From 72f348658ff8e00e055559eea9971422820a9d4b Mon Sep 17 00:00:00 2001
From: bubnikv <bubnikv@gmail.com>
Date: Tue, 6 Jun 2017 10:36:14 +0200
Subject: [PATCH] Testing for the required parameter combinations before
 enabling the wipe tower. The wipe tower needs to be made more general in the
 future to overcome these limitations.

---
 lib/Slic3r/GUI/Tab.pm      | 42 ++++++++++++++++++++++++++++++++++----
 xs/src/libslic3r/Print.cpp | 10 +++++++++
 2 files changed, 48 insertions(+), 4 deletions(-)

diff --git a/lib/Slic3r/GUI/Tab.pm b/lib/Slic3r/GUI/Tab.pm
index 0749e3fca..35a7f6682 100644
--- a/lib/Slic3r/GUI/Tab.pm
+++ b/lib/Slic3r/GUI/Tab.pm
@@ -841,19 +841,53 @@ sub _update {
             . "- no ensure_vertical_shell_thickness\n"
             . "\nShall I adjust those settings in order to enable Spiral Vase?",
             'Spiral Vase', wxICON_WARNING | wxYES | wxNO);
+        my $new_conf = Slic3r::Config->new;
         if ($dialog->ShowModal() == wxID_YES) {
-            my $new_conf = Slic3r::Config->new;
             $new_conf->set("perimeters", 1);
             $new_conf->set("top_solid_layers", 0);
             $new_conf->set("fill_density", 0);
             $new_conf->set("support_material", 0);
             $new_conf->set("ensure_vertical_shell_thickness", 0);
-            $self->load_config($new_conf);
         } else {
-            my $new_conf = Slic3r::Config->new;
             $new_conf->set("spiral_vase", 0);
-            $self->load_config($new_conf);
         }
+        $self->load_config($new_conf);
+    }
+
+    if ($config->wipe_tower && 
+        ($config->first_layer_height != 0.2 || ($config->layer_height != 0.15 && $config->layer_height != 0.2))) {
+        my $dialog = Wx::MessageDialog->new($self,
+            "The Wipe Tower currently supports only:\n"
+            . "- first layer height 0.2mm\n"
+            . "- layer height 0.15mm or 0.2mm\n"
+            . "\nShall I adjust those settings in order to enable the Wipe Tower?",
+            'Wipe Tower', wxICON_WARNING | wxYES | wxNO);
+        my $new_conf = Slic3r::Config->new;
+        if ($dialog->ShowModal() == wxID_YES) {
+            $new_conf->set("first_layer_height", 0.2);
+            $new_conf->set("layer_height", 0.15) if $config->layer_height != 0.15 && $config->layer_height != 0.2;
+        } else {
+            $new_conf->set("wipe_tower", 0);
+        }
+        $self->load_config($new_conf);
+    }
+
+    if ($config->wipe_tower && $config->support_material && $config->support_material_contact_distance > 0. && 
+        ($config->support_material_extruder != 0 || $config->support_material_interface_extruder != 0)) {
+        my $dialog = Wx::MessageDialog->new($self,
+            "The Wipe Tower currently supports the non-soluble supports only\n"
+            . "if they are printed with the current extruder without triggering a tool change.\n"
+            . "(both support_material_extruder and support_material_interface_extruder need to be set to 0).\n"
+            . "\nShall I adjust those settings in order to enable the Wipe Tower?",
+            'Wipe Tower', wxICON_WARNING | wxYES | wxNO);
+        my $new_conf = Slic3r::Config->new;
+        if ($dialog->ShowModal() == wxID_YES) {
+            $new_conf->set("support_material_extruder", 0);
+            $new_conf->set("support_material_interface_extruder", 0);
+        } else {
+            $new_conf->set("wipe_tower", 0);
+        }
+        $self->load_config($new_conf);
     }
 
     if ($keys_modified->{'layer_height'}) {
diff --git a/xs/src/libslic3r/Print.cpp b/xs/src/libslic3r/Print.cpp
index 6c13513c0..81718d7bb 100644
--- a/xs/src/libslic3r/Print.cpp
+++ b/xs/src/libslic3r/Print.cpp
@@ -564,6 +564,16 @@ std::string Print::validate() const
         if (this->regions.size() > 1)
             return "The Spiral Vase option can only be used when printing single material objects.";
     }
+
+    if (this->config.wipe_tower) {
+        for (auto dmr : this->config.nozzle_diameter.values)
+            if (std::abs(dmr - 0.4) > EPSILON)
+                return "The Wipe Tower is currently only supported for the 0.4mm nozzle diameter.";
+        if (this->config.gcode_flavor != gcfRepRap)
+            return "The Wipe Tower is currently only supported for the RepRap (Marlin / Sprinter) G-code flavor.";
+        if (! this->config.use_relative_e_distances)
+            return "The Wipe Tower is currently only supported with the relative extruder addressing (use_relative_e_distances=1).";
+    }
     
     {
         // find the smallest nozzle diameter