4be180237da119729dc7461c799463b5bcbacadd
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 // explicitly call a contructor
108 new(nv) SPNamedView();
110 nv->editable = TRUE;
111 nv->showgrid = FALSE;
112 nv->showguides = TRUE;
113 nv->showborder = TRUE;
114 nv->showpageshadow = TRUE;
116 nv->guides = NULL;
117 nv->viewcount = 0;
119 nv->default_layer_id = 0;
121 nv->connector_spacing = defaultConnSpacing;
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->~SPNamedView();
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 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
226 break;
227 case SP_ATTR_SHOWGUIDES:
228 if (!value) { // show guides if not specified, for backwards compatibility
229 nv->showguides = TRUE;
230 } else {
231 nv->showguides = sp_str_to_bool(value);
232 }
233 sp_namedview_setup_guides(nv);
234 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
235 break;
236 case SP_ATTR_GRIDTOLERANCE:
237 nv->gridtoleranceunit = &px;
238 nv->gridtolerance = DEFAULTTOLERANCE;
239 if (value) {
240 sp_nv_read_length(value, SP_UNIT_ABSOLUTE | SP_UNIT_DEVICE, &nv->gridtolerance, &nv->gridtoleranceunit);
241 }
242 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
243 break;
244 case SP_ATTR_GUIDETOLERANCE:
245 nv->guidetoleranceunit = &px;
246 nv->guidetolerance = DEFAULTTOLERANCE;
247 if (value) {
248 sp_nv_read_length(value, SP_UNIT_ABSOLUTE | SP_UNIT_DEVICE, &nv->guidetolerance, &nv->guidetoleranceunit);
249 }
250 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
251 break;
252 case SP_ATTR_OBJECTTOLERANCE:
253 nv->objecttoleranceunit = &px;
254 nv->objecttolerance = DEFAULTTOLERANCE;
255 if (value) {
256 sp_nv_read_length(value, SP_UNIT_ABSOLUTE | SP_UNIT_DEVICE, &nv->objecttolerance, &nv->objecttoleranceunit);
257 }
258 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
259 break;
260 case SP_ATTR_ABS_TOLERANCE:
261 if (!value)
262 nv->has_abs_tolerance = true;
263 else
264 nv->has_abs_tolerance = (sp_str_to_bool (value) == TRUE);
265 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
266 break;
267 case SP_ATTR_GRIDORIGINX:
268 case SP_ATTR_GRIDORIGINY:
269 {
270 unsigned const d = (key == SP_ATTR_GRIDORIGINY);
271 nv->gridunit = nv->doc_units;
272 nv->gridorigin[d] = 0.0;
273 if (value) {
274 sp_nv_read_length(value, SP_UNIT_ABSOLUTE | SP_UNIT_DEVICE, &nv->gridorigin[d], &nv->gridunit);
275 }
276 nv->gridorigin[d] = sp_units_get_pixels(nv->gridorigin[d], *(nv->gridunit));
277 sp_namedview_setup_grid(nv);
278 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
279 break;
280 }
281 case SP_ATTR_GRIDSPACINGX:
282 case SP_ATTR_GRIDSPACINGY:
283 {
284 unsigned const d = (key == SP_ATTR_GRIDSPACINGY);
285 nv->gridunit = nv->doc_units;
286 nv->gridspacing[d] = 1.0;
287 if (value) {
288 sp_nv_read_length(value, SP_UNIT_ABSOLUTE | SP_UNIT_DEVICE, &nv->gridspacing[d], &nv->gridunit);
289 }
290 nv->gridspacing[d] = sp_units_get_pixels(nv->gridspacing[d], *(nv->gridunit));
291 sp_namedview_setup_grid(nv);
292 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
293 break;
294 }
295 case SP_ATTR_GRIDCOLOR:
296 nv->gridcolor = (nv->gridcolor & 0xff) | (DEFAULTGRIDCOLOR & 0xffffff00);
297 if (value) {
298 nv->gridcolor = (nv->gridcolor & 0xff) | sp_svg_read_color(value, nv->gridcolor);
299 }
300 sp_namedview_setup_grid(nv);
301 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
302 break;
303 case SP_ATTR_GRIDEMPCOLOR:
304 nv->gridempcolor = (nv->gridempcolor & 0xff) | (DEFAULTGRIDEMPCOLOR & 0xffffff00);
305 if (value) {
306 nv->gridempcolor = (nv->gridempcolor & 0xff) | sp_svg_read_color(value, nv->gridempcolor);
307 }
308 sp_namedview_setup_grid(nv);
309 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
310 break;
311 case SP_ATTR_GRIDOPACITY:
312 nv->gridcolor = (nv->gridcolor & 0xffffff00) | (DEFAULTGRIDCOLOR & 0xff);
313 sp_nv_read_opacity(value, &nv->gridcolor);
314 sp_namedview_setup_grid(nv);
315 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
316 break;
317 case SP_ATTR_GRIDEMPOPACITY:
318 nv->gridempcolor = (nv->gridempcolor & 0xffffff00) | (DEFAULTGRIDEMPCOLOR & 0xff);
319 sp_nv_read_opacity(value, &nv->gridempcolor);
320 sp_namedview_setup_grid(nv);
321 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
322 break;
323 case SP_ATTR_GRIDEMPSPACING:
324 nv->gridempspacing = DEFAULTGRIDEMPSPACING;
325 if (value != NULL)
326 nv->gridempspacing = atoi(value);
327 sp_namedview_setup_grid(nv);
328 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
329 break;
330 case SP_ATTR_GUIDECOLOR:
331 nv->guidecolor = (nv->guidecolor & 0xff) | (DEFAULTGUIDECOLOR & 0xffffff00);
332 if (value) {
333 nv->guidecolor = (nv->guidecolor & 0xff) | sp_svg_read_color(value, nv->guidecolor);
334 }
335 for (GSList *l = nv->guides; l != NULL; l = l->next) {
336 g_object_set(G_OBJECT(l->data), "color", nv->guidecolor, NULL);
337 }
338 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
339 break;
340 case SP_ATTR_GUIDEOPACITY:
341 nv->guidecolor = (nv->guidecolor & 0xffffff00) | (DEFAULTGUIDECOLOR & 0xff);
342 sp_nv_read_opacity(value, &nv->guidecolor);
343 for (GSList *l = nv->guides; l != NULL; l = l->next) {
344 g_object_set(G_OBJECT(l->data), "color", nv->guidecolor, NULL);
345 }
346 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
347 break;
348 case SP_ATTR_GUIDEHICOLOR:
349 nv->guidehicolor = (nv->guidehicolor & 0xff) | (DEFAULTGUIDEHICOLOR & 0xffffff00);
350 if (value) {
351 nv->guidehicolor = (nv->guidehicolor & 0xff) | sp_svg_read_color(value, nv->guidehicolor);
352 }
353 for (GSList *l = nv->guides; l != NULL; l = l->next) {
354 g_object_set(G_OBJECT(l->data), "hicolor", nv->guidehicolor, NULL);
355 }
356 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
357 break;
358 case SP_ATTR_GUIDEHIOPACITY:
359 nv->guidehicolor = (nv->guidehicolor & 0xffffff00) | (DEFAULTGUIDEHICOLOR & 0xff);
360 sp_nv_read_opacity(value, &nv->guidehicolor);
361 for (GSList *l = nv->guides; l != NULL; l = l->next) {
362 g_object_set(G_OBJECT(l->data), "hicolor", nv->guidehicolor, NULL);
363 }
364 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
365 break;
366 case SP_ATTR_SHOWBORDER:
367 nv->showborder = (value) ? sp_str_to_bool (value) : TRUE;
368 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
369 break;
370 case SP_ATTR_BORDERLAYER:
371 nv->borderlayer = SP_BORDER_LAYER_BOTTOM;
372 if (value && !strcasecmp(value, "true")) nv->borderlayer = SP_BORDER_LAYER_TOP;
373 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
374 break;
375 case SP_ATTR_BORDERCOLOR:
376 nv->bordercolor = (nv->bordercolor & 0xff) | (DEFAULTBORDERCOLOR & 0xffffff00);
377 if (value) {
378 nv->bordercolor = (nv->bordercolor & 0xff) | sp_svg_read_color (value, nv->bordercolor);
379 }
380 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
381 break;
382 case SP_ATTR_BORDEROPACITY:
383 nv->bordercolor = (nv->bordercolor & 0xffffff00) | (DEFAULTBORDERCOLOR & 0xff);
384 sp_nv_read_opacity(value, &nv->bordercolor);
385 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
386 break;
387 case SP_ATTR_PAGECOLOR:
388 nv->pagecolor = (nv->pagecolor & 0xff) | (DEFAULTPAGECOLOR & 0xffffff00);
389 if (value) {
390 nv->pagecolor = (nv->pagecolor & 0xff) | sp_svg_read_color(value, nv->pagecolor);
391 }
392 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
393 break;
394 case SP_ATTR_INKSCAPE_PAGEOPACITY:
395 nv->pagecolor = (nv->pagecolor & 0xffffff00) | (DEFAULTPAGECOLOR & 0xff);
396 sp_nv_read_opacity(value, &nv->pagecolor);
397 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
398 break;
399 case SP_ATTR_INKSCAPE_PAGESHADOW:
400 nv->pageshadow = value? atoi(value) : 2; // 2 is the default
401 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
402 break;
403 case SP_ATTR_SHOWPAGESHADOW:
404 nv->showpageshadow = (value) ? sp_str_to_bool(value) : TRUE;
405 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
406 break;
407 case SP_ATTR_INKSCAPE_ZOOM:
408 nv->zoom = value ? g_ascii_strtod(value, NULL) : 0; // zero means not set
409 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
410 break;
411 case SP_ATTR_INKSCAPE_CX:
412 nv->cx = value ? g_ascii_strtod(value, NULL) : HUGE_VAL; // HUGE_VAL means not set
413 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
414 break;
415 case SP_ATTR_INKSCAPE_CY:
416 nv->cy = value ? g_ascii_strtod(value, NULL) : HUGE_VAL; // HUGE_VAL means not set
417 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
418 break;
419 case SP_ATTR_INKSCAPE_WINDOW_WIDTH:
420 nv->window_width = value? atoi(value) : -1; // -1 means not set
421 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
422 break;
423 case SP_ATTR_INKSCAPE_WINDOW_HEIGHT:
424 nv->window_height = value ? atoi(value) : -1; // -1 means not set
425 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
426 break;
427 case SP_ATTR_INKSCAPE_WINDOW_X:
428 nv->window_x = value ? atoi(value) : -1; // -1 means not set
429 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
430 break;
431 case SP_ATTR_INKSCAPE_WINDOW_Y:
432 nv->window_y = value ? atoi(value) : -1; // -1 means not set
433 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
434 break;
435 case SP_ATTR_INKSCAPE_GRID_BBOX:
436 nv->snap_manager.grid.setSnapTo(Inkscape::Snapper::BBOX_POINT, value ? sp_str_to_bool(value) : TRUE);
437 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
438 break;
439 case SP_ATTR_INKSCAPE_GRID_POINTS:
440 nv->snap_manager.grid.setSnapTo(Inkscape::Snapper::SNAP_POINT, value ? sp_str_to_bool(value) : FALSE);
