1 /*
2 * Copyright (C) 2005-2007 Authors:
3 * Ted Gould <ted@gould.cx>
4 * Johan Engelen <johan@shouraizou.nl> *
5 * Released under GNU GPL, read the file 'COPYING' for more information
6 */
8 #ifdef HAVE_CONFIG_H
9 # include "config.h"
10 #endif
12 #include <gtkmm/adjustment.h>
13 #include <gtkmm/box.h>
14 #include <gtkmm/spinbutton.h>
16 #include <xml/node.h>
18 #include "extension.h"
19 #include "paramstring.h"
21 namespace Inkscape {
22 namespace Extension {
25 /** \brief Free the allocated data. */
26 ParamString::~ParamString(void)
27 {
28 g_free(_value);
29 }
31 /** \brief A function to set the \c _value
32 \param in The value to set to
33 \param doc A document that should be used to set the value.
34 \param node The node where the value may be placed
36 This function sets the internal value, but it also sets the value
37 in the preferences structure. To put it in the right place, \c PREF_DIR
38 and \c pref_name() are used.
40 To copy the data into _value the old memory must be free'd first.
41 It is important to note that \c g_free handles \c NULL just fine. Then
42 the passed in value is duplicated using \c g_strdup().
43 */
44 const gchar *
45 ParamString::set (const gchar * in, SPDocument * doc, Inkscape::XML::Node * node)
46 {
47 if (in == NULL) return NULL; /* Can't have NULL string */
49 if (_value != NULL)
50 g_free(_value);
51 _value = g_strdup(in);
53 gchar * prefname = this->pref_name();
54 prefs_set_string_attribute(PREF_DIR, prefname, _value);
55 g_free(prefname);
57 return _value;
58 }
60 /** \brief Return the value as a string */
61 Glib::ustring *
62 ParamString::string (void)
63 {
64 if (_value == NULL)
65 return new Glib::ustring("");
67 // FIXME: I think the string should NOT be escaped. Just put between "..."
68 // Otherwise \frac{1}{2} will become \\frac{1}{2} and then the LaTeX effect won't work....
69 //gchar * esc = g_strescape(_value, NULL);
70 Glib::ustring escaped(_value);
71 //g_free(esc);
73 #ifdef ESCAPE_DOLLAR_COMMANDLINE // escape the dollar sign
74 Glib::ustring::iterator i;
75 for (i = escaped.begin(); i != escaped.end(); ++i) {
76 if ( *i == '$') {
77 i = escaped.insert(i, '\\');
78 i++;
79 }
80 }
81 #endif
83 Glib::ustring * mystring = new Glib::ustring("");
84 *mystring += "\"";
85 *mystring += escaped;
86 *mystring += "\"";
88 return mystring;
89 }
91 /** \brief Initialize the object, to do that, copy the data. */
92 ParamString::ParamString (const gchar * name, const gchar * guitext, const gchar * desc, const Parameter::_scope_t scope, Inkscape::Extension::Extension * ext, Inkscape::XML::Node * xml) :
93 Parameter(name, guitext, desc, scope, ext), _value(NULL)
94 {
95 const char * defaultval = NULL;
96 if (sp_repr_children(xml) != NULL)
97 defaultval = sp_repr_children(xml)->content();
99 gchar * pref_name = this->pref_name();
100 const gchar * paramval = prefs_get_string_attribute(PREF_DIR, pref_name);
101 g_free(pref_name);
103 if (paramval != NULL)
104 defaultval = paramval;
105 if (defaultval != NULL)
106 _value = g_strdup(defaultval);
108 return;
109 }
111 /** \brief A special category of Gtk::Entry to handle string parameteres */
112 class ParamStringEntry : public Gtk::Entry {
113 private:
114 ParamString * _pref;
115 SPDocument * _doc;
116 Inkscape::XML::Node * _node;
117 sigc::signal<void> * _changeSignal;
118 public:
119 /** \brief Build a string preference for the given parameter
120 \param pref Where to get the string from, and where to put it
121 when it changes.
122 */
123 ParamStringEntry (ParamString * pref, SPDocument * doc, Inkscape::XML::Node * node, sigc::signal<void> * changeSignal) :
124 Gtk::Entry(), _pref(pref), _doc(doc), _node(node), _changeSignal(changeSignal) {
125 if (_pref->get(NULL, NULL) != NULL)
126 this->set_text(Glib::ustring(_pref->get(NULL, NULL)));
127 this->signal_changed().connect(sigc::mem_fun(this, &ParamStringEntry::changed_text));
128 };
129 void changed_text (void);
130 };
133 /** \brief Respond to the text box changing
135 This function responds to the box changing by grabbing the value
136 from the text box and putting it in the parameter.
137 */
138 void
139 ParamStringEntry::changed_text (void)
140 {
141 Glib::ustring data = this->get_text();
142 _pref->set(data.c_str(), _doc, _node);
143 if (_changeSignal != NULL) {
144 _changeSignal->emit();
145 }
146 return;
147 }
149 /**
150 \brief Creates a text box for the string parameter
152 Builds a hbox with a label and a text box in it.
153 */
154 Gtk::Widget *
155 ParamString::get_widget (SPDocument * doc, Inkscape::XML::Node * node, sigc::signal<void> * changeSignal)
156 {
157 Gtk::HBox * hbox = Gtk::manage(new Gtk::HBox(false, 4));
159 Gtk::Label * label = Gtk::manage(new Gtk::Label(_(_text), Gtk::ALIGN_LEFT));
160 label->show();
161 hbox->pack_start(*label, false, false);
163 ParamStringEntry * textbox = new ParamStringEntry(this, doc, node, changeSignal);
164 textbox->show();
165 hbox->pack_start(*textbox, true, true);
167 hbox->show();
169 return dynamic_cast<Gtk::Widget *>(hbox);
170 }
172 } /* namespace Extension */
173 } /* namespace Inkscape */