gimptransformtool.c 32 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
#include "gui/gui-types.h"
Nate Summers's avatar
Nate Summers committed
30

Michael Natterer's avatar
Michael Natterer committed
31
#include "base/tile-manager.h"
32

Michael Natterer's avatar
Michael Natterer committed
33
#include "core/gimp.h"
34 35 36
#include "core/gimpchannel.h"
#include "core/gimpcontext.h"
#include "core/gimpdrawable.h"
Michael Natterer's avatar
Michael Natterer committed
37
#include "core/gimpdrawable-transform.h"
38 39 40 41
#include "core/gimpimage.h"
#include "core/gimpimage-mask.h"
#include "core/gimplayer.h"
#include "core/gimpmarshal.h"
Michael Natterer's avatar
Michael Natterer committed
42
#include "core/gimptoolinfo.h"
43

44
#include "gui/info-dialog.h"
45 46

#include "display/gimpdisplay.h"
47
#include "display/gimpdisplay-foreach.h"
Michael Natterer's avatar
Michael Natterer committed
48
#include "display/gimpdisplayshell.h"
Nate Summers's avatar
Nate Summers committed
49

50
#include "gimptransformtool.h"
51 52
#include "tool_manager.h"
#include "transform_options.h"
53

Michael Natterer's avatar
Michael Natterer committed
54
#include "floating_sel.h"
Michael Natterer's avatar
Michael Natterer committed
55
#include "gimpprogress.h"
Michael Natterer's avatar
Michael Natterer committed
56 57
#include "undo.h"
#include "path_transform.h"
Nate Summers's avatar
Nate Summers committed
58 59 60

#include "libgimp/gimpintl.h"

61

Michael Natterer's avatar
Michael Natterer committed
62 63
#define HANDLE 10

64

Michael Natterer's avatar
Michael Natterer committed
65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115
/*  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,
                                                    ToolAction         action,
                                                    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);
static void   gimp_transform_tool_cursor_update    (GimpTool          *tool,
                                                    GimpCoords        *coords,
                                                    GdkModifierType    state,
                                                    GimpDisplay       *gdisp);

static void   gimp_transform_tool_draw             (GimpDrawTool      *draw_tool);

static TileManager * gimp_transform_tool_transform (GimpTransformTool *tr_tool,
                                                    GimpDisplay       *gdisp,
                                                    TransformState     state);
static void   gimp_transform_tool_reset            (GimpTransformTool *tr_tool,
                                                    GimpDisplay       *gdisp);
static void   gimp_transform_tool_bounds           (GimpTransformTool *tr_tool,
                                                    GimpDisplay       *gdisp);
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_setup_grid       (GimpTransformTool *tr_tool,
                                                    TransformOptions  *options);
static void   gimp_transform_tool_grid_recalc      (GimpTransformTool *tr_tool);

static void   transform_ok_callback                (GtkWidget         *widget,
                                                    gpointer           data);
static void   transform_reset_callback             (GtkWidget         *widget,
                                                    gpointer           data);
116 117


118
static GimpDrawToolClass *parent_class = NULL;
119

120 121

GType
Nate Summers's avatar
Nate Summers committed
122 123
gimp_transform_tool_get_type (void)
{
124
  static GType tool_type = 0;
Nate Summers's avatar
Nate Summers committed
125 126 127

  if (! tool_type)
    {
128
      static const GTypeInfo tool_info =
Nate Summers's avatar
Nate Summers committed
129 130
      {
        sizeof (GimpTransformToolClass),
131 132 133 134 135 136 137 138
	(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
139 140
      };

141 142 143
      tool_type = g_type_register_static (GIMP_TYPE_DRAW_TOOL,
					  "GimpTransformTool", 
                                          &tool_info, 0);
Nate Summers's avatar
Nate Summers committed
144 145 146 147 148 149 150 151
    }

  return tool_type;
}

static void
gimp_transform_tool_class_init (GimpTransformToolClass *klass)
{
152
  GObjectClass      *object_class;
Nate Summers's avatar
Nate Summers committed
153 154
  GimpToolClass     *tool_class;
  GimpDrawToolClass *draw_class;
Nate Summers's avatar
Nate Summers committed
155

156 157 158
  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
159

160
  parent_class = g_type_class_peek_parent (klass);
Nate Summers's avatar
Nate Summers committed
161

162
  object_class->finalize     = gimp_transform_tool_finalize;
Nate Summers's avatar
Nate Summers committed
163

164
  tool_class->control        = gimp_transform_tool_control;
Nate Summers's avatar
Nate Summers committed
165 166 167 168
  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;
Nate Summers's avatar
Nate Summers committed
169 170

  draw_class->draw           = gimp_transform_tool_draw;
Nate Summers's avatar
Nate Summers committed
171 172 173
}

static void
Michael Natterer's avatar
Michael Natterer committed
174
gimp_transform_tool_init (GimpTransformTool *transform_tool)
Nate Summers's avatar
Nate Summers committed
175
{
Michael Natterer's avatar
Michael Natterer committed
176
  GimpTool *tool;
177
  gint      i;
Nate Summers's avatar
Nate Summers committed
178

Michael Natterer's avatar
Michael Natterer committed
179 180 181 182
  tool = GIMP_TOOL (transform_tool);

  transform_tool->function = TRANSFORM_CREATING;
  transform_tool->original = NULL;
Nate Summers's avatar
Nate Summers committed
183 184

  for (i = 0; i < TRAN_INFO_SIZE; i++)
185 186 187 188
    {
      transform_tool->trans_info[i]     = 0.0;
      transform_tool->old_trans_info[i] = 0.0;
    }
Nate Summers's avatar
Nate Summers committed
189

Michael Natterer's avatar
Michael Natterer committed
190
  gimp_matrix3_identity (transform_tool->transform);
Nate Summers's avatar
Nate Summers committed
191

Michael Natterer's avatar
Michael Natterer committed
192 193 194 195 196
  transform_tool->use_grid     = TRUE;
  transform_tool->ngx          = 0;
  transform_tool->ngy          = 0;
  transform_tool->grid_coords  = NULL;
  transform_tool->tgrid_coords = NULL;
197

198 199
  transform_tool->info_dialog  = NULL;

Nate Summers's avatar
Nate Summers committed
200 201
  tool->scroll_lock = TRUE;   /*  Disallow scrolling  */
  tool->preserve    = FALSE;  /*  Don't preserve on drawable change  */
Nate Summers's avatar
Nate Summers committed
202 203
}

204
static void
205
gimp_transform_tool_finalize (GObject *object)
Nate Summers's avatar
Nate Summers committed
206
{
207
  GimpTransformTool *tr_tool;
Nate Summers's avatar
Nate Summers committed
208

209 210 211
  tr_tool = GIMP_TRANSFORM_TOOL (object);

  if (tr_tool->original)
212 213 214 215
    {
      tile_manager_destroy (tr_tool->original);
      tr_tool->original = NULL;
    }
216

217
  if (tr_tool->info_dialog)
218
    {
219 220
      info_dialog_free (tr_tool->info_dialog);
      tr_tool->info_dialog = NULL;
221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238
    }

  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
239 240 241
gimp_transform_tool_control (GimpTool    *tool,
			     ToolAction   action,
			     GimpDisplay *gdisp)
242
{
Michael Natterer's avatar
Michael Natterer committed
243
  GimpTransformTool *transform_tool;
244

Michael Natterer's avatar
Michael Natterer committed
245
  transform_tool = GIMP_TRANSFORM_TOOL (tool);
246

247 248 249 250
  switch (action)
    {
    case PAUSE:
      break;
251

252
    case RESUME:
Michael Natterer's avatar
Michael Natterer committed
253
      gimp_transform_tool_recalc (transform_tool, gdisp);
254
      break;
255

256
    case HALT:
Michael Natterer's avatar
Michael Natterer committed
257
      gimp_transform_tool_reset (transform_tool, gdisp);
258
      return; /* don't upchain */
259
      break;
260

261 262 263 264
    default:
      break;
    }

Michael Natterer's avatar
Michael Natterer committed
265
  GIMP_TOOL_CLASS (parent_class)->control (tool, action, gdisp);
266 267 268
}

static void
269 270 271 272 273
gimp_transform_tool_button_press (GimpTool        *tool,
                                  GimpCoords      *coords,
                                  guint32          time,
                                  GdkModifierType  state,
			          GimpDisplay     *gdisp)
Nate Summers's avatar
Nate Summers committed
274
{
Michael Natterer's avatar
Michael Natterer committed
275
  GimpTransformTool *tr_tool;
276
  GimpDrawTool      *draw_tool;
Michael Natterer's avatar
Michael Natterer committed
277 278 279
  GimpDisplayShell  *shell;
  GimpDrawable      *drawable;
  gint               off_x, off_y;
Nate Summers's avatar
Nate Summers committed
280

Michael Natterer's avatar
Michael Natterer committed
281
  tr_tool   = GIMP_TRANSFORM_TOOL (tool);
282
  draw_tool = GIMP_DRAW_TOOL (tool);
Nate Summers's avatar
Nate Summers committed
283

Michael Natterer's avatar
Michael Natterer committed
284 285
  shell = GIMP_DISPLAY_SHELL (gdisp->shell);

Nate Summers's avatar
Nate Summers committed
286 287
  drawable = gimp_image_active_drawable (gdisp->gimage);

