gimptransformtool.c 46.4 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
19
20
21
22
23
24
25
26
27
 * 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.
 */

#include "config.h"

#include <stdlib.h>

#include <gtk/gtk.h>

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

Michael Natterer's avatar
Michael Natterer committed
28
#include "tools-types.h"
Nate Summers's avatar
Nate Summers committed
29

Michael Natterer's avatar
Michael Natterer committed
30
31
32
33
34
35
#include "base/base-config.h"
#include "base/pixel-region.h"
#include "base/pixel-surround.h"
#include "base/tile-manager.h"
#include "base/tile.h"

36
37
#include "paint-funcs/paint-funcs.h"

38
39
40
41
42
43
44
#include "core/gimpchannel.h"
#include "core/gimpcontext.h"
#include "core/gimpdrawable.h"
#include "core/gimpimage.h"
#include "core/gimpimage-mask.h"
#include "core/gimplayer.h"
#include "core/gimpmarshal.h"
Michael Natterer's avatar
Michael Natterer committed
45
#include "core/gimptoolinfo.h"
46

47
48
49
50
#include "gui/info-dialog.h"
#include "gdisplay.h"
#include "gimpui.h"

51
#include "app_procs.h"
Nate Summers's avatar
Nate Summers committed
52
53
54
#include "drawable.h"
#include "floating_sel.h"
#include "undo.h"
Michael Natterer's avatar
Michael Natterer committed
55
#include "path_transform.h"
Nate Summers's avatar
Nate Summers committed
56

57
58
59
60
#include "tool_manager.h"
#include "tool_options.h"
#include "transform_options.h"
#include "gimptransformtool.h"
61
62
63
64
65

#include "tools/gimpperspectivetool.h"
#include "tools/gimprotatetool.h"
#include "tools/gimpscaletool.h"
#include "tools/gimpsheartool.h"
66
#include "tools/gimpfliptool.h"
Nate Summers's avatar
Nate Summers committed
67
68
69

#include "libgimp/gimpintl.h"

70

Nate Summers's avatar
Nate Summers committed
71
72
73
74
enum
{
  TRANSFORM,
  LAST_SIGNAL
Nate Summers's avatar
Nate Summers committed
75
};
Nate Summers's avatar
Nate Summers committed
76
77
78
79
80
81
82

#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
83
  gimp_transform_tool_cubic(dx, (row)[0], (row)[step], (row)[step+step], (row)[step+step+step])
Nate Summers's avatar
Nate Summers committed
84
#define CUBIC_SCALED_ROW(dx, row, step, i) \
Nate Summers's avatar
Nate Summers committed
85
  gimp_transform_tool_cubic(dx, (row)[0] * (row)[i], \
Nate Summers's avatar
Nate Summers committed
86
87
88
89
90
91
92
93
            (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);

94

Nate Summers's avatar
Nate Summers committed
95
/*  forward function declarations  */
Nate Summers's avatar
Nate Summers committed
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
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
111

112
113
114
static void    gimp_transform_tool_destroy     (GtkObject              *object);

static void   gimp_transform_tool_button_press (GimpTool               *tool,
Nate Summers's avatar
Nate Summers committed
115
116
117
                                                GdkEventButton         *bevent,
			                        GDisplay               *gdisp);
			          
118
static void gimp_transform_tool_button_release (GimpTool               *tool,
Nate Summers's avatar
Nate Summers committed
119
120
121
			                        GdkEventButton         *bevent,
			                        GDisplay               *gdisp);
			                        
122
static void    gimp_transform_tool_motion      (GimpTool               *tool,
Nate Summers's avatar
Nate Summers committed
123
124
125
		                                GdkEventMotion         *mevent,
		                                GDisplay               *gdisp);
		                                
126
static void  gimp_transform_tool_cursor_update (GimpTool               *tool,
Nate Summers's avatar
Nate Summers committed
127
128
129
	                 		        GdkEventMotion         *mevent,
			                        GDisplay               *gdisp);
			                        
130
static void    gimp_transform_tool_control     (GimpTool               *tool,
Nate Summers's avatar
Nate Summers committed
131
132
			                        ToolAction              action,
			                        GDisplay               *gdisp);
133
134
135
136

static void    gimp_transform_tool_draw        (GimpDrawTool           *draw_tool);


Nate Summers's avatar
Nate Summers committed
137
/*  variables  */
Nate Summers's avatar
Nate Summers committed
138
139
140
141
142
static TranInfo           old_trans_info;
InfoDialog               *transform_info        = NULL;
static gboolean           transform_info_inited = FALSE;
static GimpDrawToolClass *parent_class          = NULL;
static guint gimp_transform_tool_signals[LAST_SIGNAL] = { 0 };
Nate Summers's avatar
Nate Summers committed
143

144

Nate Summers's avatar
Nate Summers committed
145
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
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
173
174
175
  GtkObjectClass    *object_class;
  GimpToolClass     *tool_class;
  GimpDrawToolClass *draw_class;
Nate Summers's avatar
Nate Summers committed
176
177
178

  object_class = (GtkObjectClass *) klass;
  tool_class   = (GimpToolClass *) klass;
Nate Summers's avatar
Nate Summers committed
179
  draw_class   = (GimpDrawToolClass *) klass;
Nate Summers's avatar
Nate Summers committed
180
181
182
183
184

  parent_class = gtk_type_class (GIMP_TYPE_DRAW_TOOL);

  gimp_transform_tool_signals[TRANSFORM] =
    gtk_signal_new ("transform",
Nate Summers's avatar
Nate Summers committed
185
    		    GTK_RUN_LAST,
Nate Summers's avatar
Nate Summers committed
186
187
188
    		    object_class->type,
    		    GTK_SIGNAL_OFFSET (GimpTransformToolClass,
    		    		       transform),
Nate Summers's avatar
Nate Summers committed
189
    		    gimp_marshal_POINTER__POINTER_INT,
Nate Summers's avatar
Nate Summers committed
190
191
192
193
194
195
196
    		    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
197
  object_class->destroy      = gimp_transform_tool_destroy;
Nate Summers's avatar
Nate Summers committed
198
199
200
201
202
203

  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
204
205

  draw_class->draw           = gimp_transform_tool_draw;
Nate Summers's avatar
Nate Summers committed
206
207
208
}

static void
Nate Summers's avatar
Nate Summers committed
209
gimp_transform_tool_init (GimpTransformTool *tr_tool)
Nate Summers's avatar
Nate Summers committed
210
{
211
212
  GimpTool *tool = GIMP_TOOL (tr_tool);
  gint      i;
Nate Summers's avatar
Nate Summers committed
213
214
215
216
217
218
219
220
221
222
223

  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;

224
225
226
  /* FIXME */
  tr_tool->interactive = TRUE;

Nate Summers's avatar
Nate Summers committed
227
228
  tool->scroll_lock = TRUE;   /*  Disallow scrolling  */
  tool->preserve    = FALSE;  /*  Don't preserve on drawable change  */
229

Nate Summers's avatar
Nate Summers committed
230
231
}

Nate Summers's avatar
Nate Summers committed
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
TileManager *
gimp_transform_tool_transform (GimpTransformTool   *tool,
                               GDisplay            *gdisp,
			       TransformState       state)
{
  TileManager *retval;

  g_return_val_if_fail (tool, NULL);
  g_return_val_if_fail (GIMP_IS_TRANSFORM_TOOL (tool), NULL);

  gtk_signal_emit (GTK_OBJECT (tool), gimp_transform_tool_signals[TRANSFORM],
                   gdisp, state, &retval);

  return retval;
}

Nate Summers's avatar
Nate Summers committed
248
249
250
251
static void
transform_ok_callback (GtkWidget *widget,
		       gpointer   data)
{
Nate Summers's avatar
Nate Summers committed
252
  GimpTool *tool;
Nate Summers's avatar
Nate Summers committed
253

Nate Summers's avatar
Nate Summers committed
254
255
  tool = GIMP_TOOL(data);
  gimp_transform_tool_doit (GIMP_TRANSFORM_TOOL(tool), tool->gdisp);
Nate Summers's avatar
Nate Summers committed
256
257
258
259
260
261
262
263
264
265
}

