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

   1 /*
   2  *  (GLABELS) Label and Business Card Creation program for GNOME
   3  *
   4  *  print.c:  Print module
   5  *
   6  *  Copyright (C) 2001  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 #include <config.h>
  23
  24 #include <math.h>
  25 #include <time.h>
  26 #include <ctype.h>
  27 #include <gtk/gtk.h>
  28
  29 #include "print.h"
  30 #include "label.h"
  31 #include "label-text.h"
  32 #include "label-box.h"
  33 #include "label-line.h"
  34 #include "label-ellipse.h"
  35 #include "label-image.h"
  36 #include "label-barcode.h"
  37 #include "bc.h"
  38 #include <libglabels/template.h>
  39 #include "color.h"
  40
  41 #include "debug.h"
  42
  43 #define ARC_FINE   2  /* Resolution in degrees of large arcs */
  44 #define ARC_COURSE 5  /* Resolution in degrees of small arcs */
  45
  46 #define TICK_OFFSET  2.25
  47 #define TICK_LENGTH 18.0
  48
  49 /*=========================================================================*/
  50 /* Private types.                                                          */
  51 /*=========================================================================*/
  52
  53 typedef struct _PrintInfo {
  54         /* gnome print context */
  55         GnomePrintContext *pc;
  56
  57         /* gnome print configuration */
  58         GnomePrintConfig *config;
  59
  60         /* gLabels Template */
  61         glTemplate *template;
  62         gboolean label_rotate_flag;
  63
  64         /* page size */
  65         gdouble page_width;
  66         gdouble page_height;
  67
  68         /* page counter */
  69         gint sheet;
  70 } PrintInfo;
  71
  72
  73 /*=========================================================================*/
  74 /* Private function prototypes.                                            */
  75 /*=========================================================================*/
  76 static PrintInfo *print_info_new              (GnomePrintJob    *job,
  77                                                glLabel          *label);
  78
  79 static void       print_info_free             (PrintInfo       **pi);
  80
  81
  82 static void       print_page_begin            (PrintInfo        *pi);
  83
  84 static void       print_page_end              (PrintInfo        *pi);
  85
  86 static void       print_crop_marks            (PrintInfo        *pi);
  87
  88 static void       print_label                 (PrintInfo        *pi,
  89                                                glLabel          *label,
  90                                                gdouble           x,
  91                                                gdouble           y,
  92                                                glMergeRecord    *record,
  93                                                gboolean          outline_flag,
  94                                                gboolean          reverse_flag);
  95
  96
  97 static void       draw_label                  (PrintInfo        *pi,
  98                                                glLabel          *label,
  99                                                glMergeRecord    *record);
 100
 101
 102 static void       draw_object                 (PrintInfo        *pi,
 103                                                glLabelObject    *object,
 104                                                glMergeRecord    *record);
 105
 106 static void       draw_text_object            (PrintInfo        *pi,
 107                                                glLabelText      *object,
 108                                                glMergeRecord    *record);
 109
 110 static void       draw_box_object             (PrintInfo        *pi,
 111                                                glLabelBox       *object);
 112
 113 static void       draw_line_object            (PrintInfo        *pi,
 114                                                glLabelLine      *object);
 115
 116 static void       draw_ellipse_object         (PrintInfo        *pi,
 117                                                glLabelEllipse   *object);
 118
 119 static void       draw_image_object           (PrintInfo        *pi,
 120                                                glLabelImage     *object,
 121                                                glMergeRecord    *record);
 122
 123 static void       draw_barcode_object         (PrintInfo        *pi,
 124                                                glLabelBarcode   *object,
 125                                                glMergeRecord    *record);
 126
 127
 128 static void       draw_outline                (PrintInfo        *pi,
 129                                                glLabel          *label);
 130
 131 static void       clip_to_outline             (PrintInfo        *pi,
 132                                                glLabel          *label);
 133
 134 static void       clip_punchouts              (PrintInfo        *pi,
 135                                                glLabel          *label);
 136
 137
 138 static void       create_rectangle_path         (GnomePrintContext *pc,
 139                                                  gdouble            x0,
 140                                                  gdouble            y0,
 141                                                  gdouble            w,
 142                                                  gdouble            h);
 143
 144 static void       create_ellipse_path           (GnomePrintContext *pc,
 145                                                  gdouble            x0,
 146                                                  gdouble            y0,
 147                                                  gdouble            rx,
 148                                                  gdouble            ry);
 149
 150 static void       create_rounded_rectangle_path (GnomePrintContext *pc,
 151                                                  gdouble            x0,
 152                                                  gdouble            y0,
 153                                                  gdouble            w,
 154                                                  gdouble            h,
 155                                                  gdouble            r);
 156
 157 static void       create_clipped_circle_path    (GnomePrintContext *pc,
 158                                                  gdouble            x0,
 159                                                  gdouble            y0,
 160                                                  gdouble            w,
 161                                                  gdouble            h,
 162                                                  gdouble            r);
 163
 164 #ifndef NO_ALPHA_HACK
 165 static guchar *   get_pixels_as_rgb             (const GdkPixbuf   *pixbuf);
 166 #endif
 167
 168 \f
 169 /*****************************************************************************/
 170 /* Simple (no merge data) print command.                                     */
 171 /*****************************************************************************/
 172 void
 173 gl_print_simple (GnomePrintJob    *job,
 174                  glLabel          *label,
 175                  gint              n_sheets,
 176                  gint              first,
 177                  gint              last,
 178                  glPrintFlags     *flags)
 179 {
 180         PrintInfo                 *pi;
 181         const glTemplateLabelType *label_type;
 182         gint                       i_sheet, i_label;
 183         glTemplateOrigin          *origins;
 184
 185         gl_debug (DEBUG_PRINT, "START");
 186
 187         pi         = print_info_new (job, label);
 188         label_type = gl_template_get_first_label_type (pi->template);
 189
 190         origins = gl_template_get_origins (label_type);
 191
 192         for (i_sheet = 0; i_sheet < n_sheets; i_sheet++) {
 193
 194                 print_page_begin (pi);
 195                 if (flags->crop_marks) {
 196                         print_crop_marks (pi);
 197                 }
 198
 199                 for (i_label = first - 1; i_label < last; i_label++) {
 200
 201                         print_label (pi, label,
 202                                      origins[i_label].x, origins[i_label].y,
 203                                      NULL, flags->outline, flags->reverse);
 204
 205                 }
 206
 207                 print_page_end (pi);
 208         }
 209
 210         g_free (origins);
 211
 212         print_info_free (&pi);
 213
 214         gl_debug (DEBUG_PRINT, "END");
 215 }
 216
 217 /*****************************************************************************/
 218 /* Merge print command (collated copies)                                     */
 219 /*****************************************************************************/
 220 void
 221 gl_print_merge_collated (GnomePrintJob    *job,
 222                          glLabel          *label,
 223                          gint              n_copies,
 224                          gint              first,
 225                          glPrintFlags     *flags)
 226 {
 227         glMerge                   *merge;
 228         const GList               *record_list;
 229         PrintInfo                 *pi;
 230         const glTemplateLabelType *label_type;
 231         gint                       i_sheet, i_label, n_labels_per_page, i_copy;
 232         glMergeRecord             *record;
 233         GList                     *p;
 234         glTemplateOrigin          *origins;
 235
 236         gl_debug (DEBUG_PRINT, "START");
 237
 238         merge = gl_label_get_merge (label);
 239         record_list = gl_merge_get_record_list (merge);
 240
 241         pi = print_info_new (job, label);
 242         label_type = gl_template_get_first_label_type (pi->template);
 243
 244         n_labels_per_page = gl_template_get_n_labels (label_type);
 245         origins = gl_template_get_origins (label_type);
 246
 247         i_sheet = 0;
 248         i_label = first - 1;
 249
 250         for ( p=(GList *)record_list; p!=NULL; p=p->next ) {
 251                 record = (glMergeRecord *)p->data;
 252
 253                 if ( record->select_flag ) {
 254                         for (i_copy = 0; i_copy < n_copies; i_copy++) {
 255
 256                                 if ((i_label == 0) || (i_sheet == 0)) {
 257                                         i_sheet++;
 258                                         print_page_begin (pi);
 259                                         if (flags->crop_marks) {
 260                                                 print_crop_marks (pi);
 261                                         }
 262                                 }
 263
 264                                 print_label (pi, label,
 265                                              origins[i_label].x,
 266                                              origins[i_label].y,
 267                                              record,
 268                                              flags->outline, flags->reverse);
 269
 270                                 i_label = (i_label + 1) % n_labels_per_page;
 271                                 if (i_label == 0) {
 272                                         print_page_end (pi);
 273                                 }
 274                         }
 275                 }
 276         }
 277
 278         if (i_label != 0) {
 279                 print_page_end (pi);
 280         }
 281
 282         g_free (origins);
 283
 284         print_info_free (&pi);
 285
 286         gl_debug (DEBUG_PRINT, "END");
 287 }
 288
 289 /*****************************************************************************/
 290 /* Merge print command (uncollated copies)                                   */
 291 /*****************************************************************************/
 292 void
 293 gl_print_merge_uncollated (GnomePrintJob    *job,
 294                            glLabel          *label,
 295                            gint              n_copies,
 296                            gint              first,
 297                            glPrintFlags     *flags)
 298 {
 299         glMerge                   *merge;
 300         const GList               *record_list;
 301         PrintInfo                 *pi;
 302         const glTemplateLabelType *label_type;
 303         gint                       i_sheet, i_label, n_labels_per_page, i_copy;
 304         glMergeRecord             *record;
 305         GList                     *p;
 306         glTemplateOrigin          *origins;
 307
 308         gl_debug (DEBUG_PRINT, "START");
 309
 310         merge = gl_label_get_merge (label);
 311         record_list = gl_merge_get_record_list (merge);
 312
 313         pi = print_info_new (job, label);
 314         label_type = gl_template_get_first_label_type (pi->template);
 315
 316         n_labels_per_page = gl_template_get_n_labels (label_type);
 317         origins = gl_template_get_origins (label_type);
 318
 319         i_sheet = 0;
 320         i_label = first - 1;
 321
 322         for (i_copy = 0; i_copy < n_copies; i_copy++) {
 323
 324                 for ( p=(GList *)record_list; p!=NULL; p=p->next ) {
 325                         record = (glMergeRecord *)p->data;
 326
 327                         if ( record->select_flag ) {
 328
 329
 330                                 if ((i_label == 0) || (i_sheet == 0)) {
 331                                         i_sheet++;
 332                                         print_page_begin (pi);
 333                                         if (flags->crop_marks) {
 334                                                 print_crop_marks (pi);
 335                                         }
 336                                 }
 337
 338                                 print_label (pi, label,
 339                                              origins[i_label].x,
 340                                              origins[i_label].y,
 341                                              record,
 342                                              flags->outline, flags->reverse);
 343
 344                                 i_label = (i_label + 1) % n_labels_per_page;
 345                                 if (i_label == 0) {
 346                                         print_page_end (pi);
 347                                 }
 348                         }
 349                 }
 350
 351         }
 352         if (i_label != 0) {
 353                 print_page_end (pi);
 354         }
 355
 356         g_free (origins);
 357
 358         print_info_free (&pi);
 359
 360         gl_debug (DEBUG_PRINT, "END");
 361 }
 362
 363 /*****************************************************************************/
 364 /* Batch print.  Call appropriate function above.                            */
 365 /*****************************************************************************/
 366 void
 367 gl_print_batch (GnomePrintJob    *job,
 368                 glLabel          *label,
 369                 gint              n_sheets,
 370                 gint              n_copies,
 371                 glPrintFlags     *flags)
 372 {
 373         glMerge                   *merge;
 374         glTemplate                *template;
 375         const glTemplateLabelType *label_type;
 376         gint                       n_per_page;
 377
 378         gl_debug (DEBUG_PRINT, "START");
 379
 380         merge = gl_label_get_merge (label);
 381         template = gl_label_get_template (label);
 382         label_type = gl_template_get_first_label_type (template);
 383
 384         if ( merge == NULL ) {
 385                 n_per_page = gl_template_get_n_labels(label_type);
 386
 387                 gl_print_simple (job, label, n_sheets, 1, n_per_page, flags);
 388         } else {
 389                 gl_print_merge_collated (job, label, n_copies, 1, flags);
 390         }
 391         gl_template_free (template);
 392
 393         gl_debug (DEBUG_PRINT, "END");
 394 }
 395
 396 /*---------------------------------------------------------------------------*/
 397 /* PRIVATE.  new print info structure                                        */
