gimptransformtool.c 55.6 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
 * 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>
24
#include <gdk/gdkkeysyms.h>
Nate Summers's avatar
Nate Summers committed
25
26

#include "libgimpmath/gimpmath.h"
27
#include "libgimpconfig/gimpconfig.h"
Nate Summers's avatar
Nate Summers committed
28
29
#include "libgimpwidgets/gimpwidgets.h"

Michael Natterer's avatar
Michael Natterer committed
30
#include "tools-types.h"
31

Michael Natterer's avatar
Michael Natterer committed
32
#include "base/tile-manager.h"
33

Michael Natterer's avatar
Michael Natterer committed
34
#include "core/gimp.h"
35
#include "core/gimpchannel.h"
36
#include "core/gimpcontext.h"
Michael Natterer's avatar
Michael Natterer committed
37
#include "core/gimpdrawable-transform.h"
38
#include "core/gimpimage.h"
39
#include "core/gimpimage-undo.h"
40
#include "core/gimpimage-undo-push.h"
41
#include "core/gimpitem-linked.h"
42
#include "core/gimplayer.h"
43
#include "core/gimplayermask.h"
44
#include "core/gimppickable.h"
45
#include "core/gimpprogress.h"
Michael Natterer's avatar
Michael Natterer committed
46
#include "core/gimptoolinfo.h"
47

48
49
50
#include "vectors/gimpvectors.h"
#include "vectors/gimpstroke.h"

51
#include "widgets/gimpdialogfactory.h"
Michael Natterer's avatar
Michael Natterer committed
52
53
#include "widgets/gimpviewabledialog.h"

54
#include "display/gimpdisplay.h"
55
56
57
#include "display/gimpdisplayshell.h"
#include "display/gimpdisplayshell-appearance.h"
#include "display/gimpdisplayshell-transform.h"
Nate Summers's avatar
Nate Summers committed
58

59
#ifdef __GNUC__
60
#warning FIXME #include "dialogs/dialogs-types.h"
61
#endif
62
63
#include "dialogs/dialogs-types.h"
#include "dialogs/info-dialog.h"
64

65
#include "gimptoolcontrol.h"
66
#include "gimptransformoptions.h"
67
68
#include "gimptransformtool.h"
#include "gimptransformtool-undo.h"
69

70
#include "gimp-intl.h"
Nate Summers's avatar
Nate Summers committed
71

72

73
#define HANDLE_SIZE 10
Michael Natterer's avatar
Michael Natterer committed
74

75

Michael Natterer's avatar
Michael Natterer committed
76
77
78
79
80
/*  local function prototypes  */

static void   gimp_transform_tool_init        (GimpTransformTool      *tool);
static void   gimp_transform_tool_class_init  (GimpTransformToolClass *tool);

81
82
83
static GObject * gimp_transform_tool_constructor   (GType              type,
                                                    guint              n_params,
                                                    GObjectConstructParam *params);
84
static void     gimp_transform_tool_finalize       (GObject           *object);
Michael Natterer's avatar
Michael Natterer committed
85

86
static gboolean gimp_transform_tool_initialize     (GimpTool          *tool,
87
                                                    GimpDisplay       *gdisp);
88
static void     gimp_transform_tool_control        (GimpTool          *tool,
89
                                                    GimpToolAction     action,
Michael Natterer's avatar
Michael Natterer committed
90
                                                    GimpDisplay       *gdisp);
91
static void     gimp_transform_tool_button_press   (GimpTool          *tool,
Michael Natterer's avatar
Michael Natterer committed
92
93
94
95
                                                    GimpCoords        *coords,
                                                    guint32            time,
                                                    GdkModifierType    state,
                                                    GimpDisplay       *gdisp);
96
static void     gimp_transform_tool_button_release (GimpTool          *tool,
Michael Natterer's avatar
Michael Natterer committed
97
98
99
100
                                                    GimpCoords        *coords,
                                                    guint32            time,
                                                    GdkModifierType    state,
                                                    GimpDisplay       *gdisp);
101
static void     gimp_transform_tool_motion         (GimpTool          *tool,
Michael Natterer's avatar
Michael Natterer committed
102
103
104
105
                                                    GimpCoords        *coords,
                                                    guint32            time,
                                                    GdkModifierType    state,
                                                    GimpDisplay       *gdisp);
106
static gboolean gimp_transform_tool_key_press      (GimpTool          *tool,
107
108
                                                    GdkEventKey       *kevent,
                                                    GimpDisplay       *gdisp);
109
static void     gimp_transform_tool_modifier_key   (GimpTool          *tool,
110
111
112
113
                                                    GdkModifierType    key,
                                                    gboolean           press,
                                                    GdkModifierType    state,
                                                    GimpDisplay       *gdisp);
114
static void     gimp_transform_tool_oper_update    (GimpTool          *tool,
115
116
117
                                                    GimpCoords        *coords,
                                                    GdkModifierType    state,
                                                    GimpDisplay       *gdisp);
118
static void     gimp_transform_tool_cursor_update  (GimpTool          *tool,
Michael Natterer's avatar
Michael Natterer committed
119
120
121
122
                                                    GimpCoords        *coords,
                                                    GdkModifierType    state,
                                                    GimpDisplay       *gdisp);

123
static void     gimp_transform_tool_draw           (GimpDrawTool      *draw_tool);
Michael Natterer's avatar
Michael Natterer committed
124

125
static TileManager *
126
                gimp_transform_tool_real_transform (GimpTransformTool *tr_tool,
127
                                                    GimpItem          *item,
128
                                                    gboolean           mask_empty,
129
130
                                                    GimpDisplay       *gdisp);

131
132
static void     gimp_transform_tool_halt           (GimpTransformTool *tr_tool);
static void     gimp_transform_tool_bounds         (GimpTransformTool *tr_tool,
Michael Natterer's avatar
Michael Natterer committed
133
                                                    GimpDisplay       *gdisp);
134
135
static void     gimp_transform_tool_dialog         (GimpTransformTool *tr_tool);
static void     gimp_transform_tool_prepare        (GimpTransformTool *tr_tool,
Michael Natterer's avatar
Michael Natterer committed
136
                                                    GimpDisplay       *gdisp);
137
static void     gimp_transform_tool_doit           (GimpTransformTool *tr_tool,
Michael Natterer's avatar
Michael Natterer committed
138
                                                    GimpDisplay       *gdisp);
Michael Natterer's avatar
Michael Natterer committed
139
static void     gimp_transform_tool_transform_bounding_box (GimpTransformTool *tr_tool);
140
static void     gimp_transform_tool_grid_recalc    (GimpTransformTool *tr_tool);
Michael Natterer's avatar
Michael Natterer committed
141

142
143
static void     gimp_transform_tool_force_expose_preview (GimpTransformTool *tr_tool);

144
static void     gimp_transform_tool_response       (GtkWidget         *widget,
145
                                                    gint               response_id,
Michael Natterer's avatar
Michael Natterer committed
146
                                                    GimpTransformTool *tr_tool);
147

148
149
150
151
152
153
static void     gimp_transform_tool_notify_type    (GimpTransformOptions *options,
                                                    GParamSpec           *pspec,
                                                    GimpTransformTool    *tr_tool);
static void     gimp_transform_tool_notify_preview (GimpTransformOptions *options,
                                                    GParamSpec           *pspec,
                                                    GimpTransformTool    *tr_tool);
154

155
static GimpDrawToolClass *parent_class = NULL;
156

157
158

GType
Nate Summers's avatar
Nate Summers committed
159
160
gimp_transform_tool_get_type (void)
{
161
  static GType tool_type = 0;
Nate Summers's avatar
Nate Summers committed
162
163
164

  if (! tool_type)
    {
165
      static const GTypeInfo tool_info =
Nate Summers's avatar
Nate Summers committed
166
167
      {
        sizeof (GimpTransformToolClass),
168
169
170
171
172
173
174
175
        (GBaseInitFunc) NULL,
        (GBaseFinalizeFunc) NULL,
        (GClassInitFunc) gimp_transform_tool_class_init,
        NULL,           /* class_finalize */
        NULL,           /* class_data     */
        sizeof (GimpTransformTool),
        0,              /* n_preallocs    */
        (GInstanceInitFunc) gimp_transform_tool_init,
Nate Summers's avatar
Nate Summers committed
176
177
      };

178
      tool_type = g_type_register_static (GIMP_TYPE_DRAW_TOOL,
179
                                          "GimpTransformTool",
180
                                          &tool_info, 0);
Nate Summers's avatar
Nate Summers committed
181
182
183
184
185
186
187
188
    }

  return tool_type;
}

static void
gimp_transform_tool_class_init (GimpTransformToolClass *klass)
{
189
190
191
  GObjectClass      *object_class = G_OBJECT_CLASS (klass);
  GimpToolClass     *tool_class   = GIMP_TOOL_CLASS (klass);
  GimpDrawToolClass *draw_class   = GIMP_DRAW_TOOL_CLASS (klass);
Nate Summers's avatar
Nate Summers committed
192

193
  parent_class = g_type_class_peek_parent (klass);
Nate Summers's avatar
Nate Summers committed
194

195
  object_class->constructor  = gimp_transform_tool_constructor;
196
  object_class->finalize     = gimp_transform_tool_finalize;
Nate Summers's avatar
Nate Summers committed
197

198
  tool_class->initialize     = gimp_transform_tool_initialize;
199
  tool_class->control        = gimp_transform_tool_control;
Nate Summers's avatar
Nate Summers committed
200
201
202
  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;
203
  tool_class->key_press      = gimp_transform_tool_key_press;
204
  tool_class->modifier_key   = gimp_transform_tool_modifier_key;
205
  tool_class->oper_update    = gimp_transform_tool_oper_update;
Nate Summers's avatar
Nate Summers committed
206
  tool_class->cursor_update  = gimp_transform_tool_cursor_update;
Nate Summers's avatar
Nate Summers committed
207
208

  draw_class->draw           = gimp_transform_tool_draw;
Michael Natterer's avatar
Michael Natterer committed
209
210

  klass->dialog              = NULL;
Michael Natterer's avatar
Michael Natterer committed
211
  klass->dialog_update       = NULL;
Michael Natterer's avatar
Michael Natterer committed
212
213
214
  klass->prepare             = NULL;
  klass->motion              = NULL;
  klass->recalc              = NULL;
215
  klass->transform           = gimp_transform_tool_real_transform;
Nate Summers's avatar
Nate Summers committed
216
217
218
}

static void
Michael Natterer's avatar
Michael Natterer committed
219
gimp_transform_tool_init (GimpTransformTool *tr_tool)
Nate Summers's avatar
Nate Summers committed
220
{
Michael Natterer's avatar
Michael Natterer committed
221
  GimpTool *tool;
222
  gint      i;
Nate Summers's avatar
Nate Summers committed
223

Michael Natterer's avatar
Michael Natterer committed
224
  tool = GIMP_TOOL (tr_tool);
Michael Natterer's avatar
Michael Natterer committed
225

Michael Natterer's avatar
Michael Natterer committed
226
227
  gimp_tool_control_set_scroll_lock (tool->control, TRUE);
  gimp_tool_control_set_preserve    (tool->control, FALSE);
228
229
230
231
  gimp_tool_control_set_dirty_mask  (tool->control,
                                     GIMP_DIRTY_IMAGE_SIZE |
                                     GIMP_DIRTY_DRAWABLE   |
                                     GIMP_DIRTY_SELECTION);
Michael Natterer's avatar
Michael Natterer committed
232

Michael Natterer's avatar
Michael Natterer committed
233
234
  tr_tool->function = TRANSFORM_CREATING;
  tr_tool->original = NULL;
Nate Summers's avatar
Nate Summers committed
235
236

  for (i = 0; i < TRAN_INFO_SIZE; i++)
237
    {
Michael Natterer's avatar
Michael Natterer committed
238
239
      tr_tool->trans_info[i]     = 0.0;
      tr_tool->old_trans_info[i] = 0.0;
240
    }
Nate Summers's avatar
Nate Summers committed
241

242
  gimp_matrix3_identity (&tr_tool->transform);
243

244
245
246
247
248
249
250
  tr_tool->use_grid         = TRUE;
  tr_tool->use_center       = TRUE;
  tr_tool->ngx              = 0;
  tr_tool->ngy              = 0;
  tr_tool->grid_coords      = NULL;
  tr_tool->tgrid_coords     = NULL;

251
  tr_tool->type             = GIMP_TRANSFORM_TYPE_LAYER;
252
  tr_tool->direction        = GIMP_TRANSFORM_FORWARD;
253

254
  tr_tool->shell_desc       = NULL;
255
  tr_tool->progress_text    = _("Transforming");
256
  tr_tool->info_dialog      = NULL;
Nate Summers's avatar
Nate Summers committed
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
static GObject *
gimp_transform_tool_constructor (GType                  type,
                                 guint                  n_params,
                                 GObjectConstructParam *params)
{
  GObject           *object;
  GimpTool          *tool;
  GimpTransformTool *tr_tool;

  object = G_OBJECT_CLASS (parent_class)->constructor (type, n_params, params);

  tool    = GIMP_TOOL (object);
  tr_tool = GIMP_TRANSFORM_TOOL (object);

  g_assert (GIMP_IS_TOOL_INFO (tool->tool_info));

  if (tr_tool->use_grid)
    {
      tr_tool->type =
        GIMP_TRANSFORM_OPTIONS (tool->tool_info->tool_options)->type;
      tr_tool->direction =
        GIMP_TRANSFORM_OPTIONS (tool->tool_info->tool_options)->direction;

      g_signal_connect_object (tool->tool_info->tool_options,
                               "notify::type",
                               G_CALLBACK (gimp_transform_tool_notify_type),
                               tr_tool, 0);
286
287
288
289
      g_signal_connect_object (tool->tool_info->tool_options,
                               "notify::type",
                               G_CALLBACK (gimp_transform_tool_notify_preview),
                               tr_tool, 0);
290
291
292
293
      g_signal_connect_object (tool->tool_info->tool_options,
                               "notify::direction",
                               G_CALLBACK (gimp_transform_tool_notify_type),
                               tr_tool, 0);
294
295
296
297
      g_signal_connect_object (tool->tool_info->tool_options,
                               "notify::direction",
                               G_CALLBACK (gimp_transform_tool_notify_preview),
                               tr_tool, 0);
298
      g_signal_connect_object (tool->tool_info->tool_options,
299
300
                               "notify::preview-type",
                               G_CALLBACK (gimp_transform_tool_notify_preview),
301
302
                               tr_tool, 0);
      g_signal_connect_object (tool->tool_info->tool_options,
303
304
                               "notify::grid-type",
                               G_CALLBACK (gimp_transform_tool_notify_preview),
305
                               tr_tool, 0);
306
      g_signal_connect_object (tool->tool_info->tool_options,
307
                               "notify::grid-size",
308
309
                               G_CALLBACK (gimp_transform_tool_notify_preview),
                               tr_tool, 0);
310
311
312
313
314
    }

  return object;
}

315
static void
316
gimp_transform_tool_finalize (GObject *object)
Nate Summers's avatar
Nate Summers committed
317
{
318
  GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (object);
319
320

  if (tr_tool->original)
321
    {
322
      tile_manager_unref (tr_tool->original);
323
324
      tr_tool->original = NULL;
    }
325

326
  if (tr_tool->info_dialog)
327
    {
328
329
      info_dialog_free (tr_tool->info_dialog);
      tr_tool->info_dialog = NULL;
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
    }

  if (tr_tool->grid_coords)
    {
      g_free (tr_tool->grid_coords);
      tr_tool->grid_coords = NULL;
    }

  if (tr_tool->tgrid_coords)
    {
      g_free (tr_tool->tgrid_coords);
      tr_tool->tgrid_coords = NULL;
    }

  G_OBJECT_CLASS (parent_class)->finalize (object);
}

347
static gboolean
348
gimp_transform_tool_initialize (GimpTool    *tool,
349
                                GimpDisplay *gdisp)
350
351
352
353
354
{
  GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (tool);

  if (gdisp != tool->gdisp)
    {
355
      gint i;
356
357
358

      /*  Set the pointer to the active display  */
      tool->gdisp    = gdisp;
359
      tool->drawable = gimp_image_active_drawable (gdisp->gimage);
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382

      /*  Initialize the transform tool dialog */
      if (! tr_tool->info_dialog)
        gimp_transform_tool_dialog (tr_tool);

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

      gimp_transform_tool_prepare (tr_tool, gdisp);

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

      /*  start drawing the bounding box and handles...  */
      gimp_draw_tool_start (GIMP_DRAW_TOOL (tool), gdisp);

      tr_tool->function = TRANSFORM_CREATING;

      /*  Save the current transformation info  */
      for (i = 0; i < TRAN_INFO_SIZE; i++)
383
        tr_tool->old_trans_info[i] = tr_tool->trans_info[i];
384
    }
385
386

  return TRUE;
387
388
}

389
static void
390
gimp_transform_tool_control (GimpTool       *tool,
391
392
                             GimpToolAction  action,
                             GimpDisplay    *gdisp)
393
{
394
  GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (tool);
395

396
397
398
399
  switch (action)
    {
    case PAUSE:
      break;
400

401
    case RESUME:
Michael Natterer's avatar
Michael Natterer committed
402
      gimp_transform_tool_bounds (tr_tool, gdisp);
Michael Natterer's avatar
Michael Natterer committed
403
      gimp_transform_tool_recalc (tr_tool, gdisp);
404
      break;
405

406
    case HALT:
407
      gimp_transform_tool_halt (tr_tool);
408
      return; /* don't upchain */
409
      break;
410

411
412
413
414
    default:
      break;
    }

Michael Natterer's avatar
Michael Natterer committed
415
  GIMP_TOOL_CLASS (parent_class)->control (tool, action, gdisp);
416
417
418
}

static void
419
420
421
422
gimp_transform_tool_button_press (GimpTool        *tool,
                                  GimpCoords      *coords,
                                  guint32          time,
                                  GdkModifierType  state,
423
                                  GimpDisplay     *gdisp)
Nate Summers's avatar
Nate Summers committed
424
{
425
  GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (tool);
Nate Summers's avatar
Nate Summers committed
426

427
428
  if (tr_tool->function == TRANSFORM_CREATING && tr_tool->use_grid)
    gimp_transform_tool_oper_update (tool, coords, state, gdisp);
429

430
431
  tr_tool->lastx = tr_tool->startx = coords->x;
  tr_tool->lasty = tr_tool->starty = coords->y;
Nate Summers's avatar
Nate Summers committed
432

433
  gimp_tool_control_activate (tool->control);
Nate Summers's avatar
Nate Summers committed
434
435
}

436
static void
437
438
439
gimp_transform_tool_button_release (GimpTool        *tool,
                                    GimpCoords      *coords,
                                    guint32          time,
440
441
                                    GdkModifierType  state,
                                    GimpDisplay     *gdisp)
Nate Summers's avatar
Nate Summers committed
442
{
443
  GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (tool);
Nate Summers's avatar
Nate Summers committed
444
  gint               i;
Nate Summers's avatar
Nate Summers committed
445
446

  /*  if we are creating, there is nothing to be done...exit  */
447
  if (tr_tool->function == TRANSFORM_CREATING && tr_tool->use_grid)
Nate Summers's avatar
Nate Summers committed
448
449
450
    return;

  /*  if the 3rd button isn't pressed, transform the selected mask  */
451
  if (! (state & GDK_BUTTON3_MASK))
Nate Summers's avatar
Nate Summers committed
452
453
    {
      /* Shift-clicking is another way to approve the transform  */
454
      if ((state & GDK_SHIFT_MASK) || ! tr_tool->use_grid)
455
456
457
        {
          gimp_transform_tool_doit (tr_tool, gdisp);
        }
Nate Summers's avatar
Nate Summers committed
458
459
460
    }
  else
    {
461
      gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
Nate Summers's avatar
Nate Summers committed
462

Michael Natterer's avatar
Michael Natterer committed
463
464
465
      /* get rid of preview artifacts left outside the drawable's area */
      gimp_transform_tool_expose_preview (tr_tool);

Nate Summers's avatar
Nate Summers committed
466
467
      /*  Restore the previous transformation info  */
      for (i = 0; i < TRAN_INFO_SIZE; i++)
468
        tr_tool->trans_info[i] = tr_tool->old_trans_info[i];
Nate Summers's avatar
Nate Summers committed
469

Michael Natterer's avatar
Michael Natterer committed
470
471
472
      /*  reget the selection bounds  */
      gimp_transform_tool_bounds (tr_tool, gdisp);

Nate Summers's avatar
Nate Summers committed
473
      /*  recalculate the tool's transformation matrix  */
Michael Natterer's avatar
Michael Natterer committed
474
      gimp_transform_tool_recalc (tr_tool, gdisp);
Nate Summers's avatar
Nate Summers committed
475

476
      gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
Nate Summers's avatar
Nate Summers committed
477
    }
478
479

  gimp_tool_control_halt (tool->control);
Nate Summers's avatar
Nate Summers committed
480
481
}

482
static void
483
484
485
gimp_transform_tool_motion (GimpTool        *tool,
                            GimpCoords      *coords,
                            guint32          time,
486
487
                            GdkModifierType  state,
                            GimpDisplay     *gdisp)
Nate Summers's avatar
Nate Summers committed
488
{
489
  GimpTransformTool      *tr_tool = GIMP_TRANSFORM_TOOL (tool);
Michael Natterer's avatar
Michael Natterer committed
490
  GimpTransformToolClass *tr_tool_class;
Nate Summers's avatar
Nate Summers committed
491

492
  /*  if we are creating, there is nothing to be done so exit.  */
493
  if (tr_tool->function == TRANSFORM_CREATING || ! tr_tool->use_grid)
Nate Summers's avatar
Nate Summers committed
494
495
    return;

496
  gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
Nate Summers's avatar
Nate Summers committed
497

Michael Natterer's avatar
Michael Natterer committed
498
499
500
  tr_tool->curx  = coords->x;
  tr_tool->cury  = coords->y;
  tr_tool->state = state;
Nate Summers's avatar
Nate Summers committed
501
502

  /*  recalculate the tool's transformation matrix  */
Michael Natterer's avatar
Michael Natterer committed
503
504
505
506
507
  tr_tool_class = GIMP_TRANSFORM_TOOL_GET_CLASS (tr_tool);

  if (tr_tool_class->motion)
    {
      tr_tool_class->motion (tr_tool, gdisp);
Nate Summers's avatar
Nate Summers committed
508

509
510
      gimp_transform_tool_expose_preview (tr_tool);

Michael Natterer's avatar
Michael Natterer committed
511
      gimp_transform_tool_recalc (tr_tool, gdisp);
Michael Natterer's avatar
Michael Natterer committed
512
513
514
515
    }

  tr_tool->lastx = tr_tool->curx;
  tr_tool->lasty = tr_tool->cury;
Nate Summers's avatar
Nate Summers committed
516

517
  gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
Nate Summers's avatar
Nate Summers committed
518
519
}

520
521
#define RESPONSE_RESET 1

522
static gboolean
523
524
525
526
527
gimp_transform_tool_key_press (GimpTool    *tool,
                               GdkEventKey *kevent,
                               GimpDisplay *gdisp)
{
  GimpTransformTool *trans_tool = GIMP_TRANSFORM_TOOL (tool);
528
  GimpDrawTool      *draw_tool  = GIMP_DRAW_TOOL (tool);
529
530
531
532
533

  if (gdisp == draw_tool->gdisp)
    {
      switch (kevent->keyval)
        {
534
535
536
        case GDK_KP_Enter:
        case GDK_Return:
          gimp_transform_tool_response (NULL, GTK_RESPONSE_OK, trans_tool);
537
          return TRUE;
538
539
540
541

        case GDK_Delete:
        case GDK_BackSpace:
          gimp_transform_tool_response (NULL, RESPONSE_RESET, trans_tool);
542
          return TRUE;
543
544
545
546

        case GDK_Escape:
          gimp_transform_tool_response (NULL, GTK_RESPONSE_CANCEL, trans_tool);
          return TRUE;
547
548
        }
    }
549
550

  return FALSE;
551
552
}

553
554
555
556
557
558
559
static void
gimp_transform_tool_modifier_key (GimpTool        *tool,
                                  GdkModifierType  key,
                                  gboolean         press,
                                  GdkModifierType  state,
                                  GimpDisplay     *gdisp)
{
560
  GimpTransformOptions *options;
561

562
  options = GIMP_TRANSFORM_OPTIONS (tool->tool_info->tool_options);
563

564
  if (key == GDK_CONTROL_MASK)
565
    {
566
      g_object_set (options,
567
568
                    "constrain-1", ! options->constrain_1,
                    NULL);
569
    }
570
  else if (key == GDK_MOD1_MASK)
571
    {
572
      g_object_set (options,
573
574
                    "constrain-2", ! options->constrain_2,
                    NULL);
575
576
577
    }
}

578
579
580
581
582
583
static void
gimp_transform_tool_oper_update (GimpTool        *tool,
                                 GimpCoords      *coords,
                                 GdkModifierType  state,
                                 GimpDisplay     *gdisp)
{
584
585
  GimpTransformTool *tr_tool   = GIMP_TRANSFORM_TOOL (tool);
  GimpDrawTool      *draw_tool = GIMP_DRAW_TOOL (tool);
586

587
588
589
  if (! tr_tool->use_grid)
    return;

590
591
592
593
594
595
596
597
598
599
600
601
602
603
  if (gdisp == tool->gdisp)
    {
      gdouble closest_dist;
      gdouble dist;

      closest_dist = gimp_draw_tool_calc_distance (draw_tool, gdisp,
                                                   coords->x, coords->y,
                                                   tr_tool->tx1, tr_tool->ty1);
      tr_tool->function = TRANSFORM_HANDLE_1;

      dist = gimp_draw_tool_calc_distance (draw_tool, gdisp,
                                           coords->x, coords->y,
                                           tr_tool->tx2, tr_tool->ty2);
      if (dist < closest_dist)
604
605
606
607
        {
          closest_dist = dist;
          tr_tool->function = TRANSFORM_HANDLE_2;
        }
608
609
610
611
612

      dist = gimp_draw_tool_calc_distance (draw_tool, gdisp,
                                           coords->x, coords->y,
                                           tr_tool->tx3, tr_tool->ty3);
      if (dist < closest_dist)
613
614
615
616
        {
          closest_dist = dist;
          tr_tool->function = TRANSFORM_HANDLE_3;
        }
617
618
619
620
621

      dist = gimp_draw_tool_calc_distance (draw_tool, gdisp,
                                           coords->x, coords->y,
                                           tr_tool->tx4, tr_tool->ty4);
      if (dist < closest_dist)
622
623
624
625
        {
          closest_dist = dist;
          tr_tool->function = TRANSFORM_HANDLE_4;
        }
626
627
628
629
630

      if (gimp_draw_tool_on_handle (draw_tool, gdisp,
                                    coords->x, coords->y,
                                    GIMP_HANDLE_CIRCLE,
                                    tr_tool->tcx, tr_tool->tcy,
631
                                    HANDLE_SIZE, HANDLE_SIZE,
632
633
                                    GTK_ANCHOR_CENTER,
                                    FALSE))
634
635
636
        {
          tr_tool->function = TRANSFORM_HANDLE_CENTER;
        }
637
638
639
    }
}

640
static void
641
642
gimp_transform_tool_cursor_update (GimpTool        *tool,
                                   GimpCoords      *coords,
643
644
                                   GdkModifierType  state,
                                   GimpDisplay     *gdisp)
Nate Summers's avatar
Nate Summers committed
645
{
646
  GimpTransformTool    *tr_tool = GIMP_TRANSFORM_TOOL (tool);
647
  GimpTransformOptions *options;
648

649
  options = GIMP_TRANSFORM_OPTIONS (tool->tool_info->tool_options);
Nate Summers's avatar
Nate Summers committed
650

Michael Natterer's avatar
Michael Natterer committed
651
  if (tr_tool->use_grid)
Nate Summers's avatar
Nate Summers committed
652
    {
653
      GimpChannel        *selection = gimp_image_get_mask (gdisp->gimage);
654
655
      GimpCursorType      cursor    = GDK_TOP_LEFT_ARROW;
      GimpCursorModifier  modifier  = GIMP_CURSOR_MODIFIER_NONE;
656

657
      switch (options->type)
Michael Natterer's avatar
Michael Natterer committed
658
        {
659
        case GIMP_TRANSFORM_TYPE_LAYER:
660
661
662
          if (gimp_image_coords_in_active_drawable (gdisp->gimage, coords))
            {
              if (gimp_channel_is_empty (selection) ||
663
664
                  gimp_pickable_get_opacity_at (GIMP_PICKABLE (selection),
                                                coords->x, coords->y))
665
666
667
668
                {
                  cursor = GIMP_CURSOR_MOUSE;
                }
            }
669
670
671
          break;

        case GIMP_TRANSFORM_TYPE_SELECTION:
672
          if (gimp_channel_is_empty (selection) ||
673
674
              gimp_pickable_get_opacity_at (GIMP_PICKABLE (selection),
                                            coords->x, coords->y))
Michael Natterer's avatar
Michael Natterer committed
675
            {
676
              cursor = GIMP_CURSOR_MOUSE;
Michael Natterer's avatar
Michael Natterer committed
677
            }
678
679
680
681
          break;

        case GIMP_TRANSFORM_TYPE_PATH:
          if (gimp_image_get_active_vectors (gdisp->gimage))
682
            cursor = GIMP_CURSOR_MOUSE;
683
          else
684
            cursor = GIMP_CURSOR_BAD;
685
          break;
Michael Natterer's avatar
Michael Natterer committed
686
        }
687

Michael Natterer's avatar
Michael Natterer committed
688
689
      if (tr_tool->use_center && tr_tool->function == TRANSFORM_HANDLE_CENTER)
        {
690
          modifier = GIMP_CURSOR_MODIFIER_MOVE;
Michael Natterer's avatar
Michael Natterer committed
691
692
        }

693
694
      gimp_tool_control_set_cursor          (tool->control, cursor);
      gimp_tool_control_set_cursor_modifier (tool->control, modifier);
Michael Natterer's avatar
Michael Natterer committed
695
    }
696
697

  GIMP_TOOL_CLASS (parent_class)->cursor_update (tool, coords, state, gdisp);
Nate Summers's avatar
Nate Summers committed
698
699
}

700
static void
701
gimp_transform_tool_draw (GimpDrawTool *draw_tool)
Nate Summers's avatar
Nate Summers committed
702
{
703
704
  GimpTool             *tool    = GIMP_TOOL (draw_tool);
  GimpTransformTool    *tr_tool = GIMP_TRANSFORM_TOOL (draw_tool);
705
  GimpTransformOptions *options;
706
  gdouble               z1, z2, z3, z4;
Nate Summers's avatar
Nate Summers committed
707

708
709
710
  if (! tr_tool->use_grid)
    return;

711
  options = GIMP_TRANSFORM_OPTIONS (tool->tool_info->tool_options);
712

Nate Summers's avatar
Nate Summers committed
713
  /*  draw the bounding box  */
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
  gimp_draw_tool_draw_line (draw_tool,
                            tr_tool->tx1, tr_tool->ty1,
                            tr_tool->tx2, tr_tool->ty2,
                            FALSE);
  gimp_draw_tool_draw_line (draw_tool,
                            tr_tool->tx2, tr_tool->ty2,
                            tr_tool->tx4, tr_tool->ty4,
                            FALSE);
  gimp_draw_tool_draw_line (draw_tool,
                            tr_tool->tx3, tr_tool->ty3,
                            tr_tool->tx4, tr_tool->ty4,
                            FALSE);
  gimp_draw_tool_draw_line (draw_tool,
                            tr_tool->tx3, tr_tool->ty3,
                            tr_tool->tx1, tr_tool->ty1,
                            FALSE);
Nate Summers's avatar
Nate Summers committed
730

731
732
  /* We test if the transformed polygon is convex.
   * if z1 and z2 have the same sign as well as z3 and z4
733
734
   * the polygon is convex.
   */
735
736
737
738
739
740
741
742
  z1 = ((tr_tool->tx2 - tr_tool->tx1) * (tr_tool->ty4 - tr_tool->ty1) -
        (tr_tool->tx4 - tr_tool->tx1) * (tr_tool->ty2 - tr_tool->ty1));
  z2 = ((tr_tool->tx4 - tr_tool->tx1) * (tr_tool->ty3 - tr_tool->ty1) -
        (tr_tool->tx3 - tr_tool->tx1) * (tr_tool->ty4 - tr_tool->ty1));
  z3 = ((tr_tool->tx4 - tr_tool->tx2) * (tr_tool->ty3 - tr_tool->ty2) -
        (tr_tool->tx3 - tr_tool->tx2) * (tr_tool->ty4 - tr_tool->ty2));
  z4 = ((tr_tool->tx3 - tr_tool->tx2) * (tr_tool->ty1 - tr_tool->ty2) -
        (tr_tool->tx1 - tr_tool->tx2) * (tr_tool->ty3 - tr_tool->ty2));
743

744
  /*  Draw the grid (not for path transform since it looks ugly)  */
Nate Summers's avatar
Nate Summers committed
745

746
747
748
  if (tr_tool->type != GIMP_TRANSFORM_TYPE_PATH &&
      tr_tool->grid_coords                      &&
      tr_tool->tgrid_coords                     &&
749
750
      z1 * z2 > 0                               &&
      z3 * z4 > 0)
Nate Summers's avatar
Nate Summers committed
751
    {
752
753
      gint gci, i, k;

Nate Summers's avatar
Nate Summers committed
754
      k = tr_tool->ngx + tr_tool->ngy;
755

756
      for (i = 0, gci = 0; i < k; i++, gci += 4)
757
        {
758
759
760
761
762
763
          gimp_draw_tool_draw_line (draw_tool,
                                    tr_tool->tgrid_coords[gci],
                                    tr_tool->tgrid_coords[gci + 1],
                                    tr_tool->tgrid_coords[gci + 2],
                                    tr_tool->tgrid_coords[gci + 3],
                                    FALSE);
764
        }
Nate Summers's avatar
Nate Summers committed
765
766
767
    }

  /*  draw the tool handles  */
768
769
770
  gimp_draw_tool_draw_handle (draw_tool,
                              GIMP_HANDLE_SQUARE,
                              tr_tool->tx1, tr_tool->ty1,
771
                              HANDLE_SIZE, HANDLE_SIZE,
772
773
774
775
776
                              GTK_ANCHOR_CENTER,
                              FALSE);
  gimp_draw_tool_draw_handle (draw_tool,
                              GIMP_HANDLE_SQUARE,
                              tr_tool->tx2, tr_tool->ty2,
777
                              HANDLE_SIZE, HANDLE_SIZE,
778
779
780
781
782
                              GTK_ANCHOR_CENTER,
                              FALSE);
  gimp_draw_tool_draw_handle (draw_tool,
                              GIMP_HANDLE_SQUARE,
                              tr_tool->tx3, tr_tool->ty3,
783
                              HANDLE_SIZE, HANDLE_SIZE,
784
785
786
787
788
                              GTK_ANCHOR_CENTER,
                              FALSE);
  gimp_draw_tool_draw_handle (draw_tool,
                              GIMP_HANDLE_SQUARE,
                              tr_tool->tx4, tr_tool->ty4,
789
                              HANDLE_SIZE, HANDLE_SIZE,
790
791
                              GTK_ANCHOR_CENTER,
                              FALSE);
Nate Summers's avatar
Nate Summers committed
792
793

  /*  draw the center  */
794
795
796
797
798
  if (tr_tool->use_center)
    {
      gimp_draw_tool_draw_handle (draw_tool,
                                  GIMP_HANDLE_FILLED_CIRCLE,
                                  tr_tool->tcx, tr_tool->tcy,
799
                                  HANDLE_SIZE, HANDLE_SIZE,
800
801
802
                                  GTK_ANCHOR_CENTER,
                                  FALSE);
    }
Nate Summers's avatar
Nate Summers committed
803

804
  if (tr_tool->type == GIMP_TRANSFORM_TYPE_PATH)
Nate Summers's avatar
Nate Summers committed
805
    {
806
807
808
      GimpVectors *vectors;
      GimpStroke  *stroke = NULL;
      GimpMatrix3  matrix = tr_tool->transform;
809

810
811
812
      vectors = gimp_image_get_active_vectors (tool->gdisp->gimage);

      if (vectors)
813
        {
814
815
816
817
818
819
820
821
822
823
          if (tr_tool->direction == GIMP_TRANSFORM_BACKWARD)
            gimp_matrix3_invert (&matrix);

          while ((stroke = gimp_vectors_stroke_get_next (vectors, stroke)))
            {
              GArray   *coords;
              gboolean  closed;

              coords = gimp_stroke_interpolate (stroke, 1.0, &closed);

824
              if (coords && coords->len)
825
                {
826
827
                  gint i;

828
829
830
831
832
833
834
835
836
                  for (i = 0; i < coords->len; i++)
                    {
                      GimpCoords *curr = &g_array_index (coords, GimpCoords, i);

                      gimp_matrix3_transform_point (&matrix,
                                                    curr->x, curr->y,
                                                    &curr->x, &curr->y);
                    }

837
838
839
840
                  gimp_draw_tool_draw_strokes (draw_tool,
                                               &g_array_index (coords,
                                                               GimpCoords, 0),
                                               coords->len, FALSE, FALSE);
841
                }
842
843
844

              if (coords)
                g_array_free (coords, TRUE);
845
            }
846
        }
Nate Summers's avatar
Nate Summers committed
847
848
849
    }
}

850
851
static TileManager *
gimp_transform_tool_real_transform (GimpTransformTool *tr_tool,
852
                                    GimpItem          *active_item,
853
                                    gboolean           mask_empty,
854
855
                                    GimpDisplay       *gdisp)
{
856
  GimpTool             *tool = GIMP_TOOL (tr_tool);
857
  GimpTransformOptions *options;
858
  GimpContext          *context;
859
  GimpProgress         *progress;
860
  TileManager          *ret  = NULL;
861

862
  options = GIMP_TRANSFORM_OPTIONS (tool->tool_info->tool_options);
863
  context = GIMP_CONTEXT (options);
864
865
866
867

  if (tr_tool->info_dialog)
    gtk_widget_set_sensitive (GTK_WIDGET (tr_tool->info_dialog->shell), FALSE);

868
869
  progress = gimp_progress_start (GIMP_PROGRESS (gdisp),
                                  tr_tool->progress_text, FALSE);
870

871
  if (gimp_item_get_linked (active_item))
872
    gimp_item_linked_transform (active_item, context,
873
                                &tr_tool->transform,
874
                                options->direction,
875
                                options->interpolation,
876
877
                                options->supersample,
                                options->recursion_level,
878
                                options->clip,
879
                                progress);
880

881
882
883
884
885
886
887
888
889
890
891
892
  if (GIMP_IS_LAYER (active_item) &&
      gimp_layer_get_mask (GIMP_LAYER (active_item)) &&
      mask_empty)
    {
      GimpLayerMask *mask = gimp_layer_get_mask (GIMP_LAYER (active_item));

      gimp_item_transform (GIMP_ITEM (mask), context,
                           &tr_tool->transform,
                           options->direction,
                           options->interpolation,
                           options->supersample,
                           options->recursion_level,
893
                           options->clip,
894
895
896
                           progress);
    }

897
898
899
900
901
  switch (options->type)
    {
    case GIMP_TRANSFORM_TYPE_LAYER:
    case GIMP_TRANSFORM_TYPE_SELECTION:
      {
902
        gboolean clip_result = options->clip;
903
904
905
906

        /*  always clip the selction and unfloated channels
         *  so they keep their size
         */
907
908
909
910
        if (tr_tool->original)
          {
            if (GIMP_IS_CHANNEL (active_item) &&
                tile_manager_bpp (tr_tool->original) == 1)
911
              clip_result = TRUE;
912
913
914
915
916
917
918
919
920
921

            ret =
              gimp_drawable_transform_tiles_affine (GIMP_DRAWABLE (active_item),
                                                    context,
                                                    tr_tool->original,
                                                    &tr_tool->transform,
                                                    options->direction,
                                                    options->interpolation,
                                                    options->supersample,
                                                    options->recursion_level,
922
                                                    clip_result,
923
924
                                                    progress);
          }
925
926
      }
      break;
927

928
    case GIMP_TRANSFORM_TYPE_PATH:
929
      gimp_item_transform (active_item, context,
930
931
932
                           &tr_tool->transform,
                           options->direction,
                           options->interpolation,
933
934
                           options->supersample,
                           options->recursion_level,
935
                           options->clip,
936
                           progress);
937
938
      break;
    }
939
940
941
942
943
944
945

  if (progress)
    gimp_progress_end (progress);

  return ret;
}

Michael Natterer's avatar
Michael Natterer committed
946
static void
947
948
gimp_transform_tool_doit (GimpTransformTool *tr_tool,
                          GimpDisplay       *gdisp)
Michael Natterer's avatar
Michael Natterer committed
949
{