Card data in images (start)

* Add uuid implementation

* Simplify uid implementation

* Check for uid conflicts upon adding/copying cards

* Remove unnecessary checks

these are already checked as part of the first loop, since they were added to set.cards

* Implement card linking

* refactor to avoid triple loop

* Start link visualization

* Continue link visualization

* formatting

* add missing locale entries

* improve layout

* improve UI refresh

* copy links when copying cards

* implement second face editor

* refactor using macros

* get references

* pasting multiple cards and links

* start refactoring editors

* continue refactoring editors

* continue refactoring editors again

* finish refactoring editors

* refresh card list on link editor event

* tweak event handling

* Add insert_image script function

* change parameter type

* add script functions to get cards

* add dimensions_of script function

calculate both dimensions simultaneously while rendering the image only once.

* save value even if not editable

* add get_mse_locale script function

* Change zoom scale choices

* bug fixes

* Scale symbol spacing with font size

* sync locales

* standardize line ending

* handle links in new_card

* initial

waiting on wxWidgets 3.3.1

* update comment

* store rect in image filename

* store rect in temp file name

* Update package.cpp

* change line endings

src/data/field.cpp

@@ -113,9 +113,14 @@ Style::Style(const FieldP& field)
   , visible(true)
   , automatic_side(AUTO_UNKNOWN)
   , content_dependent(false)
-{}
+{
+  field->styleP = this;
+}
 
-Style::~Style() {}
+Style::~Style()
+{
+  fieldP->styleP = nullptr;
+}
 
 IMPLEMENT_REFLECTION(Style) {
   REFLECT(z_index);
@@ -133,6 +138,7 @@ IMPLEMENT_REFLECTION(Style) {
 
 void init_object(const FieldP& field, StyleP& style) {
   if (!style) style = field->newStyle();
+  field->styleP = style;
 }
 template <> StyleP read_new<Style>(Reader&) {
   throw InternalError(_("IndexMap contains nullptr StyleP the application should have crashed already"));
@@ -262,6 +268,18 @@ void mark_dependency_member(const Style& style, const String& name, const Depend
   style.markDependencyMember(name,dep);
 }
 
+String Style::getRect() {
+  return _("---") +
+         wxString::Format(wxT("%i"), (int)(left)) +
+         _("-") +
+         wxString::Format(wxT("%i"), (int)(top)) +
+         _("-") +
+         wxString::Format(wxT("%i"), (int)(width)) +
+         _("-") +
+         wxString::Format(wxT("%i"), (int)(height)) +
+         _("---");
+}
+
 // ----------------------------------------------------------------------------- : StyleListener
 
 void Style::addListener(StyleListener* listener) {