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"
38 static GtkVBoxClass *parent_class = NULL;
41 /* forward declarations: */
42 static void gtk_gamma_curve_class_init (GtkGammaCurveClass *class);
43 static void gtk_gamma_curve_init (GtkGammaCurve *curve);
44 static void gtk_gamma_curve_destroy (GtkObject *object);
46 static void curve_type_changed_callback (GtkWidget *w, gpointer data);
47 static void button_realize_callback (GtkWidget *w);
48 static void button_toggled_callback (GtkWidget *w, gpointer data);
49 static void button_clicked_callback (GtkWidget *w, gpointer data);
61 static char *xpm[][27] =
65 /* width height ncolors chars_per_pixel */
92 /* width height ncolors chars_per_pixel */
95 ". c None", /* transparent */
120 /* width height ncolors chars_per_pixel */
145 /* width height ncolors chars_per_pixel */
178 /* width height ncolors chars_per_pixel */
206 gtk_gamma_curve_get_type (void)
208 static guint gamma_curve_type = 0;
210 if (!gamma_curve_type)
212 GtkTypeInfo gamma_curve_info =
215 sizeof (GtkGammaCurve),
216 sizeof (GtkGammaCurveClass),
217 (GtkClassInitFunc) gtk_gamma_curve_class_init,
218 (GtkObjectInitFunc) gtk_gamma_curve_init,
219 (GtkArgSetFunc) NULL,
220 (GtkArgGetFunc) NULL,
224 gtk_type_unique (gtk_vbox_get_type (), &gamma_curve_info);
226 return gamma_curve_type;
230 gtk_gamma_curve_class_init (GtkGammaCurveClass *class)
232 GtkObjectClass *object_class;
234 parent_class = gtk_type_class (gtk_vbox_get_type ());
236 object_class = (GtkObjectClass *) class;
237 object_class->destroy = gtk_gamma_curve_destroy;
241 gtk_gamma_curve_init (GtkGammaCurve *curve)
248 curve->table = gtk_table_new (1, 2, FALSE);
249 gtk_table_set_col_spacings (GTK_TABLE (curve->table), 3);
250 gtk_container_add (GTK_CONTAINER (curve), curve->table);
252 curve->curve = gtk_curve_new ();
253 gtk_signal_connect (GTK_OBJECT (curve->curve), "curve_type_changed",
254 (GtkSignalFunc) curve_type_changed_callback, curve);
255 gtk_table_attach_defaults (GTK_TABLE (curve->table), curve->curve, 0, 1, 0, 1);
257 vbox = gtk_vbox_new (/* homogeneous */ FALSE, /* spacing */ 3);
258 gtk_table_attach (GTK_TABLE (curve->table), vbox, 1, 2, 0, 1, 0, 0, 0, 0);
260 /* toggle buttons: */
261 for (i = 0; i < 3; ++i)
263 curve->button[i] = gtk_toggle_button_new ();
264 gtk_object_set_data (GTK_OBJECT (curve->button[i]), "_GtkGammaCurveIndex",
265 GINT_TO_POINTER (i));
266 gtk_container_add (GTK_CONTAINER (vbox), curve->button[i]);
267 gtk_signal_connect (GTK_OBJECT (curve->button[i]), "realize",
268 (GtkSignalFunc) button_realize_callback, 0);
269 gtk_signal_connect (GTK_OBJECT (curve->button[i]), "toggled",
270 (GtkSignalFunc) button_toggled_callback, curve);
271 gtk_widget_show (curve->button[i]);
275 for (i = 3; i < 5; ++i)
277 curve->button[i] = gtk_button_new ();
278 gtk_object_set_data (GTK_OBJECT (curve->button[i]), "_GtkGammaCurveIndex",
279 GINT_TO_POINTER (i));
280 gtk_container_add (GTK_CONTAINER (vbox), curve->button[i]);
281 gtk_signal_connect (GTK_OBJECT (curve->button[i]), "realize",
282 (GtkSignalFunc) button_realize_callback, 0);
283 gtk_signal_connect (GTK_OBJECT (curve->button[i]), "clicked",
284 (GtkSignalFunc) button_clicked_callback, curve);
285 gtk_widget_show (curve->button[i]);
288 gtk_widget_show (vbox);
289 gtk_widget_show (curve->table);
290 gtk_widget_show (curve->curve);
294 button_realize_callback (GtkWidget *w)
301 i = GPOINTER_TO_INT (gtk_object_get_data (GTK_OBJECT (w), "_GtkGammaCurveIndex"));
302 pm = gdk_pixmap_create_from_xpm_d (w->window, &mask,
303 &w->style->bg[GTK_STATE_NORMAL], xpm[i]);
305 pixmap = gtk_pixmap_new (pm, mask);
306 gtk_container_add (GTK_CONTAINER (w), pixmap);
307 gtk_widget_show (pixmap);
309 gdk_pixmap_unref (pm);
310 gdk_bitmap_unref (mask); /* a bitmap is really just a special pixmap */
314 button_toggled_callback (GtkWidget *w, gpointer data)
316 GtkGammaCurve *c = data;
320 if (!GTK_TOGGLE_BUTTON (w)->active)
323 active = GPOINTER_TO_INT (gtk_object_get_data (GTK_OBJECT (w), "_GtkGammaCurveIndex"));
325 for (i = 0; i < 3; ++i)
326 if ((i != active) && GTK_TOGGLE_BUTTON (c->button[i])->active)
330 gtk_toggle_button_set_state (GTK_TOGGLE_BUTTON (c->button[i]), FALSE);
334 case 0: type = GTK_CURVE_TYPE_SPLINE; break;
335 case 1: type = GTK_CURVE_TYPE_LINEAR; break;
336 default: type = GTK_CURVE_TYPE_FREE; break;
338 gtk_curve_set_curve_type (GTK_CURVE (c->curve), type);
342 gamma_cancel_callback (GtkWidget *w, gpointer data)
344 GtkGammaCurve *c = data;
346 gtk_widget_destroy (c->gamma_dialog);
351 gamma_ok_callback (GtkWidget *w, gpointer data)
353 GtkGammaCurve *c = data;
357 start = gtk_entry_get_text (GTK_ENTRY (c->gamma_text));
360 v = strtod (start, &end);
361 if (end > start && v > 0.0)
364 gtk_curve_set_gamma (GTK_CURVE (c->curve), c->gamma);
365 gamma_cancel_callback (w, data);
369 button_clicked_callback (GtkWidget *w, gpointer data)
371 GtkGammaCurve *c = data;
374 active = GPOINTER_TO_INT (gtk_object_get_data (GTK_OBJECT (w), "_GtkGammaCurveIndex"));
382 GtkWidget *vbox, *hbox, *label, *button;
385 c->gamma_dialog = gtk_dialog_new ();
386 gtk_window_set_title (GTK_WINDOW (c->gamma_dialog), "Gamma");
387 vbox = GTK_DIALOG (c->gamma_dialog)->vbox;
389 hbox = gtk_hbox_new (/* homogeneous */ FALSE, 0);
390 gtk_box_pack_start (GTK_BOX (vbox), hbox, TRUE, TRUE, 2);
391 gtk_widget_show (hbox);
393 label = gtk_label_new ("Gamma value");
394 gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 2);
395 gtk_widget_show (label);
397 sprintf (buf, "%g", c->gamma);
398 c->gamma_text = gtk_entry_new ();
399 gtk_entry_set_text (GTK_ENTRY (c->gamma_text), buf);
400 gtk_box_pack_start (GTK_BOX (hbox), c->gamma_text, TRUE, TRUE, 2);
401 gtk_widget_show (c->gamma_text);
403 /* fill in action area: */
404 hbox = GTK_DIALOG (c->gamma_dialog)->action_area;
406 button = gtk_button_new_with_label ("OK");
407 GTK_WIDGET_SET_FLAGS (button, GTK_CAN_DEFAULT);
408 gtk_signal_connect (GTK_OBJECT (button), "clicked",
409 (GtkSignalFunc) gamma_ok_callback, c);
410 gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 0);
411 gtk_widget_grab_default (button);
412 gtk_widget_show (button);
414 button = gtk_button_new_with_label ("Cancel");
415 gtk_signal_connect (GTK_OBJECT (button), "clicked",
416 (GtkSignalFunc) gamma_cancel_callback, c);
417 gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 0);
418 gtk_widget_show (button);
420 gtk_widget_show (c->gamma_dialog);
426 gtk_curve_reset (GTK_CURVE (c->curve));
431 curve_type_changed_callback (GtkWidget *w, gpointer data)
433 GtkGammaCurve *c = data;
434 GtkCurveType new_type;
437 new_type = GTK_CURVE (w)->curve_type;
440 case GTK_CURVE_TYPE_SPLINE: active = 0; break;
441 case GTK_CURVE_TYPE_LINEAR: active = 1; break;
442 default: active = 2; break;
444 if (!GTK_TOGGLE_BUTTON (c->button[active])->active)
445 gtk_toggle_button_set_state (GTK_TOGGLE_BUTTON (c->button[active]), TRUE);
449 gtk_gamma_curve_new (void)
451 return gtk_type_new (gtk_gamma_curve_get_type ());
455 gtk_gamma_curve_destroy (GtkObject *object)
459 g_return_if_fail (object != NULL);
460 g_return_if_fail (GTK_IS_GAMMA_CURVE (object));
462 c = GTK_GAMMA_CURVE (object);
465 gtk_widget_destroy (c->gamma_dialog);
467 if (GTK_OBJECT_CLASS (parent_class)->destroy)
468 (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);