[ADD] a temporary implementation that allows to make screenshots of gl widgets...

[ADD] a temporary implementation that allows to make screenshots of gl widgets by pressing F12 while having the widget selected

this will be replaced by sebastians super screen capturing stuff in the near future

src/qt4gui/qt4/WQtGLWidget.cpp

@@ -25,8 +25,10 @@
 #include <string>
 #include <iostream>
 
-#include <QtGui/QKeyEvent>
 #include <QtGui/QColorDialog>
+#include <QtGui/QFileDialog>
+#include <QtGui/QKeyEvent>
+#include <QtGui/QPixmap>
 
 #include "WQtGLWidget.h"
 #include "WQtGLWidget.moc"
@@ -249,6 +251,10 @@ void WQtGLWidget::keyReleaseEvent( QKeyEvent* event )
         case Qt::Key_2:
             setCameraManipulator( TWO_D );
             break;
+        // TODO( ebaum ): replace this
+        case Qt::Key_F12:
+            makeScreenshot();
+            break;
     }
 
     switch( event->modifiers() )
@@ -349,3 +355,19 @@ void WQtGLWidget::changeBGColor()
     updateViewerBackground();
 }
 
+void WQtGLWidget::makeScreenshot()
+{
+    // TODO( ebaum ): replace this
+
+    // grab content first to avoid making a screenshot of the file dialog :)
+    QPixmap q = QPixmap::grabWindow( this->winId() );
+
+    QString path = QDir::currentPath() + tr( "/screenshot.png" );
+    QString fileName = QFileDialog::getSaveFileName( this, tr( "Save As" ), path, tr( "PNG Files (*.png);;All Files (*)" ) );
+
+    if( !fileName.isEmpty() )
+    {
+        q.save( fileName, tr( "png" ).toAscii() );
+        WLogger::getLogger()->addLogMessage( std::string( "Screenshot saved to " ) + fileName.toStdString(), "QtGLWidgetAll", LL_INFO );
+    }
+}

src/qt4gui/qt4/WQtGLWidget.h

@@ -244,6 +244,11 @@ protected:
      */
     WGECamera::ProjectionMode m_initialProjectionMode;
 
+    /**
+     * Saves a screenshot of the widget's current content, opens a file dialog to get the filename.
+     */
+    void makeScreenshot();
+
 private:
     /**
      * Timer for periodic repaints.