about-dialog.c 18.5 KB
Newer Older
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
/* The GIMP -- an image manipulation program
 * Copyright (C) 1995 Spencer Kimball and Peter Mattis
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */
18
19
20

#include "config.h"

Elliot Lee's avatar
Elliot Lee committed
21
22
#include <stdio.h>
#include <stdlib.h>
Tor Lillqvist's avatar
Tor Lillqvist committed
23
#include <string.h>
Elliot Lee's avatar
Elliot Lee committed
24
#include <time.h>
Manish Singh's avatar
Manish Singh committed
25

26
#include <gtk/gtk.h>
Manish Singh's avatar
Manish Singh committed
27
#include <gdk/gdkkeysyms.h>
Manish Singh's avatar
Manish Singh committed
28

29
#include "libgimpmath/gimpmath.h"
30
#include "libgimpbase/gimpbase.h"
31
#include "libgimpwidgets/gimpwidgets.h"
32

Michael Natterer's avatar
Michael Natterer committed
33
#include "core/core-types.h"
Sven Neumann's avatar
Sven Neumann committed
34

Michael Natterer's avatar
Michael Natterer committed
35
#include "core/gimptoolinfo.h"
36

Michael Natterer's avatar
Michael Natterer committed
37
38
#include "widgets/gimpdnd.h"

39
#include "about-dialog.h"
Michael Natterer's avatar
Michael Natterer committed
40
#include "authors.h"
41

42
#include "appenv.h"
43

44
45
#include "libgimp/gimpintl.h"

46
47
#include "pixmaps/wilber2.xpm"

48

Elliot Lee's avatar
Elliot Lee committed
49
#define ANIMATION_STEPS 16
50
#define ANIMATION_SIZE   2
Elliot Lee's avatar
Elliot Lee committed
51

52
53
54
55
56
57
58
59
60
61
62
63
static gboolean  about_dialog_load_logo   (GtkWidget      *window);
static void      about_dialog_destroy     (GtkObject      *object,
					   gpointer        data);
static void      about_dialog_unmap       (GtkWidget      *widget,
					   GdkEvent       *event,
					   gpointer        data);
static gint      about_dialog_logo_expose (GtkWidget      *widget,
					   GdkEventExpose *event,
					   gpointer        data);
static gint      about_dialog_button      (GtkWidget      *widget,
					   GdkEventButton *event,
					   gpointer        data);
Manish Singh's avatar
Manish Singh committed
64
65
66
static gint      about_dialog_key         (GtkWidget      *widget,
					   GdkEventKey    *event,
					   gpointer        data);
67
static void      about_dialog_tool_drop   (GtkWidget      *widget,
68
					   GimpViewable   *viewable,
69
70
					   gpointer        data);
static gint      about_dialog_timer       (gpointer        data);
Elliot Lee's avatar
Elliot Lee committed
71
72


73
74
75
76
77
78
static GtkWidget *about_dialog     = NULL;
static GtkWidget *logo_area        = NULL;
static GtkWidget *scroll_area      = NULL;
static GdkPixmap *logo_pixmap      = NULL;
static GdkPixmap *scroll_pixmap    = NULL;
static guchar    *dissolve_map     = NULL;
79
80
static gint       dissolve_width;
static gint       dissolve_height;
81
82
83
84
85
86
87
88
static gint       logo_width       = 0;
static gint       logo_height      = 0;
static gboolean   do_animation     = FALSE;
static gboolean   do_scrolling     = FALSE;
static gint       scroll_state     = 0;
static gint       frame            = 0;
static gint       offset           = 0;
static gint       timer            = 0;
Manish Singh's avatar
Manish Singh committed
89
static gint       hadja_state      = 0;
90
91
92
93
94
95
static gchar    **scroll_text      = authors;
static gint       nscroll_texts    = sizeof (authors) / sizeof (authors[0]);
static gint       scroll_text_widths[sizeof (authors) / sizeof (authors[0])];
static gint       cur_scroll_text  = 0;
static gint       cur_scroll_index = 0;
static gint       shuffle_array[sizeof (authors) / sizeof (authors[0])];
96

Elliot Lee's avatar
Elliot Lee committed
97

98
99
100
101
102
103
104
static gchar *drop_text[] = 
{ 
  "We are The GIMP." ,
  "Prepare to be manipulated.",
  "Resistance is futile."
};

Manish Singh's avatar
Manish Singh committed
105
106
107
108
static gchar *hadja_text[] =
{
  "Hadjaha!",
  "Nej!",
109
#ifndef GDK_USE_UTF8_MBS
Manish Singh's avatar
Manish Singh committed
110
  "Tvrtom!"
111
112
113
#else
  "Tvärtom!"
#endif
Manish Singh's avatar
Manish Singh committed
114
};
115

116
GtkWidget *
117
about_dialog_create (void)
Elliot Lee's avatar
Elliot Lee committed
118
119
{
  GtkWidget *vbox;
120
  GtkWidget *aboutframe;
Elliot Lee's avatar
Elliot Lee committed
121
122
  GtkWidget *label;
  GtkWidget *alignment;
123
#if 0
124
125
  GtkStyle  *style;
  GdkFont   *font;
126
#endif
127
128
129
  gint       max_width;
  gint       i;
  gchar     *label_text;
Elliot Lee's avatar
Elliot Lee committed
130

131
  if (! about_dialog)
Elliot Lee's avatar
Elliot Lee committed
132
    {
133
134
135
      about_dialog = gtk_window_new (GTK_WINDOW_TOPLEVEL);
      gtk_window_set_type_hint (GTK_WINDOW (about_dialog),
				GDK_WINDOW_TYPE_HINT_DIALOG);
136
      gtk_window_set_wmclass (GTK_WINDOW (about_dialog), "about_dialog", "Gimp");
137
      gtk_window_set_title (GTK_WINDOW (about_dialog), _("About the GIMP"));
Elliot Lee's avatar
Elliot Lee committed
138
      gtk_window_set_policy (GTK_WINDOW (about_dialog), FALSE, FALSE, FALSE);
139
140
      gtk_window_set_position (GTK_WINDOW (about_dialog), GTK_WIN_POS_CENTER);

141
142
      gimp_help_connect (about_dialog, gimp_standard_help_func,
			 "dialogs/about.html");
143

144
145
146
147
148
149
150
151
152
153
154
155
      g_signal_connect (G_OBJECT (about_dialog), "destroy",
			G_CALLBACK (about_dialog_destroy),
			NULL);
      g_signal_connect (G_OBJECT (about_dialog), "unmap_event",
			G_CALLBACK (about_dialog_unmap),
			NULL);
      g_signal_connect (G_OBJECT (about_dialog), "button_press_event",
			G_CALLBACK (about_dialog_button),
			NULL);
      g_signal_connect (G_OBJECT (about_dialog), "key_press_event",
			G_CALLBACK (about_dialog_key),
			NULL);
Manish Singh's avatar
Manish Singh committed
156
      
157
      /*  dnd stuff  */
158
159
160
161
162
163
164
165
      gimp_gtk_drag_dest_set_by_type (about_dialog,
				      GTK_DEST_DEFAULT_MOTION |
				      GTK_DEST_DEFAULT_DROP,
				      GIMP_TYPE_TOOL_INFO,
				      GDK_ACTION_COPY); 
      gimp_dnd_viewable_dest_set (about_dialog,
				  GIMP_TYPE_TOOL_INFO,
				  about_dialog_tool_drop, NULL);
166

Elliot Lee's avatar
Elliot Lee committed
167
168
169
170
171
172
      gtk_widget_set_events (about_dialog, GDK_BUTTON_PRESS_MASK);

      if (!about_dialog_load_logo (about_dialog))
	{
	  gtk_widget_destroy (about_dialog);
	  about_dialog = NULL;
173
	  return NULL;
Elliot Lee's avatar
Elliot Lee committed
174
175
176
	}

      vbox = gtk_vbox_new (FALSE, 1);
177
      gtk_container_set_border_width (GTK_CONTAINER (vbox), 1);
Elliot Lee's avatar
Elliot Lee committed
178
179
180
      gtk_container_add (GTK_CONTAINER (about_dialog), vbox);
      gtk_widget_show (vbox);

181
182
      aboutframe = gtk_frame_new (NULL);
      gtk_frame_set_shadow_type (GTK_FRAME (aboutframe), GTK_SHADOW_IN);
183
      gtk_container_set_border_width (GTK_CONTAINER (aboutframe), 0);
184
185
      gtk_box_pack_start (GTK_BOX (vbox), aboutframe, TRUE, TRUE, 0);
      gtk_widget_show (aboutframe);
Elliot Lee's avatar
Elliot Lee committed
186
187

      logo_area = gtk_drawing_area_new ();
188
189
      gtk_drawing_area_size (GTK_DRAWING_AREA (logo_area),
			     logo_width, logo_height);
Elliot Lee's avatar
Elliot Lee committed
190
      gtk_widget_set_events (logo_area, GDK_EXPOSURE_MASK);
191
      gtk_container_add (GTK_CONTAINER (aboutframe), logo_area);
Elliot Lee's avatar
Elliot Lee committed
192
193
      gtk_widget_show (logo_area);

194
195
196
197
      g_signal_connect (G_OBJECT (logo_area), "expose_event",
			G_CALLBACK (about_dialog_logo_expose),
			NULL);

Elliot Lee's avatar
Elliot Lee committed
198
199
200
      gtk_widget_realize (logo_area);
      gdk_window_set_background (logo_area->window, &logo_area->style->black);

201
      /* this is a font, provide only one single font definition */
202
203
204
205
#ifdef __GNUC__
#warning FIXME: font description
#endif
#if 0
206
207
208
209
210
211
      font = gdk_font_load (_("-*-helvetica-medium-r-normal--*-140-*-*-*-*-*-*"));
      if (font)
	{
	  style = gtk_style_new ();
	  gdk_font_unref (style->font);
	  style->font = font;
212
	  gdk_font_ref (style->font);
213
214
215
	  gtk_widget_push_style (style);
	  gtk_style_unref (style);
	}
216
#endif
217
218
      label_text = g_strdup_printf (_("Version %s brought to you by"),
				    GIMP_VERSION);
219
      label = gtk_label_new (label_text);
220
221
      g_free (label_text);
      label_text = NULL;
Elliot Lee's avatar
Elliot Lee committed
222
223
224
      gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, TRUE, 0);
      gtk_widget_show (label);

Sven Neumann's avatar
Sven Neumann committed
225
      label = gtk_label_new ("Spencer Kimball & Peter Mattis");
Elliot Lee's avatar
Elliot Lee committed
226
227
228
      gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, TRUE, 0);
      gtk_widget_show (label);

229
#if 0
Elliot Lee's avatar
Elliot Lee committed
230
      gtk_widget_pop_style ();
231
#endif
Elliot Lee's avatar
Elliot Lee committed
232
233
234
235
236

      alignment = gtk_alignment_new (0.5, 0.5, 0.0, 0.0);
      gtk_box_pack_start (GTK_BOX (vbox), alignment, FALSE, TRUE, 0);
      gtk_widget_show (alignment);

237
238
      aboutframe = gtk_frame_new (NULL);
      gtk_frame_set_shadow_type (GTK_FRAME (aboutframe), GTK_SHADOW_IN);
239
      gtk_container_set_border_width (GTK_CONTAINER (aboutframe), 0);
240
241
      gtk_container_add (GTK_CONTAINER (alignment), aboutframe);
      gtk_widget_show (aboutframe);
Elliot Lee's avatar
Elliot Lee committed
242
243
244
245

      max_width = 0;
      for (i = 0; i < nscroll_texts; i++)
	{
246
247
	  scroll_text_widths[i] = gdk_string_width (aboutframe->style->font,
						    scroll_text[i]);
Elliot Lee's avatar
Elliot Lee committed
248
249
	  max_width = MAX (max_width, scroll_text_widths[i]);
	}
250
251
252
253
254
      for (i = 0; i < (sizeof (drop_text) / sizeof (drop_text[0])); i++)
	{
	  max_width = MAX (max_width, 
			   gdk_string_width (aboutframe->style->font, drop_text[i]));
	}
Manish Singh's avatar
Manish Singh committed
255
256
257
258
259
      for (i = 0; i < (sizeof (hadja_text) / sizeof (hadja_text[0])); i++)
	{
	  max_width = MAX (max_width,
			   gdk_string_width (aboutframe->style->font, hadja_text[i]));
	}
Elliot Lee's avatar
Elliot Lee committed
260
261
262
      scroll_area = gtk_drawing_area_new ();
      gtk_drawing_area_size (GTK_DRAWING_AREA (scroll_area),
			     max_width + 10,
263
264
265
266
			     aboutframe->style->font->ascent +
			     aboutframe->style->font->descent);
      gtk_widget_set_events (scroll_area, GDK_BUTTON_PRESS_MASK);
      gtk_container_add (GTK_CONTAINER (aboutframe), scroll_area);
Elliot Lee's avatar
Elliot Lee committed
267
268
      gtk_widget_show (scroll_area);

269
      label = gtk_label_new (_("Please visit http://www.gimp.org/ for more info"));
270
271
272
      gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, TRUE, 0);
      gtk_widget_show (label);

Elliot Lee's avatar
Elliot Lee committed
273
      gtk_widget_realize (scroll_area);
274
275
      gdk_window_set_background (scroll_area->window,
				 &scroll_area->style->white);
Elliot Lee's avatar
Elliot Lee committed
276
277
    }

278
  if (! GTK_WIDGET_VISIBLE (about_dialog))
Elliot Lee's avatar
Elliot Lee committed
279
280
281
    {
      gtk_widget_show (about_dialog);

282
283
284
285
286
      do_animation    = TRUE;
      do_scrolling    = FALSE;
      scroll_state    = 0;
      frame           = 0;
      offset          = 0;
287
      cur_scroll_text = 0;
Elliot Lee's avatar
Elliot Lee committed
288

289
      if (! double_speed && hadja_state != 7)
Elliot Lee's avatar
Elliot Lee committed
290
	{
291
292
293
294
	  for (i = 0; i < nscroll_texts; i++) 
	    {
	      shuffle_array[i] = i;
	    }
Elliot Lee's avatar
Elliot Lee committed
295

296
	  for (i = 0; i < nscroll_texts; i++) 
Elliot Lee's avatar
Elliot Lee committed
297
	    {
298
299
300
301
302
303
304
305
306
307
308
	      gint j;

	      j = rand() % nscroll_texts;
	      if (i != j) 
		{
		  gint t;

		  t = shuffle_array[j];
		  shuffle_array[j] = shuffle_array[i];
		  shuffle_array[i] = t;
		}
Elliot Lee's avatar
Elliot Lee committed
309
	    }
310
	  cur_scroll_text = rand() % nscroll_texts;
Elliot Lee's avatar
Elliot Lee committed
311
312
313
314
	}
    }
  else 
    {
315
      gdk_window_raise (about_dialog->window);
Elliot Lee's avatar
Elliot Lee committed
316
    }
317
318

  return about_dialog;
Elliot Lee's avatar
Elliot Lee committed
319
320
}

321
static gboolean
Elliot Lee's avatar
Elliot Lee committed
322
323
324
about_dialog_load_logo (GtkWidget *window)
{
  GtkWidget *preview;
325
326
327
328
329
330
331
  GdkGC     *gc;
  gchar      buf[1024];
  gchar     *filename;
  guchar    *pixelrow;
  FILE      *fp;
  gint       count;
  gint       i, j, k;
Elliot Lee's avatar
Elliot Lee committed
332
333
334
335

  if (logo_pixmap)
    return TRUE;

336
337
338
339
340
341
  filename = g_strconcat (gimp_data_directory (),
			  G_DIR_SEPARATOR_S,
			  "gimp_logo.ppm",
			  NULL);
  fp = fopen (filename, "rb");
  g_free (filename);
Elliot Lee's avatar
Elliot Lee committed
342
343

  if (!fp)
344
    return FALSE;
Elliot Lee's avatar
Elliot Lee committed
345
346

  fgets (buf, 1024, fp);
347
348

  if (strncmp (buf, "P6", 2) != 0)
Elliot Lee's avatar
Elliot Lee committed
349
350
    {
      fclose (fp);
351
      return FALSE;
Elliot Lee's avatar
Elliot Lee committed
352
353
354
355
356
357
358
    }

  fgets (buf, 1024, fp);
  fgets (buf, 1024, fp);
  sscanf (buf, "%d %d", &logo_width, &logo_height);

  fgets (buf, 1024, fp);
359
  if (strncmp (buf, "255", 3) != 0)
Elliot Lee's avatar
Elliot Lee committed
360
361
    {
      fclose (fp);
362
      return FALSE;
Elliot Lee's avatar
Elliot Lee committed
363
364
365
366
367
368
369
370
    }

  preview = gtk_preview_new (GTK_PREVIEW_COLOR);
  gtk_preview_size (GTK_PREVIEW (preview), logo_width, logo_height);
  pixelrow = g_new (guchar, logo_width * 3);

  for (i = 0; i < logo_height; i++)
    {
371
      count = fread (pixelrow, sizeof (guchar), logo_width * 3, fp);
Elliot Lee's avatar
Elliot Lee committed
372
373
374
375
376
      if (count != (logo_width * 3))
	{
	  gtk_widget_destroy (preview);
	  g_free (pixelrow);
	  fclose (fp);
377
	  return FALSE;
Elliot Lee's avatar
Elliot Lee committed
378
379
380
381
382
383
	}

      gtk_preview_draw_row (GTK_PREVIEW (preview), pixelrow, 0, i, logo_width);
    }

  gtk_widget_realize (window);
384
385
386
  logo_pixmap = gdk_pixmap_new (window->window, logo_width, logo_height, 
				gtk_preview_get_visual ()->depth);
  gc = gdk_gc_new (logo_pixmap);
Elliot Lee's avatar
Elliot Lee committed
387
  gtk_preview_put (GTK_PREVIEW (preview),
388
		   logo_pixmap, gc,
Elliot Lee's avatar
Elliot Lee committed
389
		   0, 0, 0, 0, logo_width, logo_height);
390
  gdk_gc_destroy (gc);
Elliot Lee's avatar
Elliot Lee committed
391

392
  gtk_widget_unref (preview);
Elliot Lee's avatar
Elliot Lee committed
393
394
395
396
  g_free (pixelrow);

  fclose (fp);

397
398
399
400
  dissolve_width =
    (logo_width / ANIMATION_SIZE) + (logo_width % ANIMATION_SIZE == 0 ? 0 : 1);
  dissolve_height =
    (logo_height / ANIMATION_SIZE) + (logo_height % ANIMATION_SIZE == 0 ? 0 : 1);
Elliot Lee's avatar
Elliot Lee committed
401
402
403
404
405
406
407
408
409
410
411
412
413

  dissolve_map = g_new (guchar, dissolve_width * dissolve_height);

  srand (time (NULL));

  for (i = 0, k = 0; i < dissolve_height; i++)
    for (j = 0; j < dissolve_width; j++, k++)
      dissolve_map[k] = rand () % ANIMATION_STEPS;

  return TRUE;
}

static void
414
415
about_dialog_destroy (GtkObject *object,
		      gpointer   data)
Elliot Lee's avatar
Elliot Lee committed
416
417
{
  about_dialog = NULL;
418
  about_dialog_unmap (NULL, NULL, NULL);
Elliot Lee's avatar
Elliot Lee committed
419
420
421
}

static void
422
423
424
about_dialog_unmap (GtkWidget *widget,
		    GdkEvent  *event,
		    gpointer   data)
Elliot Lee's avatar
Elliot Lee committed
425
426
427
428
429
430
431
432
{
  if (timer)
    {
      gtk_timeout_remove (timer);
      timer = 0;
    }
}

433
static gint
Elliot Lee's avatar
Elliot Lee committed
434
about_dialog_logo_expose (GtkWidget      *widget,
435
436
			  GdkEventExpose *event,
			  gpointer        data)
Elliot Lee's avatar
Elliot Lee committed
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
{
  if (do_animation)
    {
      if (!timer)
	{
	  about_dialog_timer (widget);
	  timer = gtk_timeout_add (75, about_dialog_timer, NULL);
	}
    }
  else
    {
      /* If we draw beyond the boundaries of the pixmap, then X
	 will generate an expose area for those areas, starting
	 an infinite cycle. We now set allow_grow = FALSE, so
	 the drawing area can never be bigger than the preview.
         Otherwise, it would be necessary to intersect event->area
         with the pixmap boundary rectangle. */

      gdk_draw_pixmap (widget->window,
		       widget->style->black_gc,
		       logo_pixmap, 
		       event->area.x, event->area.y,
		       event->area.x, event->area.y,
		       event->area.width, event->area.height);
    }

  return FALSE;
}

466
static gint
Elliot Lee's avatar
Elliot Lee committed
467
about_dialog_button (GtkWidget      *widget,
468
469
		     GdkEventButton *event,
		     gpointer        data)
Elliot Lee's avatar
Elliot Lee committed
470
471
472
473
474
475
476
477
478
479
480
{
  if (timer)
    gtk_timeout_remove (timer);
  timer = 0;
  frame = 0;

  gtk_widget_hide (about_dialog);

  return FALSE;
}

Manish Singh's avatar
Manish Singh committed
481
482
483
484
485
486
487
static gint
about_dialog_key (GtkWidget      *widget,
		  GdkEventKey    *event,
		  gpointer        data)
{
  gint i;
  
