gimptransformtool.c 48.7 KB
Newer Older
Nate Summers's avatar
Nate Summers committed
1
/* The GIMP -- an image manipulation program
Nate Summers's avatar
Nate Summers committed
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
 * Copyright (C) 1995-2001 Spencer Kimball, Peter Mattis, and others
 *
 * 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.
 */

Nate Summers's avatar
Nate Summers committed
19
20
21
22
/* FIXME */
#define TRANSFORM_CORRECTIVE 1 


Nate Summers's avatar
Nate Summers committed
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
#include "config.h"

#include <stdlib.h>

#include <gtk/gtk.h>

#include "libgimpmath/gimpmath.h"
#include "libgimpwidgets/gimpwidgets.h"

#include "apptypes.h"

#include "cursorutil.h"
#include "drawable.h"
#include "floating_sel.h"
#include "gdisplay.h"
#include "gimage_mask.h"
#include "gimpchannel.h"
#include "gimpimage.h"
#include "gimplayer.h"
Nate Summers's avatar
Nate Summers committed
42
#include "gimpmarshal.h"
Nate Summers's avatar
Nate Summers committed
43
44
45
46
47
48
49
50
51
52
#include "gimprc.h"
#include "gimpui.h"
#include "info_dialog.h"
#include "path_transform.h"
#include "paint_funcs.h"
#include "pixel_region.h"
#include "undo.h"
#include "tile_manager.h"
#include "tile.h"

Nate Summers's avatar
Nate Summers committed
53
54
#include "tools/gimptool.h"
#include "tools/tool_manager.h"
Nate Summers's avatar
Nate Summers committed
55
56
57
58
59
60
61
62
63
64
#include "tools/gimpdrawtool.h"
#include "tools/gimptransformtool.h"
/*#include "transform_tool.h"*/

#include "libgimp/gimpintl.h"

enum
{
  TRANSFORM,
  LAST_SIGNAL
Nate Summers's avatar
Nate Summers committed
65
};
Nate Summers's avatar
Nate Summers committed
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90

/* This should be migrated to pixel_region or similar... */
/* PixelSurround describes a (read-only)
 *  region around a pixel in a tile manager
 */

typedef struct _PixelSurround
{
  Tile        *tile;
  TileManager *mgr;
  guchar      *buff;
  gint         buff_size;
  gint         bpp;
  gint         w;
  gint         h;
  guchar       bg[MAX_CHANNELS];
  gint         row_stride;
} PixelSurround;

#define BILINEAR(jk,j1k,jk1,j1k1,dx,dy) \
                ((1-dy) * (jk + dx * (j1k - jk)) + \
		    dy  * (jk1 + dx * (j1k1 - jk1)))

/* access interleaved pixels */
#define CUBIC_ROW(dx, row, step) \
Nate Summers's avatar
Nate Summers committed
91
  gimp_transform_tool_cubic(dx, (row)[0], (row)[step], (row)[step+step], (row)[step+step+step])
Nate Summers's avatar
Nate Summers committed
92
#define CUBIC_SCALED_ROW(dx, row, step, i) \
Nate Summers's avatar
Nate Summers committed
93
  gimp_transform_tool_cubic(dx, (row)[0] * (row)[i], \
Nate Summers's avatar
Nate Summers committed
94
95
96
97
98
99
100
101
102
            (row)[step] * (row)[step + i], \
            (row)[step+step]* (row)[step+step + i], \
            (row)[step+step+step] * (row)[step+step+step + i])

#define REF_TILE(i,x,y) \
     tile[i] = tile_manager_get_tile (float_tiles, x, y, TRUE, FALSE); \
     src[i] = tile_data_pointer (tile[i], (x) % TILE_WIDTH, (y) % TILE_HEIGHT);

/*  forward function declarations  */
Nate Summers's avatar
Nate Summers committed
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
static void      gimp_transform_tool_bounds    (GimpTransformTool      *tool,
                                                GDisplay               *gdisp);
static void      gimp_transform_tool_recalc    (GimpTransformTool      *tool,
					        GDisplay               *gdisp);
static void      gimp_transform_tool_doit      (GimpTransformTool      *tool,
					        GDisplay               *gdisp);
static gdouble   gimp_transform_tool_cubic     (gdouble                 dx,
					        gint                    jm1,
					        gint                    j,
					        gint                    jp1,
					        gint                    jp2);
static void    gimp_transform_tool_setup_grid  (GimpTransformTool      *tool);
static void    gimp_transform_tool_grid_recalc (GimpTransformTool      *gimp_transform_tool);
static void    gimp_transform_tool_init        (GimpTransformTool      *tool);
static void    gimp_transform_tool_class_init  (GimpTransformToolClass *tool);
Nate Summers's avatar
Nate Summers committed
118

Nate Summers's avatar
Nate Summers committed
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
void          gimp_transform_tool_button_press (GimpTool               *tool,
                                                GdkEventButton         *bevent,
			                        GDisplay               *gdisp);
			          
void        gimp_transform_tool_button_release (GimpTool               *tool,
			                        GdkEventButton         *bevent,
			                        GDisplay               *gdisp);
			                        
void           gimp_transform_tool_motion      (GimpTool               *tool,
		                                GdkEventMotion         *mevent,
		                                GDisplay               *gdisp);
		                                
void         gimp_transform_tool_cursor_update (GimpTool               *tool,
	                 		        GdkEventMotion         *mevent,
			                        GDisplay               *gdisp);
			                        
void           gimp_transform_tool_control     (GimpTool               *tool,
			                        ToolAction              action,
			                        GDisplay               *gdisp);
Nate Summers's avatar
Nate Summers committed
138
139

/*  variables  */
Nate Summers's avatar
Nate Summers committed
140
141
142
143
static TranInfo           old_trans_info;
InfoDialog               *transform_info        = NULL;
static gboolean           transform_info_inited = FALSE;
static GimpDrawToolClass *parent_class          = NULL;
Nate Summers's avatar
Nate Summers committed
144

Nate Summers's avatar
Nate Summers committed
145
static guint gimp_transform_tool_signals[LAST_SIGNAL] = { 0 };
Nate Summers's avatar
Nate Summers committed
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175

GtkType
gimp_transform_tool_get_type (void)
{
  static GtkType tool_type = 0;

  if (! tool_type)
    {
      GtkTypeInfo tool_info =
      {
        "GimpTransformTool",
        sizeof (GimpTransformTool),
        sizeof (GimpTransformToolClass),
        (GtkClassInitFunc) gimp_transform_tool_class_init,
        (GtkObjectInitFunc) gimp_transform_tool_init,
        /* reserved_1 */ NULL,
        /* reserved_2 */ NULL,
        NULL /* (GtkClassInitFunc) gimp_tool_class_init, */
      };

      tool_type = gtk_type_unique (GIMP_TYPE_DRAW_TOOL, &tool_info);
    }

  return tool_type;
}


static void
gimp_transform_tool_class_init (GimpTransformToolClass *klass)
{
Nate Summers's avatar
Nate Summers committed
176
177
178
  GtkObjectClass    *object_class;
  GimpToolClass     *tool_class;
  GimpDrawToolClass *draw_class;
Nate Summers's avatar
Nate Summers committed
179
180
181

  object_class = (GtkObjectClass *) klass;
  tool_class   = (GimpToolClass *) klass;
Nate Summers's avatar
Nate Summers committed
182
  draw_class   = (GimpDrawToolClass *) klass;
Nate Summers's avatar
Nate Summers committed
183
184
185
186
187
188
189
190
191

  parent_class = gtk_type_class (GIMP_TYPE_DRAW_TOOL);

  gimp_transform_tool_signals[TRANSFORM] =
    gtk_signal_new ("transform",
    		    GTK_RUN_FIRST,
    		    object_class->type,
    		    GTK_SIGNAL_OFFSET (GimpTransformToolClass,
    		    		       transform),
Nate Summers's avatar
Nate Summers committed
192
    		    gimp_marshal_POINTER__POINTER_INT,
Nate Summers's avatar
Nate Summers committed
193
194
195
196
197
198
199
    		    GTK_TYPE_POINTER, 2,
    		    GTK_TYPE_POINTER,
    		    GTK_TYPE_INT);

  gtk_object_class_add_signals (object_class, gimp_transform_tool_signals,
				LAST_SIGNAL);

Nate Summers's avatar
Nate Summers committed
200
  object_class->destroy      = gimp_transform_tool_destroy;
Nate Summers's avatar
Nate Summers committed
201
202
203
204
205
206

  tool_class->button_press   = gimp_transform_tool_button_press;
  tool_class->button_release = gimp_transform_tool_button_release;
  tool_class->motion         = gimp_transform_tool_motion;
  tool_class->cursor_update  = gimp_transform_tool_cursor_update;
  tool_class->control        = gimp_transform_tool_control;
Nate Summers's avatar
Nate Summers committed
207
208
209
210
211
212
213

  /* FIXME if (interactive) */
  draw_class->draw           = gimp_transform_tool_draw;
  /* else
    private->core = gimp_draw_tool_new (gimp_transform_tool_no_draw); */


Nate Summers's avatar
Nate Summers committed
214
215
216
}

static void
Nate Summers's avatar
Nate Summers committed
217
gimp_transform_tool_init (GimpTransformTool *tr_tool)
Nate Summers's avatar
Nate Summers committed
218
{
Nate Summers's avatar
Nate Summers committed
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
  GimpTool      *tool = GIMP_TOOL(tr_tool);
  gint           i;

  tr_tool->function = TRANSFORM_CREATING;
  tr_tool->original = NULL;

  tr_tool->bpressed = FALSE;

  for (i = 0; i < TRAN_INFO_SIZE; i++)
    tr_tool->trans_info[i] = 0;

  tr_tool->grid_coords = tr_tool->tgrid_coords = NULL;

  tool->scroll_lock = TRUE;   /*  Disallow scrolling  */
  tool->preserve    = FALSE;  /*  Don't preserve on drawable change  */
Nate Summers's avatar
Nate Summers committed
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
}

static void
pixel_surround_init (PixelSurround *ps,
		     TileManager   *tm,
		     gint           w,
		     gint           h,
		     guchar         bg[MAX_CHANNELS])
{
  gint i;

  for (i = 0; i < MAX_CHANNELS; ++i)
    {
      ps->bg[i] = bg[i];
    }

  ps->tile       = NULL;
  ps->mgr        = tm;
  ps->bpp        = tile_manager_bpp (tm);
  ps->w          = w;
  ps->h          = h;
  /* make sure buffer is big enough */
  ps->buff_size  = w * h * ps->bpp;
  ps->buff       = g_malloc (ps->buff_size);
  ps->row_stride = 0;
}

/* return a pointer to a buffer which contains all the surrounding pixels */
/* strategy: if we are in the middle of a tile, use the tile storage */
/* otherwise just copy into our own malloced buffer and return that */

static guchar *
pixel_surround_lock (PixelSurround *ps,
		     gint           x,
		     gint           y)
{
  gint    i, j;
  guchar *k;
  guchar *ptr;

  ps->tile = tile_manager_get_tile (ps->mgr, x, y, TRUE, FALSE);

  i = x % TILE_WIDTH;
  j = y % TILE_HEIGHT;

  /* do we have the whole region? */
  if (ps->tile &&
      (i < (tile_ewidth(ps->tile) - ps->w)) &&
      (j < (tile_eheight(ps->tile) - ps->h)))
    {
      ps->row_stride = tile_ewidth (ps->tile) * ps->bpp;
      /* is this really the correct way? */
      return tile_data_pointer (ps->tile, i, j);
    }

  /* nope, do this the hard way (for now) */
  if (ps->tile)
    {
      tile_release (ps->tile, FALSE);
      ps->tile = 0;
    }

  /* copy pixels, one by one */
  /* no, this is not the best way, but it's much better than before */
  ptr = ps->buff;
  for (j = y; j < y+ps->h; ++j)
    {
      for (i = x; i < x+ps->w; ++i)
	{
	  Tile *tile = tile_manager_get_tile (ps->mgr, i, j, TRUE, FALSE);

	  if (tile)
	    {
	      guchar *buff = tile_data_pointer (tile,
						i % TILE_WIDTH,
						j % TILE_HEIGHT);

	      for (k = buff; k < buff+ps->bpp; ++k, ++ptr)
		{
		  *ptr = *k;
		}
	      tile_release (tile, FALSE);
	    }
	  else
	    {
	      for (k = ps->bg; k < ps->bg+ps->bpp; ++k, ++ptr)
		{
		  *ptr = *k;
		}
	    }
	}
    }
  ps->row_stride = ps->w * ps->bpp;

  return ps->buff;
}

static gint
pixel_surround_rowstride (PixelSurround *ps)
{
  return ps->row_stride;
}

static void
pixel_surround_release (PixelSurround *ps)
{
  /* always get new tile (for now), so release the old one */
  if (ps->tile)
    {
      tile_release (ps->tile, FALSE);
      ps->tile = 0;
    }
}

static void
pixel_surround_clear (PixelSurround *ps)
{
  if (ps->buff)
    {
      g_free (ps->buff);
      ps->buff = 0;
      ps->buff_size = 0;
    }
}

static void
transform_ok_callback (GtkWidget *widget,
		       gpointer   data)
{
Nate Summers's avatar
Nate Summers committed
363
  GimpTool *tool;
Nate Summers's avatar
Nate Summers committed
364

Nate Summers's avatar
Nate Summers committed
365
366
  tool = GIMP_TOOL(data);
  gimp_transform_tool_doit (GIMP_TRANSFORM_TOOL(tool), tool->gdisp);
Nate Summers's avatar
Nate Summers committed
367
368
369
370
371
372
373
374
375
376
377
378
379
380
}

static void
transform_reset_callback (GtkWidget *widget,
			  gpointer   data)
{
  GimpTransformTool   *tool;
  GimpDrawTool        *dr_tool;
  gint                 i;

  tool    = GIMP_TRANSFORM_TOOL(data);
  dr_tool = GIMP_DRAW_TOOL(data);

  /*  stop the current tool drawing process  */
Nate Summers's avatar
Nate Summers committed
381
  gimp_draw_tool_pause (dr_tool);
Nate Summers's avatar
Nate Summers committed
382
383
384
385
386
387

  /*  Restore the previous transformation info  */
  for (i = 0; i < TRAN_INFO_SIZE; i++)
    tool->trans_info [i] = old_trans_info [i];

  /*  recalculate the tool's transformation matrix  */
Nate Summers's avatar
Nate Summers committed
388
  gimp_transform_tool_recalc (tool, GIMP_TOOL(tool)->gdisp);
Nate Summers's avatar
Nate Summers committed
389
390

  /*  resume drawing the current tool  */
Nate Summers's avatar
Nate Summers committed
391
  gimp_draw_tool_resume (dr_tool);
Nate Summers's avatar
Nate Summers committed
392
393
394
395
396
397
398
399
400
401
402
}

static const gchar *action_labels[] =
{
  N_("Rotate"),
  N_("Scale"),
  N_("Shear"),
  N_("Transform")
};

void
Nate Summers's avatar
Nate Summers committed
403
gimp_transform_tool_button_press (GimpTool           *tool,
Nate Summers's avatar
Nate Summers committed
404
405
406
                                  GdkEventButton     *bevent,
			          GDisplay           *gdisp)
{
Nate Summers's avatar
Nate Summers committed
407
408
409
410
411
412
413
  GimpTransformTool  *gt_tool;
  GimpDrawable       *drawable;
  gint                dist;
  gint                closest_dist;
  gint                x, y;
  gint                i;
  gint                off_x, off_y;
Nate Summers's avatar
Nate Summers committed
414

Nate Summers's avatar
Nate Summers committed
415
  gt_tool = GIMP_TRANSFORM_TOOL(tool);
Nate Summers's avatar
Nate Summers committed
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
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

  gt_tool->bpressed = TRUE; /* ALT */

  drawable = gimp_image_active_drawable (gdisp->gimage);

  if (gt_tool->function == TRANSFORM_CREATING && tool->state == ACTIVE)
    {
      /*  Save the current transformation info  */
      for (i = 0; i < TRAN_INFO_SIZE; i++)
	old_trans_info [i] = gt_tool->trans_info [i];
    }

  /*  if we have already displayed the bounding box and handles,
   *  check to make sure that the display which currently owns the
   *  tool is the one which just received the button pressed event
   */
  if ((gdisp == tool->gdisp) && gt_tool->interactive)
    {
      /*  start drawing the bounding box and handles...  */
      gimp_draw_tool_start (GIMP_DRAW_TOOL(gt_tool), gdisp->canvas->window);
	
      x = bevent->x;
      y = bevent->y;

      closest_dist = SQR (x - gt_tool->sx1) + SQR (y - gt_tool->sy1);
      gt_tool->function = TRANSFORM_HANDLE_1;

      dist = SQR (x - gt_tool->sx2) + SQR (y - gt_tool->sy2);
      if (dist < closest_dist)
	{
	  closest_dist = dist;
	  gt_tool->function = TRANSFORM_HANDLE_2;
	}

      dist = SQR (x - gt_tool->sx3) + SQR (y - gt_tool->sy3);
      if (dist < closest_dist)
	{
	  closest_dist = dist;
	  gt_tool->function = TRANSFORM_HANDLE_3;
	}

      dist = SQR (x - gt_tool->sx4) + SQR (y - gt_tool->sy4);
      if (dist < closest_dist)
	{
	  closest_dist = dist;
	  gt_tool->function = TRANSFORM_HANDLE_4;
	}

Nate Summers's avatar
Nate Summers committed
464
#ifdef FIXME_I_DO_NOT_BELONG_HERE
Nate Summers's avatar
Nate Summers committed
465
466
467
468
469
470
      if (tool->type == ROTATE
	  && (SQR (x - gt_tool->scx) +
	      SQR (y - gt_tool->scy)) <= 100)
	{
	  gt_tool->function = TRANSFORM_HANDLE_CENTER;
	}
Nate Summers's avatar
Nate Summers committed
471
#endif
Nate Summers's avatar
Nate Summers committed
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
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
534
535
536
537
538
539
540
541
542

      /*  Save the current pointer position  */
      gdisplay_untransform_coords (gdisp, bevent->x, bevent->y,
				   &gt_tool->startx,
				   &gt_tool->starty, TRUE, 0);
      gt_tool->lastx = gt_tool->startx;
      gt_tool->lasty = gt_tool->starty;

      gdk_pointer_grab (gdisp->canvas->window, FALSE,
			GDK_POINTER_MOTION_HINT_MASK |
			GDK_BUTTON1_MOTION_MASK |
			GDK_BUTTON_RELEASE_MASK,
			NULL, NULL, bevent->time);

      tool->state = ACTIVE;
      return;
    }


  /*  Initialisation stuff: if the cursor is clicked inside the current
   *  selection, show the bounding box and handles...
   */
  gdisplay_untransform_coords (gdisp, bevent->x, bevent->y, &x, &y,
			       FALSE, FALSE);

  gimp_drawable_offsets (drawable, &off_x, &off_y);
  if (x >= off_x && y >= off_y &&
      x < (off_x + gimp_drawable_width (drawable)) &&
      y < (off_y + gimp_drawable_height (drawable)))
    if (gimage_mask_is_empty (gdisp->gimage) ||
	gimage_mask_value (gdisp->gimage, x, y))
      {
	if (GIMP_IS_LAYER (drawable) &&
	    gimp_layer_get_mask (GIMP_LAYER (drawable)))
	  {
	    g_message (_("Transformations do not work on\n"
			 "layers that contain layer masks."));
	    tool->state = INACTIVE;
	    return;
	  }

	/*  If the tool is already active, clear the current state
	 *  and reset
	 */
	if (tool->state == ACTIVE)
	  gimp_transform_tool_reset (gt_tool, gdisp);

	/*  Set the pointer to the active display  */
	tool->gdisp    = gdisp;
	tool->drawable = drawable;
	tool->state    = ACTIVE;

	/*  Grab the pointer if we're in non-interactive mode  */
	if (!gt_tool->interactive)
	  gdk_pointer_grab (gdisp->canvas->window, FALSE,
			    (GDK_POINTER_MOTION_HINT_MASK |
			     GDK_BUTTON1_MOTION_MASK |
			     GDK_BUTTON_RELEASE_MASK),
			    NULL, NULL, bevent->time);

	/*  Find the transform bounds for some tools (like scale,
	 *  perspective) that actually need the bounds for
	 *  initializing
	 */
	gimp_transform_tool_bounds (gt_tool, gdisp);

	/*  Calculate the grid line endpoints  */
	if (gimp_transform_tool_show_grid ())
	  gimp_transform_tool_setup_grid (tool);

	/*  Initialize the transform tool */
Nate Summers's avatar
Nate Summers committed
543
	gimp_transform_tool_transform (gt_tool, gdisp, TRANSFORM_INIT);
Nate Summers's avatar
Nate Summers committed
544
545
546
547
548
549

	if (transform_info && !transform_info_inited)
	  {
	    gimp_dialog_create_action_area
	      (GTK_DIALOG (transform_info->shell),

Nate Summers's avatar
Nate Summers committed
550
	       /* FIXME!!! gettext (action_labels[tool->type - ROTATE])*/ "I need to be fixed badly.",
Nate Summers's avatar
Nate Summers committed
551
552
553
554
555
556
557
558
559
560
561
562
563
564
	       transform_ok_callback,
	       tool, NULL, NULL, TRUE, FALSE,
	       _("Reset"), transform_reset_callback,
	       tool, NULL, NULL, FALSE, FALSE,

	       NULL);

	    transform_info_inited = TRUE;
	  }

	/*  Recalculate the transform tool  */
	gimp_transform_tool_recalc (gt_tool, gdisp);

	/*  recall this function to find which handle we're dragging  */
Nate Summers's avatar
Nate Summers committed
565
	if (gt_tool->interactive)
Nate Summers's avatar
Nate Summers committed
566
567
568
569
570
	  gimp_transform_tool_button_press (gt_tool, bevent, gdisp);
      }
}

void
Nate Summers's avatar
Nate Summers committed
571
572
573
gimp_transform_tool_button_release (GimpTool         *tool,
			            GdkEventButton   *bevent,
			            GDisplay         *gdisp)
Nate Summers's avatar
Nate Summers committed
574
{
Nate Summers's avatar
Nate Summers committed
575
576
  GimpTransformTool *gt_tool;
  gint               i;
Nate Summers's avatar
Nate Summers committed
577

Nate Summers's avatar
Nate Summers committed
578
  gt_tool = GIMP_TRANSFORM_TOOL(tool);
Nate Summers's avatar
Nate Summers committed
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594

  gt_tool->bpressed = FALSE; /* ALT */

  /*  if we are creating, there is nothing to be done...exit  */
  if (gt_tool->function == TRANSFORM_CREATING &&
      gt_tool->interactive)
    return;

  /*  release of the pointer grab  */
  gdk_pointer_ungrab (bevent->time);
  gdk_flush ();

  /*  if the 3rd button isn't pressed, transform the selected mask  */
  if (! (bevent->state & GDK_BUTTON3_MASK))
    {
      /* Shift-clicking is another way to approve the transform  */
Nate Summers's avatar
Nate Summers committed
595
      if ((bevent->state & GDK_SHIFT_MASK) /* FIXME || (tool->type == FLIP) */)
Nate Summers's avatar
Nate Summers committed
596
	{
Nate Summers's avatar
Nate Summers committed
597
	  gimp_transform_tool_doit (gt_tool, gdisp);
Nate Summers's avatar
Nate Summers committed
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
	}
      else
	{
	  /*  Only update the paths preview */
	  path_transform_current_path (gdisp->gimage,
				       gt_tool->transform, TRUE);
	}
    }
  else
    {
      /*  stop the current tool drawing process  */
      gimp_draw_tool_pause (GIMP_DRAW_TOOL(gt_tool));

      /*  Restore the previous transformation info  */
      for (i = 0; i < TRAN_INFO_SIZE; i++)
	gt_tool->trans_info [i] = old_trans_info [i];

      /*  recalculate the tool's transformation matrix  */
      gimp_transform_tool_recalc (gt_tool, gdisp);

      /*  resume drawing the current tool  */
Nate Summers's avatar
Nate Summers committed
619
      gimp_draw_tool_resume (GIMP_DRAW_TOOL(gt_tool));
Nate Summers's avatar
Nate Summers committed
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643

      /* Update the paths preview */
      path_transform_current_path (gdisp->gimage,
				   gt_tool->transform, TRUE);
    }

  /*  if this tool is non-interactive, make it inactive after use  */
  if (!gt_tool->interactive)
    tool->state = INACTIVE;
}

void
gimp_transform_tool_doit (GimpTransformTool  *gt_tool,
		          GDisplay           *gdisp)
{
  GimpTool      *tool;
  TileManager   *new_tiles;
  TransformUndo *tu;
  PathUndo      *pundo;
  gboolean       new_layer;
  gint           i, x, y;

  gimp_add_busy_cursors ();

Nate Summers's avatar
Nate Summers committed
644
  tool = GIMP_TOOL(gt_tool);
Nate Summers's avatar
Nate Summers committed
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674

  /* undraw the tool before we muck around with the transform matrix */
  gimp_draw_tool_pause (GIMP_DRAW_TOOL(gt_tool));

  /*  We're going to dirty this image, but we want to keep the tool
   *  around
   */
  tool->preserve = TRUE;

  /*  Start a transform undo group  */
  undo_push_group_start (gdisp->gimage, TRANSFORM_CORE_UNDO);

  /*  With the old UI, if original is NULL, then this is the
      first transformation. In the new UI, it is always so, right?  */
  g_assert (gt_tool->original == NULL);

  /* If we're in interactive mode, we need to copy the current
   *  selection to the transform tool's private selection pointer, so
   *  that the original source can be repeatedly modified.
   */
  tool->drawable = gimp_image_active_drawable (gdisp->gimage);

  gt_tool->original = gimp_transform_tool_cut (gdisp->gimage,
					       tool->drawable,
					       &new_layer);

  pundo = path_transform_start_undo (gdisp->gimage);

  /*  Send the request for the transformation to the tool...
   */
Nate Summers's avatar
Nate Summers committed
675
  new_tiles = gimp_transform_tool_transform (gt_tool, gdisp,
Nate Summers's avatar
Nate Summers committed
676
677
					      TRANSFORM_FINISH);

Nate Summers's avatar
Nate Summers committed
678
  gimp_transform_tool_transform (gt_tool, gdisp, TRANSFORM_INIT);
Nate Summers's avatar
Nate Summers committed
679
680
681
682
683
684
685
686
687
688
689
690
691
692

  gimp_transform_tool_recalc (gt_tool, gdisp);

  if (new_tiles)
    {
      /*  paste the new transformed image to the gimage...also implement
       *  undo...
       */
      /*  FIXME: we should check if the drawable is still valid  */
      gimp_transform_tool_paste (gdisp->gimage, tool->drawable,
			    new_tiles, new_layer);

      /*  create and initialize the transform_undo structure  */
      tu = g_new (TransformUndo, 1);
Nate Summers's avatar
Nate Summers committed
693
694
      tu->tool = gt_tool;

Nate Summers's avatar
Nate Summers committed
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
      for (i = 0; i < TRAN_INFO_SIZE; i++)
	tu->trans_info[i] = old_trans_info[i];
      tu->original = NULL;
      tu->path_undo = pundo;

      /*  Make a note of the new current drawable (since we may have
       *  a floating selection, etc now.
       */
      tool->drawable = gimp_image_active_drawable (gdisp->gimage);

      undo_push_transform (gdisp->gimage, (void *) tu);
    }

  /*  push the undo group end  */
  undo_push_group_end (gdisp->gimage);

  /*  We're done dirtying the image, and would like to be restarted
   *  if the image gets dirty while the tool exists
   */
  tool->preserve = FALSE;

  /*  Flush the gdisplays  */
  if (gdisp->disp_xoffset || gdisp->disp_yoffset)
    {
      gdk_window_get_size (gdisp->canvas->window, &x, &y);
      if (gdisp->disp_yoffset)
	{
	  gdisplay_expose_area (gdisp, 0, 0, gdisp->disp_width,
				gdisp->disp_yoffset);
	  gdisplay_expose_area (gdisp, 0, gdisp->disp_yoffset + y,
				gdisp->disp_width, gdisp->disp_height);
	}
      if (gdisp->disp_xoffset)
	{
	  gdisplay_expose_area (gdisp, 0, 0, gdisp->disp_xoffset,
				gdisp->disp_height);
	  gdisplay_expose_area (gdisp, gdisp->disp_xoffset + x, 0,
				gdisp->disp_width, gdisp->disp_height);
	}
    }

  gimp_remove_busy_cursors (NULL);

  gdisplays_flush ();

  gimp_transform_tool_reset (tool, gdisp);

  /*  if this tool is non-interactive, make it inactive after use  */
Nate Summers's avatar
Nate Summers committed
743
  if (!gt_tool->interactive)
Nate Summers's avatar
Nate Summers committed
744
745
746
747
748
    tool->state = INACTIVE;
}


void
Nate Summers's avatar
Nate Summers committed
749
750
751
gimp_transform_tool_motion (GimpTool          *tool,
		            GdkEventMotion    *mevent,
		            GDisplay          *gdisp)
Nate Summers's avatar
Nate Summers committed
752
{
Nate Summers's avatar
Nate Summers committed
753
  GimpTransformTool *tr_tool;
Nate Summers's avatar
Nate Summers committed
754

Nate Summers's avatar
Nate Summers committed
755
  tr_tool = GIMP_TRANSFORM_TOOL(tool);
Nate Summers's avatar
Nate Summers committed
756

Nate Summers's avatar
Nate Summers committed
757
  if (tr_tool->bpressed == FALSE)
Nate Summers's avatar
Nate Summers committed
758
759
760
761
762
763
764
765
766
767
  {
    /*  hey we have not got the button press yet
     *  so go away.
     */
    return;
  }

  /*  if we are creating or this tool is non-interactive, there is
   *  nothing to be done so exit.
   */
Nate Summers's avatar
Nate Summers committed
768
769
  if (tr_tool->function == TRANSFORM_CREATING ||
      !tr_tool->interactive)
Nate Summers's avatar
Nate Summers committed
770
771
772
    return;

  /*  stop the current tool drawing process  */
Nate Summers's avatar
Nate Summers committed
773
  gimp_draw_tool_pause (GIMP_DRAW_TOOL(tool));
Nate Summers's avatar
Nate Summers committed
774
775

  gdisplay_untransform_coords (gdisp, mevent->x, mevent->y,
Nate Summers's avatar
Nate Summers committed
776
777
778
			       &tr_tool->curx,
			       &tr_tool->cury, TRUE, 0);
  tr_tool->state = mevent->state;
Nate Summers's avatar
Nate Summers committed
779
780

  /*  recalculate the tool's transformation matrix  */
Nate Summers's avatar
Nate Summers committed
781
  gimp_transform_tool_transform (tr_tool, gdisp, TRANSFORM_MOTION);
Nate Summers's avatar
Nate Summers committed
782

Nate Summers's avatar
Nate Summers committed
783
784
  tr_tool->lastx = tr_tool->curx;
  tr_tool->lasty = tr_tool->cury;
Nate Summers's avatar
Nate Summers committed
785
786

  /*  resume drawing the current tool  */
Nate Summers's avatar
Nate Summers committed
787
  gimp_draw_tool_resume (GIMP_DRAW_TOOL(tool));
Nate Summers's avatar
Nate Summers committed
788
789
790
}

void
Nate Summers's avatar
Nate Summers committed
791
gimp_transform_tool_cursor_update (GimpTool           *tool,
Nate Summers's avatar
Nate Summers committed
792
793
			           GdkEventMotion     *mevent,
			           GDisplay           *gdisp)
Nate Summers's avatar
Nate Summers committed
794
{
Nate Summers's avatar
Nate Summers committed
795
796
797
798
  GimpTransformTool  *tr_tool;
  GimpDrawable       *drawable;
  GdkCursorType       ctype = GDK_TOP_LEFT_ARROW;
  gint                x, y;
Nate Summers's avatar
Nate Summers committed
799

