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 "paramint.h"
21 namespace Inkscape {
22 namespace Extension {
25 /** \brief Use the superclass' allocator and set the \c _value */
26 ParamInt::ParamInt (const gchar * name, const gchar * guitext, const gchar * desc, const Parameter::_scope_t scope, Inkscape::Extension::Extension * ext, Inkscape::XML::Node * xml) :
27 Parameter(name, guitext, desc, scope, ext), _value(0), _min(0), _max(10)
28 {
29 const char * defaultval = NULL;
30 if (sp_repr_children(xml) != NULL)
31 defaultval = sp_repr_children(xml)->content();
32 if (defaultval != NULL) {
33 _value = atoi(defaultval);
34 }
36 const char * maxval = xml->attribute("max");
37 if (maxval != NULL)
38 _max = atoi(maxval);
40 const char * minval = xml->attribute("min");
41 if (minval != NULL)
42 _min = atoi(minval);
44 /* We're handling this by just killing both values */
45 if (_max < _min) {
46 _max = 10;
47 _min = 0;
48 }
50 gchar * pref_name = this->pref_name();
51 _value = prefs_get_int_attribute(PREF_DIR, pref_name, _value);
52 g_free(pref_name);
54 // std::cout << "New Int:: value: " << _value << " max: " << _max << " min: " << _min << std::endl;
56 if (_value > _max) _value = _max;
57 if (_value < _min) _value = _min;
59 return;
60 }
62 /** \brief A function to set the \c _value
63 \param in The value to set to
64 \param doc A document that should be used to set the value.
65 \param node The node where the value may be placed
67 This function sets the internal value, but it also sets the value
68 in the preferences structure. To put it in the right place, \c PREF_DIR
69 and \c pref_name() are used.
70 */
71 int
72 ParamInt::set (int in, SPDocument * doc, Inkscape::XML::Node * node)
73 {
74 _value = in;
75 if (_value > _max) _value = _max;
76 if (_value < _min) _value = _min;
78 gchar * prefname = this->pref_name();
79 prefs_set_int_attribute(PREF_DIR, prefname, _value);
80 g_free(prefname);
82 return _value;
83 }
85 /** \brief A class to make an adjustment that uses Extension params */
86 class ParamIntAdjustment : public Gtk::Adjustment {
87 /** The parameter to adjust */
88 ParamInt * _pref;
89 SPDocument * _doc;
90 Inkscape::XML::Node * _node;
91 sigc::signal<void> * _changeSignal;
92 public:
93 /** \brief Make the adjustment using an extension and the string
94 describing the parameter. */
95 ParamIntAdjustment (ParamInt * param, SPDocument * doc, Inkscape::XML::Node * node, sigc::signal<void> * changeSignal) :
96 Gtk::Adjustment(0.0, param->min(), param->max(), 1.0), _pref(param), _doc(doc), _node(node), _changeSignal(changeSignal) {
97 this->set_value(_pref->get(NULL, NULL) /* \todo fix */);
98 this->signal_value_changed().connect(sigc::mem_fun(this, &ParamIntAdjustment::val_changed));
99 return;
100 };
102 void val_changed (void);
103 }; /* class ParamIntAdjustment */
105 /** \brief A function to respond to the value_changed signal from the
106 adjustment.
108 This function just grabs the value from the adjustment and writes
109 it to the parameter. Very simple, but yet beautiful.
110 */
111 void
112 ParamIntAdjustment::val_changed (void)
113 {
114 //std::cout << "Value Changed to: " << this->get_value() << std::endl;
115 _pref->set((int)this->get_value(), _doc, _node);
116 if (_changeSignal != NULL) {
117 _changeSignal->emit();
118 }
119 return;
120 }
122 /**
123 \brief Creates a Int Adjustment for a int parameter
125 Builds a hbox with a label and a int adjustment in it.
126 */
127 Gtk::Widget *
128 ParamInt::get_widget (SPDocument * doc, Inkscape::XML::Node * node, sigc::signal<void> * changeSignal)
129 {
130 Gtk::HBox * hbox = Gtk::manage(new Gtk::HBox(false, 4));
132 Gtk::Label * label = Gtk::manage(new Gtk::Label(_(_text), Gtk::ALIGN_LEFT));
133 label->show();
134 hbox->pack_start(*label, true, true);
136 ParamIntAdjustment * fadjust = Gtk::manage(new ParamIntAdjustment(this, doc, node, changeSignal));
137 Gtk::SpinButton * spin = Gtk::manage(new Gtk::SpinButton(*fadjust, 1.0, 0));
138 spin->show();
139 hbox->pack_start(*spin, false, false);
141 hbox->show();
143 return dynamic_cast<Gtk::Widget *>(hbox);
144 }
146 /** \brief Return the value as a string */
147 Glib::ustring *
148 ParamInt::string (void)
149 {
150 char startstring[32];
151 sprintf(startstring, "%d", _value);
152 Glib::ustring * mystring = new Glib::ustring(startstring);
153 return mystring;
154 }
156 } /* namespace Extension */
157 } /* namespace Inkscape */