q5sys review:

- Menu > View > reword last entry to "Fit to Window"
- Double Click : Toggle between Normal size and Fit Graphics View
- Scroll Wheel : zoom in = down / zoom out = up
- Ctrl + Scroll Wheel : next image = down / previous image = up

5 files changed, 72 insertions, 3 deletions

diff --git a/src-qt5/desktop-utils/lumina-photo/PhotoView.cpp b/src-qt5/desktop-utils/lumina-photo/PhotoView.cpp
index def476b5..718edf99 100644
--- a/src-qt5/desktop-utils/lumina-photo/PhotoView.cpp
+++ b/src-qt5/desktop-utils/lumina-photo/PhotoView.cpp
@@ -1,5 +1,7 @@
 
 #include "PhotoView.h"
+#include <QDebug>
+#include <QWheelEvent>
 
 PhotoView::PhotoView (QWidget *parent) : QGraphicsView (parent)
 {
@@ -12,19 +14,68 @@ PhotoView::PhotoView (QWidget *parent) : QGraphicsView (parent)
 void PhotoView::zoomIn ()
 {
     scale (scaleFactor, scaleFactor);
+    isFit = false;
 }
 
 void PhotoView::zoomOut ()
 {
     scale (invScaleFactor, invScaleFactor);
+    isFit = false;
 }
 
 void PhotoView::zoomNormal ()
 {
     resetMatrix ();
+    isFit = false;
 }
 
 void PhotoView::zoomFit ()
 {
     fitInView (sceneRect (), Qt::KeepAspectRatio);
+    isFit = true;
+}
+
+bool PhotoView::eventFilter (QObject *, QEvent *event)
+{
+    if (event->type () == QEvent::Wheel)
+    {
+        QWheelEvent *wheel_event = static_cast<QWheelEvent *> (event);
+        if (wheel_event->delta () > 0)
+        {
+            if (wheel_event->modifiers () == Qt::ControlModifier)
+            {
+                emit nextImage ();
+            }
+            else
+            {
+                scale (scaleFactor, scaleFactor);
+                return true;
+            }
+        }
+        else if (wheel_event->delta () < 0)
+        {
+            if (wheel_event->modifiers () == Qt::ControlModifier)
+            {
+                emit prevImage ();
+            }
+            else
+            {
+                scale (invScaleFactor, invScaleFactor);
+                return true;
+            }
+        }
+    }
+
+    return false;
+}
+
+void PhotoView::mouseDoubleClickEvent (QMouseEvent *event)
+{
+    if (event->button () == Qt::LeftButton)
+    {
+        if (isFit)
+            zoomNormal ();
+        else
+            zoomFit ();
+    }
 }
diff --git a/src-qt5/desktop-utils/lumina-photo/PhotoView.h b/src-qt5/desktop-utils/lumina-photo/PhotoView.h
index 521e705d..a04a70d0 100644
--- a/src-qt5/desktop-utils/lumina-photo/PhotoView.h
+++ b/src-qt5/desktop-utils/lumina-photo/PhotoView.h
@@ -1,6 +1,7 @@
 #pragma once
 
 #include <QGraphicsView>
+#include <QEvent>
 
 class PhotoView : public QGraphicsView
 {
@@ -15,4 +16,11 @@ class PhotoView : public QGraphicsView
     private:
         const double scaleFactor = 1.25;
         const double invScaleFactor = 1 / 1.25;
+        bool eventFilter(QObject *, QEvent *event);
+        void mouseDoubleClickEvent(QMouseEvent *event);
+        bool isFit = true;
+
+    signals:
+        void nextImage();
+        void prevImage();
 };
diff --git a/src-qt5/desktop-utils/lumina-photo/mainUI.cpp b/src-qt5/desktop-utils/lumina-photo/mainUI.cpp
index 781e8d0b..b6b468c2 100644
--- a/src-qt5/desktop-utils/lumina-photo/mainUI.cpp
+++ b/src-qt5/desktop-utils/lumina-photo/mainUI.cpp
@@ -72,6 +72,8 @@ void MainUI::setupConnections ()
     connect (ui->actionBack, SIGNAL (triggered ()), this, SLOT (backToggled ()));
     connect (ui->actionFirst, SIGNAL (triggered ()), this, SLOT (firstToggled ()));
     connect (ui->actionLast, SIGNAL (triggered ()), this, SLOT (lastToggled ()));
+    connect (ui->photoView, SIGNAL (nextImage ()), this, SLOT (nextToggled ()));
+    connect (ui->photoView, SIGNAL (prevImage ()), this, SLOT (backToggled ()));
 }
 
 void MainUI::setupIcons ()
@@ -99,6 +101,8 @@ void MainUI::setupFilters ()
 
     mimeTypeFiltersWriter.sort ();
 }
+
+
 // ==== PRIVATE SLOTS ====
 void MainUI::fitZoomToggled ()
 {
diff --git a/src-qt5/desktop-utils/lumina-photo/mainUI.h b/src-qt5/desktop-utils/lumina-photo/mainUI.h
index 27464183..610ec3f2 100644
--- a/src-qt5/desktop-utils/lumina-photo/mainUI.h
+++ b/src-qt5/desktop-utils/lumina-photo/mainUI.h
@@ -52,7 +52,7 @@ private:
     QString pfilter; //previous filter
     QSettings *settings;
 
-    private slots:
+private slots:
     void open ();
     bool save();
     void print();
diff --git a/src-qt5/desktop-utils/lumina-photo/mainUI.ui b/src-qt5/desktop-utils/lumina-photo/mainUI.ui
index 1f992b57..d622050a 100644
--- a/src-qt5/desktop-utils/lumina-photo/mainUI.ui
+++ b/src-qt5/desktop-utils/lumina-photo/mainUI.ui
@@ -26,7 +26,7 @@
      <x>0</x>
      <y>0</y>
      <width>524</width>
-     <height>20</height>
+     <height>22</height>
     </rect>
    </property>
    <widget class="QMenu" name="menuFile">
@@ -148,7 +148,13 @@
   </action>
   <action name="action_Fit_to_windows">
    <property name="text">
-    <string>&amp;Fit to windows</string>
+    <string>&amp;Fit to Windows</string>
+   </property>
+   <property name="iconText">
+    <string>Fit to Windows</string>
+   </property>
+   <property name="toolTip">
+    <string>Fit to Windows</string>
    </property>
   </action>
   <action name="action_About">