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  *   Johan Engelen <j.b.c.engelen@ewi.utwente.nl>
  11  *
  12  * Copyright (C) 1999-2001 Ximian, Inc.
  13  * Copyright (C) 2002 Lauris Kaplinski
  14  * Copyright (C) -2007 Authors
  15  *
  16  * Released under GNU GPL, read the file 'COPYING' for more information
  17  */
  18
  19 #ifdef HAVE_CONFIG_H
  20 # include "config.h"
  21 #endif
  22
  23 #include <libnr/nr-blit.h>
  24 #include <libnrtype/font-instance.h>
  25 #include <libnrtype/raster-glyph.h>
  26 #include <libnrtype/RasterFont.h>
  27 #include <libnrtype/TextWrapper.h>
  28 #include <libnrtype/one-glyph.h>
  29 #include <libnrtype/font-lister.h>
  30
  31 #include <gtk/gtk.h>
  32 #include <gtk/gtkframe.h>
  33 #include <gtk/gtkscrolledwindow.h>
  34 #include <gtk/gtkclist.h>
  35 #include <gtk/gtkvbox.h>
  36 #include <gtk/gtkcombo.h>
  37 #include <gtk/gtkentry.h>
  38 #include <gtk/gtkdrawingarea.h>
  39
  40 #include "../display/nr-plain-stuff-gdk.h"
  41 #include <glibmm/i18n.h>
  42
  43 #include "../desktop.h"
  44 #include "font-selector.h"
  45
  46 /* SPFontSelector */
  47
  48 struct SPFontSelector
  49 {
  50     GtkHBox hbox;
  51
  52     unsigned int block_emit : 1;
  53
  54     GtkWidget *family;
  55     GtkWidget *style;
  56     GtkWidget *size;
  57
  58     GtkWidget *family_treeview;
  59     GtkWidget *style_treeview;
  60
  61     NRNameList families;
  62     NRStyleList styles;
  63     int familyidx;
  64     int styleidx;
  65     gfloat fontsize;
  66     bool fontsize_dirty;
  67     font_instance *font;
  68 };
  69
  70
  71 struct SPFontSelectorClass
  72 {
  73     GtkHBoxClass parent_class;
  74
  75     void (* font_set) (SPFontSelector *fsel, font_instance *font);
  76 };
  77
  78 enum {
  79     FONT_SET,
  80     LAST_SIGNAL
  81 };
  82
  83 static void sp_font_selector_class_init         (SPFontSelectorClass    *c);
  84 static void sp_font_selector_init               (SPFontSelector         *fsel);
  85 static void sp_font_selector_destroy            (GtkObject              *object);
  86
  87 static void sp_font_selector_family_select_row  (GtkTreeSelection       *selection,
  88                                                  SPFontSelector         *fsel);
  89
  90 static void sp_font_selector_style_select_row   (GtkTreeSelection       *selection,
  91                                                  SPFontSelector         *fsel);
  92
  93 static void sp_font_selector_size_changed       (GtkComboBox            *combobox,
  94                                                  SPFontSelector         *fsel);
  95
  96 static void sp_font_selector_emit_set           (SPFontSelector         *fsel);
  97
  98 namespace {
  99     const char *sizes[] = {
 100         "4", "6", "8", "9", "10", "11", "12", "13", "14",
 101         "16", "18", "20", "22", "24", "28",
 102         "32", "36", "40", "48", "56", "64", "72", "144",
 103         NULL
 104     };
 105 }
 106
 107 static GtkHBoxClass *fs_parent_class = NULL;
 108 static guint fs_signals[LAST_SIGNAL] = { 0 };
 109
 110 GtkType sp_font_selector_get_type()
 111 {
 112     static GtkType type = 0;
 113     if (!type) {
 114         static const GtkTypeInfo info = {
 115             "SPFontSelector",
 116             sizeof(SPFontSelector),
 117             sizeof(SPFontSelectorClass),
 118             (GtkClassInitFunc) sp_font_selector_class_init,
 119             (GtkObjectInitFunc) sp_font_selector_init,
 120             NULL, NULL, NULL
 121         };
 122         type = gtk_type_unique(GTK_TYPE_HBOX, &info);
 123     }
 124     return type;
 125 }
 126
 127 static void sp_font_selector_class_init(SPFontSelectorClass *c)
 128 {
 129     GtkObjectClass *object_class = (GtkObjectClass *) c;
 130
 131     fs_parent_class = (GtkHBoxClass* )gtk_type_class(GTK_TYPE_HBOX);
 132
 133     fs_signals[FONT_SET] = gtk_signal_new ("font_set",
 134                                            GTK_RUN_FIRST,
 135                                            GTK_CLASS_TYPE(object_class),
 136                                            GTK_SIGNAL_OFFSET(SPFontSelectorClass, font_set),
 137                                            gtk_marshal_NONE__POINTER,
 138                                            GTK_TYPE_NONE,
 139                                            1, GTK_TYPE_POINTER);
 140
 141         object_class->destroy = sp_font_selector_destroy;
 142 }
 143
 144 static void sp_font_selector_init(SPFontSelector *fsel)
 145 {
 146         gtk_box_set_homogeneous(GTK_BOX(fsel), TRUE);
 147         gtk_box_set_spacing(GTK_BOX(fsel), 4);
 148
 149         /* Family frame */
 150         GtkWidget *f = gtk_frame_new(_("Font family"));
 151         gtk_widget_show (f);
 152         gtk_box_pack_start (GTK_BOX(fsel), f, TRUE, TRUE, 0);
 153
 154         GtkWidget *sw = gtk_scrolled_window_new(NULL, NULL);
 155         gtk_widget_show(sw);
 156         gtk_container_set_border_width(GTK_CONTAINER (sw), 4);
 157         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(sw), GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
 158         gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (sw), GTK_SHADOW_IN);
 159         gtk_container_add(GTK_CONTAINER(f), sw);
 160
 161         Inkscape::FontLister* fontlister = Inkscape::FontLister::get_instance();
 162
 163         fsel->family_treeview = gtk_tree_view_new ();
 164         GtkTreeViewColumn *column = gtk_tree_view_column_new ();
 165         GtkCellRenderer *cell = gtk_cell_renderer_text_new ();
 166         gtk_tree_view_column_pack_start (column, cell, FALSE);
 167         gtk_tree_view_column_set_attributes (column, cell, "text", 0, NULL);
 168         gtk_tree_view_append_column (GTK_TREE_VIEW(fsel->family_treeview), column);
 169         gtk_tree_view_set_headers_visible (GTK_TREE_VIEW(fsel->family_treeview), FALSE);
 170         Glib::RefPtr<Gtk::ListStore> store = fontlister->get_font_list();
 171         gtk_tree_view_set_model (GTK_TREE_VIEW(fsel->family_treeview), GTK_TREE_MODEL (Glib::unwrap (store)));
 172         gtk_container_add(GTK_CONTAINER(sw), fsel->family_treeview);
 173         gtk_widget_show_all (sw);
 174
 175         GtkTreeSelection *selection = gtk_tree_view_get_selection (GTK_TREE_VIEW(fsel->family_treeview));
 176         g_signal_connect (G_OBJECT(selection), "changed", G_CALLBACK (sp_font_selector_family_select_row), fsel);
 177         g_object_set_data (G_OBJECT(fsel), "family-treeview", fsel->family_treeview);
 178
 179
 180         /* Style frame */
 181         f = gtk_frame_new(_("Style"));
 182         gtk_widget_show(f);
 183         gtk_box_pack_start(GTK_BOX (fsel), f, TRUE, TRUE, 0);
 184
 185         GtkWidget *vb = gtk_vbox_new(FALSE, 4);
 186         gtk_widget_show(vb);
 187         gtk_container_set_border_width(GTK_CONTAINER (vb), 4);
 188         gtk_container_add(GTK_CONTAINER(f), vb);
 189
 190         sw = gtk_scrolled_window_new(NULL, NULL);
 191         gtk_widget_show(sw);
 192         gtk_container_set_border_width(GTK_CONTAINER (sw), 4);
 193         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW (sw), GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
 194         gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (sw), GTK_SHADOW_IN);
 195         gtk_box_pack_start(GTK_BOX (vb), sw, TRUE, TRUE, 0);
 196
 197         fsel->style_treeview = gtk_tree_view_new ();
 198         column = gtk_tree_view_column_new ();
 199         cell = gtk_cell_renderer_text_new ();
 200         gtk_tree_view_column_pack_start (column, cell, FALSE);
 201         gtk_tree_view_column_set_attributes (column, cell, "text", 0, NULL);
 202         gtk_tree_view_append_column (GTK_TREE_VIEW(fsel->style_treeview), column);
 203         gtk_tree_view_set_headers_visible (GTK_TREE_VIEW(fsel->style_treeview), FALSE);
 204         gtk_container_add(GTK_CONTAINER(sw), fsel->style_treeview);
 205         gtk_widget_show_all (sw);
 206
 207         selection = gtk_tree_view_get_selection (GTK_TREE_VIEW(fsel->style_treeview));
 208         g_signal_connect (G_OBJECT(selection), "changed", G_CALLBACK (sp_font_selector_style_select_row), fsel);
 209
 210         GtkWidget *hb = gtk_hbox_new(FALSE, 4);
 211         gtk_widget_show(hb);
 212         gtk_box_pack_start(GTK_BOX(vb), hb, FALSE, FALSE, 0);
 213
 214         fsel->size = gtk_combo_box_entry_new_text ();
 215         gtk_widget_set_size_request(fsel->size, 90, -1);
 216         g_signal_connect (G_OBJECT(fsel->size), "changed", G_CALLBACK (sp_font_selector_size_changed), fsel);
 217         gtk_box_pack_end (GTK_BOX(hb), fsel->size, FALSE, FALSE, 0);
 218
 219         GtkWidget *l = gtk_label_new(_("Font size:"));
 220         gtk_widget_show_all (l);
 221         gtk_box_pack_end(GTK_BOX (hb), l, FALSE, FALSE, 0);
 222
 223         for (unsigned int n = 0; sizes[n]; ++n)
 224             {
 225                 gtk_combo_box_append_text (GTK_COMBO_BOX(fsel->size), sizes[n]);
 226             }
 227
 228         gtk_widget_show_all (fsel->size);
 229
 230         fsel->familyidx = 0;
 231         fsel->styleidx = 0;
 232         fsel->fontsize = 10.0;
 233         fsel->fontsize_dirty = false;
 234         fsel->font = NULL;
 235 }
 236
 237 static void sp_font_selector_destroy(GtkObject *object)
 238 {
 239     SPFontSelector *fsel = SP_FONT_SELECTOR (object);
 240
 241     if (fsel->font) {
 242         fsel->font->Unref();
 243         fsel->font = NULL;
 244     }
 245
 246     if (fsel->families.length > 0) {
 247         nr_name_list_release(&fsel->families);
 248         fsel->families.length = 0;
 249     }
 250
 251     if (fsel->styles.length > 0) {
 252         nr_style_list_release(&fsel->styles);
 253         fsel->styles.length = 0;
 254     }
 255
 256     if (GTK_OBJECT_CLASS(fs_parent_class)->destroy) {
 257         GTK_OBJECT_CLASS(fs_parent_class)->destroy(object);
 258     }
 259 }
 260
 261 static void sp_font_selector_family_select_row(GtkTreeSelection *selection,
 262                                                SPFontSelector *fsel)
 263 {
 264     GtkTreeIter   iter;
 265     GtkTreeModel *model;
 266     GtkListStore *store;
 267     GtkTreePath  *path;
 268     GList        *list=0;
 269
 270     if (!gtk_tree_selection_get_selected (selection, &model, &iter)) return;
 271
 272     path = gtk_tree_model_get_path (model, &iter);
 273     gtk_tree_model_get (model, &iter, 1, &list, -1);
 274     fsel->familyidx = gtk_tree_path_get_indices (path)[0];
 275     fsel->styleidx = 0;
 276
 277     store = gtk_list_store_new (1, G_TYPE_STRING);
 278
 279     for ( ; list ; list = list->next )
 280     {
 281         gtk_list_store_append (store, &iter);
 282         gtk_list_store_set (store, &iter, 0, (char*)list->data, -1);
 283     }
 284
 285     gtk_tree_view_set_model (GTK_TREE_VIEW (fsel->style_treeview), GTK_TREE_MODEL (store));
 286     path = gtk_tree_path_new ();
 287     gtk_tree_path_append_index (path, 0);
 288     gtk_tree_selection_select_path (gtk_tree_view_get_selection (GTK_TREE_VIEW (fsel->style_treeview)), path);
 289     gtk_tree_path_free (path);
 290 }
 291
 292 static void sp_font_selector_style_select_row (GtkTreeSelection *selection,
 293                                                SPFontSelector   *fsel)
 294 {
 295     GtkTreeModel *model;
 296     GtkTreePath  *path;
 297     GtkTreeIter   iter;
 298
 299     if (!gtk_tree_selection_get_selected (selection, &model, &iter)) return;
 300
 301     path = gtk_tree_model_get_path (model, &iter);
 302     fsel->styleidx = gtk_tree_path_get_indices (path)[0];
 303
 304     if (!fsel->block_emit)
 305     {
 306         sp_font_selector_emit_set (fsel);
 307     }
 308 }
 309
 310 static void sp_font_selector_size_changed (GtkComboBox *cbox, SPFontSelector *fsel)
 311 {
 312 #if GTK_CHECK_VERSION(2,6,0)
 313     char *sstr = gtk_combo_box_get_active_text (GTK_COMBO_BOX (fsel->size));
 314 #else // GTK_CHECK_VERSION(2,6,0)
 315     GtkTreeModel *model = gtk_combo_box_get_model (GTK_COMBO_BOX (fsel->size));
 316     GtkTreeIter iter;
 317     char *sstr = NULL;
 318
 319     if (gtk_combo_box_get_active_iter (GTK_COMBO_BOX (fsel->size), &iter) && model)
 320         gtk_tree_model_get (model, &iter, 0, &sstr, -1);
 321 #endif // GTK_CHECK_VERSION(2,6,0)
 322     gfloat old_size = fsel->fontsize;
 323     fsel->fontsize = MAX(atof(sstr), 0.1);
 324     if ( fabs(fsel->fontsize-old_size) > 0.001)
 325     {
 326         fsel->fontsize_dirty = true;
 327     }
 328
 329     sp_font_selector_emit_set (fsel);
 330
 331     free (sstr);
 332 }
 333
 334 static void sp_font_selector_emit_set (SPFontSelector *fsel)
 335 {
 336     font_instance *font;
 337
 338     GtkTreeSelection *selection_family;
 339     GtkTreeSelection *selection_style;
 340     GtkTreeModel     *model_family;
 341     GtkTreeModel     *model_style;
 342     GtkTreeIter       iter_family;
 343     GtkTreeIter       iter_style;
 344     char             *family=0, *style=0;
 345
 346     //We need to check this here since most GtkTreeModel operations are not atomic
 347     //See GtkListStore documenation, Chapter "Atomic Operations" --mderezynski
 348
 349     model_family = gtk_tree_view_get_model (GTK_TREE_VIEW (fsel->family_treeview));
 350     if (!model_family) return;
 351     model_style = gtk_tree_view_get_model (GTK_TREE_VIEW (fsel->style_treeview));
 352     if (!model_style) return;
 353
 354     selection_family = gtk_tree_view_get_selection (GTK_TREE_VIEW (fsel->family_treeview));
 355     selection_style = gtk_tree_view_get_selection (GTK_TREE_VIEW (fsel->style_treeview));
 356
 357     if (!gtk_tree_selection_get_selected (selection_family, NULL, &iter_family)) return;
 358     if (!gtk_tree_selection_get_selected (selection_style, NULL, &iter_style)) return;
 359
 360     gtk_tree_model_get (model_family, &iter_family, 0, &family, -1);
 361     gtk_tree_model_get (model_style, &iter_style, 0, &style, -1);
 362
 363     if ((!family) || (!style)) return;
 364
 365     font = (font_factory::Default())->FaceFromDescr (family, style);
 366
 367     // FIXME: when a text object uses non-available font, font==NULL and we can't set size
 368     // (and the size shown in the widget is invalid). To fix, here we must always get some
 369     // default font, exactly the same as sptext uses for on-canvas display, so that
 370     // font!=NULL ever.
 371     if (font != fsel->font || ( font && fsel->fontsize_dirty ) ) {
 372         if ( font ) {
 373             font->Ref();
 374         }
 375         if ( fsel->font ) {
 376             fsel->font->Unref();
 377         }
 378         fsel->font = font;
 379         gtk_signal_emit(GTK_OBJECT(fsel), fs_signals[FONT_SET], fsel->font);
 380     }
 381     fsel->fontsize_dirty = false;
 382     if (font) {
 383         font->Unref();
 384     }
 385     font = NULL;
 386 }
 387
 388 GtkWidget *sp_font_selector_new()
 389 {
 390     SPFontSelector *fsel = (SPFontSelector*) gtk_type_new(SP_TYPE_FONT_SELECTOR);
 391
 392     return (GtkWidget *) fsel;
 393 }
 394
 395 void sp_font_selector_set_font (SPFontSelector *fsel, font_instance *font, double size)
 396 {
 397     if (font)
 398     {
 399             gchar family[256];
 400             font->Family (family, 256);
 401
 402             Gtk::TreePath path;
 403
 404             try {
 405                 path = Inkscape::FontLister::get_instance()->get_row_for_font (family);
 406             } catch (...) {
 407                 return;
 408             }
 409
 410             fsel->block_emit = TRUE;
 411             gtk_tree_selection_select_path (gtk_tree_view_get_selection (GTK_TREE_VIEW (fsel->family_treeview)), path.gobj());
 412             gtk_tree_view_scroll_to_cell (GTK_TREE_VIEW (fsel->family_treeview), path.gobj(), NULL, TRUE, 0.5, 0.5);
 413             fsel->block_emit = FALSE;
 414
 415             GList *list = 0;
 416             GtkTreeIter iter;
 417             GtkTreeModel *model = gtk_tree_view_get_model (GTK_TREE_VIEW(fsel->family_treeview));
 418             gtk_tree_model_get_iter (model, &iter, path.gobj());
 419             gtk_tree_model_get (model, &iter, 1, &list, -1);
 420
 421             gchar descr[256];
 422             font->Name(descr, 256);
 423             std::string descr_best (family);
 424             descr_best += " ";
 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 i = 0;
 431             unsigned int best_i = 0;
 432
 433             // try to find best match with style description (i.e. bold, italic ?)
 434             for (list = list->next ; list ; list = list->next)
 435             {
 436                 i++;
 437                 std::string descr_try (family);
 438                 descr_try += " ";
 439                 descr_try += ((char*)list->data);
 440                 PangoFontDescription *try_ = pango_font_description_from_string(descr_try.c_str());
 441                 if (pango_font_description_better_match (descr_, best_, try_))
 442                 {
 443                     pango_font_description_free (best_);
 444                     best_ = pango_font_description_from_string (descr_try.c_str ());
 445                     best_i = i;
 446                 }
 447                 pango_font_description_free(try_);
 448             }
 449             pango_font_description_free(descr_);
 450             pango_font_description_free(best_);
 451
 452             GtkTreePath *path_c = gtk_tree_path_new ();
 453             gtk_tree_path_append_index (path_c, best_i);
 454             gtk_tree_selection_select_path (gtk_tree_view_get_selection (GTK_TREE_VIEW (fsel->style_treeview)), path_c);
 455             gtk_tree_view_scroll_to_cell (GTK_TREE_VIEW (fsel->style_treeview), path_c, NULL, TRUE, 0.5, 0.5);
 456
 457             if (size != fsel->fontsize)
 458             {
 459                 gchar s[8];
 460                 g_snprintf (s, 8, "%.5g", size); // UI, so printf is ok
 461                 gtk_entry_set_text (GTK_ENTRY (GTK_BIN(fsel->size)->child), s);
 462                 fsel->fontsize = size;
 463             }
 464     }
 465 }
 466
 467 font_instance* sp_font_selector_get_font(SPFontSelector *fsel)
 468 {
 469     if (fsel->font) {
 470         fsel->font->Ref();
 471     }
 472
 473     return fsel->font;
 474 }
 475
 476 double sp_font_selector_get_size(SPFontSelector *fsel)
 477 {
 478     return fsel->fontsize;
 479 }
 480
 481 /* SPFontPreview */
 482
 483 struct SPFontPreview
 484 {
 485     GtkDrawingArea darea;
 486
 487     font_instance *font;
 488     raster_font *rfont;
 489     gchar *phrase;
 490     unsigned long rgba;
 491 };
 492
 493 struct SPFontPreviewClass
 494 {
 495     GtkDrawingAreaClass parent_class;
 496 };
 497
 498 static void sp_font_preview_class_init(SPFontPreviewClass *c);
 499 static void sp_font_preview_init(SPFontPreview *fsel);
 500 static void sp_font_preview_destroy(GtkObject *object);
 501
 502 void sp_font_preview_size_request(GtkWidget *widget, GtkRequisition *req);
 503 static gint sp_font_preview_expose(GtkWidget *widget, GdkEventExpose *event);
 504
 505 static GtkDrawingAreaClass *fp_parent_class = NULL;
 506
 507 GtkType sp_font_preview_get_type()
 508 {
 509     static GtkType type = 0;
 510     if (!type) {
 511         static const GtkTypeInfo info = {
 512             "SPFontPreview",
 513             sizeof (SPFontPreview),
 514             sizeof (SPFontPreviewClass),
 515             (GtkClassInitFunc) sp_font_preview_class_init,
 516             (GtkObjectInitFunc) sp_font_preview_init,
 517             NULL, NULL, NULL
 518         };
 519         type = gtk_type_unique (GTK_TYPE_DRAWING_AREA, &info);
 520     }
 521     return type;
 522 }
 523
 524 static void sp_font_preview_class_init (SPFontPreviewClass *c)
 525 {
 526     GtkObjectClass *object_class = (GtkObjectClass *) c;
 527     GtkWidgetClass *widget_class = (GtkWidgetClass *) c;
 528
 529     fp_parent_class = (GtkDrawingAreaClass*) gtk_type_class(GTK_TYPE_DRAWING_AREA);
 530
 531     object_class->destroy = sp_font_preview_destroy;
 532
 533     widget_class->size_request = sp_font_preview_size_request;
 534     widget_class->expose_event = sp_font_preview_expose;
 535 }
 536
 537 static void sp_font_preview_init(SPFontPreview *fprev)
 538 {
 539     fprev->rgba = 0x000000ff;
 540 }
 541
 542 static void sp_font_preview_destroy(GtkObject *object)
 543 {
 544     SPFontPreview *fprev = SP_FONT_PREVIEW (object);
 545
 546     if (fprev->rfont) {
 547         fprev->rfont->Unref();
 548         fprev->rfont = NULL;
 549     }
 550
 551     if (fprev->font) {
 552         fprev->font->Unref();
 553         fprev->font = NULL;
 554     }
 555
 556     g_free(fprev->phrase);
 557     fprev->phrase = NULL;
 558
 559     if (GTK_OBJECT_CLASS (fp_parent_class)->destroy) {
 560         GTK_OBJECT_CLASS (fp_parent_class)->destroy(object);
 561     }
 562 }
 563
 564 void sp_font_preview_size_request(GtkWidget *widget, GtkRequisition *req)
 565 {
 566     req->width = 256;
 567     req->height = 32;
 568 }
 569
 570 #define SPFP_MAX_LEN 64
 571
 572 static gint sp_font_preview_expose(GtkWidget *widget, GdkEventExpose *event)
 573 {
 574     SPFontPreview *fprev = SP_FONT_PREVIEW(widget);
 575
 576     if (GTK_WIDGET_DRAWABLE (widget)) {
 577         if (fprev->rfont) {
 578
 579             int glyphs[SPFP_MAX_LEN];
 580             double hpos[SPFP_MAX_LEN];
 581
 582             font_instance *tface = fprev->rfont->daddy;
 583
 584             double theSize = NR_MATRIX_DF_EXPANSION (&fprev->rfont->style.transform);
 585
 586             gchar const *p;
 587             if (fprev->phrase) {
 588                 p = fprev->phrase;
 589             } else {
 590                 /* TRANSLATORS: Test string used in text and font dialog (when no
 591                  * text has been entered) to get a preview of the font.  Choose
 592                  * some representative characters that users of your locale will be
 593                  * interested in. */
 594                 p = _("AaBbCcIiPpQq12369$\342\202\254\302\242?.;/()");
 595             }
 596             int len = 0;
 597
 598             NRRect bbox;
 599             bbox.x0 = bbox.y0 = bbox.x1 = bbox.y1 = 0.0;
 600
 601             text_wrapper* str_text=new text_wrapper;
 602             str_text->SetDefaultFont(tface);
 603             str_text->AppendUTF8(p,-1);
 604             if ( str_text->uni32_length > 0 ) {
 605                 str_text->DoLayout();
 606                 if ( str_text->glyph_length > 0 ) {
 607                     PangoFont *curPF = NULL;
 608                     font_instance *curF = NULL;
 609                     for (int i = 0; i < str_text->glyph_length && i < SPFP_MAX_LEN; i++) {
 610                         if ( str_text->glyph_text[i].font != curPF ) {
 611                             curPF = str_text->glyph_text[i].font;
 612                             if (curF) {
 613                                 curF->Unref();
 614                             }
 615                             curF = NULL;
 616                             if ( curPF ) {
 617                                 PangoFontDescription* pfd = pango_font_describe(curPF);
 618                                 curF = (font_factory::Default())->Face(pfd);
 619                                 pango_font_description_free(pfd);
 620                             }
 621                         }
 622                         NR::Point base_pt(str_text->glyph_text[i].x, str_text->glyph_text[i].y);
 623                         base_pt *= theSize;
 624
 625                         glyphs[len] = str_text->glyph_text[i].gl;
 626                         hpos[len] = base_pt[0];
 627                         len++;
 628                         if ( curF ) {
 629                             NR::Maybe<NR::Rect> nbbox = curF->BBox(str_text->glyph_text[i].gl);
 630                             if (nbbox) {
 631                                 bbox.x0 = MIN(bbox.x0, base_pt[NR::X] + theSize * (nbbox->min())[0]);
 632                                 bbox.y0 = MIN(bbox.y0, base_pt[NR::Y] - theSize * (nbbox->max())[1]);
 633                                 bbox.x1 = MAX(bbox.x1, base_pt[NR::X] + theSize * (nbbox->max())[0]);
 634                                 bbox.y1 = MAX(bbox.y1, base_pt[NR::Y] - theSize * (nbbox->min())[1]);
 635                             }
 636                         }
 637                     }
 638                     if ( curF ) {
 639                         curF->Unref();
 640                     }
 641                 }
 642             }
 643
 644             // XXX: FIXME: why does this code ignore adv.y
 645             /*                  while (p && *p && (len < SPFP_MAX_LEN)) {
 646                                 unsigned int unival;
 647                                 NRRect gbox;
 648                                 unival = g_utf8_get_char (p);
 649                                 glyphs[len] =  tface->MapUnicodeChar( unival);
 650                                 hpos[len] = (int)px;
 651                                 NR::Point adv = fprev->rfont->Advance(glyphs[len]);
 652                                 fprev->rfont->BBox( glyphs[len], &gbox);
 653                                 bbox.x0 = MIN (px + gbox.x0, bbox.x0);
 654                                 bbox.y0 = MIN (py + gbox.y0, bbox.y0);
 655                                 bbox.x1 = MAX (px + gbox.x1, bbox.x1);
 656                                 bbox.y1 = MAX (py + gbox.y1, bbox.y1);
 657                                 px += adv[NR::X];
 658                                 len += 1;
 659                                 p = g_utf8_next_char (p);
 660                                 }*/
 661
 662             float startx = (widget->allocation.width - (bbox.x1 - bbox.x0)) / 2;
 663             float starty = widget->allocation.height - (widget->allocation.height - (bbox.y1 - bbox.y0)) / 2 - bbox.y1;
 664
 665             for (int y = event->area.y; y < event->area.y + event->area.height; y += 64) {
 666                 for (int x = event->area.x; x < event->area.x + event->area.width; x += 64) {
 667                     NRPixBlock pb, m;
 668                     int x0 = x;
 669                     int y0 = y;
 670                     int x1 = MIN(x0 + 64, event->area.x + event->area.width);
 671                     int y1 = MIN(y0 + 64, event->area.y + event->area.height);
 672                     guchar *ps = nr_pixelstore_16K_new (TRUE, 0xff);
 673                     nr_pixblock_setup_extern(&pb, NR_PIXBLOCK_MODE_R8G8B8, x0, y0, x1, y1, ps, 3 * (x1 - x0), FALSE, FALSE);
 674                     nr_pixblock_setup_fast(&m, NR_PIXBLOCK_MODE_A8, x0, y0, x1, y1, TRUE);
 675                     pb.empty = FALSE;
 676
 677                     PangoFont *curPF = NULL;
 678                     font_instance *curF = NULL;
 679                     raster_font *curRF = NULL;
 680                     for (int i=0; i < len; i++) {
 681                         if ( str_text->glyph_text[i].font != curPF ) {
 682                             curPF=str_text->glyph_text[i].font;
 683                             if ( curF ) {
 684                                 curF->Unref();
 685                             }
 686                             curF = NULL;
 687                             if ( curPF ) {
 688                                 PangoFontDescription* pfd = pango_font_describe(curPF);
 689                                 curF=(font_factory::Default())->Face(pfd);
 690                                 pango_font_description_free(pfd);
 691                             }
 692                             if ( curF ) {
 693                                 if ( curRF ) {
 694                                     curRF->Unref();
 695                                 }
 696                                 curRF = NULL;
 697                                 curRF = curF->RasterFont(fprev->rfont->style);
 698                             }
 699                         }
 700                         raster_glyph *g = (curRF) ? curRF->GetGlyph(glyphs[i]) : NULL;
 701                         if ( g ) {
 702                             g->Blit(NR::Point(hpos[i] + startx, starty), m);
 703                         }
 704                     }
 705                     if (curRF) {
 706                         curRF->Unref();
 707                     }
 708                     if (curF) {
 709                         curF->Unref();
 710                     }
 711
 712                     nr_blit_pixblock_mask_rgba32(&pb, &m, fprev->rgba);
 713                     gdk_draw_rgb_image(widget->window, widget->style->black_gc,
 714                                        x0, y0, x1 - x0, y1 - y0,
 715                                        GDK_RGB_DITHER_NONE, NR_PIXBLOCK_PX (&pb), pb.rs);
 716                     nr_pixblock_release(&m);
 717                     nr_pixblock_release(&pb);
 718                     nr_pixelstore_16K_free(ps);
 719                 }
 720             }
 721
 722             delete str_text;
 723
 724         } else {
 725             nr_gdk_draw_gray_garbage(widget->window, widget->style->black_gc,
 726                                      event->area.x, event->area.y,
 727                                      event->area.width, event->area.height);
 728         }
 729     }
 730
 731     return TRUE;
 732 }
 733
 734 GtkWidget * sp_font_preview_new()
 735 {
 736     GtkWidget *w = (GtkWidget*) gtk_type_new(SP_TYPE_FONT_PREVIEW);
 737
 738     return w;
 739 }
 740
 741 void sp_font_preview_set_font(SPFontPreview *fprev, font_instance *font, SPFontSelector *fsel)
 742 {
 743         if (font)
 744         {
 745             font->Ref();
 746         }
 747
 748         if (fprev->font)
 749         {
 750             fprev->font->Unref();
 751         }
 752
 753         fprev->font = font;
 754
 755         if (fprev->rfont)
 756         {
 757             fprev->rfont->Unref();
 758             fprev->rfont=NULL;
 759         }
 760
 761         if (fprev->font)
 762         {
 763             NRMatrix flip;
 764             nr_matrix_set_scale (&flip, fsel->fontsize, -fsel->fontsize);
 765             fprev->rfont = fprev->font->RasterFont(flip, 0);
 766         }
 767
 768         if (GTK_WIDGET_DRAWABLE (fprev)) gtk_widget_queue_draw (GTK_WIDGET (fprev));
 769 }
 770
 771 void sp_font_preview_set_rgba32(SPFontPreview *fprev, guint32 rgba)
 772 {
 773     fprev->rgba = rgba;
 774     if (GTK_WIDGET_DRAWABLE (fprev)) {
 775         gtk_widget_queue_draw (GTK_WIDGET (fprev));
 776     }
 777 }
 778
 779 void sp_font_preview_set_phrase(SPFontPreview *fprev, const gchar *phrase)
 780 {
 781     g_free (fprev->phrase);
 782     if (phrase) {
 783         fprev->phrase = g_strdup (phrase);
 784     } else {
 785         fprev->phrase = NULL;
 786     }
 787     if (GTK_WIDGET_DRAWABLE(fprev)) {
 788         gtk_widget_queue_draw (GTK_WIDGET (fprev));
 789     }
 790 }
 791
 792
 793 /*
 794   Local Variables:
 795   mode:c++
 796   c-file-style:"stroustrup"
 797   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
 798   indent-tabs-mode:nil
 799   fill-column:99
 800   End:
 801 */
 802 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :