src/sp-namedview.cpp

   1 #define __SP_NAMEDVIEW_C__
   2
   3 /*
   4  * <sodipodi:namedview> implementation
   5  *
   6  * Authors:
   7  *   Lauris Kaplinski <lauris@kaplinski.com>
   8  *   bulia byak <buliabyak@users.sf.net>
   9  *
  10  * Copyright (C) 2006      Johan Engelen <johan@shouraizou.nl>
  11  * Copyright (C) 1999-2005 Authors
  12  * Copyright (C) 2000-2001 Ximian, Inc.
  13  *
  14  * Released under GNU GPL, read the file 'COPYING' for more information
  15  */
  16
  17 #include "config.h"
  18
  19 #include "display/canvas-grid.h"
  20 #include "display/canvas-axonomgrid.h"
  21 #include "helper/units.h"
  22 #include "svg/svg-color.h"
  23 #include "xml/repr.h"
  24 #include "attributes.h"
  25 #include "document.h"
  26 #include "desktop-events.h"
  27 #include "desktop-handles.h"
  28 #include "event-log.h"
  29 #include "sp-guide.h"
  30 #include "sp-item-group.h"
  31 #include "sp-namedview.h"
  32 #include "prefs-utils.h"
  33 #include "desktop.h"
  34 #include "conn-avoid-ref.h" // for defaultConnSpacing.
  35
  36 #include "isnan.h" //temp fix for isnan().  include last
  37
  38 #define DEFAULTTOLERANCE 0.4
  39 #define DEFAULTGRIDCOLOR 0x3f3fff25
  40 #define DEFAULTGRIDEMPCOLOR 0x3f3fff60
  41 #define DEFAULTGRIDEMPSPACING 5
  42 #define DEFAULTGUIDECOLOR 0x0000ff7f
  43 #define DEFAULTGUIDEHICOLOR 0xff00007f
  44 #define DEFAULTBORDERCOLOR 0x000000ff
  45 #define DEFAULTPAGECOLOR 0xffffff00
  46
  47 static void sp_namedview_class_init(SPNamedViewClass *klass);
  48 static void sp_namedview_init(SPNamedView *namedview);
  49
  50 static void sp_namedview_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
  51 static void sp_namedview_release(SPObject *object);
  52 static void sp_namedview_set(SPObject *object, unsigned int key, const gchar *value);
  53 static void sp_namedview_child_added(SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *ref);
  54 static void sp_namedview_remove_child(SPObject *object, Inkscape::XML::Node *child);
  55 static Inkscape::XML::Node *sp_namedview_write(SPObject *object, Inkscape::XML::Node *repr, guint flags);
  56
  57 static void sp_namedview_setup_guides(SPNamedView * nv);
  58
  59 static void sp_namedview_setup_grid(SPNamedView * nv);
  60 static void sp_namedview_setup_grid_item(SPNamedView * nv, SPCanvasItem * item);
  61
  62 static gboolean sp_str_to_bool(const gchar *str);
  63 static gboolean sp_nv_read_length(const gchar *str, guint base, gdouble *val, const SPUnit **unit);
  64 static gboolean sp_nv_read_opacity(const gchar *str, guint32 *color);
  65
  66 static SPObjectGroupClass * parent_class;
  67
  68 GType
  69 sp_namedview_get_type()
  70 {
  71     static GType namedview_type = 0;
  72     if (!namedview_type) {
  73         GTypeInfo namedview_info = {
  74             sizeof(SPNamedViewClass),
  75             NULL,       /* base_init */
  76             NULL,       /* base_finalize */
  77             (GClassInitFunc) sp_namedview_class_init,
  78             NULL,       /* class_finalize */
  79             NULL,       /* class_data */
  80             sizeof(SPNamedView),
  81             16, /* n_preallocs */
  82             (GInstanceInitFunc) sp_namedview_init,
  83             NULL,       /* value_table */
  84         };
  85         namedview_type = g_type_register_static(SP_TYPE_OBJECTGROUP, "SPNamedView", &namedview_info, (GTypeFlags)0);
  86     }
  87     return namedview_type;
  88 }
  89
  90 static void sp_namedview_class_init(SPNamedViewClass * klass)
  91 {
  92     GObjectClass * gobject_class;
  93     SPObjectClass * sp_object_class;
  94
  95     gobject_class = (GObjectClass *) klass;
  96     sp_object_class = (SPObjectClass *) klass;
  97
  98     parent_class = (SPObjectGroupClass*) g_type_class_ref(SP_TYPE_OBJECTGROUP);
  99
 100     sp_object_class->build = sp_namedview_build;
 101     sp_object_class->release = sp_namedview_release;
 102     sp_object_class->set = sp_namedview_set;
 103     sp_object_class->child_added = sp_namedview_child_added;
 104     sp_object_class->remove_child = sp_namedview_remove_child;
 105     sp_object_class->write = sp_namedview_write;
 106 }
 107
 108 static void sp_namedview_init(SPNamedView *nv)
 109 {
 110     nv->editable = TRUE;
 111     nv->showgrid = FALSE;
 112     nv->gridtype = 0;
 113     nv->showguides = TRUE;
 114     nv->showborder = TRUE;
 115     nv->showpageshadow = TRUE;
 116
 117     nv->guides = NULL;
 118     nv->viewcount = 0;
 119     nv->grids = NULL;
 120
 121     nv->default_layer_id = 0;
 122
 123     nv->connector_spacing = defaultConnSpacing;
 124
 125     new (&nv->snap_manager) SnapManager(nv);
 126 }
 127
 128 static void sp_namedview_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)
 129 {
 130     SPNamedView *nv = (SPNamedView *) object;
 131     SPObjectGroup *og = (SPObjectGroup *) object;
 132
 133     if (((SPObjectClass *) (parent_class))->build) {
 134         (* ((SPObjectClass *) (parent_class))->build)(object, document, repr);
 135     }
 136
 137     sp_object_read_attr(object, "inkscape:document-units");
 138     sp_object_read_attr(object, "viewonly");
 139     sp_object_read_attr(object, "showgrid");
 140     sp_object_read_attr(object, "gridtype");
 141     sp_object_read_attr(object, "showguides");
 142     sp_object_read_attr(object, "gridtolerance");
 143     sp_object_read_attr(object, "guidetolerance");
 144     sp_object_read_attr(object, "objecttolerance");
 145     sp_object_read_attr(object, "inkscape:has_abs_tolerance");
 146     sp_object_read_attr(object, "gridoriginx");
 147     sp_object_read_attr(object, "gridoriginy");
 148     sp_object_read_attr(object, "gridspacingx");
 149     sp_object_read_attr(object, "gridspacingy");
 150     sp_object_read_attr(object, "gridanglex");
 151     sp_object_read_attr(object, "gridanglez");
 152     sp_object_read_attr(object, "gridempspacing");
 153     sp_object_read_attr(object, "gridcolor");
 154     sp_object_read_attr(object, "gridempcolor");
 155     sp_object_read_attr(object, "gridopacity");
 156     sp_object_read_attr(object, "gridempopacity");
 157     sp_object_read_attr(object, "guidecolor");
 158     sp_object_read_attr(object, "guideopacity");
 159     sp_object_read_attr(object, "guidehicolor");
 160     sp_object_read_attr(object, "guidehiopacity");
 161     sp_object_read_attr(object, "showborder");
 162     sp_object_read_attr(object, "inkscape:showpageshadow");
 163     sp_object_read_attr(object, "borderlayer");
 164     sp_object_read_attr(object, "bordercolor");
 165     sp_object_read_attr(object, "borderopacity");
 166     sp_object_read_attr(object, "pagecolor");
 167     sp_object_read_attr(object, "inkscape:pageopacity");
 168     sp_object_read_attr(object, "inkscape:pageshadow");
 169     sp_object_read_attr(object, "inkscape:zoom");
 170     sp_object_read_attr(object, "inkscape:cx");
 171     sp_object_read_attr(object, "inkscape:cy");
 172     sp_object_read_attr(object, "inkscape:window-width");
 173     sp_object_read_attr(object, "inkscape:window-height");
 174     sp_object_read_attr(object, "inkscape:window-x");
 175     sp_object_read_attr(object, "inkscape:window-y");
 176     sp_object_read_attr(object, "inkscape:grid-bbox");
 177     sp_object_read_attr(object, "inkscape:guide-bbox");
 178     sp_object_read_attr(object, "inkscape:object-bbox");
 179     sp_object_read_attr(object, "inkscape:grid-points");
 180     sp_object_read_attr(object, "inkscape:guide-points");
 181     sp_object_read_attr(object, "inkscape:object-points");
 182     sp_object_read_attr(object, "inkscape:object-paths");
 183     sp_object_read_attr(object, "inkscape:object-nodes");
 184     sp_object_read_attr(object, "inkscape:current-layer");
 185     sp_object_read_attr(object, "inkscape:connector-spacing");
 186
 187     /* Construct guideline list */
 188
 189     for (SPObject *o = sp_object_first_child(SP_OBJECT(og)) ; o != NULL; o = SP_OBJECT_NEXT(o) ) {
 190         if (SP_IS_GUIDE(o)) {
 191             SPGuide * g = SP_GUIDE(o);
 192             nv->guides = g_slist_prepend(nv->guides, g);
 193             g_object_set(G_OBJECT(g), "color", nv->guidecolor, "hicolor", nv->guidehicolor, NULL);
 194         }
 195     }
 196 }
 197
 198 static void sp_namedview_release(SPObject *object)
 199 {
 200     SPNamedView *namedview = (SPNamedView *) object;
 201
 202     if (namedview->guides) {
 203         g_slist_free(namedview->guides);
 204         namedview->guides = NULL;
 205     }
 206
 207     while (namedview->gridviews) {
 208         gtk_object_unref(GTK_OBJECT(namedview->gridviews->data));
 209         namedview->gridviews = g_slist_remove(namedview->gridviews, namedview->gridviews->data);
 210     }
 211
 212     // delete grids:
 213     while ( namedview->grids ) {
 214         Inkscape::CanvasGrid *gr = (Inkscape::CanvasGrid *)namedview->grids->data;
 215         delete gr;
 216         namedview->grids = g_slist_remove_link(namedview->grids, namedview->grids);
 217     }
 218
 219     if (((SPObjectClass *) parent_class)->release) {
 220         ((SPObjectClass *) parent_class)->release(object);
 221     }
 222
 223     namedview->snap_manager.~SnapManager();
 224 }
 225
 226 static void sp_namedview_set(SPObject *object, unsigned int key, const gchar *value)
 227 {
 228     SPNamedView *nv = SP_NAMEDVIEW(object);
 229     SPUnit const &px = sp_unit_get_by_id(SP_UNIT_PX);
 230
 231     switch (key) {
 232         case SP_ATTR_VIEWONLY:
 233             nv->editable = (!value);
 234             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 235             break;
 236         case SP_ATTR_SHOWGRID:
 237             nv->showgrid = sp_str_to_bool(value);
 238             sp_namedview_setup_grid(nv);
 239             /* Disable grid snaps if the grid is turned off */
 240             nv->snap_manager.grid.setEnabled(nv->showgrid);
 241             nv->snap_manager.axonomgrid.setEnabled(nv->showgrid);
 242             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 243             break;
 244         case SP_ATTR_GRIDTYPE:
 245             nv->gridtype = sp_str_to_bool(value);
 246             sp_namedview_setup_grid(nv);
 247             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 248             break;
 249         case SP_ATTR_SHOWGUIDES:
 250             if (!value) { // show guides if not specified, for backwards compatibility
 251                 nv->showguides = TRUE;
 252             } else {
 253                 nv->showguides = sp_str_to_bool(value);
 254             }
 255             sp_namedview_setup_guides(nv);
 256             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 257             break;
 258         case SP_ATTR_GRIDTOLERANCE:
 259             nv->gridtoleranceunit = &px;
 260             nv->gridtolerance = DEFAULTTOLERANCE;
 261             if (value) {
 262                 sp_nv_read_length(value, SP_UNIT_ABSOLUTE | SP_UNIT_DEVICE, &nv->gridtolerance, &nv->gridtoleranceunit);
 263             }
 264             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 265             break;
 266         case SP_ATTR_GUIDETOLERANCE:
 267             nv->guidetoleranceunit = &px;
 268             nv->guidetolerance = DEFAULTTOLERANCE;
 269             if (value) {
 270                 sp_nv_read_length(value, SP_UNIT_ABSOLUTE | SP_UNIT_DEVICE, &nv->guidetolerance, &nv->guidetoleranceunit);
 271             }
 272             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 273             break;
 274         case SP_ATTR_OBJECTTOLERANCE:
 275             nv->objecttoleranceunit = &px;
 276             nv->objecttolerance = DEFAULTTOLERANCE;
 277             if (value) {
 278                 sp_nv_read_length(value, SP_UNIT_ABSOLUTE | SP_UNIT_DEVICE, &nv->objecttolerance, &nv->objecttoleranceunit);
 279             }
 280             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 281             break;
 282         case SP_ATTR_ABS_TOLERANCE:
 283              if (!value)
 284                  nv->has_abs_tolerance = true;
 285              else
 286                  nv->has_abs_tolerance = (sp_str_to_bool (value) == TRUE);
 287              object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 288              break;
 289         case SP_ATTR_GRIDORIGINX:
 290         case SP_ATTR_GRIDORIGINY:
 291         {
 292             unsigned const d = (key == SP_ATTR_GRIDORIGINY);
 293             nv->gridunit = nv->doc_units;
 294             nv->gridorigin[d] = 0.0;
 295             if (value) {
 296                 sp_nv_read_length(value, SP_UNIT_ABSOLUTE | SP_UNIT_DEVICE, &nv->gridorigin[d], &nv->gridunit);
 297             }
 298             nv->gridorigin[d] = sp_units_get_pixels(nv->gridorigin[d], *(nv->gridunit));
 299             sp_namedview_setup_grid(nv);
 300             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 301             break;
 302         }
 303         case SP_ATTR_GRIDSPACINGX:
 304         case SP_ATTR_GRIDSPACINGY:
 305         {
 306             unsigned const d = (key == SP_ATTR_GRIDSPACINGY);
 307             nv->gridunit = nv->doc_units;
 308             nv->gridspacing[d] = 1.0;
 309             if (value) {
 310                 sp_nv_read_length(value, SP_UNIT_ABSOLUTE | SP_UNIT_DEVICE, &nv->gridspacing[d], &nv->gridunit);
 311             }
 312             nv->gridspacing[d] = sp_units_get_pixels(nv->gridspacing[d], *(nv->gridunit));
 313             sp_namedview_setup_grid(nv);
 314             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 315             break;
 316         }
 317         case SP_ATTR_GRIDANGLEX:
 318         case SP_ATTR_GRIDANGLEZ:
 319         {
 320             unsigned const d = (key == SP_ATTR_GRIDANGLEZ); // 0=X  1=Z
 321             nv->gridangle[d] = 30; // 30 deg default
 322             if (value) {
 323                 nv->gridangle[d] = g_ascii_strtod(value, NULL);
 324             }
 325             sp_namedview_setup_grid(nv);
 326             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 327             break;
 328         }
 329         case SP_ATTR_GRIDCOLOR:
 330             nv->gridcolor = (nv->gridcolor & 0xff) | (DEFAULTGRIDCOLOR & 0xffffff00);
 331             if (value) {
 332                 nv->gridcolor = (nv->gridcolor & 0xff) | sp_svg_read_color(value, nv->gridcolor);
 333             }
 334             sp_namedview_setup_grid(nv);
 335             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 336             break;
 337         case SP_ATTR_GRIDEMPCOLOR:
 338             nv->gridempcolor = (nv->gridempcolor & 0xff) | (DEFAULTGRIDEMPCOLOR & 0xffffff00);
 339             if (value) {
 340                 nv->gridempcolor = (nv->gridempcolor & 0xff) | sp_svg_read_color(value, nv->gridempcolor);
 341             }
 342             sp_namedview_setup_grid(nv);
 343             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 344             break;
 345         case SP_ATTR_GRIDOPACITY:
 346             nv->gridcolor = (nv->gridcolor & 0xffffff00) | (DEFAULTGRIDCOLOR & 0xff);
 347             sp_nv_read_opacity(value, &nv->gridcolor);
 348             sp_namedview_setup_grid(nv);
 349             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 350             break;
 351         case SP_ATTR_GRIDEMPOPACITY:
 352             nv->gridempcolor = (nv->gridempcolor & 0xffffff00) | (DEFAULTGRIDEMPCOLOR & 0xff);
 353             sp_nv_read_opacity(value, &nv->gridempcolor);
 354             sp_namedview_setup_grid(nv);
 355             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 356             break;
 357         case SP_ATTR_GRIDEMPSPACING:
 358             nv->gridempspacing = DEFAULTGRIDEMPSPACING;
 359             if (value != NULL)
 360                 nv->gridempspacing = atoi(value);
 361             sp_namedview_setup_grid(nv);
 362             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 363             break;
 364         case SP_ATTR_GUIDECOLOR:
 365             nv->guidecolor = (nv->guidecolor & 0xff) | (DEFAULTGUIDECOLOR & 0xffffff00);
 366             if (value) {
 367                 nv->guidecolor = (nv->guidecolor & 0xff) | sp_svg_read_color(value, nv->guidecolor);
 368             }
 369             for (GSList *l = nv->guides; l != NULL; l = l->next) {
 370                 g_object_set(G_OBJECT(l->data), "color", nv->guidecolor, NULL);
 371             }
 372             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 373             break;
 374         case SP_ATTR_GUIDEOPACITY:
 375             nv->guidecolor = (nv->guidecolor & 0xffffff00) | (DEFAULTGUIDECOLOR & 0xff);
 376             sp_nv_read_opacity(value, &nv->guidecolor);
 377             for (GSList *l = nv->guides; l != NULL; l = l->next) {
 378                 g_object_set(G_OBJECT(l->data), "color", nv->guidecolor, NULL);
 379             }
 380             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 381             break;
 382         case SP_ATTR_GUIDEHICOLOR:
 383             nv->guidehicolor = (nv->guidehicolor & 0xff) | (DEFAULTGUIDEHICOLOR & 0xffffff00);
 384             if (value) {
 385                 nv->guidehicolor = (nv->guidehicolor & 0xff) | sp_svg_read_color(value, nv->guidehicolor);
 386             }
 387             for (GSList *l = nv->guides; l != NULL; l = l->next) {
 388                 g_object_set(G_OBJECT(l->data), "hicolor", nv->guidehicolor, NULL);
 389             }
 390             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 391             break;
 392         case SP_ATTR_GUIDEHIOPACITY:
 393             nv->guidehicolor = (nv->guidehicolor & 0xffffff00) | (DEFAULTGUIDEHICOLOR & 0xff);
 394             sp_nv_read_opacity(value, &nv->guidehicolor);
 395             for (GSList *l = nv->guides; l != NULL; l = l->next) {
 396                 g_object_set(G_OBJECT(l->data), "hicolor", nv->guidehicolor, NULL);
 397             }
 398             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 399             break;
 400         case SP_ATTR_SHOWBORDER:
 401             nv->showborder = (value) ? sp_str_to_bool (value) : TRUE;
 402             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 403             break;
 404         case SP_ATTR_BORDERLAYER:
 405             nv->borderlayer = SP_BORDER_LAYER_BOTTOM;
 406             if (value && !strcasecmp(value, "true")) nv->borderlayer = SP_BORDER_LAYER_TOP;
 407             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 408             break;
 409         case SP_ATTR_BORDERCOLOR:
 410             nv->bordercolor = (nv->bordercolor & 0xff) | (DEFAULTBORDERCOLOR & 0xffffff00);
 411             if (value) {
 412                 nv->bordercolor = (nv->bordercolor & 0xff) | sp_svg_read_color (value, nv->bordercolor);
 413             }
 414             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 415             break;
 416         case SP_ATTR_BORDEROPACITY:
 417             nv->bordercolor = (nv->bordercolor & 0xffffff00) | (DEFAULTBORDERCOLOR & 0xff);
 418             sp_nv_read_opacity(value, &nv->bordercolor);
 419             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 420             break;
 421         case SP_ATTR_PAGECOLOR:
 422             nv->pagecolor = (nv->pagecolor & 0xff) | (DEFAULTPAGECOLOR & 0xffffff00);
 423             if (value) {
 424                 nv->pagecolor = (nv->pagecolor & 0xff) | sp_svg_read_color(value, nv->pagecolor);
 425             }
 426             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 427             break;
 428         case SP_ATTR_INKSCAPE_PAGEOPACITY:
 429             nv->pagecolor = (nv->pagecolor & 0xffffff00) | (DEFAULTPAGECOLOR & 0xff);
 430             sp_nv_read_opacity(value, &nv->pagecolor);
 431             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 432             break;
 433         case SP_ATTR_INKSCAPE_PAGESHADOW:
 434             nv->pageshadow = value? atoi(value) : 2; // 2 is the default
 435             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 436             break;
 437         case SP_ATTR_SHOWPAGESHADOW:
 438             nv->showpageshadow = (value) ? sp_str_to_bool(value) : TRUE;
 439             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 440             break;
 441         case SP_ATTR_INKSCAPE_ZOOM:
 442             nv->zoom = value ? g_ascii_strtod(value, NULL) : 0; // zero means not set
 443             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 444             break;
 445         case SP_ATTR_INKSCAPE_CX:
 446             nv->cx = value ? g_ascii_strtod(value, NULL) : HUGE_VAL; // HUGE_VAL means not set
 447             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 448             break;
 449         case SP_ATTR_INKSCAPE_CY:
 450             nv->cy = value ? g_ascii_strtod(value, NULL) : HUGE_VAL; // HUGE_VAL means not set
 451             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 452             break;
 453         case SP_ATTR_INKSCAPE_WINDOW_WIDTH:
 454             nv->window_width = value? atoi(value) : -1; // -1 means not set
 455             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 456             break;
 457         case SP_ATTR_INKSCAPE_WINDOW_HEIGHT:
 458             nv->window_height = value ? atoi(value) : -1; // -1 means not set
 459             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 460             break;
 461         case SP_ATTR_INKSCAPE_WINDOW_X:
 462             nv->window_x = value ? atoi(value) : -1; // -1 means not set
 463             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 464             break;
 465         case SP_ATTR_INKSCAPE_WINDOW_Y:
 466             nv->window_y = value ? atoi(value) : -1; // -1 means not set
 467             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 468             break;
 469         case SP_ATTR_INKSCAPE_GRID_BBOX:
 470             nv->snap_manager.grid.setSnapTo(Inkscape::Snapper::BBOX_POINT, value ? sp_str_to_bool(value) : TRUE);
 471             nv->snap_manager.axonomgrid.setSnapTo(Inkscape::Snapper::BBOX_POINT, value ? sp_str_to_bool(value) : TRUE);
 472             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 473             break;
 474         case SP_ATTR_INKSCAPE_GRID_POINTS:
 475             nv->snap_manager.grid.setSnapTo(Inkscape::Snapper::SNAP_POINT, value ? sp_str_to_bool(value) : FALSE);
 476             nv->snap_manager.axonomgrid.setSnapTo(Inkscape::Snapper::SNAP_POINT, value ? sp_str_to_bool(value) : FALSE);
 477             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 478             break;
 479         case SP_ATTR_INKSCAPE_GUIDE_BBOX:
 480             nv->snap_manager.guide.setSnapTo(Inkscape::Snapper::BBOX_POINT, value ? sp_str_to_bool(value) : TRUE);
 481             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 482             break;
 483         case SP_ATTR_INKSCAPE_GUIDE_POINTS:
 484             nv->snap_manager.guide.setSnapTo(Inkscape::Snapper::SNAP_POINT, value ? sp_str_to_bool(value) : FALSE);
 485             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 486             break;
 487         case SP_ATTR_INKSCAPE_OBJECT_BBOX:
 488             nv->snap_manager.object.setSnapTo(Inkscape::Snapper::BBOX_POINT, (value) ? sp_str_to_bool(value) : FALSE);
 489             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 490             break;
 491         case SP_ATTR_INKSCAPE_OBJECT_POINTS:
 492             nv->snap_manager.object.setSnapTo(Inkscape::Snapper::SNAP_POINT, (value) ? sp_str_to_bool(value) : FALSE);
 493             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 494             break;
 495         case SP_ATTR_INKSCAPE_OBJECT_PATHS:
 496             nv->snap_manager.object.setSnapToPaths(value ? sp_str_to_bool(value) : TRUE);
 497             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 498             break;
 499         case SP_ATTR_INKSCAPE_OBJECT_NODES:
 500             nv->snap_manager.object.setSnapToNodes(value ? sp_str_to_bool(value) : TRUE);
 501             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 502             break;
 503         case SP_ATTR_INKSCAPE_CURRENT_LAYER:
 504             nv->default_layer_id = value ? g_quark_from_string(value) : 0;
 505             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 506             break;
 507         case SP_ATTR_INKSCAPE_CONNECTOR_SPACING:
 508             nv->connector_spacing = value ? g_ascii_strtod(value, NULL) :
 509                     defaultConnSpacing;
 510             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 511             break;
 512         case SP_ATTR_INKSCAPE_DOCUMENT_UNITS: {
 513             /* The default unit if the document doesn't override this: e.g. for files saved as
 514              * `plain SVG', or non-inkscape files, or files created by an inkscape 0.40 &
 515              * earlier.
 516              *
 517              * Here we choose `px': useful for screen-destined SVGs, and fewer bug reports
 518              * about "not the same numbers as what's in the SVG file" (at least for documents
 519              * without a viewBox attribute on the root <svg> element).  Similarly, it's also
 520              * the most reliable unit (i.e. least likely to be wrong in different viewing
 521              * conditions) for viewBox-less SVG files given that it's the unit that inkscape
 522              * uses for all coordinates.
 523              *
 524              * For documents that do have a viewBox attribute on the root <svg> element, it
 525              * might be better if we used either viewBox coordinates or if we used the unit of
 526              * say the width attribute of the root <svg> element.  However, these pose problems
 527              * in that they aren't in general absolute units as currently required by
 528              * doc_units.
 529              */
 530             SPUnit const *new_unit = &sp_unit_get_by_id(SP_UNIT_PX);
 531
 532             if (value) {
 533                 SPUnit const *const req_unit = sp_unit_get_by_abbreviation(value);
 534                 if ( req_unit == NULL ) {
 535                     g_warning("Unrecognized unit `%s'", value);
 536                     /* fixme: Document errors should be reported in the status bar or
 537                      * the like (e.g. as per
 538                      * http://www.w3.org/TR/SVG11/implnote.html#ErrorProcessing); g_log
 539                      * should be only for programmer errors. */
 540                 } else if ( req_unit->base == SP_UNIT_ABSOLUTE ||
 541                             req_unit->base == SP_UNIT_DEVICE     ) {
 542                     new_unit = req_unit;
 543                 } else {
 544                     g_warning("Document units must be absolute like `mm', `pt' or `px', but found `%s'",
 545                               value);
 546                     /* fixme: Don't use g_log (see above). */
 547                 }
 548             }
 549             nv->doc_units = new_unit;
 550             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 551             break;
 552         }
 553         default:
 554             if (((SPObjectClass *) (parent_class))->set) {
 555                 ((SPObjectClass *) (parent_class))->set(object, key, value);
 556             }
 557             break;
 558     }
 559 }
 560
 561 static void sp_namedview_child_added(SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *ref)
 562 {
 563 g_message("named view:: child added");
 564
 565     SPNamedView *nv = (SPNamedView *) object;
 566
 567     if (((SPObjectClass *) (parent_class))->child_added) {
 568         (* ((SPObjectClass *) (parent_class))->child_added)(object, child, ref);
 569     }
 570
 571     const gchar *id = child->attribute("id");
 572     if (!strcmp(child->name(), "inkscape:grid")) {
 573         // check for which grid-type
 574         Inkscape::CanvasGrid* addedgrid;
 575         const char * gridtype = child->attribute("type");
 576         if (!gridtype) {
 577             gridtype = "xygrid"; // use this as default gridtype when none is specified
 578             child->setAttribute("type", gridtype);
 579         }
 580         addedgrid = Inkscape::CanvasXYGrid::NewGrid( (SPDesktop*) nv->views->data, child, gridtype);
 581         if (addedgrid) {
 582             nv->grids = g_slist_append(nv->grids, addedgrid);
 583             addedgrid->show();
 584         }
 585     } else {
 586         SPObject *no = object->document->getObjectById(id);
 587         g_assert(SP_IS_OBJECT(no));
 588
 589         if (SP_IS_GUIDE(no)) {
 590             SPGuide *g = (SPGuide *) no;
 591             nv->guides = g_slist_prepend(nv->guides, g);
 592             g_object_set(G_OBJECT(g), "color", nv->guidecolor, "hicolor", nv->guidehicolor, NULL);
 593             if (nv->editable) {
 594                 for (GSList *l = nv->views; l != NULL; l = l->next) {
 595                     sp_guide_show(g, static_cast<SPDesktop*>(l->data)->guides, (GCallback) sp_dt_guide_event);
 596                     if (static_cast<SPDesktop*>(l->data)->guides_active)
 597                         sp_guide_sensitize(g,
 598                                            sp_desktop_canvas(static_cast<SPDesktop*> (l->data)),
 599                                            TRUE);
 600                     if (nv->showguides) {
 601                         for (GSList *v = SP_GUIDE(g)->views; v != NULL; v = v->next) {
 602                             sp_canvas_item_show(SP_CANVAS_ITEM(v->data));
 603                         }
 604                     } else {
 605                         for (GSList *v = SP_GUIDE(g)->views; v != NULL; v = v->next) {
 606                             sp_canvas_item_hide(SP_CANVAS_ITEM(v->data));
 607                         }
 608                     }
 609                 }
 610             }
 611         }
 612     }
 613 }
 614
 615 static void sp_namedview_remove_child(SPObject *object, Inkscape::XML::Node *child)
 616 {
 617 g_message("named view:: child removed");
 618     SPNamedView *nv = (SPNamedView *) object;
 619
 620     if (!strcmp(child->name(), "inkscape:grid")) {
 621         for ( GSList *iter = nv->grids ; iter ; iter = iter->next ) {
 622             Inkscape::CanvasGrid *gr = (Inkscape::CanvasGrid *)iter->data;
 623             if ( gr->repr == child ) {
 624                 delete gr;
 625                 nv->grids = g_slist_remove_link(nv->grids, iter);
 626                 break;
 627             }
 628         }
 629     } else {
 630         GSList **ref = &nv->guides;
 631         for ( GSList *iter = nv->guides ; iter ; iter = iter->next ) {
 632             if ( SP_OBJECT_REPR((SPObject *)iter->data) == child ) {
 633                 *ref = iter->next;
 634                 iter->next = NULL;
 635                 g_slist_free_1(iter);
 636                 break;
 637             }
 638             ref = &iter->next;
 639         }
 640     }
 641
 642     if (((SPObjectClass *) (parent_class))->remove_child) {
 643         (* ((SPObjectClass *) (parent_class))->remove_child)(object, child);
 644     }
 645 }
 646
 647 static Inkscape::XML::Node *sp_namedview_write(SPObject *object, Inkscape::XML::Node *repr, guint flags)
 648 {
 649     if ( ( flags & SP_OBJECT_WRITE_EXT ) &&
 650          repr != SP_OBJECT_REPR(object) )
 651     {
 652         if (repr) {
 653             repr->mergeFrom(SP_OBJECT_REPR(object), "id");
 654         } else {
 655             repr = SP_OBJECT_REPR(object)->duplicate();
 656         }
 657     }
 658
 659     return repr;
 660 }
 661
 662 void SPNamedView::show(SPDesktop *desktop)
 663 {
 664     for (GSList *l = guides; l != NULL; l = l->next) {
 665         sp_guide_show(SP_GUIDE(l->data), desktop->guides, (GCallback) sp_dt_guide_event);
 666         if (desktop->guides_active) {
 667             sp_guide_sensitize(SP_GUIDE(l->data), sp_desktop_canvas(desktop), TRUE);
 668         }
 669         if (showguides) {
 670             for (GSList *v = SP_GUIDE(l->data)->views; v != NULL; v = v->next) {
 671                 sp_canvas_item_show(SP_CANVAS_ITEM(v->data));
 672             }
 673         } else {
 674             for (GSList *v = SP_GUIDE(l->data)->views; v != NULL; v = v->next) {
 675                 sp_canvas_item_hide(SP_CANVAS_ITEM(v->data));
 676             }
 677         }
 678     }
 679
 680     views = g_slist_prepend(views, desktop);
 681
 682     SPCanvasItem * item = sp_canvas_item_new(sp_desktop_grid(desktop), INKSCAPE_TYPE_CXYGRID, NULL);
 683     // since we're keeping a copy, we need to bump up the ref count
 684     gtk_object_ref(GTK_OBJECT(item));
 685     gridviews = g_slist_prepend(gridviews, item);
 686
 687     item = sp_canvas_item_new(sp_desktop_grid(desktop), SP_TYPE_CAXONOMGRID, NULL);
 688     // since we're keeping a copy, we need to bump up the ref count
 689     gtk_object_ref(GTK_OBJECT(item));
 690     gridviews = g_slist_prepend(gridviews, item);
 691
 692     // generate grids specified in SVG:
 693     Inkscape::XML::Node *repr = SP_OBJECT_REPR(this);
 694     if (repr) {
 695         for (Inkscape::XML::Node * child = repr->firstChild() ; child != NULL; child = child->next() ) {
 696             if (!strcmp(child->name(), "inkscape:grid")) {
 697                 Inkscape::CanvasXYGrid* addedgrid = new Inkscape::CanvasXYGrid(desktop, child);
 698                 if (addedgrid) {
 699                     grids = g_slist_append(grids, addedgrid);
 700                     addedgrid->enabled = true;
 701                     addedgrid->show();
 702                 }
 703             }
 704         }
 705     }
 706
 707
 708     sp_namedview_setup_grid(this);
 709 }
 710
 711 #define MIN_ONSCREEN_DISTANCE 50
 712
 713 /*
 714  * Restores window geometry from the document settings
 715  */
 716 void sp_namedview_window_from_document(SPDesktop *desktop)
 717 {
 718     SPNamedView *nv = desktop->namedview;
 719     gint save_geometry = prefs_get_int_attribute("options.savewindowgeometry", "value", 0);
 720
 721     // restore window size and position
 722     if (save_geometry) {
 723         gint w = MIN(gdk_screen_width(), nv->window_width);
 724         gint h = MIN(gdk_screen_height(), nv->window_height);
 725         gint x = MIN(gdk_screen_width() - MIN_ONSCREEN_DISTANCE, nv->window_x);
 726         gint y = MIN(gdk_screen_height() - MIN_ONSCREEN_DISTANCE, nv->window_y);
 727         if (w>0 && h>0 && x>0 && y>0) {
 728             x = MIN(gdk_screen_width() - w, x);
 729             y = MIN(gdk_screen_height() - h, y);
 730         }
 731         if (w>0 && h>0)
 732             desktop->setWindowSize(w, h);
 733         if (x>0 && y>0)
 734             desktop->setWindowPosition(NR::Point(x, y));
 735     }
 736
 737     // restore zoom and view
 738     if (nv->zoom != 0 && nv->zoom != HUGE_VAL && !isNaN(nv->zoom)
 739         && nv->cx != HUGE_VAL && !isNaN(nv->cx)
 740         && nv->cy != HUGE_VAL && !isNaN(nv->cy)) {
 741         desktop->zoom_absolute(nv->cx, nv->cy, nv->zoom);
 742     } else if (sp_desktop_document(desktop)) { // document without saved zoom, zoom to its page
 743         desktop->zoom_page();
 744     }
 745
 746     // cancel any history of zooms up to this point
 747     if (desktop->zooms_past) {
 748         g_list_free(desktop->zooms_past);
 749         desktop->zooms_past = NULL;
 750     }
 751 }
 752
 753 void sp_namedview_update_layers_from_document (SPDesktop *desktop)
 754 {
 755     SPObject *layer = NULL;
 756     SPDocument *document = desktop->doc();
 757     SPNamedView *nv = desktop->namedview;
 758     if ( nv->default_layer_id != 0 ) {
 759         layer = document->getObjectById(g_quark_to_string(nv->default_layer_id));
 760     }
 761     // don't use that object if it's not at least group
 762     if ( !layer || !SP_IS_GROUP(layer) ) {
 763         layer = NULL;
 764     }
 765     // if that didn't work out, look for the topmost layer
 766     if (!layer) {
 767         SPObject *iter = sp_object_first_child(SP_DOCUMENT_ROOT(document));
 768         for ( ; iter ; iter = SP_OBJECT_NEXT(iter) ) {
 769             if (desktop->isLayer(iter)) {
 770                 layer = iter;
 771             }
 772         }
 773     }
 774     if (layer) {
 775         desktop->setCurrentLayer(layer);
 776     }
 777
 778     // FIXME: find a better place to do this
 779     desktop->event_log->updateUndoVerbs();
 780 }
 781
 782 void sp_namedview_document_from_window(SPDesktop *desktop)
 783 {
 784     gint save_geometry = prefs_get_int_attribute("options.savewindowgeometry", "value", 0);
 785     Inkscape::XML::Node *view = SP_OBJECT_REPR(desktop->namedview);
 786     NR::Rect const r = desktop->get_display_area();
 787
 788     // saving window geometry is not undoable
 789     bool saved = sp_document_get_undo_sensitive(sp_desktop_document(desktop));
 790     sp_document_set_undo_sensitive(sp_desktop_document(desktop), false);
 791
 792     sp_repr_set_svg_double(view, "inkscape:zoom", desktop->current_zoom());
 793     sp_repr_set_svg_double(view, "inkscape:cx", r.midpoint()[NR::X]);
 794     sp_repr_set_svg_double(view, "inkscape:cy", r.midpoint()[NR::Y]);
 795
 796     if (save_geometry) {
 797         gint w, h, x, y;
 798         desktop->getWindowGeometry(x, y, w, h);
 799         sp_repr_set_int(view, "inkscape:window-width", w);
 800         sp_repr_set_int(view, "inkscape:window-height", h);
 801         sp_repr_set_int(view, "inkscape:window-x", x);
 802         sp_repr_set_int(view, "inkscape:window-y", y);
 803     }
 804
 805     view->setAttribute("inkscape:current-layer", SP_OBJECT_ID(desktop->currentLayer()));
 806
 807     // restore undoability
 808     sp_document_set_undo_sensitive(sp_desktop_document(desktop), saved);
 809 }
 810
 811 void SPNamedView::hide(SPDesktop const *desktop)
 812 {
 813     g_assert(desktop != NULL);
 814     g_assert(g_slist_find(views, desktop));
 815
 816     for (GSList *l = guides; l != NULL; l = l->next) {
 817         sp_guide_hide(SP_GUIDE(l->data), sp_desktop_canvas(desktop));
 818     }
 819
 820     views = g_slist_remove(views, desktop);
 821
 822     GSList *l;
 823     for (l = gridviews; l != NULL; l = l->next) {
 824         if (! l->data) {
 825             continue;
 826         }
 827         SPCanvasItem *item = static_cast<SPCanvasItem*>(l->data);
 828
 829         if (item->canvas == sp_desktop_canvas(desktop)) {
 830             sp_canvas_item_hide(SP_CANVAS_ITEM(l->data));
 831             gtk_object_unref(GTK_OBJECT(l->data));
 832             gridviews = g_slist_remove(gridviews, l->data);
 833         }
 834     }
 835
 836     // delete grids:
 837     while ( grids ) {
 838         Inkscape::CanvasGrid *gr = (Inkscape::CanvasGrid *)grids->data;
 839         delete gr;
 840         grids = g_slist_remove_link(grids, grids);
 841     }
 842 }
 843
 844 void SPNamedView::activateGuides(gpointer desktop, gboolean active)
 845 {
 846     g_assert(desktop != NULL);
 847     g_assert(g_slist_find(views, desktop));
 848
 849     SPDesktop *dt = static_cast<SPDesktop*>(desktop);
 850
 851     for (GSList *l = guides; l != NULL; l = l->next) {
 852         sp_guide_sensitize(SP_GUIDE(l->data), sp_desktop_canvas(dt), active);
 853     }
 854 }
 855
 856 static void sp_namedview_setup_guides(SPNamedView *nv)
 857 {
 858     for (GSList *l = nv->guides; l != NULL; l = l->next) {
 859         if (nv->showguides) {
 860             for (GSList *v = SP_GUIDE(l->data)->views; v != NULL; v = v->next) {
 861                 sp_canvas_item_show(SP_CANVAS_ITEM(v->data));
 862             }
 863         } else {
 864             for (GSList *v = SP_GUIDE(l->data)->views; v != NULL; v = v->next) {
 865                 sp_canvas_item_hide(SP_CANVAS_ITEM(v->data));
 866             }
 867         }
 868     }
 869 }
 870
 871 void sp_namedview_toggle_guides(SPDocument *doc, Inkscape::XML::Node *repr)
 872 {
 873     unsigned int v;
 874     unsigned int set = sp_repr_get_boolean(repr, "showguides", &v);
 875     if (!set) { // hide guides if not specified, for backwards compatibility
 876         v = FALSE;
 877     } else {
 878         v = !v;
 879     }
 880
 881     bool saved = sp_document_get_undo_sensitive(doc);
 882     sp_document_set_undo_sensitive(doc, false);
 883
 884     sp_repr_set_boolean(repr, "showguides", v);
 885
 886     doc->rroot->setAttribute("sodipodi:modified", "true");
 887     sp_document_set_undo_sensitive(doc, saved);
 888 }
 889
 890 void sp_namedview_toggle_grid(SPDocument *doc, Inkscape::XML::Node *repr)
 891 {
 892     unsigned int v;
 893     sp_repr_get_boolean(repr, "showgrid", &v);
 894     v = !v;
 895
 896     bool saved = sp_document_get_undo_sensitive(doc);
 897     sp_document_set_undo_sensitive(doc, false);
 898
 899     sp_repr_set_boolean(repr, "showgrid", v);
 900
 901     doc->rroot->setAttribute("sodipodi:modified", "true");
 902     sp_document_set_undo_sensitive(doc, saved);
 903 }
 904
 905 void sp_namedview_set_gridtype(unsigned int type, SPDocument *doc, Inkscape::XML::Node *repr)
 906 {
 907     bool saved = sp_document_get_undo_sensitive(doc);
 908     sp_document_set_undo_sensitive(doc, false);
 909
 910     sp_repr_set_int(repr, "gridtype", (gint)type);
 911
 912     doc->rroot->setAttribute("sodipodi:modified", "true");
 913     sp_document_set_undo_sensitive(doc, saved);
 914 }
 915
 916 static void sp_namedview_setup_grid(SPNamedView *nv)
 917 {
 918     for (GSList *l = nv->gridviews; l != NULL; l = l->next) {
 919         sp_namedview_setup_grid_item(nv, SP_CANVAS_ITEM(l->data));
 920     }
 921 }
 922
 923 static void sp_namedview_setup_grid_item(SPNamedView *nv, SPCanvasItem *item)
 924 {
 925     bool btype = SP_IS_CAXONOMGRID(GTK_OBJECT(item));
 926
 927     if ( nv->showgrid && (nv->gridtype == btype) ) {
 928         sp_canvas_item_show(item);
 929     } else {
 930         sp_canvas_item_hide(item);
 931     }
 932
 933     sp_canvas_item_set((GtkObject *) item,
 934                        "color", nv->gridcolor,
 935                        "originx", nv->gridorigin[NR::X],
 936                        "originy", nv->gridorigin[NR::Y],
 937                        "spacingy", nv->gridspacing[NR::Y],
 938                        "empcolor", nv->gridempcolor,
 939                        "empspacing", nv->gridempspacing,
 940                        NULL);
 941     if (!btype){
 942         // CXYGRID
 943         sp_canvas_item_set((GtkObject *) item,
 944                            "spacingx", nv->gridspacing[NR::X],
 945                            NULL);
 946     } else {
 947         // CAXONOMGRID
 948         sp_canvas_item_set((GtkObject *) item,
 949                            "anglex", nv->gridangle[0],
 950                            "anglez", nv->gridangle[1],
 951                            NULL);
 952     }
 953 }
 954
 955
 956 gchar const *SPNamedView::getName() const
 957 {
 958     SPException ex;
 959     SP_EXCEPTION_INIT(&ex);
 960     return sp_object_getAttribute(SP_OBJECT(this), "id", &ex);
 961 }
 962
 963 guint SPNamedView::getViewCount()
 964 {
 965     return ++viewcount;
 966 }
 967
 968 GSList const *SPNamedView::getViewList() const
 969 {
 970     return views;
 971 }
 972
 973 /* This should be moved somewhere */
 974
 975 static gboolean sp_str_to_bool(const gchar *str)
 976 {
 977     if (str) {
 978         if (!g_strcasecmp(str, "true") ||
 979             !g_strcasecmp(str, "yes") ||
 980             !g_strcasecmp(str, "y") ||
 981             (atoi(str) != 0)) {
 982             return TRUE;
 983         }
 984     }
 985
 986     return FALSE;
 987 }
 988
 989 /* fixme: Collect all these length parsing methods and think common sane API */
 990
 991 static gboolean sp_nv_read_length(const gchar *str, guint base, gdouble *val, const SPUnit **unit)
 992 {
 993     if (!str) {
 994         return FALSE;
 995     }
 996
 997     gchar *u;
 998     gdouble v = g_ascii_strtod(str, &u);
 999     if (!u) {
1000         return FALSE;
1001     }
1002     while (isspace(*u)) {
1003         u += 1;
1004     }
1005
1006     if (!*u) {
1007         /* No unit specified - keep default */
1008         *val = v;
1009         return TRUE;
1010     }
1011
1012     if (base & SP_UNIT_DEVICE) {
1013         if (u[0] && u[1] && !isalnum(u[2]) && !strncmp(u, "px", 2)) {
1014             *unit = &sp_unit_get_by_id(SP_UNIT_PX);
1015             *val = v;
1016             return TRUE;
1017         }
1018     }
1019
1020     if (base & SP_UNIT_ABSOLUTE) {
1021         if (!strncmp(u, "pt", 2)) {
1022             *unit = &sp_unit_get_by_id(SP_UNIT_PT);
1023         } else if (!strncmp(u, "mm", 2)) {
1024             *unit = &sp_unit_get_by_id(SP_UNIT_MM);
1025         } else if (!strncmp(u, "cm", 2)) {
1026             *unit = &sp_unit_get_by_id(SP_UNIT_CM);
1027         } else if (!strncmp(u, "m", 1)) {
1028             *unit = &sp_unit_get_by_id(SP_UNIT_M);
1029         } else if (!strncmp(u, "in", 2)) {
1030             *unit = &sp_unit_get_by_id(SP_UNIT_IN);
1031         } else {
1032             return FALSE;
1033         }
1034         *val = v;
1035         return TRUE;
1036     }
1037
1038     return FALSE;
1039 }
1040
1041 static gboolean sp_nv_read_opacity(const gchar *str, guint32 *color)
1042 {
1043     if (!str) {
1044         return FALSE;
1045     }
1046
1047     gchar *u;
1048     gdouble v = g_ascii_strtod(str, &u);
1049     if (!u) {
1050         return FALSE;
1051     }
1052     v = CLAMP(v, 0.0, 1.0);
1053
1054     *color = (*color & 0xffffff00) | (guint32) floor(v * 255.9999);
1055
1056     return TRUE;
1057 }
1058
1059 SPNamedView *sp_document_namedview(SPDocument *document, const gchar *id)
1060 {
1061     g_return_val_if_fail(document != NULL, NULL);
1062
1063     SPObject *nv = sp_item_group_get_child_by_name((SPGroup *) document->root, NULL, "sodipodi:namedview");
1064     g_assert(nv != NULL);
1065
1066     if (id == NULL) {
1067         return (SPNamedView *) nv;
1068     }
1069
1070     while (nv && strcmp(nv->id, id)) {
1071         nv = sp_item_group_get_child_by_name((SPGroup *) document->root, nv, "sodipodi:namedview");
1072     }
1073
1074     return (SPNamedView *) nv;
1075 }
1076
1077 /**
1078  * Returns namedview's default metric.
1079  */
1080 SPMetric SPNamedView::getDefaultMetric() const
1081 {
1082     if (doc_units) {
1083         return sp_unit_get_metric(doc_units);
1084     } else {
1085         return SP_PT;
1086     }
1087 }
1088
1089 /*
1090   Local Variables:
1091   mode:c++
1092   c-file-style:"stroustrup"
1093   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
1094   indent-tabs-mode:nil
1095   fill-column:99
1096   End:
1097 */
1098 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtab