gtk2/gtk/gtkgamma.c
2006-07-04 03:50:37 +00:00

498 lines
15 KiB
C

/* 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/.
*/
#include <config.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#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_FLAGS (button, GTK_CAN_DEFAULT);
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;
g_return_if_fail (GTK_IS_GAMMA_CURVE (object));
c = GTK_GAMMA_CURVE (object);
if (c->gamma_dialog)
gtk_widget_destroy (c->gamma_dialog);
if (GTK_OBJECT_CLASS (gtk_gamma_curve_parent_class)->destroy)
(* GTK_OBJECT_CLASS (gtk_gamma_curve_parent_class)->destroy) (object);
}
#define __GTK_GAMMA_CURVE_C__
#include "gtkaliasdef.c"