increase stroke preview pad, fix message box capture behavior

src/node.cpp

@@ -400,7 +400,9 @@ void Node::mouse_capture()
             // so preserve direct parents of this
 
             // also clear the whole stack
-            s.clear();
+            //s.clear();
+
+            s.push_back(c);
         }
     }
     

src/node_message_box.cpp

@@ -22,6 +22,7 @@ void NodeMessageBox::init()
     btn_ok->on_click = [&](Node*) { destroy(); };
     btn_cancel = m_template->find<NodeButton>("btn-cancel");
     on_submit = btn_cancel->on_click = [&](Node*) { destroy(); };
+    m_capture_children = false; // don't capture children events on mouse_capture
 }
 
 kEventResult NodeMessageBox::handle_event(Event* e)
@@ -44,3 +45,9 @@ kEventResult NodeMessageBox::handle_event(Event* e)
     }
     return kEventResult::Consumed;
 }
+
+void NodeMessageBox::added(Node* parent)
+{
+    Node::added(parent);
+    mouse_capture();
+}

src/node_message_box.h

@@ -15,4 +15,5 @@ public:
     virtual Node* clone_instantiate() const override;
     virtual void init() override;
     virtual kEventResult handle_event(Event* e) override;
+    virtual void added(Node* parent) override;
 };

src/node_stroke_preview.cpp

@@ -283,9 +283,10 @@ void NodeStrokePreview::draw_stroke()
     }
 
     {
-        float pad = glm::max(glm::min(m_stroke.m_max_size, m_brush->m_tip_size) / 2.f, 10.f);
+
+        float pad = (5.f + glm::max(glm::min(m_stroke.m_max_size, m_brush->m_tip_size) / 2.f, 10.f)) * App::I.zoom;
         if (b->m_tip_size_pressure)
-            pad = 10.f;
+            pad = 10.f * App::I.zoom;
         float w = m_size.x * App::I.zoom;
         float h = m_size.y * App::I.zoom;
         std::vector<glm::vec2> kp = {