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gimp/modules/colorsel_cmyk.c

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/* GIMP CMYK ColorSelector
* Copyright (C) 2003 Sven Neumann <sven@gimp.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "config.h"
#include <gtk/gtk.h>
#include "libgimpcolor/gimpcolor.h"
#include "libgimpmodule/gimpmodule.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "libgimp/libgimp-intl.h"
/* definitions and variables */
#define COLORSEL_TYPE_CMYK (colorsel_cmyk_type)
#define COLORSEL_CMYK(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), COLORSEL_TYPE_CMYK, ColorselCmyk))
#define COLORSEL_CMYK_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), COLORSEL_TYPE_CMYK, ColorselCmykClass))
#define COLORSEL_IS_CMYK(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), COLORSEL_TYPE_CMYK))
#define COLORSEL_IS_CMYK_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), COLORSEL_TYPE_CMYK))
typedef struct _ColorselCmyk ColorselCmyk;
typedef struct _ColorselCmykClass ColorselCmykClass;
struct _ColorselCmyk
{
GimpColorSelector parent_instance;
GimpCMYK cmyk;
gdouble pullout;
GtkAdjustment *adj[5];
};
struct _ColorselCmykClass
{
GimpColorSelectorClass parent_class;
};
static GType colorsel_cmyk_get_type (GTypeModule *module);
static void colorsel_cmyk_class_init (ColorselCmykClass *klass);
static void colorsel_cmyk_init (ColorselCmyk *cmyk);
static void colorsel_cmyk_set_color (GimpColorSelector *selector,
const GimpRGB *rgb,
const GimpHSV *hsv);
static void colorsel_cmyk_adj_update (GtkAdjustment *adj,
ColorselCmyk *module);
static void colorsel_cmyk_pullout_update (GtkAdjustment *adj,
ColorselCmyk *module);
static const GimpModuleInfo colorsel_cmyk_info =
{
GIMP_MODULE_ABI_VERSION,
N_("CMYK color selector"),
"Sven Neumann <sven@gimp.org>",
"v0.2",
"(c) 2003, released under the GPL",
"July 2003"
};
static GType colorsel_cmyk_type = 0;
G_MODULE_EXPORT const GimpModuleInfo *
gimp_module_query (GTypeModule *module)
{
return &colorsel_cmyk_info;
}
G_MODULE_EXPORT gboolean
gimp_module_register (GTypeModule *module)
{
colorsel_cmyk_get_type (module);
return TRUE;
}
static GType
colorsel_cmyk_get_type (GTypeModule *module)
{
if (! colorsel_cmyk_type)
{
static const GTypeInfo select_info =
{
sizeof (ColorselCmykClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) colorsel_cmyk_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (ColorselCmyk),
0, /* n_preallocs */
(GInstanceInitFunc) colorsel_cmyk_init,
};
colorsel_cmyk_type =
g_type_module_register_type (module,
GIMP_TYPE_COLOR_SELECTOR,
"ColorselCmyk",
&select_info, 0);
}
return colorsel_cmyk_type;
}
static void
colorsel_cmyk_class_init (ColorselCmykClass *klass)
{
GimpColorSelectorClass *selector_class;
selector_class = GIMP_COLOR_SELECTOR_CLASS (klass);
selector_class->name = _("CMYK");
selector_class->help_page = "cmyk.html";
selector_class->stock_id = GTK_STOCK_PRINT; /* FIXME */
selector_class->set_color = colorsel_cmyk_set_color;
}
static void
colorsel_cmyk_init (ColorselCmyk *module)
{
GtkWidget *table;
GtkWidget *label;
GtkWidget *spinbutton;
GtkObject *adj;
gint i;
static const gchar *cmyk_labels[] =
{
N_("_C"),
N_("_M"),
N_("_Y"),
N_("_K")
};
static const gchar *cmyk_tips[] =
{
N_("Cyan"),
N_("Magenta"),
N_("Yellow"),
N_("Black")
};
module->pullout = 1.0;
table = gtk_table_new (5, 4, FALSE);
gtk_table_set_row_spacings (GTK_TABLE (table), 1);
gtk_table_set_col_spacings (GTK_TABLE (table), 2);
gtk_table_set_col_spacing (GTK_TABLE (table), 0, 0);
gtk_table_set_row_spacing (GTK_TABLE (table), 3, 4);
gtk_box_pack_start (GTK_BOX (module), table, TRUE, FALSE, 0);
for (i = 0; i < 4; i++)
{
adj = gimp_scale_entry_new (GTK_TABLE (table), 1, i,
gettext (cmyk_labels[i]),
80, -1,
0.0,
0.0, 100.0,
1.0, 10.0,
0,
TRUE, 0.0, 0.0,
gettext (cmyk_tips[i]),
NULL);
g_signal_connect (adj, "value_changed",
G_CALLBACK (colorsel_cmyk_adj_update),
module);
module->adj[i] = GTK_ADJUSTMENT (adj);
}
label = gtk_label_new_with_mnemonic (_("Black Pullout (%):"));
gtk_misc_set_alignment (GTK_MISC (label), 1.0, 0.5);
gtk_table_attach (GTK_TABLE (table), label,
2, 3, i, i + 1,
GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (label);
spinbutton = gimp_spin_button_new (&adj, module->pullout * 100.0,
0.0, 100.0, 1.0, 10.0, 0.0,
1.0, 0);
gtk_table_attach (GTK_TABLE (table), spinbutton,
3, 4, i, i + 1,
GTK_SHRINK, GTK_SHRINK, 0, 0);
gtk_widget_show (spinbutton);
gtk_label_set_mnemonic_widget (GTK_LABEL (label), spinbutton);
g_signal_connect (adj, "value_changed",
G_CALLBACK (colorsel_cmyk_pullout_update),
module);
module->adj[i] = GTK_ADJUSTMENT (adj);
gtk_widget_show (table);
}
static void
colorsel_cmyk_set_color (GimpColorSelector *selector,
const GimpRGB *rgb,
const GimpHSV *hsv)
{
ColorselCmyk *module;
module = COLORSEL_CMYK (selector);
gimp_rgb_to_cmyk (rgb, module->pullout, &module->cmyk);
gtk_adjustment_set_value (module->adj[0], module->cmyk.c * 100.0);
gtk_adjustment_set_value (module->adj[1], module->cmyk.m * 100.0);
gtk_adjustment_set_value (module->adj[2], module->cmyk.y * 100.0);
gtk_adjustment_set_value (module->adj[3], module->cmyk.k * 100.0);
}
static void
colorsel_cmyk_adj_update (GtkAdjustment *adj,
ColorselCmyk *module)
{
GimpColorSelector *selector;
gint i;
for (i = 0; i < 4; i++)
if (module->adj[i] == adj)
break;
switch (i)
{
case 0:
module->cmyk.c = adj->value / 100.0;
break;
case 1:
module->cmyk.m = adj->value / 100.0;
break;
case 2:
module->cmyk.y = adj->value / 100.0;
break;
case 3:
module->cmyk.k = adj->value / 100.0;
break;
default:
return;
}
selector = GIMP_COLOR_SELECTOR (module);
gimp_cmyk_to_rgb (&module->cmyk, &selector->rgb);
gimp_rgb_to_hsv (&selector->rgb, &selector->hsv);
gimp_color_selector_color_changed (selector);
}
static void
colorsel_cmyk_pullout_update (GtkAdjustment *adj,
ColorselCmyk *module)
{
GimpColorSelector *selector = GIMP_COLOR_SELECTOR (module);
module->pullout = adj->value / 100.0;
gimp_color_selector_set_color (selector, &selector->rgb, &selector->hsv);
}
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