 398 /*---------------------------------------------------------------------------*/
 399 static PrintInfo *
 400 print_info_new (GnomePrintJob    *job,
 401                 glLabel          *label)
 402 {
 403         PrintInfo            *pi = g_new0 (PrintInfo, 1);
 404         glTemplate           *template;
 405
 406         gl_debug (DEBUG_PRINT, "START");
 407
 408         g_return_val_if_fail (job && GNOME_IS_PRINT_JOB (job), NULL);
 409         g_return_val_if_fail (label && GL_IS_LABEL (label), NULL);
 410
 411         template = gl_label_get_template (label);
 412
 413         g_return_val_if_fail (template, NULL);
 414         g_return_val_if_fail (template->page_size, NULL);
 415         g_return_val_if_fail (template->page_width > 0, NULL);
 416         g_return_val_if_fail (template->page_height > 0, NULL);
 417
 418         pi->pc = gnome_print_job_get_context (job);
 419         pi->config = gnome_print_job_get_config (job);
 420
 421         gl_debug (DEBUG_PRINT,
 422                   "setting page size = \"%s\"", template->page_size);
 423
 424         gnome_print_config_set_length (pi->config,
 425                                        GNOME_PRINT_KEY_PAPER_WIDTH,
 426                                        template->page_width,
 427                                        GNOME_PRINT_PS_UNIT);
 428         gnome_print_config_set_length (pi->config,
 429                                        GNOME_PRINT_KEY_PAPER_HEIGHT,
 430                                        template->page_height,
 431                                        GNOME_PRINT_PS_UNIT);
 432
 433         pi->page_width  = template->page_width;
 434         pi->page_height = template->page_height;
 435
 436         pi->template = template;
 437         pi->label_rotate_flag = gl_label_get_rotate_flag (label);
 438
 439         pi->sheet = 0;
 440
 441         gl_debug (DEBUG_PRINT, "END");
 442
 443         return pi;
 444 }
 445
 446 /*---------------------------------------------------------------------------*/
 447 /* PRIVATE.  free print info structure                                       */
 448 /*---------------------------------------------------------------------------*/
 449 static void
 450 print_info_free (PrintInfo **pi)
 451 {
 452         gl_debug (DEBUG_PRINT, "START");
 453
 454         gl_template_free ((*pi)->template);
 455         (*pi)->template = NULL;
 456
 457         gnome_print_context_close ((*pi)->pc);
 458
 459         g_free (*pi);
 460         *pi = NULL;
 461
 462         gl_debug (DEBUG_PRINT, "END");
 463 }
 464
 465 /*---------------------------------------------------------------------------*/
 466 /* PRIVATE.  Begin a new page.                                               */
 467 /*---------------------------------------------------------------------------*/
 468 static void
 469 print_page_begin (PrintInfo *pi)
 470 {
 471         gchar *str;
 472
 473         gl_debug (DEBUG_PRINT, "START");
 474
 475         pi->sheet++;
 476
 477         str = g_strdup_printf ("sheet%02d", pi->sheet);
 478         gnome_print_beginpage (pi->pc, str);
 479         g_free (str);
 480
 481         /* Translate and scale, so that our origin is at the upper left. */
 482         gnome_print_translate (pi->pc, 0.0, pi->page_height);
 483         gnome_print_scale (pi->pc, 1.0, -1.0);
 484
 485         gl_debug (DEBUG_PRINT, "END");
 486 }
 487
 488 /*---------------------------------------------------------------------------*/
 489 /* PRIVATE.  End a page.                                                     */
 490 /*---------------------------------------------------------------------------*/
 491 static void
 492 print_page_end (PrintInfo *pi)
 493 {
 494         gl_debug (DEBUG_PRINT, "START");
 495
 496         gnome_print_showpage (pi->pc);
 497
 498         gl_debug (DEBUG_PRINT, "END");
 499 }
 500
 501 /*---------------------------------------------------------------------------*/
 502 /* PRIVATE.  Print crop tick marks.                                          */
 503 /*---------------------------------------------------------------------------*/
 504 static void
 505 print_crop_marks (PrintInfo *pi)
 506 {
 507         const glTemplateLabelType *label_type;
 508         gdouble                    w, h, page_w, page_h;
 509         GList                     *p;
 510         glTemplateLayout          *layout;
 511         gdouble                    xmin, ymin, xmax, ymax, dx, dy;
 512         gdouble                    x1, y1, x2, y2, x3, y3, x4, y4;
 513         gint                       ix, iy, nx, ny;
 514
 515         gl_debug (DEBUG_PRINT, "START");
 516
 517         label_type = gl_template_get_first_label_type (pi->template);
 518
 519         gl_template_get_label_size (label_type, &w, &h);
 520
 521         page_w = pi->page_width;
 522         page_h = pi->page_height;
 523
 524         gnome_print_setrgbcolor (pi->pc, 0.25, 0.25, 0.25);
 525         gnome_print_setopacity (pi->pc, 1.0);
 526         gnome_print_setlinewidth (pi->pc, 0.25);
 527
 528         for (p=label_type->layouts; p != NULL; p=p->next) {
 529
 530                 layout = (glTemplateLayout *)p->data;
 531
 532                 xmin = layout->x0;
 533                 ymin = layout->y0;
 534                 xmax = layout->x0 + layout->dx*(layout->nx - 1) + w;
 535                 ymax = layout->y0 + layout->dy*(layout->ny - 1) + h;
 536
 537                 dx = layout->dx;
 538                 dy = layout->dy;
 539
 540                 nx = layout->nx;
 541                 ny = layout->ny;
 542
 543                 for (ix=0; ix < nx; ix++) {
 544
 545                         x1 = xmin + ix*dx;
 546                         x2 = x1 + w;
 547
 548                         y1 = MAX((ymin - TICK_OFFSET), 0.0);
 549                         y2 = MAX((y1 - TICK_LENGTH), 0.0);
 550
 551                         y3 = MIN((ymax + TICK_OFFSET), page_h);
 552                         y4 = MIN((y3 + TICK_LENGTH), page_h);
 553
 554                         gnome_print_moveto (pi->pc, x1, y1);
 555                         gnome_print_lineto (pi->pc, x1, y2);
 556                         gnome_print_stroke (pi->pc);
 557
 558                         gnome_print_moveto (pi->pc, x2, y1);
 559                         gnome_print_lineto (pi->pc, x2, y2);
 560                         gnome_print_stroke (pi->pc);
 561
 562                         gnome_print_moveto (pi->pc, x1, y3);
 563                         gnome_print_lineto (pi->pc, x1, y4);
 564                         gnome_print_stroke (pi->pc);
 565
 566                         gnome_print_moveto (pi->pc, x2, y3);
 567                         gnome_print_lineto (pi->pc, x2, y4);
 568                         gnome_print_stroke (pi->pc);
 569
 570                 }
 571
 572                 for (iy=0; iy < ny; iy++) {
 573
 574                         y1 = ymin + iy*dy;
 575                         y2 = y1 + h;
 576
 577                         x1 = MAX((xmin - TICK_OFFSET), 0.0);
 578                         x2 = MAX((x1 - TICK_LENGTH), 0.0);
 579
 580                         x3 = MIN((xmax + TICK_OFFSET), page_w);
 581                         x4 = MIN((x3 + TICK_LENGTH), page_w);
 582
 583                         gnome_print_moveto (pi->pc, x1, y1);
 584                         gnome_print_lineto (pi->pc, x2, y1);
 585                         gnome_print_stroke (pi->pc);
 586
 587                         gnome_print_moveto (pi->pc, x1, y2);
 588                         gnome_print_lineto (pi->pc, x2, y2);
 589                         gnome_print_stroke (pi->pc);
 590
 591                         gnome_print_moveto (pi->pc, x3, y1);
 592                         gnome_print_lineto (pi->pc, x4, y1);
 593                         gnome_print_stroke (pi->pc);
 594
 595                         gnome_print_moveto (pi->pc, x3, y2);
 596                         gnome_print_lineto (pi->pc, x4, y2);
 597                         gnome_print_stroke (pi->pc);
 598
 599                 }
 600
 601         }
 602
 603         gl_debug (DEBUG_PRINT, "END");
 604 }
 605
 606 /*---------------------------------------------------------------------------*/
 607 /* PRIVATE.  Print i'th label.                                               */
 608 /*---------------------------------------------------------------------------*/
 609 static void
 610 print_label (PrintInfo     *pi,
 611              glLabel       *label,
 612              gdouble        x,
 613              gdouble        y,
 614              glMergeRecord *record,
 615              gboolean       outline_flag,
 616              gboolean       reverse_flag)
 617 {
 618         const glTemplateLabelType *label_type;
 619         gdouble                    width, height;
 620
 621         gl_debug (DEBUG_PRINT, "START");
 622
 623         label_type = gl_template_get_first_label_type (pi->template);
 624
 625         gl_label_get_size (label, &width, &height);
 626
 627         gnome_print_gsave (pi->pc);
 628
 629         /* Transform coordinate system to be relative to upper corner */
 630         /* of the current label */
 631         gnome_print_translate (pi->pc, x, y);
 632         if (gl_label_get_rotate_flag (label)) {
 633                 gl_debug (DEBUG_PRINT, "Rotate flag set");
 634                 gnome_print_rotate (pi->pc, -90.0);
 635                 gnome_print_translate (pi->pc, -width, 0.0);
 636         }
 637         if ( reverse_flag ) {
 638                 gnome_print_translate (pi->pc, width, 0.0);
 639                 gnome_print_scale (pi->pc, -1.0, 1.0);
 640         }
 641
 642         clip_to_outline (pi, label);
 643         draw_label (pi, label, record);
 644         if (outline_flag) {
 645                 draw_outline (pi, label);
 646         }
 647         clip_punchouts (pi, label);
 648
 649         gnome_print_grestore (pi->pc);
 650
 651         gl_debug (DEBUG_PRINT, "END");
 652 }
 653
 654 /*---------------------------------------------------------------------------*/
 655 /* PRIVATE.  Draw label.                                                     */
 656 /*---------------------------------------------------------------------------*/
 657 static void
 658 draw_label (PrintInfo     *pi,
 659             glLabel       *label,
 660             glMergeRecord *record)
 661 {
 662         GList *p_obj;
 663         glLabelObject *object;
 664
 665         gl_debug (DEBUG_PRINT, "START");
 666
 667         for (p_obj = label->objects; p_obj != NULL; p_obj = p_obj->next) {
 668                 object = (glLabelObject *) p_obj->data;
 669
 670                 draw_object (pi, object, record);
 671         }
 672
 673         gl_debug (DEBUG_PRINT, "END");
 674 }
 675
 676 /*---------------------------------------------------------------------------*/
 677 /* PRIVATE.  Draw object.                                                    */
 678 /*---------------------------------------------------------------------------*/
 679 static void
 680 draw_object (PrintInfo     *pi,
 681              glLabelObject *object,
 682              glMergeRecord *record)
 683 {
 684         gdouble x0, y0;
 685         gdouble affine[6];
 686
 687         gl_debug (DEBUG_PRINT, "START");
 688
 689         gl_label_object_get_position (object, &x0, &y0);
 690         gl_label_object_get_affine (object, affine);
 691
 692         gnome_print_gsave (pi->pc);
 693
 694         gnome_print_translate (pi->pc, x0, y0);
 695         gnome_print_concat (pi->pc, affine);
 696
 697         if (GL_IS_LABEL_TEXT(object)) {
 698                 draw_text_object (pi, GL_LABEL_TEXT(object), record);
 699         } else if (GL_IS_LABEL_BOX(object)) {
 700                 draw_box_object (pi, GL_LABEL_BOX(object));
 701         } else if (GL_IS_LABEL_LINE(object)) {
 702                 draw_line_object (pi, GL_LABEL_LINE(object));
 703         } else if (GL_IS_LABEL_ELLIPSE(object)) {
 704                 draw_ellipse_object (pi, GL_LABEL_ELLIPSE(object));
 705         } else if (GL_IS_LABEL_IMAGE(object)) {
 706                 draw_image_object (pi, GL_LABEL_IMAGE(object), record);
 707         } else if (GL_IS_LABEL_BARCODE(object)) {
 708                 draw_barcode_object (pi, GL_LABEL_BARCODE(object), record);
 709         }
 710
 711         gnome_print_grestore (pi->pc);
 712
 713         gl_debug (DEBUG_PRINT, "END");
 714 }
 715
 716 /*---------------------------------------------------------------------------*/
 717 /* PRIVATE.  Draw text object.                                               */
 718 /*---------------------------------------------------------------------------*/
 719 static void
 720 draw_text_object (PrintInfo     *pi,
 721                   glLabelText   *object,
 722                   glMergeRecord *record)
 723 {
 724         GnomeFont *font;
 725         gchar **line;
 726         gint i;
 727         gdouble x_offset, y_offset, w, object_w, object_h;
 728         gchar *text;
 729         GList *lines;
 730         gchar *font_family;
 731         gdouble font_size;
 732         GnomeFontWeight font_weight;
 733         gboolean font_italic_flag;
 734         guint color;
 735         GtkJustification just;
 736         GnomeGlyphList *glyphlist;
 737         ArtDRect bbox;
 738         gdouble affine[6];
 739         gdouble text_line_spacing;
 740
 741
 742         gl_debug (DEBUG_PRINT, "START");
 743
 744         gl_label_object_get_size (GL_LABEL_OBJECT(object), &object_w, &object_h);
 745         lines = gl_label_text_get_lines (object);
 746         font_family = gl_label_object_get_font_family (GL_LABEL_OBJECT(object));
 747         font_size = gl_label_object_get_font_size (GL_LABEL_OBJECT(object));
 748         font_weight = gl_label_object_get_font_weight (GL_LABEL_OBJECT(object));
 749         font_italic_flag = gl_label_object_get_font_italic_flag (GL_LABEL_OBJECT(object));
 750         color = gl_label_object_get_text_color (GL_LABEL_OBJECT(object));
 751         just = gl_label_object_get_text_alignment (GL_LABEL_OBJECT(object));
 752         text_line_spacing = gl_label_object_get_text_line_spacing (GL_LABEL_OBJECT(object));
 753
 754         font = gnome_font_find_closest_from_weight_slant (
 755                                        font_family,
 756                                        font_weight,
 757                                        font_italic_flag,
 758                                        font_size);
 759         gnome_print_setfont (pi->pc, font);
 760
 761         gnome_print_setrgbcolor (pi->pc,
 762                                  GL_COLOR_F_RED (color),
 763                                  GL_COLOR_F_GREEN (color),
 764                                  GL_COLOR_F_BLUE (color));
 765         gnome_print_setopacity (pi->pc, GL_COLOR_F_ALPHA (color));
 766
 767         text = gl_text_node_lines_expand (lines, record);
 768         line = g_strsplit (text, "\n", -1);
 769         g_free (text);
 770
 771         art_affine_identity (affine);
 772
 773         for (i = 0; line[i] != NULL; i++) {
 774
 775                 glyphlist = gnome_glyphlist_from_text_dumb (font, color,
 776                                                             0.0, 0.0,
 777                                                             line[i]);
 778
 779                 gnome_glyphlist_bbox (glyphlist, affine, 0, &bbox);
 780                 w = bbox.x1;
 781
 782                 switch (just) {
 783                 case GTK_JUSTIFY_LEFT:
 784                         x_offset = GL_LABEL_TEXT_MARGIN;
 785                         break;
 786                 case GTK_JUSTIFY_CENTER:
 787                         x_offset = (object_w - GL_LABEL_TEXT_MARGIN - w) / 2.0;
 788                         break;
 789                 case GTK_JUSTIFY_RIGHT:
 790                         x_offset = object_w - GL_LABEL_TEXT_MARGIN - w;
 791                         break;
 792                 default:
 793                         x_offset = 0.0;
 794                         break;  /* shouldn't happen */
 795                 }
 796
 797                 /* Work out the y position to the BOTTOM of the first line */
 798                 y_offset = GL_LABEL_TEXT_MARGIN +
 799                            + gnome_font_get_descender (font)
 800                            + (i + 1) * font_size * text_line_spacing;
 801
 802                 /* Remove any text line spacing from the first row. */
 803                 y_offset -= font_size * (text_line_spacing - 1);
 804
 805
 806                 gnome_print_moveto (pi->pc, x_offset, y_offset);
 807
 808                 gnome_print_gsave (pi->pc);
 809                 gnome_print_scale (pi->pc, 1.0, -1.0);
 810                 gnome_print_show (pi->pc, line[i]);
 811                 gnome_print_grestore (pi->pc);
 812         }
 813
 814         g_strfreev (line);
 815
 816         gl_text_node_lines_free (&lines);
 817         g_free (font_family);
 818
 819         gl_debug (DEBUG_PRINT, "END");
 820 }
 821
 822 /*---------------------------------------------------------------------------*/
 823 /* PRIVATE.  Draw box object.                                                */
 824 /*---------------------------------------------------------------------------*/
 825 static void
 826 draw_box_object (PrintInfo  *pi,
 827                  glLabelBox *object)
 828 {
 829         gdouble w, h;
 830         gdouble line_width;
 831         guint line_color, fill_color;
 832
 833         gl_debug (DEBUG_PRINT, "START");
 834
 835         gl_label_object_get_size (GL_LABEL_OBJECT(object), &w, &h);
 836         line_width = gl_label_object_get_line_width (GL_LABEL_OBJECT(object));
 837         line_color = gl_label_object_get_line_color (GL_LABEL_OBJECT(object));
 838         fill_color = gl_label_object_get_fill_color (GL_LABEL_OBJECT(object));
 839
 840         /* Paint fill color */
 841         create_rectangle_path (pi->pc, 0.0, 0.0, w, h);
 842         gnome_print_setrgbcolor (pi->pc,
 843                                  GL_COLOR_F_RED (fill_color),
 844                                  GL_COLOR_F_GREEN (fill_color),
 845                                  GL_COLOR_F_BLUE (fill_color));
 846         gnome_print_setopacity (pi->pc, GL_COLOR_F_ALPHA (fill_color));
 847         gnome_print_fill (pi->pc);
 848
 849         /* Draw outline */
 850         create_rectangle_path (pi->pc, 0.0, 0.0, w, h);
 851         gnome_print_setrgbcolor (pi->pc,
 852                                  GL_COLOR_F_RED (line_color),
 853                                  GL_COLOR_F_GREEN (line_color),
 854                                  GL_COLOR_F_BLUE (line_color));
 855         gnome_print_setopacity (pi->pc, GL_COLOR_F_ALPHA (line_color));
 856         gnome_print_setlinewidth (pi->pc, line_width);
 857         gnome_print_stroke (pi->pc);
 858
 859         gl_debug (DEBUG_PRINT, "END");
 860 }
 861
 862 /*---------------------------------------------------------------------------*/
 863 /* PRIVATE.  Draw line object.                                               */
 864 /*---------------------------------------------------------------------------*/
 865 static void
 866 draw_line_object (PrintInfo   *pi,
 867                   glLabelLine *object)
 868 {
 869         gdouble w, h;
 870         gdouble line_width;
 871         guint line_color;
 872
 873         gl_debug (DEBUG_PRINT, "START");
 874
 875         gl_label_object_get_size (GL_LABEL_OBJECT(object), &w, &h);
 876         line_width = gl_label_object_get_line_width (GL_LABEL_OBJECT(object));
 877         line_color = gl_label_object_get_line_color (GL_LABEL_OBJECT(object));
 878
 879         gnome_print_moveto (pi->pc, 0.0, 0.0);
 880         gnome_print_lineto (pi->pc, w, h);
 881         gnome_print_setrgbcolor (pi->pc,
 882                                  GL_COLOR_F_RED (line_color),
 883                                  GL_COLOR_F_GREEN (line_color),
 884                                  GL_COLOR_F_BLUE (line_color));
 885         gnome_print_setopacity (pi->pc, GL_COLOR_F_ALPHA (line_color));
 886         gnome_print_setlinewidth (pi->pc, line_width);
 887         gnome_print_stroke (pi->pc);
 888
 889         gl_debug (DEBUG_PRINT, "END");
 890 }
 891
 892 /*---------------------------------------------------------------------------*/
 893 /* PRIVATE.  Draw ellipse object.                                            */
 894 /*---------------------------------------------------------------------------*/
 895 static void
 896 draw_ellipse_object (PrintInfo      *pi,
 897                      glLabelEllipse *object)
 898 {
 899         gdouble x0, y0, rx, ry, w, h;
 900         gdouble line_width;
 901         guint line_color, fill_color;
 902
 903         gl_debug (DEBUG_PRINT, "START");
 904
 905         gl_label_object_get_size (GL_LABEL_OBJECT(object), &w, &h);
 906         line_width = gl_label_object_get_line_width (GL_LABEL_OBJECT(object));
 907         line_color = gl_label_object_get_line_color (GL_LABEL_OBJECT(object));
 908         fill_color = gl_label_object_get_fill_color (GL_LABEL_OBJECT(object));
 909
 910         rx = w / 2.0;
 911         ry = h / 2.0;
 912         x0 = rx;
 913         y0 = ry;
 914
 915         /* Paint fill color */
 916         create_ellipse_path (pi->pc, x0, y0, rx, ry);
 917         gnome_print_setrgbcolor (pi->pc,
 918                                  GL_COLOR_F_RED (fill_color),
 919                                  GL_COLOR_F_GREEN (fill_color),
 920                                  GL_COLOR_F_BLUE (fill_color));
 921         gnome_print_setopacity (pi->pc, GL_COLOR_F_ALPHA (fill_color));
 922         gnome_print_fill (pi->pc);
 923
 924         /* Draw outline */
 925         create_ellipse_path (pi->pc, x0, y0, rx, ry);
 926         gnome_print_setrgbcolor (pi->pc,
 927                                  GL_COLOR_F_RED (line_color),
 928                                  GL_COLOR_F_GREEN (line_color),
 929                                  GL_COLOR_F_BLUE (line_color));
 930         gnome_print_setopacity (pi->pc, GL_COLOR_F_ALPHA (line_color));
 931         gnome_print_setlinewidth (pi->pc, line_width);
 932         gnome_print_stroke (pi->pc);
 933
 934         gl_debug (DEBUG_PRINT, "END");
 935 }
 936
 937 /*---------------------------------------------------------------------------*/
 938 /* PRIVATE.  Draw image object.                                              */
 939 /*---------------------------------------------------------------------------*/
 940 static void
 941 draw_image_object (PrintInfo     *pi,
 942                    glLabelImage  *object,
 943                    glMergeRecord *record)
 944 {
 945         gdouble w, h;
 946         const GdkPixbuf *pixbuf;
 947         guchar *image_data;
 948         gint image_w, image_h, image_stride;
 949         gboolean image_alpha_flag;
 950         gint ret;
 951
 952         gl_debug (DEBUG_PRINT, "START");
 953
 954         gl_label_object_get_size     (GL_LABEL_OBJECT(object), &w, &h);
 955
 956         pixbuf = gl_label_image_get_pixbuf (object, record);
 957         image_data = gdk_pixbuf_get_pixels (pixbuf);
 958         image_w = gdk_pixbuf_get_width (pixbuf);
 959         image_h = gdk_pixbuf_get_height (pixbuf);
 960         image_stride = gdk_pixbuf_get_rowstride(pixbuf);
 961         image_alpha_flag = gdk_pixbuf_get_has_alpha(pixbuf);
 962
 963         gnome_print_gsave (pi->pc);
 964         gnome_print_translate (pi->pc, 0.0, h);
 965         gnome_print_scale (pi->pc, w, -h);
 966         if (image_alpha_flag) {
 967 #ifndef NO_ALPHA_HACK
 968                 guchar *image_data2;
 969
 970                 image_data2 = get_pixels_as_rgb (pixbuf);
 971                 ret = gnome_print_rgbimage (pi->pc, image_data2,
 972                                             image_w, image_h, image_stride);
 973                 g_free (image_data2);
 974 #else
 975                 ret = gnome_print_rgbaimage (pi->pc, image_data,
 976                                             image_w, image_h, image_stride);
 977 #endif
 978         } else {
 979                 ret = gnome_print_rgbimage (pi->pc, image_data,
 980                                             image_w, image_h, image_stride);
 981         }
 982         gnome_print_grestore (pi->pc);
 983
 984         gl_debug (DEBUG_PRINT, "END");
 985 }
 986
 987 /*---------------------------------------------------------------------------*/
 988 /* PRIVATE.  Draw box object.                                                */
 989 /*---------------------------------------------------------------------------*/
 990 static void
 991 draw_barcode_object (PrintInfo      *pi,
 992                      glLabelBarcode *object,
 993                      glMergeRecord  *record)
 994 {
 995         glBarcode *gbc;
 996         glBarcodeLine *line;
 997         glBarcodeChar *bchar;
 998         GList *li;
 999         gdouble y_offset;
1000         GnomeFont *font;
1001         gchar *text, *cstring;
1002         glTextNode          *text_node;
1003         glBarcodeStyle      style;
1004         gboolean            text_flag;
1005         gboolean            checksum_flag;
1006         guint               color;
1007         gdouble             w, h;
1008
1009         gl_debug (DEBUG_PRINT, "START");
1010
1011         text_node = gl_label_barcode_get_data (object);
1012         gl_label_barcode_get_props (object,
1013                                     &style, &text_flag, &checksum_flag);
1014         color = gl_label_object_get_line_color (GL_LABEL_OBJECT(object));
1015         gl_label_object_get_size (GL_LABEL_OBJECT(object), &w, &h);
1016
1017         text = gl_text_node_expand (text_node, record);
1018         gbc = gl_barcode_new (style, text_flag, checksum_flag, w, h, text);
1019         g_free (text);
1020         gl_text_node_free (&text_node);
1021
1022         if (gbc == NULL) {
1023
1024                 font = gnome_font_find_closest_from_weight_slant (
1025                                                GL_BARCODE_FONT_FAMILY,
1026                                                GL_BARCODE_FONT_WEIGHT,
1027                                                FALSE, 12.0);
1028                 gnome_print_setfont (pi->pc, font);
1029
1030                 gnome_print_setrgbcolor (pi->pc,
1031                                          GL_COLOR_F_RED (color),
1032                                          GL_COLOR_F_GREEN (color),
1033                                          GL_COLOR_F_BLUE (color));
1034                 gnome_print_setopacity (pi->pc,
1035                                         GL_COLOR_F_ALPHA (color));
1036
1037                 y_offset = 12.0 - fabs (gnome_font_get_descender (font));
1038                 gnome_print_moveto (pi->pc, 0.0, y_offset);
1039
1040                 gnome_print_gsave (pi->pc);
1041                 gnome_print_scale (pi->pc, 1.0, -1.0);
1042                 gnome_print_show (pi->pc, _("Invalid barcode data"));
1043                 gnome_print_grestore (pi->pc);
1044
1045         } else {
1046
1047                 for (li = gbc->lines; li != NULL; li = li->next) {
1048                         line = (glBarcodeLine *) li->data;
1049
1050                         gnome_print_moveto (pi->pc, line->x, line->y);
1051                         gnome_print_lineto (pi->pc, line->x, line->y + line->length);
1052                         gnome_print_setrgbcolor (pi->pc,
1053                                                  GL_COLOR_F_RED (color),
1054                                                  GL_COLOR_F_GREEN (color),
1055                                                  GL_COLOR_F_BLUE (color));
1056                         gnome_print_setopacity (pi->pc,
1057                                                 GL_COLOR_F_ALPHA (color));
1058                         gnome_print_setlinewidth (pi->pc, line->width);
1059                         gnome_print_stroke (pi->pc);
1060                 }
1061
1062                 for (li = gbc->chars; li != NULL; li = li->next) {
1063                         bchar = (glBarcodeChar *) li->data;
1064
1065                         font = gnome_font_find_closest_from_weight_slant (
1066                                                        GL_BARCODE_FONT_FAMILY,
1067                                                        GL_BARCODE_FONT_WEIGHT,
1068                                                        FALSE, bchar->fsize);
1069                         gnome_print_setfont (pi->pc, font);
1070
1071                         gnome_print_setrgbcolor (pi->pc,
1072                                                  GL_COLOR_F_RED (color),
1073                                                  GL_COLOR_F_GREEN (color),
1074                                                  GL_COLOR_F_BLUE (color));
1075                         gnome_print_setopacity (pi->pc,
1076                                                 GL_COLOR_F_ALPHA (color));
1077
1078                         y_offset =
1079                             bchar->fsize - fabs (gnome_font_get_descender (font));
1080
1081                         gnome_print_moveto (pi->pc, bchar->x, bchar->y+y_offset);
1082
1083                         cstring = g_strdup_printf ("%c", bchar->c);
1084                         gnome_print_gsave (pi->pc);
1085                         gnome_print_scale (pi->pc, 1.0, -1.0);
1086                         gnome_print_show (pi->pc, cstring);
1087                         gnome_print_grestore (pi->pc);
1088                         g_free (cstring);
1089
1090                 }
1091
1092                 gl_barcode_free (&gbc);
1093
1094         }
1095
1096         gl_debug (DEBUG_PRINT, "END");
1097 }
1098
1099 /*---------------------------------------------------------------------------*/
1100 /* PRIVATE.  Draw outline.                                                   */
1101 /*---------------------------------------------------------------------------*/
1102 static void
1103 draw_outline (PrintInfo *pi,
1104               glLabel   *label)
1105 {
1106         const glTemplateLabelType *label_type;
1107         gdouble                    w, h, r;
1108         gdouble                    r1, r2;
1109
1110         gl_debug (DEBUG_PRINT, "START");
1111
1112         label_type = gl_template_get_first_label_type (pi->template);
1113
1114         gnome_print_setrgbcolor (pi->pc, 0.25, 0.25, 0.25);
1115         gnome_print_setopacity (pi->pc, 1.0);
1116         gnome_print_setlinewidth (pi->pc, 0.25);
1117
1118         switch (label_type->shape) {
1119
1120         case GL_TEMPLATE_SHAPE_RECT:
1121                 gl_label_get_size (label, &w, &h);
1122                 r = label_type->size.rect.r;
1123                 if (r == 0.0) {
1124                         /* simple rectangle */
1125                         create_rectangle_path (pi->pc, 0.0, 0.0, w, h);
1126                 } else {
1127                         /* rectangle with rounded corners */
1128                         create_rounded_rectangle_path (pi->pc, 0.0, 0.0,
1129                                                        w, h, r);
1130                 }
1131                 gnome_print_stroke (pi->pc);
1132                 break;
1133
1134         case GL_TEMPLATE_SHAPE_ROUND:
1135                 /* Round style */
1136                 r1 = label_type->size.round.r;
1137                 create_ellipse_path (pi->pc, r1, r1, r1, r1);
1138                 gnome_print_stroke (pi->pc);
1139                 break;
1140
1141         case GL_TEMPLATE_SHAPE_CD:
1142                 if ((label_type->size.cd.h == 0) && (label_type->size.cd.w == 0)) {
1143                         /* CD style, round label w/ concentric round hole */
1144                         r1 = label_type->size.cd.r1;
1145                         r2 = label_type->size.cd.r2;
1146                         create_ellipse_path (pi->pc, r1, r1, r1, r1);
1147                         gnome_print_stroke (pi->pc);
1148                         create_ellipse_path (pi->pc, r1, r1, r2, r2);
1149                         gnome_print_stroke (pi->pc);
1150                 } else {
1151                         /* Business Card CD style, clipped round label w/ hole */
1152                         gl_label_get_size (label, &w, &h);
1153                         r1 = label_type->size.cd.r1;
1154                         r2 = label_type->size.cd.r2;
1155                         create_clipped_circle_path (pi->pc, w/2, h/2, w, h, r1);
1156                         gnome_print_stroke (pi->pc);
1157                         create_ellipse_path (pi->pc, w/2, h/2, r2, r2);
1158                         gnome_print_stroke (pi->pc);
1159                 }
1160                 break;
1161
1162         default:
1163                 g_warning ("Unknown template label style");
1164                 break;
1165         }
1166
1167         gl_debug (DEBUG_PRINT, "END");
1168 }
1169
1170 /*---------------------------------------------------------------------------*/
1171 /* PRIVATE.  Clip to outline.                                                */
1172 /*---------------------------------------------------------------------------*/
1173 static void
1174 clip_to_outline (PrintInfo *pi,
1175                  glLabel   *label)
1176 {
1177         const glTemplateLabelType *label_type;
1178         gdouble                    w, h, r;
1179         gdouble                    r1;
1180         gdouble                    waste;
1181
1182         gl_debug (DEBUG_PRINT, "START");
1183
1184         label_type = gl_template_get_first_label_type (pi->template);
1185
1186         switch (label_type->shape) {
1187
1188         case GL_TEMPLATE_SHAPE_RECT:
1189                 gl_label_get_size (label, &w, &h);
1190                 r = label_type->size.rect.r;
1191                 waste = label_type->waste;
1192                 if (r == 0.0) {
1193                         /* simple rectangle */
1194                         create_rectangle_path (pi->pc,
1195                                                -waste, -waste, w+2*waste, h+2*waste);
1196                 } else {
1197                         /* rectangle with rounded corners */
1198                         create_rounded_rectangle_path (pi->pc, -waste, -waste,
1199                                                        w+2*waste, h+2*waste, r);
1200                 }
1201                 gnome_print_clip (pi->pc);
1202                 break;
1203
1204         case GL_TEMPLATE_SHAPE_ROUND:
1205                 r1 = label_type->size.round.r;
1206                 waste = label_type->waste;
1207                 create_ellipse_path (pi->pc, r1, r1, r1+waste, r1+waste);
1208                 gnome_print_clip (pi->pc);
1209                 break;
1210
1211         case GL_TEMPLATE_SHAPE_CD:
1212                 waste = label_type->waste;
1213                 if ((label_type->size.cd.h == 0) && (label_type->size.cd.w == 0)) {
1214                         /* CD style, round label w/ concentric round hole */
1215                         r1 = label_type->size.cd.r1;
1216                         create_ellipse_path (pi->pc, r1, r1, r1+waste, r1+waste);
1217                 } else {
1218                         /* Business Card CD style, clipped round label w/ hole */
1219                         gl_label_get_size (label, &w, &h);
1220                         r1 = label_type->size.cd.r1;
1221                         create_clipped_circle_path (pi->pc,
1222                                                     w/2, h/2,
1223                                                     w+2*waste, h+2*waste,
1224                                                     r1+waste);
1225                 }
1226                 gnome_print_clip (pi->pc);
1227                 break;
1228
1229         default:
1230                 g_warning ("Unknown template label style");
1231                 break;
1232         }
1233
1234         gl_debug (DEBUG_PRINT, "END");
1235 }
1236
1237 /*---------------------------------------------------------------------------*/
1238 /* PRIVATE.  Clip punchouts.  (Save some ink by not printing in CD holes)    */
1239 /*                                                                           */
1240 /* Ideally this would be done in clip_to_outline, but I am not sure how to   */
1241 /* invert the region for gnome_print_clip, so instead, I will just draw      */
1242 /* a white circle on top of everything else.                                 */
1243 /*---------------------------------------------------------------------------*/
1244 static void
1245 clip_punchouts (PrintInfo *pi,
1246                 glLabel   *label)
1247 {
1248         const glTemplateLabelType *label_type;
1249         gdouble                    w, h, r2;
1250         gdouble                    waste;
1251
1252         gl_debug (DEBUG_PRINT, "START");
1253
1254         label_type = gl_template_get_first_label_type (pi->template);
1255
1256         switch (label_type->shape) {
1257
1258         case GL_TEMPLATE_SHAPE_RECT:
1259         case GL_TEMPLATE_SHAPE_ROUND:
1260                 break;
1261
1262         case GL_TEMPLATE_SHAPE_CD:
1263                 gl_label_get_size (label, &w, &h);
1264                 waste = label_type->waste;
1265                 r2    = label_type->size.cd.r2;
1266                 create_ellipse_path (pi->pc, w/2, h/2, r2-waste, r2-waste);
1267                 gnome_print_setrgbcolor (pi->pc, 1.0, 1.0, 1.0);
1268                 gnome_print_setopacity (pi->pc, 1.0);
1269                 gnome_print_fill (pi->pc);
1270                 break;
1271
1272         default:
1273                 g_warning ("Unknown template label style");
1274                 break;
1275         }
1276
1277         gl_debug (DEBUG_PRINT, "END");
1278 }
1279
1280 /*---------------------------------------------------------------------------*/
1281 /* PRIVATE.  Path creation utilities.                                        */
1282 /*---------------------------------------------------------------------------*/
1283 static void
1284 create_rectangle_path (GnomePrintContext *pc,
1285                        gdouble            x0,
1286                        gdouble            y0,
1287                        gdouble            w,
1288                        gdouble            h)
1289 {
1290         gl_debug (DEBUG_PRINT, "START");
1291
1292         gnome_print_newpath (pc);
1293         gnome_print_moveto (pc, x0, y0);
1294         gnome_print_lineto (pc, x0 + w, y0);
1295         gnome_print_lineto (pc, x0 + w, y0 + h);
1296         gnome_print_lineto (pc, x0, y0 + h);
1297         gnome_print_lineto (pc, x0, y0);
1298         gnome_print_closepath (pc);
1299
1300         gl_debug (DEBUG_PRINT, "END");
1301 }
1302
1303 static void
1304 create_ellipse_path (GnomePrintContext *pc,
1305                      gdouble            x0,
1306                      gdouble            y0,
1307                      gdouble            rx,
1308                      gdouble            ry)
1309 {
1310         gdouble x, y;
1311         gint i_theta;
1312
1313         gl_debug (DEBUG_PRINT, "START");
1314
1315         gnome_print_newpath (pc);
1316         gnome_print_moveto (pc, x0 + rx, y0);
1317         for (i_theta = ARC_FINE; i_theta <= 360; i_theta += ARC_FINE) {
1318                 x = x0 + rx * cos (i_theta * G_PI / 180.0);
1319                 y = y0 + ry * sin (i_theta * G_PI / 180.0);
1320                 gnome_print_lineto (pc, x, y);
1321         }
1322         gnome_print_closepath (pc);
1323
1324         gl_debug (DEBUG_PRINT, "END");
1325 }
1326
1327 static void
1328 create_rounded_rectangle_path (GnomePrintContext *pc,
1329                                gdouble            x0,
1330                                gdouble            y0,
1331                                gdouble            w,
1332                                gdouble            h,
1333                                gdouble            r)
1334 {
1335         gdouble x, y;
1336         gint i_theta;
1337
1338         gl_debug (DEBUG_PRINT, "START");
1339
1340         gnome_print_newpath (pc);
1341
1342         gnome_print_moveto (pc, x0 + r, y0);
1343         for (i_theta = ARC_COURSE; i_theta <= 90; i_theta += ARC_COURSE) {
1344                 x = x0 + r - r * sin (i_theta * G_PI / 180.0);
1345                 y = y0 + r - r * cos (i_theta * G_PI / 180.0);
1346                 gnome_print_lineto (pc, x, y);
1347         }
1348         for (i_theta = 0; i_theta <= 90; i_theta += ARC_COURSE) {
1349                 x = x0 + r - r * cos (i_theta * G_PI / 180.0);
1350                 y = y0 + (h - r) + r * sin (i_theta * G_PI / 180.0);
1351                 gnome_print_lineto (pc, x, y);
1352         }
1353         for (i_theta = 0; i_theta <= 90; i_theta += ARC_COURSE) {
1354                 x = x0 + (w - r) + r * sin (i_theta * G_PI / 180.0);
1355                 y = y0 + (h - r) + r * cos (i_theta * G_PI / 180.0);
1356                 gnome_print_lineto (pc, x, y);
1357         }
1358         for (i_theta = 0; i_theta <= 90; i_theta += ARC_COURSE) {
1359                 x = x0 + (w - r) + r * cos (i_theta * G_PI / 180.0);
1360                 y = y0 + r - r * sin (i_theta * G_PI / 180.0);
1361                 gnome_print_lineto (pc, x, y);
1362         }
1363         gnome_print_lineto (pc, x0 + r, y0);
1364
1365         gnome_print_closepath (pc);
1366
1367         gl_debug (DEBUG_PRINT, "END");
1368 }
1369
1370 static void
1371 create_clipped_circle_path (GnomePrintContext *pc,
1372                             gdouble            x0,
1373                             gdouble            y0,
1374                             gdouble            w,
1375                             gdouble            h,
1376                             gdouble            r)
1377 {
1378         gdouble x, y;
1379         gdouble theta1, theta2;
1380         gint    i_theta;
1381
1382         gl_debug (DEBUG_PRINT, "START");
1383
1384         theta1 = (180.0/G_PI) * acos (w / (2.0*r));
1385         theta2 = (180.0/G_PI) * asin (h / (2.0*r));
1386
1387         gnome_print_newpath (pc);
1388
1389         x = x0 + r * cos (theta1 * G_PI / 180.0);
1390         y = y0 + r * sin (theta1 * G_PI / 180.0);
1391         gnome_print_moveto (pc, x, y);
1392
1393         for ( i_theta = theta1 + ARC_FINE; i_theta < theta2; i_theta +=ARC_FINE ) {
1394                 x = x0 + r * cos (i_theta * G_PI / 180.0);
1395                 y = y0 + r * sin (i_theta * G_PI / 180.0);
1396                 gnome_print_lineto (pc, x, y);
1397         }
1398
1399         x = x0 + r * cos (theta2 * G_PI / 180.0);
1400         y = y0 + r * sin (theta2 * G_PI / 180.0);
1401         gnome_print_lineto (pc, x, y);
1402
1403         if ( fabs (theta2 - 90.0) > GNOME_CANVAS_EPSILON ) {
1404                 x = x0 + r * cos ((180-theta2) * G_PI / 180.0);
1405                 y = y0 + r * sin ((180-theta2) * G_PI / 180.0);
1406                 gnome_print_lineto (pc, x, y);
1407         }
1408
1409         for ( i_theta = 180-theta2+ARC_FINE; i_theta < (180-theta1); i_theta +=ARC_FINE ) {
1410                 x = x0 + r * cos (i_theta * G_PI / 180.0);
1411                 y = y0 + r * sin (i_theta * G_PI / 180.0);
1412                 gnome_print_lineto (pc, x, y);
1413         }
1414
1415         x = x0 + r * cos ((180-theta1) * G_PI / 180.0);
1416         y = y0 + r * sin ((180-theta1) * G_PI / 180.0);
1417         gnome_print_lineto (pc, x, y);
1418
1419         if ( fabs (theta1) > GNOME_CANVAS_EPSILON ) {
1420                 x = x0 + r * cos ((180+theta1) * G_PI / 180.0);
1421                 y = y0 + r * sin ((180+theta1) * G_PI / 180.0);
1422                 gnome_print_lineto (pc, x, y);
1423         }
1424
1425         for ( i_theta = 180+theta1+ARC_FINE; i_theta < (180+theta2); i_theta +=ARC_FINE ) {
1426                 x = x0 + r * cos (i_theta * G_PI / 180.0);
1427                 y = y0 + r * sin (i_theta * G_PI / 180.0);
1428                 gnome_print_lineto (pc, x, y);
1429         }
1430
1431         x = x0 + r * cos ((180+theta2) * G_PI / 180.0);
1432         y = y0 + r * sin ((180+theta2) * G_PI / 180.0);
1433         gnome_print_lineto (pc, x, y);
1434
1435         if ( fabs (theta2 - 90.0) > GNOME_CANVAS_EPSILON ) {
1436                 x = x0 + r * cos ((360-theta2) * G_PI / 180.0);
1437                 y = y0 + r * sin ((360-theta2) * G_PI / 180.0);
1438                 gnome_print_lineto (pc, x, y);
1439         }
1440
1441         for ( i_theta = 360-theta2+ARC_FINE; i_theta < (360-theta1); i_theta +=ARC_FINE ) {
1442                 x = x0 + r * cos (i_theta * G_PI / 180.0);
1443                 y = y0 + r * sin (i_theta * G_PI / 180.0);
1444                 gnome_print_lineto (pc, x, y);
1445         }
1446
1447         if ( fabs (theta1) > GNOME_CANVAS_EPSILON ) {
1448                 x = x0 + r * cos ((360-theta1) * G_PI / 180.0);
1449                 y = y0 + r * sin ((360-theta1) * G_PI / 180.0);
1450                 gnome_print_lineto (pc, x, y);
1451         }
1452
1453         x = x0 + r * cos (theta1 * G_PI / 180.0);
1454         y = y0 + r * sin (theta1 * G_PI / 180.0);
1455         gnome_print_lineto (pc, x, y);
1456
1457         gnome_print_closepath (pc);
1458
1459         gl_debug (DEBUG_PRINT, "END");
1460 }
1461
1462 #ifndef NO_ALPHA_HACK
1463 /*---------------------------------------------------------------------------*/
1464 /* PRIVATE.  Extract a copy of rgba pixels, removing alpha by compositing    */
1465 /* with a white background.                                                  */
1466 /*                                                                           */
1467 /* This is currently needed due to the lousy job gnome-print does in         */
1468 /* rendering images with alpha channels to PS.  This sacrafices the ability  */
1469 /* to do compositing of images with other items in the background.           */
1470 /*---------------------------------------------------------------------------*/
1471 static guchar *
1472 get_pixels_as_rgb (const GdkPixbuf *pixbuf)
1473 {
1474         gint             bits_per_sample, channels;
1475         gboolean         has_alpha;
1476         gint             width, height, rowstride;
1477         gulong           bytes;
1478         guchar          *buf_src, *buf_dest;
1479         guchar          *p_src, *p_dest;
1480         gint             ix, iy;
1481         guchar           r, g, b, a;
1482         gdouble          alpha, beta;
1483
1484         gl_debug (DEBUG_PRINT, "START");
1485
1486         g_return_val_if_fail (pixbuf && GDK_IS_PIXBUF (pixbuf), NULL);
1487
1488         /* extract pixels and parameters from pixbuf. */
1489         buf_src         = gdk_pixbuf_get_pixels (pixbuf);
1490         bits_per_sample = gdk_pixbuf_get_bits_per_sample (pixbuf);
1491         channels        = gdk_pixbuf_get_n_channels (pixbuf);
1492         has_alpha       = gdk_pixbuf_get_has_alpha (pixbuf);
1493         width           = gdk_pixbuf_get_width (pixbuf);
1494         height          = gdk_pixbuf_get_height (pixbuf);
1495         rowstride       = gdk_pixbuf_get_rowstride (pixbuf);
1496
1497         /* validate assumptions about pixbuf. */
1498         g_return_val_if_fail (buf_src, NULL);
1499         g_return_val_if_fail (bits_per_sample == 8, NULL);
1500         g_return_val_if_fail (channels == 4, NULL);
1501         g_return_val_if_fail (has_alpha, NULL);
1502         g_return_val_if_fail (width > 0, NULL);
1503         g_return_val_if_fail (height > 0, NULL);
1504         g_return_val_if_fail (rowstride > 0, NULL);
1505
1506         /* Allocate a destination buffer */
1507         bytes = height * rowstride;
1508         gl_debug (DEBUG_PRINT, "bytes = %d", bytes);
1509         buf_dest = g_try_malloc (bytes);
1510         if (!buf_dest) {
1511                 return NULL;
1512         }
1513         gl_debug (DEBUG_PRINT, "buf_dest = %x", buf_dest);
1514
1515         /* Copy pixels, transforming rgba to rgb by compositing with a white bg. */
1516         p_src  = buf_src;
1517         p_dest = buf_dest;
1518         for ( iy=0; iy < height; iy++ ) {
1519
1520                 p_src  = buf_src + iy*rowstride;
1521                 p_dest = buf_dest + iy*rowstride;
1522
1523                 for ( ix=0; ix < width; ix++ ) {
1524
1525                         r = *p_src++;
1526                         g = *p_src++;
1527                         b = *p_src++;
1528                         a = *p_src++;
1529
1530                         alpha = a / 255.0;
1531                         beta  = 1.0 - alpha;
1532
1533                         *p_dest++ = (guchar) (alpha*r + beta*255 + 0.5);
1534                         *p_dest++ = (guchar) (alpha*g + beta*255 + 0.5);
1535                         *p_dest++ = (guchar) (alpha*b + beta*255 + 0.5);
1536
1537                 }
1538
1539         }
1540
1541         gl_debug (DEBUG_PRINT, "START");
1542
1543         return buf_dest;
1544 }
1545 #endif