1 /* GTK - The GIMP Toolkit
2 * Copyright (C) 1997 David Mosberger
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
21 * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
22 * file for a list of people on the GTK+ Team. See the ChangeLog
23 * files for a list of changes. These files are distributed with
24 * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
33 #include "gtkdialog.h"
34 #include "gtkdrawingarea.h"
40 #include "gtkradiobutton.h"
44 #include "gtkwindow.h"
47 static GtkVBoxClass *parent_class = NULL;
50 /* forward declarations: */
51 static void gtk_gamma_curve_class_init (GtkGammaCurveClass *class);
52 static void gtk_gamma_curve_init (GtkGammaCurve *curve);
53 static void gtk_gamma_curve_destroy (GtkObject *object);
55 static void curve_type_changed_callback (GtkWidget *w, gpointer data);
56 static void button_realize_callback (GtkWidget *w);
57 static void button_toggled_callback (GtkWidget *w, gpointer data);
58 static void button_clicked_callback (GtkWidget *w, gpointer data);
70 static const char *xpm[][27] =
74 /* width height ncolors chars_per_pixel */
101 /* width height ncolors chars_per_pixel */
104 ". c None", /* transparent */
129 /* width height ncolors chars_per_pixel */
154 /* width height ncolors chars_per_pixel */
187 /* width height ncolors chars_per_pixel */
215 gtk_gamma_curve_get_type (void)
217 static GType gamma_curve_type = 0;
219 if (!gamma_curve_type)
221 static const GTypeInfo gamma_curve_info =
223 sizeof (GtkGammaCurveClass),
224 NULL, /* base_init */
225 NULL, /* base_finalize */
226 (GClassInitFunc) gtk_gamma_curve_class_init,
227 NULL, /* class_finalize */
228 NULL, /* class_data */
229 sizeof (GtkGammaCurve),
231 (GInstanceInitFunc) gtk_gamma_curve_init,
234 gamma_curve_type = g_type_register_static (GTK_TYPE_VBOX, "GtkGammaCurve",
235 &gamma_curve_info, 0);
237 return gamma_curve_type;
241 gtk_gamma_curve_class_init (GtkGammaCurveClass *class)
243 GtkObjectClass *object_class;
245 parent_class = g_type_class_peek_parent (class);
247 object_class = (GtkObjectClass *) class;
248 object_class->destroy = gtk_gamma_curve_destroy;
252 gtk_gamma_curve_init (GtkGammaCurve *curve)
259 curve->table = gtk_table_new (1, 2, FALSE);
260 gtk_table_set_col_spacings (GTK_TABLE (curve->table), 3);
261 gtk_container_add (GTK_CONTAINER (curve), curve->table);
263 curve->curve = gtk_curve_new ();
264 g_signal_connect (curve->curve, "curve_type_changed",
265 G_CALLBACK (curve_type_changed_callback), curve);
266 gtk_table_attach_defaults (GTK_TABLE (curve->table), curve->curve, 0, 1, 0, 1);
268 vbox = gtk_vbox_new (/* homogeneous */ FALSE, /* spacing */ 3);
269 gtk_table_attach (GTK_TABLE (curve->table), vbox, 1, 2, 0, 1, 0, 0, 0, 0);
271 /* toggle buttons: */
272 for (i = 0; i < 3; ++i)
274 curve->button[i] = gtk_toggle_button_new ();
275 g_object_set_data (G_OBJECT (curve->button[i]), "_GtkGammaCurveIndex",
276 GINT_TO_POINTER (i));
277 gtk_container_add (GTK_CONTAINER (vbox), curve->button[i]);
278 g_signal_connect (curve->button[i], "realize",
279 G_CALLBACK (button_realize_callback), NULL);
280 g_signal_connect (curve->button[i], "toggled",
281 G_CALLBACK (button_toggled_callback), curve);
282 gtk_widget_show (curve->button[i]);
286 for (i = 3; i < 5; ++i)
288 curve->button[i] = gtk_button_new ();
289 g_object_set_data (G_OBJECT (curve->button[i]), "_GtkGammaCurveIndex",
290 GINT_TO_POINTER (i));
291 gtk_container_add (GTK_CONTAINER (vbox), curve->button[i]);
292 g_signal_connect (curve->button[i], "realize",
293 G_CALLBACK (button_realize_callback), NULL);
294 g_signal_connect (curve->button[i], "clicked",
295 G_CALLBACK (button_clicked_callback), curve);
296 gtk_widget_show (curve->button[i]);
299 gtk_widget_show (vbox);
300 gtk_widget_show (curve->table);
301 gtk_widget_show (curve->curve);
305 button_realize_callback (GtkWidget *w)
312 i = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (w), "_GtkGammaCurveIndex"));
313 pm = gdk_pixmap_create_from_xpm_d (w->window, &mask,
314 &w->style->bg[GTK_STATE_NORMAL], (gchar **)xpm[i]);
316 pixmap = gtk_image_new_from_pixmap (pm, mask);
317 gtk_container_add (GTK_CONTAINER (w), pixmap);
318 gtk_widget_show (pixmap);
321 g_object_unref (mask);
325 button_toggled_callback (GtkWidget *w, gpointer data)
327 GtkGammaCurve *c = data;
331 if (!GTK_TOGGLE_BUTTON (w)->active)
334 active = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (w), "_GtkGammaCurveIndex"));
336 for (i = 0; i < 3; ++i)
337 if ((i != active) && GTK_TOGGLE_BUTTON (c->button[i])->active)
341 gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (c->button[i]), FALSE);
345 case 0: type = GTK_CURVE_TYPE_SPLINE; break;
346 case 1: type = GTK_CURVE_TYPE_LINEAR; break;
347 default: type = GTK_CURVE_TYPE_FREE; break;
349 gtk_curve_set_curve_type (GTK_CURVE (c->curve), type);
353 gamma_cancel_callback (GtkWidget *w, gpointer data)
355 GtkGammaCurve *c = data;
357 gtk_widget_destroy (c->gamma_dialog);
361 gamma_ok_callback (GtkWidget *w, gpointer data)
363 GtkGammaCurve *c = data;
368 start = gtk_entry_get_text (GTK_ENTRY (c->gamma_text));
371 v = strtod (start, &end);
372 if (end > start && v > 0.0)
375 gtk_curve_set_gamma (GTK_CURVE (c->curve), c->gamma);
376 gamma_cancel_callback (w, data);
380 button_clicked_callback (GtkWidget *w, gpointer data)
382 GtkGammaCurve *c = data;
385 active = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (w), "_GtkGammaCurveIndex"));
393 GtkWidget *vbox, *hbox, *label, *button;
396 c->gamma_dialog = gtk_dialog_new ();
397 gtk_window_set_screen (GTK_WINDOW (c->gamma_dialog),
398 gtk_widget_get_screen (w));
399 gtk_window_set_title (GTK_WINDOW (c->gamma_dialog), _("Gamma"));
400 g_object_add_weak_pointer (G_OBJECT (c->gamma_dialog),
401 (gpointer *)&c->gamma_dialog);
403 vbox = GTK_DIALOG (c->gamma_dialog)->vbox;
405 hbox = gtk_hbox_new (/* homogeneous */ FALSE, 0);
406 gtk_box_pack_start (GTK_BOX (vbox), hbox, TRUE, TRUE, 2);
407 gtk_widget_show (hbox);
409 label = gtk_label_new_with_mnemonic (_("_Gamma value"));
410 gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 2);
411 gtk_widget_show (label);
413 sprintf (buf, "%g", c->gamma);
414 c->gamma_text = gtk_entry_new ();
415 gtk_label_set_mnemonic_widget (GTK_LABEL (label), c->gamma_text);
416 gtk_entry_set_text (GTK_ENTRY (c->gamma_text), buf);
417 gtk_box_pack_start (GTK_BOX (hbox), c->gamma_text, TRUE, TRUE, 2);
418 gtk_widget_show (c->gamma_text);
420 /* fill in action area: */
421 hbox = GTK_DIALOG (c->gamma_dialog)->action_area;
423 button = gtk_button_new_from_stock (GTK_STOCK_CANCEL);
424 g_signal_connect (button, "clicked",
425 G_CALLBACK (gamma_cancel_callback), c);
426 gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 0);
427 gtk_widget_show (button);
429 button = gtk_button_new_from_stock (GTK_STOCK_OK);
430 GTK_WIDGET_SET_FLAGS (button, GTK_CAN_DEFAULT);
431 g_signal_connect (button, "clicked",
432 G_CALLBACK (gamma_ok_callback), c);
433 gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 0);
434 gtk_widget_grab_default (button);
435 gtk_widget_show (button);
437 gtk_widget_show (c->gamma_dialog);
443 gtk_curve_reset (GTK_CURVE (c->curve));
448 curve_type_changed_callback (GtkWidget *w, gpointer data)
450 GtkGammaCurve *c = data;
451 GtkCurveType new_type;
454 new_type = GTK_CURVE (w)->curve_type;
457 case GTK_CURVE_TYPE_SPLINE: active = 0; break;
458 case GTK_CURVE_TYPE_LINEAR: active = 1; break;
459 default: active = 2; break;
461 if (!GTK_TOGGLE_BUTTON (c->button[active])->active)
462 gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (c->button[active]), TRUE);
466 gtk_gamma_curve_new (void)
468 return g_object_new (GTK_TYPE_GAMMA_CURVE, NULL);
472 gtk_gamma_curve_destroy (GtkObject *object)
476 g_return_if_fail (GTK_IS_GAMMA_CURVE (object));
478 c = GTK_GAMMA_CURVE (object);
481 gtk_widget_destroy (c->gamma_dialog);
483 if (GTK_OBJECT_CLASS (parent_class)->destroy)
484 (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);