src/widgets/font-selector.cpp

   1 #define __SP_FONT_SELECTOR_C__
   2
   3 /*
   4  * Font selection widgets
   5  *
   6  * Authors:
   7  *   Chris Lahey <clahey@ximian.com>
   8  *   Lauris Kaplinski <lauris@kaplinski.com>
   9  *   bulia byak <buliabyak@users.sf.net>
  10  *
  11  * Copyright (C) 1999-2001 Ximian, Inc.
  12  * Copyright (C) 2002 Lauris Kaplinski
  13  *
  14  * Released under GNU GPL, read the file 'COPYING' for more information
  15  */
  16
  17 #ifdef HAVE_CONFIG_H
  18 # include "config.h"
  19 #endif
  20
  21 #include <libnr/nr-blit.h>
  22 #include <libnrtype/font-instance.h>
  23 #include <libnrtype/raster-glyph.h>
  24 #include <libnrtype/RasterFont.h>
  25 #include <libnrtype/TextWrapper.h>
  26 #include <libnrtype/one-glyph.h>
  27 #include <libnrtype/font-lister.h>
  28
  29 #include <gtk/gtk.h>
  30 #include <gtk/gtkframe.h>
  31 #include <gtk/gtkscrolledwindow.h>
  32 #include <gtk/gtkclist.h>
  33 #include <gtk/gtkvbox.h>
  34 #include <gtk/gtkcombo.h>
  35 #include <gtk/gtkentry.h>
  36 #include <gtk/gtkdrawingarea.h>
  37
  38 #include "../display/nr-plain-stuff-gdk.h"
  39 #include <glibmm/i18n.h>
  40
  41 #include "../desktop.h"
  42 #include "font-selector.h"
  43
  44 /* SPFontSelector */
  45
  46 struct SPFontSelector
  47 {
  48     GtkHBox hbox;
  49
  50     unsigned int block_emit : 1;
  51
  52     GtkWidget *family;
  53     GtkWidget *style;
  54     GtkWidget *size;
  55
  56     GtkWidget *family_treeview;
  57     GtkWidget *style_treeview;
  58
  59     NRNameList families;
  60     NRStyleList styles;
  61     int familyidx;
  62     int styleidx;
  63     gfloat fontsize;
  64     bool fontsize_dirty;
  65     font_instance *font;
  66 };
  67
  68
  69 struct SPFontSelectorClass
  70 {
  71     GtkHBoxClass parent_class;
  72
  73     void (* font_set) (SPFontSelector *fsel, font_instance *font);
  74 };
  75
  76 enum {
  77     FONT_SET,
  78     LAST_SIGNAL
  79 };
  80
  81 static void sp_font_selector_class_init         (SPFontSelectorClass    *c);
  82 static void sp_font_selector_init               (SPFontSelector         *fsel);
  83 static void sp_font_selector_destroy            (GtkObject              *object);
  84
  85 static void sp_font_selector_family_select_row  (GtkTreeSelection       *selection,
  86                                                  SPFontSelector         *fsel);
  87
  88 static void sp_font_selector_style_select_row   (GtkTreeSelection       *selection,
  89                                                  SPFontSelector         *fsel);
  90
  91 static void sp_font_selector_size_changed       (GtkComboBox            *combobox,
  92                                                  SPFontSelector         *fsel);
  93
  94 static void sp_font_selector_emit_set           (SPFontSelector         *fsel);
  95
  96 namespace {
  97     const char *sizes[] = {
  98         "4", "6", "8", "9", "10", "11", "12", "13", "14",
  99         "16", "18", "20", "22", "24", "28",
 100         "32", "36", "40", "48", "56", "64", "72", "144",
 101         NULL
 102     };
 103 }
 104
 105 static GtkHBoxClass *fs_parent_class = NULL;
 106 static guint fs_signals[LAST_SIGNAL] = { 0 };
 107
 108 GtkType sp_font_selector_get_type()
 109 {
 110     static GtkType type = 0;
 111     if (!type) {
 112         static const GtkTypeInfo info = {
 113             "SPFontSelector",
 114             sizeof(SPFontSelector),
 115             sizeof(SPFontSelectorClass),
 116             (GtkClassInitFunc) sp_font_selector_class_init,
 117             (GtkObjectInitFunc) sp_font_selector_init,
 118             NULL, NULL, NULL
 119         };
 120         type = gtk_type_unique(GTK_TYPE_HBOX, &info);
 121     }
 122     return type;
 123 }
 124
 125 static void sp_font_selector_class_init(SPFontSelectorClass *c)
 126 {
 127     GtkObjectClass *object_class = (GtkObjectClass *) c;
 128
 129     fs_parent_class = (GtkHBoxClass* )gtk_type_class(GTK_TYPE_HBOX);
 130
 131     fs_signals[FONT_SET] = gtk_signal_new ("font_set",
 132                                            GTK_RUN_FIRST,
 133                                            GTK_CLASS_TYPE(object_class),
 134                                            GTK_SIGNAL_OFFSET(SPFontSelectorClass, font_set),
 135                                            gtk_marshal_NONE__POINTER,
 136                                            GTK_TYPE_NONE,
 137                                            1, GTK_TYPE_POINTER);
 138
 139         object_class->destroy = sp_font_selector_destroy;
 140 }
 141
 142 static void sp_font_selector_init(SPFontSelector *fsel)
 143 {
 144         gtk_box_set_homogeneous(GTK_BOX(fsel), TRUE);
 145         gtk_box_set_spacing(GTK_BOX(fsel), 4);
 146
 147         /* Family frame */
 148         GtkWidget *f = gtk_frame_new(_("Font family"));
 149         gtk_widget_show (f);
 150         gtk_box_pack_start (GTK_BOX(fsel), f, TRUE, TRUE, 0);
 151
 152         GtkWidget *sw = gtk_scrolled_window_new(NULL, NULL);
 153         gtk_widget_show(sw);
 154         gtk_container_set_border_width(GTK_CONTAINER (sw), 4);
 155         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(sw), GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
 156         gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (sw), GTK_SHADOW_IN);
 157         gtk_container_add(GTK_CONTAINER(f), sw);
 158
 159         Inkscape::FontLister* fontlister = Inkscape::FontLister::get_instance();
 160
 161         fsel->family_treeview = gtk_tree_view_new ();
 162         GtkTreeViewColumn *column = gtk_tree_view_column_new ();
 163         GtkCellRenderer *cell = gtk_cell_renderer_text_new ();
 164         gtk_tree_view_column_pack_start (column, cell, FALSE);
 165         gtk_tree_view_column_set_attributes (column, cell, "text", 0, NULL);
 166         gtk_tree_view_append_column (GTK_TREE_VIEW(fsel->family_treeview), column);
 167         gtk_tree_view_set_headers_visible (GTK_TREE_VIEW(fsel->family_treeview), FALSE);
 168         Glib::RefPtr<Gtk::ListStore> store = fontlister->get_font_list();
 169         gtk_tree_view_set_model (GTK_TREE_VIEW(fsel->family_treeview), GTK_TREE_MODEL (Glib::unwrap (store)));
 170         gtk_container_add(GTK_CONTAINER(sw), fsel->family_treeview);
 171         gtk_widget_show_all (sw);
 172
 173         GtkTreeSelection *selection = gtk_tree_view_get_selection (GTK_TREE_VIEW(fsel->family_treeview));
 174         g_signal_connect (G_OBJECT(selection), "changed", G_CALLBACK (sp_font_selector_family_select_row), fsel);
 175         g_object_set_data (G_OBJECT(fsel), "family-treeview", fsel->family_treeview);
 176
 177
 178         /* Style frame */
 179         f = gtk_frame_new(_("Style"));
 180         gtk_widget_show(f);
 181         gtk_box_pack_start(GTK_BOX (fsel), f, TRUE, TRUE, 0);
 182
 183         GtkWidget *vb = gtk_vbox_new(FALSE, 4);
 184         gtk_widget_show(vb);
 185         gtk_container_set_border_width(GTK_CONTAINER (vb), 4);
 186         gtk_container_add(GTK_CONTAINER(f), vb);
 187
 188         sw = gtk_scrolled_window_new(NULL, NULL);
 189         gtk_widget_show(sw);
 190         gtk_container_set_border_width(GTK_CONTAINER (sw), 4);
 191         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW (sw), GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
 192         gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (sw), GTK_SHADOW_IN);
 193         gtk_box_pack_start(GTK_BOX (vb), sw, TRUE, TRUE, 0);
 194
 195         fsel->style_treeview = gtk_tree_view_new ();
 196         column = gtk_tree_view_column_new ();
 197         cell = gtk_cell_renderer_text_new ();
 198         gtk_tree_view_column_pack_start (column, cell, FALSE);
 199         gtk_tree_view_column_set_attributes (column, cell, "text", 0, NULL);
 200         gtk_tree_view_append_column (GTK_TREE_VIEW(fsel->style_treeview), column);
 201         gtk_tree_view_set_headers_visible (GTK_TREE_VIEW(fsel->style_treeview), FALSE);
 202         gtk_container_add(GTK_CONTAINER(sw), fsel->style_treeview);
 203         gtk_widget_show_all (sw);
 204
 205         selection = gtk_tree_view_get_selection (GTK_TREE_VIEW(fsel->style_treeview));
 206         g_signal_connect (G_OBJECT(selection), "changed", G_CALLBACK (sp_font_selector_style_select_row), fsel);
 207
 208         GtkWidget *hb = gtk_hbox_new(FALSE, 4);
 209         gtk_widget_show(hb);
 210         gtk_box_pack_start(GTK_BOX(vb), hb, FALSE, FALSE, 0);
 211
 212         fsel->size = gtk_combo_box_entry_new_text ();
 213         gtk_widget_set_size_request(fsel->size, 90, -1);
 214         g_signal_connect (G_OBJECT(fsel->size), "changed", G_CALLBACK (sp_font_selector_size_changed), fsel);
 215         gtk_box_pack_end (GTK_BOX(hb), fsel->size, FALSE, FALSE, 0);
 216
 217         GtkWidget *l = gtk_label_new(_("Font size:"));
 218         gtk_widget_show_all (l);
 219         gtk_box_pack_end(GTK_BOX (hb), l, FALSE, FALSE, 0);
 220
 221         for (unsigned int n = 0; sizes[n]; ++n)
 222             {
 223                 gtk_combo_box_append_text (GTK_COMBO_BOX(fsel->size), sizes[n]);
 224             }
 225
 226         gtk_widget_show_all (fsel->size);
 227
 228         fsel->familyidx = 0;
 229         fsel->styleidx = 0;
 230         fsel->fontsize = 10.0;
 231         fsel->fontsize_dirty = false;
 232         fsel->font = NULL;
 233 }
 234
 235 static void sp_font_selector_destroy(GtkObject *object)
 236 {
 237     SPFontSelector *fsel = SP_FONT_SELECTOR (object);
 238
 239     if (fsel->font) {
 240         fsel->font->Unref();
 241         fsel->font = NULL;
 242     }
 243
 244     if (fsel->families.length > 0) {
 245         nr_name_list_release(&fsel->families);
 246         fsel->families.length = 0;
 247     }
 248
 249     if (fsel->styles.length > 0) {
 250         nr_style_list_release(&fsel->styles);
 251         fsel->styles.length = 0;
 252     }
 253
 254     if (GTK_OBJECT_CLASS(fs_parent_class)->destroy) {
 255         GTK_OBJECT_CLASS(fs_parent_class)->destroy(object);
 256     }
 257 }
 258
 259 static void sp_font_selector_family_select_row(GtkTreeSelection *selection,
 260                                                SPFontSelector *fsel)
 261 {
 262     GtkTreeIter   iter;
 263     GtkTreeModel *model;
 264     GtkListStore *store;
 265     GtkTreePath  *path;
 266     GList        *list=0;
 267
 268     if (!gtk_tree_selection_get_selected (selection, &model, &iter)) return;
 269
 270     path = gtk_tree_model_get_path (model, &iter);
 271     gtk_tree_model_get (model, &iter, 1, &list, -1);
 272     fsel->familyidx = gtk_tree_path_get_indices (path)[0];
 273     fsel->styleidx = 0;
 274
 275     store = gtk_list_store_new (1, G_TYPE_STRING);
 276
 277     for ( ; list ; list = list->next )
 278     {
 279         gtk_list_store_append (store, &iter);
 280         gtk_list_store_set (store, &iter, 0, (char*)list->data, -1);
 281     }
 282
 283     gtk_tree_view_set_model (GTK_TREE_VIEW (fsel->style_treeview), GTK_TREE_MODEL (store));
 284     path = gtk_tree_path_new ();
 285     gtk_tree_path_append_index (path, 0);
 286     gtk_tree_selection_select_path (gtk_tree_view_get_selection (GTK_TREE_VIEW (fsel->style_treeview)), path);
 287     gtk_tree_path_free (path);
 288 }
 289
 290 static void sp_font_selector_style_select_row (GtkTreeSelection *selection,
 291                                                SPFontSelector   *fsel)
 292 {
 293     GtkTreeModel *model;
 294     GtkTreePath  *path;
 295     GtkTreeIter   iter;
 296
 297     if (!gtk_tree_selection_get_selected (selection, &model, &iter)) return;
 298
 299     path = gtk_tree_model_get_path (model, &iter);
 300     fsel->styleidx = gtk_tree_path_get_indices (path)[0];
 301
 302     if (!fsel->block_emit)
 303     {
 304         sp_font_selector_emit_set (fsel);
 305     }
 306 }
 307
 308 static void sp_font_selector_size_changed (GtkComboBox *cbox, SPFontSelector *fsel)
 309 {
 310 #if GTK_CHECK_VERSION(2,6,0)
 311     char *sstr = gtk_combo_box_get_active_text (GTK_COMBO_BOX (fsel->size));
 312 #else // GTK_CHECK_VERSION(2,6,0)
 313     GtkTreeModel *model = gtk_combo_box_get_model (GTK_COMBO_BOX (fsel->size));
 314     GtkTreeIter iter;
 315     char *sstr = NULL;
 316
 317     if (gtk_combo_box_get_active_iter (GTK_COMBO_BOX (fsel->size), &iter) && model)
 318         gtk_tree_model_get (model, &iter, 0, &sstr, -1);
 319 #endif // GTK_CHECK_VERSION(2,6,0)
 320     gfloat old_size = fsel->fontsize;
 321     fsel->fontsize = MAX(atof(sstr), 0.1);
 322     if ( fabs(fsel->fontsize-old_size) > 0.001)
 323     {
 324         fsel->fontsize_dirty = true;
 325     }
 326
 327     sp_font_selector_emit_set (fsel);
 328
 329     free (sstr);
 330 }
 331
 332 static void sp_font_selector_emit_set (SPFontSelector *fsel)
 333 {
 334     font_instance *font;
 335
 336     GtkTreeSelection *selection_family;
 337     GtkTreeSelection *selection_style;
 338     GtkTreeModel     *model_family;
 339     GtkTreeModel     *model_style;
 340     GtkTreeIter       iter_family;
 341     GtkTreeIter       iter_style;
 342     char             *family=0, *style=0;
 343
 344     //We need to check this here since most GtkTreeModel operations are not atomic
 345     //See GtkListStore documenation, Chapter "Atomic Operations" --mderezynski
 346
 347     model_family = gtk_tree_view_get_model (GTK_TREE_VIEW (fsel->family_treeview));
 348     if (!model_family) return;
 349     model_style = gtk_tree_view_get_model (GTK_TREE_VIEW (fsel->style_treeview));
 350     if (!model_style) return;
 351
 352     selection_family = gtk_tree_view_get_selection (GTK_TREE_VIEW (fsel->family_treeview));
 353     selection_style = gtk_tree_view_get_selection (GTK_TREE_VIEW (fsel->style_treeview));
 354
 355     if (!gtk_tree_selection_get_selected (selection_family, NULL, &iter_family)) return;
 356     if (!gtk_tree_selection_get_selected (selection_style, NULL, &iter_style)) return;
 357
 358     gtk_tree_model_get (model_family, &iter_family, 0, &family, -1);
 359     gtk_tree_model_get (model_style, &iter_style, 0, &style, -1);
 360
 361     if ((!family) || (!style)) return;
 362
 363     font = (font_factory::Default())->FaceFromDescr (family, style);
 364
 365     // FIXME: when a text object uses non-available font, font==NULL and we can't set size
 366     // (and the size shown in the widget is invalid). To fix, here we must always get some
 367     // default font, exactly the same as sptext uses for on-canvas display, so that
 368     // font!=NULL ever.
 369     if (font != fsel->font || ( font && fsel->fontsize_dirty ) ) {
 370         if ( font ) {
 371             font->Ref();
 372         }
 373         if ( fsel->font ) {
 374             fsel->font->Unref();
 375         }
 376         fsel->font = font;
 377         gtk_signal_emit(GTK_OBJECT(fsel), fs_signals[FONT_SET], fsel->font);
 378     }
 379     fsel->fontsize_dirty = false;
 380     if (font) {
 381         font->Unref();
 382     }
 383     font = NULL;
 384 }
 385
 386 GtkWidget *sp_font_selector_new()
 387 {
 388     SPFontSelector *fsel = (SPFontSelector*) gtk_type_new(SP_TYPE_FONT_SELECTOR);
 389
 390     return (GtkWidget *) fsel;
 391 }
 392
 393 void sp_font_selector_set_font (SPFontSelector *fsel, font_instance *font, double size)
 394 {
 395     if (font && (fsel->font != font || size != fsel->fontsize))
 396     {
 397             gchar family[256];
 398             font->Family (family, 256);
 399
 400             Gtk::TreePath path;
 401
 402             try {
 403                 path = Inkscape::FontLister::get_instance()->get_row_for_font (family);
 404             } catch (...) {
 405                 return;
 406             }
 407
 408             fsel->block_emit = TRUE;
 409             gtk_tree_selection_select_path (gtk_tree_view_get_selection (GTK_TREE_VIEW (fsel->family_treeview)), path.gobj());
 410             gtk_tree_view_scroll_to_cell (GTK_TREE_VIEW (fsel->family_treeview), path.gobj(), NULL, TRUE, 0.5, 0.5);
 411             fsel->block_emit = FALSE;
 412
 413             unsigned int i = path[0];
 414
 415             gchar descr[256];
 416             font->Name(descr, 256);
 417
 418             GList *list = 0;
 419             GtkTreeIter iter;
 420             GtkTreeModel *model = gtk_tree_view_get_model (GTK_TREE_VIEW(fsel->family_treeview));
 421             gtk_tree_model_get_iter (model, &iter, path.gobj());
 422             gtk_tree_model_get (model, &iter, 1, &list, -1);
 423
 424             std::string descr_best (descr);
 425             descr_best += ((char*)list->data);
 426
 427             PangoFontDescription *descr_ = pango_font_description_from_string(descr);
 428             PangoFontDescription *best_ = pango_font_description_from_string(descr_best.c_str());
 429
 430             unsigned int best_i = 0;
 431
 432             for ( ; list ; list = list->next)
 433             {
 434                 std::string descr_try (descr);
 435                 descr_try += ((char*)list->data);
 436                 PangoFontDescription *try_ = pango_font_description_from_string(descr_try.c_str());
 437                 if (pango_font_description_better_match (descr_, best_, try_))
 438                 {
 439                     pango_font_description_free (best_);
 440                     best_ = pango_font_description_from_string (descr_try.c_str ());
 441                     best_i = i;
 442                 }
 443                 pango_font_description_free(try_);
 444                 ++i;
 445             }
 446
 447             GtkTreePath *path_c = gtk_tree_path_new ();
 448             gtk_tree_path_append_index (path_c, best_i);
 449             gtk_tree_selection_select_path (gtk_tree_view_get_selection (GTK_TREE_VIEW (fsel->style_treeview)), path_c);
 450             gtk_tree_view_scroll_to_cell (GTK_TREE_VIEW (fsel->style_treeview), path_c, NULL, TRUE, 0.5, 0.5);
 451
 452             if (size != fsel->fontsize)
 453             {
 454                 gchar s[8];
 455                 g_snprintf (s, 8, "%.5g", size); // UI, so printf is ok
 456                 gtk_entry_set_text (GTK_ENTRY (GTK_BIN(fsel->size)->child), s);
 457                 fsel->fontsize = size;
 458             }
 459     }
 460 }
 461
 462 font_instance* sp_font_selector_get_font(SPFontSelector *fsel)
 463 {
 464     if (fsel->font) {
 465         fsel->font->Ref();
 466     }
 467
 468     return fsel->font;
 469 }
 470
 471 double sp_font_selector_get_size(SPFontSelector *fsel)
 472 {
 473     return fsel->fontsize;
 474 }
 475
 476 /* SPFontPreview */
 477
 478 struct SPFontPreview
 479 {
 480     GtkDrawingArea darea;
 481
 482     font_instance *font;
 483     raster_font *rfont;
 484     gchar *phrase;
 485     unsigned long rgba;
 486 };
 487
 488 struct SPFontPreviewClass
 489 {
 490     GtkDrawingAreaClass parent_class;
 491 };
 492
 493 static void sp_font_preview_class_init(SPFontPreviewClass *c);
 494 static void sp_font_preview_init(SPFontPreview *fsel);
 495 static void sp_font_preview_destroy(GtkObject *object);
 496
 497 void sp_font_preview_size_request(GtkWidget *widget, GtkRequisition *req);
 498 static gint sp_font_preview_expose(GtkWidget *widget, GdkEventExpose *event);
 499
 500 static GtkDrawingAreaClass *fp_parent_class = NULL;
 501
 502 GtkType sp_font_preview_get_type()
 503 {
 504     static GtkType type = 0;
 505     if (!type) {
 506         static const GtkTypeInfo info = {
 507             "SPFontPreview",
 508             sizeof (SPFontPreview),
 509             sizeof (SPFontPreviewClass),
 510             (GtkClassInitFunc) sp_font_preview_class_init,
 511             (GtkObjectInitFunc) sp_font_preview_init,
 512             NULL, NULL, NULL
 513         };
 514         type = gtk_type_unique (GTK_TYPE_DRAWING_AREA, &info);
 515     }
 516     return type;
 517 }
 518
 519 static void sp_font_preview_class_init (SPFontPreviewClass *c)
 520 {
 521     GtkObjectClass *object_class = (GtkObjectClass *) c;
 522     GtkWidgetClass *widget_class = (GtkWidgetClass *) c;
 523
 524     fp_parent_class = (GtkDrawingAreaClass*) gtk_type_class(GTK_TYPE_DRAWING_AREA);
 525
 526     object_class->destroy = sp_font_preview_destroy;
 527
 528     widget_class->size_request = sp_font_preview_size_request;
 529     widget_class->expose_event = sp_font_preview_expose;
 530 }
 531
 532 static void sp_font_preview_init(SPFontPreview *fprev)
 533 {
 534     fprev->rgba = 0x000000ff;
 535 }
 536
 537 static void sp_font_preview_destroy(GtkObject *object)
 538 {
 539     SPFontPreview *fprev = SP_FONT_PREVIEW (object);
 540
 541     if (fprev->rfont) {
 542         fprev->rfont->Unref();
 543         fprev->rfont = NULL;
 544     }
 545
 546     if (fprev->font) {
 547         fprev->font->Unref();
 548         fprev->font = NULL;
 549     }
 550
 551     g_free(fprev->phrase);
 552     fprev->phrase = NULL;
 553
 554     if (GTK_OBJECT_CLASS (fp_parent_class)->destroy) {
 555         GTK_OBJECT_CLASS (fp_parent_class)->destroy(object);
 556     }
 557 }
 558
 559 void sp_font_preview_size_request(GtkWidget *widget, GtkRequisition *req)
 560 {
 561     req->width = 256;
 562     req->height = 32;
 563 }
 564
 565 #define SPFP_MAX_LEN 64
 566
 567 static gint sp_font_preview_expose(GtkWidget *widget, GdkEventExpose *event)
 568 {
 569     SPFontPreview *fprev = SP_FONT_PREVIEW(widget);
 570
 571     if (GTK_WIDGET_DRAWABLE (widget)) {
 572         if (fprev->rfont) {
 573
 574             int glyphs[SPFP_MAX_LEN];
 575             double hpos[SPFP_MAX_LEN];
 576
 577             font_instance *tface = fprev->rfont->daddy;
 578
 579             double theSize = NR_MATRIX_DF_EXPANSION (&fprev->rfont->style.transform);
 580
 581             gchar const *p;
 582             if (fprev->phrase) {
 583                 p = fprev->phrase;
 584             } else {
 585                 /* TRANSLATORS: Test string used in text and font dialog (when no
 586                  * text has been entered) to get a preview of the font.  Choose
 587                  * some representative characters that users of your locale will be
 588                  * interested in. */
 589                 p = _("AaBbCcIiPpQq12369$\342\202\254\302\242?.;/()");
 590             }
 591             int len = 0;
 592
 593             NRRect bbox;
 594             bbox.x0 = bbox.y0 = bbox.x1 = bbox.y1 = 0.0;
 595
 596             text_wrapper* str_text=new text_wrapper;
 597             str_text->SetDefaultFont(tface);
 598             str_text->AppendUTF8(p,-1);
 599             if ( str_text->uni32_length > 0 ) {
 600                 str_text->DoLayout();
 601                 if ( str_text->glyph_length > 0 ) {
 602                     PangoFont *curPF = NULL;
 603                     font_instance *curF = NULL;
 604                     for (int i = 0; i < str_text->glyph_length && i < SPFP_MAX_LEN; i++) {
 605                         if ( str_text->glyph_text[i].font != curPF ) {
 606                             curPF = str_text->glyph_text[i].font;
 607                             if (curF) {
 608                                 curF->Unref();
 609                             }
 610                             curF = NULL;
 611                             if ( curPF ) {
 612                                 PangoFontDescription* pfd = pango_font_describe(curPF);
 613                                 curF = (font_factory::Default())->Face(pfd);
 614                                 pango_font_description_free(pfd);
 615                             }
 616                         }
 617                         NR::Point base_pt(str_text->glyph_text[i].x, str_text->glyph_text[i].y);
 618                         base_pt *= theSize;
 619
 620                         glyphs[len] = str_text->glyph_text[i].gl;
 621                         hpos[len] = base_pt[0];
 622                         len++;
 623                         if ( curF ) {
 624                             NR::Rect nbbox = curF->BBox(str_text->glyph_text[i].gl);
 625                             bbox.x0 = MIN(bbox.x0, base_pt[NR::X] + theSize * (nbbox.min())[0]);
 626                             bbox.y0 = MIN(bbox.y0, base_pt[NR::Y] - theSize * (nbbox.max())[1]);
 627                             bbox.x1 = MAX(bbox.x1, base_pt[NR::X] + theSize * (nbbox.max())[0]);
 628                             bbox.y1 = MAX(bbox.y1, base_pt[NR::Y] - theSize * (nbbox.min())[1]);
 629                         }
 630                     }
 631                     if ( curF ) {
 632                         curF->Unref();
 633                     }
 634                 }
 635             }
 636
 637             // XXX: FIXME: why does this code ignore adv.y
 638             /*                  while (p && *p && (len < SPFP_MAX_LEN)) {
 639                                 unsigned int unival;
 640                                 NRRect gbox;
 641                                 unival = g_utf8_get_char (p);
 642                                 glyphs[len] =  tface->MapUnicodeChar( unival);
 643                                 hpos[len] = (int)px;
 644                                 NR::Point adv = fprev->rfont->Advance(glyphs[len]);
 645                                 fprev->rfont->BBox( glyphs[len], &gbox);
 646                                 bbox.x0 = MIN (px + gbox.x0, bbox.x0);
 647                                 bbox.y0 = MIN (py + gbox.y0, bbox.y0);
 648                                 bbox.x1 = MAX (px + gbox.x1, bbox.x1);
 649                                 bbox.y1 = MAX (py + gbox.y1, bbox.y1);
 650                                 px += adv[NR::X];
 651                                 len += 1;
 652                                 p = g_utf8_next_char (p);
 653                                 }*/
 654
 655             float startx = (widget->allocation.width - (bbox.x1 - bbox.x0)) / 2;
 656             float starty = widget->allocation.height - (widget->allocation.height - (bbox.y1 - bbox.y0)) / 2 - bbox.y1;
 657
 658             for (int y = event->area.y; y < event->area.y + event->area.height; y += 64) {
 659                 for (int x = event->area.x; x < event->area.x + event->area.width; x += 64) {
 660                     NRPixBlock pb, m;
 661                     int x0 = x;
 662                     int y0 = y;
 663                     int x1 = MIN(x0 + 64, event->area.x + event->area.width);
 664                     int y1 = MIN(y0 + 64, event->area.y + event->area.height);
 665                     guchar *ps = nr_pixelstore_16K_new (TRUE, 0xff);
 666                     nr_pixblock_setup_extern(&pb, NR_PIXBLOCK_MODE_R8G8B8, x0, y0, x1, y1, ps, 3 * (x1 - x0), FALSE, FALSE);
 667                     nr_pixblock_setup_fast(&m, NR_PIXBLOCK_MODE_A8, x0, y0, x1, y1, TRUE);
 668                     pb.empty = FALSE;
 669
 670                     PangoFont *curPF = NULL;
 671                     font_instance *curF = NULL;
 672                     raster_font *curRF = NULL;
 673                     for (int i=0; i < len; i++) {
 674                         if ( str_text->glyph_text[i].font != curPF ) {
 675                             curPF=str_text->glyph_text[i].font;
 676                             if ( curF ) {
 677                                 curF->Unref();
 678                             }
 679                             curF = NULL;
 680                             if ( curPF ) {
 681                                 PangoFontDescription* pfd = pango_font_describe(curPF);
 682                                 curF=(font_factory::Default())->Face(pfd);
 683                                 pango_font_description_free(pfd);
 684                             }
 685                             if ( curF ) {
 686                                 if ( curRF ) {
 687                                     curRF->Unref();
 688                                 }
 689                                 curRF = NULL;
 690                                 curRF = curF->RasterFont(fprev->rfont->style);
 691                             }
 692                         }
 693                         raster_glyph *g = (curRF) ? curRF->GetGlyph(glyphs[i]) : NULL;
 694                         if ( g ) {
 695                             g->Blit(NR::Point(hpos[i] + startx, starty), m);
 696                         }
 697                     }
 698                     if (curRF) {
 699                         curRF->Unref();
 700                     }
 701                     if (curF) {
 702                         curF->Unref();
 703                     }
 704
 705                     nr_blit_pixblock_mask_rgba32(&pb, &m, fprev->rgba);
 706                     gdk_draw_rgb_image(widget->window, widget->style->black_gc,
 707                                        x0, y0, x1 - x0, y1 - y0,
 708                                        GDK_RGB_DITHER_NONE, NR_PIXBLOCK_PX (&pb), pb.rs);
 709                     nr_pixblock_release(&m);
 710                     nr_pixblock_release(&pb);
 711                     nr_pixelstore_16K_free(ps);
 712                 }
 713             }
 714
 715             delete str_text;
 716
 717         } else {
 718             nr_gdk_draw_gray_garbage(widget->window, widget->style->black_gc,
 719                                      event->area.x, event->area.y,
 720                                      event->area.width, event->area.height);
 721         }
 722     }
 723
 724     return TRUE;
 725 }
 726
 727 GtkWidget * sp_font_preview_new()
 728 {
 729     GtkWidget *w = (GtkWidget*) gtk_type_new(SP_TYPE_FONT_PREVIEW);
 730
 731     return w;
 732 }
 733
 734 void sp_font_preview_set_font(SPFontPreview *fprev, font_instance *font, SPFontSelector *fsel)
 735 {
 736         if (font)
 737         {
 738             font->Ref();
 739         }
 740
 741         if (fprev->font)
 742         {
 743             fprev->font->Unref();
 744         }
 745
 746         fprev->font = font;
 747
 748         if (fprev->rfont)
 749         {
 750             fprev->rfont->Unref();
 751             fprev->rfont=NULL;
 752         }
 753
 754         if (fprev->font)
 755         {
 756             NRMatrix flip;
 757             nr_matrix_set_scale (&flip, fsel->fontsize, -fsel->fontsize);
 758             fprev->rfont = fprev->font->RasterFont(flip, 0);
 759         }
 760
 761         if (GTK_WIDGET_DRAWABLE (fprev)) gtk_widget_queue_draw (GTK_WIDGET (fprev));
 762 }
 763
 764 void sp_font_preview_set_rgba32(SPFontPreview *fprev, guint32 rgba)
 765 {
 766     fprev->rgba = rgba;
 767     if (GTK_WIDGET_DRAWABLE (fprev)) {
 768         gtk_widget_queue_draw (GTK_WIDGET (fprev));
 769     }
 770 }
 771
 772 void sp_font_preview_set_phrase(SPFontPreview *fprev, const gchar *phrase)
 773 {
 774     g_free (fprev->phrase);
 775     if (phrase) {
 776         fprev->phrase = g_strdup (phrase);
 777     } else {
 778         fprev->phrase = NULL;
 779     }
 780     if (GTK_WIDGET_DRAWABLE(fprev)) {
 781         gtk_widget_queue_draw (GTK_WIDGET (fprev));
 782     }
 783 }
 784
 785
 786 /*
 787   Local Variables:
 788   mode:c++
 789   c-file-style:"stroustrup"
 790   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
 791   indent-tabs-mode:nil
 792   fill-column:99
 793   End:
 794 */
 795 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :