ |
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/* name corresponds to where the 0 row and 0 column is in form row-column
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* i.e. entry 5 here means that the 0'th row corresponds to the left side of the scene and |
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* the 0'th column corresponds to the top of the captured scene. This means that the image |
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* needs to be mirrored and rotated to be displayed. |
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*/ |
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TopLeft, |
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TopRight, |
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BottomRight, |
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BottomLeft, |
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LeftTop, |
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RightTop, |
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RightBottom, |
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LeftBottom |
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}; |
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Orientation getOrientation(QByteArray imageData); |
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QImage applyTransformation(QImage image, Orientation orientation); |
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}; |
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@ -0,0 +1,165 @@
@@ -0,0 +1,165 @@
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/*
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Copyright © 2020 by The qTox Project Contributors |
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|
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This file is part of qTox, a Qt-based graphical interface for Tox. |
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|
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qTox is libre 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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qTox 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 qTox. If not, see <http://www.gnu.org/licenses/>.
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*/ |
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#include "src/model/exiftransform.h" |
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#include <QPainter> |
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#include <QTest> |
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static const auto rowColor = QColor(Qt::green).rgb(); |
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static const auto colColor = QColor(Qt::blue).rgb(); |
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enum class Side |
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{ |
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top, |
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bottom, |
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left, |
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right |
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}; |
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static QPoint getPosition(Side side) |
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{ |
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int x, y; |
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switch (side) |
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{ |
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case Side::top: |
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{ |
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x = 1; |
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y = 0; |
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break; |
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} |
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case Side::bottom: |
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{ |
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x = 1; |
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y = 2; |
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break; |
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} |
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case Side::left: |
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{ |
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x = 0; |
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y = 1; |
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break; |
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} |
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case Side::right: |
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{ |
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x = 2; |
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y = 1; |
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break; |
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} |
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} |
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return {x, y}; |
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} |
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static QRgb getColor(const QImage& image, Side side) |
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{ |
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return image.pixel(getPosition(side)); |
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} |
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class TestExifTransform : public QObject |
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{ |
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Q_OBJECT |
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private slots: |
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void init(); |
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void testTopLeft(); |
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void testTopRight(); |
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void testBottomRight(); |
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void testBottomLeft(); |
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void testLeftTop(); |
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void testRightTop(); |
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void testRightBottom(); |
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void testLeftBottom(); |
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private: |
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QImage inputImage; |
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}; |
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void TestExifTransform::init() |
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{ |
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inputImage = QImage(QSize(3, 3), QImage::Format_RGB32); |
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QPainter painter(&inputImage); |
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painter.fillRect(QRect(0, 0, 3, 3), Qt::white); |
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// First row has a green dot in the middle
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painter.setPen(rowColor); |
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painter.drawPoint(getPosition(Side::top)); |
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// First column has a blue dot in the middle
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painter.setPen(colColor); |
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painter.drawPoint(getPosition(Side::left)); |
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} |
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void TestExifTransform::testTopLeft() |
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{ |
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auto image = ExifTransform::applyTransformation(inputImage, ExifTransform::Orientation::TopLeft); |
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QVERIFY(getColor(image, Side::top) == rowColor); |
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QVERIFY(getColor(image, Side::left) == colColor); |
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} |
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void TestExifTransform::testTopRight() |
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{ |
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auto image = ExifTransform::applyTransformation(inputImage, ExifTransform::Orientation::TopRight); |
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QVERIFY(getColor(image, Side::top) == rowColor); |
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QVERIFY(getColor(image, Side::right) == colColor); |
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} |
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void TestExifTransform::testBottomRight() |
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{ |
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auto image = ExifTransform::applyTransformation(inputImage, ExifTransform::Orientation::BottomRight); |
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QVERIFY(getColor(image, Side::bottom) == rowColor); |
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QVERIFY(getColor(image, Side::right) == colColor); |
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} |
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void TestExifTransform::testBottomLeft() |
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{ |
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auto image = ExifTransform::applyTransformation(inputImage, ExifTransform::Orientation::BottomLeft); |
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QVERIFY(getColor(image, Side::bottom) == rowColor); |
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QVERIFY(getColor(image, Side::left) == colColor); |
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} |
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void TestExifTransform::testLeftTop() |
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{ |
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auto image = ExifTransform::applyTransformation(inputImage, ExifTransform::Orientation::LeftTop); |
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QVERIFY(getColor(image, Side::left) == rowColor); |
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QVERIFY(getColor(image, Side::top) == colColor); |
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} |
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void TestExifTransform::testRightTop() |
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{ |
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auto image = ExifTransform::applyTransformation(inputImage, ExifTransform::Orientation::RightTop); |
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QVERIFY(getColor(image, Side::right) == rowColor); |
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QVERIFY(getColor(image, Side::top) == colColor); |
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} |
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void TestExifTransform::testRightBottom() |
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{ |
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auto image = ExifTransform::applyTransformation(inputImage, ExifTransform::Orientation::RightBottom); |
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QVERIFY(getColor(image, Side::right) == rowColor); |
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QVERIFY(getColor(image, Side::bottom) == colColor); |
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} |
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void TestExifTransform::testLeftBottom() |
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{ |
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auto image = ExifTransform::applyTransformation(inputImage, ExifTransform::Orientation::LeftBottom); |
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QVERIFY(getColor(image, Side::left) == rowColor); |
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QVERIFY(getColor(image, Side::bottom) == colColor); |
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} |
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QTEST_APPLESS_MAIN(TestExifTransform) |
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#include "exiftransform_test.moc" |
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