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"
39 #include "gtkpixmap.h"
40 #include "gtkradiobutton.h"
41 #include "gtksignal.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 GtkType gamma_curve_type = 0;
219 if (!gamma_curve_type)
221 static const GtkTypeInfo gamma_curve_info =
224 sizeof (GtkGammaCurve),
225 sizeof (GtkGammaCurveClass),
226 (GtkClassInitFunc) gtk_gamma_curve_class_init,
227 (GtkObjectInitFunc) gtk_gamma_curve_init,
228 /* reserved_1 */ NULL,
229 /* reserved_2 */ NULL,
230 (GtkClassInitFunc) NULL,
233 gamma_curve_type = gtk_type_unique (GTK_TYPE_VBOX, &gamma_curve_info);
235 return gamma_curve_type;
239 gtk_gamma_curve_class_init (GtkGammaCurveClass *class)
241 GtkObjectClass *object_class;
243 parent_class = gtk_type_class (GTK_TYPE_VBOX);
245 object_class = (GtkObjectClass *) class;
246 object_class->destroy = gtk_gamma_curve_destroy;
250 gtk_gamma_curve_init (GtkGammaCurve *curve)
257 curve->table = gtk_table_new (1, 2, FALSE);
258 gtk_table_set_col_spacings (GTK_TABLE (curve->table), 3);
259 gtk_container_add (GTK_CONTAINER (curve), curve->table);
261 curve->curve = gtk_curve_new ();
262 gtk_signal_connect (GTK_OBJECT (curve->curve), "curve_type_changed",
263 (GtkSignalFunc) curve_type_changed_callback, curve);
264 gtk_table_attach_defaults (GTK_TABLE (curve->table), curve->curve, 0, 1, 0, 1);
266 vbox = gtk_vbox_new (/* homogeneous */ FALSE, /* spacing */ 3);
267 gtk_table_attach (GTK_TABLE (curve->table), vbox, 1, 2, 0, 1, 0, 0, 0, 0);
269 /* toggle buttons: */
270 for (i = 0; i < 3; ++i)
272 curve->button[i] = gtk_toggle_button_new ();
273 gtk_object_set_data (GTK_OBJECT (curve->button[i]), "_GtkGammaCurveIndex",
274 GINT_TO_POINTER (i));
275 gtk_container_add (GTK_CONTAINER (vbox), curve->button[i]);
276 gtk_signal_connect (GTK_OBJECT (curve->button[i]), "realize",
277 (GtkSignalFunc) button_realize_callback, 0);
278 gtk_signal_connect (GTK_OBJECT (curve->button[i]), "toggled",
279 (GtkSignalFunc) button_toggled_callback, curve);
280 gtk_widget_show (curve->button[i]);
284 for (i = 3; i < 5; ++i)
286 curve->button[i] = gtk_button_new ();
287 gtk_object_set_data (GTK_OBJECT (curve->button[i]), "_GtkGammaCurveIndex",
288 GINT_TO_POINTER (i));
289 gtk_container_add (GTK_CONTAINER (vbox), curve->button[i]);
290 gtk_signal_connect (GTK_OBJECT (curve->button[i]), "realize",
291 (GtkSignalFunc) button_realize_callback, 0);
292 gtk_signal_connect (GTK_OBJECT (curve->button[i]), "clicked",
293 (GtkSignalFunc) button_clicked_callback, curve);
294 gtk_widget_show (curve->button[i]);
297 gtk_widget_show (vbox);
298 gtk_widget_show (curve->table);
299 gtk_widget_show (curve->curve);
303 button_realize_callback (GtkWidget *w)
310 i = GPOINTER_TO_INT (gtk_object_get_data (GTK_OBJECT (w), "_GtkGammaCurveIndex"));
311 pm = gdk_pixmap_create_from_xpm_d (w->window, &mask,
312 &w->style->bg[GTK_STATE_NORMAL], (gchar **)xpm[i]);
314 pixmap = gtk_pixmap_new (pm, mask);
315 gtk_container_add (GTK_CONTAINER (w), pixmap);
316 gtk_widget_show (pixmap);
318 gdk_pixmap_unref (pm);
319 gdk_bitmap_unref (mask); /* a bitmap is really just a special pixmap */
323 button_toggled_callback (GtkWidget *w, gpointer data)
325 GtkGammaCurve *c = data;
329 if (!GTK_TOGGLE_BUTTON (w)->active)
332 active = GPOINTER_TO_INT (gtk_object_get_data (GTK_OBJECT (w), "_GtkGammaCurveIndex"));
334 for (i = 0; i < 3; ++i)
335 if ((i != active) && GTK_TOGGLE_BUTTON (c->button[i])->active)
339 gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (c->button[i]), FALSE);
343 case 0: type = GTK_CURVE_TYPE_SPLINE; break;
344 case 1: type = GTK_CURVE_TYPE_LINEAR; break;
345 default: type = GTK_CURVE_TYPE_FREE; break;
347 gtk_curve_set_curve_type (GTK_CURVE (c->curve), type);
351 gamma_cancel_callback (GtkWidget *w, gpointer data)
353 GtkGammaCurve *c = data;
355 gtk_widget_destroy (c->gamma_dialog);
360 gamma_ok_callback (GtkWidget *w, gpointer data)
362 GtkGammaCurve *c = data;
367 start = gtk_entry_get_text (GTK_ENTRY (c->gamma_text));
370 v = strtod (start, &end);
371 if (end > start && v > 0.0)
374 gtk_curve_set_gamma (GTK_CURVE (c->curve), c->gamma);
375 gamma_cancel_callback (w, data);
379 button_clicked_callback (GtkWidget *w, gpointer data)
381 GtkGammaCurve *c = data;
384 active = GPOINTER_TO_INT (gtk_object_get_data (GTK_OBJECT (w), "_GtkGammaCurveIndex"));
392 GtkWidget *vbox, *hbox, *label, *button;
395 c->gamma_dialog = gtk_dialog_new ();
396 gtk_window_set_title (GTK_WINDOW (c->gamma_dialog), _("Gamma"));
397 vbox = GTK_DIALOG (c->gamma_dialog)->vbox;
399 hbox = gtk_hbox_new (/* homogeneous */ FALSE, 0);
400 gtk_box_pack_start (GTK_BOX (vbox), hbox, TRUE, TRUE, 2);
401 gtk_widget_show (hbox);
403 label = gtk_label_new (_("_Gamma value"));
404 gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 2);
405 gtk_widget_show (label);
407 sprintf (buf, "%g", c->gamma);
408 c->gamma_text = gtk_entry_new ();
409 gtk_label_set_mnemonic_widget (GTK_LABEL (label), c->gamma_text);
410 gtk_entry_set_text (GTK_ENTRY (c->gamma_text), buf);
411 gtk_box_pack_start (GTK_BOX (hbox), c->gamma_text, TRUE, TRUE, 2);
412 gtk_widget_show (c->gamma_text);
414 /* fill in action area: */
415 hbox = GTK_DIALOG (c->gamma_dialog)->action_area;
417 button = gtk_button_new_with_label (_("Cancel"));
418 gtk_signal_connect (GTK_OBJECT (button), "clicked",
419 (GtkSignalFunc) gamma_cancel_callback, c);
420 gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 0);
421 gtk_widget_show (button);
423 button = gtk_button_new_with_label (_("OK"));
424 GTK_WIDGET_SET_FLAGS (button, GTK_CAN_DEFAULT);
425 gtk_signal_connect (GTK_OBJECT (button), "clicked",
426 (GtkSignalFunc) gamma_ok_callback, c);
427 gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 0);
428 gtk_widget_grab_default (button);
429 gtk_widget_show (button);
431 gtk_widget_show (c->gamma_dialog);
437 gtk_curve_reset (GTK_CURVE (c->curve));
442 curve_type_changed_callback (GtkWidget *w, gpointer data)
444 GtkGammaCurve *c = data;
445 GtkCurveType new_type;
448 new_type = GTK_CURVE (w)->curve_type;
451 case GTK_CURVE_TYPE_SPLINE: active = 0; break;
452 case GTK_CURVE_TYPE_LINEAR: active = 1; break;
453 default: active = 2; break;
455 if (!GTK_TOGGLE_BUTTON (c->button[active])->active)
456 gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (c->button[active]), TRUE);
460 gtk_gamma_curve_new (void)
462 return gtk_type_new (GTK_TYPE_GAMMA_CURVE);
466 gtk_gamma_curve_destroy (GtkObject *object)
470 g_return_if_fail (GTK_IS_GAMMA_CURVE (object));
472 c = GTK_GAMMA_CURVE (object);
475 gtk_widget_destroy (c->gamma_dialog);
477 if (GTK_OBJECT_CLASS (parent_class)->destroy)
478 (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);