Michael Natterer's avatar
Michael Natterer committed
288
  if (tr_tool->function == TRANSFORM_CREATING && tool->state == ACTIVE)
Nate Summers's avatar
Nate Summers committed
289
    {
290 291
      gint i;

Nate Summers's avatar
Nate Summers committed
292 293
      /*  Save the current transformation info  */
      for (i = 0; i < TRAN_INFO_SIZE; i++)
294
	tr_tool->old_trans_info[i] = tr_tool->trans_info[i];
Nate Summers's avatar
Nate Summers committed
295 296 297 298 299 300
    }

  /*  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
301
  if (gdisp == tool->gdisp)
Nate Summers's avatar
Nate Summers committed
302
    {
303 304
      gdouble closest_dist;
      gdouble dist;
305

306 307
      closest_dist = gimp_draw_tool_calc_distance (draw_tool, gdisp,
                                                   coords->x, coords->y,
Michael Natterer's avatar
Michael Natterer committed
308 309
                                                   tr_tool->tx1, tr_tool->ty1);
      tr_tool->function = TRANSFORM_HANDLE_1;
Nate Summers's avatar
Nate Summers committed
310

311 312
      dist = gimp_draw_tool_calc_distance (draw_tool, gdisp,
                                           coords->x, coords->y,
Michael Natterer's avatar
Michael Natterer committed
313
                                           tr_tool->tx2, tr_tool->ty2);
Nate Summers's avatar
Nate Summers committed
314 315 316
      if (dist < closest_dist)
	{
	  closest_dist = dist;
Michael Natterer's avatar
Michael Natterer committed
317
	  tr_tool->function = TRANSFORM_HANDLE_2;
Nate Summers's avatar
Nate Summers committed
318 319
	}

320 321
      dist = gimp_draw_tool_calc_distance (draw_tool, gdisp,
                                           coords->x, coords->y,
Michael Natterer's avatar
Michael Natterer committed
322
                                           tr_tool->tx3, tr_tool->ty3);
Nate Summers's avatar
Nate Summers committed
323 324 325
      if (dist < closest_dist)
	{
	  closest_dist = dist;
Michael Natterer's avatar
Michael Natterer committed
326
	  tr_tool->function = TRANSFORM_HANDLE_3;
Nate Summers's avatar
Nate Summers committed
327 328
	}

329 330
      dist = gimp_draw_tool_calc_distance (draw_tool, gdisp,
                                           coords->x, coords->y,
Michael Natterer's avatar
Michael Natterer committed
331
                                           tr_tool->tx4, tr_tool->ty4);
Nate Summers's avatar
Nate Summers committed
332 333 334
      if (dist < closest_dist)
	{
	  closest_dist = dist;
Michael Natterer's avatar
Michael Natterer committed
335
	  tr_tool->function = TRANSFORM_HANDLE_4;
Nate Summers's avatar
Nate Summers committed
336 337
	}

338
      if (gimp_draw_tool_on_handle (draw_tool, gdisp,
339
                                    coords->x, coords->y,
340
                                    GIMP_HANDLE_CIRCLE,
Michael Natterer's avatar
Michael Natterer committed
341
                                    tr_tool->tcx, tr_tool->tcy,
342 343 344
                                    HANDLE, HANDLE,
                                    GIMP_HANDLE_CIRCLE,
                                    FALSE))
Nate Summers's avatar
Nate Summers committed
345
	{
Michael Natterer's avatar
Michael Natterer committed
346
	  tr_tool->function = TRANSFORM_HANDLE_CENTER;
Nate Summers's avatar
Nate Summers committed
347 348 349
	}

      /*  Save the current pointer position  */
Michael Natterer's avatar
Michael Natterer committed
350 351
      tr_tool->lastx = tr_tool->startx = coords->x;
      tr_tool->lasty = tr_tool->starty = coords->y;
Nate Summers's avatar
Nate Summers committed
352

Michael Natterer's avatar
Michael Natterer committed
353
      gdk_pointer_grab (shell->canvas->window, FALSE,
Nate Summers's avatar
Nate Summers committed
354 355 356
			GDK_POINTER_MOTION_HINT_MASK |
			GDK_BUTTON1_MOTION_MASK |
			GDK_BUTTON_RELEASE_MASK,
357
			NULL, NULL, time);
Nate Summers's avatar
Nate Summers committed
358 359 360 361 362 363 364 365 366

      tool->state = ACTIVE;
      return;
    }

  /*  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);
367 368 369 370 371

  if (coords->x >= off_x &&
      coords->y >= off_y &&
      coords->x < (off_x + gimp_drawable_width (drawable)) &&
      coords->y < (off_y + gimp_drawable_height (drawable)))
372 373
    {
      if (gimage_mask_is_empty (gdisp->gimage) ||
374
	  gimage_mask_value (gdisp->gimage, coords->x, coords->y))
375 376 377 378 379 380 381 382 383 384 385 386 387 388
	{
	  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)
389 390 391 392 393
            {
              g_warning ("%s: tool_already ACTIVE", G_GNUC_FUNCTION);

              gimp_transform_tool_reset (tr_tool, gdisp);
            }
394 395 396 397 398 399 400 401 402 403

