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 "event-log.h"
27 #include "sp-guide.h"
28 #include "sp-item-group.h"
29 #include "sp-namedview.h"
30 #include "prefs-utils.h"
31 #include "desktop.h"
32 #include "conn-avoid-ref.h" // for defaultConnSpacing.
34 #include "isnan.h" //temp fix for isnan(). include last
36 #define DEFAULTTOLERANCE 0.4
37 #define DEFAULTGRIDCOLOR 0x3f3fff25
38 #define DEFAULTGRIDEMPCOLOR 0x3f3fff60
39 #define DEFAULTGRIDEMPSPACING 5
40 #define DEFAULTGUIDECOLOR 0x0000ff7f
41 #define DEFAULTGUIDEHICOLOR 0xff00007f
42 #define DEFAULTBORDERCOLOR 0x000000ff
43 #define DEFAULTPAGECOLOR 0xffffff00
45 static void sp_namedview_class_init(SPNamedViewClass *klass);
46 static void sp_namedview_init(SPNamedView *namedview);
48 static void sp_namedview_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
49 static void sp_namedview_release(SPObject *object);
50 static void sp_namedview_set(SPObject *object, unsigned int key, const gchar *value);
51 static void sp_namedview_child_added(SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *ref);
52 static void sp_namedview_remove_child(SPObject *object, Inkscape::XML::Node *child);
53 static Inkscape::XML::Node *sp_namedview_write(SPObject *object, Inkscape::XML::Node *repr, guint flags);
55 static void sp_namedview_setup_guides(SPNamedView * nv);
57 static void sp_namedview_setup_grid(SPNamedView * nv);
58 static void sp_namedview_setup_grid_item(SPNamedView * nv, SPCanvasItem * item);
60 static gboolean sp_str_to_bool(const gchar *str);
61 static gboolean sp_nv_read_length(const gchar *str, guint base, gdouble *val, const SPUnit **unit);
62 static gboolean sp_nv_read_opacity(const gchar *str, guint32 *color);
64 static SPObjectGroupClass * parent_class;
66 GType
67 sp_namedview_get_type()
68 {
69 static GType namedview_type = 0;
70 if (!namedview_type) {
71 GTypeInfo namedview_info = {
72 sizeof(SPNamedViewClass),
73 NULL, /* base_init */
74 NULL, /* base_finalize */
75 (GClassInitFunc) sp_namedview_class_init,
76 NULL, /* class_finalize */
77 NULL, /* class_data */
78 sizeof(SPNamedView),
79 16, /* n_preallocs */
80 (GInstanceInitFunc) sp_namedview_init,
81 NULL, /* value_table */
82 };
83 namedview_type = g_type_register_static(SP_TYPE_OBJECTGROUP, "SPNamedView", &namedview_info, (GTypeFlags)0);
84 }
85 return namedview_type;
86 }
88 static void sp_namedview_class_init(SPNamedViewClass * klass)
89 {
90 GObjectClass * gobject_class;
91 SPObjectClass * sp_object_class;
93 gobject_class = (GObjectClass *) klass;
94 sp_object_class = (SPObjectClass *) klass;
96 parent_class = (SPObjectGroupClass*) g_type_class_ref(SP_TYPE_OBJECTGROUP);
98 sp_object_class->build = sp_namedview_build;
99 sp_object_class->release = sp_namedview_release;
100 sp_object_class->set = sp_namedview_set;
101 sp_object_class->child_added = sp_namedview_child_added;
102 sp_object_class->remove_child = sp_namedview_remove_child;
103 sp_object_class->write = sp_namedview_write;
104 }
106 static void sp_namedview_init(SPNamedView *nv)
107 {
108 nv->editable = TRUE;
109 nv->showgrid = FALSE;
110 nv->showguides = TRUE;
111 nv->showborder = TRUE;
112 nv->showpageshadow = TRUE;
114 nv->guides = NULL;
115 nv->viewcount = 0;
117 nv->default_layer_id = 0;
119 nv->connector_spacing = defaultConnSpacing;
121 new (&nv->snap_manager) SnapManager(nv);
122 }
124 static void sp_namedview_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)
125 {
126 SPNamedView *nv = (SPNamedView *) object;
127 SPObjectGroup *og = (SPObjectGroup *) object;
129 if (((SPObjectClass *) (parent_class))->build) {
130 (* ((SPObjectClass *) (parent_class))->build)(object, document, repr);
131 }
133 sp_object_read_attr(object, "inkscape:document-units");
134 sp_object_read_attr(object, "viewonly");
135 sp_object_read_attr(object, "showgrid");
136 sp_object_read_attr(object, "showguides");
137 sp_object_read_attr(object, "gridtolerance");
138 sp_object_read_attr(object, "guidetolerance");
139 sp_object_read_attr(object, "objecttolerance");
140 sp_object_read_attr(object, "inkscape:has_abs_tolerance");
141 sp_object_read_attr(object, "gridoriginx");
142 sp_object_read_attr(object, "gridoriginy");
143 sp_object_read_attr(object, "gridspacingx");
144 sp_object_read_attr(object, "gridspacingy");
145 sp_object_read_attr(object, "gridempspacing");
146 sp_object_read_attr(object, "gridcolor");
147 sp_object_read_attr(object, "gridempcolor");
148 sp_object_read_attr(object, "gridopacity");
149 sp_object_read_attr(object, "gridempopacity");
150 sp_object_read_attr(object, "guidecolor");
151 sp_object_read_attr(object, "guideopacity");
152 sp_object_read_attr(object, "guidehicolor");
153 sp_object_read_attr(object, "guidehiopacity");
154 sp_object_read_attr(object, "showborder");
155 sp_object_read_attr(object, "inkscape:showpageshadow");
156 sp_object_read_attr(object, "borderlayer");
157 sp_object_read_attr(object, "bordercolor");
158 sp_object_read_attr(object, "borderopacity");
159 sp_object_read_attr(object, "pagecolor");
160 sp_object_read_attr(object, "inkscape:pageopacity");
161 sp_object_read_attr(object, "inkscape:pageshadow");
162 sp_object_read_attr(object, "inkscape:zoom");
163 sp_object_read_attr(object, "inkscape:cx");
164 sp_object_read_attr(object, "inkscape:cy");
165 sp_object_read_attr(object, "inkscape:window-width");
166 sp_object_read_attr(object, "inkscape:window-height");
167 sp_object_read_attr(object, "inkscape:window-x");
168 sp_object_read_attr(object, "inkscape:window-y");
169 sp_object_read_attr(object, "inkscape:grid-bbox");
170 sp_object_read_attr(object, "inkscape:guide-bbox");
171 sp_object_read_attr(object, "inkscape:object-bbox");
172 sp_object_read_attr(object, "inkscape:grid-points");
173 sp_object_read_attr(object, "inkscape:guide-points");
174 sp_object_read_attr(object, "inkscape:object-points");
175 sp_object_read_attr(object, "inkscape:object-paths");
176 sp_object_read_attr(object, "inkscape:object-nodes");
177 sp_object_read_attr(object, "inkscape:current-layer");
178 sp_object_read_attr(object, "inkscape:connector-spacing");
180 /* Construct guideline list */
182 for (SPObject *o = sp_object_first_child(SP_OBJECT(og)) ; o != NULL; o = SP_OBJECT_NEXT(o) ) {
183 if (SP_IS_GUIDE(o)) {
184 SPGuide * g = SP_GUIDE(o);
185 nv->guides = g_slist_prepend(nv->guides, g);
186 g_object_set(G_OBJECT(g), "color", nv->guidecolor, "hicolor", nv->guidehicolor, NULL);
187 }
188 }
189 }
191 static void sp_namedview_release(SPObject *object)
192 {
193 SPNamedView *namedview = (SPNamedView *) object;
195 if (namedview->guides) {
196 g_slist_free(namedview->guides);
197 namedview->guides = NULL;
198 }
200 while (namedview->gridviews) {
201 gtk_object_unref(GTK_OBJECT(namedview->gridviews->data));
202 namedview->gridviews = g_slist_remove(namedview->gridviews, namedview->gridviews->data);
203 }
205 if (((SPObjectClass *) parent_class)->release) {
206 ((SPObjectClass *) parent_class)->release(object);
207 }
209 namedview->snap_manager.~SnapManager();
210 }
212 static void sp_namedview_set(SPObject *object, unsigned int key, const gchar *value)
213 {
214 SPNamedView *nv = SP_NAMEDVIEW(object);
215 SPUnit const &px = sp_unit_get_by_id(SP_UNIT_PX);
217 switch (key) {
218 case SP_ATTR_VIEWONLY:
219 nv->editable = (!value);
220 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
221 break;
222 case SP_ATTR_SHOWGRID:
223 nv->showgrid = sp_str_to_bool(value);
224 sp_namedview_setup_grid(nv);
225 /* Disable grid snaps if the grid is turned off */
226 nv->snap_manager.grid.setEnabled(nv->showgrid);
227 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
228 break;
229 case SP_ATTR_SHOWGUIDES:
230 if (!value) { // show guides if not specified, for backwards compatibility
231 nv->showguides = TRUE;
232 } else {
233 nv->showguides = sp_str_to_bool(value);
234 }
235 sp_namedview_setup_guides(nv);
236 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
237 break;
238 case SP_ATTR_GRIDTOLERANCE:
239 nv->gridtoleranceunit = &px;
240 nv->gridtolerance = DEFAULTTOLERANCE;
241 if (value) {
242 sp_nv_read_length(value, SP_UNIT_ABSOLUTE | SP_UNIT_DEVICE, &nv->gridtolerance, &nv->gridtoleranceunit);
243 }
244 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
245 break;
246 case SP_ATTR_GUIDETOLERANCE:
247 nv->guidetoleranceunit = &px;
248 nv->guidetolerance = DEFAULTTOLERANCE;
249 if (value) {
250 sp_nv_read_length(value, SP_UNIT_ABSOLUTE | SP_UNIT_DEVICE, &nv->guidetolerance, &nv->guidetoleranceunit);
251 }
252 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
253 break;
254 case SP_ATTR_OBJECTTOLERANCE:
255 nv->objecttoleranceunit = &px;
256 nv->objecttolerance = DEFAULTTOLERANCE;
257 if (value) {
258 sp_nv_read_length(value, SP_UNIT_ABSOLUTE | SP_UNIT_DEVICE, &nv->objecttolerance, &nv->objecttoleranceunit);
259 }
260 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
261 break;
262 case SP_ATTR_ABS_TOLERANCE:
263 if (!value)
264 nv->has_abs_tolerance = true;
265 else
266 nv->has_abs_tolerance = (sp_str_to_bool (value) == TRUE);
267 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
268 break;
269 case SP_ATTR_GRIDORIGINX:
270 case SP_ATTR_GRIDORIGINY:
271 {
272 unsigned const d = (key == SP_ATTR_GRIDORIGINY);
273 nv->gridunit = nv->doc_units;
274 nv->gridorigin[d] = 0.0;
275 if (value) {
276 sp_nv_read_length(value, SP_UNIT_ABSOLUTE | SP_UNIT_DEVICE, &nv->gridorigin[d], &nv->gridunit);
277 }
278 nv->gridorigin[d] = sp_units_get_pixels(nv->gridorigin[d], *(nv->gridunit));
279 sp_namedview_setup_grid(nv);
280 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
281 break;
282 }
283 case SP_ATTR_GRIDSPACINGX:
284 case SP_ATTR_GRIDSPACINGY:
285 {
286 unsigned const d = (key == SP_ATTR_GRIDSPACINGY);
287 nv->gridunit = nv->doc_units;
288 nv->gridspacing[d] = 1.0;
289 if (value) {
290 sp_nv_read_length(value, SP_UNIT_ABSOLUTE | SP_UNIT_DEVICE, &nv->gridspacing[d], &nv->gridunit);
291 }
292 nv->gridspacing[d] = sp_units_get_pixels(nv->gridspacing[d], *(nv->gridunit));
293 sp_namedview_setup_grid(nv);
294 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
295 break;
296 }
297 case SP_ATTR_GRIDCOLOR:
298 nv->gridcolor = (nv->gridcolor & 0xff) | (DEFAULTGRIDCOLOR & 0xffffff00);
299 if (value) {
300 nv->gridcolor = (nv->gridcolor & 0xff) | sp_svg_read_color(value, nv->gridcolor);
301 }
302 sp_namedview_setup_grid(nv);
303 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
304 break;
305 case SP_ATTR_GRIDEMPCOLOR:
306 nv->gridempcolor = (nv->gridempcolor & 0xff) | (DEFAULTGRIDEMPCOLOR & 0xffffff00);
307 if (value) {
308 nv->gridempcolor = (nv->gridempcolor & 0xff) | sp_svg_read_color(value, nv->gridempcolor);
309 }
310 sp_namedview_setup_grid(nv);
311 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
312 break;
313 case SP_ATTR_GRIDOPACITY:
314 nv->gridcolor = (nv->gridcolor & 0xffffff00) | (DEFAULTGRIDCOLOR & 0xff);
315 sp_nv_read_opacity(value, &nv->gridcolor);
316 sp_namedview_setup_grid(nv);
317 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
318 break;
319 case SP_ATTR_GRIDEMPOPACITY:
320 nv->gridempcolor = (nv->gridempcolor & 0xffffff00) | (DEFAULTGRIDEMPCOLOR & 0xff);
321 sp_nv_read_opacity(value, &nv->gridempcolor);
322 sp_namedview_setup_grid(nv);
323 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
324 break;
325 case SP_ATTR_GRIDEMPSPACING:
326 nv->gridempspacing = DEFAULTGRIDEMPSPACING;
327 if (value != NULL)
328 nv->gridempspacing = atoi(value);
329 sp_namedview_setup_grid(nv);
330 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
331 break;
332 case SP_ATTR_GUIDECOLOR:
333 nv->guidecolor = (nv->guidecolor & 0xff) | (DEFAULTGUIDECOLOR & 0xffffff00);
334 if (value) {
335 nv->guidecolor = (nv->guidecolor & 0xff) | sp_svg_read_color(value, nv->guidecolor);
336 }
337 for (GSList *l = nv->guides; l != NULL; l = l->next) {
338 g_object_set(G_OBJECT(l->data), "color", nv->guidecolor, NULL);
339 }
340 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
341 break;
342 case SP_ATTR_GUIDEOPACITY:
343 nv->guidecolor = (nv->guidecolor & 0xffffff00) | (DEFAULTGUIDECOLOR & 0xff);
344 sp_nv_read_opacity(value, &nv->guidecolor);
345 for (GSList *l = nv->guides; l != NULL; l = l->next) {
346 g_object_set(G_OBJECT(l->data), "color", nv->guidecolor, NULL);
347 }
348 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
349 break;
350 case SP_ATTR_GUIDEHICOLOR:
351 nv->guidehicolor = (nv->guidehicolor & 0xff) | (DEFAULTGUIDEHICOLOR & 0xffffff00);
352 if (value) {
353 nv->guidehicolor = (nv->guidehicolor & 0xff) | sp_svg_read_color(value, nv->guidehicolor);
354 }
355 for (GSList *l = nv->guides; l != NULL; l = l->next) {
356 g_object_set(G_OBJECT(l->data), "hicolor", nv->guidehicolor, NULL);
357 }
358 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
359 break;
360 case SP_ATTR_GUIDEHIOPACITY:
361 nv->guidehicolor = (nv->guidehicolor & 0xffffff00) | (DEFAULTGUIDEHICOLOR & 0xff);
362 sp_nv_read_opacity(value, &nv->guidehicolor);
363 for (GSList *l = nv->guides; l != NULL; l = l->next) {
364 g_object_set(G_OBJECT(l->data), "hicolor", nv->guidehicolor, NULL);
365 }
366 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
367 break;
368 case SP_ATTR_SHOWBORDER:
369 nv->showborder = (value) ? sp_str_to_bool (value) : TRUE;
370 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
371 break;
372 case SP_ATTR_BORDERLAYER:
373 nv->borderlayer = SP_BORDER_LAYER_BOTTOM;
374 if (value && !strcasecmp(value, "true")) nv->borderlayer = SP_BORDER_LAYER_TOP;
375 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
376 break;
377 case SP_ATTR_BORDERCOLOR:
378 nv->bordercolor = (nv->bordercolor & 0xff) | (DEFAULTBORDERCOLOR & 0xffffff00);
379 if (value) {
380 nv->bordercolor = (nv->bordercolor & 0xff) | sp_svg_read_color (value, nv->bordercolor);
381 }
382 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
383 break;
384 case SP_ATTR_BORDEROPACITY:
385 nv->bordercolor = (nv->bordercolor & 0xffffff00) | (DEFAULTBORDERCOLOR & 0xff);
386 sp_nv_read_opacity(value, &nv->bordercolor);
387 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
388 break;
389 case SP_ATTR_PAGECOLOR:
390 nv->pagecolor = (nv->pagecolor & 0xff) | (DEFAULTPAGECOLOR & 0xffffff00);
391 if (value) {
392 nv->pagecolor = (nv->pagecolor & 0xff) | sp_svg_read_color(value, nv->pagecolor);
393 }
394 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
395 break;
396 case SP_ATTR_INKSCAPE_PAGEOPACITY:
397 nv->pagecolor = (nv->pagecolor & 0xffffff00) | (DEFAULTPAGECOLOR & 0xff);
398 sp_nv_read_opacity(value, &nv->pagecolor);
399 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
400 break;
401 case SP_ATTR_INKSCAPE_PAGESHADOW:
402 nv->pageshadow = value? atoi(value) : 2; // 2 is the default
403 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
404 break;
405 case SP_ATTR_SHOWPAGESHADOW:
406 nv->showpageshadow = (value) ? sp_str_to_bool(value) : TRUE;
407 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
408 break;
409 case SP_ATTR_INKSCAPE_ZOOM:
410 nv->zoom = value ? g_ascii_strtod(value, NULL) : 0; // zero means not set
411 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
412 break;
413 case SP_ATTR_INKSCAPE_CX:
414 nv->cx = value ? g_ascii_strtod(value, NULL) : HUGE_VAL; // HUGE_VAL means not set
415 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
416 break;
417 case SP_ATTR_INKSCAPE_CY:
418 nv->cy = value ? g_ascii_strtod(value, NULL) : HUGE_VAL; // HUGE_VAL means not set
419 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
420 break;
421 case SP_ATTR_INKSCAPE_WINDOW_WIDTH:
422 nv->window_width = value? atoi(value) : -1; // -1 means not set
423 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
424 break;
425 case SP_ATTR_INKSCAPE_WINDOW_HEIGHT:
426 nv->window_height = value ? atoi(value) : -1; // -1 means not set
427 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
428 break;
429 case SP_ATTR_INKSCAPE_WINDOW_X:
430 nv->window_x = value ? atoi(value) : -1; // -1 means not set
431 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
432 break;
433 case SP_ATTR_INKSCAPE_WINDOW_Y:
434 nv->window_y = value ? atoi(value) : -1; // -1 means not set
435 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
436 break;
437 case SP_ATTR_INKSCAPE_GRID_BBOX:
438 nv->snap_manager.grid.setSnapTo(Inkscape::Snapper::BBOX_POINT, value ? sp_str_to_bool(value) : TRUE);
439 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
440 break;
441 case SP_ATTR_INKSCAPE_GRID_POINTS:
442 nv->snap_manager.grid.setSnapTo(Inkscape::Snapper::SNAP_POINT, value ? sp_str_to_bool(value) : FALSE);
443 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
444 break;
445 case SP_ATTR_INKSCAPE_GUIDE_BBOX:
446 nv->snap_manager.guide.setSnapTo(Inkscape::Snapper::BBOX_POINT, value ? sp_str_to_bool(value) : TRUE);
447 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
448 break;
449 case SP_ATTR_INKSCAPE_GUIDE_POINTS:
450 nv->snap_manager.guide.setSnapTo(Inkscape::Snapper::SNAP_POINT, value ? sp_str_to_bool(value) : FALSE);
451 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
452 break;
453 case SP_ATTR_INKSCAPE_OBJECT_BBOX:
454 nv->snap_manager.object.setSnapTo(Inkscape::Snapper::BBOX_POINT, (value) ? sp_str_to_bool(value) : FALSE);
455 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
456 break;
457 case SP_ATTR_INKSCAPE_OBJECT_POINTS:
458 nv->snap_manager.object.setSnapTo(Inkscape::Snapper::SNAP_POINT, (value) ? sp_str_to_bool(value) : FALSE);
459 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
460 break;
461 case SP_ATTR_INKSCAPE_OBJECT_PATHS:
462 nv->snap_manager.object.setSnapToPaths(value ? sp_str_to_bool(value) : TRUE);
463 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
464 break;
465 case SP_ATTR_INKSCAPE_OBJECT_NODES:
466 nv->snap_manager.object.setSnapToNodes(value ? sp_str_to_bool(value) : TRUE);
467 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
468 break;
469 case SP_ATTR_INKSCAPE_CURRENT_LAYER:
470 nv->default_layer_id = value ? g_quark_from_string(value) : 0;
471 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
472 break;
473 case SP_ATTR_INKSCAPE_CONNECTOR_SPACING:
474 nv->connector_spacing = value ? g_ascii_strtod(value, NULL) :
475 defaultConnSpacing;
476 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
477 break;
478 case SP_ATTR_INKSCAPE_DOCUMENT_UNITS: {
479 /* The default unit if the document doesn't override this: e.g. for files saved as
480 * `plain SVG', or non-inkscape files, or files created by an inkscape 0.40 &
481 * earlier.
482 *
483 * Here we choose `px': useful for screen-destined SVGs, and fewer bug reports
484 * about "not the same numbers as what's in the SVG file" (at least for documents
485 * without a viewBox attribute on the root <svg> element). Similarly, it's also
486 * the most reliable unit (i.e. least likely to be wrong in different viewing
487 * conditions) for viewBox-less SVG files given that it's the unit that inkscape
488 * uses for all coordinates.
489 *
490 * For documents that do have a viewBox attribute on the root <svg> element, it
491 * might be better if we used either viewBox coordinates or if we used the unit of
492 * say the width attribute of the root <svg> element. However, these pose problems
493 * in that they aren't in general absolute units as currently required by
494 * doc_units.
495 */
496 SPUnit const *new_unit = &sp_unit_get_by_id(SP_UNIT_PX);
498 if (value) {
499 SPUnit const *const req_unit = sp_unit_get_by_abbreviation(value);
500 if ( req_unit == NULL ) {
501 g_warning("Unrecognized unit `%s'", value);
502 /* fixme: Document errors should be reported in the status bar or
503 * the like (e.g. as per
504 * http://www.w3.org/TR/SVG11/implnote.html#ErrorProcessing); g_log
505 * should be only for programmer errors. */
506 } else if ( req_unit->base == SP_UNIT_ABSOLUTE ||
507 req_unit->base == SP_UNIT_DEVICE ) {
508 new_unit = req_unit;
509 } else {
510 g_warning("Document units must be absolute like `mm', `pt' or `px', but found `%s'",
511 value);
512 /* fixme: Don't use g_log (see above). */
513 }
514 }
515 nv->doc_units = new_unit;
516 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
517 break;
518 }
519 default:
520 if (((SPObjectClass *) (parent_class))->set) {
521 ((SPObjectClass *) (parent_class))->set(object, key, value);
522 }
523 break;
524 }
525 }
527 static void sp_namedview_child_added(SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *ref)
528 {
529 SPNamedView *nv = (SPNamedView *) object;
531 if (((SPObjectClass *) (parent_class))->child_added) {
532 (* ((SPObjectClass *) (parent_class))->child_added)(object, child, ref);
533 }
535 const gchar *id = child->attribute("id");
536 SPObject *no = object->document->getObjectById(id);
537 g_assert(SP_IS_OBJECT(no));
539 if (SP_IS_GUIDE(no)) {
540 SPGuide *g = (SPGuide *) no;
541 nv->guides = g_slist_prepend(nv->guides, g);
542 g_object_set(G_OBJECT(g), "color", nv->guidecolor, "hicolor", nv->guidehicolor, NULL);
543 if (nv->editable) {
544 for (GSList *l = nv->views; l != NULL; l = l->next) {
545 sp_guide_show(g, static_cast<SPDesktop*>(l->data)->guides, (GCallback) sp_dt_guide_event);
546 if (static_cast<SPDesktop*>(l->data)->guides_active)
547 sp_guide_sensitize(g,
548 sp_desktop_canvas(static_cast<SPDesktop*> (l->data)),
549 TRUE);
550 if (nv->showguides) {
551 for (GSList *v = SP_GUIDE(g)->views; v != NULL; v = v->next) {
552 sp_canvas_item_show(SP_CANVAS_ITEM(v->data));
553 }
554 } else {
555 for (GSList *v = SP_GUIDE(g)->views; v != NULL; v = v->next) {
556 sp_canvas_item_hide(SP_CANVAS_ITEM(v->data));
557 }
558 }
559 }
560 }
561 }
562 }
564 static void sp_namedview_remove_child(SPObject *object, Inkscape::XML::Node *child)
565 {
566 SPNamedView *nv = (SPNamedView *) object;
568 GSList **ref = &nv->guides;
569 for ( GSList *iter = nv->guides ; iter ; iter = iter->next ) {
570 if ( SP_OBJECT_REPR((SPObject *)iter->data) == child ) {
571 *ref = iter->next;
572 iter->next = NULL;
573 g_slist_free_1(iter);
574 break;
575 }
576 ref = &iter->next;
577 }
579 if (((SPObjectClass *) (parent_class))->remove_child) {
580 (* ((SPObjectClass *) (parent_class))->remove_child)(object, child);
581 }
582 }
584 static Inkscape::XML::Node *sp_namedview_write(SPObject *object, Inkscape::XML::Node *repr, guint flags)
585 {
586 if ( ( flags & SP_OBJECT_WRITE_EXT ) &&
587 repr != SP_OBJECT_REPR(object) )
588 {
589 if (repr) {
590 repr->mergeFrom(SP_OBJECT_REPR(object), "id");
591 } else {
592 repr = SP_OBJECT_REPR(object)->duplicate();
593 }
594 }
596 return repr;
597 }
599 void SPNamedView::show(SPDesktop *desktop)
600 {
601 for (GSList *l = guides; l != NULL; l = l->next) {
602 sp_guide_show(SP_GUIDE(l->data), desktop->guides, (GCallback) sp_dt_guide_event);
603 if (desktop->guides_active) {
604 sp_guide_sensitize(SP_GUIDE(l->data), sp_desktop_canvas(desktop), TRUE);
605 }
606 if (showguides) {
607 for (GSList *v = SP_GUIDE(l->data)->views; v != NULL; v = v->next) {
608 sp_canvas_item_show(SP_CANVAS_ITEM(v->data));
609 }
610 } else {
611 for (GSList *v = SP_GUIDE(l->data)->views; v != NULL; v = v->next) {
612 sp_canvas_item_hide(SP_CANVAS_ITEM(v->data));
613 }
614 }
615 }
617 views = g_slist_prepend(views, desktop);
619 SPCanvasItem *item = sp_canvas_item_new(sp_desktop_grid(desktop), SP_TYPE_CGRID, NULL);
620 // since we're keeping a copy, we need to bump up the ref count
621 gtk_object_ref(GTK_OBJECT(item));
622 gridviews = g_slist_prepend(gridviews, item);
623 sp_namedview_setup_grid_item(this, item);
624 }
626 /*
627 * Restores window geometry from the document settings
628 */
629 void sp_namedview_window_from_document(SPDesktop *desktop)
630 {
631 SPNamedView *nv = desktop->namedview;
632 gint save_geometry = prefs_get_int_attribute("options.savewindowgeometry", "value", 0);
634 // restore window size and position
635 if (save_geometry) {
636 if (nv->window_width != -1 && nv->window_height != -1)
637 desktop->setWindowSize(nv->window_width, nv->window_height);
638 if (nv->window_x != -1 && nv->window_y != -1)
639 desktop->setWindowPosition(NR::Point(nv->window_x, nv->window_y));
640 }
642 // restore zoom and view
643 if (nv->zoom != 0 && nv->zoom != HUGE_VAL && !isNaN(nv->zoom)
644 && nv->cx != HUGE_VAL && !isNaN(nv->cx)
645 && nv->cy != HUGE_VAL && !isNaN(nv->cy)) {
646 desktop->zoom_absolute(nv->cx, nv->cy, nv->zoom);
647 } else if (sp_desktop_document(desktop)) { // document without saved zoom, zoom to its page
648 desktop->zoom_page();
649 }
651 // cancel any history of zooms up to this point
652 if (desktop->zooms_past) {
653 g_list_free(desktop->zooms_past);
654 desktop->zooms_past = NULL;
655 }
657 SPObject *layer = NULL;
658 SPDocument *document = desktop->doc();
659 if ( nv->default_layer_id != 0 ) {
660 layer = document->getObjectById(g_quark_to_string(nv->default_layer_id));
661 }
662 // don't use that object if it's not at least group
663 if ( !layer || !SP_IS_GROUP(layer) ) {
664 layer = NULL;
665 }
666 // if that didn't work out, look for the topmost layer
667 if (!layer) {
668 SPObject *iter = sp_object_first_child(SP_DOCUMENT_ROOT(document));
669 for ( ; iter ; iter = SP_OBJECT_NEXT(iter) ) {
670 if (desktop->isLayer(iter)) {
671 layer = iter;
672 }
673 }
674 }
675 if (layer) {
676 desktop->setCurrentLayer(layer);
677 }
679 // FIXME: find a better place to do this
680 sp_desktop_document(desktop)->getEventLog().updateUndoVerbs();
681 }
683 void sp_namedview_document_from_window(SPDesktop *desktop)
684 {
685 gint save_geometry = prefs_get_int_attribute("options.savewindowgeometry", "value", 0);
686 Inkscape::XML::Node *view = SP_OBJECT_REPR(desktop->namedview);
687 NR::Rect const r = desktop->get_display_area();
689 // saving window geometry is not undoable
690 gboolean saved = sp_document_get_undo_sensitive(sp_desktop_document(desktop));
691 sp_document_set_undo_sensitive(sp_desktop_document(desktop), FALSE);
693 sp_repr_set_svg_double(view, "inkscape:zoom", desktop->current_zoom());
694 sp_repr_set_svg_double(view, "inkscape:cx", r.midpoint()[NR::X]);
695 sp_repr_set_svg_double(view, "inkscape:cy", r.midpoint()[NR::Y]);
697 if (save_geometry) {
698 gint w, h, x, y;
699 desktop->getWindowGeometry(x, y, w, h);
700 sp_repr_set_int(view, "inkscape:window-width", w);
701 sp_repr_set_int(view, "inkscape:window-height", h);
702 sp_repr_set_int(view, "inkscape:window-x", x);
703 sp_repr_set_int(view, "inkscape:window-y", y);
704 }
706 view->setAttribute("inkscape:current-layer", SP_OBJECT_ID(desktop->currentLayer()));
708 // restore undoability
709 sp_document_set_undo_sensitive(sp_desktop_document(desktop), saved);
710 }
712 void SPNamedView::hide(SPDesktop const *desktop)
713 {
714 g_assert(desktop != NULL);
715 g_assert(g_slist_find(views, desktop));
717 for (GSList *l = guides; l != NULL; l = l->next) {
718 sp_guide_hide(SP_GUIDE(l->data), sp_desktop_canvas(desktop));
719 }
721 views = g_slist_remove(views, desktop);
723 GSList *l;
724 for (l = gridviews; l != NULL; l = l->next) {
725 if (SP_CANVAS_ITEM(l->data)->canvas == sp_desktop_canvas(desktop)) {
726 break;
727 }
728 }
730 g_assert(l);
732 sp_canvas_item_hide(SP_CANVAS_ITEM(l->data));
733 gtk_object_unref(GTK_OBJECT(l->data));
734 gridviews = g_slist_remove(gridviews, l->data);
735 }
737 void SPNamedView::activateGuides(gpointer desktop, gboolean active)
738 {
739 g_assert(desktop != NULL);
740 g_assert(g_slist_find(views, desktop));
742 SPDesktop *dt = static_cast<SPDesktop*>(desktop);
744 for (GSList *l = guides; l != NULL; l = l->next) {
745 sp_guide_sensitize(SP_GUIDE(l->data), sp_desktop_canvas(dt), active);
746 }
747 }
749 static void sp_namedview_setup_guides(SPNamedView *nv)
750 {
751 for (GSList *l = nv->guides; l != NULL; l = l->next) {
752 if (nv->showguides) {
753 for (GSList *v = SP_GUIDE(l->data)->views; v != NULL; v = v->next) {
754 sp_canvas_item_show(SP_CANVAS_ITEM(v->data));
755 }
756 } else {
757 for (GSList *v = SP_GUIDE(l->data)->views; v != NULL; v = v->next) {
758 sp_canvas_item_hide(SP_CANVAS_ITEM(v->data));
759 }
760 }
761 }
762 }
764 void sp_namedview_toggle_guides(SPDocument *doc, Inkscape::XML::Node *repr)
765 {
766 unsigned int v;
767 unsigned int set = sp_repr_get_boolean(repr, "showguides", &v);
768 if (!set) { // hide guides if not specified, for backwards compatibility
769 v = FALSE;
770 } else {
771 v = !v;
772 }
774 gboolean saved = sp_document_get_undo_sensitive(doc);
775 sp_document_set_undo_sensitive(doc, FALSE);
777 sp_repr_set_boolean(repr, "showguides", v);
779 doc->rroot->setAttribute("sodipodi:modified", "true");
780 sp_document_set_undo_sensitive(doc, saved);
781 }
783 void sp_namedview_toggle_grid(SPDocument *doc, Inkscape::XML::Node *repr)
784 {
785 unsigned int v;
786 sp_repr_get_boolean(repr, "showgrid", &v);
