Minor cleanup in the editor main code.

src/gtk/editor.cpp

@@ -50,18 +50,26 @@ static gboolean tick(void *widget)
 
 static gint init(GtkWidget *widget)
 {
-    /* OpenGL functions can be called only if make_current returns true */
     if (gtk_gl_area_make_current(GTK_GL_AREA(widget)))
-    {
-        Video::Setup(widget->allocation.width,
-                     widget->allocation.height);
-    }
+        Video::Setup(widget->allocation.width, widget->allocation.height);
+
     return TRUE;
 }
 
+static gint reshape(GtkWidget *widget, GdkEventConfigure *event)
+{
+    (void)event;
+
+    return init(widget);
+}
+
 static gint draw(GtkWidget *widget, GdkEventExpose *event)
 {
-    if (event->count == 0 && gtk_gl_area_make_current(GTK_GL_AREA(widget)))
+    if (event->count > 0)
+        return TRUE;
+
+    /* OpenGL functions can be called only if make_current returns true */
+    if (gtk_gl_area_make_current(GTK_GL_AREA(widget)))
     {
         // FIXME: do not do anything if the game tick wasn't called?
         float const delta_time = 33.33333f;
@@ -75,18 +83,6 @@ static gint draw(GtkWidget *widget, GdkEventExpose *event)
     return TRUE;
 }
 
-static gint reshape(GtkWidget *widget, GdkEventConfigure *event)
-{
-    (void)event;
-
-    if (gtk_gl_area_make_current(GTK_GL_AREA(widget)))
-    {
-        Video::Setup(widget->allocation.width,
-                     widget->allocation.height);
-    }
-    return TRUE;
-}
-
 int main(int argc, char **argv)
 {
     /* Initialize GTK */