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

	  /*  Find the transform bounds for some tools (like scale,
	   *  perspective) that actually need the bounds for
	   *  initializing
	   */
Michael Natterer's avatar
Michael Natterer committed
404
	  gimp_transform_tool_bounds (tr_tool, gdisp);
405 406

	  /*  Initialize the transform tool */
Michael Natterer's avatar
Michael Natterer committed
407
	  gimp_transform_tool_transform (tr_tool, gdisp, TRANSFORM_INIT);
408 409

	  /*  Recalculate the transform tool  */
Michael Natterer's avatar
Michael Natterer committed
410
	  gimp_transform_tool_recalc (tr_tool, gdisp);
411

412 413 414
          /*  start drawing the bounding box and handles...  */
          gimp_draw_tool_start (GIMP_DRAW_TOOL (tool), shell->canvas->window);

415
	  /*  recall this function to find which handle we're dragging  */
Michael Natterer's avatar
Michael Natterer committed
416
          gimp_transform_tool_button_press (tool, coords, time, state, gdisp);
417 418
	}
    }
Nate Summers's avatar
Nate Summers committed
419 420
}

421
static void
422 423 424 425 426
gimp_transform_tool_button_release (GimpTool        *tool,
                                    GimpCoords      *coords,
                                    guint32          time,
			            GdkModifierType  state,
			            GimpDisplay     *gdisp)
Nate Summers's avatar
Nate Summers committed
427
{
Michael Natterer's avatar
Michael Natterer committed
428
  GimpTransformTool *tr_tool;
Nate Summers's avatar
Nate Summers committed
429
  gint               i;
Nate Summers's avatar
Nate Summers committed
430

Michael Natterer's avatar
Michael Natterer committed
431
  tr_tool = GIMP_TRANSFORM_TOOL (tool);
Nate Summers's avatar
Nate Summers committed
432 433

  /*  if we are creating, there is nothing to be done...exit  */
Michael Natterer's avatar
Michael Natterer committed
434
  if (tr_tool->function == TRANSFORM_CREATING)
Nate Summers's avatar
Nate Summers committed
435 436 437
    return;

  /*  release of the pointer grab  */
438
  gdk_pointer_ungrab (time);
Nate Summers's avatar
Nate Summers committed
439 440 441
  gdk_flush ();

  /*  if the 3rd button isn't pressed, transform the selected mask  */
442
  if (! (state & GDK_BUTTON3_MASK))
Nate Summers's avatar
Nate Summers committed
443 444
    {
      /* Shift-clicking is another way to approve the transform  */
445
      if ((state & GDK_SHIFT_MASK) || ! tr_tool->use_grid)
Nate Summers's avatar
Nate Summers committed
446
	{
Michael Natterer's avatar
Michael Natterer committed
447
	  gimp_transform_tool_doit (tr_tool, gdisp);
Nate Summers's avatar
Nate Summers committed
448 449 450 451 452
	}
      else
	{
	  /*  Only update the paths preview */
	  path_transform_current_path (gdisp->gimage,
Michael Natterer's avatar
Michael Natterer committed
453
				       tr_tool->transform, TRUE);
Nate Summers's avatar
Nate Summers committed
454 455 456 457
	}
    }
  else
    {
458
      gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
Nate Summers's avatar
Nate Summers committed
459 460 461

      /*  Restore the previous transformation info  */
      for (i = 0; i < TRAN_INFO_SIZE; i++)
462
	tr_tool->trans_info[i] = tr_tool->old_trans_info[i];
Nate Summers's avatar
Nate Summers committed
463 464

      /*  recalculate the tool's transformation matrix  */
Michael Natterer's avatar
Michael Natterer committed
465
      gimp_transform_tool_recalc (tr_tool, gdisp);
Nate Summers's avatar
Nate Summers committed
466

467
      gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
Nate Summers's avatar
Nate Summers committed
468 469 470

      /* Update the paths preview */
      path_transform_current_path (gdisp->gimage,
Michael Natterer's avatar
Michael Natterer committed
471
				   tr_tool->transform, TRUE);
Nate Summers's avatar
Nate Summers committed
472 473 474
    }
}

475
static void
476 477 478 479 480
gimp_transform_tool_motion (GimpTool        *tool,
                            GimpCoords      *coords,
                            guint32          time,
		            GdkModifierType  state,
		            GimpDisplay     *gdisp)
Nate Summers's avatar
Nate Summers committed
481
{
Michael Natterer's avatar
Michael Natterer committed
482
  GimpTransformTool *transform_tool;
Nate Summers's avatar
Nate Summers committed
483

Michael Natterer's avatar
Michael Natterer committed
484
  transform_tool = GIMP_TRANSFORM_TOOL (tool);
Nate Summers's avatar
Nate Summers committed
485

486
  /*  if we are creating, there is nothing to be done so exit.  */
Michael Natterer's avatar
Michael Natterer committed
487
  if (transform_tool->function == TRANSFORM_CREATING)
Nate Summers's avatar
Nate Summers committed
488 489
    return;

490
  gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
Nate Summers's avatar
Nate Summers committed
491

Michael Natterer's avatar
Michael Natterer committed
492 493 494
  transform_tool->curx  = coords->x;
  transform_tool->cury  = coords->y;
  transform_tool->state = state;
Nate Summers's avatar
Nate Summers committed
495 496

  /*  recalculate the tool's transformation matrix  */
Michael Natterer's avatar
Michael Natterer committed
497
  gimp_transform_tool_transform (transform_tool, gdisp, TRANSFORM_MOTION);
Nate Summers's avatar
Nate Summers committed
498

Michael Natterer's avatar
Michael Natterer committed
499 500
  transform_tool->lastx = transform_tool->curx;
  transform_tool->lasty = transform_tool->cury;
Nate Summers's avatar
Nate Summers committed
501

502
  gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
Nate Summers's avatar
Nate Summers committed
503 504
}

505
static void
506 507 508 509
gimp_transform_tool_cursor_update (GimpTool        *tool,
                                   GimpCoords      *coords,
			           GdkModifierType  state,
			           GimpDisplay     *gdisp)
Nate Summers's avatar
Nate Summers committed
510
{
Michael Natterer's avatar
Michael Natterer committed
511 512
  GimpDrawable  *drawable;
  GdkCursorType  ctype = GDK_TOP_LEFT_ARROW;
Nate Summers's avatar
Nate Summers committed
513 514 515

  if ((drawable = gimp_image_active_drawable (gdisp->gimage)))
    {
516 517 518 519
      gint off_x, off_y;

      gimp_drawable_offsets (drawable, &off_x, &off_y);

Nate Summers's avatar
Nate Summers committed
520
      if (GIMP_IS_LAYER (drawable) &&
521
          gimp_layer_get_mask (GIMP_LAYER (drawable)))
Nate Summers's avatar
Nate Summers committed
522 523 524
	{
	  ctype = GIMP_BAD_CURSOR;
	}
525 526 527 528
      else if (coords->x >= off_x &&
	       coords->y >= off_y &&
	       coords->x < (off_x + drawable->width) &&
	       coords->y < (off_y + drawable->height))
Nate Summers's avatar
Nate Summers committed
529 530
	{
	  if (gimage_mask_is_empty (gdisp->gimage) ||
531
	      gimage_mask_value (gdisp->gimage, coords->x, coords->y))
Nate Summers's avatar
Nate Summers committed
532 533 534 535 536 537
	    {
	      ctype = GIMP_MOUSE_CURSOR;
	    }
	}
    }

538
  gimp_display_shell_install_tool_cursor (GIMP_DISPLAY_SHELL (gdisp->shell),
Michael Natterer's avatar
Michael Natterer committed
539 540 541
                                          ctype,
                                          tool->tool_cursor,
                                          GIMP_CURSOR_MODIFIER_NONE);
Nate Summers's avatar
Nate Summers committed
542 543
}

544
static void
545
gimp_transform_tool_draw (GimpDrawTool *draw_tool)
Nate Summers's avatar
Nate Summers committed
546
{
547
  GimpTransformTool *tr_tool;
Michael Natterer's avatar
Michael Natterer committed
548
  TransformOptions  *options;
549 550 551
  gint               i, k, gci;

  tr_tool = GIMP_TRANSFORM_TOOL (draw_tool);
Nate Summers's avatar
Nate Summers committed
552

553 554 555
  if (! tr_tool->use_grid)
    return;

Michael Natterer's avatar
Michael Natterer committed
556 557
  options = (TransformOptions *) GIMP_TOOL (draw_tool)->tool_info->tool_options;

Nate Summers's avatar
Nate Summers committed
558
  /*  draw the bounding box  */
559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574
  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
575 576 577

  /*  Draw the grid */

578
  if ((tr_tool->grid_coords != NULL) && (tr_tool->tgrid_coords != NULL))
Nate Summers's avatar
Nate Summers committed
579 580
    {
      gci = 0;
Nate Summers's avatar
Nate Summers committed
581
      k = tr_tool->ngx + tr_tool->ngy;
582

Nate Summers's avatar
Nate Summers committed
583 584
      for (i = 0; i < k; i++)
	{
585 586 587 588 589 590
          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
591 592 593 594 595
	  gci += 4;
	}
    }

  /*  draw the tool handles  */
596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619
  gimp_draw_tool_draw_handle (draw_tool,
                              GIMP_HANDLE_SQUARE,
                              tr_tool->tx1, tr_tool->ty1,
                              HANDLE, HANDLE,
                              GTK_ANCHOR_CENTER,
                              FALSE);
  gimp_draw_tool_draw_handle (draw_tool,
                              GIMP_HANDLE_SQUARE,
                              tr_tool->tx2, tr_tool->ty2,
                              HANDLE, HANDLE,
                              GTK_ANCHOR_CENTER,
                              FALSE);
  gimp_draw_tool_draw_handle (draw_tool,
                              GIMP_HANDLE_SQUARE,
                              tr_tool->tx3, tr_tool->ty3,
                              HANDLE, HANDLE,
                              GTK_ANCHOR_CENTER,
                              FALSE);
  gimp_draw_tool_draw_handle (draw_tool,
                              GIMP_HANDLE_SQUARE,
                              tr_tool->tx4, tr_tool->ty4,
                              HANDLE, HANDLE,
                              GTK_ANCHOR_CENTER,
                              FALSE);
Nate Summers's avatar
Nate Summers committed
620 621

  /*  draw the center  */
622 623 624 625 626 627
  gimp_draw_tool_draw_handle (draw_tool,
                              GIMP_HANDLE_FILLED_CIRCLE,
                              tr_tool->tcx, tr_tool->tcy,
                              HANDLE, HANDLE,
                              GTK_ANCHOR_CENTER,
                              FALSE);
Nate Summers's avatar
Nate Summers committed
628

Michael Natterer's avatar
Michael Natterer committed
629
  if (options->show_path)
Nate Summers's avatar
Nate Summers committed
630 631 632
    {
      GimpMatrix3 tmp_matrix;

Michael Natterer's avatar
Michael Natterer committed
633
      if (options->direction == GIMP_TRANSFORM_BACKWARD)
Nate Summers's avatar
Nate Summers committed
634
	{
Nate Summers's avatar
Nate Summers committed
635
	  gimp_matrix3_invert (tr_tool->transform, tmp_matrix);
Nate Summers's avatar
Nate Summers committed
636 637 638
	}
      else
	{
Nate Summers's avatar
Nate Summers committed
639
	  gimp_matrix3_duplicate (tr_tool->transform, tmp_matrix);
Nate Summers's avatar
Nate Summers committed
640 641
	}

642 643
      path_transform_draw_current (GIMP_TOOL (draw_tool)->gdisp,
                                   draw_tool, tmp_matrix);
Nate Summers's avatar
Nate Summers committed
644 645 646
    }
}

Michael Natterer's avatar
Michael Natterer committed
647 648 649 650 651 652 653
static TileManager *
gimp_transform_tool_transform (GimpTransformTool   *tool,
                               GimpDisplay         *gdisp,
			       TransformState       state)
{
  g_return_val_if_fail (GIMP_IS_TRANSFORM_TOOL (tool), NULL);

654
  return GIMP_TRANSFORM_TOOL_GET_CLASS (tool)->transform (tool, gdisp, state);
Michael Natterer's avatar
Michael Natterer committed
655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725
}

static void
gimp_transform_tool_doit (GimpTransformTool  *tr_tool,
		          GimpDisplay        *gdisp)
{
  GimpDisplayShell *shell;
  GimpTool         *tool;
  TileManager      *new_tiles;
  TransformUndo    *tu;
  PathUndo         *pundo;
  gboolean          new_layer;
  gint              i;

  gimp_set_busy (gdisp->gimage->gimp);

  tool = GIMP_TOOL (tr_tool);

  shell = GIMP_DISPLAY_SHELL (gdisp->shell);

  /* 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
   */
  tool->preserve = TRUE;

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

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

  pundo = path_transform_start_undo (gdisp->gimage);

  /*  Send the request for the transformation to the tool...
   */
  new_tiles = gimp_transform_tool_transform (tr_tool, gdisp, TRANSFORM_FINISH);

  gimp_transform_tool_transform (tr_tool, gdisp, TRANSFORM_INIT);

  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);

      /*  create and initialize the transform_undo structure  */
      tu = g_new0 (TransformUndo, 1);
      tu->tool_ID   = tool->ID;
      tu->tool_type = G_TYPE_FROM_INSTANCE (tool);

      for (i = 0; i < TRAN_INFO_SIZE; i++)
726
	tu->trans_info[i] = tr_tool->old_trans_info[i];
Michael Natterer's avatar
Michael Natterer committed
727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765

      tu->original  = NULL;
      tu->path_undo = pundo;

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

      undo_push_transform (gdisp->gimage, 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;

  gimp_unset_busy (gdisp->gimage->gimp);

  gdisplays_flush ();

  gimp_transform_tool_reset (tr_tool, gdisp);
}

TileManager *
gimp_transform_tool_transform_tiles (GimpTransformTool *transform_tool,
                                     const gchar       *progress_text)
{
  GimpTool         *tool;
  TransformOptions *options;
  GimpProgress     *progress;
  TileManager      *ret;

  g_return_val_if_fail (GIMP_IS_TRANSFORM_TOOL (transform_tool), NULL);
  g_return_val_if_fail (progress_text != NULL, NULL);

766 767
  if (transform_tool->info_dialog)
    gtk_widget_set_sensitive (GTK_WIDGET (transform_tool->info_dialog), FALSE);
Michael Natterer's avatar
Michael Natterer committed
768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790

  tool = GIMP_TOOL (transform_tool);

  options = (TransformOptions *) tool->tool_info->tool_options;

  progress = progress_start (tool->gdisp, progress_text, FALSE, NULL, NULL);

  ret = gimp_drawable_transform_tiles_affine (gimp_image_active_drawable (tool->gdisp->gimage),
                                              transform_tool->original,
                                              options->smoothing,
                                              options->clip,
                                              transform_tool->transform,
                                              options->direction,
                                              progress ? progress_update_and_flush :
                                              (GimpProgressFunc) NULL,
                                              progress);

  if (progress)
    progress_end (progress);

  return ret;
}

Nate Summers's avatar
Nate Summers committed
791
void
Nate Summers's avatar
Nate Summers committed
792
gimp_transform_tool_transform_bounding_box (GimpTransformTool *tr_tool)
Nate Summers's avatar
Nate Summers committed
793
{
Nate Summers's avatar
Nate Summers committed
794 795 796 797
  GimpTool  *tool;
  gint       i, k;
  gint       gci;

798
  tool = GIMP_TOOL (tr_tool);
Nate Summers's avatar
Nate Summers committed
799 800 801 802 803 804 805 806 807 808 809 810 811

  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
812

813 814 815
  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
816

Nate Summers's avatar
Nate Summers committed
817 818
  if (tr_tool->grid_coords != NULL &&
      tr_tool->tgrid_coords != NULL)
Nate Summers's avatar
Nate Summers committed
819 820
    {
      gci = 0;
Nate Summers's avatar
Nate Summers committed
821
      k  = (tr_tool->ngx + tr_tool->ngy) * 2;
822

Nate Summers's avatar
Nate Summers committed
823 824
      for (i = 0; i < k; i++)
	{
Nate Summers's avatar
Nate Summers committed
825 826 827 828 829
	  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
830 831 832 833 834
	  gci += 2;
	}
    }
}

835
static void
836
gimp_transform_tool_reset (GimpTransformTool *tr_tool,
837
		           GimpDisplay       *gdisp)
Nate Summers's avatar
Nate Summers committed
838
{
Nate Summers's avatar
Nate Summers committed
839
  GimpTool *tool;
Nate Summers's avatar
Nate Summers committed
840

841
  tool = GIMP_TOOL (tr_tool);
Nate Summers's avatar
Nate Summers committed
842

Nate Summers's avatar
Nate Summers committed
843
  if (tr_tool->original)
844 845 846 847
    {
      tile_manager_destroy (tr_tool->original);
      tr_tool->original = NULL;
    }
Nate Summers's avatar
Nate Summers committed
848 849

  /*  inactivate the tool  */
Nate Summers's avatar
Nate Summers committed
850
  tr_tool->function = TRANSFORM_CREATING;
851

852
  gimp_draw_tool_stop (GIMP_DRAW_TOOL (tr_tool));
853 854 855

  if (tr_tool->info_dialog)
    info_dialog_popdown (tr_tool->info_dialog);
Nate Summers's avatar
Nate Summers committed
856 857 858 859 860 861 862

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

static void
863
gimp_transform_tool_bounds (GimpTransformTool *tr_tool,
864
		            GimpDisplay       *gdisp)
Nate Summers's avatar
Nate Summers committed
865
{
866 867 868
  TileManager  *tiles;
  GimpDrawable *drawable;
  gint          offset_x, offset_y;
Nate Summers's avatar
Nate Summers committed
869

870 871
  tiles    = tr_tool->original;
  drawable = gimp_image_active_drawable (gdisp->gimage);
Nate Summers's avatar
Nate Summers committed
872 873 874 875 876

  /*  find the boundaries  */
  if (tiles)
    {
      tile_manager_get_offsets (tiles,
Nate Summers's avatar
Nate Summers committed
877 878 879 880
				&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
881 882 883 884 885
    }
  else
    {
      gimp_drawable_offsets (drawable, &offset_x, &offset_y);
      gimp_drawable_mask_bounds (drawable,
Nate Summers's avatar
Nate Summers committed
886 887 888 889 890 891
				 &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
892
    }
Nate Summers's avatar
Nate Summers committed
893 894 895

  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
896

Michael Natterer's avatar
Michael Natterer committed
897 898 899 900 901
  if (tr_tool->use_grid)
    {
      /*  changing the bounds invalidates any grid we may have  */
      gimp_transform_tool_grid_recalc (tr_tool);
    }
Nate Summers's avatar
Nate Summers committed
902 903
}

904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924
void
gimp_transform_tool_info_dialog_connect (GimpTransformTool *tr_tool,
                                         const gchar       *ok_button)
{
  g_return_if_fail (GIMP_IS_TRANSFORM_TOOL (tr_tool));
  g_return_if_fail (ok_button != NULL);

  if (tr_tool->info_dialog)
    {
      gimp_dialog_create_action_area (GIMP_DIALOG (tr_tool->info_dialog->shell),

                                      ok_button, transform_ok_callback,
                                      tr_tool, NULL, NULL, TRUE, FALSE,

                                      _("Reset"), transform_reset_callback,
                                      tr_tool, NULL, NULL, FALSE, FALSE,

                                      NULL);
    }
}

Nate Summers's avatar
Nate Summers committed
925
void
Michael Natterer's avatar
Michael Natterer committed
926
gimp_transform_tool_grid_density_changed (GimpTransformTool *transform_tool)
Nate Summers's avatar
Nate Summers committed
927
{
Michael Natterer's avatar
Michael Natterer committed
928
  if (transform_tool->function == TRANSFORM_CREATING)
Nate Summers's avatar
Nate Summers committed
929 930
    return;

Michael Natterer's avatar
Michael Natterer committed
931
  gimp_draw_tool_pause (GIMP_DRAW_TOOL (transform_tool));
932

Michael Natterer's avatar
Michael Natterer committed
933 934
  gimp_transform_tool_grid_recalc (transform_tool);
  gimp_transform_tool_transform_bounding_box (transform_tool);
935

Michael Natterer's avatar
Michael Natterer committed
936
  gimp_draw_tool_resume (GIMP_DRAW_TOOL (transform_tool));
Nate Summers's avatar
Nate Summers committed
937 938 939
}

void
Michael Natterer's avatar
Michael Natterer committed
940 941
gimp_transform_tool_show_path_changed (GimpTransformTool *transform_tool,
                                       gint               type /* a truly undescriptive name */)
Nate Summers's avatar
Nate Summers committed
942
{
Michael Natterer's avatar
Michael Natterer committed
943
  if (transform_tool->function == TRANSFORM_CREATING)
Nate Summers's avatar
Nate Summers committed
944 945 946
    return;

  if (type)
Michael Natterer's avatar
Michael Natterer committed
947
    gimp_draw_tool_pause (GIMP_DRAW_TOOL (transform_tool));
Nate Summers's avatar
Nate Summers committed
948
  else
Michael Natterer's avatar
Michael Natterer committed
949
    gimp_draw_tool_resume (GIMP_DRAW_TOOL (transform_tool));
Nate Summers's avatar
Nate Summers committed
950 951 952
}

static void
Nate Summers's avatar
Nate Summers committed
953
gimp_transform_tool_grid_recalc (GimpTransformTool *tr_tool)
Nate Summers's avatar
Nate Summers committed
954
{
Michael Natterer's avatar
Michael Natterer committed
955 956 957 958
  TransformOptions *options;

  options = (TransformOptions *) GIMP_TOOL (tr_tool)->tool_info->tool_options;

Nate Summers's avatar
Nate Summers committed
959
  if (tr_tool->grid_coords != NULL)
Nate Summers's avatar
Nate Summers committed
960
    {
Nate Summers's avatar
Nate Summers committed
961 962
      g_free (tr_tool->grid_coords);
      tr_tool->grid_coords = NULL;
Nate Summers's avatar
Nate Summers committed
963
    }
964

Nate Summers's avatar
Nate Summers committed
965
  if (tr_tool->tgrid_coords != NULL)
Nate Summers's avatar
Nate Summers committed
966
    {
Nate Summers's avatar
Nate Summers committed
967 968
      g_free (tr_tool->tgrid_coords);
      tr_tool->tgrid_coords = NULL;
Nate Summers's avatar
Nate Summers committed
969
    }
970

Michael Natterer's avatar
Michael Natterer committed