787 v = !v;
789 gboolean saved = sp_document_get_undo_sensitive(doc);
790 sp_document_set_undo_sensitive(doc, FALSE);
792 sp_repr_set_boolean(repr, "showgrid", v);
794 doc->rroot->setAttribute("sodipodi:modified", "true");
795 sp_document_set_undo_sensitive(doc, saved);
796 }
798 static void sp_namedview_setup_grid(SPNamedView *nv)
799 {
800 for (GSList *l = nv->gridviews; l != NULL; l = l->next) {
801 sp_namedview_setup_grid_item(nv, SP_CANVAS_ITEM(l->data));
802 }
803 }
805 static void sp_namedview_setup_grid_item(SPNamedView *nv, SPCanvasItem *item)
806 {
807 if (nv->showgrid) {
808 sp_canvas_item_show(item);
809 } else {
810 sp_canvas_item_hide(item);
811 }
813 sp_canvas_item_set((GtkObject *) item,
814 "color", nv->gridcolor,
815 "originx", nv->gridorigin[NR::X],
816 "originy", nv->gridorigin[NR::Y],
817 "spacingx", nv->gridspacing[NR::X],
818 "spacingy", nv->gridspacing[NR::Y],
819 "empcolor", nv->gridempcolor,
820 "empspacing", nv->gridempspacing,
821 NULL);
822 }
824 gchar const *SPNamedView::getName() const
825 {
826 SPException ex;
827 SP_EXCEPTION_INIT(&ex);
828 return sp_object_getAttribute(SP_OBJECT(this), "id", &ex);
829 }
831 guint SPNamedView::getViewCount()
832 {
833 return ++viewcount;
834 }
836 GSList const *SPNamedView::getViewList() const
837 {
838 return views;
839 }
841 /* This should be moved somewhere */
843 static gboolean sp_str_to_bool(const gchar *str)
844 {
845 if (str) {
846 if (!g_strcasecmp(str, "true") ||
847 !g_strcasecmp(str, "yes") ||
848 !g_strcasecmp(str, "y") ||
849 (atoi(str) != 0)) {
850 return TRUE;
851 }
852 }
854 return FALSE;
855 }
857 /* fixme: Collect all these length parsing methods and think common sane API */
859 static gboolean sp_nv_read_length(const gchar *str, guint base, gdouble *val, const SPUnit **unit)
860 {
861 if (!str) {
862 return FALSE;
863 }
865 gchar *u;
866 gdouble v = g_ascii_strtod(str, &u);
867 if (!u) {
868 return FALSE;
869 }
870 while (isspace(*u)) {
871 u += 1;
872 }
874 if (!*u) {
875 /* No unit specified - keep default */
876 *val = v;
877 return TRUE;
878 }
880 if (base & SP_UNIT_DEVICE) {
881 if (u[0] && u[1] && !isalnum(u[2]) && !strncmp(u, "px", 2)) {
882 *unit = &sp_unit_get_by_id(SP_UNIT_PX);
883 *val = v;
884 return TRUE;
885 }
886 }
888 if (base & SP_UNIT_ABSOLUTE) {
889 if (!strncmp(u, "pt", 2)) {
890 *unit = &sp_unit_get_by_id(SP_UNIT_PT);
891 } else if (!strncmp(u, "mm", 2)) {
892 *unit = &sp_unit_get_by_id(SP_UNIT_MM);
893 } else if (!strncmp(u, "cm", 2)) {
894 *unit = &sp_unit_get_by_id(SP_UNIT_CM);
895 } else if (!strncmp(u, "m", 1)) {
896 *unit = &sp_unit_get_by_id(SP_UNIT_M);
897 } else if (!strncmp(u, "in", 2)) {
898 *unit = &sp_unit_get_by_id(SP_UNIT_IN);
899 } else {
900 return FALSE;
901 }
902 *val = v;
903 return TRUE;
904 }
906 return FALSE;
907 }
909 static gboolean sp_nv_read_opacity(const gchar *str, guint32 *color)
910 {
911 if (!str) {
912 return FALSE;
913 }
915 gchar *u;
916 gdouble v = strtod(str, &u);
917 if (!u) {
918 return FALSE;
919 }
920 v = CLAMP(v, 0.0, 1.0);
922 *color = (*color & 0xffffff00) | (guint32) floor(v * 255.9999);
924 return TRUE;
925 }
927 SPNamedView *sp_document_namedview(SPDocument *document, const gchar *id)
928 {
929 g_return_val_if_fail(document != NULL, NULL);
931 SPObject *nv = sp_item_group_get_child_by_name((SPGroup *) document->root, NULL, "sodipodi:namedview");
932 g_assert(nv != NULL);
934 if (id == NULL) {
935 return (SPNamedView *) nv;
936 }
938 while (nv && strcmp(nv->id, id)) {
939 nv = sp_item_group_get_child_by_name((SPGroup *) document->root, nv, "sodipodi:namedview");
940 }
942 return (SPNamedView *) nv;
943 }
945 /**
946 * Returns namedview's default metric.
947 */
948 SPMetric SPNamedView::getDefaultMetric() const
949 {
950 if (doc_units) {
951 return sp_unit_get_metric(doc_units);
952 } else {
953 return SP_PT;
954 }
955 }
957 /*
958 Local Variables:
959 mode:c++
960 c-file-style:"stroustrup"
961 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
962 indent-tabs-mode:nil
963 fill-column:99
964 End:
965 */
966 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :