fdbedab4e5b3a9ab766e81be660410151a26618c
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 gboolean sp_str_to_bool(const gchar *str);
59 static gboolean sp_nv_read_length(const gchar *str, guint base, gdouble *val, const SPUnit **unit);
60 static gboolean sp_nv_read_opacity(const gchar *str, guint32 *color);
62 static SPObjectGroupClass * parent_class;
64 GType
65 sp_namedview_get_type()
66 {
67 static GType namedview_type = 0;
68 if (!namedview_type) {
69 GTypeInfo namedview_info = {
70 sizeof(SPNamedViewClass),
71 NULL, /* base_init */
72 NULL, /* base_finalize */
73 (GClassInitFunc) sp_namedview_class_init,
74 NULL, /* class_finalize */
75 NULL, /* class_data */
76 sizeof(SPNamedView),
77 16, /* n_preallocs */
78 (GInstanceInitFunc) sp_namedview_init,
79 NULL, /* value_table */
80 };
81 namedview_type = g_type_register_static(SP_TYPE_OBJECTGROUP, "SPNamedView", &namedview_info, (GTypeFlags)0);
82 }
83 return namedview_type;
84 }
86 static void sp_namedview_class_init(SPNamedViewClass * klass)
87 {
88 GObjectClass * gobject_class;
89 SPObjectClass * sp_object_class;
91 gobject_class = (GObjectClass *) klass;
92 sp_object_class = (SPObjectClass *) klass;
94 parent_class = (SPObjectGroupClass*) g_type_class_ref(SP_TYPE_OBJECTGROUP);
96 sp_object_class->build = sp_namedview_build;
97 sp_object_class->release = sp_namedview_release;
98 sp_object_class->set = sp_namedview_set;
99 sp_object_class->child_added = sp_namedview_child_added;
100 sp_object_class->remove_child = sp_namedview_remove_child;
101 sp_object_class->write = sp_namedview_write;
102 }
104 static void sp_namedview_init(SPNamedView *nv)
105 {
106 nv->editable = TRUE;
107 nv->showguides = TRUE;
108 nv->showborder = TRUE;
109 nv->showpageshadow = TRUE;
111 nv->guides = NULL;
112 nv->viewcount = 0;
113 nv->grids = NULL;
115 nv->default_layer_id = 0;
117 nv->connector_spacing = defaultConnSpacing;
119 new (&nv->snap_manager) SnapManager(nv);
120 }
122 static void sp_namedview_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)
123 {
124 SPNamedView *nv = (SPNamedView *) object;
125 SPObjectGroup *og = (SPObjectGroup *) object;
127 if (((SPObjectClass *) (parent_class))->build) {
128 (* ((SPObjectClass *) (parent_class))->build)(object, document, repr);
129 }
131 sp_object_read_attr(object, "inkscape:document-units");
132 sp_object_read_attr(object, "viewonly");
133 sp_object_read_attr(object, "showguides");
134 sp_object_read_attr(object, "showgrid");
135 sp_object_read_attr(object, "gridtolerance");
136 sp_object_read_attr(object, "guidetolerance");
137 sp_object_read_attr(object, "objecttolerance");
138 sp_object_read_attr(object, "guidecolor");
139 sp_object_read_attr(object, "guideopacity");
140 sp_object_read_attr(object, "guidehicolor");
141 sp_object_read_attr(object, "guidehiopacity");
142 sp_object_read_attr(object, "showborder");
143 sp_object_read_attr(object, "inkscape:showpageshadow");
144 sp_object_read_attr(object, "borderlayer");
145 sp_object_read_attr(object, "bordercolor");
146 sp_object_read_attr(object, "borderopacity");
147 sp_object_read_attr(object, "pagecolor");
148 sp_object_read_attr(object, "inkscape:pageopacity");
149 sp_object_read_attr(object, "inkscape:pageshadow");
150 sp_object_read_attr(object, "inkscape:zoom");
151 sp_object_read_attr(object, "inkscape:cx");
152 sp_object_read_attr(object, "inkscape:cy");
153 sp_object_read_attr(object, "inkscape:window-width");
154 sp_object_read_attr(object, "inkscape:window-height");
155 sp_object_read_attr(object, "inkscape:window-x");
156 sp_object_read_attr(object, "inkscape:window-y");
157 sp_object_read_attr(object, "inkscape:snap-global");
158 sp_object_read_attr(object, "inkscape:snap-bbox");
159 sp_object_read_attr(object, "inkscape:snap-nodes");
160 sp_object_read_attr(object, "inkscape:snap-guide");
161 sp_object_read_attr(object, "inkscape:snap-center");
162 sp_object_read_attr(object, "inkscape:snap-intersection-grid-guide");
163 sp_object_read_attr(object, "inkscape:snap-intersection-line-segments");
164 sp_object_read_attr(object, "inkscape:object-paths");
165 sp_object_read_attr(object, "inkscape:object-nodes");
166 sp_object_read_attr(object, "inkscape:bbox-paths");
167 sp_object_read_attr(object, "inkscape:bbox-nodes");
168 sp_object_read_attr(object, "inkscape:current-layer");
169 sp_object_read_attr(object, "inkscape:connector-spacing");
171 /* Construct guideline list */
173 for (SPObject *o = sp_object_first_child(SP_OBJECT(og)) ; o != NULL; o = SP_OBJECT_NEXT(o) ) {
174 if (SP_IS_GUIDE(o)) {
175 SPGuide * g = SP_GUIDE(o);
176 nv->guides = g_slist_prepend(nv->guides, g);
177 g_object_set(G_OBJECT(g), "color", nv->guidecolor, "hicolor", nv->guidehicolor, NULL);
178 }
179 }
180 }
182 static void sp_namedview_release(SPObject *object)
183 {
184 SPNamedView *namedview = (SPNamedView *) object;
186 if (namedview->guides) {
187 g_slist_free(namedview->guides);
188 namedview->guides = NULL;
189 }
191 // delete grids:
192 while ( namedview->grids ) {
193 Inkscape::CanvasGrid *gr = (Inkscape::CanvasGrid *)namedview->grids->data;
194 delete gr;
195 namedview->grids = g_slist_remove_link(namedview->grids, namedview->grids);
196 }
198 if (((SPObjectClass *) parent_class)->release) {
199 ((SPObjectClass *) parent_class)->release(object);
200 }
202 namedview->snap_manager.~SnapManager();
203 }
205 static void sp_namedview_set(SPObject *object, unsigned int key, const gchar *value)
206 {
207 SPNamedView *nv = SP_NAMEDVIEW(object);
208 SPUnit const &px = sp_unit_get_by_id(SP_UNIT_PX);
210 switch (key) {
211 case SP_ATTR_VIEWONLY:
212 nv->editable = (!value);
213 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
214 break;
215 case SP_ATTR_SHOWGUIDES:
216 if (!value) { // show guides if not specified, for backwards compatibility
217 nv->showguides = TRUE;
218 } else {
219 nv->showguides = sp_str_to_bool(value);
220 }
221 sp_namedview_setup_guides(nv);
222 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
223 break;
224 case SP_ATTR_SHOWGRIDS:
225 if (!value) { // show grids if not specified, for backwards compatibility
226 nv->grids_visible = false;
227 } else {
228 nv->grids_visible = sp_str_to_bool(value);
229 }
230 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
231 break;
232 case SP_ATTR_GRIDTOLERANCE:
233 nv->gridtoleranceunit = &px;
234 nv->gridtolerance = DEFAULTTOLERANCE;
235 if (value) {
236 sp_nv_read_length(value, SP_UNIT_ABSOLUTE | SP_UNIT_DEVICE, &nv->gridtolerance, &nv->gridtoleranceunit);
237 }
238 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
239 break;
240 case SP_ATTR_GUIDETOLERANCE:
241 nv->guidetoleranceunit = &px;
242 nv->guidetolerance = DEFAULTTOLERANCE;
243 if (value) {
244 sp_nv_read_length(value, SP_UNIT_ABSOLUTE | SP_UNIT_DEVICE, &nv->guidetolerance, &nv->guidetoleranceunit);
245 }
246 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
247 break;
248 case SP_ATTR_OBJECTTOLERANCE:
249 nv->objecttoleranceunit = &px;
250 nv->objecttolerance = DEFAULTTOLERANCE;
251 if (value) {
252 sp_nv_read_length(value, SP_UNIT_ABSOLUTE | SP_UNIT_DEVICE, &nv->objecttolerance, &nv->objecttoleranceunit);
253 }
254 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
255 break;
256 case SP_ATTR_GUIDECOLOR:
257 nv->guidecolor = (nv->guidecolor & 0xff) | (DEFAULTGUIDECOLOR & 0xffffff00);
258 if (value) {
259 nv->guidecolor = (nv->guidecolor & 0xff) | sp_svg_read_color(value, nv->guidecolor);
260 }
261 for (GSList *l = nv->guides; l != NULL; l = l->next) {
262 g_object_set(G_OBJECT(l->data), "color", nv->guidecolor, NULL);
263 }
264 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
265 break;
266 case SP_ATTR_GUIDEOPACITY:
267 nv->guidecolor = (nv->guidecolor & 0xffffff00) | (DEFAULTGUIDECOLOR & 0xff);
268 sp_nv_read_opacity(value, &nv->guidecolor);
269 for (GSList *l = nv->guides; l != NULL; l = l->next) {
270 g_object_set(G_OBJECT(l->data), "color", nv->guidecolor, NULL);
271 }
272 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
273 break;
274 case SP_ATTR_GUIDEHICOLOR:
275 nv->guidehicolor = (nv->guidehicolor & 0xff) | (DEFAULTGUIDEHICOLOR & 0xffffff00);
276 if (value) {
277 nv->guidehicolor = (nv->guidehicolor & 0xff) | sp_svg_read_color(value, nv->guidehicolor);
278 }
279 for (GSList *l = nv->guides; l != NULL; l = l->next) {
280 g_object_set(G_OBJECT(l->data), "hicolor", nv->guidehicolor, NULL);
281 }
282 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
283 break;
284 case SP_ATTR_GUIDEHIOPACITY:
285 nv->guidehicolor = (nv->guidehicolor & 0xffffff00) | (DEFAULTGUIDEHICOLOR & 0xff);
286 sp_nv_read_opacity(value, &nv->guidehicolor);
287 for (GSList *l = nv->guides; l != NULL; l = l->next) {
288 g_object_set(G_OBJECT(l->data), "hicolor", nv->guidehicolor, NULL);
289 }
290 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
291 break;
292 case SP_ATTR_SHOWBORDER:
293 nv->showborder = (value) ? sp_str_to_bool (value) : TRUE;
294 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
295 break;
296 case SP_ATTR_BORDERLAYER:
297 nv->borderlayer = SP_BORDER_LAYER_BOTTOM;
298 if (value && !strcasecmp(value, "true")) nv->borderlayer = SP_BORDER_LAYER_TOP;
299 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
300 break;
301 case SP_ATTR_BORDERCOLOR:
302 nv->bordercolor = (nv->bordercolor & 0xff) | (DEFAULTBORDERCOLOR & 0xffffff00);
303 if (value) {
304 nv->bordercolor = (nv->bordercolor & 0xff) | sp_svg_read_color (value, nv->bordercolor);
305 }
306 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
307 break;
308 case SP_ATTR_BORDEROPACITY:
309 nv->bordercolor = (nv->bordercolor & 0xffffff00) | (DEFAULTBORDERCOLOR & 0xff);
310 sp_nv_read_opacity(value, &nv->bordercolor);
311 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
312 break;
313 case SP_ATTR_PAGECOLOR:
314 nv->pagecolor = (nv->pagecolor & 0xff) | (DEFAULTPAGECOLOR & 0xffffff00);
315 if (value) {
316 nv->pagecolor = (nv->pagecolor & 0xff) | sp_svg_read_color(value, nv->pagecolor);
317 }
318 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
319 break;
320 case SP_ATTR_INKSCAPE_PAGEOPACITY:
321 nv->pagecolor = (nv->pagecolor & 0xffffff00) | (DEFAULTPAGECOLOR & 0xff);
322 sp_nv_read_opacity(value, &nv->pagecolor);
323 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
324 break;
325 case SP_ATTR_INKSCAPE_PAGESHADOW:
326 nv->pageshadow = value? atoi(value) : 2; // 2 is the default
327 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
328 break;
329 case SP_ATTR_SHOWPAGESHADOW:
330 nv->showpageshadow = (value) ? sp_str_to_bool(value) : TRUE;
331 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
332 break;
333 case SP_ATTR_INKSCAPE_ZOOM:
334 nv->zoom = value ? g_ascii_strtod(value, NULL) : 0; // zero means not set
335 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
336 break;
337 case SP_ATTR_INKSCAPE_CX:
338 nv->cx = value ? g_ascii_strtod(value, NULL) : HUGE_VAL; // HUGE_VAL means not set
339 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
340 break;
341 case SP_ATTR_INKSCAPE_CY:
342 nv->cy = value ? g_ascii_strtod(value, NULL) : HUGE_VAL; // HUGE_VAL means not set
343 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
344 break;
345 case SP_ATTR_INKSCAPE_WINDOW_WIDTH:
346 nv->window_width = value? atoi(value) : -1; // -1 means not set
347 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
348 break;
349 case SP_ATTR_INKSCAPE_WINDOW_HEIGHT:
350 nv->window_height = value ? atoi(value) : -1; // -1 means not set
351 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
352 break;
353 case SP_ATTR_INKSCAPE_WINDOW_X:
354 nv->window_x = value ? atoi(value) : -1; // -1 means not set
355 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
356 break;
357 case SP_ATTR_INKSCAPE_WINDOW_Y:
358 nv->window_y = value ? atoi(value) : -1; // -1 means not set
359 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
360 break;
361 case SP_ATTR_INKSCAPE_SNAP_GLOBAL:
362 nv->snap_manager.setSnapEnabledGlobally(value ? sp_str_to_bool(value) : TRUE);
363 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
364 break;
365 case SP_ATTR_INKSCAPE_SNAP_BBOX:
366 nv->snap_manager.setSnapModeBBox(value ? sp_str_to_bool(value) : FALSE);
367 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
368 break;
369 case SP_ATTR_INKSCAPE_SNAP_NODES:
370 nv->snap_manager.setSnapModeNode(value ? sp_str_to_bool(value) : TRUE);
371 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
372 break;
373 case SP_ATTR_INKSCAPE_SNAP_CENTER:
374 nv->snap_manager.setIncludeItemCenter(value ? sp_str_to_bool(value) : FALSE);
375 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
376 break;
377 case SP_ATTR_INKSCAPE_SNAP_GUIDE:
378 nv->snap_manager.setSnapModeGuide(value ? sp_str_to_bool(value) : FALSE);
379 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
380 break;
381 case SP_ATTR_INKSCAPE_SNAP_INTERS_GRIDGUIDE:
382 nv->snap_manager.setSnapIntersectionGG(value ? sp_str_to_bool(value) : TRUE);
383 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
384 break;
385 case SP_ATTR_INKSCAPE_SNAP_INTERS_LINESEGM:
386 nv->snap_manager.setSnapIntersectionLS(value ? sp_str_to_bool(value) : FALSE);
387 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
388 break;
389 case SP_ATTR_INKSCAPE_OBJECT_PATHS:
390 nv->snap_manager.object.setSnapToItemPath(value ? sp_str_to_bool(value) : FALSE);
391 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
392 break;
393 case SP_ATTR_INKSCAPE_OBJECT_NODES:
394 nv->snap_manager.object.setSnapToItemNode(value ? sp_str_to_bool(value) : FALSE);
395 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
396 break;
397 case SP_ATTR_INKSCAPE_BBOX_PATHS:
398 nv->snap_manager.object.setSnapToBBoxPath(value ? sp_str_to_bool(value) : FALSE);
399 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
400 break;
401 case SP_ATTR_INKSCAPE_BBOX_NODES:
402 nv->snap_manager.object.setSnapToBBoxNode(value ? sp_str_to_bool(value) : FALSE);
403 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
404 break;
405 case SP_ATTR_INKSCAPE_CURRENT_LAYER:
406 nv->default_layer_id = value ? g_quark_from_string(value) : 0;
407 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
408 break;
409 case SP_ATTR_INKSCAPE_CONNECTOR_SPACING:
410 nv->connector_spacing = value ? g_ascii_strtod(value, NULL) :
411 defaultConnSpacing;
412 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
413 break;
414 case SP_ATTR_INKSCAPE_DOCUMENT_UNITS: {
415 /* The default unit if the document doesn't override this: e.g. for files saved as
416 * `plain SVG', or non-inkscape files, or files created by an inkscape 0.40 &
417 * earlier.
418 *
419 * Here we choose `px': useful for screen-destined SVGs, and fewer bug reports
420 * about "not the same numbers as what's in the SVG file" (at least for documents
421 * without a viewBox attribute on the root <svg> element). Similarly, it's also
422 * the most reliable unit (i.e. least likely to be wrong in different viewing
423 * conditions) for viewBox-less SVG files given that it's the unit that inkscape
424 * uses for all coordinates.
425 *
426 * For documents that do have a viewBox attribute on the root <svg> element, it
427 * might be better if we used either viewBox coordinates or if we used the unit of
428 * say the width attribute of the root <svg> element. However, these pose problems
429 * in that they aren't in general absolute units as currently required by
430 * doc_units.
431 */
432 SPUnit const *new_unit = &sp_unit_get_by_id(SP_UNIT_PX);
434 if (value) {
435 SPUnit const *const req_unit = sp_unit_get_by_abbreviation(value);
436 if ( req_unit == NULL ) {
437 g_warning("Unrecognized unit `%s'", value);
438 /* fixme: Document errors should be reported in the status bar or
439 * the like (e.g. as per
440 * http://www.w3.org/TR/SVG11/implnote.html#ErrorProcessing); g_log
441 * should be only for programmer errors. */
442 } else if ( req_unit->base == SP_UNIT_ABSOLUTE ||
443 req_unit->base == SP_UNIT_DEVICE ) {
444 new_unit = req_unit;
445 } else {
446 g_warning("Document units must be absolute like `mm', `pt' or `px', but found `%s'",
447 value);
448 /* fixme: Don't use g_log (see above). */
449 }
450 }
451 nv->doc_units = new_unit;
452 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
453 break;
454 }
455 default:
456 if (((SPObjectClass *) (parent_class))->set) {
457 ((SPObjectClass *) (parent_class))->set(object, key, value);
458 }
459 break;
460 }
461 }
463 /**
464 * add a grid item from SVG-repr. Check if this namedview already has a gridobject for this one! If desktop=null, add grid-canvasitem to all desktops of this namedview,
465 * otherwise only add it to the specified desktop.
466 */
467 static Inkscape::CanvasGrid*
468 sp_namedview_add_grid(SPNamedView *nv, Inkscape::XML::Node *repr, SPDesktop *desktop) {
469 Inkscape::CanvasGrid* grid = NULL;
470 //check if namedview already has an object for this grid
471 for (GSList *l = nv->grids; l != NULL; l = l->next) {
472 Inkscape::CanvasGrid* g = (Inkscape::CanvasGrid*) l->data;
473 if (repr == g->repr) {
474 grid = g;
475 break;
476 }
477 }
479 if (!grid) {
480 //create grid object
481 Inkscape::GridType gridtype = Inkscape::CanvasGrid::getGridTypeFromSVGName(repr->attribute("type"));
482 SPDocument *doc = NULL;
483 if (desktop)
484 doc = sp_desktop_document(desktop);
485 else
486 doc = sp_desktop_document(static_cast<SPDesktop*>(nv->views->data));
487 grid = Inkscape::CanvasGrid::NewGrid(nv, repr, doc, gridtype);
488 nv->grids = g_slist_append(nv->grids, grid);
489 //Initialize the snapping parameters for the new grid
490 bool enabled_node = nv->snap_manager.getSnapModeNode();
491 bool enabled_bbox = nv->snap_manager.getSnapModeBBox();
492 grid->snapper->setSnapFrom(Inkscape::Snapper::SNAPPOINT_NODE, enabled_node);
493 grid->snapper->setSnapFrom(Inkscape::Snapper::SNAPPOINT_BBOX, enabled_bbox);
494 }
496 if (!desktop) {
497 //add canvasitem to all desktops
498 for (GSList *l = nv->views; l != NULL; l = l->next) {
499 SPDesktop *dt = static_cast<SPDesktop*>(l->data);
500 grid->createCanvasItem(dt);
501 }
502 } else {
503 //add canvasitem only for specified desktop
504 grid->createCanvasItem(desktop);
505 }
507 return grid;
508 }
510 static void sp_namedview_child_added(SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *ref)
511 {
512 SPNamedView *nv = (SPNamedView *) object;
514 if (((SPObjectClass *) (parent_class))->child_added) {
515 (* ((SPObjectClass *) (parent_class))->child_added)(object, child, ref);
516 }
518 if (!strcmp(child->name(), "inkscape:grid")) {
519 sp_namedview_add_grid(nv, child, NULL);
520 } else {
521 SPObject *no = object->document->getObjectByRepr(child);
522 if ( !SP_IS_OBJECT(no) )
523 return;
525 if (SP_IS_GUIDE(no)) {
526 SPGuide *g = (SPGuide *) no;
527 nv->guides = g_slist_prepend(nv->guides, g);
528 g_object_set(G_OBJECT(g), "color", nv->guidecolor, "hicolor", nv->guidehicolor, NULL);
529 if (nv->editable) {
530 for (GSList *l = nv->views; l != NULL; l = l->next) {
531 sp_guide_show(g, static_cast<SPDesktop*>(l->data)->guides, (GCallback) sp_dt_guide_event);
532 if (static_cast<SPDesktop*>(l->data)->guides_active)
533 sp_guide_sensitize(g,
534 sp_desktop_canvas(static_cast<SPDesktop*> (l->data)),
535 TRUE);
536 if (nv->showguides) {
537 for (GSList *v = SP_GUIDE(g)->views; v != NULL; v = v->next) {
538 sp_canvas_item_show(SP_CANVAS_ITEM(v->data));
539 }
540 } else {
541 for (GSList *v = SP_GUIDE(g)->views; v != NULL; v = v->next) {
542 sp_canvas_item_hide(SP_CANVAS_ITEM(v->data));
543 }
544 }
545 }
546 }
547 }
548 }
549 }
551 static void sp_namedview_remove_child(SPObject *object, Inkscape::XML::Node *child)
552 {
553 SPNamedView *nv = (SPNamedView *) object;
555 if (!strcmp(child->name(), "inkscape:grid")) {
556 for ( GSList *iter = nv->grids ; iter ; iter = iter->next ) {
557 Inkscape::CanvasGrid *gr = (Inkscape::CanvasGrid *)iter->data;
558 if ( gr->repr == child ) {
559 delete gr;
560 nv->grids = g_slist_remove_link(nv->grids, iter);
561 break;
562 }
563 }
564 } else {
565 GSList **ref = &nv->guides;
566 for ( GSList *iter = nv->guides ; iter ; iter = iter->next ) {
567 if ( SP_OBJECT_REPR((SPObject *)iter->data) == child ) {
568 *ref = iter->next;
569 iter->next = NULL;
570 g_slist_free_1(iter);
571 break;
572 }
573 ref = &iter->next;
574 }
575 }
577 if (((SPObjectClass *) (parent_class))->remove_child) {
578 (* ((SPObjectClass *) (parent_class))->remove_child)(object, child);
579 }
580 }
582 static Inkscape::XML::Node *sp_namedview_write(SPObject *object, Inkscape::XML::Node *repr, guint flags)
583 {
584 if ( ( flags & SP_OBJECT_WRITE_EXT ) &&
585 repr != SP_OBJECT_REPR(object) )
586 {
587 if (repr) {
588 repr->mergeFrom(SP_OBJECT_REPR(object), "id");
589 } else {
590 /// \todo FIXME: Plumb an appropriate XML::Document into this
591 repr = SP_OBJECT_REPR(object)->duplicate(NULL);
592 }
593 }
595 return repr;
596 }
598 void SPNamedView::show(SPDesktop *desktop)
599 {
600 for (GSList *l = guides; l != NULL; l = l->next) {
601 sp_guide_show(SP_GUIDE(l->data), desktop->guides, (GCallback) sp_dt_guide_event);
602 if (desktop->guides_active) {
603 sp_guide_sensitize(SP_GUIDE(l->data), sp_desktop_canvas(desktop), TRUE);
604 }
605 if (showguides) {
606 for (GSList *v = SP_GUIDE(l->data)->views; v != NULL; v = v->next) {
607 sp_canvas_item_show(SP_CANVAS_ITEM(v->data));
608 }
609 } else {
610 for (GSList *v = SP_GUIDE(l->data)->views; v != NULL; v = v->next) {
611 sp_canvas_item_hide(SP_CANVAS_ITEM(v->data));
612 }
613 }
614 }
616 views = g_slist_prepend(views, desktop);
618 // generate grids specified in SVG:
619 Inkscape::XML::Node *repr = SP_OBJECT_REPR(this);
620 if (repr) {
621 for (Inkscape::XML::Node * child = repr->firstChild() ; child != NULL; child = child->next() ) {
622 if (!strcmp(child->name(), "inkscape:grid")) {
623 sp_namedview_add_grid(this, child, desktop);
624 }
625 }
626 }
628 desktop->showGrids(grids_visible, false);
629 }
631 #define MIN_ONSCREEN_DISTANCE 50
633 /*
634 * Restores window geometry from the document settings or defaults in prefs
635 */
636 void sp_namedview_window_from_document(SPDesktop *desktop)
637 {
638 SPNamedView *nv = desktop->namedview;
639 gint geometry_from_file =
640 (1==prefs_get_int_attribute("options.savewindowgeometry", "value", 0));
642 // restore window size and position stored with the document
643 if (geometry_from_file) {
644 gint w = MIN(gdk_screen_width(), nv->window_width);
645 gint h = MIN(gdk_screen_height(), nv->window_height);
646 gint x = MIN(gdk_screen_width() - MIN_ONSCREEN_DISTANCE, nv->window_x);
647 gint y = MIN(gdk_screen_height() - MIN_ONSCREEN_DISTANCE, nv->window_y);
648 if (w>0 && h>0 && x>0 && y>0) {
649 x = MIN(gdk_screen_width() - w, x);
650 y = MIN(gdk_screen_height() - h, y);
651 }
652 if (w>0 && h>0) {
653 desktop->setWindowSize(w, h);
654 }
655 if (x>0 && y>0) {
656 desktop->setWindowPosition(NR::Point(x, y));
657 }
658 }
660 // restore zoom and view
661 if (nv->zoom != 0 && nv->zoom != HUGE_VAL && !isNaN(nv->zoom)
662 && nv->cx != HUGE_VAL && !isNaN(nv->cx)
663 && nv->cy != HUGE_VAL && !isNaN(nv->cy)) {
664 desktop->zoom_absolute(nv->cx, nv->cy, nv->zoom);
665 } else if (sp_desktop_document(desktop)) { // document without saved zoom, zoom to its page
666 desktop->zoom_page();
667 }
669 // cancel any history of zooms up to this point
670 if (desktop->zooms_past) {
671 g_list_free(desktop->zooms_past);
672 desktop->zooms_past = NULL;
673 }
674 }
676 void sp_namedview_update_layers_from_document (SPDesktop *desktop)
677 {
678 SPObject *layer = NULL;
679 SPDocument *document = desktop->doc();
680 SPNamedView *nv = desktop->namedview;
681 if ( nv->default_layer_id != 0 ) {
682 layer = document->getObjectById(g_quark_to_string(nv->default_layer_id));
683 }
684 // don't use that object if it's not at least group
685 if ( !layer || !SP_IS_GROUP(layer) ) {
686 layer = NULL;
687 }
688 // if that didn't work out, look for the topmost layer
689 if (!layer) {
690 SPObject *iter = sp_object_first_child(SP_DOCUMENT_ROOT(document));
691 for ( ; iter ; iter = SP_OBJECT_NEXT(iter) ) {
692 if (desktop->isLayer(iter)) {
693 layer = iter;
694 }
695 }
696 }
697 if (layer) {
698 desktop->setCurrentLayer(layer);
699 }
701 // FIXME: find a better place to do this
702 desktop->event_log->updateUndoVerbs();
703 }
705 void sp_namedview_document_from_window(SPDesktop *desktop)
706 {
707 gint save_geometry_in_file =
708 (1==prefs_get_int_attribute("options.savewindowgeometry", "value", 0));
709 Inkscape::XML::Node *view = SP_OBJECT_REPR(desktop->namedview);
710 NR::Rect const r = desktop->get_display_area();
712 // saving window geometry is not undoable
713 bool saved = sp_document_get_undo_sensitive(sp_desktop_document(desktop));
714 sp_document_set_undo_sensitive(sp_desktop_document(desktop), false);
716 sp_repr_set_svg_double(view, "inkscape:zoom", desktop->current_zoom());
717 sp_repr_set_svg_double(view, "inkscape:cx", r.midpoint()[NR::X]);
718 sp_repr_set_svg_double(view, "inkscape:cy", r.midpoint()[NR::Y]);
720 if (save_geometry_in_file) {
721 gint w, h, x, y;
722 desktop->getWindowGeometry(x, y, w, h);
723 sp_repr_set_int(view, "inkscape:window-width", w);
724 sp_repr_set_int(view, "inkscape:window-height", h);
725 sp_repr_set_int(view, "inkscape:window-x", x);
726 sp_repr_set_int(view, "inkscape:window-y", y);
727 }
729 view->setAttribute("inkscape:current-layer", SP_OBJECT_ID(desktop->currentLayer()));
731 // restore undoability
732 sp_document_set_undo_sensitive(sp_desktop_document(desktop), saved);
733 }
735 void SPNamedView::hide(SPDesktop const *desktop)
736 {
737 g_assert(desktop != NULL);
738 g_assert(g_slist_find(views, desktop));
740 for (GSList *l = guides; l != NULL; l = l->next) {
741 sp_guide_hide(SP_GUIDE(l->data), sp_desktop_canvas(desktop));
742 }
744 views = g_slist_remove(views, desktop);
746 // delete grids:
747 while ( grids ) {
748 Inkscape::CanvasGrid *gr = (Inkscape::CanvasGrid *)grids->data;
749 delete gr;
750 grids = g_slist_remove_link(grids, grids);
751 }
752 }
754 void SPNamedView::activateGuides(gpointer desktop, gboolean active)
755 {
756 g_assert(desktop != NULL);
757 g_assert(g_slist_find(views, desktop));
759 SPDesktop *dt = static_cast<SPDesktop*>(desktop);
761 for (GSList *l = guides; l != NULL; l = l->next) {
762 sp_guide_sensitize(SP_GUIDE(l->data), sp_desktop_canvas(dt), active);
763 }
764 }
766 static void sp_namedview_setup_guides(SPNamedView *nv)
767 {
768 for (GSList *l = nv->guides; l != NULL; l = l->next) {
769 if (nv->showguides) {
770 for (GSList *v = SP_GUIDE(l->data)->views; v != NULL; v = v->next) {
771 sp_canvas_item_show(SP_CANVAS_ITEM(v->data));
772 }
773 } else {
774 for (GSList *v = SP_GUIDE(l->data)->views; v != NULL; v = v->next) {
775 sp_canvas_item_hide(SP_CANVAS_ITEM(v->data));
776 }
777 }
778 }
779 }
781 void sp_namedview_toggle_guides(SPDocument *doc, Inkscape::XML::Node *repr)
782 {
783 unsigned int v;
784 unsigned int set = sp_repr_get_boolean(repr, "showguides", &v);
785 if (!set) { // hide guides if not specified, for backwards compatibility
786 v = FALSE;
787 } else {
788 v = !v;
789 }
791 bool saved = sp_document_get_undo_sensitive(doc);
792 sp_document_set_undo_sensitive(doc, false);
794 sp_repr_set_boolean(repr, "showguides", v);
796 doc->rroot->setAttribute("sodipodi:modified", "true");
797 sp_document_set_undo_sensitive(doc, saved);
798 }
800 void sp_namedview_show_grids(SPNamedView * namedview, bool show, bool dirty_document)
801 {
802 namedview->grids_visible = show;
804 SPDocument *doc = SP_OBJECT_DOCUMENT (namedview);
805 Inkscape::XML::Node *repr = SP_OBJECT_REPR(namedview);
807 bool saved = sp_document_get_undo_sensitive(doc);
808 sp_document_set_undo_sensitive(doc, false);
810 sp_repr_set_boolean(repr, "showgrid", namedview->grids_visible);
812 /* we don't want the document to get dirty on startup; that's when
813 we call this function with dirty_document = false */
814 if (dirty_document) {
815 doc->rroot->setAttribute("sodipodi:modified", "true");
816 }
817 sp_document_set_undo_sensitive(doc, saved);
818 }
820 gchar const *SPNamedView::getName() const
821 {
822 SPException ex;
823 SP_EXCEPTION_INIT(&ex);
824 return sp_object_getAttribute(SP_OBJECT(this), "id", &ex);
825 }
827 guint SPNamedView::getViewCount()
828 {
829 return ++viewcount;
830 }
832 GSList const *SPNamedView::getViewList() const
833 {
834 return views;
835 }
837 /* This should be moved somewhere */
839 static gboolean sp_str_to_bool(const gchar *str)
840 {
841 if (str) {
842 if (!g_strcasecmp(str, "true") ||
843 !g_strcasecmp(str, "yes") ||
844 !g_strcasecmp(str, "y") ||
845 (atoi(str) != 0)) {
846 return TRUE;
847 }
848 }
850 return FALSE;
851 }
853 /* fixme: Collect all these length parsing methods and think common sane API */
855 static gboolean sp_nv_read_length(const gchar *str, guint base, gdouble *val, const SPUnit **unit)
856 {
857 if (!str) {
858 return FALSE;
859 }
861 gchar *u;
862 gdouble v = g_ascii_strtod(str, &u);
863 if (!u) {
864 return FALSE;
865 }
866 while (isspace(*u)) {
867 u += 1;
868 }
870 if (!*u) {
871 /* No unit specified - keep default */
872 *val = v;
873 return TRUE;
874 }
876 if (base & SP_UNIT_DEVICE) {
877 if (u[0] && u[1] && !isalnum(u[2]) && !strncmp(u, "px", 2)) {
878 *unit = &sp_unit_get_by_id(SP_UNIT_PX);
879 *val = v;
880 return TRUE;
881 }
882 }
884 if (base & SP_UNIT_ABSOLUTE) {
885 if (!strncmp(u, "pt", 2)) {
886 *unit = &sp_unit_get_by_id(SP_UNIT_PT);
887 } else if (!strncmp(u, "mm", 2)) {
888 *unit = &sp_unit_get_by_id(SP_UNIT_MM);
889 } else if (!strncmp(u, "cm", 2)) {
890 *unit = &sp_unit_get_by_id(SP_UNIT_CM);
891 } else if (!strncmp(u, "m", 1)) {
892 *unit = &sp_unit_get_by_id(SP_UNIT_M);
893 } else if (!strncmp(u, "in", 2)) {
894 *unit = &sp_unit_get_by_id(SP_UNIT_IN);
895 } else {
896 return FALSE;
897 }
898 *val = v;
899 return TRUE;
900 }
902 return FALSE;
903 }
905 static gboolean sp_nv_read_opacity(const gchar *str, guint32 *color)
906 {
907 if (!str) {
908 return FALSE;
909 }
911 gchar *u;
912 gdouble v = g_ascii_strtod(str, &u);
913 if (!u) {
914 return FALSE;
915 }
916 v = CLAMP(v, 0.0, 1.0);
918 *color = (*color & 0xffffff00) | (guint32) floor(v * 255.9999);
920 return TRUE;
921 }
923 SPNamedView *sp_document_namedview(SPDocument *document, const gchar *id)
924 {
925 g_return_val_if_fail(document != NULL, NULL);
927 SPObject *nv = sp_item_group_get_child_by_name((SPGroup *) document->root, NULL, "sodipodi:namedview");
928 g_assert(nv != NULL);
930 if (id == NULL) {
931 return (SPNamedView *) nv;
932 }
934 while (nv && strcmp(nv->id, id)) {
935 nv = sp_item_group_get_child_by_name((SPGroup *) document->root, nv, "sodipodi:namedview");
936 }
938 return (SPNamedView *) nv;
939 }
941 /**
942 * Returns namedview's default metric.
943 */
944 SPMetric SPNamedView::getDefaultMetric() const
945 {
946 if (doc_units) {
947 return sp_unit_get_metric(doc_units);
948 } else {
949 return SP_PT;
950 }
951 }
953 /**
954 * Returns the first grid it could find that isEnabled(). Returns NULL, if none is enabled
955 */
956 Inkscape::CanvasGrid * sp_namedview_get_first_enabled_grid(SPNamedView *namedview)
957 {
958 for (GSList const * l = namedview->grids; l != NULL; l = l->next) {
959 Inkscape::CanvasGrid * grid = (Inkscape::CanvasGrid*) l->data;
960 if (grid->isEnabled())
961 return grid;
962 }
964 return NULL;
965 }
968 /*
969 Local Variables:
970 mode:c++
971 c-file-style:"stroustrup"
972 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
973 indent-tabs-mode:nil
974 fill-column:99
975 End:
976 */
977 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :