added preview

cimageviewer.cpp

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+#include "cimageviewer.h"
+#include "ui_cimageviewer.h"
+
+
+cImageViewer::cImageViewer(QWidget *parent) :
+	QDialog(parent),
+	ui(new Ui::cImageViewer)
+{
+	ui->setupUi(this);
+	ui->m_lpImage->setSizePolicy(QSizePolicy::Ignored, QSizePolicy::Ignored);
+}
+
+cImageViewer::~cImageViewer()
+{
+	delete ui;
+}
+
+void cImageViewer::setImage(cImage* lpImage)
+{
+	ui->m_lpImage->setImage(lpImage);
+}

cimageviewer.h

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+#ifndef CIMAGEVIEWER_H
+#define CIMAGEVIEWER_H
+
+
+#include "cimage.h"
+
+#include <QDialog>
+
+
+namespace Ui {
+class cImageViewer;
+}
+
+class cImageViewer : public QDialog
+{
+	Q_OBJECT
+
+public:
+	explicit cImageViewer(QWidget *parent = nullptr);
+	~cImageViewer();
+
+	void					setImage(cImage* lpImage);
+private:
+	Ui::cImageViewer*		ui;
+};
+
+#endif // CIMAGEVIEWER_H

cimageviewer.ui

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+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>cImageViewer</class>
+ <widget class="QDialog" name="cImageViewer">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>400</width>
+    <height>300</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Dialog</string>
+  </property>
+  <layout class="QGridLayout" name="gridLayout">
+   <item row="0" column="0">
+    <widget class="QScrollArea" name="scrollArea">
+     <property name="widgetResizable">
+      <bool>true</bool>
+     </property>
+     <widget class="QWidget" name="scrollAreaWidgetContents">
+      <property name="geometry">
+       <rect>
+        <x>0</x>
+        <y>0</y>
+        <width>380</width>
+        <height>280</height>
+       </rect>
+      </property>
+      <layout class="QGridLayout" name="gridLayout_2">
+       <item row="0" column="0">
+        <widget class="cLabel" name="m_lpImage">
+         <property name="font">
+          <font>
+           <pointsize>20</pointsize>
+          </font>
+         </property>
+         <property name="text">
+          <string>loading...</string>
+         </property>
+         <property name="alignment">
+          <set>Qt::AlignCenter</set>
+         </property>
+        </widget>
+       </item>
+      </layout>
+     </widget>
+    </widget>
+   </item>
+  </layout>
+ </widget>
+ <customwidgets>
+  <customwidget>
+   <class>cLabel</class>
+   <extends>QLabel</extends>
+   <header>clabel.h</header>
+  </customwidget>
+ </customwidgets>
+ <resources/>
+ <connections/>
+</ui>

clabel.cpp

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+#include "clabel.h"
+
+#include <QResizeEvent>
+
+
+cLabel::cLabel(QWidget *parent, Qt::WindowFlags f) :
+	QLabel(parent, f)
+{
+}
+
+cLabel::cLabel(const QString &text, QWidget *parent, Qt::WindowFlags f) :
+	QLabel(text, parent, f)
+{
+}
+
+void cLabel::setImage(cImage* lpImage)
+{
+	m_lpImage	= lpImage;
+}
+
+void cLabel::resizeEvent(QResizeEvent* e)
+{
+	QLabel::resizeEvent(e);
+	setPixmap(QPixmap::fromImage(m_lpImage->scaled(width(), height(), Qt::AspectRatioMode::KeepAspectRatio, Qt::TransformationMode::SmoothTransformation)));
+}

clabel.h

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+#ifndef CLABEL_H
+#define CLABEL_H
+
+
+#include <QLabel>
+
+#include "cimage.h"
+
+
+class cLabel : public QLabel
+{
+public:
+	cLabel(QWidget *parent = nullptr, Qt::WindowFlags f = Qt::WindowFlags());
+	cLabel(const QString &text, QWidget *parent = nullptr, Qt::WindowFlags f = Qt::WindowFlags());
+
+	void				setImage(cImage* lpImage);
+private:
+	cImage*				m_lpImage;
+
+protected:
+	void				resizeEvent(QResizeEvent* e);
+};
+
+#endif // CLABEL_H