Add current time and adjusted time to gui when adjusting dive's timestamp

This patch adds the current dive time and the adjusted time to the time
shift window. I added a function to dive.c to get the timestamp of the
first selected dive.

This will view the time of the first selected dive only even when multi
dives are selected but it does change the times for multiple dives
properly.

Signed-off-by: Gehad elrobey <gehadelrobey@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

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;
+}

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);
 

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">
@@ -64,6 +64,38 @@
       <property name="bottomMargin">
        <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">
@@ -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>

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)

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;
 };