gimptransformtool.c 38.5 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"
29

30
#ifdef __GNUC__
31
#warning FIXME #include "gui/gui-types.h"
32
#endif
33
#include "gui/gui-types.h"
Nate Summers's avatar
Nate Summers committed
34

Michael Natterer's avatar
Michael Natterer committed
35
#include "base/tile-manager.h"
36

Michael Natterer's avatar
Michael Natterer committed
37
#include "core/gimp.h"
38 39
#include "core/gimpcontext.h"
#include "core/gimpdrawable.h"
Michael Natterer's avatar
Michael Natterer committed
40
#include "core/gimpdrawable-transform.h"
41 42
#include "core/gimpimage.h"
#include "core/gimpimage-mask.h"
43
#include "core/gimpimage-undo.h"
44
#include "core/gimpimage-undo-push.h"
45 46
#include "core/gimplayer.h"
#include "core/gimpmarshal.h"
Michael Natterer's avatar
Michael Natterer committed
47
#include "core/gimptoolinfo.h"
48

Michael Natterer's avatar
Michael Natterer committed
49 50
#include "widgets/gimpviewabledialog.h"

51
#include "gui/info-dialog.h"
52 53

#include "display/gimpdisplay.h"
54
#include "display/gimpdisplay-foreach.h"
Michael Natterer's avatar
Michael Natterer committed
55
#include "display/gimpprogress.h"
Nate Summers's avatar
Nate Summers committed
56

57
#include "gimptransformoptions.h"
58 59
#include "gimptransformtool.h"
#include "gimptransformtool-undo.h"
60
#include "tool_manager.h"
61

Michael Natterer's avatar
Michael Natterer committed
62
#include "path_transform.h"
Nate Summers's avatar
Nate Summers committed
63 64 65

#include "libgimp/gimpintl.h"

66

67
#define HANDLE_SIZE 10
Michael Natterer's avatar
Michael Natterer committed
68

69

Michael Natterer's avatar
Michael Natterer committed
70 71 72 73 74 75 76 77
/*  local function prototypes  */

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

static void   gimp_transform_tool_finalize         (GObject           *object);

static void   gimp_transform_tool_control          (GimpTool          *tool,
78
                                                    GimpToolAction     action,
Michael Natterer's avatar
Michael Natterer committed
79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94
                                                    GimpDisplay       *gdisp);
static void   gimp_transform_tool_button_press     (GimpTool          *tool,
                                                    GimpCoords        *coords,
                                                    guint32            time,
                                                    GdkModifierType    state,
                                                    GimpDisplay       *gdisp);
static void   gimp_transform_tool_button_release   (GimpTool          *tool,
                                                    GimpCoords        *coords,
                                                    guint32            time,
                                                    GdkModifierType    state,
                                                    GimpDisplay       *gdisp);
static void   gimp_transform_tool_motion           (GimpTool          *tool,
                                                    GimpCoords        *coords,
                                                    guint32            time,
                                                    GdkModifierType    state,
                                                    GimpDisplay       *gdisp);
95 96 97 98 99
static void   gimp_transform_tool_modifier_key     (GimpTool          *tool,
                                                    GdkModifierType    key,
                                                    gboolean           press,
                                                    GdkModifierType    state,
                                                    GimpDisplay       *gdisp);
100 101 102 103
static void   gimp_transform_tool_oper_update      (GimpTool          *tool,
                                                    GimpCoords        *coords,
                                                    GdkModifierType    state,
                                                    GimpDisplay       *gdisp);
Michael Natterer's avatar
Michael Natterer committed
104 105 106 107 108 109 110
static void   gimp_transform_tool_cursor_update    (GimpTool          *tool,
                                                    GimpCoords        *coords,
                                                    GdkModifierType    state,
                                                    GimpDisplay       *gdisp);

static void   gimp_transform_tool_draw             (GimpDrawTool      *draw_tool);

111 112 113 114
static TileManager *
              gimp_transform_tool_real_transform   (GimpTransformTool *tr_tool,
                                                    GimpDisplay       *gdisp);

Michael Natterer's avatar
Michael Natterer committed
115
static void   gimp_transform_tool_reset            (GimpTransformTool *tr_tool);
Michael Natterer's avatar
Michael Natterer committed
116 117
static void   gimp_transform_tool_bounds           (GimpTransformTool *tr_tool,
                                                    GimpDisplay       *gdisp);
Michael Natterer's avatar
Michael Natterer committed
118 119 120
static void   gimp_transform_tool_dialog           (GimpTransformTool *tr_tool);
static void   gimp_transform_tool_prepare          (GimpTransformTool *tr_tool,
                                                    GimpDisplay       *gdisp);
Michael Natterer's avatar
Michael Natterer committed
121 122 123 124 125 126 127
static void   gimp_transform_tool_recalc           (GimpTransformTool *tr_tool,
                                                    GimpDisplay       *gdisp);
static void   gimp_transform_tool_doit             (GimpTransformTool *tr_tool,
                                                    GimpDisplay       *gdisp);
static void   gimp_transform_tool_grid_recalc      (GimpTransformTool *tr_tool);

static void   transform_reset_callback             (GtkWidget         *widget,
Michael Natterer's avatar
Michael Natterer committed
128 129 130 131 132
                                                    GimpTransformTool *tr_tool);
static void   transform_cancel_callback            (GtkWidget         *widget,
                                                    GimpTransformTool *tr_tool);
static void   transform_ok_callback                (GtkWidget         *widget,
                                                    GimpTransformTool *tr_tool);
133

134 135 136 137 138 139 140
static void   gimp_transform_tool_notify_grid   (GimpTransformOptions *options,
                                                 GParamSpec           *pspec,
                                                 GimpTransformTool    *tr_tool);
static void   gimp_transform_tool_notify_path   (GimpTransformOptions *options,
                                                 GParamSpec           *pspec,
                                                 GimpTransformTool    *tr_tool);

141

142
static GimpDrawToolClass *parent_class = NULL;
143

144 145

GType
Nate Summers's avatar
Nate Summers committed
146 147
gimp_transform_tool_get_type (void)
{
148
  static GType tool_type = 0;
Nate Summers's avatar
Nate Summers committed
149 150 151

  if (! tool_type)
    {
152
      static const GTypeInfo tool_info =
Nate Summers's avatar
Nate Summers committed
153 154
      {
        sizeof (GimpTransformToolClass),
155 156 157 158 159 160 161 162
	(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
163 164
      };

165 166 167
      tool_type = g_type_register_static (GIMP_TYPE_DRAW_TOOL,
					  "GimpTransformTool", 
                                          &tool_info, 0);
Nate Summers's avatar
Nate Summers committed
168 169 170 171 172 173 174 175
    }

  return tool_type;
}

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

180 181 182
  object_class = G_OBJECT_CLASS (klass);
  tool_class   = GIMP_TOOL_CLASS (klass);
  draw_class   = GIMP_DRAW_TOOL_CLASS (klass);
Nate Summers's avatar
Nate Summers committed
183

184
  parent_class = g_type_class_peek_parent (klass);
Nate Summers's avatar
Nate Summers committed
185

186
  object_class->finalize     = gimp_transform_tool_finalize;
Nate Summers's avatar
Nate Summers committed
187

188
  tool_class->control        = gimp_transform_tool_control;
Nate Summers's avatar
Nate Summers committed
189 190 191
  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;
192
  tool_class->modifier_key   = gimp_transform_tool_modifier_key;
193
  tool_class->oper_update    = gimp_transform_tool_oper_update;
Nate Summers's avatar
Nate Summers committed
194
  tool_class->cursor_update  = gimp_transform_tool_cursor_update;
Nate Summers's avatar
Nate Summers committed
195 196

  draw_class->draw           = gimp_transform_tool_draw;
Michael Natterer's avatar
Michael Natterer committed
197 198 199 200 201

  klass->dialog              = NULL;
  klass->prepare             = NULL;
  klass->motion              = NULL;
  klass->recalc              = NULL;
202
  klass->transform           = gimp_transform_tool_real_transform;
Nate Summers's avatar
Nate Summers committed
203 204 205
}

static void
Michael Natterer's avatar
Michael Natterer committed
206
gimp_transform_tool_init (GimpTransformTool *tr_tool)
Nate Summers's avatar
Nate Summers committed
207
{
Michael Natterer's avatar
Michael Natterer committed
208
  GimpTool *tool;
209
  gint      i;
Nate Summers's avatar
Nate Summers committed
210

Michael Natterer's avatar
Michael Natterer committed
211
  tool = GIMP_TOOL (tr_tool);
Michael Natterer's avatar
Michael Natterer committed
212

Michael Natterer's avatar
Michael Natterer committed
213 214 215
  gimp_tool_control_set_scroll_lock (tool->control, TRUE);
  gimp_tool_control_set_preserve    (tool->control, FALSE);

Michael Natterer's avatar
Michael Natterer committed
216 217
  tr_tool->function = TRANSFORM_CREATING;
  tr_tool->original = NULL;
Nate Summers's avatar
Nate Summers committed
218 219

  for (i = 0; i < TRAN_INFO_SIZE; i++)
220
    {
Michael Natterer's avatar
Michael Natterer committed
221 222
      tr_tool->trans_info[i]     = 0.0;
      tr_tool->old_trans_info[i] = 0.0;
223
    }
Nate Summers's avatar
Nate Summers committed
224

Michael Natterer's avatar
Michael Natterer committed
225
  gimp_matrix3_identity (tr_tool->transform);
226

227 228 229 230 231 232 233 234 235
  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;

  tr_tool->notify_connected = FALSE;
  tr_tool->show_path        = FALSE;
236

237 238 239
  tr_tool->shell_desc       = NULL;
  tr_tool->progress_text    = _("Transforming...");
  tr_tool->info_dialog      = NULL;
Nate Summers's avatar
Nate Summers committed
240 241
}

242
static void
243
gimp_transform_tool_finalize (GObject *object)
Nate Summers's avatar
Nate Summers committed
244
{
245
  GimpTransformTool *tr_tool;
Nate Summers's avatar
Nate Summers committed
246

247 248 249
  tr_tool = GIMP_TRANSFORM_TOOL (object);

  if (tr_tool->original)
250 251 252 253
    {
      tile_manager_destroy (tr_tool->original);
      tr_tool->original = NULL;
    }
254

255
  if (tr_tool->info_dialog)
256
    {
257 258
      info_dialog_free (tr_tool->info_dialog);
      tr_tool->info_dialog = NULL;
259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276
    }

  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);
}

static void
277 278 279
gimp_transform_tool_control (GimpTool       *tool,
			     GimpToolAction  action,
			     GimpDisplay    *gdisp)
280
{
Michael Natterer's avatar
Michael Natterer committed
281
  GimpTransformTool *tr_tool;
282

Michael Natterer's avatar
Michael Natterer committed
283
  tr_tool = GIMP_TRANSFORM_TOOL (tool);
284

285 286 287 288
  switch (action)
    {
    case PAUSE:
      break;
289

290
    case RESUME:
Michael Natterer's avatar
Michael Natterer committed
291
      gimp_transform_tool_recalc (tr_tool, gdisp);
292
      break;
293

294
    case HALT:
Michael Natterer's avatar
Michael Natterer committed
295
      gimp_transform_tool_reset (tr_tool);
296
      return; /* don't upchain */
297
      break;
298

299 300 301 302
    default:
      break;
    }

Michael Natterer's avatar
Michael Natterer committed
303
  GIMP_TOOL_CLASS (parent_class)->control (tool, action, gdisp);
304 305 306
}

static void
307 308 309 310 311
gimp_transform_tool_button_press (GimpTool        *tool,
                                  GimpCoords      *coords,
                                  guint32          time,
                                  GdkModifierType  state,
			          GimpDisplay     *gdisp)
Nate Summers's avatar
Nate Summers committed
312
{
Michael Natterer's avatar
Michael Natterer committed
313
  GimpTransformTool *tr_tool;
314
  GimpDrawTool      *draw_tool;
Michael Natterer's avatar
Michael Natterer committed
315 316
  GimpDrawable      *drawable;
  gint               off_x, off_y;
Nate Summers's avatar
Nate Summers committed
317

Michael Natterer's avatar
Michael Natterer committed
318
  tr_tool   = GIMP_TRANSFORM_TOOL (tool);
319
  draw_tool = GIMP_DRAW_TOOL (tool);
Nate Summers's avatar
Nate Summers committed
320 321 322

  drawable = gimp_image_active_drawable (gdisp->gimage);

323
  if (tr_tool->use_grid && ! tr_tool->notify_connected)
324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343
    {
      tr_tool->show_path =
        GIMP_TRANSFORM_OPTIONS (tool->tool_info->tool_options)->show_path;

      g_signal_connect_object (tool->tool_info->tool_options,
                               "notify::grid-type",
                               G_CALLBACK (gimp_transform_tool_notify_grid),
                               tr_tool, 0);
      g_signal_connect_object (tool->tool_info->tool_options,
                               "notify::grid-size",
                               G_CALLBACK (gimp_transform_tool_notify_grid),
                               tr_tool, 0);
      g_signal_connect_object (tool->tool_info->tool_options,
                               "notify::show-path",
                               G_CALLBACK (gimp_transform_tool_notify_path),
                               tr_tool, 0);

      tr_tool->notify_connected = TRUE;
    }

344 345 346 347 348 349 350 351 352
  if (gdisp != tool->gdisp)
    {
      /*  Initialisation stuff: if the cursor is clicked inside the current
       *  selection, show the bounding box and handles...
       */
      gimp_drawable_offsets (drawable, &off_x, &off_y);

      if (coords->x >= off_x &&
          coords->y >= off_y &&
Michael Natterer's avatar
Michael Natterer committed
353 354 355 356 357
          coords->x < (off_x + gimp_drawable_width (drawable))  &&
          coords->y < (off_y + gimp_drawable_height (drawable)) &&

          (gimp_image_mask_is_empty (gdisp->gimage) ||
           gimp_image_mask_value (gdisp->gimage, coords->x, coords->y)))
358
        {
Michael Natterer's avatar
Michael Natterer committed
359 360
          if (GIMP_IS_LAYER (drawable) &&
              gimp_layer_get_mask (GIMP_LAYER (drawable)))
361
            {
Michael Natterer's avatar
Michael Natterer committed
362 363
              g_message (_("Transformations do not work on\n"
                           "layers that contain layer masks."));
364
              gimp_tool_control_halt (tool->control);
Michael Natterer's avatar
Michael Natterer committed
365 366
              return;
            }
367

Michael Natterer's avatar
Michael Natterer committed
368 369 370 371 372 373
          /*  If the tool is already active, clear the current state
           *  and reset
           */
          if (gimp_tool_control_is_active (tool->control))
            {
              g_warning ("%s: tool_already ACTIVE", G_GNUC_FUNCTION);
374

Michael Natterer's avatar
Michael Natterer committed
375 376
              gimp_transform_tool_reset (tr_tool);
            }
377

Michael Natterer's avatar
Michael Natterer committed
378 379 380 381
          /*  Set the pointer to the active display  */
          tool->gdisp    = gdisp;
          tool->drawable = drawable;
          gimp_tool_control_activate (tool->control);
382

Michael Natterer's avatar
Michael Natterer committed
383 384 385 386 387
          /*  Find the transform bounds for some tools (like scale,
           *  perspective) that actually need the bounds for
           *  initializing
           */
          gimp_transform_tool_bounds (tr_tool, gdisp);
388

Michael Natterer's avatar
Michael Natterer committed
389 390 391
          /*  Initialize the transform tool */
          if (! tr_tool->info_dialog)
            gimp_transform_tool_dialog (tr_tool);
392

Michael Natterer's avatar
Michael Natterer committed
393
          gimp_transform_tool_prepare (tr_tool, gdisp);
394

Michael Natterer's avatar
Michael Natterer committed
395 396
          /*  Recalculate the transform tool  */
          gimp_transform_tool_recalc (tr_tool, gdisp);
397

Michael Natterer's avatar
Michael Natterer committed
398 399
          /*  start drawing the bounding box and handles...  */
          gimp_draw_tool_start (GIMP_DRAW_TOOL (tool), gdisp);
400

Michael Natterer's avatar
Michael Natterer committed
401 402 403 404
          /*  find which handle we're dragging  */
          gimp_transform_tool_oper_update (tool, coords, state, gdisp);

          tr_tool->function = TRANSFORM_CREATING;
405 406 407
        }
    }

408 409
  if (tr_tool->function == TRANSFORM_CREATING &&
      gimp_tool_control_is_active (tool->control))
Nate Summers's avatar
Nate Summers committed
410
    {
411 412
      gint i;

Nate Summers's avatar
Nate Summers committed
413 414
      /*  Save the current transformation info  */
      for (i = 0; i < TRAN_INFO_SIZE; i++)
415
	tr_tool->old_trans_info[i] = tr_tool->trans_info[i];
Nate Summers's avatar
Nate Summers committed
416 417 418 419 420 421
    }

  /*  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
   */
Michael Natterer's avatar
Michael Natterer committed
422
  if (gdisp == tool->gdisp)
Nate Summers's avatar
Nate Summers committed
423 424
    {
      /*  Save the current pointer position  */
Michael Natterer's avatar
Michael Natterer committed
425 426
      tr_tool->lastx = tr_tool->startx = coords->x;
      tr_tool->lasty = tr_tool->starty = coords->y;
Nate Summers's avatar
Nate Summers committed
427

428
      gimp_tool_control_activate (tool->control);
429
    }
Nate Summers's avatar
Nate Summers committed
430 431
}

432
static void
433 434 435 436 437
gimp_transform_tool_button_release (GimpTool        *tool,
                                    GimpCoords      *coords,
                                    guint32          time,
			            GdkModifierType  state,
			            GimpDisplay     *gdisp)
Nate Summers's avatar
Nate Summers committed
438
{
Michael Natterer's avatar
Michael Natterer committed
439
  GimpTransformTool *tr_tool;
Nate Summers's avatar
Nate Summers committed
440
  gint               i;
Nate Summers's avatar
Nate Summers committed
441

Michael Natterer's avatar
Michael Natterer committed
442
  tr_tool = GIMP_TRANSFORM_TOOL (tool);
Nate Summers's avatar
Nate Summers committed
443 444

  /*  if we are creating, there is nothing to be done...exit  */
445
  if (tr_tool->function == TRANSFORM_CREATING && tr_tool->use_grid)
Nate Summers's avatar
Nate Summers committed
446 447 448
    return;

  /*  if the 3rd button isn't pressed, transform the selected mask  */
449
  if (! (state & GDK_BUTTON3_MASK))
Nate Summers's avatar
Nate Summers committed
450 451
    {
      /* Shift-clicking is another way to approve the transform  */
452
      if ((state & GDK_SHIFT_MASK) || ! tr_tool->use_grid)
Nate Summers's avatar
Nate Summers committed
453
	{
Michael Natterer's avatar
Michael Natterer committed
454
	  gimp_transform_tool_doit (tr_tool, gdisp);
Nate Summers's avatar
Nate Summers committed
455 456 457 458 459
	}
      else
	{
	  /*  Only update the paths preview */
	  path_transform_current_path (gdisp->gimage,
Michael Natterer's avatar
Michael Natterer committed
460
				       tr_tool->transform, TRUE);
Nate Summers's avatar
Nate Summers committed
461 462 463 464
	}
    }
  else
    {
465
      gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
Nate Summers's avatar
Nate Summers committed
466 467 468

      /*  Restore the previous transformation info  */
      for (i = 0; i < TRAN_INFO_SIZE; i++)
469
	tr_tool->trans_info[i] = tr_tool->old_trans_info[i];
Nate Summers's avatar
Nate Summers committed
470 471

      /*  recalculate the tool's transformation matrix  */
Michael Natterer's avatar
Michael Natterer committed
472
      gimp_transform_tool_recalc (tr_tool, gdisp);
Nate Summers's avatar
Nate Summers committed
473

474
      gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
Nate Summers's avatar
Nate Summers committed
475 476 477

      /* Update the paths preview */
      path_transform_current_path (gdisp->gimage,
Michael Natterer's avatar
Michael Natterer committed
478
				   tr_tool->transform, TRUE);
Nate Summers's avatar
Nate Summers committed
479 480 481
    }
}

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

Michael Natterer's avatar
Michael Natterer committed
492
  tr_tool = GIMP_TRANSFORM_TOOL (tool);
Nate Summers's avatar
Nate Summers committed
493

494
  /*  if we are creating, there is nothing to be done so exit.  */
495
  if (tr_tool->function == TRANSFORM_CREATING || ! tr_tool->use_grid)
Nate Summers's avatar
Nate Summers committed
496 497
    return;

498
  gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
Nate Summers's avatar
Nate Summers committed
499

Michael Natterer's avatar
Michael Natterer committed
500 501 502
  tr_tool->curx  = coords->x;
  tr_tool->cury  = coords->y;
  tr_tool->state = state;
Nate Summers's avatar
Nate Summers committed
503 504

  /*  recalculate the tool's transformation matrix  */
Michael Natterer's avatar
Michael Natterer committed
505 506 507 508 509
  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
510

Michael Natterer's avatar
Michael Natterer committed
511 512 513 514 515 516
      if (tr_tool_class->recalc)
        tr_tool_class->recalc (tr_tool, gdisp);
    }

  tr_tool->lastx = tr_tool->curx;
  tr_tool->lasty = tr_tool->cury;
Nate Summers's avatar
Nate Summers committed
517

518
  gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
Nate Summers's avatar
Nate Summers committed
519 520
}

521 522 523 524 525 526 527
static void
gimp_transform_tool_modifier_key (GimpTool        *tool,
                                  GdkModifierType  key,
                                  gboolean         press,
                                  GdkModifierType  state,
                                  GimpDisplay     *gdisp)
{
528
  GimpTransformOptions *options;
529

530
  options = GIMP_TRANSFORM_OPTIONS (tool->tool_info->tool_options);
531

532
  if (key == GDK_CONTROL_MASK)
533
    {
534
      g_object_set (options,
535 536
                    "constrain-1", ! options->constrain_1,
                    NULL);
537
    }
538
  else if (key == GDK_MOD1_MASK)
539
    {
540
      g_object_set (options,
541 542
                    "constrain-2", ! options->constrain_2,
                    NULL);
543 544 545
    }
}

546 547 548 549 550 551 552 553 554 555 556 557
static void
gimp_transform_tool_oper_update (GimpTool        *tool,
                                 GimpCoords      *coords,
                                 GdkModifierType  state,
                                 GimpDisplay     *gdisp)
{
  GimpTransformTool *tr_tool;
  GimpDrawTool      *draw_tool;

  tr_tool   = GIMP_TRANSFORM_TOOL (tool);
  draw_tool = GIMP_DRAW_TOOL (tool);

558 559 560
  if (! tr_tool->use_grid)
    return;

561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601
  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)
	{
	  closest_dist = dist;
	  tr_tool->function = TRANSFORM_HANDLE_2;
	}

      dist = gimp_draw_tool_calc_distance (draw_tool, gdisp,
                                           coords->x, coords->y,
                                           tr_tool->tx3, tr_tool->ty3);
      if (dist < closest_dist)
	{
	  closest_dist = dist;
	  tr_tool->function = TRANSFORM_HANDLE_3;
	}

      dist = gimp_draw_tool_calc_distance (draw_tool, gdisp,
                                           coords->x, coords->y,
                                           tr_tool->tx4, tr_tool->ty4);
      if (dist < closest_dist)
	{
	  closest_dist = dist;
	  tr_tool->function = TRANSFORM_HANDLE_4;
	}

      if (gimp_draw_tool_on_handle (draw_tool, gdisp,
                                    coords->x, coords->y,
                                    GIMP_HANDLE_CIRCLE,
                                    tr_tool->tcx, tr_tool->tcy,
602
                                    HANDLE_SIZE, HANDLE_SIZE,
603 604 605 606 607 608 609 610
                                    GTK_ANCHOR_CENTER,
                                    FALSE))
	{
	  tr_tool->function = TRANSFORM_HANDLE_CENTER;
	}
    }
}

611
static void
612 613 614 615
gimp_transform_tool_cursor_update (GimpTool        *tool,
                                   GimpCoords      *coords,
			           GdkModifierType  state,
			           GimpDisplay     *gdisp)
Nate Summers's avatar
Nate Summers committed
616
{
617 618 619 620
  GimpTransformTool  *tr_tool;
  GimpDrawable       *drawable;

  tr_tool = GIMP_TRANSFORM_TOOL (tool);
Nate Summers's avatar
Nate Summers committed
621

Michael Natterer's avatar
Michael Natterer committed
622
  if (tr_tool->use_grid)
Nate Summers's avatar
Nate Summers committed
623
    {
Michael Natterer's avatar
Michael Natterer committed
624 625
      GdkCursorType      ctype     = GDK_TOP_LEFT_ARROW;
      GimpCursorModifier cmodifier = GIMP_CURSOR_MODIFIER_NONE;
626

Michael Natterer's avatar
Michael Natterer committed
627 628 629
     if ((drawable = gimp_image_active_drawable (gdisp->gimage)))
        {
          gint off_x, off_y;
630

Michael Natterer's avatar
Michael Natterer committed
631
          gimp_drawable_offsets (drawable, &off_x, &off_y);
Nate Summers's avatar
Nate Summers committed
632

Michael Natterer's avatar
Michael Natterer committed
633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649
          if (GIMP_IS_LAYER (drawable) &&
              gimp_layer_get_mask (GIMP_LAYER (drawable)))
            {
              ctype = GIMP_BAD_CURSOR;
            }
          else if (coords->x >= off_x &&
                   coords->y >= off_y &&
                   coords->x < (off_x + drawable->width) &&
                   coords->y < (off_y + drawable->height))
            {
              if (gimp_image_mask_is_empty (gdisp->gimage) ||
                  gimp_image_mask_value (gdisp->gimage, coords->x, coords->y))
                {
                  ctype = GIMP_MOUSE_CURSOR;
                }
            }
        }
650

Michael Natterer's avatar
Michael Natterer committed
651 652 653 654 655 656 657 658
      if (tr_tool->use_center && tr_tool->function == TRANSFORM_HANDLE_CENTER)
        {
          cmodifier = GIMP_CURSOR_MODIFIER_MOVE;
        }

      gimp_tool_control_set_cursor          (tool->control, ctype);
      gimp_tool_control_set_cursor_modifier (tool->control, cmodifier);
    }
659 660

  GIMP_TOOL_CLASS (parent_class)->cursor_update (tool, coords, state, gdisp);
Nate Summers's avatar
Nate Summers committed
661 662
}

663
static void
664
gimp_transform_tool_draw (GimpDrawTool *draw_tool)
Nate Summers's avatar
Nate Summers committed
665
{
666 667 668
  GimpTransformTool    *tr_tool;
  GimpTransformOptions *options;
  gint                  i, k, gci;
669 670

  tr_tool = GIMP_TRANSFORM_TOOL (draw_tool);
Nate Summers's avatar
Nate Summers committed
671

672 673 674
  if (! tr_tool->use_grid)
    return;

675 676
  options = GIMP_TRANSFORM_OPTIONS (GIMP_TOOL (draw_tool)->tool_info->tool_options);

Nate Summers's avatar
Nate Summers committed
677
  /*  draw the bounding box  */
678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693
  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
694 695 696

  /*  Draw the grid */

697
  if ((tr_tool->grid_coords != NULL) && (tr_tool->tgrid_coords != NULL))
Nate Summers's avatar
Nate Summers committed
698 699
    {
      gci = 0;
Nate Summers's avatar
Nate Summers committed
700
      k = tr_tool->ngx + tr_tool->ngy;
701

Nate Summers's avatar
Nate Summers committed
702 703
      for (i = 0; i < k; i++)
	{
704 705 706 707 708 709
          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);
Nate Summers's avatar
Nate Summers committed
710 711 712 713 714
	  gci += 4;
	}
    }

  /*  draw the tool handles  */
715 716 717
  gimp_draw_tool_draw_handle (draw_tool,
                              GIMP_HANDLE_SQUARE,
                              tr_tool->tx1, tr_tool->ty1,
718
                              HANDLE_SIZE, HANDLE_SIZE,
719 720 721 722 723
                              GTK_ANCHOR_CENTER,
                              FALSE);
  gimp_draw_tool_draw_handle (draw_tool,
                              GIMP_HANDLE_SQUARE,
                              tr_tool->tx2, tr_tool->ty2,
724
                              HANDLE_SIZE, HANDLE_SIZE,
725 726 727 728 729
                              GTK_ANCHOR_CENTER,
                              FALSE);
  gimp_draw_tool_draw_handle (draw_tool,
                              GIMP_HANDLE_SQUARE,
                              tr_tool->tx3, tr_tool->ty3,
730
                              HANDLE_SIZE, HANDLE_SIZE,
731 732 733 734 735
                              GTK_ANCHOR_CENTER,
                              FALSE);
  gimp_draw_tool_draw_handle (draw_tool,
                              GIMP_HANDLE_SQUARE,
                              tr_tool->tx4, tr_tool->ty4,
736
                              HANDLE_SIZE, HANDLE_SIZE,
737 738
                              GTK_ANCHOR_CENTER,
                              FALSE);
Nate Summers's avatar
Nate Summers committed
739 740

  /*  draw the center  */
741 742 743 744 745
  if (tr_tool->use_center)
    {
      gimp_draw_tool_draw_handle (draw_tool,
                                  GIMP_HANDLE_FILLED_CIRCLE,
                                  tr_tool->tcx, tr_tool->tcy,
746
                                  HANDLE_SIZE, HANDLE_SIZE,
747 748 749
                                  GTK_ANCHOR_CENTER,
                                  FALSE);
    }
Nate Summers's avatar
Nate Summers committed
750

751
  if (tr_tool->show_path)
Nate Summers's avatar
Nate Summers committed
752 753 754
    {
      GimpMatrix3 tmp_matrix;

Michael Natterer's avatar
Michael Natterer committed
755
      if (options->direction == GIMP_TRANSFORM_BACKWARD)
Nate Summers's avatar
Nate Summers committed
756
	{
Nate Summers's avatar
Nate Summers committed
757
	  gimp_matrix3_invert (tr_tool->transform, tmp_matrix);
Nate Summers's avatar
Nate Summers committed
758 759 760
	}
      else
	{
Nate Summers's avatar
Nate Summers committed
761
	  gimp_matrix3_duplicate (tr_tool->transform, tmp_matrix);
Nate Summers's avatar
Nate Summers committed
762 763
	}

764 765
      path_transform_draw_current (GIMP_TOOL (draw_tool)->gdisp,
                                   draw_tool, tmp_matrix);
Nate Summers's avatar
Nate Summers committed
766 767 768
    }
}

769 770 771 772
static TileManager *
gimp_transform_tool_real_transform (GimpTransformTool *tr_tool,
                                    GimpDisplay       *gdisp)
{
773 774 775 776 777
  GimpTool             *tool;
  GimpDrawable         *drawable;
  GimpTransformOptions *options;
  GimpProgress         *progress;
  TileManager          *ret;
778

779 780
  tool    = GIMP_TOOL (tr_tool);
  options = GIMP_TRANSFORM_OPTIONS (tool->tool_info->tool_options);
781 782 783 784 785 786 787

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

  progress = gimp_progress_start (gdisp, tr_tool->progress_text, FALSE,
                                  NULL, NULL);

788 789 790
  drawable = gimp_image_active_drawable (gdisp->gimage);

  ret = gimp_drawable_transform_tiles_affine (drawable,
791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806
                                              tr_tool->original,
                                              options->interpolation,
                                              options->clip,
                                              tr_tool->transform,
                                              options->direction,
                                              progress ?
                                              gimp_progress_update_and_flush : 
                                              NULL,
                                              progress);

  if (progress)
    gimp_progress_end (progress);

  return ret;
}

Michael Natterer's avatar
Michael Natterer committed
807 808 809 810
static void
gimp_transform_tool_doit (GimpTransformTool  *tr_tool,
		          GimpDisplay        *gdisp)
{
Michael Natterer's avatar
Michael Natterer committed
811 812 813 814
  GimpTool    *tool;
  TileManager *new_tiles;
  GSList      *path_undo;
  gboolean     new_layer;
Michael Natterer's avatar
Michael Natterer committed
815 816 817 818 819 820 821 822 823 824 825

  gimp_set_busy (gdisp->gimage->gimp);

  tool = GIMP_TOOL (tr_tool);

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

  /*  We're going to dirty this image, but we want to keep the tool
   *  around
   */
826
  gimp_tool_control_set_preserve (tool->control, TRUE);
Michael Natterer's avatar
Michael Natterer committed
827 828

  /*  Start a transform undo group  */
829
  gimp_image_undo_group_start (gdisp->gimage, GIMP_UNDO_GROUP_TRANSFORM,
830
                               tool->tool_info->blurb);
Michael Natterer's avatar
Michael Natterer committed
831 832 833 834 835 836 837 838 839 840 841 842 843 844 845

  /* 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 (tr_tool->original == NULL);

  /*  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);

  tr_tool->original = gimp_drawable_transform_cut (tool->drawable,
                                                   &new_layer);

Michael Natterer's avatar
Michael Natterer committed
846
  path_undo = path_transform_start_undo (gdisp->gimage);
Michael Natterer's avatar
Michael Natterer committed
847 848 849

  /*  Send the request for the transformation to the tool...
   */
850 851
  new_tiles = GIMP_TRANSFORM_TOOL_GET_CLASS (tr_tool)->transform (tr_tool,
                                                                  gdisp);
Michael Natterer's avatar
Michael Natterer committed
852

Michael Natterer's avatar
Michael Natterer committed
853
  gimp_transform_tool_prepare (tr_tool, gdisp);
Michael Natterer's avatar
Michael Natterer committed
854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870
  gimp_transform_tool_recalc (tr_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_drawable_transform_paste (tool->drawable,
                                     new_tiles,
                                     new_layer);

      /*  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);

871 872 873 874 875 876
      gimp_transform_tool_push_undo (gdisp->gimage, NULL,
                                     tool->ID,
                                     G_TYPE_FROM_INSTANCE (tool),
                                     tr_tool->old_trans_info,
                                     NULL,
                                     path_undo);
Michael Natterer's avatar
Michael Natterer committed
877 878 879
    }

  /*  push the undo group end  */
880
  gimp_image_undo_group_end (gdisp->gimage);
Michael Natterer's avatar
Michael Natterer committed
881 882 883 884

  /*  We're done dirtying the image, and would like to be restarted
   *  if the image gets dirty while the tool exists
   */
885
  gimp_tool_control_set_preserve (tool->control, FALSE);
Michael Natterer's avatar
Michael Natterer committed
886 887 888

  gimp_unset_busy (gdisp->gimage->gimp);

889
  gimp_image_flush (gdisp->gimage);
Michael Natterer's avatar
Michael Natterer committed
890

Michael Natterer's avatar
Michael Natterer committed
891
  gimp_transform_tool_reset (tr_tool);
Michael Natterer's avatar
Michael Natterer committed
892 893
}

Nate Summers's avatar
Nate Summers committed
894
void
Nate Summers's avatar
Nate Summers committed
895
gimp_transform_tool_transform_bounding_box (GimpTransformTool *tr_tool)
Nate Summers's avatar
Nate Summers committed
896
{
897
  g_return_if_fail (GIMP_IS_TRANSFORM_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

916
  if (tr_tool->grid_coords != NULL && tr_tool->tgrid_coords != NULL)
Nate Summers's avatar
Nate Summers committed
917
    {
918 919 920
      gint i, k;
      gint gci;

Nate Summers's avatar
Nate Summers committed
921
      gci = 0;
922
      k   = (tr_tool->ngx + tr_tool->ngy) * 2;
923

Nate Summers's avatar
Nate Summers committed
924 925
      for (i = 0; i < k; i++)
	{
Nate Summers's avatar
Nate Summers committed
926 927
	  gimp_matrix3_transform_point (tr_tool->transform,
					tr_tool->grid_coords[gci],
928 929 930
					tr_tool->grid_coords[gci + 1],
					&tr_tool->tgrid_coords[gci],
					&tr_tool->tgrid_coords[gci + 1]);
Nate Summers's avatar
Nate Summers committed
931 932 933 934 935
	  gci += 2;
	}
    }
}

936
static void
Michael Natterer's avatar
Michael Natterer committed
937
gimp_transform_tool_reset (GimpTransformTool *tr_tool)
Nate Summers's avatar
Nate Summers committed
938
{
Nate Summers's avatar
Nate Summers committed
939
  GimpTool *tool;