(Better layout) |
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<code cppqt> | <code cppqt> | ||
| − | |||
| − | |||
| − | + | #include <QtGui/QApplication> | |
| + | #include <marble/MarbleWidget.h> | ||
| + | |||
| + | using namespace Marble; | ||
| + | |||
| + | int main(int argc, char** argv) | ||
| + | { | ||
| + | QApplication app(argc,argv); | ||
| + | |||
| + | // Create a Marble QWidget without a parent | ||
| + | MarbleWidget *mapWidget = new MarbleWidget(); | ||
| + | |||
| + | // Load the OpenStreetMap map | ||
| + | mapWidget->setMapThemeId("earth/openstreetmap/openstreetmap.dgml"); | ||
| + | |||
| + | // Set a server for downloading map data, if needed | ||
| + | mapWidget->setDownloadUrl("http://download.kde.org/apps/marble/"); | ||
| + | mapWidget->show(); | ||
| + | |||
| + | return app.exec(); | ||
| + | } | ||
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</code> | </code> | ||
Save the code above as <tt>my_marble.cpp</tt> and compile it: | Save the code above as <tt>my_marble.cpp</tt> and compile it: | ||
| + | |||
| + | <code> | ||
g++ -I /usr/include/qt4/ -o my_marble my_marble.cpp -lmarblewidget -lQtGui | g++ -I /usr/include/qt4/ -o my_marble my_marble.cpp -lmarblewidget -lQtGui | ||
| + | </code> | ||
| + | |||
If things go fine, execute <tt>./my_marble</tt> and you end up with a fully usable OpenStreetMap application: [[Image:My_marble.png]] | If things go fine, execute <tt>./my_marble</tt> and you end up with a fully usable OpenStreetMap application: [[Image:My_marble.png]] | ||
Here's a little checklist to tackle some problems that might arise when compiling the code above: | Here's a little checklist to tackle some problems that might arise when compiling the code above: | ||
| + | |||
* You need Qt and Marble development packages (or comparable SVN installations) | * You need Qt and Marble development packages (or comparable SVN installations) | ||
* If you're running Marble from SVN, add the Marble:: prefix to the MarbleWidget above. The Marble namespace was added some time ago. | * If you're running Marble from SVN, add the Marble:: prefix to the MarbleWidget above. The Marble namespace was added some time ago. | ||
* If Qt headers are not installed in /usr/include/qt4 on your system, change the path in the g++ call above accordingly. | * If Qt headers are not installed in /usr/include/qt4 on your system, change the path in the g++ call above accordingly. | ||
* Likewise, add -I /path/to/marble/headers if they're not to be found in /usr/include | * Likewise, add -I /path/to/marble/headers if they're not to be found in /usr/include | ||
The Marble API allows a very easy integration of a map widget in your application. Let's prove that with a tiny "Hello world"-like example:
using namespace Marble;
int main(int argc, char** argv) {
QApplication app(argc,argv);
// Create a Marble QWidget without a parent MarbleWidget *mapWidget = new MarbleWidget();
KDE TechBase // Load the OpenStreetMap map
mapWidget->setMapThemeId("earth/openstreetmap/openstreetmap.dgml");
// Set a server for downloading map data, if needed
mapWidget->setDownloadUrl("http://download.kde.org/apps/marble/");
mapWidget->show();
return app.exec();
}
Save the code above as my_marble.cpp and compile it:
g++ -I /usr/include/qt4/ -o my_marble my_marble.cpp -lmarblewidget -lQtGui
If things go fine, execute ./my_marble and you end up with a fully usable OpenStreetMap application: 
Here's a little checklist to tackle some problems that might arise when compiling the code above:
