Add export for depths of images taken

This adds an option to the export dialog to write an ascii file containing
filenames of image files a tab and the depth at the time of the image
taken.

[Dirk Hohndel: whitespace cleanup]

Signed-off-by: Robert C. Helling <helling@atdotde.de>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

3 files changed, 119 insertions, 66 deletions

diff --git a/qt-ui/divelogexportdialog.cpp b/qt-ui/divelogexportdialog.cpp
index 67803eeee..3f9373a4f 100644
--- a/qt-ui/divelogexportdialog.cpp
+++ b/qt-ui/divelogexportdialog.cpp
@@ -74,6 +74,8 @@ void DiveLogExportDialog::showExplanation()
 		ui->description->setText(tr("HTML export of the dive locations, visualized on a world map."));
 	} else if (ui->exportSubsurfaceXML->isChecked()) {
 		ui->description->setText(tr("Subsurface native XML format."));
+	} else if (ui->exportImageDepths->isChecked()) {
+		ui->description->setText(tr("Write depths of images to file."));
 	}
 }
 
@@ -257,6 +259,10 @@ void DiveLogExportDialog::on_buttonBox_accepted()
 				QByteArray bt = QFile::encodeName(filename);
 				save_dives_logic(bt.data(), ui->exportSelected->isChecked());
 			}
+		} else if (ui->exportImageDepths->isChecked()) {
+			filename = QFileDialog::getSaveFileName(this, tr("Save image depths"), lastDir);
+			if (!filename.isNull() && !filename.isEmpty())
+				export_depths(filename.toUtf8().data(), ui->exportSelected->isChecked());
 		}
 		break;
 	case 1:
@@ -278,3 +284,39 @@ void DiveLogExportDialog::on_buttonBox_accepted()
 			export_dives_xslt(filename.toUtf8(), ui->exportSelected->isChecked(), stylesheet.toUtf8());
 	}
 }
+
+void DiveLogExportDialog::export_depths(const char *filename, const bool selected_only)
+{
+	FILE *f;
+	struct dive *dive;
+	depth_t depth;
+	int i;
+	const char **unit;
+
+	struct membuffer buf = { 0 };
+
+	for_each_dive (i, dive) {
+		if (selected_only && !dive->selected)
+			continue;
+
+		FOR_EACH_PICTURE (dive) {
+			int n = dive->dc.samples;
+			struct sample *s = dive->dc.sample;
+			depth.mm = 0;
+			while (--n >= 0 && s->time.seconds <= picture->offset.seconds) {
+				depth.mm = s->depth.mm;
+				s++;
+			}
+			put_format(&buf, "%s\t%.1f%s\n", picture->filename, get_depth_units(depth.mm, NULL, unit), *unit);
+		}
+	}
+
+	f = subsurface_fopen(filename, "w+");
+	if (!f) {
+		report_error(tr("Can't open file %s").toUtf8().data(), filename);
+	} else {
+		flush_buffer(&buf, f); /*check for writing errors? */
+		fclose(f);
+	}
+	free_buffer(&buf);
+}
diff --git a/qt-ui/divelogexportdialog.h b/qt-ui/divelogexportdialog.h
index 8472f8075..0a603ced6 100644
--- a/qt-ui/divelogexportdialog.h
+++ b/qt-ui/divelogexportdialog.h
@@ -33,6 +33,7 @@ private:
 	void exportHTMLsettings(const QString &filename);
 	void exportHTMLstatistics(const QString &filename);
 	void copy_and_overwrite(const QString &fileName, const QString &newName);
+	void export_depths(const char *filename, const bool selected_only);
 };
 