Nate Summers's avatar
Nate Summers committed
800
  tool = GIMP_TRANSFORM_TOOL(tool);
Nate Summers's avatar
Nate Summers committed
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831

  gdisplay_untransform_coords (gdisp, mevent->x, mevent->y, &x, &y,
			       FALSE, FALSE);

  if ((drawable = gimp_image_active_drawable (gdisp->gimage)))
    {
      if (GIMP_IS_LAYER (drawable) &&
	  gimp_layer_get_mask (GIMP_LAYER (drawable)))
	{
	  ctype = GIMP_BAD_CURSOR;
	}
      else if (x >= drawable->offset_x &&
	       y >= drawable->offset_y &&
	       x < (drawable->offset_x + drawable->width) &&
	       y < (drawable->offset_y + drawable->height))
	{
	  if (gimage_mask_is_empty (gdisp->gimage) ||
	      gimage_mask_value (gdisp->gimage, x, y))
	    {
	      ctype = GIMP_MOUSE_CURSOR;
	    }
	}
    }

  gdisplay_install_tool_cursor (gdisp,
				ctype,
				tool->tool_cursor,
				GIMP_CURSOR_MODIFIER_NONE);
}

void
Nate Summers's avatar
Nate Summers committed
832
833
834
gimp_transform_tool_control (GimpTool           *tool,
			     ToolAction          action,
			     GDisplay           *gdisp)
Nate Summers's avatar
Nate Summers committed
835
{
Nate Summers's avatar
Nate Summers committed
836
837
  GimpDrawTool       *dr_tool;
  GimpTransformTool  *tr_tool;
Nate Summers's avatar
Nate Summers committed
838

Nate Summers's avatar
Nate Summers committed
839
840
  dr_tool = GIMP_DRAW_TOOL(tool);
  tr_tool = GIMP_TRANSFORM_TOOL(tool);
Nate Summers's avatar
Nate Summers committed
841
842
843
844

  switch (action)
    {
    case PAUSE:
Nate Summers's avatar
Nate Summers committed
845
      gimp_draw_tool_pause (dr_tool);
Nate Summers's avatar
Nate Summers committed
846
847
848
      break;

    case RESUME:
Nate Summers's avatar
Nate Summers committed
849
      gimp_transform_tool_recalc (tr_tool, gdisp);
Nate Summers's avatar
Nate Summers committed
850
      gimp_draw_tool_resume (dr_tool);
Nate Summers's avatar
Nate Summers committed
851
852
853
      break;

    case HALT:
Nate Summers's avatar
Nate Summers committed
854
      gimp_transform_tool_reset (tr_tool, gdisp);
Nate Summers's avatar
Nate Summers committed
855
856
857
858
859
860
861
862
      break;

    default:
      break;
    }
}

void
Nate Summers's avatar
Nate Summers committed
863
gimp_transform_tool_no_draw (GimpDrawTool *tool)
Nate Summers's avatar
Nate Summers committed
864
865
866
867
868
{
  return;
}

void
Nate Summers's avatar
Nate Summers committed
869
gimp_transform_tool_draw (GimpDrawTool *dr_tool)
Nate Summers's avatar
Nate Summers committed
870
{
Nate Summers's avatar
Nate Summers committed
871
872
873
874
875
876
877
878
879
  GDisplay           *gdisp;
  GimpTransformTool  *tr_tool;
  GimpTool           *tool;
  gint                x1, y1, x2, y2, x3, y3, x4, y4;
  gint                srw, srh;
  gint                i, k, gci;
  gint                xa, ya, xb, yb;

  tr_tool        = GIMP_TRANSFORM_TOOL(dr_tool);
Nate Summers's avatar
Nate Summers committed
880
  tool           = GIMP_TOOL(tool);
Nate Summers's avatar
Nate Summers committed
881

Nate Summers's avatar
Nate Summers committed
882
  gdisp          = tool->gdisp;
Nate Summers's avatar
Nate Summers committed
883
884
885
886
887
888
889
890
891
892
893
894
895
896

  gdisplay_transform_coords (gdisp, tr_tool->tx1, tr_tool->ty1,
			     &tr_tool->sx1, &tr_tool->sy1, FALSE);
  gdisplay_transform_coords (gdisp, tr_tool->tx2, tr_tool->ty2,
			     &tr_tool->sx2, &tr_tool->sy2, FALSE);
  gdisplay_transform_coords (gdisp, tr_tool->tx3, tr_tool->ty3,
			     &tr_tool->sx3, &tr_tool->sy3, FALSE);
  gdisplay_transform_coords (gdisp, tr_tool->tx4, tr_tool->ty4,
			     &tr_tool->sx4, &tr_tool->sy4, FALSE);

  x1 = tr_tool->sx1;  y1 = tr_tool->sy1;
  x2 = tr_tool->sx2;  y2 = tr_tool->sy2;
  x3 = tr_tool->sx3;  y3 = tr_tool->sy3;
  x4 = tr_tool->sx4;  y4 = tr_tool->sy4;
Nate Summers's avatar
Nate Summers committed
897
898
899
900
901
902

  /*  find the handles' width and height  */
  srw = 10;
  srh = 10;

  /*  draw the bounding box  */
Nate Summers's avatar
Nate Summers committed
903
  gdk_draw_line (dr_tool->win, dr_tool->gc,
Nate Summers's avatar
Nate Summers committed
904
		 x1, y1, x2, y2);
Nate Summers's avatar
Nate Summers committed
905
  gdk_draw_line (dr_tool->win, dr_tool->gc,
Nate Summers's avatar
Nate Summers committed
906
		 x2, y2, x4, y4);
Nate Summers's avatar
Nate Summers committed
907
  gdk_draw_line (dr_tool->win, dr_tool->gc,
Nate Summers's avatar
Nate Summers committed
908
		 x3, y3, x4, y4);
Nate Summers's avatar
Nate Summers committed
909
  gdk_draw_line (dr_tool->win, dr_tool->gc,
Nate Summers's avatar
Nate Summers committed
910
911
912
913
		 x3, y3, x1, y1);

  /*  Draw the grid */

Nate Summers's avatar
Nate Summers committed
914
  if ((tr_tool->grid_coords != NULL) &&
Nate Summers's avatar
Nate Summers committed
915
916
      (tr_tool->tgrid_coords != NULL) /* FIXME!!! this doesn't belong here &&
      ((tool->type != PERSPECTIVE)  ||
Nate Summers's avatar
Nate Summers committed
917
       ((tr_tool->transform[0][0] >=0.0) &&
Nate Summers's avatar
Nate Summers committed
918
	(tr_tool->transform[1][1] >=0.0)) */ ) 
Nate Summers's avatar
Nate Summers committed
919
920
921
    {

      gci = 0;
Nate Summers's avatar
Nate Summers committed
922
      k = tr_tool->ngx + tr_tool->ngy;
Nate Summers's avatar
Nate Summers committed
923
924
      for (i = 0; i < k; i++)
	{
Nate Summers's avatar
Nate Summers committed
925
926
	  gdisplay_transform_coords (gdisp, tr_tool->tgrid_coords[gci],
				     tr_tool->tgrid_coords[gci+1],
Nate Summers's avatar
Nate Summers committed
927
				     &xa, &ya, FALSE);
Nate Summers's avatar
Nate Summers committed
928
929
	  gdisplay_transform_coords (gdisp, tr_tool->tgrid_coords[gci+2],
				     tr_tool->tgrid_coords[gci+3],
Nate Summers's avatar
Nate Summers committed
930
931
				     &xb, &yb, FALSE);

Nate Summers's avatar
Nate Summers committed
932
	  gdk_draw_line (dr_tool->win, dr_tool->gc,
Nate Summers's avatar
Nate Summers committed
933
934
935
936
937
938
			 xa, ya, xb, yb);
	  gci += 4;
	}
    }

  /*  draw the tool handles  */
Nate Summers's avatar
Nate Summers committed
939
  gdk_draw_rectangle (dr_tool->win, dr_tool->gc, 0,
Nate Summers's avatar
Nate Summers committed
940
		      x1 - (srw >> 1), y1 - (srh >> 1), srw, srh);
Nate Summers's avatar
Nate Summers committed
941
  gdk_draw_rectangle (dr_tool->win, dr_tool->gc, 0,
Nate Summers's avatar
Nate Summers committed
942
		      x2 - (srw >> 1), y2 - (srh >> 1), srw, srh);
Nate Summers's avatar
Nate Summers committed
943
  gdk_draw_rectangle (dr_tool->win, dr_tool->gc, 0,
Nate Summers's avatar
Nate Summers committed
944
		      x3 - (srw >> 1), y3 - (srh >> 1), srw, srh);
Nate Summers's avatar
Nate Summers committed
945
  gdk_draw_rectangle (dr_tool->win, dr_tool->gc, 0,
Nate Summers's avatar
Nate Summers committed
946
947
		      x4 - (srw >> 1), y4 - (srh >> 1), srw, srh);

Nate Summers's avatar
Nate Summers committed
948
#ifdef FIXME_I_DO_NOT_BELONG_HERE
Nate Summers's avatar
Nate Summers committed
949
950
951
952
953
954
955
956
957
958
959
  /*  draw the center  */
  if (tool->type == ROTATE)
    {
      gdisplay_transform_coords (gdisp, gimp_transform_tool->tcx, gimp_transform_tool->tcy,
				 &gimp_transform_tool->scx, &gimp_transform_tool->scy, FALSE);

      gdk_draw_arc (gimp_transform_tool->core->win, gimp_transform_tool->core->gc, 1,
		    gimp_transform_tool->scx - (srw >> 1),
		    gimp_transform_tool->scy - (srh >> 1),
		    srw, srh, 0, 23040);
    }
Nate Summers's avatar
Nate Summers committed
960
#endif
Nate Summers's avatar
Nate Summers committed
961
962
963
964
965
966
967

  if (transform_tool_showpath ())
    {
      GimpMatrix3 tmp_matrix;

      if (transform_tool_direction () == TRANSFORM_CORRECTIVE)
	{
Nate Summers's avatar
Nate Summers committed
968
	  gimp_matrix3_invert (tr_tool->transform, tmp_matrix);
Nate Summers's avatar
Nate Summers committed
969
970
971
	}
      else
	{
Nate Summers's avatar
Nate Summers committed
972
	  gimp_matrix3_duplicate (tr_tool->transform, tmp_matrix);
Nate Summers's avatar
Nate Summers committed
973
974
	}

Nate Summers's avatar
Nate Summers committed
975
      path_transform_draw_current (gdisp, dr_tool, tmp_matrix);
Nate Summers's avatar
Nate Summers committed
976
977
978
979
    }
}

void
Nate Summers's avatar
Nate Summers committed
980
gimp_transform_tool_destroy (GtkObject *object)
Nate Summers's avatar
Nate Summers committed
981
{
Nate Summers's avatar
Nate Summers committed
982
983
984
  GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (object);
  GimpDrawTool      *dr_tool = GIMP_DRAW_TOOL      (tr_tool);
  GimpTool          *tool    = GIMP_TOOL           (tr_tool);
Nate Summers's avatar
Nate Summers committed
985
986
987

  /*  Make sure the selection core is not visible  */
  if (tool->state == ACTIVE)
Nate Summers's avatar
Nate Summers committed
988
    gimp_draw_tool_stop (dr_tool);
Nate Summers's avatar
Nate Summers committed
989
990
991


  /*  Free up the original selection if it exists  */
Nate Summers's avatar
Nate Summers committed
992
993
  if (tr_tool->original)
    tile_manager_destroy (tr_tool->original);
Nate Summers's avatar
Nate Summers committed
994
995
996
997
998
999
1000

  /*  If there is an information dialog, free it up  */
  if (transform_info)
    info_dialog_free (transform_info);

  transform_info        = NULL;
  transform_info_inited = FALSE;
For faster browsing, not all history is shown. View entire blame