488
489
490
  if (hadja_state == 7)
    return FALSE;
    
Manish Singh's avatar
Manish Singh committed
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
  switch (event->keyval)
    {
    case GDK_h:
    case GDK_H:
      if (hadja_state == 0 || hadja_state == 5)
	hadja_state++;
      else
	hadja_state = 1;
      break;
    case GDK_a:
    case GDK_A:
      if (hadja_state == 1 || hadja_state == 4 || hadja_state == 6)
	hadja_state++;
      else
	hadja_state = 0;
      break;
    case GDK_d:
    case GDK_D:
      if (hadja_state == 2)
	hadja_state++;
      else
	hadja_state = 0;
      break;
    case GDK_j:
    case GDK_J:
      if (hadja_state == 3)
	hadja_state++;
      else
	hadja_state = 0;
      break;
    default:
      hadja_state = 0;
    }

  if (hadja_state == 7)
    {
      scroll_text = hadja_text;
      nscroll_texts = sizeof (hadja_text) / sizeof (hadja_text[0]);
      
      for (i = 0; i < nscroll_texts; i++)
	{
	  shuffle_array[i] = i;
	  scroll_text_widths[i] = gdk_string_width (scroll_area->style->font,
534
						    scroll_text[i]);
Manish Singh's avatar
Manish Singh committed
535
536
	}
      
537
      scroll_state     = 0;
Manish Singh's avatar
Manish Singh committed
538
      cur_scroll_index = 0;
539
540
      cur_scroll_text  = 0;
      offset           = 0;
Manish Singh's avatar
Manish Singh committed
541
542
543
544
545
    }
  
  return FALSE;
}

546
static void
547
548
549
about_dialog_tool_drop (GtkWidget    *widget,
			GimpViewable *viewable,
			gpointer      data)
550
551
552
{
  GdkPixmap *pixmap = NULL;
  GdkBitmap *mask   = NULL;
553
554
555
  gint       width  = 0;
  gint       height = 0;
  gint       i;
556
  
557
558
559
560
561
562
563
564
  if (do_animation)
    return;

  if (timer)
    gtk_timeout_remove (timer);

  timer = gtk_timeout_add (75, about_dialog_timer, NULL);

565
  frame        = 0;
566
567
568
569
570
571
572
573
574
575
  do_animation = TRUE;
  do_scrolling = FALSE;

  gdk_draw_rectangle (logo_pixmap,
		      logo_area->style->white_gc,
		      TRUE,
		      0, 0,
		      logo_area->allocation.width,
		      logo_area->allocation.height);

576
577
578
579
  pixmap = gdk_pixmap_create_from_xpm_d (widget->window,
					 &mask,
					 NULL,
					 wilber2_xpm);
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603

  gdk_window_get_size (pixmap, &width, &height);

  if (logo_area->allocation.width  >= width &&
      logo_area->allocation.height >= height)
    {
      gint x, y;

      x = (logo_area->allocation.width  - width) / 2;
      y = (logo_area->allocation.height - height) / 2;

      gdk_gc_set_clip_mask (logo_area->style->black_gc, mask);
      gdk_gc_set_clip_origin (logo_area->style->black_gc, x, y);

      gdk_draw_pixmap (logo_pixmap,
                       logo_area->style->black_gc,
                       pixmap, 0, 0,
                       x, y,
                       width, height);

      gdk_gc_set_clip_mask (logo_area->style->black_gc, NULL);
      gdk_gc_set_clip_origin (logo_area->style->black_gc, 0, 0);
    }

Sven Neumann's avatar
Sven Neumann committed
604
605
  gdk_drawable_unref (pixmap);
  gdk_drawable_unref (mask);
606

607
608
  scroll_text = drop_text;
  nscroll_texts = sizeof (drop_text) / sizeof (drop_text[0]);
609
610
611
612
613
614
615
616

  for (i = 0; i < nscroll_texts; i++)
    {
      shuffle_array[i] = i;
      scroll_text_widths[i] = gdk_string_width (scroll_area->style->font,
						scroll_text[i]);
    }

617
  scroll_state     = 0;
618
  cur_scroll_index = 0;
619
620
  cur_scroll_text  = 0;
  offset           = 0;
621

622
623
624
  double_speed = TRUE;
}

625
static gint
Elliot Lee's avatar
Elliot Lee committed
626
627
628
629
630
631
632
633
634
about_dialog_timer (gpointer data)
{
  gint i, j, k;
  gint return_val;

  return_val = TRUE;

  if (do_animation)
    {
635
      if (logo_area->allocation.width != 1)
Elliot Lee's avatar
Elliot Lee committed
636
	{
637
638
	  for (i = 0, k = 0; i < dissolve_height; i++)
	    for (j = 0; j < dissolve_width; j++, k++)
Manish Singh's avatar
Manish Singh committed
639
	      if (frame == dissolve_map[k])
640
641
642
643
		{
		  gdk_draw_pixmap (logo_area->window,
				   logo_area->style->black_gc,
				   logo_pixmap,
644
645
				   j * ANIMATION_SIZE, i * ANIMATION_SIZE,
				   j * ANIMATION_SIZE, i * ANIMATION_SIZE,
646
647
648
649
650
651
652
653
654
				   ANIMATION_SIZE, ANIMATION_SIZE);
		}

	  frame += 1;

	  if (frame == ANIMATION_STEPS)
	    {
	      do_animation = FALSE;
	      do_scrolling = TRUE;
655
	      frame        = 0;
Elliot Lee's avatar
Elliot Lee committed
656

657
	      timer = gtk_timeout_add (75, about_dialog_timer, NULL);
Elliot Lee's avatar
Elliot Lee committed
658

659
660
	      return FALSE;
	    }
Elliot Lee's avatar
Elliot Lee committed
661
662
663
664
665
	}
    }

  if (do_scrolling)
    {
666
      if (! scroll_pixmap)
667
668
669
670
671
	scroll_pixmap = gdk_pixmap_new (scroll_area->window,
					scroll_area->allocation.width,
					scroll_area->allocation.height,
					-1);

Elliot Lee's avatar
Elliot Lee committed
672
673
674
675
676
677
678
679
680
681
682
683
684
685
      switch (scroll_state)
	{
	case 1:
	  scroll_state = 2;
	  timer = gtk_timeout_add (700, about_dialog_timer, NULL);
	  return_val = FALSE;
	  break;
	case 2:
	  scroll_state = 3;
	  timer = gtk_timeout_add (75, about_dialog_timer, NULL);
	  return_val = FALSE;
	  break;
	}

686
687
      if (offset > (scroll_text_widths[cur_scroll_text] +
		    scroll_area->allocation.width))
Elliot Lee's avatar
Elliot Lee committed
688
689
690
691
692
	{
	  scroll_state = 0;
	  cur_scroll_index += 1;
	  if (cur_scroll_index == nscroll_texts)
	    cur_scroll_index = 0;
693

Elliot Lee's avatar
Elliot Lee committed
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
	  cur_scroll_text = shuffle_array[cur_scroll_index];

	  offset = 0;
	}

      gdk_draw_rectangle (scroll_pixmap,
			  scroll_area->style->white_gc,
			  TRUE, 0, 0,
			  scroll_area->allocation.width,
			  scroll_area->allocation.height);
      gdk_draw_string (scroll_pixmap,
		       scroll_area->style->font,
		       scroll_area->style->black_gc,
		       scroll_area->allocation.width - offset,
		       scroll_area->style->font->ascent,
		       scroll_text[cur_scroll_text]);
      gdk_draw_pixmap (scroll_area->window,
		       scroll_area->style->black_gc,
		       scroll_pixmap, 0, 0, 0, 0,
		       scroll_area->allocation.width,
		       scroll_area->allocation.height);

      offset += 15;
      if (scroll_state == 0)
	{
719
720
	  if (offset > ((scroll_area->allocation.width +
			 scroll_text_widths[cur_scroll_text]) / 2))
Elliot Lee's avatar
Elliot Lee committed
721
722
	    {
	      scroll_state = 1;
723
724
	      offset = (scroll_area->allocation.width +
			scroll_text_widths[cur_scroll_text]) / 2;
Elliot Lee's avatar
Elliot Lee committed
725
726
727
728
729
730
	    }
	}
    }

  return return_val;
}