441 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
442 break;
443 case SP_ATTR_INKSCAPE_GUIDE_BBOX:
444 nv->snap_manager.guide.setSnapTo(Inkscape::Snapper::BBOX_POINT, value ? sp_str_to_bool(value) : TRUE);
445 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
446 break;
447 case SP_ATTR_INKSCAPE_GUIDE_POINTS:
448 nv->snap_manager.guide.setSnapTo(Inkscape::Snapper::SNAP_POINT, value ? sp_str_to_bool(value) : FALSE);
449 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
450 break;
451 case SP_ATTR_INKSCAPE_OBJECT_BBOX:
452 nv->snap_manager.object.setSnapTo(Inkscape::Snapper::BBOX_POINT, (value) ? sp_str_to_bool(value) : FALSE);
453 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
454 break;
455 case SP_ATTR_INKSCAPE_OBJECT_POINTS:
456 nv->snap_manager.object.setSnapTo(Inkscape::Snapper::SNAP_POINT, (value) ? sp_str_to_bool(value) : FALSE);
457 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
458 break;
459 case SP_ATTR_INKSCAPE_OBJECT_PATHS:
460 nv->snap_manager.object.setSnapToPaths(value ? sp_str_to_bool(value) : TRUE);
461 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
462 break;
463 case SP_ATTR_INKSCAPE_OBJECT_NODES:
464 nv->snap_manager.object.setSnapToNodes(value ? sp_str_to_bool(value) : TRUE);
465 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
466 break;
467 case SP_ATTR_INKSCAPE_CURRENT_LAYER:
468 nv->default_layer_id = value ? g_quark_from_string(value) : 0;
469 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
470 break;
471 case SP_ATTR_INKSCAPE_CONNECTOR_SPACING:
472 nv->connector_spacing = value ? g_ascii_strtod(value, NULL) :
473 defaultConnSpacing;
474 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
475 break;
476 case SP_ATTR_INKSCAPE_DOCUMENT_UNITS: {
477 /* The default unit if the document doesn't override this: e.g. for files saved as
478 * `plain SVG', or non-inkscape files, or files created by an inkscape 0.40 &
479 * earlier.
480 *
481 * Here we choose `px': useful for screen-destined SVGs, and fewer bug reports
482 * about "not the same numbers as what's in the SVG file" (at least for documents
483 * without a viewBox attribute on the root <svg> element). Similarly, it's also
484 * the most reliable unit (i.e. least likely to be wrong in different viewing
485 * conditions) for viewBox-less SVG files given that it's the unit that inkscape
486 * uses for all coordinates.
487 *
488 * For documents that do have a viewBox attribute on the root <svg> element, it
489 * might be better if we used either viewBox coordinates or if we used the unit of
490 * say the width attribute of the root <svg> element. However, these pose problems
491 * in that they aren't in general absolute units as currently required by
492 * doc_units.
493 */
494 SPUnit const *new_unit = &sp_unit_get_by_id(SP_UNIT_PX);
496 if (value) {
497 SPUnit const *const req_unit = sp_unit_get_by_abbreviation(value);
498 if ( req_unit == NULL ) {
499 g_warning("Unrecognized unit `%s'", value);
500 /* fixme: Document errors should be reported in the status bar or
501 * the like (e.g. as per
502 * http://www.w3.org/TR/SVG11/implnote.html#ErrorProcessing); g_log
503 * should be only for programmer errors. */
504 } else if ( req_unit->base == SP_UNIT_ABSOLUTE ||
505 req_unit->base == SP_UNIT_DEVICE ) {
506 new_unit = req_unit;
507 } else {
508 g_warning("Document units must be absolute like `mm', `pt' or `px', but found `%s'",
509 value);
510 /* fixme: Don't use g_log (see above). */
511 }
512 }
513 nv->doc_units = new_unit;
514 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
515 break;
516 }
517 default:
518 if (((SPObjectClass *) (parent_class))->set) {
519 ((SPObjectClass *) (parent_class))->set(object, key, value);
520 }
521 break;
522 }
523 }
525 static void sp_namedview_child_added(SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *ref)
526 {
527 SPNamedView *nv = (SPNamedView *) object;
529 if (((SPObjectClass *) (parent_class))->child_added) {
530 (* ((SPObjectClass *) (parent_class))->child_added)(object, child, ref);
531 }
533 const gchar *id = child->attribute("id");
534 SPObject *no = object->document->getObjectById(id);
535 g_assert(SP_IS_OBJECT(no));
537 if (SP_IS_GUIDE(no)) {
538 SPGuide *g = (SPGuide *) no;
539 nv->guides = g_slist_prepend(nv->guides, g);
540 g_object_set(G_OBJECT(g), "color", nv->guidecolor, "hicolor", nv->guidehicolor, NULL);
541 if (nv->editable) {
542 for (GSList *l = nv->views; l != NULL; l = l->next) {
543 sp_guide_show(g, static_cast<SPDesktop*>(l->data)->guides, (GCallback) sp_dt_guide_event);
544 if (static_cast<SPDesktop*>(l->data)->guides_active)
545 sp_guide_sensitize(g,
546 sp_desktop_canvas(static_cast<SPDesktop*> (l->data)),
547 TRUE);
548 if (nv->showguides) {
549 for (GSList *v = SP_GUIDE(g)->views; v != NULL; v = v->next) {
550 sp_canvas_item_show(SP_CANVAS_ITEM(v->data));
551 }
552 } else {
553 for (GSList *v = SP_GUIDE(g)->views; v != NULL; v = v->next) {
554 sp_canvas_item_hide(SP_CANVAS_ITEM(v->data));
555 }
556 }
557 }
558 }
559 }
560 }
562 static void sp_namedview_remove_child(SPObject *object, Inkscape::XML::Node *child)
563 {
564 SPNamedView *nv = (SPNamedView *) object;
566 GSList **ref = &nv->guides;
567 for ( GSList *iter = nv->guides ; iter ; iter = iter->next ) {
568 if ( SP_OBJECT_REPR((SPObject *)iter->data) == child ) {
569 *ref = iter->next;
570 iter->next = NULL;
571 g_slist_free_1(iter);
572 break;
573 }
574 ref = &iter->next;
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 repr = SP_OBJECT_REPR(object)->duplicate();
591 }
592 }
594 return repr;
595 }
597 void SPNamedView::show(SPDesktop *desktop)
598 {
599 for (GSList *l = guides; l != NULL; l = l->next) {
600 sp_guide_show(SP_GUIDE(l->data), desktop->guides, (GCallback) sp_dt_guide_event);
601 if (desktop->guides_active) {
602 sp_guide_sensitize(SP_GUIDE(l->data), sp_desktop_canvas(desktop), TRUE);
603 }
604 if (showguides) {
605 for (GSList *v = SP_GUIDE(l->data)->views; v != NULL; v = v->next) {
606 sp_canvas_item_show(SP_CANVAS_ITEM(v->data));
607 }
608 } else {
609 for (GSList *v = SP_GUIDE(l->data)->views; v != NULL; v = v->next) {
610 sp_canvas_item_hide(SP_CANVAS_ITEM(v->data));
611 }
612 }
613 }
615 views = g_slist_prepend(views, desktop);
617 SPCanvasItem *item = sp_canvas_item_new(sp_desktop_grid(desktop), SP_TYPE_CGRID, NULL);
618 // since we're keeping a copy, we need to bump up the ref count
619 gtk_object_ref(GTK_OBJECT(item));
620 gridviews = g_slist_prepend(gridviews, item);
621 sp_namedview_setup_grid_item(this, item);
622 }
624 /*
625 * Restores window geometry from the document settings
626 */
627 void sp_namedview_window_from_document(SPDesktop *desktop)
628 {
629 SPNamedView *nv = desktop->namedview;
630 gint save_geometry = prefs_get_int_attribute("options.savewindowgeometry", "value", 0);
632 // restore window size and position
633 if (save_geometry) {
634 if (nv->window_width != -1 && nv->window_height != -1)
635 desktop->setWindowSize(nv->window_width, nv->window_height);
636 if (nv->window_x != -1 && nv->window_y != -1)
637 desktop->setWindowPosition(NR::Point(nv->window_x, nv->window_y));
638 }
640 // restore zoom and view
641 if (nv->zoom != 0 && nv->zoom != HUGE_VAL && !isNaN(nv->zoom)
642 && nv->cx != HUGE_VAL && !isNaN(nv->cx)
643 && nv->cy != HUGE_VAL && !isNaN(nv->cy)) {
644 desktop->zoom_absolute(nv->cx, nv->cy, nv->zoom);
645 } else if (sp_desktop_document(desktop)) { // document without saved zoom, zoom to its page
646 desktop->zoom_page();
647 }
649 // cancel any history of zooms up to this point
650 if (desktop->zooms_past) {
651 g_list_free(desktop->zooms_past);
652 desktop->zooms_past = NULL;
653 }
655 SPObject *layer = NULL;
656 SPDocument *document = desktop->doc();
657 if ( nv->default_layer_id != 0 ) {
658 layer = document->getObjectById(g_quark_to_string(nv->default_layer_id));
659 }
660 // don't use that object if it's not at least group
661 if ( !layer || !SP_IS_GROUP(layer) ) {
662 layer = NULL;
663 }
664 // if that didn't work out, look for the topmost layer
665 if (!layer) {
666 SPObject *iter = sp_object_first_child(SP_DOCUMENT_ROOT(document));
667 for ( ; iter ; iter = SP_OBJECT_NEXT(iter) ) {
668 if (desktop->isLayer(iter)) {
669 layer = iter;
670 }
671 }
672 }
673 if (layer) {
674 desktop->setCurrentLayer(layer);
675 }
676 }
678 void sp_namedview_document_from_window(SPDesktop *desktop)
679 {
680 gint save_geometry = prefs_get_int_attribute("options.savewindowgeometry", "value", 0);
681 Inkscape::XML::Node *view = SP_OBJECT_REPR(desktop->namedview);
682 NR::Rect const r = desktop->get_display_area();
684 // saving window geometry is not undoable
685 gboolean saved = sp_document_get_undo_sensitive(sp_desktop_document(desktop));
686 sp_document_set_undo_sensitive(sp_desktop_document(desktop), FALSE);
688 sp_repr_set_svg_double(view, "inkscape:zoom", desktop->current_zoom());
689 sp_repr_set_svg_double(view, "inkscape:cx", r.midpoint()[NR::X]);
690 sp_repr_set_svg_double(view, "inkscape:cy", r.midpoint()[NR::Y]);
692 if (save_geometry) {
693 gint w, h, x, y;
694 desktop->getWindowGeometry(x, y, w, h);
695 sp_repr_set_int(view, "inkscape:window-width", w);
696 sp_repr_set_int(view, "inkscape:window-height", h);
697 sp_repr_set_int(view, "inkscape:window-x", x);
698 sp_repr_set_int(view, "inkscape:window-y", y);
699 }
701 view->setAttribute("inkscape:current-layer", SP_OBJECT_ID(desktop->currentLayer()));
703 // restore undoability
704 sp_document_set_undo_sensitive(sp_desktop_document(desktop), saved);
705 }
707 void SPNamedView::hide(SPDesktop const *desktop)
708 {
709 g_assert(desktop != NULL);
710 g_assert(g_slist_find(views, desktop));
712 for (GSList *l = guides; l != NULL; l = l->next) {
713 sp_guide_hide(SP_GUIDE(l->data), sp_desktop_canvas(desktop));
714 }
716 views = g_slist_remove(views, desktop);
718 GSList *l;
719 for (l = gridviews; l != NULL; l = l->next) {
720 if (SP_CANVAS_ITEM(l->data)->canvas == sp_desktop_canvas(desktop)) {
721 break;
722 }
723 }
725 g_assert(l);
727 sp_canvas_item_hide(SP_CANVAS_ITEM(l->data));
728 gtk_object_unref(GTK_OBJECT(l->data));
729 gridviews = g_slist_remove(gridviews, l->data);
730 }
732 void SPNamedView::activateGuides(gpointer desktop, gboolean active)
733 {
734 g_assert(desktop != NULL);
735 g_assert(g_slist_find(views, desktop));
737 SPDesktop *dt = static_cast<SPDesktop*>(desktop);
739 for (GSList *l = guides; l != NULL; l = l->next) {
740 sp_guide_sensitize(SP_GUIDE(l->data), sp_desktop_canvas(dt), active);
741 }
742 }
744 static void sp_namedview_setup_guides(SPNamedView *nv)
745 {
746 for (GSList *l = nv->guides; l != NULL; l = l->next) {
747 if (nv->showguides) {
748 for (GSList *v = SP_GUIDE(l->data)->views; v != NULL; v = v->next) {
749 sp_canvas_item_show(SP_CANVAS_ITEM(v->data));
750 }
751 } else {
752 for (GSList *v = SP_GUIDE(l->data)->views; v != NULL; v = v->next) {
753 sp_canvas_item_hide(SP_CANVAS_ITEM(v->data));
754 }
755 }
756 }
757 }
759 void sp_namedview_toggle_guides(SPDocument *doc, Inkscape::XML::Node *repr)
760 {
761 unsigned int v;
762 unsigned int set = sp_repr_get_boolean(repr, "showguides", &v);
763 if (!set) { // hide guides if not specified, for backwards compatibility
764 v = FALSE;
765 } else {
766 v = !v;
767 }
769 gboolean saved = sp_document_get_undo_sensitive(doc);
770 sp_document_set_undo_sensitive(doc, FALSE);
772 sp_repr_set_boolean(repr, "showguides", v);
774 doc->rroot->setAttribute("sodipodi:modified", "true");
775 sp_document_set_undo_sensitive(doc, saved);
776 }
778 void sp_namedview_toggle_grid(SPDocument *doc, Inkscape::XML::Node *repr)
779 {
780 unsigned int v;
781 sp_repr_get_boolean(repr, "showgrid", &v);
782 v = !v;
784 gboolean saved = sp_document_get_undo_sensitive(doc);
785 sp_document_set_undo_sensitive(doc, FALSE);
787 sp_repr_set_boolean(repr, "showgrid", v);
789 doc->rroot->setAttribute("sodipodi:modified", "true");
790 sp_document_set_undo_sensitive(doc, saved);
791 }
793 static void sp_namedview_setup_grid(SPNamedView *nv)
794 {
795 for (GSList *l = nv->gridviews; l != NULL; l = l->next) {
796 sp_namedview_setup_grid_item(nv, SP_CANVAS_ITEM(l->data));
797 }
798 }
800 static void sp_namedview_setup_grid_item(SPNamedView *nv, SPCanvasItem *item)
801 {
802 if (nv->showgrid) {
803 sp_canvas_item_show(item);
804 } else {
805 sp_canvas_item_hide(item);
806 }
808 sp_canvas_item_set((GtkObject *) item,
809 "color", nv->gridcolor,
810 "originx", nv->gridorigin[NR::X],
811 "originy", nv->gridorigin[NR::Y],
812 "spacingx", nv->gridspacing[NR::X],
813 "spacingy", nv->gridspacing[NR::Y],
814 "empcolor", nv->gridempcolor,
815 "empspacing", nv->gridempspacing,
816 NULL);
817 }
819 gchar const *SPNamedView::getName() const
820 {
821 SPException ex;
822 SP_EXCEPTION_INIT(&ex);
823 return sp_object_getAttribute(SP_OBJECT(this), "id", &ex);
824 }
826 guint SPNamedView::getViewCount()
827 {
828 return ++viewcount;
829 }
831 GSList const *SPNamedView::getViewList() const
832 {
833 return views;
834 }
836 /* This should be moved somewhere */
838 static gboolean sp_str_to_bool(const gchar *str)
839 {
840 if (str) {
841 if (!g_strcasecmp(str, "true") ||
842 !g_strcasecmp(str, "yes") ||
843 !g_strcasecmp(str, "y") ||
844 (atoi(str) != 0)) {
845 return TRUE;
846 }
847 }
849 return FALSE;
850 }
852 /* fixme: Collect all these length parsing methods and think common sane API */
854 static gboolean sp_nv_read_length(const gchar *str, guint base, gdouble *val, const SPUnit **unit)
855 {
856 if (!str) {
857 return FALSE;
858 }
860 gchar *u;
861 gdouble v = g_ascii_strtod(str, &u);
862 if (!u) {
863 return FALSE;
864 }
865 while (isspace(*u)) {
866 u += 1;
867 }
869 if (!*u) {
870 /* No unit specified - keep default */
871 *val = v;
872 return TRUE;
873 }
875 if (base & SP_UNIT_DEVICE) {
876 if (u[0] && u[1] && !isalnum(u[2]) && !strncmp(u, "px", 2)) {
877 *unit = &sp_unit_get_by_id(SP_UNIT_PX);
878 *val = v;
879 return TRUE;
880 }
881 }
883 if (base & SP_UNIT_ABSOLUTE) {
884 if (!strncmp(u, "pt", 2)) {
885 *unit = &sp_unit_get_by_id(SP_UNIT_PT);
886 } else if (!strncmp(u, "mm", 2)) {
887 *unit = &sp_unit_get_by_id(SP_UNIT_MM);
888 } else if (!strncmp(u, "cm", 2)) {
889 *unit = &sp_unit_get_by_id(SP_UNIT_CM);
890 } else if (!strncmp(u, "m", 1)) {
891 *unit = &sp_unit_get_by_id(SP_UNIT_M);
892 } else if (!strncmp(u, "in", 2)) {
893 *unit = &sp_unit_get_by_id(SP_UNIT_IN);
894 } else {
895 return FALSE;
896 }
897 *val = v;
898 return TRUE;
899 }
901 return FALSE;
902 }
904 static gboolean sp_nv_read_opacity(const gchar *str, guint32 *color)
905 {
906 if (!str) {
907 return FALSE;
908 }
910 gchar *u;
911 gdouble v = strtod(str, &u);
912 if (!u) {
913 return FALSE;
914 }
915 v = CLAMP(v, 0.0, 1.0);
917 *color = (*color & 0xffffff00) | (guint32) floor(v * 255.9999);
919 return TRUE;
920 }
922 SPNamedView *sp_document_namedview(SPDocument *document, const gchar *id)
923 {
924 g_return_val_if_fail(document != NULL, NULL);
926 SPObject *nv = sp_item_group_get_child_by_name((SPGroup *) document->root, NULL, "sodipodi:namedview");
927 g_assert(nv != NULL);
929 if (id == NULL) {
930 return (SPNamedView *) nv;
931 }
933 while (nv && strcmp(nv->id, id)) {
934 nv = sp_item_group_get_child_by_name((SPGroup *) document->root, nv, "sodipodi:namedview");
935 }
937 return (SPNamedView *) nv;
938 }
940 /**
941 * Returns namedview's default metric.
942 */
943 SPMetric SPNamedView::getDefaultMetric() const
944 {
945 if (doc_units) {
946 return sp_unit_get_metric(doc_units);
947 } else {
948 return SP_PT;
949 }
950 }
952 /*
953 Local Variables:
954 mode:c++
955 c-file-style:"stroustrup"
956 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
957 indent-tabs-mode:nil
958 fill-column:99
959 End:
960 */
961 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :