gimpcurvestool.c 31.9 KB
Newer Older
1
/* GIMP - The GNU Image Manipulation Program
Elliot Lee's avatar
Elliot Lee committed
2 3
 * Copyright (C) 1995 Spencer Kimball and Peter Mattis
 *
4
 * This program is free software: you can redistribute it and/or modify
Elliot Lee's avatar
Elliot Lee committed
5
 * it under the terms of the GNU General Public License as published by
6
 * the Free Software Foundation; either version 3 of the License, or
Elliot Lee's avatar
Elliot Lee committed
7 8 9 10 11 12 13 14
 * (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
15
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
Elliot Lee's avatar
Elliot Lee committed
16
 */
Sven Neumann's avatar
Sven Neumann committed
17

18 19
#include "config.h"

20 21 22
#include <errno.h>

#include <glib/gstdio.h>
23
#include <gegl.h>
Sven Neumann's avatar
Sven Neumann committed
24 25
#include <gtk/gtk.h>

26
#include "libgimpbase/gimpbase.h"
27
#include "libgimpcolor/gimpcolor.h"
28
#include "libgimpconfig/gimpconfig.h"
29
#include "libgimpwidgets/gimpwidgets.h"
30

31
#include "tools-types.h"
Michael Natterer's avatar
Michael Natterer committed
32

33 34
#include "operations/gimpcurvesconfig.h"
#include "operations/gimpoperationcurves.h"
35

36
#include "core/gimp.h"
37
#include "core/gimpcurve.h"
Sven Neumann's avatar
Sven Neumann committed
38
#include "core/gimpcurve-map.h"
Michael Natterer's avatar
Michael Natterer committed
39
#include "core/gimpdrawable.h"
40
#include "core/gimpdrawable-histogram.h"
41
#include "core/gimperror.h"
42
#include "core/gimphistogram.h"
Michael Natterer's avatar
Michael Natterer committed
43 44
#include "core/gimpimage.h"

45
#include "widgets/gimpcolorbar.h"
46
#include "widgets/gimphelp-ids.h"
47
#include "widgets/gimpcurveview.h"
48
#include "widgets/gimpwidgets-utils.h"
Michael Natterer's avatar
Michael Natterer committed
49

50 51
#include "display/gimpdisplay.h"

Michael Natterer's avatar
Michael Natterer committed
52
#include "gimpcurvestool.h"
53
#include "gimphistogramoptions.h"
Sven Neumann's avatar
Sven Neumann committed
54

55
#include "gimp-intl.h"
56

57

58 59 60
#define GRAPH_SIZE 256
#define BAR_SIZE    12
#define RADIUS       4
Elliot Lee's avatar
Elliot Lee committed
61 62


Michael Natterer's avatar
Michael Natterer committed
63 64
/*  local function prototypes  */

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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131
static void       gimp_curves_tool_constructed     (GObject              *object);

static gboolean   gimp_curves_tool_initialize      (GimpTool             *tool,
                                                    GimpDisplay          *display,
                                                    GError              **error);
static void       gimp_curves_tool_button_release  (GimpTool             *tool,
                                                    const GimpCoords     *coords,
                                                    guint32               time,
                                                    GdkModifierType       state,
                                                    GimpButtonReleaseType release_type,
                                                    GimpDisplay          *display);
static gboolean   gimp_curves_tool_key_press       (GimpTool             *tool,
                                                    GdkEventKey          *kevent,
                                                    GimpDisplay          *display);
static void       gimp_curves_tool_oper_update     (GimpTool             *tool,
                                                    const GimpCoords     *coords,
                                                    GdkModifierType       state,
                                                    gboolean              proximity,
                                                    GimpDisplay          *display);

static void       gimp_curves_tool_color_picked    (GimpColorTool        *color_tool,
                                                    GimpColorPickState    pick_state,
                                                    gdouble               x,
                                                    gdouble               y,
                                                    const Babl           *sample_format,
                                                    gpointer              pixel,
                                                    const GimpRGB        *color);

static gchar    * gimp_curves_tool_get_operation   (GimpFilterTool       *filter_tool,
                                                    gchar               **title,
                                                    gchar               **description,
                                                    gchar               **undo_desc,
                                                    gchar               **icon_name,
                                                    gchar               **help_id);
static void       gimp_curves_tool_dialog          (GimpFilterTool       *filter_tool);
static void       gimp_curves_tool_reset           (GimpFilterTool       *filter_tool);
static gboolean   gimp_curves_tool_settings_import (GimpFilterTool       *filter_tool,
                                                    GInputStream         *input,
                                                    GError              **error);
static gboolean   gimp_curves_tool_settings_export (GimpFilterTool       *filter_tool,
                                                    GOutputStream        *output,
                                                    GError              **error);

static void       gimp_curves_tool_export_setup    (GimpSettingsBox      *settings_box,
                                                    GtkFileChooserDialog *dialog,
                                                    gboolean              export,
                                                    GimpCurvesTool       *tool);
static void       gimp_curves_tool_update_channel  (GimpCurvesTool       *tool);
static void       gimp_curves_tool_config_notify   (GObject              *object,
                                                    GParamSpec           *pspec,
                                                    GimpCurvesTool       *tool);

static void       curves_channel_callback          (GtkWidget            *widget,
                                                    GimpCurvesTool       *tool);
static void       curves_channel_reset_callback    (GtkWidget            *widget,
                                                    GimpCurvesTool       *tool);

static gboolean   curves_menu_sensitivity          (gint                  value,
                                                    gpointer              data);

static void       curves_curve_type_callback       (GtkWidget            *widget,
                                                    GimpCurvesTool       *tool);

static const GimpRGB * curves_get_channel_color    (GimpHistogramChannel  channel);


G_DEFINE_TYPE (GimpCurvesTool, gimp_curves_tool, GIMP_TYPE_FILTER_TOOL)
132 133

#define parent_class gimp_curves_tool_parent_class
134

Michael Natterer's avatar
Michael Natterer committed
135

136
/*  public functions  */
Michael Natterer's avatar
Michael Natterer committed
137 138

void
Nate Summers's avatar
Nate Summers committed
139
gimp_curves_tool_register (GimpToolRegisterCallback  callback,
140
                           gpointer                  data)
Michael Natterer's avatar
Michael Natterer committed
141
{
Nate Summers's avatar
Nate Summers committed
142
  (* callback) (GIMP_TYPE_CURVES_TOOL,
143
                GIMP_TYPE_HISTOGRAM_OPTIONS,
144
                gimp_color_options_gui,
145
                0,
146
                "gimp-curves-tool",
147
                _("Curves"),
148
                _("Curves Tool: Adjust color curves"),
149
                N_("_Curves..."), NULL,
150
                NULL, GIMP_HELP_TOOL_CURVES,
Nate Summers's avatar
Nate Summers committed
151
                GIMP_STOCK_TOOL_CURVES,
152
                data);
Michael Natterer's avatar
Michael Natterer committed
153 154
}

155 156 157

/*  private functions  */

Michael Natterer's avatar
Michael Natterer committed
158 159 160
static void
gimp_curves_tool_class_init (GimpCurvesToolClass *klass)
{
161 162 163 164
  GObjectClass        *object_class      = G_OBJECT_CLASS (klass);
  GimpToolClass       *tool_class        = GIMP_TOOL_CLASS (klass);
  GimpColorToolClass  *color_tool_class  = GIMP_COLOR_TOOL_CLASS (klass);
  GimpFilterToolClass *filter_tool_class = GIMP_FILTER_TOOL_CLASS (klass);
165

166
  object_class->constructed              = gimp_curves_tool_constructed;
167

168 169 170 171
  tool_class->initialize                 = gimp_curves_tool_initialize;
  tool_class->button_release             = gimp_curves_tool_button_release;
  tool_class->key_press                  = gimp_curves_tool_key_press;
  tool_class->oper_update                = gimp_curves_tool_oper_update;
172

173
  color_tool_class->picked               = gimp_curves_tool_color_picked;
174

175 176 177
  filter_tool_class->settings_name       = "curves";
  filter_tool_class->import_dialog_title = _("Import Curves");
  filter_tool_class->export_dialog_title = _("Export Curves");
178

179 180 181 182 183
  filter_tool_class->get_operation       = gimp_curves_tool_get_operation;
  filter_tool_class->dialog              = gimp_curves_tool_dialog;
  filter_tool_class->reset               = gimp_curves_tool_reset;
  filter_tool_class->settings_import     = gimp_curves_tool_settings_import;
  filter_tool_class->settings_export     = gimp_curves_tool_settings_export;
Michael Natterer's avatar
Michael Natterer committed
184 185 186
}

static void
187
gimp_curves_tool_init (GimpCurvesTool *tool)
Michael Natterer's avatar
Michael Natterer committed
188
{
189
  gint i;
190

191 192
  for (i = 0; i < G_N_ELEMENTS (tool->picked_color); i++)
    tool->picked_color[i] = -1.0;
Michael Natterer's avatar
Michael Natterer committed
193 194
}

195 196 197 198 199
static void
gimp_curves_tool_constructed (GObject *object)
{
  G_OBJECT_CLASS (parent_class)->constructed (object);

200
  g_signal_connect_object (GIMP_FILTER_TOOL (object)->config, "notify",
201 202 203
                           G_CALLBACK (gimp_curves_tool_config_notify),
                           object, 0);

204 205 206 207 208 209
  /*  always pick colors  */
  gimp_color_tool_enable (GIMP_COLOR_TOOL (object),
                          GIMP_COLOR_TOOL_GET_OPTIONS (object));

}

210
static gboolean
211 212 213
gimp_curves_tool_initialize (GimpTool     *tool,
                             GimpDisplay  *display,
                             GError      **error)
Michael Natterer's avatar
Michael Natterer committed
214
{
215
  GimpCurvesTool *c_tool   = GIMP_CURVES_TOOL (tool);
216 217
  GimpImage      *image    = gimp_display_get_image (display);
  GimpDrawable   *drawable = gimp_image_get_active_drawable (image);
218
  GimpHistogram  *histogram;
219

220 221 222 223
  if (! GIMP_TOOL_CLASS (parent_class)->initialize (tool, display, error))
    {
      return FALSE;
    }
224

225
  histogram = gimp_histogram_new (FALSE);
226
  gimp_drawable_calculate_histogram (drawable, histogram);
227
  gimp_histogram_view_set_background (GIMP_HISTOGRAM_VIEW (c_tool->graph),
228
                                      histogram);
229
  g_object_unref (histogram);
230

231
  if (gimp_drawable_get_component_type (drawable) == GIMP_COMPONENT_TYPE_U8)
232 233 234 235 236 237
    {
      gimp_curve_view_set_range_x (GIMP_CURVE_VIEW (c_tool->graph), 0, 255);
      gimp_curve_view_set_range_y (GIMP_CURVE_VIEW (c_tool->graph), 0, 255);
    }
  else
    {
238 239
      gimp_curve_view_set_range_x (GIMP_CURVE_VIEW (c_tool->graph), 0, 100);
      gimp_curve_view_set_range_y (GIMP_CURVE_VIEW (c_tool->graph), 0, 100);
240 241
    }

242
  return TRUE;
Michael Natterer's avatar
Michael Natterer committed
243 244 245
}

static void
246
gimp_curves_tool_button_release (GimpTool              *tool,
247
                                 const GimpCoords      *coords,
248 249 250 251
                                 guint32                time,
                                 GdkModifierType        state,
                                 GimpButtonReleaseType  release_type,
                                 GimpDisplay           *display)
Michael Natterer's avatar
Michael Natterer committed
252
{
253 254 255
  GimpCurvesTool   *c_tool      = GIMP_CURVES_TOOL (tool);
  GimpFilterTool   *filter_tool = GIMP_FILTER_TOOL (tool);
  GimpCurvesConfig *config      = GIMP_CURVES_CONFIG (filter_tool->config);
Michael Natterer's avatar
Michael Natterer committed
256

257
  if (state & gimp_get_extend_selection_mask ())
Michael Natterer's avatar
Michael Natterer committed
258
    {
259
      GimpCurve *curve = config->curve[config->channel];
260
      gdouble    value = c_tool->picked_color[config->channel];
261
      gint       closest;
262

263
      closest = gimp_curve_get_closest_point (curve, value);
264

265
      gimp_curve_view_set_selected (GIMP_CURVE_VIEW (c_tool->graph),
266
                                    closest);
267

268
      gimp_curve_set_point (curve, closest,
269
                            value, gimp_curve_map_value (curve, value));
Michael Natterer's avatar
Michael Natterer committed
270
    }
271
  else if (state & gimp_get_toggle_behavior_mask ())
Michael Natterer's avatar
Michael Natterer committed
272
    {
273
      GimpHistogramChannel channel;
274

275 276 277
      for (channel = GIMP_HISTOGRAM_VALUE;
           channel <= GIMP_HISTOGRAM_ALPHA;
           channel++)
278
        {
279 280
          GimpCurve *curve = config->curve[channel];
          gdouble    value = c_tool->picked_color[channel];
281
          gint       closest;
282

283 284 285
          if (value != -1)
            {
              closest = gimp_curve_get_closest_point (curve, value);
286

287 288
              gimp_curve_view_set_selected (GIMP_CURVE_VIEW (c_tool->graph),
                                            closest);
289

290 291 292
              gimp_curve_set_point (curve, closest,
                                    value, gimp_curve_map_value (curve, value));
            }
293
        }
Michael Natterer's avatar
Michael Natterer committed
294 295
    }

296
  /*  chain up to halt the tool */
297 298
  GIMP_TOOL_CLASS (parent_class)->button_release (tool, coords, time, state,
                                                  release_type, display);
Michael Natterer's avatar
Michael Natterer committed
299 300
}

301
static gboolean
302 303
gimp_curves_tool_key_press (GimpTool    *tool,
                            GdkEventKey *kevent,
304
                            GimpDisplay *display)
305
{
306 307
  GimpCurvesTool *c_tool = GIMP_CURVES_TOOL (tool);

308 309 310 311 312
  if (tool->display && c_tool->graph)
    {
      if (gtk_widget_event (c_tool->graph, (GdkEvent *) kevent))
        return TRUE;
    }
313 314

  return GIMP_TOOL_CLASS (parent_class)->key_press (tool, kevent, display);
315 316 317
}

static void
318 319 320 321 322
gimp_curves_tool_oper_update (GimpTool         *tool,
                              const GimpCoords *coords,
                              GdkModifierType   state,
                              gboolean          proximity,
                              GimpDisplay      *display)
323
{
324 325
  if (gimp_filter_tool_on_guide (GIMP_FILTER_TOOL (tool),
                                 coords, display))
326
    {
327 328
      GIMP_TOOL_CLASS (parent_class)->oper_update (tool, coords, state, proximity,
                                                   display);
329
    }
330 331
  else
    {
332 333 334 335
      GimpColorPickMode  mode;
      gchar             *status      = NULL;
      GdkModifierType    extend_mask = gimp_get_extend_selection_mask ();
      GdkModifierType    toggle_mask = gimp_get_toggle_behavior_mask ();
336

337
      gimp_tool_pop_status (tool, display);
338

339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357
      if (state & extend_mask)
        {
          mode   = GIMP_COLOR_PICK_MODE_PALETTE;
          status = g_strdup (_("Click to add a control point"));
        }
      else if (state & toggle_mask)
        {
          mode   = GIMP_COLOR_PICK_MODE_PALETTE;
          status = g_strdup (_("Click to add control points to all channels"));
        }
      else
        {
          mode   = GIMP_COLOR_PICK_MODE_NONE;
          status = gimp_suggest_modifiers (_("Click to locate on curve"),
                                           (extend_mask | toggle_mask) & ~state,
                                           _("%s: add control point"),
                                           _("%s: add control points to all channels"),
                                           NULL);
        }
358

359 360 361 362 363 364 365
      GIMP_COLOR_TOOL (tool)->pick_mode = mode;

      if (proximity)
        gimp_tool_push_status (tool, display, "%s", status);

      g_free (status);
    }
366 367
}

Michael Natterer's avatar
Michael Natterer committed
368
static void
369 370
gimp_curves_tool_color_picked (GimpColorTool      *color_tool,
                               GimpColorPickState  pick_state,
371 372
                               gdouble             x,
                               gdouble             y,
373
                               const Babl         *sample_format,
374 375
                               gpointer            pixel,
                               const GimpRGB      *color)
Michael Natterer's avatar
Michael Natterer committed
376
{
377 378 379
  GimpCurvesTool   *tool        = GIMP_CURVES_TOOL (color_tool);
  GimpFilterTool   *filter_tool = GIMP_FILTER_TOOL (color_tool);
  GimpCurvesConfig *config      = GIMP_CURVES_CONFIG (filter_tool->config);
380
  GimpDrawable     *drawable;
Michael Natterer's avatar
Michael Natterer committed
381

382
  drawable = GIMP_FILTER_TOOL (tool)->drawable;
383

384 385 386
  tool->picked_color[GIMP_HISTOGRAM_RED]   = color->r;
  tool->picked_color[GIMP_HISTOGRAM_GREEN] = color->g;
  tool->picked_color[GIMP_HISTOGRAM_BLUE]  = color->b;
387

388
  if (gimp_drawable_has_alpha (drawable))
389
    tool->picked_color[GIMP_HISTOGRAM_ALPHA] = color->a;
390 391
  else
    tool->picked_color[GIMP_HISTOGRAM_ALPHA] = -1;
392

393 394
  tool->picked_color[GIMP_HISTOGRAM_VALUE] = MAX (MAX (color->r, color->g),
                                                  color->b);
BST 1999 Andy Thomas's avatar
BST 1999 Andy Thomas committed
395

396
  gimp_curve_view_set_xpos (GIMP_CURVE_VIEW (tool->graph),
397
                            tool->picked_color[config->channel]);
398 399
}

400
static gchar *
401 402 403 404 405 406
gimp_curves_tool_get_operation (GimpFilterTool  *filter_tool,
                                gchar          **title,
                                gchar          **description,
                                gchar          **undo_desc,
                                gchar          **icon_name,
                                gchar          **help_id)
407
{
408
  *description = g_strdup (_("Adjust Color Curves"));
409

410
  return g_strdup ("gimp:curves");
411
}
BST 1999 Andy Thomas's avatar
BST 1999 Andy Thomas committed
412

413

414 415 416
/*******************/
/*  Curves dialog  */
/*******************/
Elliot Lee's avatar
Elliot Lee committed
417

418
static void
419
gimp_curves_tool_dialog (GimpFilterTool *filter_tool)
Elliot Lee's avatar
Elliot Lee committed
420
{
421 422 423
  GimpCurvesTool   *tool         = GIMP_CURVES_TOOL (filter_tool);
  GimpToolOptions  *tool_options = GIMP_TOOL_GET_OPTIONS (filter_tool);
  GimpCurvesConfig *config       = GIMP_CURVES_CONFIG (filter_tool->config);
424
  GtkListStore     *store;
425
  GtkWidget        *main_vbox;
426
  GtkWidget        *frame_vbox;
427 428 429 430
  GtkWidget        *vbox;
  GtkWidget        *hbox;
  GtkWidget        *hbox2;
  GtkWidget        *label;
431
  GtkWidget        *main_frame;
432 433 434 435
  GtkWidget        *frame;
  GtkWidget        *table;
  GtkWidget        *button;
  GtkWidget        *bar;
436
  GtkWidget        *combo;
437

438
  g_signal_connect (filter_tool->settings_box, "file-dialog-setup",
439
                    G_CALLBACK (gimp_curves_tool_export_setup),
440
                    filter_tool);
441

442
  main_vbox = gimp_filter_tool_dialog_get_vbox (filter_tool);
Elliot Lee's avatar
Elliot Lee committed
443

444
  /*  The combo box for selecting channels  */
445 446 447 448
  main_frame = gimp_frame_new (NULL);
  gtk_box_pack_start (GTK_BOX (main_vbox), main_frame, TRUE, TRUE, 0);
  gtk_widget_show (main_frame);

Michael Natterer's avatar
Michael Natterer committed
449
  hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
450
  gtk_frame_set_label_widget (GTK_FRAME (main_frame), hbox);
451 452
  gtk_widget_show (hbox);

453
  label = gtk_label_new_with_mnemonic (_("Cha_nnel:"));
454 455 456
  gimp_label_set_attributes (GTK_LABEL (label),
                             PANGO_ATTR_WEIGHT, PANGO_WEIGHT_BOLD,
                             -1);
457 458 459
  gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
  gtk_widget_show (label);

460 461 462
  store = gimp_enum_store_new_with_range (GIMP_TYPE_HISTOGRAM_CHANNEL,
                                          GIMP_HISTOGRAM_VALUE,
                                          GIMP_HISTOGRAM_ALPHA);
463 464
  tool->channel_menu =
    gimp_enum_combo_box_new_with_model (GIMP_ENUM_STORE (store));
465 466
  g_object_unref (store);

467 468
  gimp_int_combo_box_set_active (GIMP_INT_COMBO_BOX (tool->channel_menu),
                                 config->channel);
469 470
  gimp_enum_combo_box_set_icon_prefix (GIMP_ENUM_COMBO_BOX (tool->channel_menu),
                                       "gimp-channel");
471 472
  gimp_int_combo_box_set_sensitivity (GIMP_INT_COMBO_BOX (tool->channel_menu),
                                      curves_menu_sensitivity, filter_tool, NULL);
473 474
  gtk_box_pack_start (GTK_BOX (hbox), tool->channel_menu, FALSE, FALSE, 0);
  gtk_widget_show (tool->channel_menu);
475

476 477 478
  g_signal_connect (tool->channel_menu, "changed",
                    G_CALLBACK (curves_channel_callback),
                    tool);
479

480
  gtk_label_set_mnemonic_widget (GTK_LABEL (label), tool->channel_menu);
481

482
  button = gtk_button_new_with_mnemonic (_("R_eset Channel"));
483
  gtk_box_pack_start (GTK_BOX (hbox), button, FALSE, FALSE, 0);
484
  gtk_widget_show (button);
485

486
  g_signal_connect (button, "clicked",
487
                    G_CALLBACK (curves_channel_reset_callback),
488
                    tool);
Elliot Lee's avatar
Elliot Lee committed
489

490
  /*  The histogram scale radio buttons  */
491 492 493
  hbox2 = gimp_prop_enum_icon_box_new (G_OBJECT (tool_options),
                                       "histogram-scale", "gimp-histogram",
                                       0, 0);
494 495
  gtk_box_pack_end (GTK_BOX (hbox), hbox2, FALSE, FALSE, 0);
  gtk_widget_show (hbox2);
496

497 498 499 500
  frame_vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 4);
  gtk_container_add (GTK_CONTAINER (main_frame), frame_vbox);
  gtk_widget_show (frame_vbox);

501
  /*  The table for the color bars and the graph  */
Elliot Lee's avatar
Elliot Lee committed
502
  table = gtk_table_new (2, 2, FALSE);
503 504
  gtk_table_set_col_spacings (GTK_TABLE (table), 2);
  gtk_table_set_row_spacings (GTK_TABLE (table), 2);
505
  gtk_box_pack_start (GTK_BOX (frame_vbox), table, TRUE, TRUE, 0);
506 507

  /*  The left color bar  */
Michael Natterer's avatar
Michael Natterer committed
508
  vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
509
  gtk_table_attach (GTK_TABLE (table), vbox, 0, 1, 0, 1,
510
                    GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 0);
511
  gtk_widget_show (vbox);
Elliot Lee's avatar
Elliot Lee committed
512 513

  frame = gtk_frame_new (NULL);
514
  gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
515
  gtk_box_pack_start (GTK_BOX (vbox), frame, TRUE, TRUE, RADIUS);
Elliot Lee's avatar
Elliot Lee committed
516 517
  gtk_widget_show (frame);

518 519 520 521
  tool->yrange = gimp_color_bar_new (GTK_ORIENTATION_VERTICAL);
  gtk_widget_set_size_request (tool->yrange, BAR_SIZE, -1);
  gtk_container_add (GTK_CONTAINER (frame), tool->yrange);
  gtk_widget_show (tool->yrange);
522

Elliot Lee's avatar
Elliot Lee committed
523 524
  /*  The curves graph  */
  frame = gtk_frame_new (NULL);
525
  gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
Elliot Lee's avatar
Elliot Lee committed
526
  gtk_table_attach (GTK_TABLE (table), frame, 1, 2, 0, 1,
527
                    GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 0);
528
  gtk_widget_show (frame);
Elliot Lee's avatar
Elliot Lee committed
529

530
  tool->graph = gimp_curve_view_new ();
531 532
  gimp_curve_view_set_range_x (GIMP_CURVE_VIEW (tool->graph), 0, 255);
  gimp_curve_view_set_range_y (GIMP_CURVE_VIEW (tool->graph), 0, 255);
533 534 535 536
  gtk_widget_set_size_request (tool->graph,
                               GRAPH_SIZE + RADIUS * 2,
                               GRAPH_SIZE + RADIUS * 2);
  g_object_set (tool->graph,
537 538 539
                "border-width", RADIUS,
                "subdivisions", 1,
                NULL);
540 541
  gtk_container_add (GTK_CONTAINER (frame), tool->graph);
  gtk_widget_show (tool->graph);
542

543 544 545 546
  g_object_bind_property (G_OBJECT (tool_options), "histogram-scale",
                          G_OBJECT (tool->graph),  "histogram-scale",
                          G_BINDING_SYNC_CREATE |
                          G_BINDING_BIDIRECTIONAL);
547 548

  /*  The bottom color bar  */
Michael Natterer's avatar
Michael Natterer committed
549
  hbox2 = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
550
  gtk_table_attach (GTK_TABLE (table), hbox2, 1, 2, 1, 2,
551
                    GTK_EXPAND | GTK_FILL, GTK_FILL, 0, 0);
552
  gtk_widget_show (hbox2);
553

Elliot Lee's avatar
Elliot Lee committed
554
  frame = gtk_frame_new (NULL);
555
  gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
556
  gtk_box_pack_start (GTK_BOX (hbox2), frame, TRUE, TRUE, RADIUS);
Elliot Lee's avatar
Elliot Lee committed
557 558
  gtk_widget_show (frame);

Michael Natterer's avatar
Michael Natterer committed
559 560
  vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
  gtk_box_set_homogeneous (GTK_BOX (vbox), TRUE);
561 562
  gtk_container_add (GTK_CONTAINER (frame), vbox);
  gtk_widget_show (vbox);
563

564 565
  tool->xrange = gimp_color_bar_new (GTK_ORIENTATION_HORIZONTAL);
  gtk_widget_set_size_request (tool->xrange, -1, BAR_SIZE / 2);
566
  gtk_box_pack_start (GTK_BOX (vbox), tool->xrange, TRUE, TRUE, 0);
567
  gtk_widget_show (tool->xrange);
568

569
  bar = gimp_color_bar_new (GTK_ORIENTATION_HORIZONTAL);
570
  gtk_box_pack_start (GTK_BOX (vbox), bar, TRUE, TRUE, 0);
571 572
  gtk_widget_show (bar);

573
  gtk_widget_show (table);
Elliot Lee's avatar
Elliot Lee committed
574

Michael Natterer's avatar
Michael Natterer committed
575
  hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
576
  gtk_box_pack_end (GTK_BOX (frame_vbox), hbox, FALSE, FALSE, 0);
577
  gtk_widget_show (hbox);
578

579 580 581
  label = gtk_label_new_with_mnemonic (_("Curve _type:"));
  gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
  gtk_widget_show (label);
582

583
  tool->curve_type = combo = gimp_enum_combo_box_new (GIMP_TYPE_CURVE_TYPE);
584 585
  gimp_enum_combo_box_set_icon_prefix (GIMP_ENUM_COMBO_BOX (combo),
                                       "gimp-curve");
586 587 588 589 590
  gimp_int_combo_box_connect (GIMP_INT_COMBO_BOX (combo), 0,
                              G_CALLBACK (curves_curve_type_callback),
                              tool);
  gtk_box_pack_start (GTK_BOX (hbox), combo, TRUE, TRUE, 0);
  gtk_widget_show (combo);
Sven Neumann's avatar
Sven Neumann committed
591 592

  gtk_label_set_mnemonic_widget (GTK_LABEL (label), combo);
593 594

  gimp_curves_tool_update_channel (tool);
Elliot Lee's avatar
Elliot Lee committed
595 596
}

597
static void
598
gimp_curves_tool_reset (GimpFilterTool *filter_tool)
599
{
600
  GimpCurvesConfig     *config = GIMP_CURVES_CONFIG (filter_tool->config);
601
  GimpCurvesConfig     *default_config;
602
  GimpHistogramChannel  channel;
603

604
  default_config = GIMP_CURVES_CONFIG (filter_tool->default_config);
605

606 607 608 609
  for (channel = GIMP_HISTOGRAM_VALUE;
       channel <= GIMP_HISTOGRAM_ALPHA;
       channel++)
    {
610 611
      if (default_config)
        {
612
          GimpCurveType curve_type = config->curve[channel]->curve_type;
613

614
          g_object_freeze_notify (G_OBJECT (config->curve[channel]));
615 616

          gimp_config_copy (GIMP_CONFIG (default_config->curve[channel]),
617
                            GIMP_CONFIG (config->curve[channel]),
618 619
                            0);

620
          g_object_set (config->curve[channel],
621 622 623
                        "curve-type", curve_type,
                        NULL);

624
          g_object_thaw_notify (G_OBJECT (config->curve[channel]));
625 626 627
        }
      else
        {
628
          gimp_curve_reset (config->curve[channel], FALSE);
629
        }
630
    }
631 632
}

633
static gboolean
634 635 636
gimp_curves_tool_settings_import (GimpFilterTool  *filter_tool,
                                  GInputStream    *input,
                                  GError         **error)
637
{
638
  GimpCurvesConfig *config = GIMP_CURVES_CONFIG (filter_tool->config);
639 640
  gchar             header[64];
  gsize             bytes_read;
641

642 643 644
  if (! g_input_stream_read_all (input, header, sizeof (header),
                                 &bytes_read, NULL, error) ||
      bytes_read != sizeof (header))
645
    {
646
      g_prefix_error (error, _("Could not read header: "));
647 648 649
      return FALSE;
    }

650
  g_seekable_seek (G_SEEKABLE (input), 0, G_SEEK_SET, NULL, NULL);
651

652
  if (g_str_has_prefix (header, "# GIMP Curves File\n"))
653
    return gimp_curves_config_load_cruft (config, input, error);
654

655 656 657
  return GIMP_FILTER_TOOL_CLASS (parent_class)->settings_import (filter_tool,
                                                                 input,
                                                                 error);
658 659 660
}

static gboolean
661 662 663
gimp_curves_tool_settings_export (GimpFilterTool  *filter_tool,
                                  GOutputStream   *output,
                                  GError         **error)
664
{
665 666
  GimpCurvesTool   *tool   = GIMP_CURVES_TOOL (filter_tool);
  GimpCurvesConfig *config = GIMP_CURVES_CONFIG (filter_tool->config);
667

668
  if (tool->export_old_format)
669
    return gimp_curves_config_save_cruft (config, output, error);
670

671 672 673
  return GIMP_FILTER_TOOL_CLASS (parent_class)->settings_export (filter_tool,
                                                                 output,
                                                                 error);
674 675 676 677 678 679 680 681 682
}

static void
gimp_curves_tool_export_setup (GimpSettingsBox      *settings_box,
                               GtkFileChooserDialog *dialog,
                               gboolean              export,
                               GimpCurvesTool       *tool)
{
  GtkWidget *button;
683

684 685 686 687 688 689 690 691
  if (! export)
    return;

  button = gtk_check_button_new_with_mnemonic (_("Use _old curves file format"));
  gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button),
                                tool->export_old_format);
  gtk_file_chooser_set_extra_widget (GTK_FILE_CHOOSER (dialog), button);
  gtk_widget_show (button);
692

693 694 695
  g_signal_connect (button, "toggled",
                    G_CALLBACK (gimp_toggle_button_update),
                    &tool->export_old_format);
696
}
697

Elliot Lee's avatar
Elliot Lee committed
698
static void
699
gimp_curves_tool_update_channel (GimpCurvesTool *tool)
Elliot Lee's avatar
Elliot Lee committed
700
{
701 702 703
  GimpFilterTool       *filter_tool = GIMP_FILTER_TOOL (tool);
  GimpCurvesConfig     *config      = GIMP_CURVES_CONFIG (filter_tool->config);
  GimpCurve            *curve       = config->curve[config->channel];
704
  GimpHistogramChannel  channel;
705

706 707
  gimp_int_combo_box_set_active (GIMP_INT_COMBO_BOX (tool->channel_menu),
                                 config->channel);
708

709
  switch (config->channel)
710
    {
711 712 713 714 715 716 717
      guchar r[256];
      guchar g[256];
      guchar b[256];

    case GIMP_HISTOGRAM_VALUE:
    case GIMP_HISTOGRAM_ALPHA:
    case GIMP_HISTOGRAM_RGB:
718
    case GIMP_HISTOGRAM_LUMINANCE:
719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746
      gimp_curve_get_uchar (curve, sizeof (r), r);

      gimp_color_bar_set_buffers (GIMP_COLOR_BAR (tool->xrange),
                                  r, r, r);
      break;

    case GIMP_HISTOGRAM_RED:
    case GIMP_HISTOGRAM_GREEN:
    case GIMP_HISTOGRAM_BLUE:
      gimp_curve_get_uchar (config->curve[GIMP_HISTOGRAM_RED],
                            sizeof (r), r);
      gimp_curve_get_uchar (config->curve[GIMP_HISTOGRAM_GREEN],
                            sizeof (g), g);
      gimp_curve_get_uchar (config->curve[GIMP_HISTOGRAM_BLUE],
                            sizeof (b), b);

      gimp_color_bar_set_buffers (GIMP_COLOR_BAR (tool->xrange),
                                  r, g, b);
      break;
    }

  gimp_histogram_view_set_channel (GIMP_HISTOGRAM_VIEW (tool->graph),
                                   config->channel);
  gimp_curve_view_set_xpos (GIMP_CURVE_VIEW (tool->graph),
                            tool->picked_color[config->channel]);

  gimp_color_bar_set_channel (GIMP_COLOR_BAR (tool->yrange),
                              config->channel);
747

748
  gimp_curve_view_remove_all_backgrounds (GIMP_CURVE_VIEW (tool->graph));
749

750 751 752 753 754
  for (channel = GIMP_HISTOGRAM_VALUE;
       channel <= GIMP_HISTOGRAM_ALPHA;
       channel++)
    {
      if (channel == config->channel)
755
        {
756 757
          gimp_curve_view_set_curve (GIMP_CURVE_VIEW (tool->graph), curve,
                                     curves_get_channel_color (channel));
758
        }
759 760 761 762 763 764 765
      else
        {
          gimp_curve_view_add_background (GIMP_CURVE_VIEW (tool->graph),
                                          config->curve[channel],
                                          curves_get_channel_color (channel));
        }
    }
766

767 768 769
  gimp_int_combo_box_set_active (GIMP_INT_COMBO_BOX (tool->curve_type),
                                 curve->curve_type);
}
Elliot Lee's avatar
Elliot Lee committed
770

771 772 773 774 775 776 777
static void
gimp_curves_tool_config_notify (GObject        *object,
                                GParamSpec     *pspec,
                                GimpCurvesTool *tool)
{
  GimpCurvesConfig *config = GIMP_CURVES_CONFIG (object);
  GimpCurve        *curve  = config->curve[config->channel];
778

779 780
  if (! tool->xrange)
    return;
781

782 783 784
  if (! strcmp (pspec->name, "channel"))
    {
      gimp_curves_tool_update_channel (GIMP_CURVES_TOOL (tool));
785 786 787
    }
  else if (! strcmp (pspec->name, "curve"))
    {
788 789
      gimp_int_combo_box_set_active (GIMP_INT_COMBO_BOX (tool->curve_type),
                                     curve->curve_type);
790 791
    }
}
792

793 794 795 796
static void
curves_channel_callback (GtkWidget      *widget,
                         GimpCurvesTool *tool)
{
797 798
  GimpFilterTool   *filter_tool = GIMP_FILTER_TOOL (tool);
  GimpCurvesConfig *config      = GIMP_CURVES_CONFIG (filter_tool->config);
799 800 801 802 803 804 805 806
  gint              value;

  if (gimp_int_combo_box_get_active (GIMP_INT_COMBO_BOX (widget), &value) &&
      config->channel != value)
    {
      g_object_set (config,
                    "channel", value,
                    NULL);
807
    }
Elliot Lee's avatar
Elliot Lee committed
808 809 810
}

static void
811
curves_channel_reset_callback (GtkWidget      *widget,
812
                               GimpCurvesTool *tool)
Elliot Lee's avatar
Elliot Lee committed
813
{
814 815
  GimpFilterTool   *filter_tool = GIMP_FILTER_TOOL (tool);
  GimpCurvesConfig *config      = GIMP_CURVES_CONFIG (filter_tool->config);
816 817

  gimp_curve_reset (config->curve[config->channel], FALSE);
Elliot Lee's avatar
Elliot Lee committed
818 819
}

820
static gboolean
821 822
curves_menu_sensitivity (gint      value,
                         gpointer  data)
823
{
824
  GimpDrawable         *drawable = GIMP_FILTER_TOOL (data)->drawable;
825
  GimpHistogramChannel  channel  = value;
Sven Neumann's avatar
Sven Neumann committed
826

827 828 829
  if (!drawable)
    return FALSE;

830 831 832 833
  switch (channel)
    {
    case GIMP_HISTOGRAM_VALUE:
      return TRUE;
834

835 836 837
    case GIMP_HISTOGRAM_RED:
    case GIMP_HISTOGRAM_GREEN:
    case GIMP_HISTOGRAM_BLUE:
838
      return gimp_drawable_is_rgb (drawable);
839

840
    case GIMP_HISTOGRAM_ALPHA:
841
      return gimp_drawable_has_alpha (drawable);
842 843 844

    case GIMP_HISTOGRAM_RGB:
      return FALSE;
845 846 847

    case GIMP_HISTOGRAM_LUMINANCE:
      return FALSE;
848
    }
849