/* GTK - The GIMP Toolkit

 * Copyright (C) 1997 David Mosberger

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 2 of the License, or (at your option) any later version.

 *

 * This library is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with this library; if not, write to the

 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,

 * Boston, MA 02111-1307, USA.

 */

/*

 * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS

 * file for a list of people on the GTK+ Team.  See the ChangeLog

 * files for a list of changes.  These files are distributed with

 * GTK+ at ftp://ftp.gtk.org/pub/gtk/. 

 */

#undef GTK_DISABLE_DEPRECATED

#include "config.h"

#include <string.h>

#include <stdlib.h>

#include <stdio.h>

#undef GDK_PIXBUF_DISABLE_DEPRECATED

#include <gdk-pixbuf/gdk-pixdata.h>

#include "gtkgamma.h"

#include "gtkcurve.h"

#include "gtkdialog.h"

#include "gtkdrawingarea.h"

#include "gtkentry.h"

#include "gtkhbox.h"

#include "gtkimage.h"

#include "gtklabel.h"

#include "gtkmain.h"

#include "gtkradiobutton.h"

#include "gtkstock.h"

#include "gtktable.h"

#include "gtkvbox.h"

#include "gtkwindow.h"

#include "gtkintl.h"

#include "gtkalias.h"

/* forward declarations: */

static void gtk_gamma_curve_destroy (GtkObject *object);

static void curve_type_changed_callback (GtkWidget *w, gpointer data);

static void button_realize_callback     (GtkWidget *w);

static void button_toggled_callback     (GtkWidget *w, gpointer data);

static void button_clicked_callback     (GtkWidget *w, gpointer data);

enum

  {

    LINEAR = 0,

    SPLINE,

    FREE,

    GAMMA,

    RESET,

    NUM_XPMS

  };

/* GdkPixbuf RGBA C-Source image dump 1-byte-run-length-encoded */

#ifdef __SUNPRO_C

#pragma align 4 (spline_pixdata)

#endif

#ifdef __GNUC__

static const guint8 spline_pixdata[] __attribute__ ((__aligned__ (4))) = 

#else

static const guint8 spline_pixdata[] = 

#endif

{ ""

  /* Pixbuf magic (0x47646b50) */

  "GdkP"

  /* length: header (24) + pixel_data (182) */

  "\0\0\0\316"

  /* pixdata_type (0x2010002) */

  "\2\1\0\2"

  /* rowstride (64) */

  "\0\0\0@"

  /* width (16) */

  "\0\0\0\20"

  /* height (16) */

  "\0\0\0\20"

  /* pixel_data: */

  "\216\0\0\0\0\202\0\0\0\377\211\0\0\0\0\206\377\0\0\377\1\0\0\0\377\207"

  "\0\0\0\0\202\377\0\0\377\214\0\0\0\0\2\0\0\0\377\274--\377\215\0\0\0"

  "\0\203\0\0\0\377\215\0\0\0\0\2\274--\377\0\0\0\377\216\0\0\0\0\1\377"

  "\0\0\377\216\0\0\0\0\1\377\0\0\377\217\0\0\0\0\1\377\0\0\377\216\0\0"

  "\0\0\1\377\0\0\377\217\0\0\0\0\1\377\0\0\377\216\0\0\0\0\1\377\0\0\377"

  "\217\0\0\0\0\1\377\0\0\377\217\0\0\0\0\1\377\0\0\377\216\0\0\0\0\2\0"

  "\0\0\377\274--\377\216\0\0\0\0\202\0\0\0\377\216\0\0\0\0"};

/* GdkPixbuf RGBA C-Source image dump 1-byte-run-length-encoded */

#ifdef __SUNPRO_C

#pragma align 4 (linear_pixdata)

#endif

#ifdef __GNUC__

static const guint8 linear_pixdata[] __attribute__ ((__aligned__ (4))) = 

#else

static const guint8 linear_pixdata[] = 

#endif

{ ""

  /* Pixbuf magic (0x47646b50) */

  "GdkP"

  /* length: header (24) + pixel_data (323) */

  "\0\0\1["

  /* pixdata_type (0x2010002) */

  "\2\1\0\2"

  /* rowstride (64) */

  "\0\0\0@"

  /* width (16) */

  "\0\0\0\20"

  /* height (16) */

  "\0\0\0\20"

  /* pixel_data: */

  "\216\0\0\0\0\202\0\0\0\377\216\0\0\0\0\2\202AA\377\0\0\0\377\216\0\0"

  "\0\0\1\377\0\0\377\216\0\0\0\0\1\377\0\0\377\217\0\0\0\0\1\377\0\0\377"

  "\206\0\0\0\0\3\177\177\177\377\0\0\0\377\177\177\177\377\205\0\0\0\0"

  "\1\377\0\0\377\207\0\0\0\0\203\0\0\0\377\205\0\0\0\0\1\377\0\0\377\207"

  "\0\0\0\0\3\202AA\377\0\0\0\377\202AA\377\204\0\0\0\0\1\377\0\0\377\210"

  "\0\0\0\0\3\377\0\0\377\0\0\0\0\377\0\0\377\204\0\0\0\0\1\377\0\0\377"

  "\207\0\0\0\0\1\377\0\0\377\203\0\0\0\0\1\377\0\0\377\202\0\0\0\0\1\377"

  "\0\0\377\210\0\0\0\0\1\377\0\0\377\203\0\0\0\0\1\377\0\0\377\202\0\0"

  "\0\0\1\377\0\0\377\207\0\0\0\0\1\377\0\0\377\205\0\0\0\0\3\377\0\0\377"

  "\0\0\0\377\202AA\377\207\0\0\0\0\1\377\0\0\377\205\0\0\0\0\203\0\0\0"

  "\377\206\0\0\0\0\1\377\0\0\377\206\0\0\0\0\3\177\177\177\377\0\0\0\377"

  "\177\177\177\377\205\0\0\0\0\2\0\0\0\377\202AA\377\216\0\0\0\0\202\0"

  "\0\0\377\216\0\0\0\0"};

/* GdkPixbuf RGBA C-Source image dump 1-byte-run-length-encoded */

#ifdef __SUNPRO_C

#pragma align 4 (free_pixdata)

#endif

#ifdef __GNUC__

static const guint8 free_pixdata[] __attribute__ ((__aligned__ (4))) = 

#else

static const guint8 free_pixdata[] = 

#endif

{ ""

  /* Pixbuf magic (0x47646b50) */

  "GdkP"

  /* length: header (24) + pixel_data (204) */

  "\0\0\0\344"

  /* pixdata_type (0x2010002) */

  "\2\1\0\2"

  /* rowstride (64) */

  "\0\0\0@"

  /* width (16) */

  "\0\0\0\20"

  /* height (16) */

  "\0\0\0\20"

  /* pixel_data: */

  "\246\0\0\0\0\1\377\0\0\377\217\0\0\0\0\1\377\0\0\377\220\0\0\0\0\1\377"

  "\0\0\377\217\0\0\0\0\1\377\0\0\377\217\0\0\0\0\1\377\0\0\377\220\0\0"

  "\0\0\1\377\0\0\377\217\0\0\0\0\1\377\0\0\377\217\0\0\0\0\1\377\0\0\377"

  "\214\0\0\0\0\1\377\0\0\377\203\0\0\0\0\2\377\0\0\377\0\0\0\0\205\377"

  "\0\0\377\204\0\0\0\0\1\377\0\0\377\204\0\0\0\0\1\377\0\0\377\211\0\0"

  "\0\0\1\377\0\0\377\205\0\0\0\0\1\377\0\0\377\210\0\0\0\0\1\377\0\0\377"

  "\207\0\0\0\0\1\377\0\0\377\206\0\0\0\0\1\377\0\0\377\210\0\0\0\0\1\377"

  "\0\0\377\205\0\0\0\0\1\377\0\0\377\217\0\0\0\0"};

/* GdkPixbuf RGBA C-Source image dump 1-byte-run-length-encoded */

#ifdef __SUNPRO_C

#pragma align 4 (gamma_pixdata)

#endif

#ifdef __GNUC__

static const guint8 gamma_pixdata[] __attribute__ ((__aligned__ (4))) = 

#else

static const guint8 gamma_pixdata[] = 

#endif

{ ""

  /* Pixbuf magic (0x47646b50) */

  "GdkP"

  /* length: header (24) + pixel_data (218) */

  "\0\0\0\362"

  /* pixdata_type (0x2010002) */

  "\2\1\0\2"

  /* rowstride (64) */

  "\0\0\0@"

  /* width (16) */

  "\0\0\0\20"

  /* height (16) */

  "\0\0\0\20"

  /* pixel_data: */

  "\264\0\0\0\0\2\0\0\0\377^^^\377\202\0\0\0\0\3\214\214\214\377\0\0\0\377"

  "\214\214\214\377\211\0\0\0\0\7FFF\377\27\27\27\377\273\273\273\377\0"

  "\0\0\0uuu\377\27\27\27\377\244\244\244\377\212\0\0\0\0\3uuu\377\214\214"

  "\214\377\0\0\0\0\202FFF\377\214\0\0\0\0\4\0\0\0\377\0\0\0\0\0\0\0\377"

  "\214\214\214\377\214\0\0\0\0\3FFF\377\0\0\0\0FFF\377\215\0\0\0\0\3FF"

  "F\377\27\27\27\377\214\214\214\377\215\0\0\0\0\2\244\244\244\377\0\0"

  "\0\377\216\0\0\0\0\2uuu\377^^^\377\216\0\0\0\0\2///\377\0\0\0\377\216"

  "\0\0\0\0\202\0\0\0\377\216\0\0\0\0\2\0\0\0\377///\377\250\0\0\0\0"};

/* GdkPixbuf RGBA C-Source image dump 1-byte-run-length-encoded */

#ifdef __SUNPRO_C

#pragma align 4 (reset_pixdata)

#endif

#ifdef __GNUC__

static const guint8 reset_pixdata[] __attribute__ ((__aligned__ (4))) = 

#else

static const guint8 reset_pixdata[] = 

#endif

{ ""

  /* Pixbuf magic (0x47646b50) */

  "GdkP"

  /* length: header (24) + pixel_data (173) */

  "\0\0\0\305"

  /* pixdata_type (0x2010002) */

  "\2\1\0\2"

  /* rowstride (64) */

  "\0\0\0@"

  /* width (16) */

  "\0\0\0\20"

  /* height (16) */

  "\0\0\0\20"

  /* pixel_data: */

  "\216\0\0\0\0\202\0\0\0\377\216\0\0\0\0\2\202AA\377\0\0\0\377\215\0\0"

  "\0\0\1\377\0\0\377\216\0\0\0\0\1\377\0\0\377\216\0\0\0\0\1\377\0\0\377"

  "\216\0\0\0\0\1\377\0\0\377\216\0\0\0\0\1\377\0\0\377\216\0\0\0\0\1\377"

  "\0\0\377\216\0\0\0\0\1\377\0\0\377\216\0\0\0\0\1\377\0\0\377\216\0\0"

  "\0\0\1\377\0\0\377\216\0\0\0\0\1\377\0\0\377\216\0\0\0\0\1\377\0\0\377"

  "\216\0\0\0\0\1\377\0\0\377\215\0\0\0\0\2\0\0\0\377\202AA\377\216\0\0"

  "\0\0\202\0\0\0\377\216\0\0\0\0"};

G_DEFINE_TYPE (GtkGammaCurve, gtk_gamma_curve, GTK_TYPE_VBOX)

static void

gtk_gamma_curve_class_init (GtkGammaCurveClass *class)

{

  GtkObjectClass *object_class;

  object_class = (GtkObjectClass *) class;

  object_class->destroy = gtk_gamma_curve_destroy;

}

static void

gtk_gamma_curve_init (GtkGammaCurve *curve)

{

  GtkWidget *vbox;

  int i;

  curve->gamma = 1.0;

  curve->table = gtk_table_new (1, 2, FALSE);

  gtk_table_set_col_spacings (GTK_TABLE (curve->table), 3);

  gtk_container_add (GTK_CONTAINER (curve), curve->table);

  curve->curve = gtk_curve_new ();

  g_signal_connect (curve->curve, "curve-type-changed",

		    G_CALLBACK (curve_type_changed_callback), curve);

  gtk_table_attach_defaults (GTK_TABLE (curve->table), curve->curve, 0, 1, 0, 1);

  vbox = gtk_vbox_new (/* homogeneous */ FALSE, /* spacing */ 3);

  gtk_table_attach (GTK_TABLE (curve->table), vbox, 1, 2, 0, 1, 0, 0, 0, 0);

  /* toggle buttons: */

  for (i = 0; i < 3; ++i)

    {

      curve->button[i] = gtk_toggle_button_new ();

      g_object_set_data (G_OBJECT (curve->button[i]), I_("_GtkGammaCurveIndex"),

			 GINT_TO_POINTER (i));

      gtk_container_add (GTK_CONTAINER (vbox), curve->button[i]);

      g_signal_connect (curve->button[i], "realize",

			G_CALLBACK (button_realize_callback), NULL);

      g_signal_connect (curve->button[i], "toggled",

			G_CALLBACK (button_toggled_callback), curve);

      gtk_widget_show (curve->button[i]);

    }

  /* push buttons: */

  for (i = 3; i < 5; ++i)

    {

      curve->button[i] = gtk_button_new ();

      g_object_set_data (G_OBJECT (curve->button[i]), I_("_GtkGammaCurveIndex"),

			 GINT_TO_POINTER (i));

      gtk_container_add (GTK_CONTAINER (vbox), curve->button[i]);

      g_signal_connect (curve->button[i], "realize",

			G_CALLBACK (button_realize_callback), NULL);

      g_signal_connect (curve->button[i], "clicked",

			G_CALLBACK (button_clicked_callback), curve);

      gtk_widget_show (curve->button[i]);

    }

  gtk_widget_show (vbox);

  gtk_widget_show (curve->table);

  gtk_widget_show (curve->curve);

}

static void

button_realize_callback (GtkWidget *w)

{

  GtkWidget *image;

  struct {

    const guint8 *stream;

    gint length;

  } streams[5] = {

    { linear_pixdata, sizeof (linear_pixdata) },

    { spline_pixdata, sizeof (spline_pixdata) },

    { free_pixdata, sizeof (free_pixdata) },

    { gamma_pixdata, sizeof (gamma_pixdata) },

    { reset_pixdata, sizeof (reset_pixdata) }

  };

  GdkPixdata pixdata;

  GdkPixbuf *pixbuf;

  int i;

  i = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (w), "_GtkGammaCurveIndex"));

  gdk_pixdata_deserialize (&pixdata, streams[i].length, streams[i].stream, NULL);

  pixbuf = gdk_pixbuf_from_pixdata (&pixdata, TRUE, NULL);

  image = gtk_image_new_from_pixbuf (pixbuf);

  gtk_container_add (GTK_CONTAINER (w), image);

  gtk_widget_show (image);

  g_object_unref (pixbuf);

}

static void

button_toggled_callback (GtkWidget *w, gpointer data)

{

  GtkGammaCurve *c = data;

  GtkCurveType type;

  int active, i;

  if (!GTK_TOGGLE_BUTTON (w)->active)

    return;

  active = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (w), "_GtkGammaCurveIndex"));

  for (i = 0; i < 3; ++i)

    if ((i != active) && GTK_TOGGLE_BUTTON (c->button[i])->active)

      break;

  if (i < 3)

    gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (c->button[i]), FALSE);

  switch (active)

    {

    case 0:  type = GTK_CURVE_TYPE_SPLINE; break;

    case 1:  type = GTK_CURVE_TYPE_LINEAR; break;

    default: type = GTK_CURVE_TYPE_FREE; break;

    }

  gtk_curve_set_curve_type (GTK_CURVE (c->curve), type);

}

static void

gamma_cancel_callback (GtkWidget *w, gpointer data)

{

  GtkGammaCurve *c = data;

  gtk_widget_destroy (c->gamma_dialog);

}

static void

gamma_ok_callback (GtkWidget *w, gpointer data)

{

  GtkGammaCurve *c = data;

  const gchar *start;

  gchar *end;

  gfloat v;

  start = gtk_entry_get_text (GTK_ENTRY (c->gamma_text));

  if (start)

    {

      v = g_strtod (start, &end;;

      if (end > start && v > 0.0)

	c->gamma = v;

    }

  gtk_curve_set_gamma (GTK_CURVE (c->curve), c->gamma);

  gamma_cancel_callback (w, data);

}

static void

button_clicked_callback (GtkWidget *w, gpointer data)

{

  GtkGammaCurve *c = data;

  int active;

  active = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (w), "_GtkGammaCurveIndex"));

  if (active == 3)

    {

      /* set gamma */

      if (c->gamma_dialog)

	return;

      else

	{

	  GtkWidget *vbox, *hbox, *label, *button;

	  gchar buf[64];

	  c->gamma_dialog = gtk_dialog_new ();

	  gtk_window_set_screen (GTK_WINDOW (c->gamma_dialog),

				 gtk_widget_get_screen (w));

	  gtk_window_set_title (GTK_WINDOW (c->gamma_dialog), _("Gamma"));

	  g_object_add_weak_pointer (G_OBJECT (c->gamma_dialog),

				     (gpointer *)&c->gamma_dialog);

	  vbox = GTK_DIALOG (c->gamma_dialog)->vbox;

	  hbox = gtk_hbox_new (/* homogeneous */ FALSE, 0);

	  gtk_box_pack_start (GTK_BOX (vbox), hbox, TRUE, TRUE, 2);

	  gtk_widget_show (hbox);

	  label = gtk_label_new_with_mnemonic (_("_Gamma value"));

	  gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 2);

	  gtk_widget_show (label);

	  sprintf (buf, "%g", c->gamma);

	  c->gamma_text = gtk_entry_new ();

          gtk_label_set_mnemonic_widget (GTK_LABEL (label), c->gamma_text);

	  gtk_entry_set_text (GTK_ENTRY (c->gamma_text), buf);

	  gtk_box_pack_start (GTK_BOX (hbox), c->gamma_text, TRUE, TRUE, 2);

	  gtk_widget_show (c->gamma_text);

	  /* fill in action area: */

	  hbox = GTK_DIALOG (c->gamma_dialog)->action_area;

          button = gtk_button_new_from_stock (GTK_STOCK_CANCEL);

	  g_signal_connect (button, "clicked",

			    G_CALLBACK (gamma_cancel_callback), c);

	  gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 0);

	  gtk_widget_show (button);

          button = gtk_button_new_from_stock (GTK_STOCK_OK);

	  gtk_widget_set_can_default (button, TRUE);

	  g_signal_connect (button, "clicked",

			    G_CALLBACK (gamma_ok_callback), c);

	  gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 0);

	  gtk_widget_grab_default (button);

	  gtk_widget_show (button);

	  gtk_widget_show (c->gamma_dialog);

	}

    }

  else

    {

      /* reset */

      gtk_curve_reset (GTK_CURVE (c->curve));

    }

}

static void

curve_type_changed_callback (GtkWidget *w, gpointer data)

{

  GtkGammaCurve *c = data;

  GtkCurveType new_type;

  int active;

  new_type = GTK_CURVE (w)->curve_type;

  switch (new_type)

    {

    case GTK_CURVE_TYPE_SPLINE: active = 0; break;

    case GTK_CURVE_TYPE_LINEAR: active = 1; break;

    default:		        active = 2; break;

    }

  if (!GTK_TOGGLE_BUTTON (c->button[active])->active)

    gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (c->button[active]), TRUE);

}

GtkWidget*

gtk_gamma_curve_new (void)

{

  return g_object_new (GTK_TYPE_GAMMA_CURVE, NULL);

}

static void

gtk_gamma_curve_destroy (GtkObject *object)

{

  GtkGammaCurve *c = GTK_GAMMA_CURVE (object);

  if (c->gamma_dialog)

    gtk_widget_destroy (c->gamma_dialog);

  GTK_OBJECT_CLASS (gtk_gamma_curve_parent_class)->destroy (object);

}

#define __GTK_GAMMA_CURVE_C__

#include "gtkaliasdef.c"