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

266
267
  tool    = GIMP_TRANSFORM_TOOL (data);
  dr_tool = GIMP_DRAW_TOOL (data);
Nate Summers's avatar
Nate Summers committed
268
269

  /*  stop the current tool drawing process  */
Nate Summers's avatar
Nate Summers committed
270
  gimp_draw_tool_pause (dr_tool);
Nate Summers's avatar
Nate Summers committed
271
272
273
274
275
276

  /*  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
277
  gimp_transform_tool_recalc (tool, GIMP_TOOL(tool)->gdisp);
Nate Summers's avatar
Nate Summers committed
278
279

  /*  resume drawing the current tool  */
Nate Summers's avatar
Nate Summers committed
280
  gimp_draw_tool_resume (dr_tool);
Nate Summers's avatar
Nate Summers committed
281
282
}

283
284
static void
gimp_transform_tool_destroy (GtkObject *object)
Nate Summers's avatar
Nate Summers committed
285
{
286
287
  GimpTransformTool *tr_tool;
  GimpTool          *tool;
Nate Summers's avatar
Nate Summers committed
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
  tr_tool = GIMP_TRANSFORM_TOOL (object);
  tool    = GIMP_TOOL           (tr_tool);

  /*  Free up the original selection if it exists  */
  if (tr_tool->original)
    tile_manager_destroy (tr_tool->original);

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

  transform_info        = NULL;
  transform_info_inited = FALSE;

  /*  Free the grid line endpoint arrays if they exist */
  if (tr_tool->grid_coords != NULL)
    g_free (tr_tool->grid_coords);

  if (tr_tool->tgrid_coords != NULL)
    g_free (tr_tool->tgrid_coords);

  if (GTK_OBJECT_CLASS (parent_class)->destroy)
    GTK_OBJECT_CLASS (parent_class)->destroy (object);
}

static void
Nate Summers's avatar
Nate Summers committed
315
gimp_transform_tool_button_press (GimpTool           *tool,
Nate Summers's avatar
Nate Summers committed
316
317
318
                                  GdkEventButton     *bevent,
			          GDisplay           *gdisp)
{
Nate Summers's avatar
Nate Summers committed
319
320
321
322
323
324
325
  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
326

327
  gt_tool = GIMP_TRANSFORM_TOOL (tool);
Nate Summers's avatar
Nate Summers committed
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346

  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...  */
347
348
      gimp_draw_tool_start (GIMP_DRAW_TOOL (gt_tool), gdisp->canvas->window);

Nate Summers's avatar
Nate Summers committed
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
      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;
	}

376
377
      if ((SQR (x - gt_tool->scx) +
	   SQR (y - gt_tool->scy)) <= 100)
Nate Summers's avatar
Nate Summers committed
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
	{
	  gt_tool->function = TRANSFORM_HANDLE_CENTER;
	}

      /*  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)))
410
411
412
413
414
415
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
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
    {
      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 (gt_tool);

	  /*  Initialize the transform tool */
	  gimp_transform_tool_transform (gt_tool, gdisp, TRANSFORM_INIT);

	  if (transform_info && !transform_info_inited)
	    {
	      GtkType tool_type;

	      tool_type =
		gimp_context_get_tool (gimp_context_get_user ())->tool_type;

	      gimp_dialog_create_action_area
		(GTK_DIALOG (transform_info->shell),

		 /* FIXME: this does not belong here */
		 (tool_type == GIMP_TYPE_ROTATE_TOOL)      ? _("Rotate")    :
		 (tool_type == GIMP_TYPE_SCALE_TOOL)       ? _("Scale")     :
		 (tool_type == GIMP_TYPE_SHEAR_TOOL)       ? _("Shear")     :
		 (tool_type == GIMP_TYPE_PERSPECTIVE_TOOL) ? _("Transform") :
		 "EEK",
		 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  */
	  if (gt_tool->interactive)
	    gimp_transform_tool_button_press (tool, bevent, gdisp);
	}
    }
Nate Summers's avatar
Nate Summers committed
490
491
}

492
static void
Nate Summers's avatar
Nate Summers committed
493
494
495
gimp_transform_tool_button_release (GimpTool         *tool,
			            GdkEventButton   *bevent,
			            GDisplay         *gdisp)
Nate Summers's avatar
Nate Summers committed
496
{
Nate Summers's avatar
Nate Summers committed
497
498
  GimpTransformTool *gt_tool;
  gint               i;
Nate Summers's avatar
Nate Summers committed
499

500
  gt_tool = GIMP_TRANSFORM_TOOL (tool);
Nate Summers's avatar
Nate Summers committed
501
502
503
504

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

  /*  if we are creating, there is nothing to be done...exit  */
505
  if (gt_tool->function == TRANSFORM_CREATING && gt_tool->interactive)
Nate Summers's avatar
Nate Summers committed
506
507
508
509
510
511
512
513
514
515
    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  */
516
      if ((bevent->state & GDK_SHIFT_MASK) || GIMP_IS_FLIP_TOOL (tool))
Nate Summers's avatar
Nate Summers committed
517
	{
Nate Summers's avatar
Nate Summers committed
518
	  gimp_transform_tool_doit (gt_tool, gdisp);
Nate Summers's avatar
Nate Summers committed
519
520
521
522
523
524
525
526
527
528
529
	}
      else
	{
	  /*  Only update the paths preview */
	  path_transform_current_path (gdisp->gimage,
				       gt_tool->transform, TRUE);
	}
    }
  else
    {
      /*  stop the current tool drawing process  */
530
      gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
Nate Summers's avatar
Nate Summers committed
531
532
533
534
535
536
537
538
539

      /*  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  */
540
      gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
Nate Summers's avatar
Nate Summers committed
541
542
543
544
545
546
547
548
549
550
551

      /* 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;
}

552
static void
Nate Summers's avatar
Nate Summers committed
553
554
555
556
557
558
559
560
561
562
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;

563
  gimp_set_busy ();
Nate Summers's avatar
Nate Summers committed
564

565
  tool = GIMP_TOOL (gt_tool);
Nate Summers's avatar
Nate Summers committed
566
567

  /* undraw the tool before we muck around with the transform matrix */
568
  gimp_draw_tool_pause (GIMP_DRAW_TOOL (gt_tool));
Nate Summers's avatar
Nate Summers committed
569
570
571
572
573
574
575
576
577

  /*  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);

578
579
580
  /* With the old UI, if original is NULL, then this is the
   * first transformation. In the new UI, it is always so, right?
   */
Nate Summers's avatar
Nate Summers committed
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
  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
597
  new_tiles = gimp_transform_tool_transform (gt_tool, gdisp,
598
					     TRANSFORM_FINISH);
Nate Summers's avatar
Nate Summers committed
599

Nate Summers's avatar
Nate Summers committed
600
  gimp_transform_tool_transform (gt_tool, gdisp, TRANSFORM_INIT);
Nate Summers's avatar
Nate Summers committed
601
602
603
604
605
606
607
608
609
610

  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,
611
				 new_tiles, new_layer);
Nate Summers's avatar
Nate Summers committed
612
613

      /*  create and initialize the transform_undo structure  */
614
615
616
      tu = g_new0 (TransformUndo, 1);
      tu->tool_ID   = tool->ID;
      tu->tool_type = GTK_OBJECT (tool)->klass->type;
Nate Summers's avatar
Nate Summers committed
617

Nate Summers's avatar
Nate Summers committed
618
619
      for (i = 0; i < TRAN_INFO_SIZE; i++)
	tu->trans_info[i] = old_trans_info[i];
620
621

      tu->original  = NULL;
Nate Summers's avatar
Nate Summers committed
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
      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);
	}
    }

660
  gimp_unset_busy ();
Nate Summers's avatar
Nate Summers committed
661
662
663

  gdisplays_flush ();

664
  gimp_transform_tool_reset (gt_tool, gdisp);
Nate Summers's avatar
Nate Summers committed
665
666

  /*  if this tool is non-interactive, make it inactive after use  */
Nate Summers's avatar
Nate Summers committed
667
  if (!gt_tool->interactive)
Nate Summers's avatar
Nate Summers committed
668
669
670
    tool->state = INACTIVE;
}

671
static void
Nate Summers's avatar
Nate Summers committed
672
673
674
gimp_transform_tool_motion (GimpTool          *tool,
		            GdkEventMotion    *mevent,
		            GDisplay          *gdisp)
Nate Summers's avatar
Nate Summers committed
675
{
Nate Summers's avatar
Nate Summers committed
676
  GimpTransformTool *tr_tool;
Nate Summers's avatar
Nate Summers committed
677

678
  tr_tool = GIMP_TRANSFORM_TOOL (tool);
Nate Summers's avatar
Nate Summers committed
679

680
  if (! tr_tool->bpressed)
Nate Summers's avatar
Nate Summers committed
681
682
683
684
685
    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
686
687
  if (tr_tool->function == TRANSFORM_CREATING ||
      !tr_tool->interactive)
Nate Summers's avatar
Nate Summers committed
688
689
690
    return;

  /*  stop the current tool drawing process  */
691
  gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
Nate Summers's avatar
Nate Summers committed
692
693

  gdisplay_untransform_coords (gdisp, mevent->x, mevent->y,
Nate Summers's avatar
Nate Summers committed
694
695
696
			       &tr_tool->curx,
			       &tr_tool->cury, TRUE, 0);
  tr_tool->state = mevent->state;
Nate Summers's avatar
Nate Summers committed
697
698

  /*  recalculate the tool's transformation matrix  */
Nate Summers's avatar
Nate Summers committed
699
  gimp_transform_tool_transform (tr_tool, gdisp, TRANSFORM_MOTION);
Nate Summers's avatar
Nate Summers committed
700

Nate Summers's avatar
Nate Summers committed
701
702
  tr_tool->lastx = tr_tool->curx;
  tr_tool->lasty = tr_tool->cury;
Nate Summers's avatar
Nate Summers committed
703
704

  /*  resume drawing the current tool  */
705
  gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
Nate Summers's avatar
Nate Summers committed
706
707
}

708
static void
Nate Summers's avatar
Nate Summers committed
709
gimp_transform_tool_cursor_update (GimpTool           *tool,
Nate Summers's avatar
Nate Summers committed
710
711
			           GdkEventMotion     *mevent,
			           GDisplay           *gdisp)
Nate Summers's avatar
Nate Summers committed
712
{
Nate Summers's avatar
Nate Summers committed
713
714
715
716
  GimpTransformTool  *tr_tool;
  GimpDrawable       *drawable;
  GdkCursorType       ctype = GDK_TOP_LEFT_ARROW;
  gint                x, y;
Nate Summers's avatar
Nate Summers committed
717

718
  tr_tool = GIMP_TRANSFORM_TOOL (tool);
Nate Summers's avatar
Nate Summers committed
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748

  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);
}

749
750
751
752
static void
gimp_transform_tool_control (GimpTool   *tool,
			     ToolAction  action,
			     GDisplay   *gdisp)
Nate Summers's avatar
Nate Summers committed
753
{
754
755
  GimpDrawTool      *dr_tool;
  GimpTransformTool *tr_tool;
Nate Summers's avatar
Nate Summers committed
756

757
758
  dr_tool = GIMP_DRAW_TOOL (tool);
  tr_tool = GIMP_TRANSFORM_TOOL (tool);
Nate Summers's avatar
Nate Summers committed
759
760
761
762
763
764
765

  switch (action)
    {
    case PAUSE:
      break;

    case RESUME:
Nate Summers's avatar
Nate Summers committed
766
      gimp_transform_tool_recalc (tr_tool, gdisp);
Nate Summers's avatar
Nate Summers committed
767
768
769
      break;

    case HALT:
Nate Summers's avatar
Nate Summers committed
770
      gimp_transform_tool_reset (tr_tool, gdisp);
Nate Summers's avatar
Nate Summers committed
771
772
773
774
775
776
      break;

    default:
      break;
    }

777
778
  if (GIMP_TOOL_CLASS (parent_class)->control)
    GIMP_TOOL_CLASS (parent_class)->control (tool, action, gdisp);
Nate Summers's avatar
Nate Summers committed
779
780
}

781
static void
Nate Summers's avatar
Nate Summers committed
782
gimp_transform_tool_draw (GimpDrawTool *dr_tool)
Nate Summers's avatar
Nate Summers committed
783
{
Nate Summers's avatar
Nate Summers committed
784
785
786
787
788
789
790
791
  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;

792
793
  tr_tool = GIMP_TRANSFORM_TOOL (dr_tool);
  tool    = GIMP_TOOL (dr_tool);
Nate Summers's avatar
Nate Summers committed
794

795
  gdisp   = tool->gdisp;
Nate Summers's avatar
Nate Summers committed
796
797
798
799
800
801
802
803
804
805
806
807
808
809

  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
810
811
812
813
814
815

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

  /*  draw the bounding box  */
Nate Summers's avatar
Nate Summers committed
816
  gdk_draw_line (dr_tool->win, dr_tool->gc,
Nate Summers's avatar
Nate Summers committed
817
		 x1, y1, x2, y2);
Nate Summers's avatar
Nate Summers committed
818
  gdk_draw_line (dr_tool->win, dr_tool->gc,
Nate Summers's avatar
Nate Summers committed
819
		 x2, y2, x4, y4);
Nate Summers's avatar
Nate Summers committed
820
  gdk_draw_line (dr_tool->win, dr_tool->gc,
Nate Summers's avatar
Nate Summers committed
821
		 x3, y3, x4, y4);
Nate Summers's avatar
Nate Summers committed
822
  gdk_draw_line (dr_tool->win, dr_tool->gc,
Nate Summers's avatar
Nate Summers committed
823
824
825
826
		 x3, y3, x1, y1);

  /*  Draw the grid */

Nate Summers's avatar
Nate Summers committed
827
  if ((tr_tool->grid_coords != NULL) &&
Nate Summers's avatar
Nate Summers committed
828
829
      (tr_tool->tgrid_coords != NULL) /* FIXME!!! this doesn't belong here &&
      ((tool->type != PERSPECTIVE)  ||
Nate Summers's avatar
Nate Summers committed
830
       ((tr_tool->transform[0][0] >=0.0) &&
Nate Summers's avatar
Nate Summers committed
831
	(tr_tool->transform[1][1] >=0.0)) */ ) 
Nate Summers's avatar
Nate Summers committed
832
833
    {
      gci = 0;
Nate Summers's avatar
Nate Summers committed
834
      k = tr_tool->ngx + tr_tool->ngy;
835

Nate Summers's avatar
Nate Summers committed
836
837
      for (i = 0; i < k; i++)
	{
Nate Summers's avatar
Nate Summers committed
838
839
	  gdisplay_transform_coords (gdisp, tr_tool->tgrid_coords[gci],
				     tr_tool->tgrid_coords[gci+1],
Nate Summers's avatar
Nate Summers committed
840
				     &xa, &ya, FALSE);
Nate Summers's avatar
Nate Summers committed
841
842
	  gdisplay_transform_coords (gdisp, tr_tool->tgrid_coords[gci+2],
				     tr_tool->tgrid_coords[gci+3],
Nate Summers's avatar
Nate Summers committed
843
844
				     &xb, &yb, FALSE);

Nate Summers's avatar
Nate Summers committed
845
	  gdk_draw_line (dr_tool->win, dr_tool->gc,
Nate Summers's avatar
Nate Summers committed
846
847
848
849
850
851
			 xa, ya, xb, yb);
	  gci += 4;
	}
    }

  /*  draw the tool handles  */
Nate Summers's avatar
Nate Summers committed
852
  gdk_draw_rectangle (dr_tool->win, dr_tool->gc, 0,
Nate Summers's avatar
Nate Summers committed
853
		      x1 - (srw >> 1), y1 - (srh >> 1), srw, srh);
Nate Summers's avatar
Nate Summers committed
854
  gdk_draw_rectangle (dr_tool->win, dr_tool->gc, 0,
Nate Summers's avatar
Nate Summers committed
855
		      x2 - (srw >> 1), y2 - (srh >> 1), srw, srh);
Nate Summers's avatar
Nate Summers committed
856
  gdk_draw_rectangle (dr_tool->win, dr_tool->gc, 0,
Nate Summers's avatar
Nate Summers committed
857
		      x3 - (srw >> 1), y3 - (srh >> 1), srw, srh);
Nate Summers's avatar
Nate Summers committed
858
  gdk_draw_rectangle (dr_tool->win, dr_tool->gc, 0,
Nate Summers's avatar
Nate Summers committed
859
860
861
		      x4 - (srw >> 1), y4 - (srh >> 1), srw, srh);

  /*  draw the center  */
862
863
864
  gdisplay_transform_coords (gdisp,
			     tr_tool->tcx, tr_tool->tcy,
			     &tr_tool->scx, &tr_tool->scy, FALSE);
Nate Summers's avatar
Nate Summers committed
865

866
867
868
869
870
871
  gdk_draw_arc (dr_tool->win,
		dr_tool->gc,
		1,
		tr_tool->scx - (srw >> 1),
		tr_tool->scy - (srh >> 1),
		srw, srh, 0, 23040);
Nate Summers's avatar
Nate Summers committed
872

873
  if (gimp_transform_tool_showpath ())
Nate Summers's avatar
Nate Summers committed
874
875
876
    {
      GimpMatrix3 tmp_matrix;

877
      if (gimp_transform_tool_direction () == TRANSFORM_CORRECTIVE)
Nate Summers's avatar
Nate Summers committed
878
	{
Nate Summers's avatar
Nate Summers committed
879
	  gimp_matrix3_invert (tr_tool->transform, tmp_matrix);
Nate Summers's avatar
Nate Summers committed
880
881
882
	}
      else
	{
Nate Summers's avatar
Nate Summers committed
883
	  gimp_matrix3_duplicate (tr_tool->transform, tmp_matrix);
Nate Summers's avatar
Nate Summers committed
884
885
	}

Nate Summers's avatar
Nate Summers committed
886
      path_transform_draw_current (gdisp, dr_tool, tmp_matrix);
Nate Summers's avatar
Nate Summers committed
887
888
889
890
    }
}

void
Nate Summers's avatar
Nate Summers committed
891
gimp_transform_tool_transform_bounding_box (GimpTransformTool *tr_tool)
Nate Summers's avatar
Nate Summers committed
892
{
Nate Summers's avatar
Nate Summers committed
893
894
895
896
  GimpTool  *tool;
  gint       i, k;
  gint       gci;

897
  tool = GIMP_TOOL (tr_tool);
Nate Summers's avatar
Nate Summers committed
898
899
900
901
902
903
904
905
906
907
908
909
910

  gimp_matrix3_transform_point (tr_tool->transform,
				tr_tool->x1, tr_tool->y1,
				&tr_tool->tx1, &tr_tool->ty1);
  gimp_matrix3_transform_point (tr_tool->transform,
				tr_tool->x2, tr_tool->y1,
				&tr_tool->tx2, &tr_tool->ty2);
  gimp_matrix3_transform_point (tr_tool->transform,
				tr_tool->x1, tr_tool->y2,
				&tr_tool->tx3, &tr_tool->ty3);
  gimp_matrix3_transform_point (tr_tool->transform,
				tr_tool->x2, tr_tool->y2,
				&tr_tool->tx4, &tr_tool->ty4);
Nate Summers's avatar
Nate Summers committed
911

912
913
914
  gimp_matrix3_transform_point (tr_tool->transform,
				tr_tool->cx, tr_tool->cy,
				&tr_tool->tcx, &tr_tool->tcy);
Nate Summers's avatar
Nate Summers committed
915

Nate Summers's avatar
Nate Summers committed
916
917
  if (tr_tool->grid_coords != NULL &&
      tr_tool->tgrid_coords != NULL)
Nate Summers's avatar
Nate Summers committed
918
919
    {
      gci = 0;
Nate Summers's avatar
Nate Summers committed
920
      k  = (tr_tool->ngx + tr_tool->ngy) * 2;
921

Nate Summers's avatar
Nate Summers committed
922
923
      for (i = 0; i < k; i++)
	{
Nate Summers's avatar
Nate Summers committed
924
925
926
927
928
	  gimp_matrix3_transform_point (tr_tool->transform,
					tr_tool->grid_coords[gci],
					tr_tool->grid_coords[gci+1],
					&(tr_tool->tgrid_coords[gci]),
					&(tr_tool->tgrid_coords[gci+1]));
Nate Summers's avatar
Nate Summers committed
929
930
931
932
933
934
	  gci += 2;
	}
    }
}

void
935
936
gimp_transform_tool_reset (GimpTransformTool *tr_tool,
		           GDisplay          *gdisp)
Nate Summers's avatar
Nate Summers committed
937
{
Nate Summers's avatar
Nate Summers committed
938
  GimpTool *tool;
Nate Summers's avatar
Nate Summers committed
939

940
  tool = GIMP_TOOL (tr_tool);
Nate Summers's avatar
Nate Summers committed
941

Nate Summers's avatar
Nate Summers committed
942
  if (tr_tool->original)
943
944
945
946
    {
      tile_manager_destroy (tr_tool->original);
      tr_tool->original = NULL;
    }
Nate Summers's avatar
Nate Summers committed
947
948

  /*  inactivate the tool  */
Nate Summers's avatar
Nate Summers committed
949
  tr_tool->function = TRANSFORM_CREATING;
950
  gimp_draw_tool_stop (GIMP_DRAW_TOOL (tr_tool));
Nate Summers's avatar
Nate Summers committed
951
952
953
954
955
956
957
958
  info_dialog_popdown (transform_info);

  tool->state    = INACTIVE;
  tool->gdisp    = NULL;
  tool->drawable = NULL;
}

static void
959
960
gimp_transform_tool_bounds (GimpTransformTool *tr_tool,
		            GDisplay          *gdisp)
Nate Summers's avatar
Nate Summers committed
961
962
963
964
965
{
  TileManager   *tiles;
  GimpDrawable  *drawable;
  gint           offset_x, offset_y;

966
967
  tiles    = tr_tool->original;
  drawable = gimp_image_active_drawable (gdisp->gimage);
Nate Summers's avatar
Nate Summers committed
968
969
970
971
972

  /*  find the boundaries  */
  if (tiles)
    {
      tile_manager_get_offsets (tiles,
Nate Summers's avatar
Nate Summers committed
973
974
975
976
				&tr_tool->x1, &tr_tool->y1);
				
      tr_tool->x2 = tr_tool->x1 + tile_manager_width (tiles);
      tr_tool->y2 = tr_tool->y1 + tile_manager_height (tiles);
Nate Summers's avatar
Nate Summers committed
977
978
979
980
981
    }
  else
    {
      gimp_drawable_offsets (drawable, &offset_x, &offset_y);
      gimp_drawable_mask_bounds (drawable,
Nate Summers's avatar
Nate Summers committed
982
983
984
985
986
987
				 &tr_tool->x1, &tr_tool->y1,
				 &tr_tool->x2, &tr_tool->y2);
      tr_tool->x1 += offset_x;
      tr_tool->y1 += offset_y;
      tr_tool->x2 += offset_x;
      tr_tool->y2 += offset_y;
Nate Summers's avatar
Nate Summers committed
988
    }
Nate Summers's avatar
Nate Summers committed
989
990
991

  tr_tool->cx = (tr_tool->x1 + tr_tool->x2) / 2;
  tr_tool->cy = (tr_tool->y1 + tr_tool->y2) / 2;
Nate Summers's avatar
Nate Summers committed
992
993

  /*  changing the bounds invalidates any grid we may have  */
Nate Summers's avatar
Nate Summers committed
994
  gimp_transform_tool_grid_recalc (tr_tool);
Nate Summers's avatar
Nate Summers committed
995
996
997
998
999
}

void
gimp_transform_tool_grid_density_changed (void)
{
Nate Summers's avatar
Nate Summers committed
1000
  GimpTransformTool *tr_tool;
For faster browsing, not all history is shown. View entire blame