git.sur5r.net Git - glabels/blob - glabels2/src/view-text.c

   1 /*
   2  *  (GLABELS) Label and Business Card Creation program for GNOME
   3  *
   4  *  view_text.c:  GLabels label text object widget
   5  *
   6  *  Copyright (C) 2001-2002  Jim Evins <evins@snaught.com>.
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  21  */
  22
  23 #include <glib.h>
  24
  25 #include <libgnomeprint/gnome-glyphlist.h>
  26
  27 #include "view-text.h"
  28 #include "canvas-hacktext.h"
  29 #include "view-highlight.h"
  30 #include "wdgt-text-entry.h"
  31 #include "wdgt-text-props.h"
  32 #include "wdgt-position.h"
  33 #include "color.h"
  34 #include "prefs.h"
  35 #include "hig.h"
  36
  37 #include "pixmaps/cursor_text.xbm"
  38 #include "pixmaps/cursor_text_mask.xbm"
  39
  40 #include "debug.h"
  41
  42 /*========================================================*/
  43 /* Private macros and constants.                          */
  44 /*========================================================*/
  45
  46 /*========================================================*/
  47 /* Private types.                                         */
  48 /*========================================================*/
  49
  50 struct _glViewTextPrivate {
  51
  52         GList     *item_list;
  53
  54         /* Page 0 widgets */
  55         GtkWidget *text_entry;
  56
  57         /* Page 1 widgets */
  58         GtkWidget *text_props;
  59
  60         /* Page 2 widgets */
  61         GtkWidget *position;
  62 };
  63
  64 /*========================================================*/
  65 /* Private globals.                                       */
  66 /*========================================================*/
  67
  68 static glViewObjectClass *parent_class = NULL;
  69
  70
  71 /*========================================================*/
  72 /* Private function prototypes.                           */
  73 /*========================================================*/
  74
  75 static void      gl_view_text_class_init       (glViewTextClass *klass);
  76 static void      gl_view_text_instance_init    (glViewText      *view_text);
  77 static void      gl_view_text_finalize         (GObject         *object);
  78
  79 static void      update_view_text_cb           (glLabelObject   *object,
  80                                                 glViewText      *view_text);
  81
  82 static GtkWidget *construct_properties_dialog  (glViewText      *view_text);
  83
  84 static void      response_cb                   (GtkDialog       *dialog,
  85                                                 gint             response,
  86                                                 glViewText      *view_text);
  87
  88 static void      text_entry_changed_cb         (glWdgtTextEntry *text_entry,
  89                                                 glViewText      *view_text);
  90
  91 static void      text_props_changed_cb         (glWdgtTextProps *text_props,
  92                                                 glViewText      *view_text);
  93
  94 static void      position_changed_cb           (glWdgtPosition  *position,
  95                                                 glViewText      *view_text);
  96
  97 static void      update_dialog_cb              (glLabelObject   *object,
  98                                                 glViewText      *view_text);
  99
 100 static void      update_dialog_from_move_cb    (glLabelObject   *object,
 101                                                 gdouble          dx,
 102                                                 gdouble          dy,
 103                                                 glViewText      *view_text);
 104
 105 static void      draw_hacktext                 (glViewText      *view_text);
 106
 107 \f
 108 /*****************************************************************************/
 109 /* Boilerplate object stuff.                                                 */
 110 /*****************************************************************************/
 111 GType
 112 gl_view_text_get_type (void)
 113 {
 114         static GType type = 0;
 115
 116         if (!type) {
 117                 GTypeInfo info = {
 118                         sizeof (glViewTextClass),
 119                         NULL,
 120                         NULL,
 121                         (GClassInitFunc) gl_view_text_class_init,
 122                         NULL,
 123                         NULL,
 124                         sizeof (glViewText),
 125                         0,
 126                         (GInstanceInitFunc) gl_view_text_instance_init,
 127                 };
 128
 129                 type = g_type_register_static (GL_TYPE_VIEW_OBJECT,
 130                                                "glViewText", &info, 0);
 131         }
 132
 133         return type;
 134 }
 135
 136 static void
 137 gl_view_text_class_init (glViewTextClass *klass)
 138 {
 139         GObjectClass *object_class = (GObjectClass *) klass;
 140
 141         gl_debug (DEBUG_VIEW, "START");
 142
 143         parent_class = g_type_class_peek_parent (klass);
 144
 145         object_class->finalize = gl_view_text_finalize;
 146
 147         gl_debug (DEBUG_VIEW, "END");
 148 }
 149
 150 static void
 151 gl_view_text_instance_init (glViewText *view_text)
 152 {
 153         gl_debug (DEBUG_VIEW, "START");
 154
 155         view_text->private = g_new0 (glViewTextPrivate, 1);
 156
 157         gl_debug (DEBUG_VIEW, "END");
 158 }
 159
 160 static void
 161 gl_view_text_finalize (GObject *object)
 162 {
 163         glLabel       *parent;
 164
 165         gl_debug (DEBUG_VIEW, "START");
 166
 167         g_return_if_fail (object && GL_IS_VIEW_TEXT (object));
 168
 169         G_OBJECT_CLASS (parent_class)->finalize (object);
 170
 171         gl_debug (DEBUG_VIEW, "END");
 172 }
 173
 174 /*****************************************************************************/
 175 /* NEW text object view.                                                  */
 176 /*****************************************************************************/
 177 glViewObject *
 178 gl_view_text_new (glLabelText *object,
 179                   glView     *view)
 180 {
 181         glViewText         *view_text;
 182         GtkMenu            *menu;
 183
 184         gl_debug (DEBUG_VIEW, "START");
 185         g_return_if_fail (object && GL_IS_LABEL_TEXT (object));
 186         g_return_if_fail (view && GL_IS_VIEW (view));
 187
 188         view_text = g_object_new (gl_view_text_get_type(), NULL);
 189
 190         gl_view_object_set_view (GL_VIEW_OBJECT(view_text), view);
 191         gl_view_object_set_object (GL_VIEW_OBJECT(view_text),
 192                                    GL_LABEL_OBJECT(object),
 193                                    GL_VIEW_HIGHLIGHT_SIMPLE);
 194
 195         /* Create analogous canvas item. */
 196         draw_hacktext (view_text);
 197
 198         g_signal_connect (G_OBJECT (object), "changed",
 199                           G_CALLBACK (update_view_text_cb), view_text);
 200
 201         /* Create a dialog for controlling/viewing object properties. */
 202         gl_view_object_set_dlg_constructor (GL_VIEW_OBJECT(view_text),
 203                                             GL_VIEW_OBJECT_DLG_CONSTRUCTOR(construct_properties_dialog));
 204
 205         gl_debug (DEBUG_VIEW, "END");
 206
 207         return GL_VIEW_OBJECT (view_text);
 208 }
 209
 210 /*---------------------------------------------------------------------------*/
 211 /* PRIVATE. label object "changed" callback.                                 */
 212 /*---------------------------------------------------------------------------*/
 213 static void
 214 update_view_text_cb (glLabelObject *object,
 215                      glViewText    *view_text)
 216 {
 217         gl_debug (DEBUG_VIEW, "START");
 218
 219         /* Adjust appearance of analogous canvas item. */
 220         draw_hacktext (view_text);
 221
 222         gl_debug (DEBUG_VIEW, "END");
 223 }
 224
 225 /*****************************************************************************/
 226 /* Create a properties dialog for a text object.                          */
 227 /*****************************************************************************/
 228 static GtkWidget *
 229 construct_properties_dialog (glViewText *view_text)
 230 {
 231         GtkWidget          *dialog, *wsection, *wbutton;
 232         glLabelObject      *object;
 233         gdouble            x, y, w, h, label_width, label_height;
 234         GList              *lines;
 235         gchar              *font_family;
 236         gdouble            font_size;
 237         GnomeFontWeight    font_weight;
 238         gboolean           font_italic_flag;
 239         guint              color;
 240         GtkJustification   just;
 241         glMerge            *merge;
 242         GtkSizeGroup       *label_size_group;
 243         GtkWidget          *window;
 244
