Localization update

This reverts commit ba9319d7f6.

README.md

@@ -1,4 +1,29 @@
 # GPXSee
-GPX viewer and analyzer
+GPX viewer and analyzer.
 
-GPXSee Web page: http://tumic.wz.cz/gpxsee
+* User-definable map sources.
+* Track and elevation/speed graphs.
+* Support for multiple tracks in one view.
+* Support for POI files (Garmin CSV format).
+* Export to PDF.
+* Native GUI for Windows, Mac OS X and Linux.
+
+## Build
+### Linux/OS X
+```shell
+lrelease gpxsee.pro
+qmake gpxsee.pro
+make
+```
+### Windows
+```shell
+lrelease gpxsee.pro
+qmake gpxsee.pro
+nmake release
+```
+
+## Binaries
+Available at Sourceforge: http://sourceforge.net/projects/gpxsee
+
+## Homepage
+GPXSee homepage: http://tumic.wz.cz/gpxsee

gpxsee.nsi

@@ -63,7 +63,7 @@ Section "GPXSee (required)" SEC_APP
   ; Write the uninstall keys for Windows
   WriteRegStr HKCU "${REGENTRY}" "DisplayName" "GPXSee"
   WriteRegStr HKCU "${REGENTRY}" "Publisher" "Martin Tuma"
-  WriteRegStr HKCU "${REGENTRY}" "DisplayVersion" "1.1"
+  WriteRegStr HKCU "${REGENTRY}" "DisplayVersion" "2.5"
   WriteRegStr HKCU "${REGENTRY}" "UninstallString" '"$INSTDIR\uninstall.exe"'
   WriteRegDWORD HKCU "${REGENTRY}" "NoModify" 1
   WriteRegDWORD HKCU "${REGENTRY}" "NoRepair" 1
@@ -84,8 +84,10 @@ Section "QT libs" SEC_QT
   File "Qt5Gui.dll"
   File "Qt5Widgets.dll"
   File "Qt5PrintSupport.dll"
+  File "Qt5Network.dll"
   File "libGLESv2.dll"
   File /r "platforms"
+  File /r "imageformats"
  
 SectionEnd
 

gpxsee.pro

@@ -1,6 +1,7 @@
 TARGET = GPXSee
 QT += core \
-	gui
+    gui \
+    network
 greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
 greaterThan(QT_MAJOR_VERSION, 4): QT += printsupport
 HEADERS += src/config.h \
@@ -23,7 +24,11 @@ HEADERS += src/config.h \
     src/elevationgraph.h \
     src/speedgraph.h \
     src/sliderinfoitem.h \
-    src/filebrowser.h
+    src/filebrowser.h \
+    src/map.h \
+    src/maplist.h \
+    src/downloader.h \
+    src/units.h
 SOURCES += src/main.cpp \
     src/gui.cpp \
     src/gpx.cpp \
@@ -41,7 +46,10 @@ SOURCES += src/main.cpp \
     src/elevationgraph.cpp \
     src/speedgraph.cpp \
     src/sliderinfoitem.cpp \
-    src/filebrowser.cpp
+    src/filebrowser.cpp \
+    src/map.cpp \
+    src/maplist.cpp \
+    src/downloader.cpp
 RESOURCES += gpxsee.qrc
 TRANSLATIONS = lang/gpxsee_cs.ts
 macx:ICON = icons/gpxsee.icns

gpxsee.qrc

@@ -7,7 +7,12 @@
         <file>icons/flag.png</file>
         <file>icons/gpxsee.png</file>
         <file>icons/application-exit.png</file>
+        <file>icons/applications-internet.png</file>
         <file>icons/view-refresh.png</file>
+        <file>icons/arrow-left.png</file>
+        <file>icons/arrow-right.png</file>
+        <file>icons/arrow-left-double.png</file>
+        <file>icons/arrow-right-double.png</file>
         <file>lang/gpxsee_cs.qm</file>
     </qresource>
 </RCC>

lang/gpxsee_cs.ts

@@ -4,42 +4,54 @@
 <context>
     <name>ElevationGraph</name>
     <message>
-        <location filename="../src/elevationgraph.cpp" line="12"/>
+        <location filename="../src/elevationgraph.cpp" line="13"/>
         <source>Distance</source>
         <translation>Vzdálenost</translation>
     </message>
     <message>
-        <location filename="../src/elevationgraph.cpp" line="13"/>
+        <location filename="../src/elevationgraph.cpp" line="14"/>
         <source>Elevation</source>
         <translation>Výška</translation>
     </message>
     <message>
-        <location filename="../src/elevationgraph.cpp" line="14"/>
+        <location filename="../src/elevationgraph.cpp" line="15"/>
+        <location filename="../src/elevationgraph.cpp" line="81"/>
         <source>km</source>
         <translation>km</translation>
     </message>
     <message>
-        <location filename="../src/elevationgraph.cpp" line="15"/>
+        <location filename="../src/elevationgraph.cpp" line="16"/>
+        <location filename="../src/elevationgraph.cpp" line="82"/>
         <source>m</source>
         <translation>m</translation>
     </message>
     <message>
-        <location filename="../src/elevationgraph.cpp" line="51"/>
+        <location filename="../src/elevationgraph.cpp" line="22"/>
         <source>Ascent</source>
         <translation>Stoupání</translation>
     </message>
     <message>
-        <location filename="../src/elevationgraph.cpp" line="53"/>
+        <location filename="../src/elevationgraph.cpp" line="24"/>
         <source>Descent</source>
         <translation>Klesání</translation>
     </message>
     <message>
-        <location filename="../src/elevationgraph.cpp" line="57"/>
+        <location filename="../src/elevationgraph.cpp" line="28"/>
         <source>Minimum</source>
         <translation>Minimum</translation>
     </message>
     <message>
-        <location filename="../src/elevationgraph.cpp" line="55"/>
+        <location filename="../src/elevationgraph.cpp" line="86"/>
+        <source>mi</source>
+        <translation>mi</translation>
+    </message>
+    <message>
+        <location filename="../src/elevationgraph.cpp" line="87"/>
+        <source>ft</source>
+        <translation>ft</translation>
+    </message>
+    <message>
+        <location filename="../src/elevationgraph.cpp" line="26"/>
         <source>Maximum</source>
         <translation>Maximum</translation>
     </message>
@@ -47,255 +59,375 @@
 <context>
     <name>GUI</name>
     <message>
-        <location filename="../src/gui.cpp" line="90"/>
+        <location filename="../src/gui.cpp" line="137"/>
         <source>About Qt</source>
         <translation>O Qt</translation>
     </message>
     <message>
-        <location filename="../src/gui.cpp" line="217"/>
+        <location filename="../src/gui.cpp" line="339"/>
         <source>GPXSee is distributed under the terms of the GNU General Public License version 3. For more info about GPXSee visit the project homepage at </source>
         <translation>Program GPXSee je distribuován pod podmínkami licence GNU General Public License verze 3. Pro více informací navštivte stránky programu na adrese </translation>
     </message>
     <message>
-        <location filename="../src/gui.cpp" line="247"/>
+        <location filename="../src/gui.cpp" line="400"/>
         <source>Open file</source>
         <translation>Otevřít soubor</translation>
     </message>
     <message>
-        <location filename="../src/gui.cpp" line="104"/>
+        <location filename="../src/gui.cpp" line="151"/>
         <source>Save as</source>
         <translation>Uložit jako</translation>
     </message>
     <message>
-        <location filename="../src/gui.cpp" line="293"/>
+        <location filename="../src/gui.cpp" line="455"/>
         <source>Open POI file</source>
         <translation>Otevřít POI soubor</translation>
     </message>
     <message>
-        <location filename="../src/gui.cpp" line="95"/>
+        <location filename="../src/gui.cpp" line="142"/>
         <source>Open</source>
         <translation>Otevřít</translation>
     </message>
     <message>
-        <location filename="../src/gui.cpp" line="80"/>
+        <location filename="../src/gui.cpp" line="125"/>
         <source>Quit</source>
         <translation>Ukončit</translation>
     </message>
     <message>
-        <location filename="../src/gui.cpp" line="85"/>
-        <location filename="../src/gui.cpp" line="233"/>
-        <location filename="../src/gui.cpp" line="234"/>
+        <location filename="../src/gui.cpp" line="132"/>
+        <location filename="../src/gui.cpp" line="355"/>
+        <location filename="../src/gui.cpp" line="356"/>
         <source>Keyboard controls</source>
         <translation>Ovládací klávesy</translation>
     </message>
     <message>
-        <location filename="../src/gui.cpp" line="99"/>
+        <location filename="../src/gui.cpp" line="146"/>
         <source>Save</source>
         <translation>Uložit</translation>
     </message>
     <message>
-        <location filename="../src/gui.cpp" line="109"/>
+        <location filename="../src/gui.cpp" line="156"/>
         <source>Close</source>
         <translation>Zavřít</translation>
     </message>
     <message>
-        <location filename="../src/gui.cpp" line="114"/>
+        <location filename="../src/gui.cpp" line="161"/>
         <source>Reload</source>
         <translation>Znovu načíst</translation>
     </message>
     <message>
-        <location filename="../src/gui.cpp" line="121"/>
-        <source>Load file</source>
-        <translation>Nahrát soubor</translation>
-    </message>
-    <message>
-        <location filename="../src/gui.cpp" line="124"/>
+        <location filename="../src/gui.cpp" line="279"/>
         <source>Show</source>
         <translation>Zobrazit</translation>
     </message>
     <message>
-        <location filename="../src/gui.cpp" line="131"/>
-        <location filename="../src/gui.cpp" line="158"/>
+        <location filename="../src/gui.cpp" line="229"/>
+        <location filename="../src/gui.cpp" line="270"/>
         <source>File</source>
         <translation>Soubor</translation>
     </message>
     <message>
-        <location filename="../src/gui.cpp" line="145"/>
-        <location filename="../src/gui.cpp" line="167"/>
+        <location filename="../src/gui.cpp" line="130"/>
+        <location filename="../src/gui.cpp" line="373"/>
+        <location filename="../src/gui.cpp" line="374"/>
+        <source>Data sources</source>
+        <translation>Zdroje dat</translation>
+    </message>
+    <message>
+        <location filename="../src/gui.cpp" line="168"/>
+        <source>Load POI file</source>
+        <translation>Nahrát POI soubor</translation>
+    </message>
+    <message>
+        <location filename="../src/gui.cpp" line="171"/>
+        <source>Show POIs</source>
+        <translation>Zobrazit POI</translation>
+    </message>
+    <message>
+        <location filename="../src/gui.cpp" line="176"/>
+        <source>Show map</source>
+        <translation>Zobrazit mapu</translation>
+    </message>
+    <message>
+        <location filename="../src/gui.cpp" line="186"/>
+        <source>Show graphs</source>
+        <translation>Zobrazovat grafy</translation>
+    </message>
+    <message>
+        <location filename="../src/gui.cpp" line="191"/>
+        <source>Show toolbars</source>
+        <translation>Zobrazovat nástrojové lišty</translation>
+    </message>
+    <message>
+        <location filename="../src/gui.cpp" line="198"/>
+        <source>Metric</source>
+        <translation>Metrické</translation>
+    </message>
+    <message>
+        <location filename="../src/gui.cpp" line="204"/>
+        <source>Imperial</source>
+        <translation>Imperiální</translation>
+    </message>
+    <message>
+        <location filename="../src/gui.cpp" line="211"/>
+        <source>Next</source>
+        <translation>Následující</translation>
+    </message>
+    <message>
+        <location filename="../src/gui.cpp" line="214"/>
+        <source>Previous</source>
+        <translation>Předchozí</translation>
+    </message>
+    <message>
+        <location filename="../src/gui.cpp" line="218"/>
+        <source>Last</source>
+        <translation>Poslední</translation>
+    </message>
+    <message>
+        <location filename="../src/gui.cpp" line="221"/>
+        <source>First</source>
+        <translation>První</translation>
+    </message>
+    <message>
+        <location filename="../src/gui.cpp" line="243"/>
+        <source>Map</source>
+        <translation>Mapa</translation>
+    </message>
+    <message>
+        <location filename="../src/gui.cpp" line="248"/>
         <source>POI</source>
         <translation>POI</translation>
     </message>
     <message>
-        <location filename="../src/gui.cpp" line="149"/>
+        <location filename="../src/gui.cpp" line="252"/>
+        <source>Settings</source>
+        <translation>Nastavení</translation>
+    </message>
+    <message>
+        <location filename="../src/gui.cpp" line="253"/>
+        <source>Units</source>
+        <translation>Jednotky</translation>
+    </message>
+    <message>
+        <location filename="../src/gui.cpp" line="260"/>
         <source>Help</source>
         <translation>Nápověda</translation>
     </message>
     <message>
-        <location filename="../src/gui.cpp" line="185"/>
+        <location filename="../src/gui.cpp" line="307"/>
         <source>Elevation</source>
         <translation>Výška</translation>
     </message>
     <message>
-        <location filename="../src/gui.cpp" line="186"/>
+        <location filename="../src/gui.cpp" line="308"/>
         <source>Speed</source>
         <translation>Rychlost</translation>
     </message>
     <message>
-        <location filename="../src/gui.cpp" line="236"/>
+        <location filename="../src/gui.cpp" line="358"/>
         <source>Next file</source>
         <translation>Následující soubor</translation>
     </message>
     <message>
-        <location filename="../src/gui.cpp" line="237"/>
+        <location filename="../src/gui.cpp" line="359"/>
         <source>Previous file</source>
         <translation>Předchozí soubor</translation>
     </message>
     <message>
-        <location filename="../src/gui.cpp" line="239"/>
+        <location filename="../src/gui.cpp" line="361"/>
+        <source>First file</source>
+        <translation>První soubor</translation>
+    </message>
+    <message>
+        <location filename="../src/gui.cpp" line="362"/>
+        <source>Last file</source>
+        <translation>Poslední soubor</translation>
+    </message>
+    <message>
+        <location filename="../src/gui.cpp" line="363"/>
         <source>Append modifier</source>
         <translation>Modifikátor nahradit/přidat</translation>
     </message>
     <message>
-        <location filename="../src/gui.cpp" line="349"/>
+        <location filename="../src/gui.cpp" line="377"/>
+        <source>Map (tiles) source URLs are read on program startup from the following file:</source>
+        <translation>URL mapových zdrojů (dlaždic) jsou načteny při startu programu z následujícího souboru:</translation>
+    </message>
+    <message>
+        <location filename="../src/gui.cpp" line="381"/>
+        <source>The file format is one map entry per line, consisting of the map name and tiles URL delimited by a TAB character. The tile X and Y coordinates are replaced with $x and $y in the URL and the zoom level is replaced with $z. An example map file could look like:</source>
+        <translation>Formát souboru je jeden mapový záznam na řádku, kde mapový záznam sestává ze jména mapy a URL dlaždic navzájem oddělených tabulátorem. Souřadnice dlaždice jsou v URL nahrazeny řetězci $x a $y, úroven přiblížení (zoom) pak řetězcem $z. Příklad:</translation>
+    </message>
+    <message>
+        <location filename="../src/gui.cpp" line="389"/>
+        <source>To make GPXSee load a POI file automatically on startup, add the file to the following directory:</source>
+        <translation>POI soubory, které se mají automaticky nahrát při startu programu jsou načítány z následujícího adresáře:</translation>
+    </message>
+    <message>
+        <location filename="../src/gui.cpp" line="446"/>
+        <location filename="../src/gui.cpp" line="462"/>
+        <source>Line: %1</source>
+        <translation>Řádka: %1</translation>
+    </message>
+    <message>
+        <location filename="../src/gui.cpp" line="509"/>
+        <location filename="../src/gui.cpp" line="629"/>
+        <source>mi</source>
+        <translation>mi</translation>
+    </message>
+    <message>
+        <location filename="../src/gui.cpp" line="512"/>
+        <location filename="../src/gui.cpp" line="514"/>
+        <location filename="../src/gui.cpp" line="516"/>
+        <location filename="../src/gui.cpp" line="518"/>
+        <source>ft</source>
+        <translation>ft</translation>
+    </message>
+    <message>
+        <location filename="../src/gui.cpp" line="515"/>
+        <location filename="../src/gui.cpp" line="527"/>
         <source>Maximum</source>
         <translation>Maximum</translation>
     </message>
     <message>
-        <location filename="../src/gui.cpp" line="351"/>
+        <location filename="../src/gui.cpp" line="517"/>
+        <location filename="../src/gui.cpp" line="529"/>
         <source>Minimum</source>
         <translation>Minimum</translation>
     </message>
     <message>
-        <location filename="../src/gui.cpp" line="88"/>
-        <location filename="../src/gui.cpp" line="213"/>
+        <location filename="../src/gui.cpp" line="135"/>
+        <location filename="../src/gui.cpp" line="335"/>
         <source>About GPXSee</source>
         <translation>O aplikaci GPXSee</translation>
     </message>
     <message>
-        <location filename="../src/gui.cpp" line="215"/>
+        <location filename="../src/gui.cpp" line="286"/>
+        <source>Navigation</source>
+        <translation>Navigace</translation>
+    </message>
+    <message>
+        <location filename="../src/gui.cpp" line="337"/>
         <source>GPX viewer and analyzer</source>
         <translation>Prohlížeč a analyzátor GPX</translation>
     </message>
     <message>
-        <location filename="../src/gui.cpp" line="342"/>
+        <location filename="../src/gui.cpp" line="376"/>
+        <source>Map sources</source>
+        <translation>Mapové zdroje</translation>
+    </message>
+    <message>
+        <location filename="../src/gui.cpp" line="388"/>
+        <source>POIs</source>
+        <translation>POI body</translation>
+    </message>
+    <message>
+        <location filename="../src/gui.cpp" line="508"/>
+        <location filename="../src/gui.cpp" line="520"/>
         <source>Distance</source>
         <translation>Vzdálenost</translation>
     </message>
     <message>
-        <location filename="../src/gui.cpp" line="344"/>
+        <location filename="../src/gui.cpp" line="510"/>
+        <location filename="../src/gui.cpp" line="522"/>
         <source>Time</source>
         <translation>Čas</translation>
     </message>
     <message>
-        <location filename="../src/gui.cpp" line="345"/>
+        <location filename="../src/gui.cpp" line="511"/>
+        <location filename="../src/gui.cpp" line="523"/>
         <source>Ascent</source>
         <translation>Stoupání</translation>
     </message>
     <message>
-        <location filename="../src/gui.cpp" line="346"/>
-        <location filename="../src/gui.cpp" line="348"/>
-        <location filename="../src/gui.cpp" line="350"/>
-        <location filename="../src/gui.cpp" line="352"/>
+        <location filename="../src/gui.cpp" line="524"/>
+        <location filename="../src/gui.cpp" line="526"/>
+        <location filename="../src/gui.cpp" line="528"/>
+        <location filename="../src/gui.cpp" line="530"/>
         <source>m</source>
         <translation>m</translation>
     </message>
     <message>
-        <location filename="../src/gui.cpp" line="347"/>
+        <location filename="../src/gui.cpp" line="513"/>
+        <location filename="../src/gui.cpp" line="525"/>
         <source>Descent</source>
         <translation>Klesání</translation>
     </message>
     <message>
-        <location filename="../src/gui.cpp" line="418"/>
+        <location filename="../src/gui.cpp" line="625"/>
         <source>%1 tracks</source>
         <translation>Počet tras: %1</translation>
     </message>
     <message>
-        <location filename="../src/gui.cpp" line="343"/>
-        <location filename="../src/gui.cpp" line="421"/>
+        <location filename="../src/gui.cpp" line="521"/>
+        <location filename="../src/gui.cpp" line="632"/>
         <source>km</source>
         <translation>km</translation>
     </message>
     <message>
-        <location filename="../src/gui.cpp" line="285"/>
-        <location filename="../src/gui.cpp" line="297"/>
+        <location filename="../src/gui.cpp" line="448"/>
+        <location filename="../src/gui.cpp" line="463"/>
         <source>Error</source>
         <translation>Chyba</translation>
     </message>
     <message>
-        <location filename="../src/gui.cpp" line="286"/>
+        <location filename="../src/gui.cpp" line="443"/>
         <source>Error loading GPX file:
 %1</source>
         <translation>Soubor GPX nelze otevřít:
 %1</translation>
     </message>
     <message>
-        <location filename="../src/gui.cpp" line="298"/>
+        <location filename="../src/gui.cpp" line="459"/>
         <source>Error loading POI file:
 %1</source>
         <translation>Soubor POI nelze otevřít:
 %1</translation>
     </message>
 </context>
-<context>
-    <name>QObject</name>
-    <message>
-        <location filename="../src/parser.cpp" line="97"/>
-        <source>Not a GPX file.</source>
-        <translation>Neplatný GPX soubor.</translation>
-    </message>
-    <message>
-        <location filename="../src/parser.cpp" line="106"/>
-        <source>%1
-Line %2</source>
-        <translation>%1
-Rádka %2</translation>
-    </message>
-    <message>
-        <location filename="../src/poi.cpp" line="31"/>
-        <source>Invalid latitude
-Line %1</source>
-        <translation>Neplatná zeměpisná šířka
-Rádka %1</translation>
-    </message>
-    <message>
-        <location filename="../src/poi.cpp" line="36"/>
-        <source>Invalid longitude
-Line %1</source>
-        <translation>Neplatná zeměpisná délka
-Rádka %1</translation>
-    </message>
-</context>
 <context>
     <name>SpeedGraph</name>
     <message>
-        <location filename="../src/speedgraph.cpp" line="11"/>
+        <location filename="../src/speedgraph.cpp" line="9"/>
         <source>Distance</source>
         <translation>Vzdálenost</translation>
     </message>
     <message>
-        <location filename="../src/speedgraph.cpp" line="12"/>
+        <location filename="../src/speedgraph.cpp" line="10"/>
         <source>Speed</source>
         <translation>Rychlost</translation>
     </message>
     <message>
-        <location filename="../src/speedgraph.cpp" line="13"/>
+        <location filename="../src/speedgraph.cpp" line="11"/>
+        <location filename="../src/speedgraph.cpp" line="70"/>
         <source>km</source>
         <translation></translation>
     </message>
     <message>
-        <location filename="../src/speedgraph.cpp" line="14"/>
+        <location filename="../src/speedgraph.cpp" line="12"/>
+        <location filename="../src/speedgraph.cpp" line="71"/>
         <source>km/h</source>
         <translation>km/h</translation>
     </message>
     <message>
-        <location filename="../src/speedgraph.cpp" line="37"/>
+        <location filename="../src/speedgraph.cpp" line="20"/>
         <source>Average</source>
         <translation>Průměr</translation>
     </message>
     <message>
-        <location filename="../src/speedgraph.cpp" line="39"/>
+        <location filename="../src/speedgraph.cpp" line="22"/>
         <source>Maximum</source>
         <translation>Maximum</translation>
     </message>
+    <message>
+        <location filename="../src/speedgraph.cpp" line="75"/>
+        <source>mi</source>
+        <translation>mi</translation>
+    </message>
+    <message>
+        <location filename="../src/speedgraph.cpp" line="76"/>
+        <source>mi/h</source>
+        <translation>mi/h</translation>
+    </message>
 </context>
 </TS>

src/axisitem.cpp

@@ -3,14 +3,12 @@
 #include "config.h"
 #include "axisitem.h"
 
-#include <QDebug>
 
 #define TICK        6
 #define PADDING     6
 #define XTICKS      15
 #define YTICKS      10
 
-
 struct Label {
 	double min;
 	double max;

src/colorshop.cpp

@@ -1,11 +1,11 @@
 #include "colorshop.h"
 
+
 #define HUE_INIT		0.1f
 #define HUE_INCREMENT	0.62f
 #define SATURATION		0.99f
 #define VALUE			0.99f
 
-
 static unsigned hsv2rgb(float h, float s, float v)
 {
 	unsigned hi;

src/config.h

@@ -3,11 +3,18 @@
 
 #define APP_NAME       "GPXSee"
 #define APP_HOMEPAGE   "http://tumic.wz.cz/gpxsee"
-#define APP_VERSION    "1.1"
+#define APP_VERSION    "2.5"
 
 #define FONT_FAMILY    "Arial"
 #define FONT_SIZE      12
 
-#define THIN_SPACE     QString::fromUtf8("\xE2\x80\x89")
+#if defined(Q_OS_WIN32)
+#define APP_DIR        "GPXSee"
+#else
+#define APP_DIR        ".gpxsee"
+#endif
+#define POI_DIR        APP_DIR"/POI"
+#define TILES_DIR      APP_DIR"/tiles"
+#define MAP_LIST_FILE  APP_DIR"/maps.txt"
 
 #endif /* CONFIG_H */

src/downloader.cpp

@@ -0,0 +1,80 @@
+#include <QFile>
+#include <QFileInfo>
+#include "config.h"
+#include "downloader.h"
+
+
+#if defined(Q_OS_LINUX)
+#define PLATFORM_STR "Linux"
+#elif defined(Q_OS_WIN32)
+#define PLATFORM_STR "Windows"
+#elif defined(Q_OS_MAC)
+#define PLATFORM_STR "OS X"
+#else
+#define PLATFORM_STR "Unknown"
+#endif
+
+#define USER_AGENT APP_NAME"/"APP_VERSION" ("PLATFORM_STR"; Qt "QT_VERSION_STR")"
+
+Downloader::Downloader()
+{
+	connect(&_manager, SIGNAL(finished(QNetworkReply*)),
+			SLOT(downloadFinished(QNetworkReply*)));
+}
+
+void Downloader::doDownload(const Download &dl)
+{
+	QUrl url(dl.url());
+
+	if (_errorDownloads.contains(url))
+		return;
+
+	QNetworkRequest request(url);
+	request.setAttribute(QNetworkRequest::User, QVariant(dl.file()));
+	request.setRawHeader("User-Agent", USER_AGENT);
+	QNetworkReply *reply = _manager.get(request);
+
+	_currentDownloads.append(reply);
+}
+
+bool Downloader::saveToDisk(const QString &filename, QIODevice *data)
+{
+	QFile file(filename);
+
+	if (!file.open(QIODevice::WriteOnly)) {
+		fprintf(stderr, "Error writing map tile: %s: %s\n",
+		  qPrintable(filename), qPrintable(file.errorString()));
+		return false;
+	}
+
+	file.write(data->readAll());
+	file.close();
+
+	return true;
+}
+
+void Downloader::downloadFinished(QNetworkReply *reply)
+{
+	QUrl url = reply->url();
+	if (reply->error()) {
+		_errorDownloads.insert(url);
+		fprintf(stderr, "Error downloading map tile: %s: %s\n",
+		  url.toEncoded().constData(), qPrintable(reply->errorString()));
+	} else {
+		QString filename = reply->request().attribute(QNetworkRequest::User)
+		  .toString();
+		saveToDisk(filename, reply);
+	}
+
+	_currentDownloads.removeAll(reply);
+	reply->deleteLater();
+
+	if (_currentDownloads.isEmpty())
+		emit finished();
+}
+
+void Downloader::get(const QList<Download> &list)
+{
+	for (int i = 0; i < list.count(); i++)
+		doDownload(list.at(i));
+}

src/downloader.h

@@ -0,0 +1,54 @@
+#ifndef DOWNLOADER_H
+#define DOWNLOADER_H
+
+#include <QNetworkAccessManager>
+#include <QNetworkRequest>
+#include <QNetworkReply>
+#include <QUrl>
+#include <QList>
+#include <QSet>
+
+
+class Download
+{
+public:
+	Download(const QString &url, const QString &file)
+		{_url = url; _file = file;}
+	const QString& url() const {return _url;}
+	const QString& file() const {return _file;}
+
+private:
+	QString _url;
+	QString _file;
+};
+
+
+class Downloader : public QObject
+{
+	Q_OBJECT
+
+public:
+	static Downloader& instance()
+		{static Downloader i; return i;}
+	void get(const QList<Download> &list);
+
+signals:
+	void finished();
+
+private slots:
+	void downloadFinished(QNetworkReply *reply);
+
+private:
+	Downloader();
+	Downloader(Downloader const&);
+	void operator=(Downloader const&);
+
+	void doDownload(const Download &dl);
+	bool saveToDisk(const QString &filename, QIODevice *data);
+
+	QNetworkAccessManager _manager;
+	QList<QNetworkReply *> _currentDownloads;
+	QSet<QUrl> _errorDownloads;
+};
+
+#endif // DOWNLOADER_H

src/elevationgraph.cpp

@@ -2,6 +2,7 @@
 #include "config.h"
 #include "elevationgraph.h"
 
+
 ElevationGraph::ElevationGraph(QWidget *parent) : Graph(parent)
 {
 	_ascent = 0;
@@ -13,7 +14,19 @@ ElevationGraph::ElevationGraph(QWidget *parent) : Graph(parent)
 	Graph::setYLabel(tr("Elevation"));
 	Graph::setXUnits(tr("km"));
 	Graph::setYUnits(tr("m"));
-	Graph::setXScale(0.001);
+	Graph::setXScale(M2KM);
+}
+
+void ElevationGraph::addInfo()
+{
+	Graph::addInfo(tr("Ascent"), QString::number(_ascent * _yScale, 'f', 0)
+	  + THIN_SPACE + _yUnits);
+	Graph::addInfo(tr("Descent"), QString::number(_descent * _yScale, 'f', 0)
+	  + THIN_SPACE + _yUnits);
+	Graph::addInfo(tr("Maximum"), QString::number(_max * _yScale, 'f', 0)
+	  + THIN_SPACE + _yUnits);
+	Graph::addInfo(tr("Minimum"), QString::number(_min * _yScale, 'f', 0)
+	  + THIN_SPACE + _yUnits);
 }
 
 void ElevationGraph::loadGPX(const GPX &gpx)
@@ -48,16 +61,8 @@ void ElevationGraph::loadGPX(const GPX &gpx)
 	_max = qMax(_max, max);
 	_min = qMin(_min, min);
 
-	addInfo(tr("Ascent"), QString::number(_ascent, 'f', 0)
-	  + THIN_SPACE + _yUnits);
-	addInfo(tr("Descent"), QString::number(_descent, 'f', 0)
-	  + THIN_SPACE + _yUnits);
-	addInfo(tr("Maximum"), QString::number(_max, 'f', 0)
-	  + THIN_SPACE + _yUnits);
-	addInfo(tr("Minimum"), QString::number(_min, 'f', 0)
-	  + THIN_SPACE + _yUnits);
-
-	Graph::loadData(data);
+	addInfo();
+	loadData(data);
 }
 
 void ElevationGraph::clear()
@@ -69,3 +74,23 @@ void ElevationGraph::clear()
 
 	Graph::clear();
 }
+
+void ElevationGraph::setUnits(enum Units units)
+{
+	if (units == Metric) {
+		Graph::setXUnits(tr("km"));
+		Graph::setYUnits(tr("m"));
+		Graph::setXScale(M2KM);
+		Graph::setYScale(1);
+	} else {
+		Graph::setXUnits(tr("mi"));
+		Graph::setYUnits(tr("ft"));
+		Graph::setXScale(M2MI);
+		Graph::setYScale(M2FT);
+	}
+
+	clearInfo();
+	addInfo();
+
+	redraw();
+}

src/elevationgraph.h

@@ -3,6 +3,7 @@
 
 #include "graph.h"
 #include "gpx.h"
+#include "units.h"
 
 class ElevationGraph : public Graph
 {
@@ -13,6 +14,7 @@ public:
 
 	void loadGPX(const GPX &gpx);
 	void clear();
+	void setUnits(enum Units units);
 
 	qreal ascent() const {return _ascent;}
 	qreal descent() const {return _descent;}
@@ -20,6 +22,8 @@ public:
 	qreal min() const {return _min;}
 
 private:
+	void addInfo();
+
 	qreal _ascent, _descent;
 	qreal _max, _min;
 };

src/filebrowser.cpp

@@ -2,8 +2,6 @@
 #include <QDir>
 #include "filebrowser.h"
 
-#include <QDebug>
-
 
 FileBrowser::FileBrowser(QObject *parent) : QObject(parent)
 {
@@ -43,6 +41,16 @@ void FileBrowser::setFilter(const QStringList &filter)
 		reloadDirectory(_files.last().canonicalPath());
 }
 
+bool FileBrowser::isLast()
+{
+	return (_files.size() > 0 && _index == _files.size() - 1);
+}
+
+bool FileBrowser::isFirst()
+{
+	return (_files.size() > 0 && _index == 0);
+}
+
 QString FileBrowser::next()
 {
 	if (_index < 0 || _index == _files.size() - 1)
@@ -59,6 +67,24 @@ QString FileBrowser::prev()
 	return _files.at(--_index).absoluteFilePath();
 }
 
+QString FileBrowser::last()
+{
+	if (_files.empty())
+		return QString();
+
+	_index = _files.size() - 1;
+	return _files.last().absoluteFilePath();
+}
+
+QString FileBrowser::first()
+{
+	if (_files.empty())
+		return QString();
+
+	_index = 0;
+	return _files.first().absoluteFilePath();
+}
+
 void FileBrowser::reloadDirectory(const QString &path)
 {
 	QDir dir(path);

src/filebrowser.h

@@ -20,6 +20,11 @@ public:
 
 	QString next();
 	QString prev();
+	QString last();
+	QString first();
+
+	bool isLast();
+	bool isFirst();
 
 private slots:
 	void reloadDirectory(const QString &path);

src/gpx.cpp

@@ -3,14 +3,11 @@
 #include "ll.h"
 #include "gpx.h"
 
-#include <QDebug>
-
 
 #define WINDOW_EF 3
 #define WINDOW_SE 11
 #define WINDOW_SF 11
 
-
 static bool lt(const QPointF &p1, const QPointF &p2)
 {
 	return p1.y() < p2.y();
@@ -90,14 +87,17 @@ bool GPX::loadFile(const QString &fileName)
 
 	_data.clear();
 	_error.clear();
+	_errorLine = 0;
 
 	if (!file.open(QFile::ReadOnly | QFile::Text)) {
 		_error = qPrintable(file.errorString());
 		return false;
 	}
 
-	if (!(ret = _parser.loadFile(&file, _data)))
+	if (!(ret = _parser.loadFile(&file, _data))) {
 		_error = _parser.errorString();
+		_errorLine = _parser.errorLine();
+	}
 	file.close();
 
 	return ret;
@@ -150,12 +150,8 @@ void GPX::speedGraph(QVector<QPointF> &graph) const
 
 void GPX::track(QVector<QPointF> &track) const
 {
-	QPointF p;
-
-	for (int i = 0; i < _data.size(); i++) {
-		ll2mercator(_data.at(i).coordinates, p);
-		track.append(p);
-	}
+	for (int i = 0; i < _data.size(); i++)
+		track.append(ll2mercator(_data.at(i).coordinates));
 }
 
 qreal GPX::distance() const

src/gpx.h

@@ -11,6 +11,7 @@ class GPX
 public:
 	bool loadFile(const QString &fileName);
 	const QString &errorString() const {return _error;}
+	int errorLine() const {return _errorLine;}
 
 	void elevationGraph(QVector<QPointF> &graph) const;
 	void speedGraph(QVector<QPointF> &graph) const;
@@ -23,6 +24,7 @@ private:
 	Parser _parser;
 	QVector<TrackPoint> _data;
 	QString _error;
+	int _errorLine;
 };
 
 #endif // GPX_H

src/graph.cpp

@@ -9,12 +9,9 @@
 #include "config.h"
 #include "graph.h"
 
-#include <QDebug>
-
 
 #define MARGIN 10.0
 
-
 void Scene::mousePressEvent(QGraphicsSceneMouseEvent *e)
 {
 	if (e->button() == Qt::LeftButton)
@@ -119,6 +116,16 @@ void Graph::setYUnits(const QString &units)
 	createYLabel();
 }
 
+void Graph::setXScale(qreal scale)
+{
+	_xScale = scale;
+}
+
+void Graph::setYScale(qreal scale)
+{
+	_yScale = scale;
+}
+
 void Graph::loadData(const QVector<QPointF> &data)
 {
 	QPainterPath path;
@@ -146,7 +153,13 @@ void Graph::loadData(const QVector<QPointF> &data)
 	if (_graphs.size() > 1)
 		_sliderInfo->hide();
 
-	resize(viewport()->size() - QSizeF(MARGIN, MARGIN));
+	redraw();
+}
+
+void Graph::redraw()
+{
+	if (!_graphs.isEmpty())
+		resize(viewport()->size() - QSizeF(MARGIN, MARGIN));
 }
 
 void Graph::resize(const QSizeF &size)
@@ -190,10 +203,17 @@ void Graph::resize(const QSizeF &size)
 	_scene->addItem(_xAxis);
 	_scene->addItem(_yAxis);
 
+	qreal sp = (_slider->pos().x() == _slider->area().left())
+		? 0 : (_slider->pos().x() - _slider->area().left())
+		  / _slider->area().width();
 	_slider->setArea(r);
-	_slider->setPos(r.bottomLeft());
+	_slider->setPos(QPointF(sp * r.width(), r.bottom()));
 	_scene->addItem(_slider);
 
+	const QPainterPath &path = _graphs.at(0)->path();
+	QPointF p = path.pointAtPercent(sp);
+	_sliderInfo->setText(QString::number(-p.y() * _yScale, 'f', _precision));
+
 	r = _scene->itemsBoundingRect();
 	_info->setPos(r.topLeft() + QPointF(r.width()/2
 	  - _info->boundingRect().width()/2, -_info->boundingRect().height()));
@@ -205,7 +225,7 @@ void Graph::resize(const QSizeF &size)
 void Graph::resizeEvent(QResizeEvent *)
 {
 	if (!_graphs.empty())
-		resize(viewport()->size() - QSizeF(MARGIN, MARGIN));
+		redraw();
 }
 
 void Graph::plot(QPainter *painter, const QRectF &target)
@@ -237,6 +257,7 @@ void Graph::clear()
 		_scene->removeItem(_info);
 	_sliderInfo->show();
 
+	_slider->clear();
 	_info->clear();
 	_scene->clear();
 	_graphs.clear();
@@ -288,3 +309,8 @@ void Graph::addInfo(const QString &key, const QString &value)
 {
 	_info->insert(key, value);
 }
+
+void Graph::clearInfo()
+{
+	_info->clear();
+}

src/graph.h

@@ -10,6 +10,8 @@
 #include "colorshop.h"
 
 
+#define THIN_SPACE     QString::fromUtf8("\xE2\x80\x89")
+
 class SliderItem;
 class SliderInfoItem;
 class InfoItem;
@@ -39,10 +41,12 @@ public:
 	void setYLabel(const QString &label);
 	void setXUnits(const QString &units);
 	void setYUnits(const QString &units);
-	void setXScale(qreal scale) {_xScale = scale;}
-	void setYScale(qreal scale) {_yScale = scale;}
+	void setXScale(qreal scale);
+	void setYScale(qreal scale);
 	void setPrecision(int p) {_precision = p;}
 
+	void redraw();
+
 	void plot(QPainter *painter, const QRectF &target);
 	void clear();
 
@@ -50,6 +54,7 @@ public:
 	void setSliderPosition(qreal pos);
 
 	void addInfo(const QString &key, const QString &value);
+	void clearInfo();
 
 signals:
 	void sliderPositionChanged(qreal);

src/gui.cpp

@@ -7,10 +7,13 @@
 #include <QPrinter>
 #include <QPainter>
 #include <QKeyEvent>
+#include <QSignalMapper>
 #include "config.h"
 #include "icons.h"
 #include "keys.h"
 #include "gpx.h"
+#include "map.h"
+#include "maplist.h"
 #include "elevationgraph.h"
 #include "speedgraph.h"
 #include "track.h"
@@ -18,8 +21,6 @@
 #include "filebrowser.h"
 #include "gui.h"
 
-#include <QDebug>
-
 
 static QString timeSpan(qreal time)
 {
@@ -30,12 +31,14 @@ static QString timeSpan(qreal time)
 	s = time - (h * 3600) - (m * 60);
 
 	return QString("%1:%2:%3").arg(h).arg(m, 2, 10, QChar('0'))
-	  .arg(s,2, 10, QChar('0'));
+	  .arg(s, 2, 10, QChar('0'));
 }
 
 
 GUI::GUI()
 {
+	loadFiles();
+
 	createActions();
 	createMenus();
 	createToolBars();
@@ -68,6 +71,46 @@ GUI::GUI()
 	resize(600, 800);
 }
 
+void GUI::loadFiles()
+{
+	// Maps
+	_maps = MapList::load(QString("%1/"MAP_LIST_FILE).arg(QDir::homePath()));
+
+	// POI files
+	QDir dir(QString("%1/"POI_DIR).arg(QDir::homePath()));
+	QFileInfoList list = dir.entryInfoList(QStringList(), QDir::Files);
+	for (int i = 0; i < list.size(); ++i) {
+		if (!_poi.loadFile(list.at(i).absoluteFilePath()))
+			fprintf(stderr, "Error loading POI file: %s: %s",
+			  qPrintable(list.at(i).absoluteFilePath()),
+			  qPrintable(_poi.errorString()));
+	}
+}
+
+void GUI::createMapActions()
+{
+	QActionGroup *ag = new QActionGroup(this);
+	ag->setExclusive(true);
+
+	QSignalMapper *sm = new QSignalMapper(this);
+
+	for (int i = 0; i < _maps.count(); i++) {
+		QAction *a = new QAction(_maps.at(i)->name(), this);
+		a->setCheckable(true);
+		a->setActionGroup(ag);
+
+		sm->setMapping(a, i);
+		connect(a, SIGNAL(triggered()), sm, SLOT(map()));
+
+		_mapActions.append(a);
+	}
+
+	connect(sm, SIGNAL(mapped(int)), this, SLOT(mapChanged(int)));
+
+	_mapActions.at(0)->setChecked(true);
+	_currentMap = _maps.at(0);
+}
+
 void GUI::createActions()
 {
 	// Action Groups
@@ -75,6 +118,8 @@ void GUI::createActions()
 	_fileActionGroup->setExclusive(false);
 	_fileActionGroup->setEnabled(false);
 
+	_navigationActionGroup = new QActionGroup(this);
+	_navigationActionGroup->setEnabled(false);
 
 	// General actions
 	_exitAction = new QAction(QIcon(QPixmap(QUIT_ICON)), tr("Quit"), this);
@@ -82,6 +127,8 @@ void GUI::createActions()
 	connect(_exitAction, SIGNAL(triggered()), this, SLOT(close()));
 
 	// Help & About
+	_dataSourcesAction = new QAction(tr("Data sources"), this);
+	connect(_dataSourcesAction, SIGNAL(triggered()), this, SLOT(dataSources()));
 	_keysAction = new QAction(tr("Keyboard controls"), this);
 	connect(_keysAction, SIGNAL(triggered()), this, SLOT(keys()));
 	_aboutAction = new QAction(QIcon(QPixmap(APP_ICON)),
@@ -118,12 +165,63 @@ void GUI::createActions()
 
 	// POI actions
 	_openPOIAction = new QAction(QIcon(QPixmap(OPEN_FILE_ICON)),
-	  tr("Load file"), this);
+	  tr("Load POI file"), this);
 	connect(_openPOIAction, SIGNAL(triggered()), this, SLOT(openPOIFile()));
 	_showPOIAction = new QAction(QIcon(QPixmap(SHOW_POI_ICON)),
-	  tr("Show"), this);
+	  tr("Show POIs"), this);
 	_showPOIAction->setCheckable(true);
-	connect(_showPOIAction, SIGNAL(triggered()), this, SLOT(showPOI()));
+	connect(_showPOIAction, SIGNAL(triggered(bool)), this, SLOT(showPOI(bool)));
+
+	// Map actions
+	_showMapAction = new QAction(QIcon(QPixmap(SHOW_MAP_ICON)), tr("Show map"),
+	  this);
+	_showMapAction->setCheckable(true);
+	connect(_showMapAction, SIGNAL(triggered(bool)), this, SLOT(showMap(bool)));
+	if (_maps.empty())
+		_showMapAction->setEnabled(false);
+	else
+		createMapActions();
+
+	// Settings actions
+	_showGraphsAction = new QAction(tr("Show graphs"), this);
+	_showGraphsAction->setCheckable(true);
+	_showGraphsAction->setChecked(true);
+	connect(_showGraphsAction, SIGNAL(triggered(bool)), this,
+	  SLOT(showGraphs(bool)));
+	_showToolbarsAction = new QAction(tr("Show toolbars"), this);
+	_showToolbarsAction->setCheckable(true);
+	_showToolbarsAction->setChecked(true);
+	connect(_showToolbarsAction, SIGNAL(triggered(bool)), this,
+	  SLOT(showToolbars(bool)));
+	QActionGroup *ag = new QActionGroup(this);
+	ag->setExclusive(true);
+	_metricUnitsAction = new QAction(tr("Metric"), this);
+	_metricUnitsAction->setCheckable(true);
+	_metricUnitsAction->setActionGroup(ag);
+	_metricUnitsAction->setChecked(true);
+	connect(_metricUnitsAction, SIGNAL(triggered()), this,
+	  SLOT(setMetricUnits()));
+	_imperialUnitsAction = new QAction(tr("Imperial"), this);
+	_imperialUnitsAction->setCheckable(true);
+	_imperialUnitsAction->setActionGroup(ag);
+	connect(_imperialUnitsAction, SIGNAL(triggered()), this,
+	  SLOT(setImperialUnits()));
+
+	// Navigation actions
+	_nextAction = new QAction(QIcon(QPixmap(NEXT_FILE_ICON)), tr("Next"), this);
+	_nextAction->setActionGroup(_navigationActionGroup);
+	connect(_nextAction, SIGNAL(triggered()), this, SLOT(next()));
+	_prevAction = new QAction(QIcon(QPixmap(PREV_FILE_ICON)), tr("Previous"),
+	  this);
+	_prevAction->setActionGroup(_navigationActionGroup);
+	connect(_prevAction, SIGNAL(triggered()), this, SLOT(prev()));
+	_lastAction = new QAction(QIcon(QPixmap(LAST_FILE_ICON)), tr("Last"), this);
+	_lastAction->setActionGroup(_navigationActionGroup);
+	connect(_lastAction, SIGNAL(triggered()), this, SLOT(last()));
+	_firstAction = new QAction(QIcon(QPixmap(FIRST_FILE_ICON)), tr("First"),
+	  this);
+	_firstAction->setActionGroup(_navigationActionGroup);
+	connect(_firstAction, SIGNAL(triggered()), this, SLOT(first()));
 }
 
 void GUI::createMenus()
@@ -137,16 +235,30 @@ void GUI::createMenus()
 	_fileMenu->addAction(_reloadFileAction);
 	_fileMenu->addSeparator();
 	_fileMenu->addAction(_closeFileAction);
-#ifndef __APPLE__
+#ifndef Q_OS_MAC
 	_fileMenu->addSeparator();
 	_fileMenu->addAction(_exitAction);
-#endif // __APPLE__
+#endif // Q_OS_MAC
+
+	_mapMenu = menuBar()->addMenu(tr("Map"));
+	_mapMenu->addActions(_mapActions);
+	_mapMenu->addSeparator();
+	_mapMenu->addAction(_showMapAction);
 
 	_poiMenu = menuBar()->addMenu(tr("POI"));
 	_poiMenu->addAction(_openPOIAction);
 	_poiMenu->addAction(_showPOIAction);
 
+	_settingsMenu = menuBar()->addMenu(tr("Settings"));
+	_unitsMenu = _settingsMenu->addMenu(tr("Units"));
+	_unitsMenu->addAction(_metricUnitsAction);
+	_unitsMenu->addAction(_imperialUnitsAction);
+	_settingsMenu->addSeparator();
+	_settingsMenu->addAction(_showToolbarsAction);
+	_settingsMenu->addAction(_showGraphsAction);
+
 	_helpMenu = menuBar()->addMenu(tr("Help"));
+	_helpMenu->addAction(_dataSourcesAction);
 	_helpMenu->addAction(_keysAction);
 	_helpMenu->addSeparator();
 	_helpMenu->addAction(_aboutAction);
@@ -160,15 +272,25 @@ void GUI::createToolBars()
 	_fileToolBar->addAction(_saveFileAction);
 	_fileToolBar->addAction(_reloadFileAction);
 	_fileToolBar->addAction(_closeFileAction);
-#ifdef __APPLE__
+#ifdef Q_OS_MAC
 	_fileToolBar->setToolButtonStyle(Qt::ToolButtonTextUnderIcon);
-#endif // __APPLE__
+#endif // Q_OS_MAC
 
-	_poiToolBar = addToolBar(tr("POI"));
-	_poiToolBar->addAction(_showPOIAction);
-#ifdef __APPLE__
-	_poiToolBar->setToolButtonStyle(Qt::ToolButtonTextUnderIcon);
-#endif // __APPLE__
+	_showToolBar = addToolBar(tr("Show"));
+	_showToolBar->addAction(_showPOIAction);
+	_showToolBar->addAction(_showMapAction);
+#ifdef Q_OS_MAC
+	_showToolBar->setToolButtonStyle(Qt::ToolButtonTextUnderIcon);
+#endif // Q_OS_MAC
+
+	_navigationToolBar = addToolBar(tr("Navigation"));
+	_navigationToolBar->addAction(_firstAction);
+	_navigationToolBar->addAction(_prevAction);
+	_navigationToolBar->addAction(_nextAction);
+	_navigationToolBar->addAction(_lastAction);
+#ifdef Q_OS_MAC
+	_navigationToolBar->setToolButtonStyle(Qt::ToolButtonTextUnderIcon);
+#endif // Q_OS_MAC
 }
 
 void GUI::createTrackView()
@@ -236,8 +358,39 @@ void GUI::keys()
 	  QString("<div><table width=\"300\"><tr><td>") + tr("Next file")
 	  + QString("</td><td><i>SPACE</i></td></tr><tr><td>") + tr("Previous file")
 	  + QString("</td><td><i>BACKSPACE</i></td></tr><tr><td>")
-	  + tr("Append modifier") + QString("</td><td><i>SHIFT</i></td></tr>"
-	  "</table></div>"));
+	  + tr("First file") + QString("</td><td><i>HOME</i></td></tr><tr><td>")
+	  + tr("Last file") + QString("</td><td><i>END</i></td></tr><tr><td></td>"
+	  "<td></td></tr><tr><td>") + tr("Append modifier")
+	  + QString("</td><td><i>SHIFT</i></td></tr></table></div>"));
+
+	msgBox.exec();
+}
+
+void GUI::dataSources()
+{
+	QMessageBox msgBox(this);
+
+	msgBox.setWindowTitle(tr("Data sources"));
+	msgBox.setText(QString("<h3>") + tr("Data sources") + QString("</h3>"));
+	msgBox.setInformativeText(
+	  QString("<h4>") + tr("Map sources") + QString("</h4><p>")
+	  + tr("Map (tiles) source URLs are read on program startup from the "
+		"following file:")
+		+ QString("</p><p><code>") + QDir::homePath()
+		  + QString("/"MAP_LIST_FILE"</code></p><p>")
+		+ tr("The file format is one map entry per line, consisting of the map "
+		  "name and tiles URL delimited by a TAB character. The tile X and Y "
+		  "coordinates are replaced with $x and $y in the URL and the zoom "
+		  "level is replaced with $z. An example map file could look like:")
+		+ QString("</p><p><code>Map1	http://tile.server.com/map/$z/$x/$y.png"
+		  "<br/>Map2	http://mapserver.org/map/$z-$x-$y</code></p>")
+
+	  + QString("<h4>") + tr("POIs") + QString("</h4><p>")
+	  + tr("To make GPXSee load a POI file automatically on startup, add "
+		"the file to the following directory:")
+		+ QString("</p><p><code>") + QDir::homePath()
+		+ QString("/"POI_DIR"</code></p>")
+	);
 
 	msgBox.exec();
 }
@@ -261,9 +414,13 @@ bool GUI::openFile(const QString &fileName)
 		_browser->setCurrent(fileName);
 		updateStatusBarInfo();
 		_fileActionGroup->setEnabled(true);
+		_navigationActionGroup->setEnabled(true);
+		updateNavigationActions();
 		return true;
-	} else
+	} else {
+		updateNavigationActions();
 		return false;
+	}
 }
 
 bool GUI::loadFile(const QString &fileName)
@@ -282,8 +439,13 @@ bool GUI::loadFile(const QString &fileName)
 
 		return true;
 	} else {
-		QMessageBox::critical(this, tr("Error"), fileName + QString("\n\n")
-		  + tr("Error loading GPX file:\n%1").arg(gpx.errorString()));
+		QString error = fileName + QString("\n\n")
+		  + tr("Error loading GPX file:\n%1").arg(gpx.errorString())
+		  + QString("\n");
+		if (gpx.errorLine())
+			error.append(tr("Line: %1").arg(gpx.errorLine()));
+
+		QMessageBox::critical(this, tr("Error"), error);
 		return false;
 	}
 }
@@ -294,8 +456,11 @@ void GUI::openPOIFile()
 
 	if (!fileName.isEmpty()) {
 		if (!_poi.loadFile(fileName)) {
-			QMessageBox::critical(this, tr("Error"),
-			  tr("Error loading POI file:\n%1").arg(_poi.errorString()));
+			QString error = tr("Error loading POI file:\n%1")
+			  .arg(_poi.errorString()) + QString("\n");
+			if (_poi.errorLine())
+				error.append(tr("Line: %1").arg(_poi.errorLine()));
+			QMessageBox::critical(this, tr("Error"), error);
 		} else {
 			_showPOIAction->setChecked(true);
 			_track->loadPOI(_poi);
@@ -339,17 +504,31 @@ void GUI::saveFile(const QString &fileName)
 
 	QGraphicsScene scene;
 	InfoItem info;
-	info.insert(tr("Distance"), QString::number(_distance / 1000, 'f', 1)
-	  + THIN_SPACE + tr("km"));
-	info.insert(tr("Time"), timeSpan(_time));
-	info.insert(tr("Ascent"), QString::number(_elevationGraph->ascent(), 'f', 0)
-	  + THIN_SPACE + tr("m"));
-	info.insert(tr("Descent"), QString::number(_elevationGraph->descent(), 'f',
-	  0) + THIN_SPACE + tr("m"));
-	info.insert(tr("Maximum"), QString::number(_elevationGraph->max(), 'f', 0)
-	  + THIN_SPACE + tr("m"));
-	info.insert(tr("Minimum"), QString::number(_elevationGraph->min(), 'f', 0)
-	  + THIN_SPACE + tr("m"));
+	if (_imperialUnitsAction->isChecked()) {
+		info.insert(tr("Distance"), QString::number(_distance * M2MI, 'f', 1)
+		  + THIN_SPACE + tr("mi"));
+		info.insert(tr("Time"), timeSpan(_time));
+		info.insert(tr("Ascent"), QString::number(_elevationGraph->ascent()
+		  * M2FT, 'f', 0) + THIN_SPACE + tr("ft"));
+		info.insert(tr("Descent"), QString::number(_elevationGraph->descent()
+		  * M2FT, 'f', 0) + THIN_SPACE + tr("ft"));
+		info.insert(tr("Maximum"), QString::number(_elevationGraph->max()
+		  * M2FT, 'f', 0) + THIN_SPACE + tr("ft"));
+		info.insert(tr("Minimum"), QString::number(_elevationGraph->min()
+		  * M2FT, 'f', 0) + THIN_SPACE + tr("ft"));
+	} else {
+		info.insert(tr("Distance"), QString::number(_distance * M2KM, 'f', 1)
+		  + THIN_SPACE + tr("km"));
+		info.insert(tr("Time"), timeSpan(_time));
+		info.insert(tr("Ascent"), QString::number(_elevationGraph->ascent(),
+		  'f', 0) + THIN_SPACE + tr("m"));
+		info.insert(tr("Descent"), QString::number(_elevationGraph->descent(),
+		  'f', 0) + THIN_SPACE + tr("m"));
+		info.insert(tr("Maximum"), QString::number(_elevationGraph->max(), 'f',
+		  0) + THIN_SPACE + tr("m"));
+		info.insert(tr("Minimum"), QString::number(_elevationGraph->min(), 'f',
+		  0) + THIN_SPACE + tr("m"));
+	}
 	scene.addItem(&info);
 	scene.render(&p, QRectF(0, 0, printer.width(), 200));
 
@@ -394,14 +573,42 @@ void GUI::closeFile()
 	updateStatusBarInfo();
 }
 
-void GUI::showPOI()
+void GUI::showPOI(bool checked)
 {
-	if (_showPOIAction->isChecked())
+	if (checked)
 		_track->loadPOI(_poi);
 	else
 		_track->clearPOI();
 }
 
+void GUI::showMap(bool checked)
+{
+	if (checked)
+		_track->setMap(_currentMap);
+	else
+		_track->setMap(0);
+}
+
+void GUI::showGraphs(bool checked)
+{
+	_trackGraphs->setHidden(!checked);
+}
+
+void GUI::showToolbars(bool checked)
+{
+	if (checked) {
+		addToolBar(_fileToolBar);
+		addToolBar(_showToolBar);
+		addToolBar(_navigationToolBar);
+		_fileToolBar->show();
+		_showToolBar->show();
+		_navigationToolBar->show();
+	} else {
+		removeToolBar(_fileToolBar);
+		removeToolBar(_showToolBar);
+		removeToolBar(_navigationToolBar);
+	}
+}
 
 void GUI::updateStatusBarInfo()
 {
@@ -417,11 +624,23 @@ void GUI::updateStatusBarInfo()
 	else
 		_fileNameLabel->setText(tr("%1 tracks").arg(_files.size()));
 
-	_distanceLabel->setText(QString::number(_distance / 1000, 'f', 1)
-	  + " " + tr("km"));
+	if (_imperialUnitsAction->isChecked())
+		_distanceLabel->setText(QString::number(_distance * M2MI, 'f', 1)
+		  + " " + tr("mi"));
+	else
+		_distanceLabel->setText(QString::number(_distance * M2KM, 'f', 1)
+		  + " " + tr("km"));
 	_timeLabel->setText(timeSpan(_time));
 }
 
+void GUI::mapChanged(int index)
+{
+	_currentMap = _maps.at(index);
+
+	if (_showMapAction->isChecked())
+		_track->setMap(_currentMap);
+}
+
 void GUI::graphChanged(int index)
 {
 	if (_trackGraphs->widget(index) == _elevationGraph)
@@ -430,15 +649,97 @@ void GUI::graphChanged(int index)
 		_speedGraph->setSliderPosition(_elevationGraph->sliderPosition());
 }
 
+void GUI::updateNavigationActions()
+{
+	if (_browser->isLast()) {
+		_nextAction->setEnabled(false);
+		_lastAction->setEnabled(false);
+	} else {
+		_nextAction->setEnabled(true);
+		_lastAction->setEnabled(true);
+	}
+
+	if (_browser->isFirst()) {
+		_prevAction->setEnabled(false);
+		_firstAction->setEnabled(false);
+	} else {
+		_prevAction->setEnabled(true);
+		_firstAction->setEnabled(true);
+	}
+}
+
+void GUI::setMetricUnits()
+{
+	_elevationGraph->setUnits(Metric);
+	_speedGraph->setUnits(Metric);
+	updateStatusBarInfo();
+}
+
+void GUI::setImperialUnits()
+{
+	_elevationGraph->setUnits(Imperial);
+	_speedGraph->setUnits(Imperial);
+	updateStatusBarInfo();
+}
+
+void GUI::next()
+{
+	QString file = _browser->next();
+	if (file.isNull())
+		return;
+
+	closeFile();
+	openFile(file);
+}
+
+void GUI::prev()
+{
+	QString file = _browser->prev();
+	if (file.isNull())
+		return;
+
+	closeFile();
+	openFile(file);
+}
+
+void GUI::last()
+{
+	QString file = _browser->last();
+	if (file.isNull())
+		return;
+
+	closeFile();
+	openFile(file);
+}
+
+void GUI::first()
+{
+	QString file = _browser->first();
+	if (file.isNull())
+		return;
+
+	closeFile();
+	openFile(file);
+}
 
 void GUI::keyPressEvent(QKeyEvent *event)
 {
 	QString file;
 
-	if (event->key() == PREV_KEY)
-		file = _browser->prev();
-	if (event->key() == NEXT_KEY)
-		file = _browser->next();
+	switch (event->key()) {
+		case PREV_KEY:
+			file = _browser->prev();
+			break;
+		case NEXT_KEY:
+			file = _browser->next();
+			break;
+		case FIRST_KEY:
+			file = _browser->first();
+			break;
+		case LAST_KEY:
+			file = _browser->last();
+			break;
+	}
 
 	if (!file.isNull()) {
 		if (!(event->modifiers() & MODIFIER))

src/gui.h

@@ -16,6 +16,7 @@ class FileBrowser;
 class ElevationGraph;
 class SpeedGraph;
 class Track;
+class Map;
 
 class GUI : public QMainWindow
 {
@@ -29,17 +30,33 @@ public:
 private slots:
 	void about();
 	void keys();
+	void dataSources();
 	void saveFile();
 	void saveAs();
 	void openFile();
 	void closeFile();
 	void reloadFile();
 	void openPOIFile();
-	void showPOI();
+	void showPOI(bool checked);
+	void showMap(bool checked);
+	void showGraphs(bool checked);
+	void showToolbars(bool checked);
 
+	void mapChanged(int);
 	void graphChanged(int);
 
+	void next();
+	void prev();
+	void last();
+	void first();
+
+	void setMetricUnits();
+	void setImperialUnits();
+
 private:
+	void loadFiles();
+
+	void createMapActions();
 	void createActions();
 	void createMenus();
 	void createToolBars();
@@ -50,20 +67,27 @@ private:
 	bool loadFile(const QString &fileName);
 	void saveFile(const QString &fileName);
 	void updateStatusBarInfo();
+	void updateNavigationActions();
 
 	void keyPressEvent(QKeyEvent * event);
 
 	QMenu *_fileMenu;
 	QMenu *_helpMenu;
 	QMenu *_poiMenu;
+	QMenu *_mapMenu;
+	QMenu *_settingsMenu;
+	QMenu *_unitsMenu;
 
 	QToolBar *_fileToolBar;
-	QToolBar *_poiToolBar;
+	QToolBar *_showToolBar;
+	QToolBar *_navigationToolBar;
 	QTabWidget *_trackGraphs;
 	QActionGroup *_fileActionGroup;
+	QActionGroup *_navigationActionGroup;
 
 	QAction *_exitAction;
 	QAction *_keysAction;
+	QAction *_dataSourcesAction;
 	QAction *_aboutAction;
 	QAction *_aboutQtAction;
 	QAction *_saveFileAction;
@@ -73,6 +97,16 @@ private:
 	QAction *_reloadFileAction;
 	QAction *_openPOIAction;
 	QAction *_showPOIAction;
+	QAction *_showMapAction;
+	QAction *_showGraphsAction;
+	QAction *_showToolbarsAction;
+	QAction *_nextAction;
+	QAction *_prevAction;
+	QAction *_lastAction;
+	QAction *_firstAction;
+	QAction *_metricUnitsAction;
+	QAction *_imperialUnitsAction;
+	QList<QAction*> _mapActions;
 
 	QLabel *_fileNameLabel;
 	QLabel *_distanceLabel;
@@ -83,10 +117,12 @@ private:
 	Track *_track;
 
 	POI _poi;
+	QList<Map*> _maps;
 
 	FileBrowser *_browser;
 	QList<QString> _files;
 	QString _saveFileName;
+	Map *_currentMap;
 
 	qreal _distance;
 	qreal _time;

src/icons.h

@@ -9,8 +9,13 @@
 #define SAVE_AS_ICON     ":/icons/document-save-as.png"
 #define CLOSE_FILE_ICON  ":/icons/dialog-close.png"
 #define SHOW_POI_ICON    ":/icons/flag.png"
+#define SHOW_MAP_ICON    ":/icons/applications-internet.png"
 #define QUIT_ICON        ":/icons/application-exit.png"
 #define RELOAD_FILE_ICON ":/icons/view-refresh.png"
+#define NEXT_FILE_ICON   ":/icons/arrow-right.png"
+#define PREV_FILE_ICON   ":/icons/arrow-left.png"
+#define LAST_FILE_ICON   ":/icons/arrow-right-double.png"
+#define FIRST_FILE_ICON  ":/icons/arrow-left-double.png"
 
 #if QT_VERSION < QT_VERSION_CHECK(5, 0, 0)
 #define QT_ICON          ":/trolltech/qmessagebox/images/qtlogo-64.png"

src/keys.h

@@ -3,6 +3,8 @@
 
 #define NEXT_KEY         Qt::Key_Space
 #define PREV_KEY         Qt::Key_Backspace
+#define FIRST_KEY        Qt::Key_Home
+#define LAST_KEY         Qt::Key_End
 #define MODIFIER         Qt::ShiftModifier
 
 #endif // KEYS_H

src/ll.cpp

@@ -1,9 +1,14 @@
 #include <cmath>
 #include "ll.h"
 
+// MSVC workarounds
 #ifndef M_PI
 	#define M_PI 3.14159265358979323846
 #endif // M_PI
+#if defined(_MSC_VER) && (_MSC_VER < 1800)
+	#define log2(n) (log(n)/log(2.0))
+#endif
+
 
 #define WGS84_RADIUS 6378137.0
 #define deg2rad(d) (((d)*M_PI)/180.0)
@@ -20,8 +25,46 @@ qreal llDistance(const QPointF &p1, const QPointF &p2)
 	return (WGS84_RADIUS * c);
 }
 
-void ll2mercator(const QPointF &src, QPointF &dst)
+QPointF ll2mercator(const QPointF &ll)
 {
-	dst.setX(src.x());
-	dst.setY(rad2deg(log(tan(M_PI/4.0 + deg2rad(src.y())/2.0))));
+	QPointF m;
+
+	m.setX(ll.x());
+	m.setY(rad2deg(log(tan(M_PI/4.0 + deg2rad(ll.y())/2.0))));
+
+	return m;
+}
+
+QPoint mercator2tile(const QPointF &m, int z)
+{
+	QPoint tile;
+
+	tile.setX((int)(floor((m.x() + 180.0) / 360.0 * pow(2.0, z))));
+	tile.setY((int)(floor((1.0 - (m.y() / 180.0)) / 2.0 * pow(2.0, z))));
+
+	return tile;
+}
+
+QPointF tile2mercator(const QPoint &tile, int z)
+{
+	QPointF m;
+
+	m.setX(tile.x() / pow(2.0, z) * 360.0 - 180);
+	qreal n = M_PI - 2.0 * M_PI * tile.y() / pow(2.0, z);
+	m.setY(rad2deg(atan(0.5 * (exp(n) - exp(-n)))));
+
+	return ll2mercator(m);
+}
+
+int scale2zoom(qreal scale)
+{
+	int zoom;
+
+	zoom = (int)log2(360.0/(scale * (qreal)TILE_SIZE));
+
+	if (zoom < ZOOM_MIN)
+		return ZOOM_MIN;
+	if (zoom > ZOOM_MAX)
+		return ZOOM_MAX;
+	return zoom;
 }

src/ll.h

@@ -3,7 +3,14 @@
 
 #include <QPointF>
 
-void ll2mercator(const QPointF &src, QPointF &dst);
+#define TILE_SIZE 256
+#define ZOOM_MAX 18
+#define ZOOM_MIN 3
+
+QPointF ll2mercator(const QPointF &ll);
 qreal llDistance(const QPointF &p1, const QPointF &p2);
+QPoint mercator2tile(const QPointF &m, int zoom);
+QPointF tile2mercator(const QPoint &tile, int zoom);
+int scale2zoom(qreal scale);
 
 #endif // LL_H

src/main.cpp

@@ -13,9 +13,9 @@ int main(int argc, char *argv[])
 	QTranslator translator;
 	translator.load(QString(":/lang/gpxsee_") + locale);
 	app.installTranslator(&translator);
-#ifdef __APPLE__
+#ifdef Q_OS_MAC
 	app.setAttribute(Qt::AA_DontShowIconsInMenus);
-#endif // __APPLE__
+#endif // Q_OS_MAC
 
 	GUI gui;
 	gui.setWindowIcon(QIcon(QPixmap(APP_ICON)));

src/map.cpp

@@ -0,0 +1,56 @@
+#include <QFileInfo>
+#include <QDir>
+#include "downloader.h"
+#include "ll.h"
+#include "config.h"
+#include "map.h"
+
+
+Map::Map(const QString &name, const QString &url)
+{
+	_name = name;
+	_url = url;
+
+	connect(&Downloader::instance(), SIGNAL(finished()), this,
+	  SLOT(emitLoaded()));
+
+	QString path = QString(TILES_DIR"/") + _name;
+	if (!QDir::home().mkpath(path))
+		fprintf(stderr, "Error creating tiles dir: %s\n", qPrintable(path));
+}
+
+void Map::emitLoaded()
+{
+	emit loaded();
+}
+
+void Map::loadTiles(QList<Tile> &list)
+{
+	QList<Download> dl;
+
+	for (int i = 0; i < list.size(); ++i) {
+		Tile &t = list[i];
+		QString file = QString("%1/"TILES_DIR"/%2/%3-%4-%5")
+		  .arg(QDir::homePath()).arg(_name).arg(t.zoom()).arg(t.xy().rx())
+		  .arg(t.xy().ry());
+		QFileInfo fi(file);
+
+		if (fi.exists()) {
+			if (!t.pixmap().load(file))
+				fprintf(stderr, "Error loading map tile: %s\n",
+				  qPrintable(file));
+		} else {
+			t.pixmap() = QPixmap(TILE_SIZE, TILE_SIZE);
+			t.pixmap().fill();
+
+			QString url(_url);
+			url.replace("$z", QString::number(t.zoom()));
+			url.replace("$x", QString::number(t.xy().x()));
+			url.replace("$y", QString::number(t.xy().y()));
+			dl.append(Download(url, file));
+		}
+	}
+
+	if (!dl.empty())
+		Downloader::instance().get(dl);
+}

src/map.h

@@ -0,0 +1,46 @@
+#ifndef MAP_H
+#define MAP_H
+
+#include <QPixmap>
+#include "downloader.h"
+
+
+class Tile
+{
+public:
+	Tile(const QPoint &xy, int zoom)
+		{_xy = xy; _zoom = zoom;}
+
+	int zoom() {return _zoom;}
+	QPoint& xy() {return _xy;}
+	QPixmap& pixmap() {return _pixmap;}
+
+private:
+	int _zoom;
+	QPoint _xy;
+	QPixmap _pixmap;
+};
+
+
+class Map : public QObject
+{
+	Q_OBJECT
+
+signals:
+	void loaded();
+
+public:
+	Map(const QString &name, const QString &url);
+
+	const QString &name() {return _name;}
+	void loadTiles(QList<Tile> &list);
+
+private slots:
+	void emitLoaded();
+
+private:
+	QString _name;
+	QString _url;
+};
+
+#endif // MAP_H

src/maplist.cpp

@@ -0,0 +1,40 @@
+#include <QFile>
+#include <QFileInfo>
+#include "maplist.h"
+
+
+QList<Map*> MapList::load(const QString &fileName)
+{
+	QList<Map*> mapList;
+	QFileInfo fi(fileName);
+
+	if (!fi.exists())
+		return mapList;
+
+	QFile file(fileName);
+
+	if (!file.open(QFile::ReadOnly | QFile::Text)) {
+		fprintf(stderr, "Error opening map list file: %s: %s\n",
+		  qPrintable(fileName), qPrintable(file.errorString()));
+		return mapList;
+	}
+
+	int ln = 0;
+	while (!file.atEnd()) {
+		ln++;
+		QByteArray line = file.readLine();
+		QList<QByteArray> list = line.split('\t');
+		if (list.size() != 2) {
+			fprintf(stderr, "Invalid map list entry on line %d\n", ln);
+			continue;
+		}
+
+		QByteArray ba1 = list[0].trimmed();
+		QByteArray ba2 = list[1].trimmed();
+
+		mapList.append(new Map(QString::fromUtf8(ba1.data(), ba1.size()),
+		  QString::fromLatin1(ba2.data(), ba2.size())));
+	}
+
+	return mapList;
+}

src/maplist.h

@@ -0,0 +1,14 @@
+#ifndef MAPLIST_H
+#define MAPLIST_H
+
+#include <QList>
+#include "map.h"
+
+
+class MapList
+{
+public:
+	static QList<Map*> load(const QString &fileName);
+};
+
+#endif // MAPLIST_H

src/markeritem.cpp

@@ -1,6 +1,7 @@
 #include <QPainter>
 #include "markeritem.h"
 
+
 #define SIZE 8
 
 MarkerItem::MarkerItem(QGraphicsItem *parent) : QGraphicsItem(parent)

src/parser.cpp

@@ -1,7 +1,5 @@
 #include "parser.h"
 
-#include <QDebug>
-
 
 void Parser::handleExtensionData(QVector<TrackPoint> &data,
   QStringRef element, const QString &value)
@@ -94,20 +92,12 @@ bool Parser::parse(QVector<TrackPoint> &data)
 		if (_reader.name() == "gpx")
 			gpx(data);
 		else
-			_reader.raiseError(QObject::tr("Not a GPX file."));
+			_reader.raiseError("Not a GPX file.");
 	}
 
 	return !_reader.error();
 }
 
-
-QString Parser::errorString() const
-{
-	return QObject::tr("%1\nLine %2")
-		.arg(_reader.errorString())
-		.arg(_reader.lineNumber());
-}
-
 bool Parser::loadFile(QIODevice *device, QVector<TrackPoint> &data)
 {
 	_reader.clear();

src/parser.h

@@ -20,7 +20,8 @@ class Parser
 {
 public:
 	bool loadFile(QIODevice *device, QVector<TrackPoint> &data);
-	QString errorString() const;
+	QString errorString() const {return _reader.errorString();}
+	int errorLine() const {return _reader.lineNumber();}
 
 private:
 	bool parse(QVector<TrackPoint> &data);

src/poi.cpp

@@ -5,13 +5,16 @@
 #include "poi.h"
 
 
+#define BOUNDING_RECT_SIZE 0.01
+
 bool POI::loadFile(const QString &fileName)
 {
 	QFile file(fileName);
 	bool ret;
-	int ln = 1;
+	int ln = 1, cnt = _data.size();
 
 	_error.clear();
+	_errorLine = 0;
 
 	if (!file.open(QFile::ReadOnly | QFile::Text)) {
 		_error = qPrintable(file.errorString());
@@ -22,69 +25,69 @@ bool POI::loadFile(const QString &fileName)
 		QByteArray line = file.readLine();
 		QList<QByteArray> list = line.split(',');
 		if (list.size() < 3) {
-			_error = QString("Parse error\nLine %1").arg(ln);
+			_error = "Parse error";
+			_errorLine = ln;
 			return false;
 		}
 
 		qreal lat = list[0].trimmed().toDouble(&ret);
 		if (!ret) {
-			_error = QObject::tr("Invalid latitude\nLine %1").arg(ln);
+			_error = "Invalid latitude";
+			_errorLine = ln;
 			return false;
 		}
 		qreal lon = list[1].trimmed().toDouble(&ret);
 		if (!ret) {
-			_error = QObject::tr("Invalid longitude\nLine %1").arg(ln);
+			_error = "Invalid longitude";
+			_errorLine = ln;
 			return false;
 		}
 		QByteArray ba = list[2].trimmed();
 
-		QPointF p;
 		Entry entry;
-		ll2mercator(QPointF(lon, lat), p);
 		entry.description = QString::fromUtf8(ba.data(), ba.size());
-		entry.coordinates = p;
+		entry.coordinates = ll2mercator(QPointF(lon, lat));
 
 		_data.append(entry);
 		ln++;
 	}
 
-	for (int i = 0; i < _data.size(); ++i) {
+	for (int i = cnt; i < _data.size(); ++i) {
 		qreal c[2];
 		c[0] = _data.at(i).coordinates.x();
 		c[1] = _data.at(i).coordinates.y();
-		_tree.Insert(c, c, &_data.at(i));
+		_tree.Insert(c, c, i);
 	}
 
 	return true;
 }
 
-static bool cb(const Entry* data, void* context)
+static bool cb(size_t data, void* context)
 {
-	QSet<const Entry*> *set = (QSet<const Entry*>*) context;
-	set->insert(data);
+	QSet<int> *set = (QSet<int>*) context;
+	set->insert((int)data);
 
 	return true;
 }
 
-#define RECT 0.01
 QVector<Entry> POI::points(const QVector<QPointF> &path) const
 {
 	QVector<Entry> ret;
-	QSet<const Entry*> set;
+	QSet<int> set;
 	qreal min[2], max[2];
 
 	for (int i = 0; i < path.count(); i++) {
-		min[0] = path.at(i).x() - RECT;
-		min[1] = path.at(i).y() - RECT;
-		max[0] = path.at(i).x() + RECT;
-		max[1] = path.at(i).y() + RECT;
+		min[0] = path.at(i).x() - BOUNDING_RECT_SIZE;
+		min[1] = path.at(i).y() - BOUNDING_RECT_SIZE;
+		max[0] = path.at(i).x() + BOUNDING_RECT_SIZE;
+		max[1] = path.at(i).y() + BOUNDING_RECT_SIZE;
 		_tree.Search(min, max, cb, &set);
 	}
 
-	QSet<const Entry *>::const_iterator i = set.constBegin();
+	QSet<int>::const_iterator i = set.constBegin();
 	while (i != set.constEnd()) {
-		ret.append(*(*i));
-    	++i;
+		ret.append(_data.at(*i));
+		++i;
 	}
 
 	return ret;

src/poi.h

@@ -28,16 +28,19 @@ class POI
 public:
 	bool loadFile(const QString &fileName);
 	QString errorString() const {return _error;}
+	int errorLine() const {return _errorLine;}
+
 	QVector<Entry> points(const QVector<QPointF> &path) const;
 
 	void clear();
 
 private:
-	typedef RTree<const Entry*, qreal, 2> POITree;
+	typedef RTree<size_t, qreal, 2> POITree;
 
 	POITree _tree;
 	QVector<Entry> _data;
 	QString _error;
+	int _errorLine;
 };
 
 #endif // POI_H

src/poiitem.cpp

@@ -2,15 +2,13 @@
 #include "config.h"
 #include "poiitem.h"
 
-#include <QDebug>
 
 #define POINT_SIZE  8
 
-
-POIItem::POIItem(const QString &text, QGraphicsItem *parent)
+POIItem::POIItem(const Entry &entry, QGraphicsItem *parent)
   : QGraphicsItem(parent)
 {
-	_text = text;
+	_entry = entry;
 	updateBoundingRect();
 }
 
@@ -20,7 +18,7 @@ void POIItem::updateBoundingRect()
 	font.setPixelSize(FONT_SIZE);
 	font.setFamily(FONT_FAMILY);
 	QFontMetrics fm(font);
-	QRect ts = fm.tightBoundingRect(_text);
+	QRect ts = fm.tightBoundingRect(_entry.description);
 
 	_boundingRect = QRectF(0, 0, ts.width() + POINT_SIZE,
 	  ts.height() + fm.descent() + POINT_SIZE);
@@ -35,11 +33,11 @@ void POIItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
 	font.setPixelSize(FONT_SIZE);
 	font.setFamily(FONT_FAMILY);
 	QFontMetrics fm(font);
-	QRect ts = fm.tightBoundingRect(_text);
+	QRect ts = fm.tightBoundingRect(_entry.description);
 
 	painter->setFont(font);
 	painter->drawText(POINT_SIZE - qMax(ts.x(), 0), POINT_SIZE + ts.height(),
-	  _text);
+	  _entry.description);
 	painter->setBrush(Qt::SolidPattern);
 	painter->drawEllipse(0, 0, POINT_SIZE, POINT_SIZE);
 

src/poiitem.h

@@ -2,11 +2,13 @@
 #define POIITEM_H
 
 #include <QGraphicsItem>
+#include "poi.h"
 
 class POIItem : public QGraphicsItem
 {
 public:
-	POIItem(const QString &text, QGraphicsItem *parent = 0);
+	POIItem(const Entry &entry, QGraphicsItem *parent = 0);
+	const Entry &entry() const {return _entry;}
 
 	QRectF boundingRect() const {return _boundingRect;}
 	void paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
@@ -15,7 +17,7 @@ public:
 private:
 	void updateBoundingRect();
 
-	QString _text;
+	Entry _entry;
 	QRectF _boundingRect;
 };
 

src/slideritem.cpp

@@ -1,7 +1,6 @@
 #include <QPainter>
 #include "slideritem.h"
 
-#include <QDebug>
 
 #define SIZE        10
 
@@ -47,3 +46,9 @@ QVariant SliderItem::itemChange(GraphicsItemChange change, const QVariant &value
 
 	return QGraphicsItem::itemChange(change, value);
 }
+
+void SliderItem::clear()
+{
+	_area = QRectF();
+	setPos(QPointF());
+}

src/slideritem.h

@@ -17,6 +17,8 @@ public:
 	QRectF area() {return _area;}
 	void setArea(const QRectF &area) {_area = area;}
 
+	void clear();
+
 signals:
 	void positionChanged(const QPointF&);
 

src/speedgraph.cpp

@@ -1,8 +1,6 @@
 #include "config.h"
 #include "speedgraph.h"
 
-#include <QDebug>
-
 
 SpeedGraph::SpeedGraph(QWidget *parent) : Graph(parent)
 {
@@ -12,11 +10,19 @@ SpeedGraph::SpeedGraph(QWidget *parent) : Graph(parent)
 	Graph::setYLabel(tr("Speed"));
 	Graph::setXUnits(tr("km"));
 	Graph::setYUnits(tr("km/h"));
-	Graph::setXScale(0.001);
-	Graph::setYScale(3.6);
+	Graph::setXScale(M2KM);
+	Graph::setYScale(MS2KMH);
 	Graph::setPrecision(1);
 }
 
+void SpeedGraph::addInfo()
+{
+	Graph::addInfo(tr("Average"), QString::number(avg() * _yScale, 'f', 1)
+	  + THIN_SPACE + _yUnits);
+	Graph::addInfo(tr("Maximum"), QString::number(_max * _yScale,  'f', 1)
+	  + THIN_SPACE + _yUnits);
+}
+
 void SpeedGraph::loadGPX(const GPX &gpx)
 {
 	QVector<QPointF> data;
@@ -33,13 +39,8 @@ void SpeedGraph::loadGPX(const GPX &gpx)
 		max = qMax(max, data.at(i).y());
 	_max = qMax(_max, max);
 
-
-	addInfo(tr("Average"), QString::number(avg() * _yScale, 'f', 1)
-	  + THIN_SPACE + _yUnits);
-	addInfo(tr("Maximum"), QString::number(_max * _yScale,  'f', 1)
-	  + THIN_SPACE + _yUnits);
-
-	Graph::loadData(data);
+	addInfo();
+	loadData(data);
 }
 
 qreal SpeedGraph::avg() const
@@ -62,3 +63,23 @@ void SpeedGraph::clear()
 
 	Graph::clear();
 }
+
+void SpeedGraph::setUnits(enum Units units)
+{
+	if (units == Metric) {
+		Graph::setXUnits(tr("km"));
+		Graph::setYUnits(tr("km/h"));
+		Graph::setXScale(M2KM);
+		Graph::setYScale(MS2KMH);
+	} else {
+		Graph::setXUnits(tr("mi"));
+		Graph::setYUnits(tr("mi/h"));
+		Graph::setXScale(M2MI);
+		Graph::setYScale(MS2MIH);
+	}
+
+	clearInfo();
+	addInfo();
+
+	redraw();
+}

src/speedgraph.h

@@ -4,6 +4,7 @@
 #include <QList>
 #include "graph.h"
 #include "gpx.h"
+#include "units.h"
 
 class SpeedGraph : public Graph
 {
@@ -14,11 +15,14 @@ public:
 
 	void loadGPX(const GPX &gpx);
 	void clear();
+	void setUnits(enum Units units);
 
 	qreal avg() const;
 	qreal max() const {return _max;}
 
 private:
+	void addInfo();
+
 	qreal _max;
 	QList<QPointF> _avg;
 };

src/track.cpp

@@ -3,21 +3,28 @@
 #include <QGraphicsScene>
 #include <QPainterPath>
 #include <QWheelEvent>
-#include <QGraphicsEllipseItem>
 #include "poiitem.h"
 #include "markeritem.h"
+#include "ll.h"
 #include "track.h"
 
-#include <QDebug>
 
+#define MARGIN 10.0
+#define TRACK_WIDTH 3
 
 Track::Track(QWidget *parent)
 	: QGraphicsView(parent)
 {
 	_scene = new QGraphicsScene(this);
 	setScene(_scene);
-	setResizeAnchor(QGraphicsView::AnchorViewCenter);
+	setCacheMode(QGraphicsView::CacheBackground);
+	setDragMode(QGraphicsView::ScrollHandDrag);
+	setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
+	setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
 
+	_zoom = -1;
+	_scale = 1.0;
+	_map = 0;
 	_maxLen = 0;
 }
 
@@ -33,6 +40,7 @@ void Track::loadGPX(const GPX &gpx)
 	QGraphicsPathItem *pi;
 	MarkerItem *mi;
 	QColor color = _colorShop.color();
+	qreal prevScale = _scale;
 
 
 	gpx.track(track);
@@ -48,67 +56,96 @@ void Track::loadGPX(const GPX &gpx)
 
 	_maxLen = qMax(path.length(), _maxLen);
 
-	for (int i = 0; i < _trackPaths.size(); i++) {
-		_trackPaths.at(i)->resetTransform();
-		_scene->removeItem(_markers.at(i));
-	}
 
 	pi = new QGraphicsPathItem(path);
-	QBrush brush(color, Qt::SolidPattern);
-	QPen pen(brush, 0);
-	pi->setPen(pen);
-	_scene->addItem(pi);
 	_trackPaths.append(pi);
+	_zoom = scale2zoom(trackScale());
+	_scale = mapScale();
+	QBrush brush(color, Qt::SolidPattern);
+	QPen pen(brush, TRACK_WIDTH * _scale);
+	pi->setPen(pen);
+	pi->setScale(1.0/_scale);
+	_scene->addItem(pi);
 
-	QTransform t = transform();
-
-	mi = new MarkerItem();
-	mi->setPos(pi->path().pointAtPercent(0));
+	mi = new MarkerItem(pi);
 	_markers.append(mi);
+	mi->setPos(pi->path().pointAtPercent(0));
+	mi->setScale(_scale);
 
+	if (_trackPaths.size() > 1 && prevScale != _scale)
+		rescale(_scale);
+
+	QRectF br = trackBoundingRect();
+	QRectF ba = br.adjusted(-TILE_SIZE, -TILE_SIZE, TILE_SIZE, TILE_SIZE);
+	_scene->setSceneRect(ba);
+	centerOn(ba.center());
+}
+
+QRectF Track::trackBoundingRect() const
+{
+	qreal bottom, top, left, right;
+
+	bottom = _trackPaths.at(0)->sceneBoundingRect().bottom();
+	top = _trackPaths.at(0)->sceneBoundingRect().top();
+	left = _trackPaths.at(0)->sceneBoundingRect().left();
+	right = _trackPaths.at(0)->sceneBoundingRect().right();
+
+	for (int i = 1; i < _trackPaths.size(); i++) {
+		bottom = qMax(bottom, _trackPaths.at(i)->sceneBoundingRect().bottom());
+		top = qMin(top, _trackPaths.at(i)->sceneBoundingRect().top());
+		right = qMax(right, _trackPaths.at(i)->sceneBoundingRect().right());
+		left = qMin(left, _trackPaths.at(i)->sceneBoundingRect().left());
+	}
+
+	return QRectF(QPointF(left, top), QPointF(right, bottom));
+}
+
+qreal Track::trackScale() const
+{
+	qreal bottom, top, left, right;
+
+	bottom = _trackPaths.at(0)->path().boundingRect().bottom();
+	top = _trackPaths.at(0)->path().boundingRect().top();
+	left = _trackPaths.at(0)->path().boundingRect().left();
+	right = _trackPaths.at(0)->path().boundingRect().right();
+
+	for (int i = 1; i < _trackPaths.size(); i++) {
+		bottom = qMax(bottom, _trackPaths.at(i)->path().boundingRect().bottom());
+		top = qMin(top, _trackPaths.at(i)->path().boundingRect().top());
+		right = qMax(right, _trackPaths.at(i)->path().boundingRect().right());
+		left = qMin(left, _trackPaths.at(i)->path().boundingRect().left());
+	}
+
+	QRectF br(QPointF(left, top), QPointF(right, bottom));
+	QPointF sc(br.width() / (viewport()->width() - MARGIN/2),
+	  br.height() / (viewport()->height() - MARGIN/2));
+
+	return qMax(sc.x(), sc.y());
+}
+
+qreal Track::mapScale() const
+{
+	return ((360.0/(qreal)(1<<_zoom))/(qreal)TILE_SIZE);
+}
+
+void Track::rescale(qreal scale)
+{
 	for (int i = 0; i < _trackPaths.size(); i++) {
-		_markers.at(i)->setTransform(t);
-		_scene->addItem(_markers.at(i));
+		_markers.at(i)->setScale(scale);
+		_trackPaths.at(i)->setScale(1.0/scale);
+
+		QPen pen(_trackPaths.at(i)->pen());
+		pen.setWidthF(TRACK_WIDTH * scale);
+		_trackPaths.at(i)->setPen(pen);
 	}
 
-	_scene->setSceneRect(_scene->itemsBoundingRect());
-	fitInView(_scene->sceneRect(), Qt::KeepAspectRatio);
-}
-
-QTransform Track::transform() const
-{
-	QPointF scale(_scene->itemsBoundingRect().width() / viewport()->width(),
-	  _scene->itemsBoundingRect().height() / viewport()->height());
-	QTransform transform;
-	transform.scale(qMax(scale.x(), scale.y()), qMax(scale.x(), scale.y()));
-
-	return transform;
-}
-
-void Track::loadPOI(const POI &poi)
-{
-	QHash<Entry, POIItem*>::const_iterator it,jt;
-
-	for (int i = 0; i < _tracks.size(); i++) {
-		QVector<Entry> p = poi.points(_tracks.at(i));
-
-		for (int i = 0; i < p.size(); i++) {
-			if (_pois.contains(p.at(i)))
-				continue;
-
-			POIItem *pi = new POIItem(p.at(i).description);
-			pi->setPos(p.at(i).coordinates.x(), -p.at(i).coordinates.y());
-			pi->setTransform(transform());
-			pi->setZValue(1);
-			_scene->addItem(pi);
-
-			_pois.insert(p.at(i), pi);
-		}
+	QHash<Entry, POIItem*>::const_iterator it, jt;
+	for (it = _pois.constBegin(); it != _pois.constEnd(); it++) {
+		it.value()->setPos(QPointF(it.value()->entry().coordinates.x()
+		  * 1.0/scale, -it.value()->entry().coordinates.y() * 1.0/scale));
+		it.value()->show();
 	}
 
-	for (it = _pois.constBegin(); it != _pois.constEnd(); it++)
-		it.value()->setTransform(transform());
-
 	for (it = _pois.constBegin(); it != _pois.constEnd(); it++) {
 		for (jt = _pois.constBegin(); jt != _pois.constEnd(); jt++) {
 			if (it != jt && it.value()->isVisible() && jt.value()->isVisible()
@@ -117,21 +154,98 @@ void Track::loadPOI(const POI &poi)
 		}
 	}
 
-	_scene->setSceneRect(_scene->itemsBoundingRect());
-	fitInView(_scene->sceneRect(), Qt::KeepAspectRatio);
+	_scale = scale;
+}
+
+void Track::loadPOI(const POI &poi)
+{
+	QHash<Entry, POIItem*>::const_iterator it,jt;
+
+	if (!_tracks.size())
+		return;
+
+	for (int i = 0; i < _tracks.size(); i++) {
+		QVector<Entry> p = poi.points(_tracks.at(i));
+
+		for (int i = 0; i < p.size(); i++) {
+			if (_pois.contains(p.at(i)))
+				continue;
+
+			POIItem *pi = new POIItem(p.at(i));
+			pi->setPos(p.at(i).coordinates.x() * 1.0/_scale,
+			  -p.at(i).coordinates.y() * 1.0/_scale);
+			pi->setZValue(1);
+			_scene->addItem(pi);
+
+			_pois.insert(p.at(i), pi);
+		}
+	}
+
+	for (it = _pois.constBegin(); it != _pois.constEnd(); it++) {
+		for (jt = _pois.constBegin(); jt != _pois.constEnd(); jt++) {
+			if (it != jt && it.value()->isVisible() && jt.value()->isVisible()
+			  && it.value()->collidesWithItem(jt.value()))
+				jt.value()->hide();
+		}
+	}
+}
+
+void Track::setMap(Map *map)
+{
+	_map = map;
+	if (_map)
+		connect(_map, SIGNAL(loaded()), this, SLOT(redraw()));
+	resetCachedContent();
+}
+
+void Track::redraw()
+{
+	resetCachedContent();
 }
 
 void Track::wheelEvent(QWheelEvent *event)
 {
-	float factor;
+	if (_tracks.isEmpty())
+		return;
 
-	factor = pow(2.0, -event->delta() / 400.0);
-	scale(factor, factor);
+	QPointF pos = mapToScene(event->pos());
+	qreal scale = _scale;
+
+	_zoom = (event->delta() > 0) ?
+		qMin(_zoom + 1, ZOOM_MAX) : qMax(_zoom - 1, ZOOM_MIN);
+
+	rescale(mapScale());
+	QRectF br = trackBoundingRect();
+	QRectF ba = br.adjusted(-TILE_SIZE, -TILE_SIZE, TILE_SIZE, TILE_SIZE);
+	_scene->setSceneRect(ba);
+
+	if (br.width() < viewport()->size().width()
+	  && br.height() < viewport()->size().height())
+		centerOn(br.center());
+	else
+		centerOn(pos * scale/_scale);
+
+	resetCachedContent();
+}
+
+void Track::showMarkers(bool show)
+{
+	for (int i = 0; i < _markers.size(); i++)
+		_markers.at(i)->setVisible(show);
+}
+
+void Track::setTrackLineWidth(qreal width)
+{
+	for (int i = 0; i < _trackPaths.size(); i++) {
+		QPen pen(_trackPaths.at(i)->pen());
+		pen.setWidthF(width);
+		_trackPaths.at(i)->setPen(pen);
+	}
 }
 
 void Track::plot(QPainter *painter, const QRectF &target)
 {
-	QRectF orig = sceneRect();
+	QRectF orig = _scene->itemsBoundingRect();
 	QRectF adj;
 	qreal ratio, diff;
 
@@ -145,11 +259,11 @@ void Track::plot(QPainter *painter, const QRectF &target)
 		adj = orig.adjusted(0, -diff/2, 0, diff/2);
 	}
 
-	for (int i = 0; i < _markers.size(); i++)
-		_markers.at(i)->setVisible(false);
+	showMarkers(false);
+	setTrackLineWidth(0);
 	_scene->render(painter, target, adj, Qt::KeepAspectRatioByExpanding);
-	for (int i = 0; i < _markers.size(); i++)
-		_markers.at(i)->setVisible(true);
+	setTrackLineWidth(TRACK_WIDTH * _scale);
+	showMarkers(true);
 }
 
 enum QPrinter::Orientation Track::orientation() const
@@ -193,3 +307,58 @@ void Track::movePositionMarker(qreal val)
 		_markers.at(i)->setPos(pos);
 	}
 }
+
+void Track::drawBackground(QPainter *painter, const QRectF &rect)
+{
+	if (_tracks.isEmpty() || !_map) {
+		painter->fillRect(rect, Qt::white);
+		return;
+	}
+
+	painter->setWorldMatrixEnabled(false);
+
+	QRectF rr(rect.topLeft() * _scale, rect.size());
+	QPoint tile = mercator2tile(QPointF(rr.topLeft().x(), -rr.topLeft().y()),
+	  _zoom);
+	QPointF tm = tile2mercator(tile, _zoom);
+	QPoint tl = mapFromScene(QPointF(tm.x() / _scale, -tm.y() / _scale));
+
+	QList<Tile> tiles;
+	for (int i = 0; i <= rr.size().width() / TILE_SIZE + 1; i++) {
+		for (int j = 0; j <= rr.size().height() / TILE_SIZE + 1; j++) {
+			tiles.append(Tile(QPoint(tile.x() + i, tile.y() + j), _zoom));
+		}
+	}
+
+	_map->loadTiles(tiles);
+
+	for (int i = 0; i < tiles.count(); i++) {
+		Tile &t = tiles[i];
+		QPoint tp(tl.x() + (t.xy().rx() - tile.rx()) * TILE_SIZE,
+		  tl.y() + (t.xy().ry() - tile.ry()) * TILE_SIZE);
+		painter->drawPixmap(tp, t.pixmap());
+	}
+}
+
+void Track::resizeEvent(QResizeEvent *e)
+{
+	if (_tracks.isEmpty())
+		return;
+
+	QRectF br = trackBoundingRect();
+	QRectF ba = br.adjusted(-TILE_SIZE, -TILE_SIZE, TILE_SIZE, TILE_SIZE);
+
+	if (ba.width() < e->size().width()) {
+		qreal diff = e->size().width() - ba.width();
+		ba.adjust(-diff/2, 0, diff/2, 0);
+	}
+	if (ba.height() < e->size().height()) {
+		qreal diff = e->size().height() - ba.height();
+		ba.adjust(0, -diff/2, 0, diff/2);
+	}
+
+	_scene->setSceneRect(ba);
+
+	centerOn(br.center());
+	resetCachedContent();
+}

src/track.h

@@ -8,6 +8,7 @@
 #include <QPrinter>
 #include "poi.h"
 #include "gpx.h"
+#include "map.h"
 #include "colorshop.h"
 
 
@@ -23,29 +24,47 @@ public:
 	~Track();
 
 	void loadGPX(const GPX &gpx);
-	void loadPOI(const POI &poi);
 
+	void loadPOI(const POI &poi);
 	void clearPOI();
 	void clear();
 
+	void setMap(Map *map);
+
 	void plot(QPainter *painter, const QRectF &target);
 	enum QPrinter::Orientation orientation() const;
 
 public slots:
 	void movePositionMarker(qreal val);
 
+private slots:
+	void redraw();
+
 private:
-	QTransform transform() const;
+	QRectF trackBoundingRect() const;
+	qreal trackScale() const;
+	qreal mapScale() const;
+	void rescale(qreal scale);
+
+	void showMarkers(bool show);
+	void setTrackLineWidth(qreal width);
+
 	void wheelEvent(QWheelEvent *event);
+	void drawBackground(QPainter *painter, const QRectF &rect);
+	void resizeEvent(QResizeEvent *e);
 
 	QGraphicsScene *_scene;
 	QList<QVector<QPointF> > _tracks;
 	QList<QGraphicsPathItem*> _trackPaths;
 	QList<MarkerItem*> _markers;
 	QHash<Entry, POIItem*> _pois;
+	Map *_map;
 
 	ColorShop _colorShop;
 	qreal _maxLen;
+
+	qreal _scale;
+	int _zoom;
 };
 
 #endif // TRACK_H

src/units.h

@@ -0,0 +1,15 @@
+#ifndef UNITS_H
+#define UNITS_H
+
+enum Units {
+	Metric,
+	Imperial
+};
+
+#define M2KM    0.001000000000  // m -> km
+#define M2MI    0.000621371192  // m -> mi
+#define M2FT    3.280839900000  // m -> ft
+#define MS2KMH  3.600000000000  // m/s -> km/h
+#define MS2MIH  2.236936290000  // m/s -> mi/h
+
+#endif // UNITS_H