Show loading file message.

diff --git a/Cura/gui/preview3d.py b/Cura/gui/preview3d.py
index 797787c62f5fc1127f2d1455045711ae15792941..5e91099de6698d5adb146b892fb323312824a17e 100644 (file)
--- a/Cura/gui/preview3d.py
+++ b/Cura/gui/preview3d.py
@@ -322,9 +322,11 @@ class previewPanel(wx.Panel):
                                self.gcodeFileTime = None
                                self.logFileTime = None
                        obj.filename = filelist[idx]
+                       obj.mesh = None
 
                self.deselectTool()
                self.gcodeFilename = sliceRun.getExportFilename(filelist[0])
+               self.gcode = None
                #Do the STL file loading in a background thread so we don't block the UI.
                if self.loadThread is not None and self.loadThread.isAlive():
                        self.abortLoading = True
@@ -443,6 +445,7 @@ class previewPanel(wx.Panel):
                self.warningPopup.timer.Stop()
 
        def updateToolbar(self):
+               self.sliceButton.setDisabled(len(self.objectList) < 1 or self.objectList[0].mesh is None)
                self.printButton.setDisabled(self.gcode is None)
                self.rotateToolButton.setHidden(self.glCanvas.viewMode == "GCode")
                self.scaleToolButton.setHidden(self.glCanvas.viewMode == "GCode")
@@ -654,6 +657,13 @@ class PreviewGLCanvas(openglGui.glGuiPanel):
 
                self.OnDraw()
 
+               if len(self.parent.objectList) > 0 and self.parent.objectList[0].mesh is None:
+                       glDisable(GL_DEPTH_TEST)
+                       glLoadIdentity()
+                       glColor3ub(255,255,255)
+                       glTranslate(0, -3, -10)
+                       opengl.glDrawStringCenter('Loading %s ...' % (os.path.basename(self.parent.objectList[0].filename)))
+
        def OnDraw(self):
                machineSize = self.parent.machineSize