Implemented solution for issue #1741 (Feature request: tooltip string for PCell parameter)

src/db/db/built-in-macros/pcell_declaration_helper.lym

@@ -118,6 +118,9 @@ Optional, named parameters are
   @li 
     @b:unit@/b: the unit string
   @/li
+  @li 
+    @btooltip@/b: the tool tip text displayed on the edit fields and labels
+  @/li
   @li 
     @b:min_value@/b: the minimum value (effective for numerical types and if no choices are present)
   @/li
@@ -378,6 +381,7 @@ module RBA
       
       # set additional attributes of the parameters
       args[:default] && pdecl.default = args[:default]
+      args[:tooltip] && pdecl.tooltip = args[:tooltip]
       args[:hidden] && pdecl.hidden = args[:hidden]
       args[:readonly] && pdecl.readonly = args[:readonly]
       args[:unit] && pdecl.unit = args[:unit]

src/db/db/built-in-pymacros/pcell_declaration_helper.lym

@@ -127,6 +127,9 @@ Optional, named parameters are
   @li 
     @bunit@/b: the unit string
   @/li
+  @li 
+    @btooltip@/b: the tool tip text displayed on the edit fields and labels
+  @/li
   @li 
     @bmin_value@/b: the minimum value (effective for numerical types and if no choices are present)
   @/li

src/db/db/dbPCellDeclaration.h

@@ -168,6 +168,22 @@ public:
     m_description = description;
   }
 
+  /**
+   *  @brief Getter for the tooltip property
+   */
+  const std::string &get_tooltip () const
+  {
+    return m_tooltip;
+  }
+
+  /**
+   *  @brief Setter for the tooltip property
+   */
+  void set_tooltip (const std::string &tooltip)
+  {
+    m_tooltip = tooltip;
+  }
+
   /**
    *  @brief Getter for the type property
    */
@@ -331,6 +347,7 @@ public:
            m_type == d.m_type &&
            m_name == d.m_name &&
            m_description == d.m_description &&
+           m_tooltip == d.m_tooltip &&
            m_unit == d.m_unit &&
            m_min_value == d.m_min_value &&
            m_max_value == d.m_max_value;
@@ -343,7 +360,7 @@ private:
   bool m_hidden, m_readonly;
   type m_type;
   std::string m_name;
-  std::string m_description, m_unit;
+  std::string m_description, m_tooltip, m_unit;
   tl::Variant m_min_value, m_max_value;
 };
 

src/db/db/gsiDeclDbLibrary.cc

@@ -819,6 +819,14 @@ Class<db::PCellParameterDeclaration> decl_PCellParameterDeclaration ("db", "PCel
   gsi::method ("description=", &db::PCellParameterDeclaration::set_description, gsi::arg ("description"),
     "@brief Sets the description\n"
   ) +
+  gsi::method ("tooltip", &db::PCellParameterDeclaration::get_tooltip,
+    "@brief Gets the tool tip text\n"
+    "This attribute has been introduced in version 0.29.3."
+  ) +
+  gsi::method ("tooltip=", &db::PCellParameterDeclaration::set_tooltip, gsi::arg ("tooltip"),
+    "@brief Sets the tool tip text\n"
+    "This attribute has been introduced in version 0.29.3."
+  ) +
   gsi::method ("hidden?", &db::PCellParameterDeclaration::is_hidden,
     "@brief Returns true, if the parameter is a hidden parameter that should not be shown in the user interface\n"
     "By making a parameter hidden, it is possible to create internal parameters which cannot be\n"

src/edt/edt/edtPCellParametersPage.cc

@@ -416,8 +416,7 @@ PCellParametersPage::setup (lay::LayoutViewBase *view, int cv_index, const db::P
         leader = tl::sprintf ("[%s] ", p->get_name ());
       }
 
-      QLabel *l = new QLabel (tl::to_qstring (leader + description + range), inner_frame); 
+      QLabel *l = new QLabel (tl::to_qstring (leader + description + range), inner_frame);
-
       inner_grid->addWidget (l, row, 1);
       m_all_widgets.back ().push_back (l);
 
@@ -975,6 +974,7 @@ PCellParametersPage::update_widgets_from_states (const db::ParameterStates &stat
   for (std::vector<db::PCellParameterDeclaration>::const_iterator p = pcp.begin (); p != pcp.end () && i < m_widgets.size (); ++p, ++i) {
 
     const std::string &name = p->get_name ();
+    const std::string &static_tooltip = p->get_tooltip ();
     const db::ParameterState &ps = states.parameter (name);
 
     if (m_widgets [i]) {
@@ -994,7 +994,11 @@ PCellParametersPage::update_widgets_from_states (const db::ParameterStates &stat
       if (*w != m_icon_widgets [i]) {
         (*w)->setVisible (ps.is_visible ());
       }
-      (*w)->setToolTip (tl::to_qstring (ps.tooltip ()));
+      if (ps.tooltip ().empty ()) {
+        (*w)->setToolTip (tl::to_qstring (static_tooltip));
+      } else {
+        (*w)->setToolTip (tl::to_qstring (ps.tooltip ()));
+      }
     }
 
     if (m_icon_widgets [i]) {

src/pymod/distutils_src/klayout/db/pcell_declaration_helper.py

@@ -66,7 +66,7 @@ class _PCellDeclarationHelperMixin:
     self.layer = None
     self.cell = None
 
-  def param(self, name, value_type, description, hidden = False, readonly = False, unit = None, default = None, choices = None, min_value = None, max_value = None):
+  def param(self, name, value_type, description, hidden = False, readonly = False, unit = None, default = None, choices = None, min_value = None, max_value = None, tooltip = None):
     """
     Defines a parameter
       name         -> the short name of the parameter
@@ -79,6 +79,7 @@ class _PCellDeclarationHelperMixin:
       min_value   -> the minimum value (only effective for numerical types and if no choices are present)
       max_value   -> the maximum value (only effective for numerical types and if no choices are present)
       default     -> the default value
+      tooltip     -> tool tip text
       choices     -> ([ [ d, v ], ...) choice descriptions/value for choice type
     this method defines accessor methods for the parameters
       {name}       -> read accessor
@@ -104,6 +105,8 @@ class _PCellDeclarationHelperMixin:
     pdecl.readonly = readonly
     if not (default is None):
       pdecl.default = default
+    if not (tooltip is None):
+      pdecl.tooltip = tooltip
     pdecl.min_value = min_value
     pdecl.max_value = max_value
     if not (unit is None):

testdata/ruby/dbPCells.rb

@@ -226,6 +226,8 @@ class DBPCellAPI_TestClass < TestBase
     assert_equal(decl.description, "d")
     decl.unit = "u"
     assert_equal(decl.unit, "u")
+    decl.tooltip = "ttt"
+    assert_equal(decl.tooltip, "ttt")
     decl.type = RBA::PCellParameterDeclaration::TypeBoolean
     assert_equal(decl.type, RBA::PCellParameterDeclaration::TypeBoolean)
     decl.default = true