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 Library 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 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library 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.
25 #include "gtkdialog.h"
26 #include "gtkdrawingarea.h"
31 #include "gtkpixmap.h"
32 #include "gtkradiobutton.h"
33 #include "gtksignal.h"
36 #include "gtkwindow.h"
39 static GtkVBoxClass *parent_class = NULL;
42 /* forward declarations: */
43 static void gtk_gamma_curve_class_init (GtkGammaCurveClass *class);
44 static void gtk_gamma_curve_init (GtkGammaCurve *curve);
45 static void gtk_gamma_curve_destroy (GtkObject *object);
47 static void curve_type_changed_callback (GtkWidget *w, gpointer data);
48 static void button_realize_callback (GtkWidget *w);
49 static void button_toggled_callback (GtkWidget *w, gpointer data);
50 static void button_clicked_callback (GtkWidget *w, gpointer data);
62 static const char *xpm[][27] =
66 /* width height ncolors chars_per_pixel */
93 /* width height ncolors chars_per_pixel */
96 ". c None", /* transparent */
121 /* width height ncolors chars_per_pixel */
146 /* width height ncolors chars_per_pixel */
179 /* width height ncolors chars_per_pixel */
207 gtk_gamma_curve_get_type (void)
209 static guint gamma_curve_type = 0;
211 if (!gamma_curve_type)
213 static const GtkTypeInfo gamma_curve_info =
216 sizeof (GtkGammaCurve),
217 sizeof (GtkGammaCurveClass),
218 (GtkClassInitFunc) gtk_gamma_curve_class_init,
219 (GtkObjectInitFunc) gtk_gamma_curve_init,
220 /* reserved_1 */ NULL,
221 /* reserved_2 */ NULL,
222 (GtkClassInitFunc) NULL,
226 gtk_type_unique (gtk_vbox_get_type (), &gamma_curve_info);
228 return gamma_curve_type;
232 gtk_gamma_curve_class_init (GtkGammaCurveClass *class)
234 GtkObjectClass *object_class;
236 parent_class = gtk_type_class (gtk_vbox_get_type ());
238 object_class = (GtkObjectClass *) class;
239 object_class->destroy = gtk_gamma_curve_destroy;
243 gtk_gamma_curve_init (GtkGammaCurve *curve)
250 curve->table = gtk_table_new (1, 2, FALSE);
251 gtk_table_set_col_spacings (GTK_TABLE (curve->table), 3);
252 gtk_container_add (GTK_CONTAINER (curve), curve->table);
254 curve->curve = gtk_curve_new ();
255 gtk_signal_connect (GTK_OBJECT (curve->curve), "curve_type_changed",
256 (GtkSignalFunc) curve_type_changed_callback, curve);
257 gtk_table_attach_defaults (GTK_TABLE (curve->table), curve->curve, 0, 1, 0, 1);
259 vbox = gtk_vbox_new (/* homogeneous */ FALSE, /* spacing */ 3);
260 gtk_table_attach (GTK_TABLE (curve->table), vbox, 1, 2, 0, 1, 0, 0, 0, 0);
262 /* toggle buttons: */
263 for (i = 0; i < 3; ++i)
265 curve->button[i] = gtk_toggle_button_new ();
266 gtk_object_set_data (GTK_OBJECT (curve->button[i]), "_GtkGammaCurveIndex",
267 GINT_TO_POINTER (i));
268 gtk_container_add (GTK_CONTAINER (vbox), curve->button[i]);
269 gtk_signal_connect (GTK_OBJECT (curve->button[i]), "realize",
270 (GtkSignalFunc) button_realize_callback, 0);
271 gtk_signal_connect (GTK_OBJECT (curve->button[i]), "toggled",
272 (GtkSignalFunc) button_toggled_callback, curve);
273 gtk_widget_show (curve->button[i]);
277 for (i = 3; i < 5; ++i)
279 curve->button[i] = gtk_button_new ();
280 gtk_object_set_data (GTK_OBJECT (curve->button[i]), "_GtkGammaCurveIndex",
281 GINT_TO_POINTER (i));
282 gtk_container_add (GTK_CONTAINER (vbox), curve->button[i]);
283 gtk_signal_connect (GTK_OBJECT (curve->button[i]), "realize",
284 (GtkSignalFunc) button_realize_callback, 0);
285 gtk_signal_connect (GTK_OBJECT (curve->button[i]), "clicked",
286 (GtkSignalFunc) button_clicked_callback, curve);
287 gtk_widget_show (curve->button[i]);
290 gtk_widget_show (vbox);
291 gtk_widget_show (curve->table);
292 gtk_widget_show (curve->curve);
296 button_realize_callback (GtkWidget *w)
303 i = GPOINTER_TO_INT (gtk_object_get_data (GTK_OBJECT (w), "_GtkGammaCurveIndex"));
304 pm = gdk_pixmap_create_from_xpm_d (w->window, &mask,
305 &w->style->bg[GTK_STATE_NORMAL], xpm[i]);
307 pixmap = gtk_pixmap_new (pm, mask);
308 gtk_container_add (GTK_CONTAINER (w), pixmap);
309 gtk_widget_show (pixmap);
311 gdk_pixmap_unref (pm);
312 gdk_bitmap_unref (mask); /* a bitmap is really just a special pixmap */
316 button_toggled_callback (GtkWidget *w, gpointer data)
318 GtkGammaCurve *c = data;
322 if (!GTK_TOGGLE_BUTTON (w)->active)
325 active = GPOINTER_TO_INT (gtk_object_get_data (GTK_OBJECT (w), "_GtkGammaCurveIndex"));
327 for (i = 0; i < 3; ++i)
328 if ((i != active) && GTK_TOGGLE_BUTTON (c->button[i])->active)
332 gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (c->button[i]), FALSE);
336 case 0: type = GTK_CURVE_TYPE_SPLINE; break;
337 case 1: type = GTK_CURVE_TYPE_LINEAR; break;
338 default: type = GTK_CURVE_TYPE_FREE; break;
340 gtk_curve_set_curve_type (GTK_CURVE (c->curve), type);
344 gamma_cancel_callback (GtkWidget *w, gpointer data)
346 GtkGammaCurve *c = data;
348 gtk_widget_destroy (c->gamma_dialog);
353 gamma_ok_callback (GtkWidget *w, gpointer data)
355 GtkGammaCurve *c = data;
359 start = gtk_entry_get_text (GTK_ENTRY (c->gamma_text));
362 v = strtod (start, &end);
363 if (end > start && v > 0.0)
366 gtk_curve_set_gamma (GTK_CURVE (c->curve), c->gamma);
367 gamma_cancel_callback (w, data);
371 button_clicked_callback (GtkWidget *w, gpointer data)
373 GtkGammaCurve *c = data;
376 active = GPOINTER_TO_INT (gtk_object_get_data (GTK_OBJECT (w), "_GtkGammaCurveIndex"));
384 GtkWidget *vbox, *hbox, *label, *button;
387 c->gamma_dialog = gtk_dialog_new ();
388 gtk_window_set_title (GTK_WINDOW (c->gamma_dialog), _("Gamma"));
389 vbox = GTK_DIALOG (c->gamma_dialog)->vbox;
391 hbox = gtk_hbox_new (/* homogeneous */ FALSE, 0);
392 gtk_box_pack_start (GTK_BOX (vbox), hbox, TRUE, TRUE, 2);
393 gtk_widget_show (hbox);
395 label = gtk_label_new (_("Gamma value"));
396 gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 2);
397 gtk_widget_show (label);
399 sprintf (buf, "%g", c->gamma);
400 c->gamma_text = gtk_entry_new ();
401 gtk_entry_set_text (GTK_ENTRY (c->gamma_text), buf);
402 gtk_box_pack_start (GTK_BOX (hbox), c->gamma_text, TRUE, TRUE, 2);
403 gtk_widget_show (c->gamma_text);
405 /* fill in action area: */
406 hbox = GTK_DIALOG (c->gamma_dialog)->action_area;
408 button = gtk_button_new_with_label (_("OK"));
409 GTK_WIDGET_SET_FLAGS (button, GTK_CAN_DEFAULT);
410 gtk_signal_connect (GTK_OBJECT (button), "clicked",
411 (GtkSignalFunc) gamma_ok_callback, c);
412 gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 0);
413 gtk_widget_grab_default (button);
414 gtk_widget_show (button);
416 button = gtk_button_new_with_label (_("Cancel"));
417 gtk_signal_connect (GTK_OBJECT (button), "clicked",
418 (GtkSignalFunc) gamma_cancel_callback, c);
419 gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 0);
420 gtk_widget_show (button);
422 gtk_widget_show (c->gamma_dialog);
428 gtk_curve_reset (GTK_CURVE (c->curve));
433 curve_type_changed_callback (GtkWidget *w, gpointer data)
435 GtkGammaCurve *c = data;
436 GtkCurveType new_type;
439 new_type = GTK_CURVE (w)->curve_type;
442 case GTK_CURVE_TYPE_SPLINE: active = 0; break;
443 case GTK_CURVE_TYPE_LINEAR: active = 1; break;
444 default: active = 2; break;
446 if (!GTK_TOGGLE_BUTTON (c->button[active])->active)
447 gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (c->button[active]), TRUE);
451 gtk_gamma_curve_new (void)
453 return gtk_type_new (gtk_gamma_curve_get_type ());
457 gtk_gamma_curve_destroy (GtkObject *object)
461 g_return_if_fail (object != NULL);
462 g_return_if_fail (GTK_IS_GAMMA_CURVE (object));
464 c = GTK_GAMMA_CURVE (object);
467 gtk_widget_destroy (c->gamma_dialog);
469 if (GTK_OBJECT_CLASS (parent_class)->destroy)
470 (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);