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) 1999-2005 Authors
11 * Copyright (C) 2000-2001 Ximian, Inc.
12 *
13 * Released under GNU GPL, read the file 'COPYING' for more information
14 */
16 #include "config.h"
18 #include "display/canvas-grid.h"
19 #include "helper/units.h"
20 #include "svg/svg-color.h"
21 #include "xml/repr.h"
22 #include "attributes.h"
23 #include "document.h"
24 #include "desktop-events.h"
25 #include "desktop-handles.h"
26 #include "sp-guide.h"
27 #include "sp-item-group.h"
28 #include "sp-namedview.h"
29 #include "prefs-utils.h"
30 #include "desktop.h"
31 #include "conn-avoid-ref.h" // for defaultConnSpacing.
33 #include "isnan.h" //temp fix for isnan(). include last
35 #define DEFAULTTOLERANCE 0.4
36 #define DEFAULTGRIDCOLOR 0x3f3fff25
37 #define DEFAULTGRIDEMPCOLOR 0x3f3fff60
38 #define DEFAULTGRIDEMPSPACING 5
39 #define DEFAULTGUIDECOLOR 0x0000ff7f
40 #define DEFAULTGUIDEHICOLOR 0xff00007f
41 #define DEFAULTBORDERCOLOR 0x000000ff
42 #define DEFAULTPAGECOLOR 0xffffff00
44 static void sp_namedview_class_init(SPNamedViewClass *klass);
45 static void sp_namedview_init(SPNamedView *namedview);
47 static void sp_namedview_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
48 static void sp_namedview_release(SPObject *object);
49 static void sp_namedview_set(SPObject *object, unsigned int key, const gchar *value);
50 static void sp_namedview_child_added(SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *ref);
51 static void sp_namedview_remove_child(SPObject *object, Inkscape::XML::Node *child);
52 static Inkscape::XML::Node *sp_namedview_write(SPObject *object, Inkscape::XML::Node *repr, guint flags);
54 static void sp_namedview_setup_guides(SPNamedView * nv);
56 static void sp_namedview_setup_grid(SPNamedView * nv);
57 static void sp_namedview_setup_grid_item(SPNamedView * nv, SPCanvasItem * item);
59 static gboolean sp_str_to_bool(const gchar *str);
60 static gboolean sp_nv_read_length(const gchar *str, guint base, gdouble *val, const SPUnit **unit);
61 static gboolean sp_nv_read_opacity(const gchar *str, guint32 *color);
63 static SPObjectGroupClass * parent_class;
65 GType
66 sp_namedview_get_type()
67 {
68 static GType namedview_type = 0;
69 if (!namedview_type) {
70 GTypeInfo namedview_info = {
71 sizeof(SPNamedViewClass),
72 NULL, /* base_init */
73 NULL, /* base_finalize */
74 (GClassInitFunc) sp_namedview_class_init,
75 NULL, /* class_finalize */
76 NULL, /* class_data */
77 sizeof(SPNamedView),
78 16, /* n_preallocs */
79 (GInstanceInitFunc) sp_namedview_init,
80 NULL, /* value_table */
81 };
82 namedview_type = g_type_register_static(SP_TYPE_OBJECTGROUP, "SPNamedView", &namedview_info, (GTypeFlags)0);
83 }
84 return namedview_type;
85 }
87 static void sp_namedview_class_init(SPNamedViewClass * klass)
88 {
89 GObjectClass * gobject_class;
90 SPObjectClass * sp_object_class;
92 gobject_class = (GObjectClass *) klass;
93 sp_object_class = (SPObjectClass *) klass;
95 parent_class = (SPObjectGroupClass*) g_type_class_ref(SP_TYPE_OBJECTGROUP);
97 sp_object_class->build = sp_namedview_build;
98 sp_object_class->release = sp_namedview_release;
99 sp_object_class->set = sp_namedview_set;
100 sp_object_class->child_added = sp_namedview_child_added;
101 sp_object_class->remove_child = sp_namedview_remove_child;
102 sp_object_class->write = sp_namedview_write;
103 }
105 static void sp_namedview_init(SPNamedView *nv)
106 {
107 nv->editable = TRUE;
108 nv->showgrid = FALSE;
109 nv->showguides = TRUE;
110 nv->showborder = TRUE;
111 nv->showpageshadow = TRUE;
113 nv->guides = NULL;
114 nv->viewcount = 0;
116 nv->default_layer_id = 0;
118 nv->connector_spacing = defaultConnSpacing;
120 new (&nv->snap_manager) SnapManager(nv);
121 }
123 static void sp_namedview_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)
124 {
125 SPNamedView *nv = (SPNamedView *) object;
126 SPObjectGroup *og = (SPObjectGroup *) object;
128 if (((SPObjectClass *) (parent_class))->build) {
129 (* ((SPObjectClass *) (parent_class))->build)(object, document, repr);
130 }
132 sp_object_read_attr(object, "inkscape:document-units");
133 sp_object_read_attr(object, "viewonly");
134 sp_object_read_attr(object, "showgrid");
135 sp_object_read_attr(object, "showguides");
136 sp_object_read_attr(object, "gridtolerance");
137 sp_object_read_attr(object, "guidetolerance");
138 sp_object_read_attr(object, "objecttolerance");
139 sp_object_read_attr(object, "inkscape:has_abs_tolerance");
140 sp_object_read_attr(object, "gridoriginx");
141 sp_object_read_attr(object, "gridoriginy");
142 sp_object_read_attr(object, "gridspacingx");
143 sp_object_read_attr(object, "gridspacingy");
144 sp_object_read_attr(object, "gridempspacing");
145 sp_object_read_attr(object, "gridcolor");
146 sp_object_read_attr(object, "gridempcolor");
147 sp_object_read_attr(object, "gridopacity");
148 sp_object_read_attr(object, "gridempopacity");
149 sp_object_read_attr(object, "guidecolor");
150 sp_object_read_attr(object, "guideopacity");
151 sp_object_read_attr(object, "guidehicolor");
152 sp_object_read_attr(object, "guidehiopacity");
153 sp_object_read_attr(object, "showborder");
154 sp_object_read_attr(object, "inkscape:showpageshadow");
155 sp_object_read_attr(object, "borderlayer");
156 sp_object_read_attr(object, "bordercolor");
157 sp_object_read_attr(object, "borderopacity");
158 sp_object_read_attr(object, "pagecolor");
159 sp_object_read_attr(object, "inkscape:pageopacity");
160 sp_object_read_attr(object, "inkscape:pageshadow");
161 sp_object_read_attr(object, "inkscape:zoom");
162 sp_object_read_attr(object, "inkscape:cx");
163 sp_object_read_attr(object, "inkscape:cy");
164 sp_object_read_attr(object, "inkscape:window-width");
165 sp_object_read_attr(object, "inkscape:window-height");
166 sp_object_read_attr(object, "inkscape:window-x");
167 sp_object_read_attr(object, "inkscape:window-y");
168 sp_object_read_attr(object, "inkscape:grid-bbox");
169 sp_object_read_attr(object, "inkscape:guide-bbox");
170 sp_object_read_attr(object, "inkscape:object-bbox");
171 sp_object_read_attr(object, "inkscape:grid-points");
172 sp_object_read_attr(object, "inkscape:guide-points");
173 sp_object_read_attr(object, "inkscape:object-points");
174 sp_object_read_attr(object, "inkscape:object-paths");
175 sp_object_read_attr(object, "inkscape:object-nodes");
176 sp_object_read_attr(object, "inkscape:current-layer");
177 sp_object_read_attr(object, "inkscape:connector-spacing");
179 /* Construct guideline list */
181 for (SPObject *o = sp_object_first_child(SP_OBJECT(og)) ; o != NULL; o = SP_OBJECT_NEXT(o) ) {
182 if (SP_IS_GUIDE(o)) {
183 SPGuide * g = SP_GUIDE(o);
184 nv->guides = g_slist_prepend(nv->guides, g);
185 g_object_set(G_OBJECT(g), "color", nv->guidecolor, "hicolor", nv->guidehicolor, NULL);
186 }
187 }
188 }
190 static void sp_namedview_release(SPObject *object)
191 {
192 SPNamedView *namedview = (SPNamedView *) object;
194 if (namedview->guides) {
195 g_slist_free(namedview->guides);
196 namedview->guides = NULL;
197 }
199 while (namedview->gridviews) {
200 gtk_object_unref(GTK_OBJECT(namedview->gridviews->data));
201 namedview->gridviews = g_slist_remove(namedview->gridviews, namedview->gridviews->data);
202 }
204 if (((SPObjectClass *) parent_class)->release) {
205 ((SPObjectClass *) parent_class)->release(object);
206 }
208 namedview->snap_manager.~SnapManager();
209 }
211 static void sp_namedview_set(SPObject *object, unsigned int key, const gchar *value)
212 {
213 SPNamedView *nv = SP_NAMEDVIEW(object);
214 SPUnit const &px = sp_unit_get_by_id(SP_UNIT_PX);
216 switch (key) {
217 case SP_ATTR_VIEWONLY:
218 nv->editable = (!value);
219 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
220 break;
221 case SP_ATTR_SHOWGRID:
222 nv->showgrid = sp_str_to_bool(value);
223 sp_namedview_setup_grid(nv);
224 /* Disable grid snaps if the grid is turned off */
225 nv->snap_manager.grid.setEnabled(nv->showgrid);
226 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
227 break;
228 case SP_ATTR_SHOWGUIDES:
229 if (!value) { // show guides if not specified, for backwards compatibility
230 nv->showguides = TRUE;
231 } else {
232 nv->showguides = sp_str_to_bool(value);
233 }
234 sp_namedview_setup_guides(nv);
235 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
236 break;
237 case SP_ATTR_GRIDTOLERANCE:
238 nv->gridtoleranceunit = &px;
239 nv->gridtolerance = DEFAULTTOLERANCE;
240 if (value) {
241 sp_nv_read_length(value, SP_UNIT_ABSOLUTE | SP_UNIT_DEVICE, &nv->gridtolerance, &nv->gridtoleranceunit);
242 }
243 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
244 break;
245 case SP_ATTR_GUIDETOLERANCE:
246 nv->guidetoleranceunit = &px;
247 nv->guidetolerance = DEFAULTTOLERANCE;
248 if (value) {
249 sp_nv_read_length(value, SP_UNIT_ABSOLUTE | SP_UNIT_DEVICE, &nv->guidetolerance, &nv->guidetoleranceunit);
250 }
251 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
252 break;
253 case SP_ATTR_OBJECTTOLERANCE:
254 nv->objecttoleranceunit = &px;
255 nv->objecttolerance = DEFAULTTOLERANCE;
256 if (value) {
257 sp_nv_read_length(value, SP_UNIT_ABSOLUTE | SP_UNIT_DEVICE, &nv->objecttolerance, &nv->objecttoleranceunit);
258 }
259 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
260 break;
261 case SP_ATTR_ABS_TOLERANCE:
262 if (!value)
263 nv->has_abs_tolerance = true;
264 else
265 nv->has_abs_tolerance = (sp_str_to_bool (value) == TRUE);
266 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
267 break;
268 case SP_ATTR_GRIDORIGINX:
269 case SP_ATTR_GRIDORIGINY:
270 {
271 unsigned const d = (key == SP_ATTR_GRIDORIGINY);
272 nv->gridunit = nv->doc_units;
273 nv->gridorigin[d] = 0.0;
274 if (value) {
275 sp_nv_read_length(value, SP_UNIT_ABSOLUTE | SP_UNIT_DEVICE, &nv->gridorigin[d], &nv->gridunit);
276 }
277 nv->gridorigin[d] = sp_units_get_pixels(nv->gridorigin[d], *(nv->gridunit));
278 sp_namedview_setup_grid(nv);
279 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
280 break;
281 }
282 case SP_ATTR_GRIDSPACINGX:
283 case SP_ATTR_GRIDSPACINGY:
284 {
285 unsigned const d = (key == SP_ATTR_GRIDSPACINGY);
286 nv->gridunit = nv->doc_units;
287 nv->gridspacing[d] = 1.0;
288 if (value) {
289 sp_nv_read_length(value, SP_UNIT_ABSOLUTE | SP_UNIT_DEVICE, &nv->gridspacing[d], &nv->gridunit);
290 }
291 nv->gridspacing[d] = sp_units_get_pixels(nv->gridspacing[d], *(nv->gridunit));
292 sp_namedview_setup_grid(nv);
293 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
294 break;
295 }
296 case SP_ATTR_GRIDCOLOR:
297 nv->gridcolor = (nv->gridcolor & 0xff) | (DEFAULTGRIDCOLOR & 0xffffff00);
298 if (value) {
299 nv->gridcolor = (nv->gridcolor & 0xff) | sp_svg_read_color(value, nv->gridcolor);
300 }
301 sp_namedview_setup_grid(nv);
302 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
303 break;
304 case SP_ATTR_GRIDEMPCOLOR:
305 nv->gridempcolor = (nv->gridempcolor & 0xff) | (DEFAULTGRIDEMPCOLOR & 0xffffff00);
306 if (value) {
307 nv->gridempcolor = (nv->gridempcolor & 0xff) | sp_svg_read_color(value, nv->gridempcolor);
308 }
309 sp_namedview_setup_grid(nv);
310 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
311 break;
312 case SP_ATTR_GRIDOPACITY:
313 nv->gridcolor = (nv->gridcolor & 0xffffff00) | (DEFAULTGRIDCOLOR & 0xff);
314 sp_nv_read_opacity(value, &nv->gridcolor);
315 sp_namedview_setup_grid(nv);
316 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
317 break;
318 case SP_ATTR_GRIDEMPOPACITY:
319 nv->gridempcolor = (nv->gridempcolor & 0xffffff00) | (DEFAULTGRIDEMPCOLOR & 0xff);
320 sp_nv_read_opacity(value, &nv->gridempcolor);
321 sp_namedview_setup_grid(nv);
322 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
323 break;
324 case SP_ATTR_GRIDEMPSPACING:
325 nv->gridempspacing = DEFAULTGRIDEMPSPACING;
326 if (value != NULL)
327 nv->gridempspacing = atoi(value);
328 sp_namedview_setup_grid(nv);
329 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
330 break;
331 case SP_ATTR_GUIDECOLOR:
332 nv->guidecolor = (nv->guidecolor & 0xff) | (DEFAULTGUIDECOLOR & 0xffffff00);
333 if (value) {
334 nv->guidecolor = (nv->guidecolor & 0xff) | sp_svg_read_color(value, nv->guidecolor);
335 }
336 for (GSList *l = nv->guides; l != NULL; l = l->next) {
337 g_object_set(G_OBJECT(l->data), "color", nv->guidecolor, NULL);
338 }
339 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
340 break;
341 case SP_ATTR_GUIDEOPACITY:
342 nv->guidecolor = (nv->guidecolor & 0xffffff00) | (DEFAULTGUIDECOLOR & 0xff);
343 sp_nv_read_opacity(value, &nv->guidecolor);
344 for (GSList *l = nv->guides; l != NULL; l = l->next) {
345 g_object_set(G_OBJECT(l->data), "color", nv->guidecolor, NULL);
346 }
347 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
348 break;
349 case SP_ATTR_GUIDEHICOLOR:
350 nv->guidehicolor = (nv->guidehicolor & 0xff) | (DEFAULTGUIDEHICOLOR & 0xffffff00);
351 if (value) {
352 nv->guidehicolor = (nv->guidehicolor & 0xff) | sp_svg_read_color(value, nv->guidehicolor);
353 }
354 for (GSList *l = nv->guides; l != NULL; l = l->next) {
355 g_object_set(G_OBJECT(l->data), "hicolor", nv->guidehicolor, NULL);
356 }
357 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
358 break;
359 case SP_ATTR_GUIDEHIOPACITY:
360 nv->guidehicolor = (nv->guidehicolor & 0xffffff00) | (DEFAULTGUIDEHICOLOR & 0xff);
361 sp_nv_read_opacity(value, &nv->guidehicolor);
362 for (GSList *l = nv->guides; l != NULL; l = l->next) {
363 g_object_set(G_OBJECT(l->data), "hicolor", nv->guidehicolor, NULL);
364 }
365 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
366 break;
367 case SP_ATTR_SHOWBORDER:
368 nv->showborder = (value) ? sp_str_to_bool (value) : TRUE;
369 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
370 break;
371 case SP_ATTR_BORDERLAYER:
372 nv->borderlayer = SP_BORDER_LAYER_BOTTOM;
373 if (value && !strcasecmp(value, "true")) nv->borderlayer = SP_BORDER_LAYER_TOP;
374 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
375 break;
376 case SP_ATTR_BORDERCOLOR:
377 nv->bordercolor = (nv->bordercolor & 0xff) | (DEFAULTBORDERCOLOR & 0xffffff00);
378 if (value) {
379 nv->bordercolor = (nv->bordercolor & 0xff) | sp_svg_read_color (value, nv->bordercolor);
380 }
381 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
382 break;
383 case SP_ATTR_BORDEROPACITY:
384 nv->bordercolor = (nv->bordercolor & 0xffffff00) | (DEFAULTBORDERCOLOR & 0xff);
385 sp_nv_read_opacity(value, &nv->bordercolor);
386 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
387 break;
388 case SP_ATTR_PAGECOLOR:
389 nv->pagecolor = (nv->pagecolor & 0xff) | (DEFAULTPAGECOLOR & 0xffffff00);
390 if (value) {
391 nv->pagecolor = (nv->pagecolor & 0xff) | sp_svg_read_color(value, nv->pagecolor);
392 }
393 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
394 break;
395 case SP_ATTR_INKSCAPE_PAGEOPACITY:
396 nv->pagecolor = (nv->pagecolor & 0xffffff00) | (DEFAULTPAGECOLOR & 0xff);
397 sp_nv_read_opacity(value, &nv->pagecolor);
398 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
399 break;
400 case SP_ATTR_INKSCAPE_PAGESHADOW:
401 nv->pageshadow = value? atoi(value) : 2; // 2 is the default
402 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
403 break;
404 case SP_ATTR_SHOWPAGESHADOW:
405 nv->showpageshadow = (value) ? sp_str_to_bool(value) : TRUE;
406 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
407 break;
408 case SP_ATTR_INKSCAPE_ZOOM:
409 nv->zoom = value ? g_ascii_strtod(value, NULL) : 0; // zero means not set
410 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
411 break;
412 case SP_ATTR_INKSCAPE_CX:
413 nv->cx = value ? g_ascii_strtod(value, NULL) : HUGE_VAL; // HUGE_VAL means not set
414 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
415 break;
416 case SP_ATTR_INKSCAPE_CY:
417 nv->cy = value ? g_ascii_strtod(value, NULL) : HUGE_VAL; // HUGE_VAL means not set
418 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
419 break;
420 case SP_ATTR_INKSCAPE_WINDOW_WIDTH:
421 nv->window_width = value? atoi(value) : -1; // -1 means not set
422 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
423 break;
424 case SP_ATTR_INKSCAPE_WINDOW_HEIGHT:
425 nv->window_height = value ? atoi(value) : -1; // -1 means not set
426 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
427 break;
428 case SP_ATTR_INKSCAPE_WINDOW_X:
429 nv->window_x = value ? atoi(value) : -1; // -1 means not set
430 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
431 break;
432 case SP_ATTR_INKSCAPE_WINDOW_Y:
433 nv->window_y = value ? atoi(value) : -1; // -1 means not set
434 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
435 break;
436 case SP_ATTR_INKSCAPE_GRID_BBOX:
437 nv->snap_manager.grid.setSnapTo(Inkscape::Snapper::BBOX_POINT, value ? sp_str_to_bool(value) : TRUE);
438 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
439 break;
440 case SP_ATTR_INKSCAPE_GRID_POINTS:
441 nv->snap_manager.grid.setSnapTo(Inkscape::Snapper::SNAP_POINT, value ? sp_str_to_bool(value) : FALSE);
442 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
443 break;
444 case SP_ATTR_INKSCAPE_GUIDE_BBOX:
445 nv->snap_manager.guide.setSnapTo(Inkscape::Snapper::BBOX_POINT, value ? sp_str_to_bool(value) : TRUE);
446 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
447 break;
448 case SP_ATTR_INKSCAPE_GUIDE_POINTS:
449 nv->snap_manager.guide.setSnapTo(Inkscape::Snapper::SNAP_POINT, value ? sp_str_to_bool(value) : FALSE);
450 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
451 break;
452 case SP_ATTR_INKSCAPE_OBJECT_BBOX:
453 nv->snap_manager.object.setSnapTo(Inkscape::Snapper::BBOX_POINT, (value) ? sp_str_to_bool(value) : FALSE);
454 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
455 break;
456 case SP_ATTR_INKSCAPE_OBJECT_POINTS:
457 nv->snap_manager.object.setSnapTo(Inkscape::Snapper::SNAP_POINT, (value) ? sp_str_to_bool(value) : FALSE);
458 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
459 break;
460 case SP_ATTR_INKSCAPE_OBJECT_PATHS:
461 nv->snap_manager.object.setSnapToPaths(value ? sp_str_to_bool(value) : TRUE);
462 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
463 break;
464 case SP_ATTR_INKSCAPE_OBJECT_NODES:
465 nv->snap_manager.object.setSnapToNodes(value ? sp_str_to_bool(value) : TRUE);
466 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
467 break;
468 case SP_ATTR_INKSCAPE_CURRENT_LAYER:
469 nv->default_layer_id = value ? g_quark_from_string(value) : 0;
470 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
471 break;
472 case SP_ATTR_INKSCAPE_CONNECTOR_SPACING:
473 nv->connector_spacing = value ? g_ascii_strtod(value, NULL) :
474 defaultConnSpacing;
475 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
476 break;
477 case SP_ATTR_INKSCAPE_DOCUMENT_UNITS: {
478 /* The default unit if the document doesn't override this: e.g. for files saved as
479 * `plain SVG', or non-inkscape files, or files created by an inkscape 0.40 &
480 * earlier.
481 *
482 * Here we choose `px': useful for screen-destined SVGs, and fewer bug reports
483 * about "not the same numbers as what's in the SVG file" (at least for documents
484 * without a viewBox attribute on the root <svg> element). Similarly, it's also
485 * the most reliable unit (i.e. least likely to be wrong in different viewing
486 * conditions) for viewBox-less SVG files given that it's the unit that inkscape
487 * uses for all coordinates.
488 *
489 * For documents that do have a viewBox attribute on the root <svg> element, it
490 * might be better if we used either viewBox coordinates or if we used the unit of
491 * say the width attribute of the root <svg> element. However, these pose problems
492 * in that they aren't in general absolute units as currently required by
493 * doc_units.
494 */
495 SPUnit const *new_unit = &sp_unit_get_by_id(SP_UNIT_PX);
497 if (value) {
498 SPUnit const *const req_unit = sp_unit_get_by_abbreviation(value);
499 if ( req_unit == NULL ) {
500 g_warning("Unrecognized unit `%s'", value);
501 /* fixme: Document errors should be reported in the status bar or
502 * the like (e.g. as per
503 * http://www.w3.org/TR/SVG11/implnote.html#ErrorProcessing); g_log
504 * should be only for programmer errors. */
505 } else if ( req_unit->base == SP_UNIT_ABSOLUTE ||
506 req_unit->base == SP_UNIT_DEVICE ) {
507 new_unit = req_unit;
508 } else {
509 g_warning("Document units must be absolute like `mm', `pt' or `px', but found `%s'",
510 value);
511 /* fixme: Don't use g_log (see above). */
512 }
513 }
514 nv->doc_units = new_unit;
515 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
516 break;
517 }
518 default:
519 if (((SPObjectClass *) (parent_class))->set) {
520 ((SPObjectClass *) (parent_class))->set(object, key, value);
521 }
522 break;
523 }
524 }
526 static void sp_namedview_child_added(SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *ref)
527 {
528 SPNamedView *nv = (SPNamedView *) object;
530 if (((SPObjectClass *) (parent_class))->child_added) {
531 (* ((SPObjectClass *) (parent_class))->child_added)(object, child, ref);
532 }
534 const gchar *id = child->attribute("id");
535 SPObject *no = object->document->getObjectById(id);
536 g_assert(SP_IS_OBJECT(no));
538 if (SP_IS_GUIDE(no)) {
539 SPGuide *g = (SPGuide *) no;
540 nv->guides = g_slist_prepend(nv->guides, g);
541 g_object_set(G_OBJECT(g), "color", nv->guidecolor, "hicolor", nv->guidehicolor, NULL);
542 if (nv->editable) {
543 for (GSList *l = nv->views; l != NULL; l = l->next) {
544 sp_guide_show(g, static_cast<SPDesktop*>(l->data)->guides, (GCallback) sp_dt_guide_event);
545 if (static_cast<SPDesktop*>(l->data)->guides_active)
546 sp_guide_sensitize(g,
547 sp_desktop_canvas(static_cast<SPDesktop*> (l->data)),
548 TRUE);
549 if (nv->showguides) {
550 for (GSList *v = SP_GUIDE(g)->views; v != NULL; v = v->next) {
551 sp_canvas_item_show(SP_CANVAS_ITEM(v->data));
552 }
553 } else {
554 for (GSList *v = SP_GUIDE(g)->views; v != NULL; v = v->next) {
555 sp_canvas_item_hide(SP_CANVAS_ITEM(v->data));
556 }
557 }
558 }
559 }
560 }
561 }
563 static void sp_namedview_remove_child(SPObject *object, Inkscape::XML::Node *child)
564 {
565 SPNamedView *nv = (SPNamedView *) object;
567 GSList **ref = &nv->guides;
568 for ( GSList *iter = nv->guides ; iter ; iter = iter->next ) {
569 if ( SP_OBJECT_REPR((SPObject *)iter->data) == child ) {
570 *ref = iter->next;
571 iter->next = NULL;
572 g_slist_free_1(iter);
573 break;
574 }
575 ref = &iter->next;
576 }
578 if (((SPObjectClass *) (parent_class))->remove_child) {
579 (* ((SPObjectClass *) (parent_class))->remove_child)(object, child);
580 }
581 }
583 static Inkscape::XML::Node *sp_namedview_write(SPObject *object, Inkscape::XML::Node *repr, guint flags)
584 {
585 if ( ( flags & SP_OBJECT_WRITE_EXT ) &&
586 repr != SP_OBJECT_REPR(object) )
587 {
588 if (repr) {
589 repr->mergeFrom(SP_OBJECT_REPR(object), "id");
590 } else {
591 repr = SP_OBJECT_REPR(object)->duplicate();
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 SPCanvasItem *item = sp_canvas_item_new(sp_desktop_grid(desktop), SP_TYPE_CGRID, NULL);
619 // since we're keeping a copy, we need to bump up the ref count
620 gtk_object_ref(GTK_OBJECT(item));
621 gridviews = g_slist_prepend(gridviews, item);
622 sp_namedview_setup_grid_item(this, item);
623 }
625 /*
626 * Restores window geometry from the document settings
627 */
628 void sp_namedview_window_from_document(SPDesktop *desktop)
629 {
630 SPNamedView *nv = desktop->namedview;
631 gint save_geometry = prefs_get_int_attribute("options.savewindowgeometry", "value", 0);
633 // restore window size and position
634 if (save_geometry) {
635 if (nv->window_width != -1 && nv->window_height != -1)
636 desktop->setWindowSize(nv->window_width, nv->window_height);
637 if (nv->window_x != -1 && nv->window_y != -1)
638 desktop->setWindowPosition(NR::Point(nv->window_x, nv->window_y));
639 }
641 // restore zoom and view
642 if (nv->zoom != 0 && nv->zoom != HUGE_VAL && !isNaN(nv->zoom)
643 && nv->cx != HUGE_VAL && !isNaN(nv->cx)
644 && nv->cy != HUGE_VAL && !isNaN(nv->cy)) {
645 desktop->zoom_absolute(nv->cx, nv->cy, nv->zoom);
646 } else if (sp_desktop_document(desktop)) { // document without saved zoom, zoom to its page
647 desktop->zoom_page();
648 }
650 // cancel any history of zooms up to this point
651 if (desktop->zooms_past) {
652 g_list_free(desktop->zooms_past);
653 desktop->zooms_past = NULL;
654 }
656 SPObject *layer = NULL;
657 SPDocument *document = desktop->doc();
658 if ( nv->default_layer_id != 0 ) {
659 layer = document->getObjectById(g_quark_to_string(nv->default_layer_id));
660 }
661 // don't use that object if it's not at least group
662 if ( !layer || !SP_IS_GROUP(layer) ) {
663 layer = NULL;
664 }
665 // if that didn't work out, look for the topmost layer
666 if (!layer) {
667 SPObject *iter = sp_object_first_child(SP_DOCUMENT_ROOT(document));
668 for ( ; iter ; iter = SP_OBJECT_NEXT(iter) ) {
669 if (desktop->isLayer(iter)) {
670 layer = iter;
671 }
672 }
673 }
674 if (layer) {
675 desktop->setCurrentLayer(layer);
676 }
677 }
679 void sp_namedview_document_from_window(SPDesktop *desktop)
680 {
681 gint save_geometry = prefs_get_int_attribute("options.savewindowgeometry", "value", 0);
682 Inkscape::XML::Node *view = SP_OBJECT_REPR(desktop->namedview);
683 NR::Rect const r = desktop->get_display_area();
685 // saving window geometry is not undoable
686 gboolean saved = sp_document_get_undo_sensitive(sp_desktop_document(desktop));
687 sp_document_set_undo_sensitive(sp_desktop_document(desktop), FALSE);
689 sp_repr_set_svg_double(view, "inkscape:zoom", desktop->current_zoom());
690 sp_repr_set_svg_double(view, "inkscape:cx", r.midpoint()[NR::X]);
691 sp_repr_set_svg_double(view, "inkscape:cy", r.midpoint()[NR::Y]);
693 if (save_geometry) {
694 gint w, h, x, y;
695 desktop->getWindowGeometry(x, y, w, h);
696 sp_repr_set_int(view, "inkscape:window-width", w);
697 sp_repr_set_int(view, "inkscape:window-height", h);
698 sp_repr_set_int(view, "inkscape:window-x", x);
699 sp_repr_set_int(view, "inkscape:window-y", y);
700 }
702 view->setAttribute("inkscape:current-layer", SP_OBJECT_ID(desktop->currentLayer()));
704 // restore undoability
705 sp_document_set_undo_sensitive(sp_desktop_document(desktop), saved);
706 }
708 void SPNamedView::hide(SPDesktop const *desktop)
709 {
710 g_assert(desktop != NULL);
711 g_assert(g_slist_find(views, desktop));
713 for (GSList *l = guides; l != NULL; l = l->next) {
714 sp_guide_hide(SP_GUIDE(l->data), sp_desktop_canvas(desktop));
715 }
717 views = g_slist_remove(views, desktop);
719 GSList *l;
720 for (l = gridviews; l != NULL; l = l->next) {
721 if (SP_CANVAS_ITEM(l->data)->canvas == sp_desktop_canvas(desktop)) {
722 break;
723 }
724 }
726 g_assert(l);
728 sp_canvas_item_hide(SP_CANVAS_ITEM(l->data));
729 gtk_object_unref(GTK_OBJECT(l->data));
730 gridviews = g_slist_remove(gridviews, l->data);
731 }
733 void SPNamedView::activateGuides(gpointer desktop, gboolean active)
734 {
735 g_assert(desktop != NULL);
736 g_assert(g_slist_find(views, desktop));
738 SPDesktop *dt = static_cast<SPDesktop*>(desktop);
740 for (GSList *l = guides; l != NULL; l = l->next) {
741 sp_guide_sensitize(SP_GUIDE(l->data), sp_desktop_canvas(dt), active);
742 }
743 }
745 static void sp_namedview_setup_guides(SPNamedView *nv)
746 {
747 for (GSList *l = nv->guides; l != NULL; l = l->next) {
748 if (nv->showguides) {
749 for (GSList *v = SP_GUIDE(l->data)->views; v != NULL; v = v->next) {
750 sp_canvas_item_show(SP_CANVAS_ITEM(v->data));
751 }
752 } else {
753 for (GSList *v = SP_GUIDE(l->data)->views; v != NULL; v = v->next) {
754 sp_canvas_item_hide(SP_CANVAS_ITEM(v->data));
755 }
756 }
757 }
758 }
760 void sp_namedview_toggle_guides(SPDocument *doc, Inkscape::XML::Node *repr)
761 {
762 unsigned int v;
763 unsigned int set = sp_repr_get_boolean(repr, "showguides", &v);
764 if (!set) { // hide guides if not specified, for backwards compatibility
765 v = FALSE;
766 } else {
767 v = !v;
768 }
770 gboolean saved = sp_document_get_undo_sensitive(doc);
771 sp_document_set_undo_sensitive(doc, FALSE);
773 sp_repr_set_boolean(repr, "showguides", v);
775 doc->rroot->setAttribute("sodipodi:modified", "true");
776 sp_document_set_undo_sensitive(doc, saved);
777 }
779 void sp_namedview_toggle_grid(SPDocument *doc, Inkscape::XML::Node *repr)
780 {
781 unsigned int v;
782 sp_repr_get_boolean(repr, "showgrid", &v);
783 v = !v;
785 gboolean saved = sp_document_get_undo_sensitive(doc);
786 sp_document_set_undo_sensitive(doc, FALSE);
788 sp_repr_set_boolean(repr, "showgrid", v);
790 doc->rroot->setAttribute("sodipodi:modified", "true");
791 sp_document_set_undo_sensitive(doc, saved);
792 }
794 static void sp_namedview_setup_grid(SPNamedView *nv)
795 {
796 for (GSList *l = nv->gridviews; l != NULL; l = l->next) {
797 sp_namedview_setup_grid_item(nv, SP_CANVAS_ITEM(l->data));
798 }
799 }
801 static void sp_namedview_setup_grid_item(SPNamedView *nv, SPCanvasItem *item)
802 {
803 if (nv->showgrid) {
804 sp_canvas_item_show(item);
805 } else {
806 sp_canvas_item_hide(item);
807 }
809 sp_canvas_item_set((GtkObject *) item,
810 "color", nv->gridcolor,
811 "originx", nv->gridorigin[NR::X],
812 "originy", nv->gridorigin[NR::Y],
813 "spacingx", nv->gridspacing[NR::X],
814 "spacingy", nv->gridspacing[NR::Y],
815 "empcolor", nv->gridempcolor,
816 "empspacing", nv->gridempspacing,
817 NULL);
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 = 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 Local Variables:
955 mode:c++
956 c-file-style:"stroustrup"
957 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
958 indent-tabs-mode:nil
959 fill-column:99
960 End:
961 */
962 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :