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 Free
16 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 #include "gtkdialog.h"
25 #include "gtkdrawingarea.h"
30 #include "gtkpixmap.h"
31 #include "gtkradiobutton.h"
32 #include "gtksignal.h"
35 #include "gtkwindow.h"
37 static GtkVBoxClass *parent_class = NULL;
40 /* forward declarations: */
41 static void gtk_gamma_curve_class_init (GtkGammaCurveClass *class);
42 static void gtk_gamma_curve_init (GtkGammaCurve *curve);
43 static void gtk_gamma_curve_destroy (GtkObject *object);
55 static char *xpm[][27] =
59 /* width height ncolors chars_per_pixel */
86 /* width height ncolors chars_per_pixel */
89 ". c None", /* transparent */
114 /* width height ncolors chars_per_pixel */
139 /* width height ncolors chars_per_pixel */
172 /* width height ncolors chars_per_pixel */
200 gtk_gamma_curve_get_type (void)
202 static guint gamma_curve_type = 0;
204 if (!gamma_curve_type)
206 GtkTypeInfo gamma_curve_info =
209 sizeof (GtkGammaCurve),
210 sizeof (GtkGammaCurveClass),
211 (GtkClassInitFunc) gtk_gamma_curve_class_init,
212 (GtkObjectInitFunc) gtk_gamma_curve_init,
217 gtk_type_unique (gtk_vbox_get_type (), &gamma_curve_info);
219 return gamma_curve_type;
223 gtk_gamma_curve_class_init (GtkGammaCurveClass *class)
225 GtkObjectClass *object_class;
227 parent_class = gtk_type_class (gtk_vbox_get_type ());
229 object_class = (GtkObjectClass *) class;
230 object_class->destroy = gtk_gamma_curve_destroy;
234 gtk_gamma_curve_init (GtkGammaCurve *curve)
240 button_realize_callback (GtkWidget *w)
247 i = (long) gtk_object_get_data (GTK_OBJECT (w), "_GtkGammaCurveIndex");
248 pm = gdk_pixmap_create_from_xpm_d (w->window, &mask,
249 &w->style->bg[GTK_STATE_NORMAL], xpm[i]);
251 pixmap = gtk_pixmap_new (pm, mask);
252 gtk_container_add (GTK_CONTAINER (w), pixmap);
253 gtk_widget_show (pixmap);
255 gdk_pixmap_unref (pm);
256 gdk_bitmap_unref (mask); /* a bitmap is really just a special pixmap */
260 button_toggled_callback (GtkWidget *w, gpointer data)
262 GtkGammaCurve *c = data;
266 if (!GTK_TOGGLE_BUTTON (w)->active)
269 active = (long) gtk_object_get_data (GTK_OBJECT (w), "_GtkGammaCurveIndex");
271 for (i = 0; i < 3; ++i)
272 if ((i != active) && GTK_TOGGLE_BUTTON (c->button[i])->active)
276 gtk_toggle_button_set_state (GTK_TOGGLE_BUTTON (c->button[i]), FALSE);
280 case 0: type = GTK_CURVE_TYPE_SPLINE; break;
281 case 1: type = GTK_CURVE_TYPE_LINEAR; break;
282 default: type = GTK_CURVE_TYPE_FREE; break;
284 gtk_curve_set_curve_type (GTK_CURVE (c->curve), type);
288 gamma_cancel_callback (GtkWidget *w, gpointer data)
290 GtkGammaCurve *c = data;
292 gtk_widget_destroy (c->gamma_dialog);
297 gamma_ok_callback (GtkWidget *w, gpointer data)
299 GtkGammaCurve *c = data;
303 start = gtk_entry_get_text (GTK_ENTRY (c->gamma_text));
306 v = strtod (start, &end);
307 if (end > start && v > 0.0)
310 gtk_curve_set_gamma (GTK_CURVE (c->curve), c->gamma);
311 gamma_cancel_callback (w, data);
315 button_clicked_callback (GtkWidget *w, gpointer data)
317 GtkGammaCurve *c = data;
320 active = (long) gtk_object_get_data (GTK_OBJECT (w), "_GtkGammaCurveIndex");
327 GtkWidget *vbox, *hbox, *label, *button;
330 c->gamma_dialog = gtk_dialog_new ();
331 gtk_window_set_title (GTK_WINDOW (c->gamma_dialog), "Gamma");
332 vbox = GTK_DIALOG (c->gamma_dialog)->vbox;
334 hbox = gtk_hbox_new (/* homogeneous */ FALSE, 0);
335 gtk_box_pack_start (GTK_BOX (vbox), hbox, TRUE, TRUE, 2);
336 gtk_widget_show (hbox);
338 label = gtk_label_new ("Gamma value");
339 gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 2);
340 gtk_widget_show (label);
342 sprintf (buf, "%g", c->gamma);
343 c->gamma_text = gtk_entry_new ();
344 gtk_entry_set_text (GTK_ENTRY (c->gamma_text), buf);
345 gtk_box_pack_start (GTK_BOX (hbox), c->gamma_text, TRUE, TRUE, 2);
346 gtk_widget_show (c->gamma_text);
348 /* fill in action area: */
349 hbox = GTK_DIALOG (c->gamma_dialog)->action_area;
351 button = gtk_button_new_with_label ("OK");
352 GTK_WIDGET_SET_FLAGS (button, GTK_CAN_DEFAULT);
353 gtk_signal_connect (GTK_OBJECT (button), "clicked",
354 (GtkSignalFunc) gamma_ok_callback, c);
355 gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 0);
356 gtk_widget_grab_default (button);
357 gtk_widget_show (button);
359 button = gtk_button_new_with_label ("Cancel");
360 gtk_signal_connect (GTK_OBJECT (button), "clicked",
361 (GtkSignalFunc) gamma_cancel_callback, c);
362 gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 0);
363 gtk_widget_show (button);
365 gtk_widget_show (c->gamma_dialog);
369 gtk_curve_reset (GTK_CURVE (c->curve));
373 curve_type_changed_callback (GtkWidget *w, gpointer data)
375 GtkGammaCurve *c = data;
376 GtkCurveType new_type;
379 new_type = GTK_CURVE (w)->curve_type;
382 case GTK_CURVE_TYPE_SPLINE: active = 0; break;
383 case GTK_CURVE_TYPE_LINEAR: active = 1; break;
384 default: active = 2; break;
386 if (!GTK_TOGGLE_BUTTON (c->button[active])->active)
387 gtk_toggle_button_set_state (GTK_TOGGLE_BUTTON (c->button[active]), TRUE);
391 gtk_gamma_curve_new (void)
397 c = gtk_type_new (gtk_gamma_curve_get_type ());
399 c->table = gtk_table_new (1, 2, FALSE);
400 gtk_table_set_col_spacings (GTK_TABLE (c->table), 3);
401 gtk_container_add (GTK_CONTAINER (c), c->table);
403 c->curve = gtk_curve_new ();
404 gtk_signal_connect (GTK_OBJECT (c->curve), "curve_type_changed",
405 (GtkSignalFunc) curve_type_changed_callback, c);
406 gtk_table_attach_defaults (GTK_TABLE (c->table), c->curve, 0, 1, 0, 1);
408 vbox = gtk_vbox_new (/* homogeneous */ FALSE, /* spacing */ 3);
409 gtk_table_attach (GTK_TABLE (c->table), vbox, 1, 2, 0, 1, 0, 0, 0, 0);
411 /* toggle buttons: */
412 for (i = 0; i < 3; ++i)
414 c->button[i] = gtk_toggle_button_new ();
415 gtk_object_set_data (GTK_OBJECT (c->button[i]), "_GtkGammaCurveIndex",
416 (gpointer) (long) i);
417 gtk_container_add (GTK_CONTAINER (vbox), c->button[i]);
418 gtk_signal_connect (GTK_OBJECT (c->button[i]), "realize",
419 (GtkSignalFunc) button_realize_callback, 0);
420 gtk_signal_connect (GTK_OBJECT (c->button[i]), "toggled",
421 (GtkSignalFunc) button_toggled_callback, c);
422 gtk_widget_show (c->button[i]);
426 for (i = 3; i < 5; ++i)
428 c->button[i] = gtk_button_new ();
429 gtk_object_set_data (GTK_OBJECT (c->button[i]), "_GtkGammaCurveIndex",
430 (gpointer) (long) i);
431 gtk_container_add (GTK_CONTAINER (vbox), c->button[i]);
432 gtk_signal_connect (GTK_OBJECT (c->button[i]), "realize",
433 (GtkSignalFunc) button_realize_callback, 0);
434 gtk_signal_connect (GTK_OBJECT (c->button[i]), "clicked",
435 (GtkSignalFunc) button_clicked_callback, c);
436 gtk_widget_show (c->button[i]);
439 gtk_widget_show (vbox);
440 gtk_widget_show (c->table);
441 gtk_widget_show (c->curve);
443 return GTK_WIDGET (c);
447 gtk_gamma_curve_destroy (GtkObject *object)
451 g_return_if_fail (object != NULL);
452 g_return_if_fail (GTK_IS_GAMMA_CURVE (object));
454 c = GTK_GAMMA_CURVE (object);
458 gtk_widget_destroy (c->gamma_dialog);
462 if (GTK_OBJECT_CLASS (parent_class)->destroy)
463 (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);