diff options
Diffstat (limited to 'src/extension/paramenum.cpp')
| -rw-r--r-- | src/extension/paramenum.cpp | 218 |
1 files changed, 218 insertions, 0 deletions
diff --git a/src/extension/paramenum.cpp b/src/extension/paramenum.cpp new file mode 100644 index 000000000..85656343d --- /dev/null +++ b/src/extension/paramenum.cpp @@ -0,0 +1,218 @@ +/** \file
+ * extension parameter for enumerations.
+ *
+ * It uses a Gtk:ComboBoxText widget in the extension UI.
+ */
+
+/*
+ * Author:
+ * Johan Engelen <johan@shouraizou.nl>
+ *
+ * Copyright (C) 2006 Author
+ *
+ * Released under GNU GPL, read the file 'COPYING' for more information
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+
+#include <gtkmm/box.h>
+#include <gtkmm/comboboxtext.h>
+#include <gtkmm/tooltips.h>
+#include <gtkmm/label.h>
+
+#include <glibmm/i18n.h>
+
+#include <xml/node.h>
+
+#include "extension.h"
+#include "prefs-utils.h"
+#include "document-private.h"
+#include "sp-object.h"
+
+#include "paramenum.h"
+
+/** \brief The root directory in the preferences database for extension
+ related parameters. */
+#define PREF_DIR "extensions"
+
+namespace Inkscape {
+namespace Extension {
+
+ParamComboBox::ParamComboBox (const gchar * name, const gchar * guitext, const gchar * desc, const Parameter::_scope_t scope, Inkscape::Extension::Extension * ext, Inkscape::XML::Node * xml) :
+ Parameter(name, guitext, desc, scope, ext)
+{
+ choices = NULL;
+ _value = NULL;
+
+ // Read XML tree to add enumeration items:
+ // printf("Extension Constructor: ");
+ if (xml != NULL) {
+ Inkscape::XML::Node *child_repr = sp_repr_children(xml);
+ while (child_repr != NULL) {
+ char const * chname = child_repr->name();
+ if (!strcmp(chname, "item")) {
+ Glib::ustring * newitem = NULL;
+ const char * contents = sp_repr_children(child_repr)->content();
+ if (contents != NULL)
+ newitem = new Glib::ustring(contents);
+ if (newitem != NULL) choices = g_slist_append(choices, newitem);
+ }
+ child_repr = sp_repr_next(child_repr);
+ }
+ }
+
+ // Initialize _value with the default value from xml
+ // for simplicity : default to the contents of the first xml-child
+ const char * defaultval = NULL;
+ if (sp_repr_children(sp_repr_children(xml)) != NULL)
+ defaultval = sp_repr_children(sp_repr_children(xml))->content();
+
+ gchar * pref_name = this->pref_name();
+ const gchar * paramval = prefs_get_string_attribute(PREF_DIR, pref_name);
+ g_free(pref_name);
+
+ if (paramval != NULL)
+ defaultval = paramval;
+ if (defaultval != NULL)
+ _value = g_strdup(defaultval); // allocate space for _value
+
+ return;
+}
+
+ParamComboBox::~ParamComboBox (void)
+{
+ //destroy choice strings
+ for (GSList * list = choices; list != NULL; list = g_slist_next(list)) {
+ Glib::ustring * text = reinterpret_cast<Glib::ustring *>(list->data);
+ delete text;
+ }
+ g_slist_free(choices);
+
+ g_free(_value);
+}
+
+
+/** \brief A function to set the \c _value
+ \param in The value to set
+ \param doc A document that should be used to set the value.
+ \param node The node where the value may be placed
+
+ This function sets ONLY the internal value, but it also sets the value
+ in the preferences structure. To put it in the right place, \c PREF_DIR
+ and \c pref_name() are used.
+
+ To copy the data into _value the old memory must be free'd first.
+ It is important to note that \c g_free handles \c NULL just fine. Then
+ the passed in value is duplicated using \c g_strdup().
+*/
+const gchar *
+ParamComboBox::set (const gchar * in, SPDocument * doc, Inkscape::XML::Node * node)
+{
+ if (in == NULL) return NULL; /* Can't have NULL string */
+
+ if (_value != NULL)
+ g_free(_value);
+ _value = g_strdup(in);
+
+ gchar * prefname = this->pref_name();
+ prefs_set_string_attribute(PREF_DIR, prefname, _value);
+ g_free(prefname);
+
+ return _value;
+}
+
+
+/**
+ \brief A function to get the currentpage and the parameters in a string form
+ \return A string with the 'value' and all the parameters on all pages as command line arguments
+*/
+Glib::ustring *
+ParamComboBox::string (void)
+{
+ Glib::ustring * param_string = new Glib::ustring("");
+
+ *param_string += "\"";
+ *param_string += _value;
+ *param_string += "\"";
+
+ return param_string;
+}
+
+/** \brief A special category of Gtk::Entry to handle string parameteres */
+class ParamComboBoxEntry : public Gtk::ComboBoxText {
+private:
+ ParamComboBox * _pref;
+ SPDocument * _doc;
+ Inkscape::XML::Node * _node;
+public:
+ /** \brief Build a string preference for the given parameter
+ \param pref Where to get the string from, and where to put it
+ when it changes.
+ */
+ ParamComboBoxEntry (ParamComboBox * pref, SPDocument * doc, Inkscape::XML::Node * node) :
+ Gtk::ComboBoxText(), _pref(pref), _doc(doc), _node(node) {
+ this->signal_changed().connect(sigc::mem_fun(this, &ParamComboBoxEntry::changed));
+ };
+ void changed (void);
+};
+
+/** \brief Respond to the text box changing
+
+ This function responds to the box changing by grabbing the value
+ from the text box and putting it in the parameter.
+*/
+void
+ParamComboBoxEntry::changed (void)
+{
+ Glib::ustring data = this->get_active_text();
+ _pref->set(data.c_str(), _doc, _node);
+ return;
+}
+
+
+
+/**
+ \brief Creates a combobox widget for an enumeration parameter
+*/
+Gtk::Widget *
+ParamComboBox::get_widget (SPDocument * doc, Inkscape::XML::Node * node)
+{
+ Gtk::HBox * hbox = Gtk::manage(new Gtk::HBox(false, 4));
+
+ Gtk::Label * label = Gtk::manage(new Gtk::Label(_(_text), Gtk::ALIGN_LEFT));
+ label->show();
+ hbox->pack_start(*label, false, false);
+
+ ParamComboBoxEntry * combo = Gtk::manage(new ParamComboBoxEntry(this, doc, node));
+ // add choice strings:
+ for (GSList * list = choices; list != NULL; list = g_slist_next(list)) {
+ Glib::ustring * text = reinterpret_cast<Glib::ustring *>(list->data);
+ combo->append_text(*text);
+ }
+ combo->set_active_text(Glib::ustring(_value));
+
+ combo->show();
+ hbox->pack_start(*combo, true, true);
+
+ hbox->show();
+
+ return dynamic_cast<Gtk::Widget *>(hbox);
+}
+
+
+} /* namespace Extension */
+} /* namespace Inkscape */
+
+/*
+ Local Variables:
+ mode:c++
+ c-file-style:"stroustrup"
+ c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+ indent-tabs-mode:nil
+ fill-column:99
+ End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :
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