 #endif // DIVELOGEXPORTDIALOG_H
diff --git a/qt-ui/divelogexportdialog.ui b/qt-ui/divelogexportdialog.ui
index 9510b5f6d..b54d2eac6 100644
--- a/qt-ui/divelogexportdialog.ui
+++ b/qt-ui/divelogexportdialog.ui
@@ -29,6 +29,76 @@
        <string>General export</string>
       </attribute>
       <layout class="QGridLayout" name="gridLayout_2">
+       <item row="2" column="0" colspan="2">
+        <widget class="QLabel" name="description">
+         <property name="sizePolicy">
+          <sizepolicy hsizetype="Minimum" vsizetype="Minimum">
+           <horstretch>0</horstretch>
+           <verstretch>0</verstretch>
+          </sizepolicy>
+         </property>
+         <property name="minimumSize">
+          <size>
+           <width>0</width>
+           <height>100</height>
+          </size>
+         </property>
+         <property name="maximumSize">
+          <size>
+           <width>16777215</width>
+           <height>100</height>
+          </size>
+         </property>
+         <property name="text">
+          <string/>
+         </property>
+         <property name="wordWrap">
+          <bool>true</bool>
+         </property>
+        </widget>
+       </item>
+       <item row="3" column="0">
+        <spacer name="verticalSpacer_2">
+         <property name="orientation">
+          <enum>Qt::Vertical</enum>
+         </property>
+         <property name="sizeHint" stdset="0">
+          <size>
+           <width>20</width>
+           <height>40</height>
+          </size>
+         </property>
+        </spacer>
+       </item>
+       <item row="0" column="1">
+        <widget class="QGroupBox" name="exportSelection">
+         <property name="title">
+          <string>Selection</string>
+         </property>
+         <layout class="QVBoxLayout" name="verticalLayout_3">
+          <item>
+           <widget class="QRadioButton" name="exportSelected">
+            <property name="enabled">
+             <bool>true</bool>
+            </property>
+            <property name="text">
+             <string>Selected dives</string>
+            </property>
+            <property name="checked">
+             <bool>true</bool>
+            </property>
+           </widget>
+          </item>
+          <item>
+           <widget class="QRadioButton" name="exportAll">
+            <property name="text">
+             <string>All dives</string>
+            </property>
+           </widget>
+          </item>
+         </layout>
+        </widget>
+       </item>
        <item row="0" column="0">
         <widget class="QGroupBox" name="exportFormat">
          <property name="title">
@@ -103,79 +173,19 @@
             </attribute>
            </widget>
           </item>
-         </layout>
-        </widget>
-       </item>
-       <item row="0" column="1">
-        <widget class="QGroupBox" name="exportSelection">
-         <property name="title">
-          <string>Selection</string>
-         </property>
-         <layout class="QVBoxLayout" name="verticalLayout_3">
-          <item>
-           <widget class="QRadioButton" name="exportSelected">
-            <property name="enabled">
-             <bool>true</bool>
-            </property>
-            <property name="text">
-             <string>Selected dives</string>
-            </property>
-            <property name="checked">
-             <bool>true</bool>
-            </property>
-           </widget>
-          </item>
           <item>
-           <widget class="QRadioButton" name="exportAll">
+           <widget class="QRadioButton" name="exportImageDepths">
             <property name="text">
-             <string>All dives</string>
+             <string>Image depths</string>
             </property>
+            <attribute name="buttonGroup">
+             <string notr="true">exportGroup</string>
+            </attribute>
            </widget>
           </item>
          </layout>
         </widget>
        </item>
-       <item row="1" column="0" colspan="2">
-        <widget class="QLabel" name="description">
-         <property name="sizePolicy">
-          <sizepolicy hsizetype="Minimum" vsizetype="Minimum">
-           <horstretch>0</horstretch>
-           <verstretch>0</verstretch>
-          </sizepolicy>
-         </property>
-         <property name="minimumSize">
-          <size>
-           <width>0</width>
-           <height>100</height>
-          </size>
-         </property>
-         <property name="maximumSize">
-          <size>
-           <width>16777215</width>
-           <height>100</height>
-          </size>
-         </property>
-         <property name="text">
-          <string/>
-         </property>
-         <property name="wordWrap">
-          <bool>true</bool>
-         </property>
-        </widget>
-       </item>
-       <item row="2" column="0">
-        <spacer name="verticalSpacer_2">
-         <property name="orientation">
-          <enum>Qt::Vertical</enum>
-         </property>
-         <property name="sizeHint" stdset="0">
-          <size>
-           <width>20</width>
-           <height>40</height>
-          </size>
-         </property>
-        </spacer>
-       </item>
       </layout>
      </widget>
      <widget class="QWidget" name="HTML_tab">
@@ -420,7 +430,7 @@
   </connection>
  </connections>
  <buttongroups>
-  <buttongroup name="exportGroup"/>
   <buttongroup name="buttonGroup"/>
+  <buttongroup name="exportGroup"/>
  </buttongroups>
 </ui>