 245         gl_debug (DEBUG_VIEW, "START");
 246
 247         /* retrieve object and query parameters */
 248         object = gl_view_object_get_object (GL_VIEW_OBJECT(view_text));
 249         gl_label_object_get_position (GL_LABEL_OBJECT(object), &x, &y);
 250         lines = gl_label_text_get_lines(GL_LABEL_TEXT(object));
 251         gl_label_text_get_props (GL_LABEL_TEXT(object),
 252                                  &font_family, &font_size,
 253                                  &font_weight, &font_italic_flag,
 254                                  &color, &just);
 255         gl_label_get_size (GL_LABEL(object->parent),
 256                            &label_width, &label_height);
 257         merge = gl_label_get_merge (GL_LABEL(object->parent));
 258
 259         /*-----------------------------------------------------------------*/
 260         /* Build dialog.                                                   */
 261         /*-----------------------------------------------------------------*/
 262         window = gtk_widget_get_toplevel (
 263                 GTK_WIDGET(gl_view_object_get_view(GL_VIEW_OBJECT(view_text))));
 264         dialog = gl_hig_dialog_new_with_buttons ( _("Edit text object properties"),
 265                                                   GTK_WINDOW (window),
 266                                                   GTK_DIALOG_DESTROY_WITH_PARENT,
 267                                                   GTK_STOCK_CLOSE,
 268                                                            GTK_RESPONSE_CLOSE,
 269                                                   NULL );
 270         gtk_window_set_resizable (GTK_WINDOW (dialog), FALSE);
 271         g_signal_connect (G_OBJECT (dialog), "response",
 272                           G_CALLBACK (response_cb), view_text);
 273
 274         label_size_group = gtk_size_group_new (GTK_SIZE_GROUP_HORIZONTAL);
 275
 276         /*---------------------------*/
 277         /* Text Section              */
 278         /*---------------------------*/
 279         wsection = gl_hig_category_new (_("Text"));
 280         gl_hig_dialog_add_widget (GL_HIG_DIALOG(dialog), wsection);
 281         view_text->private->text_entry =
 282                 gl_wdgt_text_entry_new (merge->field_defs);
 283         gl_wdgt_text_entry_set_label_size_group (GL_WDGT_TEXT_ENTRY(view_text->private->text_entry),
 284                                                  label_size_group);
 285         gl_wdgt_text_entry_set_text (GL_WDGT_TEXT_ENTRY(view_text->private->text_entry),
 286                                      (merge->type != GL_MERGE_NONE),
 287                                      lines);
 288         gl_hig_category_add_widget (GL_HIG_CATEGORY(wsection),
 289                                     view_text->private->text_entry);
 290         g_signal_connect ( G_OBJECT(view_text->private->text_entry),
 291                            "changed", G_CALLBACK (text_entry_changed_cb),
 292                            view_text);
 293
 294
 295         /*---------------------------*/
 296         /* Text Properties section   */
 297         /*---------------------------*/
 298         wsection = gl_hig_category_new (_("Properties"));
 299         gl_hig_dialog_add_widget (GL_HIG_DIALOG(dialog), wsection);
 300         view_text->private->text_props = gl_wdgt_text_props_new ();
 301         gl_wdgt_text_props_set_label_size_group (GL_WDGT_TEXT_PROPS(view_text->private->text_props),
 302                                                  label_size_group);
 303         gl_wdgt_text_props_set_params (GL_WDGT_TEXT_PROPS(view_text->private->text_props),
 304                                        font_family, font_size, font_weight,
 305                                        font_italic_flag, color, just);
 306         gl_hig_category_add_widget (GL_HIG_CATEGORY(wsection),
 307                                     view_text->private->text_props);
 308         g_signal_connect ( G_OBJECT(view_text->private->text_props),
 309                            "changed", G_CALLBACK (text_props_changed_cb),
 310                            view_text);
 311
 312
 313         /*----------------------------*/
 314         /* Position section           */
 315         /*----------------------------*/
 316         wsection = gl_hig_category_new (_("Position"));
 317         gl_hig_dialog_add_widget (GL_HIG_DIALOG(dialog), wsection);
 318         view_text->private->position = gl_wdgt_position_new ();
 319         gl_wdgt_position_set_label_size_group (GL_WDGT_POSITION(view_text->private->position),
 320                                                label_size_group);
 321         gl_wdgt_position_set_params (GL_WDGT_POSITION (view_text->private->position),
 322                                      x, y,
 323                                      label_width, label_height);
 324         gl_hig_category_add_widget (GL_HIG_CATEGORY(wsection),
 325                                     view_text->private->position);
 326         g_signal_connect (G_OBJECT (view_text->private->position),
 327                           "changed",
 328                           G_CALLBACK(position_changed_cb), view_text);
 329
 330
 331         /*----------------------------*/
 332         /* Track object changes.      */
 333         /*----------------------------*/
 334         g_signal_connect (G_OBJECT (object), "changed",
 335                           G_CALLBACK (update_dialog_cb), view_text);
 336         g_signal_connect (G_OBJECT (object), "moved",
 337                           G_CALLBACK (update_dialog_from_move_cb), view_text);
 338
 339         gl_debug (DEBUG_VIEW, "END");
 340
 341         return dialog;
 342 }
 343
 344 /*---------------------------------------------------------------------------*/
 345 /* PRIVATE.  "Response" callback.                                            */
 346 /*---------------------------------------------------------------------------*/
 347 static void
 348 response_cb (GtkDialog     *dialog,
 349              gint           response,
 350              glViewText    *view_text)
 351 {
 352         gl_debug (DEBUG_VIEW, "START");
 353
 354         g_return_if_fail(dialog != NULL);
 355         g_return_if_fail(GTK_IS_DIALOG(dialog));
 356
 357         switch(response) {
 358         case GTK_RESPONSE_CLOSE:
 359                 gtk_widget_hide (GTK_WIDGET(dialog));
 360                 break;
 361         case GTK_RESPONSE_DELETE_EVENT:
 362                 break;
 363         default:
 364                 g_print ("response = %d", response);
 365                 g_assert_not_reached();
 366         }
 367
 368         gl_debug (DEBUG_VIEW, "END");
 369 }
 370
 371 /*---------------------------------------------------------------------------*/
 372 /* PRIVATE.  text_entry "changed" callback.                                  */
 373 /*---------------------------------------------------------------------------*/
 374 static void
 375 text_entry_changed_cb (glWdgtTextEntry  *text_entry,
 376                        glViewText       *view_text)
 377 {
 378         glLabelObject    *object;
 379         GList            *lines;
 380
 381         gl_debug (DEBUG_VIEW, "START");
 382
 383         object = gl_view_object_get_object (GL_VIEW_OBJECT(view_text));
 384
 385         lines = gl_wdgt_text_entry_get_text (text_entry);
 386
 387         g_signal_handlers_block_by_func (G_OBJECT(object),
 388                                          update_dialog_cb, view_text);
 389         gl_label_text_set_lines (GL_LABEL_TEXT(object), lines);
 390         g_signal_handlers_unblock_by_func (G_OBJECT(object),
 391                                            update_dialog_cb, view_text);
 392
 393         gl_text_node_lines_free (&lines);
 394
 395         gl_debug (DEBUG_VIEW, "END");
 396 }
 397
 398 /*---------------------------------------------------------------------------*/
 399 /* PRIVATE.  text_props "changed" callback.                                  */
 400 /*---------------------------------------------------------------------------*/
 401 static void
 402 text_props_changed_cb (glWdgtTextProps  *text_props,
 403                        glViewText       *view_text)
 404 {
 405         glLabelObject      *object;
 406         gchar              *font_family;
 407         gdouble            font_size;
 408         GnomeFontWeight    font_weight;
 409         gboolean           font_italic_flag;
 410         guint              color;
 411         GtkJustification   just;
 412
 413
 414         gl_debug (DEBUG_VIEW, "START");
 415
 416         object = gl_view_object_get_object (GL_VIEW_OBJECT(view_text));
 417
 418         gl_wdgt_text_props_get_params (text_props,
 419                                        &font_family, &font_size, &font_weight,
 420                                        &font_italic_flag,
 421                                        &color, &just);
 422
 423         g_signal_handlers_block_by_func (G_OBJECT(object),
 424                                          update_dialog_cb, view_text);
 425         gl_label_text_set_props (GL_LABEL_TEXT(object),
 426                                  font_family, font_size, font_weight,
 427                                  font_italic_flag,
 428                                  color, just);
 429         g_signal_handlers_unblock_by_func (G_OBJECT(object),
 430                                            update_dialog_cb, view_text);
 431
 432         g_free (font_family);
 433
 434         gl_debug (DEBUG_VIEW, "END");
 435 }
 436
 437 /*---------------------------------------------------------------------------*/
 438 /* PRIVATE.  position "changed" callback.                                    */
 439 /*---------------------------------------------------------------------------*/
 440 static void
 441 position_changed_cb (glWdgtPosition     *position,
 442                      glViewText         *view_text)
 443 {
 444         glLabelObject      *object;
 445         gdouble            x, y;
 446
 447         gl_debug (DEBUG_VIEW, "START");
 448
 449         gl_wdgt_position_get_position (GL_WDGT_POSITION (position), &x, &y);
 450
 451         object = gl_view_object_get_object (GL_VIEW_OBJECT(view_text));
 452
 453         g_signal_handlers_block_by_func (G_OBJECT(object),
 454                                          update_dialog_cb, view_text);
 455         gl_label_object_set_position (GL_LABEL_OBJECT(object), x, y);
 456         g_signal_handlers_unblock_by_func (G_OBJECT(object),
 457                                            update_dialog_cb, view_text);
 458
 459         gl_debug (DEBUG_VIEW, "END");
 460 }
 461
 462 /*---------------------------------------------------------------------------*/
 463 /* PRIVATE. label object "changed" callback.                                 */
 464 /*---------------------------------------------------------------------------*/
 465 static void
 466 update_dialog_cb (glLabelObject  *object,
 467                   glViewText     *view_text)
 468 {
 469         gdouble            x, y;
 470         GList              *lines;
 471         glMerge            *merge;
 472         gchar              *font_family;
 473         gdouble            font_size;
 474         GnomeFontWeight    font_weight;
 475         gboolean           font_italic_flag;
 476         guint              color;
 477         GtkJustification   just;
 478
 479         gl_debug (DEBUG_VIEW, "START");
 480
 481         /* Query properties of object. */
 482         lines = gl_label_text_get_lines(GL_LABEL_TEXT(object));
 483         gl_label_text_get_props (GL_LABEL_TEXT(object),
 484                                  &font_family, &font_size,
 485                                  &font_weight, &font_italic_flag,
 486                                  &color, &just);
 487         gl_label_object_get_position (GL_LABEL_OBJECT(object), &x, &y);
 488         merge = gl_label_get_merge (GL_LABEL(object->parent));
 489
 490         /* Block widget handlers to prevent recursion */
 491         g_signal_handlers_block_by_func (G_OBJECT(view_text->private->text_entry),
 492                                          text_entry_changed_cb, view_text);
 493         g_signal_handlers_block_by_func (G_OBJECT(view_text->private->text_props),
 494                                          text_props_changed_cb, view_text);
 495         g_signal_handlers_block_by_func (G_OBJECT(view_text->private->position),
 496                                          position_changed_cb, view_text);
 497
 498         /* Update widgets in property dialog */
 499
 500         gl_wdgt_text_entry_set_text (GL_WDGT_TEXT_ENTRY(view_text->private->text_entry),
 501                                      (merge->type != GL_MERGE_NONE),
 502                                      lines);
 503         gl_wdgt_text_entry_set_field_defs (GL_WDGT_TEXT_ENTRY(view_text->private->text_entry),
 504                                            merge->field_defs);
 505         gl_wdgt_text_props_set_params (GL_WDGT_TEXT_PROPS(view_text->private->text_props),
 506                                        font_family, font_size, font_weight,
 507                                        font_italic_flag, color, just);
 508         gl_wdgt_position_set_position (GL_WDGT_POSITION(view_text->private->position),
 509                                        x, y);
 510
 511         /* Unblock widget handlers */
 512         g_signal_handlers_unblock_by_func (G_OBJECT(view_text->private->text_entry),
 513                                            text_entry_changed_cb, view_text);
 514         g_signal_handlers_unblock_by_func (G_OBJECT(view_text->private->text_props),
 515                                            text_props_changed_cb, view_text);
 516         g_signal_handlers_unblock_by_func (G_OBJECT(view_text->private->position),
 517                                            position_changed_cb, view_text);
 518
 519         gl_text_node_lines_free (&lines);
 520
 521         gl_debug (DEBUG_VIEW, "END");
 522 }
 523
 524 /*---------------------------------------------------------------------------*/
 525 /* PRIVATE. label object "moved" callback.                                   */
 526 /*---------------------------------------------------------------------------*/
 527 static void
 528 update_dialog_from_move_cb (glLabelObject *object,
 529                             gdouble        dx,
 530                             gdouble        dy,
 531                             glViewText    *view_text)
 532 {
 533         gdouble            x, y;
 534
 535         gl_debug (DEBUG_VIEW, "START");
 536
 537         /* Query properties of object. */
 538         gl_label_object_get_position (GL_LABEL_OBJECT(object), &x, &y);
 539
 540         /* Block widget handlers to prevent recursion */
 541         g_signal_handlers_block_by_func (G_OBJECT(view_text->private->position),
 542                                          position_changed_cb, view_text);
 543
 544         /* Update widgets in property dialog */
 545         gl_wdgt_position_set_position (GL_WDGT_POSITION(view_text->private->position),
 546                                        x, y);
 547
 548         /* Unblock widget handlers */
 549         g_signal_handlers_unblock_by_func (G_OBJECT(view_text->private->position),
 550                                            position_changed_cb, view_text);
 551
 552         gl_debug (DEBUG_VIEW, "END");
 553 }
 554
 555 /*****************************************************************************/
 556 /* Return apropos cursor for create object mode.                             */
 557 /*****************************************************************************/
 558 GdkCursor *
 559 gl_view_text_get_create_cursor (void)
 560 {
 561         static GdkCursor *cursor = NULL;
 562         GdkPixmap        *pixmap_data, *pixmap_mask;
 563         GdkColor         fg = { 0, 0, 0, 0 };
 564         GdkColor         bg = { 0, 65535, 65535, 65535 };
 565
 566         gl_debug (DEBUG_VIEW, "START");
 567
 568         if (!cursor) {
 569                 pixmap_data = gdk_bitmap_create_from_data (NULL,
 570                                                            cursor_text_bits,
 571                                                            cursor_text_width,
 572                                                            cursor_text_height);
 573                 pixmap_mask = gdk_bitmap_create_from_data (NULL,
 574                                                            cursor_text_mask_bits,
 575                                                            cursor_text_mask_width,
 576                                                            cursor_text_mask_height);
 577                 cursor =
 578                     gdk_cursor_new_from_pixmap (pixmap_data, pixmap_mask, &fg,
 579                                                 &bg, cursor_text_x_hot,
 580                                                 cursor_text_y_hot);
 581         }
 582
 583         gl_debug (DEBUG_VIEW, "END");
 584
 585         return cursor;
 586 }
 587
 588 /*****************************************************************************/
 589 /* Canvas event handler for creating text objects.                           */
 590 /*****************************************************************************/
 591 int
 592 gl_view_text_create_event_handler (GnomeCanvas *canvas,
 593                                       GdkEvent    *event,
 594                                       glView      *view)
 595 {
 596         static gdouble      x0, y0;
 597         static gboolean     dragging = FALSE;
 598         static glViewObject *view_text;
 599         static GObject      *object;
 600         gdouble             x, y;
 601         GList               *lines;
 602
 603         gl_debug (DEBUG_VIEW, "");
 604
 605         switch (event->type) {
 606
 607         case GDK_BUTTON_PRESS:
 608                 gl_debug (DEBUG_VIEW, "BUTTON_PRESS");
 609                 switch (event->button.button) {
 610                 case 1:
 611                         dragging = TRUE;
 612                         gnome_canvas_item_grab (canvas->root,
 613                                                 GDK_POINTER_MOTION_MASK |
 614                                                 GDK_BUTTON_RELEASE_MASK |
 615                                                 GDK_BUTTON_PRESS_MASK,
 616                                                 NULL, event->button.time);
 617                         gnome_canvas_window_to_world (canvas,
 618                                                       event->button.x,
 619                                                       event->button.y, &x, &y);
 620                         object = gl_label_text_new (view->label);
 621                         gl_label_object_set_position (GL_LABEL_OBJECT(object),
 622                                                      x, y);
 623                         gl_label_text_set_props (GL_LABEL_TEXT(object),
 624                                                  gl_prefs->default_font_family,
 625                                                  gl_prefs->default_font_size,
 626                                                  gl_prefs->default_font_weight,
 627                                                  gl_prefs->default_font_italic_flag,
 628                                                  gl_color_set_opacity (gl_prefs->default_text_color, 0.5),
 629                                                  gl_prefs->default_text_alignment);
 630                         lines = gl_text_node_lines_new_from_text (_("Text"));
 631                         gl_label_text_set_lines (GL_LABEL_TEXT(object), lines);
 632                         view_text = gl_view_text_new (GL_LABEL_TEXT(object),
 633                                                       view);
 634                         x0 = x;
 635                         y0 = y;
 636                         return TRUE;
 637
 638                 default:
 639                         return FALSE;
 640                 }
 641
 642         case GDK_BUTTON_RELEASE:
 643                 gl_debug (DEBUG_VIEW, "BUTTON_RELEASE");
 644                 switch (event->button.button) {
 645                 case 1:
 646                         dragging = FALSE;
 647                         gnome_canvas_item_ungrab (canvas->root, event->button.time);
 648                         gnome_canvas_window_to_world (canvas,
 649                                                       event->button.x,
 650                                                       event->button.y, &x, &y);
 651                         gl_label_object_set_position (GL_LABEL_OBJECT(object),
 652                                                       x, y);
 653                         gl_label_text_set_props (GL_LABEL_TEXT(object),
 654                                                  gl_prefs->default_font_family,
 655                                                  gl_prefs->default_font_size,
 656                                                  gl_prefs->default_font_weight,
 657                                                  gl_prefs->default_font_italic_flag,
 658                                                  gl_prefs->default_text_color,
 659                                                  gl_prefs->default_text_alignment);
 660                         gl_view_unselect_all (view);
 661                         gl_view_object_select (GL_VIEW_OBJECT(view_text));
 662                         gl_view_arrow_mode (view);
 663                         return TRUE;
 664
 665                 default:
 666                         return FALSE;
 667                 }
 668
 669         case GDK_MOTION_NOTIFY:
 670                 gl_debug (DEBUG_VIEW, "MOTION_NOTIFY");
 671                 if (dragging && (event->motion.state & GDK_BUTTON1_MASK)) {
 672                         gnome_canvas_window_to_world (canvas,
 673                                                       event->motion.x,
 674                                                       event->motion.y, &x, &y);
 675                         gl_label_object_set_position (GL_LABEL_OBJECT(object),
 676                                                       x, y);
 677                         return TRUE;
 678                 } else {
 679                         return FALSE;
 680                 }
 681
 682         default:
 683                 return FALSE;
 684         }
 685
 686 }
 687
 688 /*--------------------------------------------------------------------------*/
 689 /* PRIVATE.  Draw hacktext to item (group).                                 */
 690 /*--------------------------------------------------------------------------*/
 691 static void
 692 draw_hacktext (glViewText *view_text)
 693 {
 694         glLabelObject    *object;
 695         GnomeCanvasItem  *item;
 696         GList            *lines;
 697         gchar            *text;
 698         gchar            *font_family;
 699         GnomeFontWeight  font_weight;
 700         gboolean         font_italic_flag;
 701         gdouble          font_size;
 702         guint            color;
 703         GtkJustification just;
 704         GnomeFont        *font;
 705         GnomeGlyphList   *glyphlist;
 706         ArtDRect         bbox;
 707         gdouble          affine[6];
 708         gdouble          x_offset, y_offset, w, object_w, object_h;
 709         gint             i;
 710         gchar            **line;
 711         GList            *li;
 712
 713         gl_debug (DEBUG_VIEW, "START");
 714
 715         /* Query label object and properties */
 716         object = gl_view_object_get_object (GL_VIEW_OBJECT(view_text));
 717         gl_label_object_get_size (object, &object_w, &object_h);
 718         gl_label_text_get_props (GL_LABEL_TEXT(object),
 719                                  &font_family, &font_size,
 720                                  &font_weight, &font_italic_flag,
 721                                  &color, &just);
 722         lines = gl_label_text_get_lines(GL_LABEL_TEXT(object));
 723         text = gl_text_node_lines_expand (lines, NULL);
 724         line = g_strsplit (text, "\n", -1);
 725
 726         /* remove previous items from group. */
 727         for (li = view_text->private->item_list; li != NULL; li = li->next) {
 728                 gl_debug (DEBUG_VIEW, "in loop");
 729                 gtk_object_destroy (GTK_OBJECT (li->data));
 730         }
 731         gl_debug (DEBUG_VIEW, "1");
 732         g_list_free (view_text->private->item_list);
 733         view_text->private->item_list = NULL;
 734         gl_debug (DEBUG_VIEW, "2");
 735
 736         /* get Gnome Font */
 737         font = gnome_font_find_closest_from_weight_slant (font_family,
 738                                                           font_weight,
 739                                                           font_italic_flag,
 740                                                           font_size);
 741         art_affine_identity (affine);
 742
 743         /* render to group, one item per line. */
 744         for (i = 0; line[i] != NULL; i++) {
 745
 746                 glyphlist = gnome_glyphlist_from_text_dumb (font, color,
 747                                                             0.0, 0.0,
 748                                                             line[i]);
 749
 750                 gnome_glyphlist_bbox (glyphlist, affine, 0, &bbox);
 751                 w = bbox.x1;
 752
 753                 switch (just) {
 754                 case GTK_JUSTIFY_LEFT:
 755                         x_offset = 0.0;
 756                         break;
 757                 case GTK_JUSTIFY_CENTER:
 758                         x_offset = (object_w - w) / 2.0;
 759                         break;
 760                 case GTK_JUSTIFY_RIGHT:
 761                         x_offset = object_w - w;
 762                         break;
 763                 default:
 764                         x_offset = 0.0;
 765                         break;  /* shouldn't happen */
 766                 }
 767
 768                 y_offset =
 769                         (i + 1) * font_size + gnome_font_get_descender (font);
 770
 771                 item = gl_view_object_item_new (GL_VIEW_OBJECT(view_text),
 772                                                 gl_canvas_hacktext_get_type (),
 773                                                 "x", x_offset,
 774                                                 "y", y_offset,
 775                                                 "glyphlist", glyphlist, NULL);
 776                 view_text->private->item_list =
 777                         g_list_prepend (view_text->private->item_list, item);
 778
 779         }
 780
 781         /* clean up */
 782         g_strfreev (line);
 783         gl_text_node_lines_free (&lines);
 784         g_free (text);
 785
 786         gl_debug (DEBUG_VIEW, "END");
 787 }
 788