1 /*
2 * Code for handling extensions (i.e., scripts)
3 *
4 * Authors:
5 * Bryce Harrington <bryce@osdl.org>
6 * Ted Gould <ted@gould.cx>
7 *
8 * Copyright (C) 2002-2005 Authors
9 *
10 * Released under GNU GPL, read the file 'COPYING' for more information
11 */
13 #ifndef __INKSCAPE_EXTENSION_IMPEMENTATION_SCRIPT_H__
14 #define __INKSCAPE_EXTENSION_IMPEMENTATION_SCRIPT_H__
16 #include "implementation.h"
17 #include <gtkmm/messagedialog.h>
19 namespace Inkscape {
20 namespace XML {
21 class Node;
22 }
23 }
26 namespace Inkscape {
27 namespace Extension {
28 namespace Implementation {
32 /**
33 * Utility class used for loading and launching script extensions
34 */
35 class Script : public Implementation {
37 public:
39 /**
40 *
41 */
42 Script(void);
44 /**
45 *
46 */
47 virtual ~Script();
50 /**
51 *
52 */
53 virtual bool load(Inkscape::Extension::Extension *module);
55 /**
56 *
57 */
58 virtual void unload(Inkscape::Extension::Extension *module);
60 /**
61 *
62 */
63 virtual bool check(Inkscape::Extension::Extension *module);
65 ImplementationDocumentCache * newDocCache (Inkscape::Extension::Extension * ext, Inkscape::UI::View::View * view);
67 /**
68 *
69 */
70 virtual Gtk::Widget *prefs_input(Inkscape::Extension::Input *module,
71 gchar const *filename);
73 /**
74 *
75 */
76 virtual SPDocument *open(Inkscape::Extension::Input *module,
77 gchar const *filename);
79 /**
80 *
81 */
82 virtual Gtk::Widget *prefs_output(Inkscape::Extension::Output *module);
84 /**
85 *
86 */
87 virtual void save(Inkscape::Extension::Output *module,
88 SPDocument *doc,
89 gchar const *filename);
90 /**
91 *
92 */
93 virtual Gtk::Widget *prefs_effect(Inkscape::Extension::Effect *module,
94 Inkscape::UI::View::View * view,
95 sigc::signal<void> * changeSignal,
96 ImplementationDocumentCache * docCache);
98 /**
99 *
100 */
101 virtual void effect(Inkscape::Extension::Effect *module,
102 Inkscape::UI::View::View *doc,
103 ImplementationDocumentCache * docCache);
105 virtual bool cancelProcessing (void);
107 private:
108 bool _canceled;
109 Glib::Pid _pid;
110 Glib::RefPtr<Glib::MainLoop> _main_loop;
112 /**
113 * The command that has been dirived from
114 * the configuration file with appropriate directories
115 */
116 std::list<std::string> command;
118 /**
119 * This is the extension that will be used
120 * as the helper to read in or write out the
121 * data
122 */
123 Glib::ustring helper_extension;
125 /**
126 * Just a quick function to find and resolve relative paths for
127 * the incoming scripts
128 */
129 Glib::ustring solve_reldir (Inkscape::XML::Node *reprin);
131 /**
132 *
133 */
134 bool check_existance (const Glib::ustring &command);
136 /**
137 *
138 */
139 void copy_doc (Inkscape::XML::Node * olddoc,
140 Inkscape::XML::Node * newdoc);
142 /**
143 *
144 */
145 void checkStderr (const Glib::ustring &filename,
146 Gtk::MessageType type,
147 const Glib::ustring &message);
150 class file_listener {
151 Glib::ustring _string;
152 sigc::connection _conn;
153 Glib::RefPtr<Glib::IOChannel> _channel;
154 Glib::RefPtr<Glib::MainLoop> _main_loop;
155 bool _dead;
157 public:
158 file_listener () : _dead(false) { };
159 ~file_listener () {
160 _conn.disconnect();
161 };
163 bool isDead () { return _dead; }
165 void init (int fd, Glib::RefPtr<Glib::MainLoop> main) {
166 _channel = Glib::IOChannel::create_from_fd(fd);
167 _channel->set_encoding();
168 _conn = Glib::signal_io().connect(sigc::mem_fun(*this, &file_listener::read), _channel, Glib::IO_IN | Glib::IO_HUP | Glib::IO_ERR);
169 _main_loop = main;
171 return;
172 };
174 bool read (Glib::IOCondition condition) {
175 if (condition != Glib::IO_IN) {
176 _main_loop->quit();
177 return false;
178 }
180 Glib::IOStatus status;
181 Glib::ustring out;
182 status = _channel->read_line(out);
183 _string += out;
185 if (status != Glib::IO_STATUS_NORMAL) {
186 _main_loop->quit();
187 _dead = true;
188 return false;
189 }
191 return true;
192 };
194 // Note, doing a copy here, on purpose
195 Glib::ustring string (void) { return _string; };
197 void toFile (const Glib::ustring &name) {
198 Glib::RefPtr<Glib::IOChannel> stdout_file = Glib::IOChannel::create_from_file(name, "w");
199 stdout_file->write(_string);
200 return;
201 };
202 };
204 int execute (const std::list<std::string> &in_command,
205 const std::list<std::string> &in_params,
206 const Glib::ustring &filein,
207 file_listener &fileout);
208 }; // class Script
214 } // namespace Implementation
215 } // namespace Extension
216 } // namespace Inkscape
218 #endif /* __INKSCAPE_EXTENSION_IMPEMENTATION_SCRIPT_H__ */
220 /*
221 Local Variables:
222 mode:c++
223 c-file-style:"stroustrup"
224 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
225 indent-tabs-mode:nil
226 fill-column:99
227 End:
228 */
229 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :