1 #define __SP_NAMEDVIEW_C__
3 /*
4 * <sodipodi:namedview> implementation
5 *
6 * Authors:
7 * Lauris Kaplinski <lauris@kaplinski.com>
8 * bulia byak <buliabyak@users.sf.net>
9 *
10 * Copyright (C) 2006 Johan Engelen <johan@shouraizou.nl>
11 * Copyright (C) 1999-2005 Authors
12 * Copyright (C) 2000-2001 Ximian, Inc.
13 *
14 * Released under GNU GPL, read the file 'COPYING' for more information
15 */
17 #include "config.h"
19 #include "display/canvas-grid.h"
20 #include "helper/units.h"
21 #include "svg/svg-color.h"
22 #include "xml/repr.h"
23 #include "attributes.h"
24 #include "document.h"
25 #include "desktop-events.h"
26 #include "desktop-handles.h"
27 #include "event-log.h"
28 #include "sp-guide.h"
29 #include "sp-item-group.h"
30 #include "sp-namedview.h"
31 #include "prefs-utils.h"
32 #include "desktop.h"
33 #include "conn-avoid-ref.h" // for defaultConnSpacing.
35 #include "isnan.h" //temp fix for isnan(). include last
37 #define DEFAULTTOLERANCE 0.4
38 #define DEFAULTGRIDCOLOR 0x3f3fff25
39 #define DEFAULTGRIDEMPCOLOR 0x3f3fff60
40 #define DEFAULTGRIDEMPSPACING 5
41 #define DEFAULTGUIDECOLOR 0x0000ff7f
42 #define DEFAULTGUIDEHICOLOR 0xff00007f
43 #define DEFAULTBORDERCOLOR 0x000000ff
44 #define DEFAULTPAGECOLOR 0xffffff00
46 static void sp_namedview_class_init(SPNamedViewClass *klass);
47 static void sp_namedview_init(SPNamedView *namedview);
49 static void sp_namedview_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
50 static void sp_namedview_release(SPObject *object);
51 static void sp_namedview_set(SPObject *object, unsigned int key, const gchar *value);
52 static void sp_namedview_child_added(SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *ref);
53 static void sp_namedview_remove_child(SPObject *object, Inkscape::XML::Node *child);
54 static Inkscape::XML::Node *sp_namedview_write(SPObject *object, Inkscape::XML::Node *repr, guint flags);
56 static void sp_namedview_setup_guides(SPNamedView * nv);
58 static void sp_namedview_setup_grid(SPNamedView * nv);
59 static void sp_namedview_setup_grid_item(SPNamedView * nv, SPCanvasItem * item);
61 static gboolean sp_str_to_bool(const gchar *str);
62 static gboolean sp_nv_read_length(const gchar *str, guint base, gdouble *val, const SPUnit **unit);
63 static gboolean sp_nv_read_opacity(const gchar *str, guint32 *color);
65 static SPObjectGroupClass * parent_class;
67 GType
68 sp_namedview_get_type()
69 {
70 static GType namedview_type = 0;
71 if (!namedview_type) {
72 GTypeInfo namedview_info = {
73 sizeof(SPNamedViewClass),
74 NULL, /* base_init */
75 NULL, /* base_finalize */
76 (GClassInitFunc) sp_namedview_class_init,
77 NULL, /* class_finalize */
78 NULL, /* class_data */
79 sizeof(SPNamedView),
80 16, /* n_preallocs */
81 (GInstanceInitFunc) sp_namedview_init,
82 NULL, /* value_table */
83 };
84 namedview_type = g_type_register_static(SP_TYPE_OBJECTGROUP, "SPNamedView", &namedview_info, (GTypeFlags)0);
85 }
86 return namedview_type;
87 }
89 static void sp_namedview_class_init(SPNamedViewClass * klass)
90 {
91 GObjectClass * gobject_class;
92 SPObjectClass * sp_object_class;
94 gobject_class = (GObjectClass *) klass;
95 sp_object_class = (SPObjectClass *) klass;
97 parent_class = (SPObjectGroupClass*) g_type_class_ref(SP_TYPE_OBJECTGROUP);
99 sp_object_class->build = sp_namedview_build;
100 sp_object_class->release = sp_namedview_release;
101 sp_object_class->set = sp_namedview_set;
102 sp_object_class->child_added = sp_namedview_child_added;
103 sp_object_class->remove_child = sp_namedview_remove_child;
104 sp_object_class->write = sp_namedview_write;
105 }
107 static void sp_namedview_init(SPNamedView *nv)
108 {
109 nv->editable = TRUE;
110 nv->showgrid = FALSE;
111 nv->showguides = TRUE;
112 nv->showborder = TRUE;
113 nv->showpageshadow = TRUE;
115 nv->guides = NULL;
116 nv->viewcount = 0;
117 nv->grids = NULL;
119 nv->default_layer_id = 0;
121 nv->connector_spacing = defaultConnSpacing;
123 new (&nv->snap_manager) SnapManager(nv);
124 }
126 static void sp_namedview_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)
127 {
128 SPNamedView *nv = (SPNamedView *) object;
129 SPObjectGroup *og = (SPObjectGroup *) object;
131 if (((SPObjectClass *) (parent_class))->build) {
132 (* ((SPObjectClass *) (parent_class))->build)(object, document, repr);
133 }
135 sp_object_read_attr(object, "inkscape:document-units");
136 sp_object_read_attr(object, "viewonly");
137 sp_object_read_attr(object, "showgrid");
138 sp_object_read_attr(object, "showguides");
139 sp_object_read_attr(object, "gridtolerance");
140 sp_object_read_attr(object, "guidetolerance");
141 sp_object_read_attr(object, "objecttolerance");
142 sp_object_read_attr(object, "gridoriginx");
143 sp_object_read_attr(object, "gridoriginy");
144 sp_object_read_attr(object, "gridspacingx");
145 sp_object_read_attr(object, "gridspacingy");
146 sp_object_read_attr(object, "gridempspacing");
147 sp_object_read_attr(object, "gridcolor");
148 sp_object_read_attr(object, "gridempcolor");
149 sp_object_read_attr(object, "gridopacity");
150 sp_object_read_attr(object, "gridempopacity");
151 sp_object_read_attr(object, "guidecolor");
152 sp_object_read_attr(object, "guideopacity");
153 sp_object_read_attr(object, "guidehicolor");
154 sp_object_read_attr(object, "guidehiopacity");
155 sp_object_read_attr(object, "showborder");
156 sp_object_read_attr(object, "inkscape:showpageshadow");
157 sp_object_read_attr(object, "borderlayer");
158 sp_object_read_attr(object, "bordercolor");
159 sp_object_read_attr(object, "borderopacity");
160 sp_object_read_attr(object, "pagecolor");
161 sp_object_read_attr(object, "inkscape:pageopacity");
162 sp_object_read_attr(object, "inkscape:pageshadow");
163 sp_object_read_attr(object, "inkscape:zoom");
164 sp_object_read_attr(object, "inkscape:cx");
165 sp_object_read_attr(object, "inkscape:cy");
166 sp_object_read_attr(object, "inkscape:window-width");
167 sp_object_read_attr(object, "inkscape:window-height");
168 sp_object_read_attr(object, "inkscape:window-x");
169 sp_object_read_attr(object, "inkscape:window-y");
170 sp_object_read_attr(object, "inkscape:grid-bbox");
171 sp_object_read_attr(object, "inkscape:guide-bbox");
172 sp_object_read_attr(object, "inkscape:object-bbox");
173 sp_object_read_attr(object, "inkscape:grid-points");
174 sp_object_read_attr(object, "inkscape:guide-points");
175 sp_object_read_attr(object, "inkscape:object-points");
176 sp_object_read_attr(object, "inkscape:object-paths");
177 sp_object_read_attr(object, "inkscape:object-nodes");
178 sp_object_read_attr(object, "inkscape:current-layer");
179 sp_object_read_attr(object, "inkscape:connector-spacing");
181 /* Construct guideline list */
183 for (SPObject *o = sp_object_first_child(SP_OBJECT(og)) ; o != NULL; o = SP_OBJECT_NEXT(o) ) {
184 if (SP_IS_GUIDE(o)) {
185 SPGuide * g = SP_GUIDE(o);
186 nv->guides = g_slist_prepend(nv->guides, g);
187 g_object_set(G_OBJECT(g), "color", nv->guidecolor, "hicolor", nv->guidehicolor, NULL);
188 }
189 }
190 }
192 static void sp_namedview_release(SPObject *object)
193 {
194 SPNamedView *namedview = (SPNamedView *) object;
196 if (namedview->guides) {
197 g_slist_free(namedview->guides);
198 namedview->guides = NULL;
199 }
201 while (namedview->gridviews) {
202 gtk_object_unref(GTK_OBJECT(namedview->gridviews->data));
203 namedview->gridviews = g_slist_remove(namedview->gridviews, namedview->gridviews->data);
204 }
206 // delete grids:
207 while ( namedview->grids ) {
208 Inkscape::CanvasGrid *gr = (Inkscape::CanvasGrid *)namedview->grids->data;
209 delete gr;
210 namedview->grids = g_slist_remove_link(namedview->grids, namedview->grids);
211 }
213 if (((SPObjectClass *) parent_class)->release) {
214 ((SPObjectClass *) parent_class)->release(object);
215 }
217 namedview->snap_manager.~SnapManager();
218 }
220 static void sp_namedview_set(SPObject *object, unsigned int key, const gchar *value)
221 {
222 SPNamedView *nv = SP_NAMEDVIEW(object);
223 SPUnit const &px = sp_unit_get_by_id(SP_UNIT_PX);
225 switch (key) {
226 case SP_ATTR_VIEWONLY:
227 nv->editable = (!value);
228 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
229 break;
230 case SP_ATTR_SHOWGRID:
231 nv->showgrid = sp_str_to_bool(value);
232 sp_namedview_setup_grid(nv);
233 /* Disable grid snaps if the grid is turned off */
234 nv->snap_manager.grid.setEnabled(nv->showgrid);
235 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
236 break;
237 case SP_ATTR_SHOWGUIDES:
238 if (!value) { // show guides if not specified, for backwards compatibility
239 nv->showguides = TRUE;
240 } else {
241 nv->showguides = sp_str_to_bool(value);
242 }
243 sp_namedview_setup_guides(nv);
244 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
245 break;
246 case SP_ATTR_GRIDTOLERANCE:
247 nv->gridtoleranceunit = &px;
248 nv->gridtolerance = DEFAULTTOLERANCE;
249 if (value) {
250 sp_nv_read_length(value, SP_UNIT_ABSOLUTE | SP_UNIT_DEVICE, &nv->gridtolerance, &nv->gridtoleranceunit);
251 }
252 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
253 break;
254 case SP_ATTR_GUIDETOLERANCE:
255 nv->guidetoleranceunit = &px;
256 nv->guidetolerance = DEFAULTTOLERANCE;
257 if (value) {
258 sp_nv_read_length(value, SP_UNIT_ABSOLUTE | SP_UNIT_DEVICE, &nv->guidetolerance, &nv->guidetoleranceunit);
259 }
260 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
261 break;
262 case SP_ATTR_OBJECTTOLERANCE:
263 nv->objecttoleranceunit = &px;
264 nv->objecttolerance = DEFAULTTOLERANCE;
265 if (value) {
266 sp_nv_read_length(value, SP_UNIT_ABSOLUTE | SP_UNIT_DEVICE, &nv->objecttolerance, &nv->objecttoleranceunit);
267 }
268 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
269 break;
270 case SP_ATTR_GRIDORIGINX:
271 case SP_ATTR_GRIDORIGINY:
272 {
273 unsigned const d = (key == SP_ATTR_GRIDORIGINY);
274 nv->gridunit = nv->doc_units;
275 nv->gridorigin[d] = 0.0;
276 if (value) {
277 sp_nv_read_length(value, SP_UNIT_ABSOLUTE | SP_UNIT_DEVICE, &nv->gridorigin[d], &nv->gridunit);
278 }
279 nv->gridorigin[d] = sp_units_get_pixels(nv->gridorigin[d], *(nv->gridunit));
280 sp_namedview_setup_grid(nv);
281 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
282 break;
283 }
284 case SP_ATTR_GRIDSPACINGX:
285 case SP_ATTR_GRIDSPACINGY:
286 {
287 unsigned const d = (key == SP_ATTR_GRIDSPACINGY);
288 nv->gridunit = nv->doc_units;
289 nv->gridspacing[d] = 1.0;
290 if (value) {
291 sp_nv_read_length(value, SP_UNIT_ABSOLUTE | SP_UNIT_DEVICE, &nv->gridspacing[d], &nv->gridunit);
292 }
293 nv->gridspacing[d] = sp_units_get_pixels(nv->gridspacing[d], *(nv->gridunit));
294 sp_namedview_setup_grid(nv);
295 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
296 break;
297 }
298 case SP_ATTR_GRIDCOLOR:
299 nv->gridcolor = (nv->gridcolor & 0xff) | (DEFAULTGRIDCOLOR & 0xffffff00);
300 if (value) {
301 nv->gridcolor = (nv->gridcolor & 0xff) | sp_svg_read_color(value, nv->gridcolor);
302 }
303 sp_namedview_setup_grid(nv);
304 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
305 break;
306 case SP_ATTR_GRIDEMPCOLOR:
307 nv->gridempcolor = (nv->gridempcolor & 0xff) | (DEFAULTGRIDEMPCOLOR & 0xffffff00);
308 if (value) {
309 nv->gridempcolor = (nv->gridempcolor & 0xff) | sp_svg_read_color(value, nv->gridempcolor);
310 }
311 sp_namedview_setup_grid(nv);
312 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
313 break;
314 case SP_ATTR_GRIDOPACITY:
315 nv->gridcolor = (nv->gridcolor & 0xffffff00) | (DEFAULTGRIDCOLOR & 0xff);
316 sp_nv_read_opacity(value, &nv->gridcolor);
317 sp_namedview_setup_grid(nv);
318 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
319 break;
320 case SP_ATTR_GRIDEMPOPACITY:
321 nv->gridempcolor = (nv->gridempcolor & 0xffffff00) | (DEFAULTGRIDEMPCOLOR & 0xff);
322 sp_nv_read_opacity(value, &nv->gridempcolor);
323 sp_namedview_setup_grid(nv);
324 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
325 break;
326 case SP_ATTR_GRIDEMPSPACING:
327 nv->gridempspacing = DEFAULTGRIDEMPSPACING;
328 if (value != NULL)
329 nv->gridempspacing = atoi(value);
330 sp_namedview_setup_grid(nv);
331 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
332 break;
333 case SP_ATTR_GUIDECOLOR:
334 nv->guidecolor = (nv->guidecolor & 0xff) | (DEFAULTGUIDECOLOR & 0xffffff00);
335 if (value) {
336 nv->guidecolor = (nv->guidecolor & 0xff) | sp_svg_read_color(value, nv->guidecolor);
337 }
338 for (GSList *l = nv->guides; l != NULL; l = l->next) {
339 g_object_set(G_OBJECT(l->data), "color", nv->guidecolor, NULL);
340 }
341 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
342 break;
343 case SP_ATTR_GUIDEOPACITY:
344 nv->guidecolor = (nv->guidecolor & 0xffffff00) | (DEFAULTGUIDECOLOR & 0xff);
345 sp_nv_read_opacity(value, &nv->guidecolor);
346 for (GSList *l = nv->guides; l != NULL; l = l->next) {
347 g_object_set(G_OBJECT(l->data), "color", nv->guidecolor, NULL);
348 }
349 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
350 break;
351 case SP_ATTR_GUIDEHICOLOR:
352 nv->guidehicolor = (nv->guidehicolor & 0xff) | (DEFAULTGUIDEHICOLOR & 0xffffff00);
353 if (value) {
354 nv->guidehicolor = (nv->guidehicolor & 0xff) | sp_svg_read_color(value, nv->guidehicolor);
355 }
356 for (GSList *l = nv->guides; l != NULL; l = l->next) {
357 g_object_set(G_OBJECT(l->data), "hicolor", nv->guidehicolor, NULL);
358 }
359 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
360 break;
361 case SP_ATTR_GUIDEHIOPACITY:
362 nv->guidehicolor = (nv->guidehicolor & 0xffffff00) | (DEFAULTGUIDEHICOLOR & 0xff);
363 sp_nv_read_opacity(value, &nv->guidehicolor);
364 for (GSList *l = nv->guides; l != NULL; l = l->next) {
365 g_object_set(G_OBJECT(l->data), "hicolor", nv->guidehicolor, NULL);
366 }
367 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
368 break;
369 case SP_ATTR_SHOWBORDER:
370 nv->showborder = (value) ? sp_str_to_bool (value) : TRUE;
371 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
372 break;
373 case SP_ATTR_BORDERLAYER:
374 nv->borderlayer = SP_BORDER_LAYER_BOTTOM;
375 if (value && !strcasecmp(value, "true")) nv->borderlayer = SP_BORDER_LAYER_TOP;
376 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
377 break;
378 case SP_ATTR_BORDERCOLOR:
379 nv->bordercolor = (nv->bordercolor & 0xff) | (DEFAULTBORDERCOLOR & 0xffffff00);
380 if (value) {
381 nv->bordercolor = (nv->bordercolor & 0xff) | sp_svg_read_color (value, nv->bordercolor);
382 }
383 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
384 break;
385 case SP_ATTR_BORDEROPACITY:
386 nv->bordercolor = (nv->bordercolor & 0xffffff00) | (DEFAULTBORDERCOLOR & 0xff);
387 sp_nv_read_opacity(value, &nv->bordercolor);
388 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
389 break;
390 case SP_ATTR_PAGECOLOR:
391 nv->pagecolor = (nv->pagecolor & 0xff) | (DEFAULTPAGECOLOR & 0xffffff00);
392 if (value) {
393 nv->pagecolor = (nv->pagecolor & 0xff) | sp_svg_read_color(value, nv->pagecolor);
394 }
395 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
396 break;
397 case SP_ATTR_INKSCAPE_PAGEOPACITY:
398 nv->pagecolor = (nv->pagecolor & 0xffffff00) | (DEFAULTPAGECOLOR & 0xff);
399 sp_nv_read_opacity(value, &nv->pagecolor);
400 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
401 break;
402 case SP_ATTR_INKSCAPE_PAGESHADOW:
403 nv->pageshadow = value? atoi(value) : 2; // 2 is the default
404 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
405 break;
406 case SP_ATTR_SHOWPAGESHADOW:
407 nv->showpageshadow = (value) ? sp_str_to_bool(value) : TRUE;
408 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
409 break;
410 case SP_ATTR_INKSCAPE_ZOOM:
411 nv->zoom = value ? g_ascii_strtod(value, NULL) : 0; // zero means not set
412 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
413 break;
414 case SP_ATTR_INKSCAPE_CX:
415 nv->cx = value ? g_ascii_strtod(value, NULL) : HUGE_VAL; // HUGE_VAL means not set
416 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
417 break;
418 case SP_ATTR_INKSCAPE_CY:
419 nv->cy = value ? g_ascii_strtod(value, NULL) : HUGE_VAL; // HUGE_VAL means not set
420 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
421 break;
422 case SP_ATTR_INKSCAPE_WINDOW_WIDTH:
423 nv->window_width = value? atoi(value) : -1; // -1 means not set
424 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
425 break;
426 case SP_ATTR_INKSCAPE_WINDOW_HEIGHT:
427 nv->window_height = value ? atoi(value) : -1; // -1 means not set
428 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
429 break;
430 case SP_ATTR_INKSCAPE_WINDOW_X:
431 nv->window_x = value ? atoi(value) : -1; // -1 means not set
432 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
433 break;
434 case SP_ATTR_INKSCAPE_WINDOW_Y:
435 nv->window_y = value ? atoi(value) : -1; // -1 means not set
436 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
437 break;
438 case SP_ATTR_INKSCAPE_GRID_BBOX:
439 nv->snap_manager.grid.setSnapTo(Inkscape::Snapper::BBOX_POINT, value ? sp_str_to_bool(value) : TRUE);
440 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
441 break;
442 case SP_ATTR_INKSCAPE_GRID_POINTS:
443 nv->snap_manager.grid.setSnapTo(Inkscape::Snapper::SNAP_POINT, value ? sp_str_to_bool(value) : FALSE);
444 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
445 break;
446 case SP_ATTR_INKSCAPE_GUIDE_BBOX:
447 nv->snap_manager.guide.setSnapTo(Inkscape::Snapper::BBOX_POINT, value ? sp_str_to_bool(value) : TRUE);
448 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
449 break;
450 case SP_ATTR_INKSCAPE_GUIDE_POINTS:
451 nv->snap_manager.guide.setSnapTo(Inkscape::Snapper::SNAP_POINT, value ? sp_str_to_bool(value) : FALSE);
452 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
453 break;
454 case SP_ATTR_INKSCAPE_OBJECT_BBOX:
455 nv->snap_manager.object.setSnapTo(Inkscape::Snapper::BBOX_POINT, (value) ? sp_str_to_bool(value) : FALSE);
456 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
457 break;
458 case SP_ATTR_INKSCAPE_OBJECT_POINTS:
459 nv->snap_manager.object.setSnapTo(Inkscape::Snapper::SNAP_POINT, (value) ? sp_str_to_bool(value) : FALSE);
460 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
461 break;
462 case SP_ATTR_INKSCAPE_OBJECT_PATHS:
463 nv->snap_manager.object.setSnapToPaths(value ? sp_str_to_bool(value) : TRUE);
464 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
465 break;
466 case SP_ATTR_INKSCAPE_OBJECT_NODES:
467 nv->snap_manager.object.setSnapToNodes(value ? sp_str_to_bool(value) : TRUE);
468 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
469 break;
470 case SP_ATTR_INKSCAPE_CURRENT_LAYER:
471 nv->default_layer_id = value ? g_quark_from_string(value) : 0;
472 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
473 break;
474 case SP_ATTR_INKSCAPE_CONNECTOR_SPACING:
475 nv->connector_spacing = value ? g_ascii_strtod(value, NULL) :
476 defaultConnSpacing;
477 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
478 break;
479 case SP_ATTR_INKSCAPE_DOCUMENT_UNITS: {
480 /* The default unit if the document doesn't override this: e.g. for files saved as
481 * `plain SVG', or non-inkscape files, or files created by an inkscape 0.40 &
482 * earlier.
483 *
484 * Here we choose `px': useful for screen-destined SVGs, and fewer bug reports
485 * about "not the same numbers as what's in the SVG file" (at least for documents
486 * without a viewBox attribute on the root <svg> element). Similarly, it's also
487 * the most reliable unit (i.e. least likely to be wrong in different viewing
488 * conditions) for viewBox-less SVG files given that it's the unit that inkscape
489 * uses for all coordinates.
490 *
491 * For documents that do have a viewBox attribute on the root <svg> element, it
492 * might be better if we used either viewBox coordinates or if we used the unit of
493 * say the width attribute of the root <svg> element. However, these pose problems
494 * in that they aren't in general absolute units as currently required by
495 * doc_units.
496 */
497 SPUnit const *new_unit = &sp_unit_get_by_id(SP_UNIT_PX);
499 if (value) {
500 SPUnit const *const req_unit = sp_unit_get_by_abbreviation(value);
501 if ( req_unit == NULL ) {
502 g_warning("Unrecognized unit `%s'", value);
503 /* fixme: Document errors should be reported in the status bar or
504 * the like (e.g. as per
505 * http://www.w3.org/TR/SVG11/implnote.html#ErrorProcessing); g_log
506 * should be only for programmer errors. */
507 } else if ( req_unit->base == SP_UNIT_ABSOLUTE ||
508 req_unit->base == SP_UNIT_DEVICE ) {
509 new_unit = req_unit;
510 } else {
511 g_warning("Document units must be absolute like `mm', `pt' or `px', but found `%s'",
512 value);
513 /* fixme: Don't use g_log (see above). */
514 }
515 }
516 nv->doc_units = new_unit;
517 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
518 break;
519 }
520 default:
521 if (((SPObjectClass *) (parent_class))->set) {
522 ((SPObjectClass *) (parent_class))->set(object, key, value);
523 }
524 break;
525 }
526 }
528 static void sp_namedview_child_added(SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *ref)
529 {
530 SPNamedView *nv = (SPNamedView *) object;
532 if (((SPObjectClass *) (parent_class))->child_added) {
533 (* ((SPObjectClass *) (parent_class))->child_added)(object, child, ref);
534 }
536 const gchar *id = child->attribute("id");
537 if (!strcmp(child->name(), "inkscape:grid")) {
538 // check for which grid-type
539 Inkscape::CanvasGrid* addedgrid;
540 const char * gridtype = child->attribute("type");
541 if (!gridtype) {
542 gridtype = "xygrid"; // use this as default gridtype when none is specified
543 child->setAttribute("type", gridtype);
544 }
545 addedgrid = Inkscape::CanvasGrid::NewGrid( (SPDesktop*) nv->views->data, child, gridtype);
546 if (addedgrid) {
547 nv->grids = g_slist_append(nv->grids, addedgrid);
548 addedgrid->show();
549 }
550 } else {
551 SPObject *no = object->document->getObjectById(id);
552 g_assert(SP_IS_OBJECT(no));
554 if (SP_IS_GUIDE(no)) {
555 SPGuide *g = (SPGuide *) no;
556 nv->guides = g_slist_prepend(nv->guides, g);
557 g_object_set(G_OBJECT(g), "color", nv->guidecolor, "hicolor", nv->guidehicolor, NULL);
558 if (nv->editable) {
559 for (GSList *l = nv->views; l != NULL; l = l->next) {
560 sp_guide_show(g, static_cast<SPDesktop*>(l->data)->guides, (GCallback) sp_dt_guide_event);
561 if (static_cast<SPDesktop*>(l->data)->guides_active)
562 sp_guide_sensitize(g,
563 sp_desktop_canvas(static_cast<SPDesktop*> (l->data)),
564 TRUE);
565 if (nv->showguides) {
566 for (GSList *v = SP_GUIDE(g)->views; v != NULL; v = v->next) {
567 sp_canvas_item_show(SP_CANVAS_ITEM(v->data));
568 }
569 } else {
570 for (GSList *v = SP_GUIDE(g)->views; v != NULL; v = v->next) {
571 sp_canvas_item_hide(SP_CANVAS_ITEM(v->data));
572 }
573 }
574 }
575 }
576 }
577 }
578 }
580 static void sp_namedview_remove_child(SPObject *object, Inkscape::XML::Node *child)
581 {
582 g_message("named view:: child removed");
583 SPNamedView *nv = (SPNamedView *) object;
585 if (!strcmp(child->name(), "inkscape:grid")) {
586 for ( GSList *iter = nv->grids ; iter ; iter = iter->next ) {
587 Inkscape::CanvasGrid *gr = (Inkscape::CanvasGrid *)iter->data;
588 if ( gr->repr == child ) {
589 delete gr;
590 nv->grids = g_slist_remove_link(nv->grids, iter);
591 break;
592 }
593 }
594 } else {
595 GSList **ref = &nv->guides;
596 for ( GSList *iter = nv->guides ; iter ; iter = iter->next ) {
597 if ( SP_OBJECT_REPR((SPObject *)iter->data) == child ) {
598 *ref = iter->next;
599 iter->next = NULL;
600 g_slist_free_1(iter);
601 break;
602 }
603 ref = &iter->next;
604 }
605 }
607 if (((SPObjectClass *) (parent_class))->remove_child) {
608 (* ((SPObjectClass *) (parent_class))->remove_child)(object, child);
609 }
610 }
612 static Inkscape::XML::Node *sp_namedview_write(SPObject *object, Inkscape::XML::Node *repr, guint flags)
613 {
614 if ( ( flags & SP_OBJECT_WRITE_EXT ) &&
615 repr != SP_OBJECT_REPR(object) )
616 {
617 if (repr) {
618 repr->mergeFrom(SP_OBJECT_REPR(object), "id");
619 } else {
620 /// \todo FIXME: Plumb an appropriate XML::Document into this
621 repr = SP_OBJECT_REPR(object)->duplicate(NULL);
622 }
623 }
625 return repr;
626 }
628 void SPNamedView::show(SPDesktop *desktop)
629 {
630 for (GSList *l = guides; l != NULL; l = l->next) {
631 sp_guide_show(SP_GUIDE(l->data), desktop->guides, (GCallback) sp_dt_guide_event);
632 if (desktop->guides_active) {
633 sp_guide_sensitize(SP_GUIDE(l->data), sp_desktop_canvas(desktop), TRUE);
634 }
635 if (showguides) {
636 for (GSList *v = SP_GUIDE(l->data)->views; v != NULL; v = v->next) {
637 sp_canvas_item_show(SP_CANVAS_ITEM(v->data));
638 }
639 } else {
640 for (GSList *v = SP_GUIDE(l->data)->views; v != NULL; v = v->next) {
641 sp_canvas_item_hide(SP_CANVAS_ITEM(v->data));
642 }
643 }
644 }
646 views = g_slist_prepend(views, desktop);
648 SPCanvasItem * item = sp_canvas_item_new(sp_desktop_grid(desktop), INKSCAPE_TYPE_CXYGRID, NULL);
649 // since we're keeping a copy, we need to bump up the ref count
650 gtk_object_ref(GTK_OBJECT(item));
651 gridviews = g_slist_prepend(gridviews, item);
653 // generate grids specified in SVG:
654 Inkscape::XML::Node *repr = SP_OBJECT_REPR(this);
655 if (repr) {
656 for (Inkscape::XML::Node * child = repr->firstChild() ; child != NULL; child = child->next() ) {
657 if (!strcmp(child->name(), "inkscape:grid")) {
658 Inkscape::CanvasXYGrid* addedgrid = new Inkscape::CanvasXYGrid(desktop, child);
659 if (addedgrid) {
660 grids = g_slist_append(grids, addedgrid);
661 addedgrid->enable_snapping();
662 addedgrid->show();
663 }
664 }
665 }
666 }
669 sp_namedview_setup_grid(this);
670 }
672 #define MIN_ONSCREEN_DISTANCE 50
674 /*
675 * Restores window geometry from the document settings
676 */
677 void sp_namedview_window_from_document(SPDesktop *desktop)
678 {
679 SPNamedView *nv = desktop->namedview;
680 gint save_geometry = prefs_get_int_attribute("options.savewindowgeometry", "value", 0);
682 // restore window size and position
683 if (save_geometry) {
684 gint w = MIN(gdk_screen_width(), nv->window_width);
685 gint h = MIN(gdk_screen_height(), nv->window_height);
686 gint x = MIN(gdk_screen_width() - MIN_ONSCREEN_DISTANCE, nv->window_x);
687 gint y = MIN(gdk_screen_height() - MIN_ONSCREEN_DISTANCE, nv->window_y);
688 if (w>0 && h>0 && x>0 && y>0) {
689 x = MIN(gdk_screen_width() - w, x);
690 y = MIN(gdk_screen_height() - h, y);
691 }
692 if (w>0 && h>0)
693 desktop->setWindowSize(w, h);
694 if (x>0 && y>0)
695 desktop->setWindowPosition(NR::Point(x, y));
696 }
698 // restore zoom and view
699 if (nv->zoom != 0 && nv->zoom != HUGE_VAL && !isNaN(nv->zoom)
700 && nv->cx != HUGE_VAL && !isNaN(nv->cx)
701 && nv->cy != HUGE_VAL && !isNaN(nv->cy)) {
702 desktop->zoom_absolute(nv->cx, nv->cy, nv->zoom);
703 } else if (sp_desktop_document(desktop)) { // document without saved zoom, zoom to its page
704 desktop->zoom_page();
705 }
707 // cancel any history of zooms up to this point
708 if (desktop->zooms_past) {
709 g_list_free(desktop->zooms_past);
710 desktop->zooms_past = NULL;
711 }
712 }
714 void sp_namedview_update_layers_from_document (SPDesktop *desktop)
715 {
716 SPObject *layer = NULL;
717 SPDocument *document = desktop->doc();
718 SPNamedView *nv = desktop->namedview;
719 if ( nv->default_layer_id != 0 ) {
720 layer = document->getObjectById(g_quark_to_string(nv->default_layer_id));
721 }
722 // don't use that object if it's not at least group
723 if ( !layer || !SP_IS_GROUP(layer) ) {
724 layer = NULL;
725 }
726 // if that didn't work out, look for the topmost layer
727 if (!layer) {
728 SPObject *iter = sp_object_first_child(SP_DOCUMENT_ROOT(document));
729 for ( ; iter ; iter = SP_OBJECT_NEXT(iter) ) {
730 if (desktop->isLayer(iter)) {
731 layer = iter;
732 }
733 }
734 }
735 if (layer) {
736 desktop->setCurrentLayer(layer);
737 }
739 // FIXME: find a better place to do this
740 desktop->event_log->updateUndoVerbs();
741 }
743 void sp_namedview_document_from_window(SPDesktop *desktop)
744 {
745 gint save_geometry = prefs_get_int_attribute("options.savewindowgeometry", "value", 0);
746 Inkscape::XML::Node *view = SP_OBJECT_REPR(desktop->namedview);
747 NR::Rect const r = desktop->get_display_area();
749 // saving window geometry is not undoable
750 bool saved = sp_document_get_undo_sensitive(sp_desktop_document(desktop));
751 sp_document_set_undo_sensitive(sp_desktop_document(desktop), false);
753 sp_repr_set_svg_double(view, "inkscape:zoom", desktop->current_zoom());
754 sp_repr_set_svg_double(view, "inkscape:cx", r.midpoint()[NR::X]);
755 sp_repr_set_svg_double(view, "inkscape:cy", r.midpoint()[NR::Y]);
757 if (save_geometry) {
758 gint w, h, x, y;
759 desktop->getWindowGeometry(x, y, w, h);
760 sp_repr_set_int(view, "inkscape:window-width", w);
761 sp_repr_set_int(view, "inkscape:window-height", h);
762 sp_repr_set_int(view, "inkscape:window-x", x);
763 sp_repr_set_int(view, "inkscape:window-y", y);
764 }
766 view->setAttribute("inkscape:current-layer", SP_OBJECT_ID(desktop->currentLayer()));
768 // restore undoability
769 sp_document_set_undo_sensitive(sp_desktop_document(desktop), saved);
770 }
772 void SPNamedView::hide(SPDesktop const *desktop)
773 {
774 g_assert(desktop != NULL);
775 g_assert(g_slist_find(views, desktop));
777 for (GSList *l = guides; l != NULL; l = l->next) {
778 sp_guide_hide(SP_GUIDE(l->data), sp_desktop_canvas(desktop));
779 }
781 views = g_slist_remove(views, desktop);
783 GSList *l;
784 for (l = gridviews; l != NULL; l = l->next) {
785 if (! l->data) {
786 continue;
787 }
788 SPCanvasItem *item = static_cast<SPCanvasItem*>(l->data);
790 if (item->canvas == sp_desktop_canvas(desktop)) {
791 sp_canvas_item_hide(SP_CANVAS_ITEM(l->data));
792 gtk_object_unref(GTK_OBJECT(l->data));
793 gridviews = g_slist_remove(gridviews, l->data);
794 }
795 }
797 // delete grids:
798 while ( grids ) {
799 Inkscape::CanvasGrid *gr = (Inkscape::CanvasGrid *)grids->data;
800 delete gr;
801 grids = g_slist_remove_link(grids, grids);
802 }
803 }
805 void SPNamedView::activateGuides(gpointer desktop, gboolean active)
806 {
807 g_assert(desktop != NULL);
808 g_assert(g_slist_find(views, desktop));
810 SPDesktop *dt = static_cast<SPDesktop*>(desktop);
812 for (GSList *l = guides; l != NULL; l = l->next) {
813 sp_guide_sensitize(SP_GUIDE(l->data), sp_desktop_canvas(dt), active);
814 }
815 }
817 static void sp_namedview_setup_guides(SPNamedView *nv)
818 {
819 for (GSList *l = nv->guides; l != NULL; l = l->next) {
820 if (nv->showguides) {
821 for (GSList *v = SP_GUIDE(l->data)->views; v != NULL; v = v->next) {
822 sp_canvas_item_show(SP_CANVAS_ITEM(v->data));
823 }
824 } else {
825 for (GSList *v = SP_GUIDE(l->data)->views; v != NULL; v = v->next) {
826 sp_canvas_item_hide(SP_CANVAS_ITEM(v->data));
827 }
828 }
829 }
830 }
832 void sp_namedview_toggle_guides(SPDocument *doc, Inkscape::XML::Node *repr)
833 {
834 unsigned int v;
835 unsigned int set = sp_repr_get_boolean(repr, "showguides", &v);
836 if (!set) { // hide guides if not specified, for backwards compatibility
837 v = FALSE;
838 } else {
839 v = !v;
840 }
842 bool saved = sp_document_get_undo_sensitive(doc);
843 sp_document_set_undo_sensitive(doc, false);
845 sp_repr_set_boolean(repr, "showguides", v);
847 doc->rroot->setAttribute("sodipodi:modified", "true");
848 sp_document_set_undo_sensitive(doc, saved);
849 }
851 void sp_namedview_toggle_grid(SPDocument *doc, Inkscape::XML::Node *repr)
852 {
853 unsigned int v;
854 sp_repr_get_boolean(repr, "showgrid", &v);
855 v = !v;
857 bool saved = sp_document_get_undo_sensitive(doc);
858 sp_document_set_undo_sensitive(doc, false);
860 sp_repr_set_boolean(repr, "showgrid", v);
862 doc->rroot->setAttribute("sodipodi:modified", "true");
863 sp_document_set_undo_sensitive(doc, saved);
864 }
866 static void sp_namedview_setup_grid(SPNamedView *nv)
867 {
868 for (GSList *l = nv->gridviews; l != NULL; l = l->next) {
869 sp_namedview_setup_grid_item(nv, SP_CANVAS_ITEM(l->data));
870 }
871 }
873 static void sp_namedview_setup_grid_item(SPNamedView *nv, SPCanvasItem *item)
874 {
875 if ( nv->showgrid ) {
876 sp_canvas_item_show(item);
877 } else {
878 sp_canvas_item_hide(item);
879 }
881 sp_canvas_item_set((GtkObject *) item,
882 "color", nv->gridcolor,
883 "originx", nv->gridorigin[NR::X],
884 "originy", nv->gridorigin[NR::Y],
885 "spacingx", nv->gridspacing[NR::X],
886 "spacingy", nv->gridspacing[NR::Y],
887 "empcolor", nv->gridempcolor,
888 "empspacing", nv->gridempspacing,
889 NULL);
890 }
893 gchar const *SPNamedView::getName() const
894 {
895 SPException ex;
896 SP_EXCEPTION_INIT(&ex);
897 return sp_object_getAttribute(SP_OBJECT(this), "id", &ex);
898 }
900 guint SPNamedView::getViewCount()
901 {
902 return ++viewcount;
903 }
905 GSList const *SPNamedView::getViewList() const
906 {
907 return views;
908 }
910 /* This should be moved somewhere */
912 static gboolean sp_str_to_bool(const gchar *str)
913 {
914 if (str) {
915 if (!g_strcasecmp(str, "true") ||
916 !g_strcasecmp(str, "yes") ||
917 !g_strcasecmp(str, "y") ||
918 (atoi(str) != 0)) {
919 return TRUE;
920 }
921 }
923 return FALSE;
924 }
926 /* fixme: Collect all these length parsing methods and think common sane API */
928 static gboolean sp_nv_read_length(const gchar *str, guint base, gdouble *val, const SPUnit **unit)
929 {
930 if (!str) {
931 return FALSE;
932 }
934 gchar *u;
935 gdouble v = g_ascii_strtod(str, &u);
936 if (!u) {
937 return FALSE;
938 }
939 while (isspace(*u)) {
940 u += 1;
941 }
943 if (!*u) {
944 /* No unit specified - keep default */
945 *val = v;
946 return TRUE;
947 }
949 if (base & SP_UNIT_DEVICE) {
950 if (u[0] && u[1] && !isalnum(u[2]) && !strncmp(u, "px", 2)) {
951 *unit = &sp_unit_get_by_id(SP_UNIT_PX);
952 *val = v;
953 return TRUE;
954 }
955 }
957 if (base & SP_UNIT_ABSOLUTE) {
958 if (!strncmp(u, "pt", 2)) {
959 *unit = &sp_unit_get_by_id(SP_UNIT_PT);
960 } else if (!strncmp(u, "mm", 2)) {
961 *unit = &sp_unit_get_by_id(SP_UNIT_MM);
962 } else if (!strncmp(u, "cm", 2)) {
963 *unit = &sp_unit_get_by_id(SP_UNIT_CM);
964 } else if (!strncmp(u, "m", 1)) {
965 *unit = &sp_unit_get_by_id(SP_UNIT_M);
966 } else if (!strncmp(u, "in", 2)) {
967 *unit = &sp_unit_get_by_id(SP_UNIT_IN);
968 } else {
969 return FALSE;
970 }
971 *val = v;
972 return TRUE;
973 }
975 return FALSE;
976 }
978 static gboolean sp_nv_read_opacity(const gchar *str, guint32 *color)
979 {
980 if (!str) {
981 return FALSE;
982 }
984 gchar *u;
985 gdouble v = g_ascii_strtod(str, &u);
986 if (!u) {
987 return FALSE;
988 }
989 v = CLAMP(v, 0.0, 1.0);
991 *color = (*color & 0xffffff00) | (guint32) floor(v * 255.9999);
993 return TRUE;
994 }
996 SPNamedView *sp_document_namedview(SPDocument *document, const gchar *id)
997 {
998 g_return_val_if_fail(document != NULL, NULL);
1000 SPObject *nv = sp_item_group_get_child_by_name((SPGroup *) document->root, NULL, "sodipodi:namedview");
1001 g_assert(nv != NULL);
1003 if (id == NULL) {
1004 return (SPNamedView *) nv;
1005 }
1007 while (nv && strcmp(nv->id, id)) {
1008 nv = sp_item_group_get_child_by_name((SPGroup *) document->root, nv, "sodipodi:namedview");
1009 }
1011 return (SPNamedView *) nv;
1012 }
1014 /**
1015 * Returns namedview's default metric.
1016 */
1017 SPMetric SPNamedView::getDefaultMetric() const
1018 {
1019 if (doc_units) {
1020 return sp_unit_get_metric(doc_units);
1021 } else {
1022 return SP_PT;
1023 }
1024 }
1026 /*
1027 Local Variables:
1028 mode:c++
1029 c-file-style:"stroustrup"
1030 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
1031 indent-tabs-mode:nil
1032 fill-column:99
1033 End:
1034 */
1035 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtab