aspectRation handling for images, other then images types of downloads, progress fix, labels, context menu to open files

ui/utils/image.cpp

@@ -0,0 +1,52 @@
+/*
+ * Squawk messenger. 
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ * 
+ * This program 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.
+ * 
+ * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <QDebug>
+#include "image.h"
+
+Image::Image(const QString& path, QWidget* parent):
+    QLabel(parent),
+    pixmap(path),
+    aspectRatio(0)
+{
+    
+    qreal height = pixmap.height();
+    qreal width = pixmap.width();
+    aspectRatio = width / height;
+    setPixmap(pixmap);
+    setScaledContents(true);
+    setMinimumHeight(50 / aspectRatio);
+    setMinimumWidth(50);
+}
+
+Image::~Image()
+{
+
+}
+
+int Image::heightForWidth(int width) const
+{
+    int height = width / aspectRatio;
+    //qDebug() << height << width << aspectRatio;
+    return height;
+}
+
+bool Image::hasHeightForWidth() const
+{
+    return true;
+}

ui/utils/image.h

@@ -0,0 +1,61 @@
+/*
+ * Squawk messenger. 
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ * 
+ * This program 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.
+ * 
+ * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef IMAGE_H
+#define IMAGE_H
+
+#include <QLabel>
+#include <QPixmap>
+
+/**
+ * @todo write docs
+ */
+class Image : public QLabel
+{
+public:
+    /**
+     * Default constructor
+     */
+    Image(const QString& path, QWidget* parent = nullptr);
+
+    /**
+     * Destructor
+     */
+    ~Image();
+
+    /**
+     * @todo write docs
+     *
+     * @param  TODO
+     * @return TODO
+     */
+    int heightForWidth(int width) const override;
+
+    /**
+     * @todo write docs
+     *
+     * @return TODO
+     */
+    virtual bool hasHeightForWidth() const;
+    
+private:
+    QPixmap pixmap;
+    qreal aspectRatio;
+};
+
+#endif // IMAGE_H

ui/utils/resizer.cpp

@@ -0,0 +1,34 @@
+/*
+ * Squawk messenger. 
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ * 
+ * This program 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.
+ * 
+ * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "resizer.h"
+
+Resizer::Resizer(QWidget* parent):
+QObject(parent)
+{
+    
+}
+
+bool Resizer::eventFilter(QObject* obj, QEvent* event)
+{
+    if (event->type() == QEvent::Resize) {
+        emit resized();
+    }
+    
+    return false;
+}

ui/utils/resizer.h

@@ -0,0 +1,41 @@
+/*
+ * Squawk messenger. 
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ * 
+ * This program 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.
+ * 
+ * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef RESIZER_H
+#define RESIZER_H
+
+#include <QObject>
+#include <QWidget>
+#include <QEvent>
+
+/**
+ * @todo write docs
+ */
+class Resizer : public QObject {
+    Q_OBJECT
+public:
+    Resizer(QWidget* parent = nullptr);
+    
+protected:
+    bool eventFilter(QObject* obj, QEvent* event) override;
+    
+signals:
+    void resized();
+};
+
+#endif // RESIZER_H