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/.
34 #include "gtkdialog.h"
35 #include "gtkdrawingarea.h"
41 #include "gtkradiobutton.h"
45 #include "gtkwindow.h"
49 static GtkVBoxClass *parent_class = NULL;
52 /* forward declarations: */
53 static void gtk_gamma_curve_class_init (GtkGammaCurveClass *class);
54 static void gtk_gamma_curve_init (GtkGammaCurve *curve);
55 static void gtk_gamma_curve_destroy (GtkObject *object);
57 static void curve_type_changed_callback (GtkWidget *w, gpointer data);
58 static void button_realize_callback (GtkWidget *w);
59 static void button_toggled_callback (GtkWidget *w, gpointer data);
60 static void button_clicked_callback (GtkWidget *w, gpointer data);
72 static const char *const xpm[][27] =
76 /* width height ncolors chars_per_pixel */
103 /* width height ncolors chars_per_pixel */
106 ". c None", /* transparent */
131 /* width height ncolors chars_per_pixel */
156 /* width height ncolors chars_per_pixel */
189 /* width height ncolors chars_per_pixel */
217 gtk_gamma_curve_get_type (void)
219 static GType gamma_curve_type = 0;
221 if (!gamma_curve_type)
223 static const GTypeInfo gamma_curve_info =
225 sizeof (GtkGammaCurveClass),
226 NULL, /* base_init */
227 NULL, /* base_finalize */
228 (GClassInitFunc) gtk_gamma_curve_class_init,
229 NULL, /* class_finalize */
230 NULL, /* class_data */
231 sizeof (GtkGammaCurve),
233 (GInstanceInitFunc) gtk_gamma_curve_init,
236 gamma_curve_type = g_type_register_static (GTK_TYPE_VBOX, I_("GtkGammaCurve"),
237 &gamma_curve_info, 0);
239 return gamma_curve_type;
243 gtk_gamma_curve_class_init (GtkGammaCurveClass *class)
245 GtkObjectClass *object_class;
247 parent_class = g_type_class_peek_parent (class);
249 object_class = (GtkObjectClass *) class;
250 object_class->destroy = gtk_gamma_curve_destroy;
254 gtk_gamma_curve_init (GtkGammaCurve *curve)
261 curve->table = gtk_table_new (1, 2, FALSE);
262 gtk_table_set_col_spacings (GTK_TABLE (curve->table), 3);
263 gtk_container_add (GTK_CONTAINER (curve), curve->table);
265 curve->curve = gtk_curve_new ();
266 g_signal_connect (curve->curve, "curve_type_changed",
267 G_CALLBACK (curve_type_changed_callback), curve);
268 gtk_table_attach_defaults (GTK_TABLE (curve->table), curve->curve, 0, 1, 0, 1);
270 vbox = gtk_vbox_new (/* homogeneous */ FALSE, /* spacing */ 3);
271 gtk_table_attach (GTK_TABLE (curve->table), vbox, 1, 2, 0, 1, 0, 0, 0, 0);
273 /* toggle buttons: */
274 for (i = 0; i < 3; ++i)
276 curve->button[i] = gtk_toggle_button_new ();
277 g_object_set_data (G_OBJECT (curve->button[i]), I_("_GtkGammaCurveIndex"),
278 GINT_TO_POINTER (i));
279 gtk_container_add (GTK_CONTAINER (vbox), curve->button[i]);
280 g_signal_connect (curve->button[i], "realize",
281 G_CALLBACK (button_realize_callback), NULL);
282 g_signal_connect (curve->button[i], "toggled",
283 G_CALLBACK (button_toggled_callback), curve);
284 gtk_widget_show (curve->button[i]);
288 for (i = 3; i < 5; ++i)
290 curve->button[i] = gtk_button_new ();
291 g_object_set_data (G_OBJECT (curve->button[i]), I_("_GtkGammaCurveIndex"),
292 GINT_TO_POINTER (i));
293 gtk_container_add (GTK_CONTAINER (vbox), curve->button[i]);
294 g_signal_connect (curve->button[i], "realize",
295 G_CALLBACK (button_realize_callback), NULL);
296 g_signal_connect (curve->button[i], "clicked",
297 G_CALLBACK (button_clicked_callback), curve);
298 gtk_widget_show (curve->button[i]);
301 gtk_widget_show (vbox);
302 gtk_widget_show (curve->table);
303 gtk_widget_show (curve->curve);
307 button_realize_callback (GtkWidget *w)
314 i = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (w), "_GtkGammaCurveIndex"));
315 pm = gdk_pixmap_create_from_xpm_d (w->window, &mask,
316 &w->style->bg[GTK_STATE_NORMAL], (gchar **)xpm[i]);
318 pixmap = gtk_image_new_from_pixmap (pm, mask);
319 gtk_container_add (GTK_CONTAINER (w), pixmap);
320 gtk_widget_show (pixmap);
323 g_object_unref (mask);
327 button_toggled_callback (GtkWidget *w, gpointer data)
329 GtkGammaCurve *c = data;
333 if (!GTK_TOGGLE_BUTTON (w)->active)
336 active = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (w), "_GtkGammaCurveIndex"));
338 for (i = 0; i < 3; ++i)
339 if ((i != active) && GTK_TOGGLE_BUTTON (c->button[i])->active)
343 gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (c->button[i]), FALSE);
347 case 0: type = GTK_CURVE_TYPE_SPLINE; break;
348 case 1: type = GTK_CURVE_TYPE_LINEAR; break;
349 default: type = GTK_CURVE_TYPE_FREE; break;
351 gtk_curve_set_curve_type (GTK_CURVE (c->curve), type);
355 gamma_cancel_callback (GtkWidget *w, gpointer data)
357 GtkGammaCurve *c = data;
359 gtk_widget_destroy (c->gamma_dialog);
363 gamma_ok_callback (GtkWidget *w, gpointer data)
365 GtkGammaCurve *c = data;
370 start = gtk_entry_get_text (GTK_ENTRY (c->gamma_text));
373 v = g_strtod (start, &end);
374 if (end > start && v > 0.0)
377 gtk_curve_set_gamma (GTK_CURVE (c->curve), c->gamma);
378 gamma_cancel_callback (w, data);
382 button_clicked_callback (GtkWidget *w, gpointer data)
384 GtkGammaCurve *c = data;
387 active = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (w), "_GtkGammaCurveIndex"));
395 GtkWidget *vbox, *hbox, *label, *button;
398 c->gamma_dialog = gtk_dialog_new ();
399 gtk_window_set_screen (GTK_WINDOW (c->gamma_dialog),
400 gtk_widget_get_screen (w));
401 gtk_window_set_title (GTK_WINDOW (c->gamma_dialog), _("Gamma"));
402 g_object_add_weak_pointer (G_OBJECT (c->gamma_dialog),
403 (gpointer *)&c->gamma_dialog);
405 vbox = GTK_DIALOG (c->gamma_dialog)->vbox;
407 hbox = gtk_hbox_new (/* homogeneous */ FALSE, 0);
408 gtk_box_pack_start (GTK_BOX (vbox), hbox, TRUE, TRUE, 2);
409 gtk_widget_show (hbox);
411 label = gtk_label_new_with_mnemonic (_("_Gamma value"));
412 gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 2);
413 gtk_widget_show (label);
415 sprintf (buf, "%g", c->gamma);
416 c->gamma_text = gtk_entry_new ();
417 gtk_label_set_mnemonic_widget (GTK_LABEL (label), c->gamma_text);
418 gtk_entry_set_text (GTK_ENTRY (c->gamma_text), buf);
419 gtk_box_pack_start (GTK_BOX (hbox), c->gamma_text, TRUE, TRUE, 2);
420 gtk_widget_show (c->gamma_text);
422 /* fill in action area: */
423 hbox = GTK_DIALOG (c->gamma_dialog)->action_area;
425 button = gtk_button_new_from_stock (GTK_STOCK_CANCEL);
426 g_signal_connect (button, "clicked",
427 G_CALLBACK (gamma_cancel_callback), c);
428 gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 0);
429 gtk_widget_show (button);
431 button = gtk_button_new_from_stock (GTK_STOCK_OK);
432 GTK_WIDGET_SET_FLAGS (button, GTK_CAN_DEFAULT);
433 g_signal_connect (button, "clicked",
434 G_CALLBACK (gamma_ok_callback), c);
435 gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 0);
436 gtk_widget_grab_default (button);
437 gtk_widget_show (button);
439 gtk_widget_show (c->gamma_dialog);
445 gtk_curve_reset (GTK_CURVE (c->curve));
450 curve_type_changed_callback (GtkWidget *w, gpointer data)
452 GtkGammaCurve *c = data;
453 GtkCurveType new_type;
456 new_type = GTK_CURVE (w)->curve_type;
459 case GTK_CURVE_TYPE_SPLINE: active = 0; break;
460 case GTK_CURVE_TYPE_LINEAR: active = 1; break;
461 default: active = 2; break;
463 if (!GTK_TOGGLE_BUTTON (c->button[active])->active)
464 gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (c->button[active]), TRUE);
468 gtk_gamma_curve_new (void)
470 return g_object_new (GTK_TYPE_GAMMA_CURVE, NULL);
474 gtk_gamma_curve_destroy (GtkObject *object)
478 g_return_if_fail (GTK_IS_GAMMA_CURVE (object));
480 c = GTK_GAMMA_CURVE (object);
483 gtk_widget_destroy (c->gamma_dialog);
485 if (GTK_OBJECT_CLASS (parent_class)->destroy)
486 (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
489 #define __GTK_GAMMA_CURVE_C__
490 #include "gtkaliasdef.c"