1 #define INKSCAPE_LIVEPATHEFFECT_PARAMETER_PATH_CPP
3 /*
4 * Copyright (C) Johan Engelen 2007 <j.b.c.engelen@utwente.nl>
5 *
6 * Released under GNU GPL, read the file 'COPYING' for more information
7 */
9 #include "live_effects/parameter/path.h"
10 #include "live_effects/effect.h"
11 #include "svg/svg.h"
12 #include <2geom/svg-path-parser.h>
13 #include <2geom/sbasis-to-bezier.h>
14 #include <2geom/pathvector.h>
15 #include <2geom/d2.h>
17 #include "ui/widget/point.h"
18 #include "widgets/icon.h"
19 #include <gtk/gtkstock.h>
20 #include "selection-chemistry.h"
21 #include "xml/repr.h"
22 #include "desktop.h"
23 #include "inkscape.h"
24 #include "message-stack.h"
25 #include "verbs.h"
26 #include "document.h"
28 // needed for on-canvas editting:
29 #include "tools-switch.h"
30 #include "shape-editor.h"
31 #include "node-context.h"
32 #include "desktop-handles.h"
33 #include "selection.h"
34 #include "nodepath.h"
35 // clipboard support
36 #include "ui/clipboard.h"
37 // required for linking to other paths
38 #include "uri.h"
39 #include "sp-shape.h"
40 #include "sp-text.h"
41 #include "display/curve.h"
44 namespace Inkscape {
46 namespace LivePathEffect {
48 PathParam::PathParam( const Glib::ustring& label, const Glib::ustring& tip,
49 const Glib::ustring& key, Inkscape::UI::Widget::Registry* wr,
50 Effect* effect, const gchar * default_value)
51 : Parameter(label, tip, key, wr, effect),
52 changed(true),
53 _pathvector(),
54 _pwd2(),
55 must_recalculate_pwd2(false),
56 href(NULL),
57 ref( (SPObject*)effect->getLPEObj() )
58 {
59 defvalue = g_strdup(default_value);
60 param_readSVGValue(defvalue);
61 oncanvas_editable = true;
63 ref_changed_connection = ref.changedSignal().connect(sigc::mem_fun(*this, &PathParam::ref_changed));
64 }
66 PathParam::~PathParam()
67 {
68 remove_link();
70 g_free(defvalue);
71 }
73 std::vector<Geom::Path> const &
74 PathParam::get_pathvector()
75 {
76 return _pathvector;
77 }
79 Geom::Piecewise<Geom::D2<Geom::SBasis> > const &
80 PathParam::get_pwd2()
81 {
82 ensure_pwd2();
83 return _pwd2;
84 }
86 void
87 PathParam::param_set_default()
88 {
89 param_readSVGValue(defvalue);
90 }
92 void
93 PathParam::param_set_and_write_default()
94 {
95 param_write_to_repr(defvalue);
96 }
98 bool
99 PathParam::param_readSVGValue(const gchar * strvalue)
100 {
101 if (strvalue) {
102 _pathvector.clear();
103 remove_link();
104 must_recalculate_pwd2 = true;
106 if (strvalue[0] == '#') {
107 if (href)
108 g_free(href);
109 href = g_strdup(strvalue);
111 // Now do the attaching, which emits the changed signal.
112 try {
113 ref.attach(Inkscape::URI(href));
114 } catch (Inkscape::BadURIException &e) {
115 g_warning("%s", e.what());
116 ref.detach();
117 _pathvector = sp_svg_read_pathv(defvalue);
118 }
119 } else {
120 _pathvector = sp_svg_read_pathv(strvalue);
121 }
123 emit_changed();
124 return true;
125 }
127 return false;
128 }
130 gchar *
131 PathParam::param_getSVGValue() const
132 {
133 if (href) {
134 return href;
135 } else {
136 gchar * svgd = sp_svg_write_path( _pathvector );
137 return svgd;
138 }
139 }
141 Gtk::Widget *
142 PathParam::param_newWidget(Gtk::Tooltips * tooltips)
143 {
144 Gtk::HBox * _widget = Gtk::manage(new Gtk::HBox());
146 Gtk::Label* pLabel = Gtk::manage(new Gtk::Label(param_label));
147 static_cast<Gtk::HBox*>(_widget)->pack_start(*pLabel, true, true);
148 tooltips->set_tip(*pLabel, param_tooltip);
150 Gtk::Widget* pIcon = Gtk::manage( sp_icon_get_icon( "tool-node-editor", Inkscape::ICON_SIZE_BUTTON) );
151 Gtk::Button * pButton = Gtk::manage(new Gtk::Button());
152 pButton->set_relief(Gtk::RELIEF_NONE);
153 pIcon->show();
154 pButton->add(*pIcon);
155 pButton->show();
156 pButton->signal_clicked().connect(sigc::mem_fun(*this, &PathParam::on_edit_button_click));
157 static_cast<Gtk::HBox*>(_widget)->pack_start(*pButton, true, true);
158 tooltips->set_tip(*pButton, _("Edit on-canvas"));
160 pIcon = Gtk::manage( sp_icon_get_icon( GTK_STOCK_COPY, Inkscape::ICON_SIZE_BUTTON) );
161 pButton = Gtk::manage(new Gtk::Button());
162 pButton->set_relief(Gtk::RELIEF_NONE);
163 pIcon->show();
164 pButton->add(*pIcon);
165 pButton->show();
166 pButton->signal_clicked().connect(sigc::mem_fun(*this, &PathParam::on_copy_button_click));
167 static_cast<Gtk::HBox*>(_widget)->pack_start(*pButton, true, true);
168 tooltips->set_tip(*pButton, _("Copy path"));
170 pIcon = Gtk::manage( sp_icon_get_icon( GTK_STOCK_PASTE, Inkscape::ICON_SIZE_BUTTON) );
171 pButton = Gtk::manage(new Gtk::Button());
172 pButton->set_relief(Gtk::RELIEF_NONE);
173 pIcon->show();
174 pButton->add(*pIcon);
175 pButton->show();
176 pButton->signal_clicked().connect(sigc::mem_fun(*this, &PathParam::on_paste_button_click));
177 static_cast<Gtk::HBox*>(_widget)->pack_start(*pButton, true, true);
178 tooltips->set_tip(*pButton, _("Paste path"));
180 pIcon = Gtk::manage( sp_icon_get_icon( "edit-clone", Inkscape::ICON_SIZE_BUTTON) );
181 pButton = Gtk::manage(new Gtk::Button());
182 pButton->set_relief(Gtk::RELIEF_NONE);
183 pIcon->show();
184 pButton->add(*pIcon);
185 pButton->show();
186 pButton->signal_clicked().connect(sigc::mem_fun(*this, &PathParam::on_link_button_click));
187 static_cast<Gtk::HBox*>(_widget)->pack_start(*pButton, true, true);
188 tooltips->set_tip(*pButton, _("Link to path"));
190 static_cast<Gtk::HBox*>(_widget)->show_all_children();
192 return dynamic_cast<Gtk::Widget *> (_widget);
193 }
195 void
196 PathParam::param_editOncanvas(SPItem * item, SPDesktop * dt)
197 {
198 // TODO this whole method is broken!
199 }
201 void
202 PathParam::param_setup_nodepath(Inkscape::NodePath::Path *np)
203 {
204 // TODO this too!
205 np->show_helperpath = true;
206 np->helperpath_rgba = 0x009000ff;
207 np->helperpath_width = 1.0;
208 }
210 void
211 PathParam::addCanvasIndicators(SPLPEItem */*lpeitem*/, std::vector<Geom::PathVector> &hp_vec)
212 {
213 hp_vec.push_back(_pathvector);
214 }
216 /*
217 * Only applies transform when not referring to other path!
218 */
219 void
220 PathParam::param_transform_multiply(Geom::Matrix const& postmul, bool /*set*/)
221 {
222 // only apply transform when not referring to other path
223 if (!href) {
224 set_new_value( _pathvector * postmul, true );
225 }
226 }
228 /*
229 * See comments for set_new_value(std::vector<Geom::Path>).
230 */
231 void
232 PathParam::set_new_value (Geom::Piecewise<Geom::D2<Geom::SBasis> > const & newpath, bool write_to_svg)
233 {
234 remove_link();
235 _pathvector = Geom::path_from_piecewise(newpath, LPE_CONVERSION_TOLERANCE);
237 if (write_to_svg) {
238 gchar * svgd = sp_svg_write_path( _pathvector );
239 param_write_to_repr(svgd);
240 g_free(svgd);
242 // After the whole "writing to svg avalanche of function calling": force value upon pwd2 and don't recalculate.
243 _pwd2 = newpath;
244 must_recalculate_pwd2 = false;
245 } else {
246 _pwd2 = newpath;
247 must_recalculate_pwd2 = false;
248 emit_changed();
249 }
250 }
252 /*
253 * This method sets new path data.
254 * If this PathParam refers to another path, this link is removed (and replaced with explicit path data).
255 *
256 * If write_to_svg = true :
257 * The new path data is written to SVG. In this case the signal_path_changed signal
258 * is not directly emited in this method, because writing to SVG
259 * triggers the LPEObject to which this belongs to call Effect::setParameter which calls
260 * PathParam::readSVGValue, which finally emits the signal_path_changed signal.
261 * If write_to_svg = false :
262 * The new path data is not written to SVG. This method will emit the signal_path_changed signal.
263 */
264 void
265 PathParam::set_new_value (std::vector<Geom::Path> const &newpath, bool write_to_svg)
266 {
267 remove_link();
268 _pathvector = newpath;
269 must_recalculate_pwd2 = true;
271 if (write_to_svg) {
272 gchar * svgd = sp_svg_write_path( _pathvector );
273 param_write_to_repr(svgd);
274 g_free(svgd);
275 } else {
276 emit_changed();
277 }
278 }
280 void
281 PathParam::ensure_pwd2()
282 {
283 if (must_recalculate_pwd2) {
284 _pwd2.clear();
285 for (unsigned int i=0; i < _pathvector.size(); i++) {
286 _pwd2.concat( _pathvector[i].toPwSb() );
287 }
289 must_recalculate_pwd2 = false;
290 }
291 }
293 void
294 PathParam::emit_changed()
295 {
296 changed = true;
297 signal_path_changed.emit();
298 }
300 void
301 PathParam::start_listening(SPObject * to)
302 {
303 if ( to == NULL ) {
304 return;
305 }
306 linked_delete_connection = to->connectDelete(sigc::mem_fun(*this, &PathParam::linked_delete));
307 linked_modified_connection = to->connectModified(sigc::mem_fun(*this, &PathParam::linked_modified));
308 linked_modified(to, SP_OBJECT_MODIFIED_FLAG); // simulate linked_modified signal, so that path data is updated
309 }
311 void
312 PathParam::quit_listening(void)
313 {
314 linked_modified_connection.disconnect();
315 linked_delete_connection.disconnect();
316 }
318 void
319 PathParam::ref_changed(SPObject */*old_ref*/, SPObject *new_ref)
320 {
321 quit_listening();
322 if ( new_ref ) {
323 start_listening(new_ref);
324 }
325 }
327 void
328 PathParam::remove_link()
329 {
330 if (href) {
331 ref.detach();
332 g_free(href);
333 href = NULL;
334 }
335 }
337 void
338 PathParam::linked_delete(SPObject */*deleted*/)
339 {
340 quit_listening();
341 remove_link();
342 set_new_value (_pathvector, true);
343 }
345 void
346 PathParam::linked_modified(SPObject *linked_obj, guint /*flags*/)
347 {
348 SPCurve *curve = NULL;
349 if (SP_IS_SHAPE(linked_obj)) {
350 curve = sp_shape_get_curve(SP_SHAPE(linked_obj));
351 }
352 if (SP_IS_TEXT(linked_obj)) {
353 curve = SP_TEXT(linked_obj)->getNormalizedBpath();
354 }
356 if (curve == NULL) {
357 // curve invalid, set default value
358 _pathvector = sp_svg_read_pathv(defvalue);
359 } else {
360 _pathvector = curve->get_pathvector();
361 curve->unref();
362 }
364 must_recalculate_pwd2 = true;
365 emit_changed();
366 SP_OBJECT(param_effect->getLPEObj())->requestModified(SP_OBJECT_MODIFIED_FLAG);
367 }
369 /* CALLBACK FUNCTIONS FOR THE BUTTONS */
370 void
371 PathParam::on_edit_button_click()
372 {
373 SPItem * item = sp_desktop_selection(SP_ACTIVE_DESKTOP)->singleItem();
374 if (item != NULL) {
375 param_editOncanvas(item, SP_ACTIVE_DESKTOP);
376 }
377 }
379 void
380 PathParam::paste_param_path(const char *svgd)
381 {
382 // only recognize a non-null, non-empty string
383 if (svgd && *svgd) {
384 // remove possible link to path
385 remove_link();
387 param_write_to_repr(svgd);
388 signal_path_pasted.emit();
389 }
390 }
392 void
393 PathParam::on_paste_button_click()
394 {
395 Inkscape::UI::ClipboardManager *cm = Inkscape::UI::ClipboardManager::get();
396 Glib::ustring svgd = cm->getPathParameter();
397 paste_param_path(svgd.data());
398 sp_document_done(param_effect->getSPDoc(), SP_VERB_DIALOG_LIVE_PATH_EFFECT,
399 _("Paste path parameter"));
400 }
402 void
403 PathParam::on_copy_button_click()
404 {
405 Inkscape::UI::ClipboardManager *cm = Inkscape::UI::ClipboardManager::get();
406 cm->copyPathParameter(this);
407 }
409 void
410 PathParam::on_link_button_click()
411 {
412 Inkscape::UI::ClipboardManager *cm = Inkscape::UI::ClipboardManager::get();
413 Glib::ustring pathid = cm->getShapeOrTextObjectId();
415 if (pathid == "") {
416 return;
417 }
419 // add '#' at start to make it an uri.
420 pathid.insert(pathid.begin(), '#');
421 if ( href && strcmp(pathid.c_str(), href) == 0 ) {
422 // no change, do nothing
423 return;
424 } else {
425 // TODO:
426 // check if id really exists in document, or only in clipboard document: if only in clipboard then invalid
427 // check if linking to object to which LPE is applied (maybe delegated to PathReference
429 param_write_to_repr(pathid.c_str());
430 sp_document_done(param_effect->getSPDoc(), SP_VERB_DIALOG_LIVE_PATH_EFFECT,
431 _("Link path parameter to path"));
432 }
433 }
435 } /* namespace LivePathEffect */
437 } /* namespace Inkscape */
439 /*
440 Local Variables:
441 mode:c++
442 c-file-style:"stroustrup"
443 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
444 indent-tabs-mode:nil
445 fill-column:99
446 End:
447 */
448 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :