5 files changed, 83 insertions, 1 deletions

diff --git a/dive.c b/dive.c
index 6deee8b08..9a836038d 100644
--- a/dive.c
+++ b/dive.c
@@ -2176,3 +2176,15 @@ void shift_times(const timestamp_t amount)
 		dive->when += amount;
 	}
 }
+
+timestamp_t get_times()
+{
+	int i;
+	struct dive *dive;
+
+	for_each_dive(i, dive) {
+		if (dive->selected)
+			break;
+	}
+	return dive->when;
+}
diff --git a/dive.h b/dive.h
index 6c9a5b566..dd321a7b9 100644
--- a/dive.h
+++ b/dive.h
@@ -722,6 +722,7 @@ extern struct zip *subsurface_zip_open_readonly(const char *path, int flags, int
 extern int subsurface_zip_close(struct zip *zip);
 
 extern void shift_times(const timestamp_t amount);
+extern timestamp_t get_times();
 
 extern xsltStylesheetPtr get_stylesheet(const char *name);
 
diff --git a/qt-ui/shifttimes.ui b/qt-ui/shifttimes.ui
index 55932a2d3..8aaa247ce 100644
--- a/qt-ui/shifttimes.ui
+++ b/qt-ui/shifttimes.ui
@@ -10,7 +10,7 @@
     <x>0</x>
     <y>0</y>
     <width>343</width>
-    <height>177</height>
+    <height>224</height>
    </rect>
   </property>
   <property name="sizePolicy">
@@ -65,6 +65,38 @@
        <number>9</number>
       </property>
       <item>
+       <layout class="QFormLayout" name="formLayout">
+        <item row="2" column="0">
+         <widget class="QLabel" name="shiftedTimeLabel">
+          <property name="text">
+           <string>Shifted time:</string>
+          </property>
+         </widget>
+        </item>
+        <item row="1" column="0">
+         <widget class="QLabel" name="currentTimeLabel">
+          <property name="text">
+           <string>Current time:</string>
+          </property>
+         </widget>
+        </item>
+        <item row="1" column="1">
+         <widget class="QLabel" name="currentTime">
+          <property name="text">
+           <string>0:0</string>
+          </property>
+         </widget>
+        </item>
+        <item row="2" column="1">
+         <widget class="QLabel" name="shiftedTime">
+          <property name="text">
+           <string>0:0</string>
+          </property>
+         </widget>
+        </item>
+       </layout>
+      </item>
+      <item>
        <widget class="QTimeEdit" name="timeEdit">
         <property name="date">
          <date>
@@ -166,5 +198,17 @@
     </hint>
    </hints>
   </connection>
+  <connection>
+   <sender>timeEdit</sender>
+   <signal>timeChanged(const QTime)</signal>
+   <receiver>ShiftTimesDialog</receiver>
+   <slot>changeTime()</slot>
+  </connection>
+  <connection>
+   <sender>backwards</sender>
+   <signal>toggled(bool)</signal>
+   <receiver>ShiftTimesDialog</receiver>
+   <slot>changeTime()</slot>
+  </connection>
  </connections>
 </ui>
diff --git a/qt-ui/simplewidgets.cpp b/qt-ui/simplewidgets.cpp
index 2ec984b7a..be3add815 100644
--- a/qt-ui/simplewidgets.cpp
+++ b/qt-ui/simplewidgets.cpp
@@ -18,6 +18,7 @@
 #include "../dive.h"
 #include "../file.h"
 #include "mainwindow.h"
+#include "helpers.h"
 
 class MinMaxAvgWidgetPrivate {
 public:
@@ -155,10 +156,31 @@ void ShiftTimesDialog::buttonClicked(QAbstractButton *button)
 	}
 }
 
+void ShiftTimesDialog::showEvent(QShowEvent * event)
+{
+	ui.timeEdit->setTime(QTime(0, 0, 0, 0));
+	when = get_times();//get time of first selected dive
+	ui.currentTime->setText(get_dive_date_string(when));
+	ui.shiftedTime->setText(get_dive_date_string(when));
+}
+
+void ShiftTimesDialog::changeTime()
+{
+	int amount;
+
+	amount = ui.timeEdit->time().hour() * 3600 + ui.timeEdit->time().minute() * 60;
+	if (ui.backwards->isChecked())
+		amount *= -1;
+
+	ui.shiftedTime->setText (get_dive_date_string(amount+when));
+}
+
 ShiftTimesDialog::ShiftTimesDialog(QWidget *parent) : QDialog(parent)
 {
 	ui.setupUi(this);
 	connect(ui.buttonBox, SIGNAL(clicked(QAbstractButton *)), this, SLOT(buttonClicked(QAbstractButton *)));
+	connect(ui.timeEdit, SIGNAL(timeChanged(const QTime)), this, SLOT(changeTime()));
+	connect(ui.backwards, SIGNAL(toggled(bool)), this, SLOT(changeTime()));
 }
 
 void ShiftImageTimesDialog::buttonClicked(QAbstractButton *button)
diff --git a/qt-ui/simplewidgets.h b/qt-ui/simplewidgets.h
index 6e4166f35..178dfece8 100644
--- a/qt-ui/simplewidgets.h
+++ b/qt-ui/simplewidgets.h
@@ -52,12 +52,15 @@ class ShiftTimesDialog : public QDialog {
 	Q_OBJECT
 public:
 	static ShiftTimesDialog *instance();
+	void showEvent ( QShowEvent * event );
 private
 slots:
 	void buttonClicked(QAbstractButton *button);
+	void changeTime ();
 
 private:
 	explicit ShiftTimesDialog(QWidget *parent);
+	int64_t when;
 	Ui::ShiftTimesDialog ui;
 };