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PIKApp/modules/color-selector-cmyk.c

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/* PIKA CMYK ColorSelector using littleCMS
* Copyright (C) 2006 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 3 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, see <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <gegl.h>
#include <gtk/gtk.h>
#include "libpikacolor/pikacolor.h"
#include "libpikaconfig/pikaconfig.h"
#include "libpikamodule/pikamodule.h"
#include "libpikawidgets/pikawidgets.h"
#include "libpika/libpika-intl.h"
/* definitions and variables */
#define COLORSEL_TYPE_CMYK (colorsel_cmyk_get_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
{
PikaColorSelector parent_instance;
PikaColorConfig *config;
PikaColorProfile *simulation_profile;
PikaColorRenderingIntent simulation_intent;
gboolean simulation_bpc;
PikaCMYK cmyk;
GtkWidget *scales[4];
GtkWidget *name_label;
gboolean in_destruction;
};
struct _ColorselCmykClass
{
PikaColorSelectorClass parent_class;
};
GType colorsel_cmyk_get_type (void);
static void colorsel_cmyk_dispose (GObject *object);
static void colorsel_cmyk_set_color (PikaColorSelector *selector,
const PikaRGB *rgb,
const PikaHSV *hsv);
static void colorsel_cmyk_set_config (PikaColorSelector *selector,
PikaColorConfig *config);
static void colorsel_cmyk_set_simulation (PikaColorSelector *selector,
PikaColorProfile *profile,
PikaColorRenderingIntent intent,
gboolean bpc);
static void colorsel_cmyk_scale_update (PikaLabelSpin *scale,
ColorselCmyk *module);
static void colorsel_cmyk_config_changed (ColorselCmyk *module);
static const PikaModuleInfo colorsel_cmyk_info =
{
PIKA_MODULE_ABI_VERSION,
N_("CMYK color selector (using color profile)"),
"Sven Neumann <sven@gimp.org>",
"v0.1",
"(c) 2006, released under the GPL",
"September 2006"
};
G_DEFINE_DYNAMIC_TYPE (ColorselCmyk, colorsel_cmyk,
PIKA_TYPE_COLOR_SELECTOR)
G_MODULE_EXPORT const PikaModuleInfo *
pika_module_query (GTypeModule *module)
{
return &colorsel_cmyk_info;
}
G_MODULE_EXPORT gboolean
pika_module_register (GTypeModule *module)
{
colorsel_cmyk_register_type (module);
return TRUE;
}
static void
colorsel_cmyk_class_init (ColorselCmykClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
PikaColorSelectorClass *selector_class = PIKA_COLOR_SELECTOR_CLASS (klass);
object_class->dispose = colorsel_cmyk_dispose;
selector_class->name = _("CMYK");
selector_class->help_id = "pika-colorselector-cmyk";
selector_class->icon_name = PIKA_ICON_COLOR_SELECTOR_CMYK;
selector_class->set_color = colorsel_cmyk_set_color;
selector_class->set_config = colorsel_cmyk_set_config;
selector_class->set_simulation = colorsel_cmyk_set_simulation;
gtk_widget_class_set_css_name (GTK_WIDGET_CLASS (klass), "ColorselCmyk");
}
static void
colorsel_cmyk_class_finalize (ColorselCmykClass *klass)
{
}
static void
colorsel_cmyk_init (ColorselCmyk *module)
{
GtkWidget *grid;
gint i;
static const gchar * const cmyk_labels[] =
{
/* Cyan */
N_("_C"),
/* Magenta */
N_("_M"),
/* Yellow */
N_("_Y"),
/* Key (Black) */
N_("_K")
};
static const gchar * const cmyk_tips[] =
{
N_("Cyan"),
N_("Magenta"),
N_("Yellow"),
N_("Black")
};
module->config = NULL;
gtk_box_set_spacing (GTK_BOX (module), 6);
grid = gtk_grid_new ();
gtk_grid_set_row_spacing (GTK_GRID (grid), 1);
gtk_grid_set_column_spacing (GTK_GRID (grid), 2);
gtk_box_pack_start (GTK_BOX (module), grid, FALSE, FALSE, 0);
gtk_widget_show (grid);
for (i = 0; i < 4; i++)
{
module->scales[i] = pika_scale_entry_new (gettext (cmyk_labels[i]),
0.0, 0.0, 100.0, 0);
pika_help_set_help_data (module->scales[i], gettext (cmyk_tips[i]), NULL);
g_signal_connect (module->scales[i], "value-changed",
G_CALLBACK (colorsel_cmyk_scale_update),
module);
gtk_grid_attach (GTK_GRID (grid), module->scales[i], 1, i, 3, 1);
gtk_widget_show (module->scales[i]);
}
module->name_label = gtk_label_new (NULL);
gtk_label_set_xalign (GTK_LABEL (module->name_label), 0.0);
gtk_label_set_ellipsize (GTK_LABEL (module->name_label), PANGO_ELLIPSIZE_END);
pika_label_set_attributes (GTK_LABEL (module->name_label),
PANGO_ATTR_SCALE, PANGO_SCALE_SMALL,
-1);
gtk_box_pack_start (GTK_BOX (module), module->name_label, FALSE, FALSE, 0);
gtk_widget_show (module->name_label);
}
static void
colorsel_cmyk_dispose (GObject *object)
{
ColorselCmyk *module = COLORSEL_CMYK (object);
module->in_destruction = TRUE;
colorsel_cmyk_set_config (PIKA_COLOR_SELECTOR (object), NULL);
g_clear_object (&module->simulation_profile);
G_OBJECT_CLASS (colorsel_cmyk_parent_class)->dispose (object);
}
static void
colorsel_cmyk_set_color (PikaColorSelector *selector,
const PikaRGB *rgb,
const PikaHSV *hsv)
{
PikaColorProfile *cmyk_profile = NULL;
PikaColorRenderingIntent intent = PIKA_COLOR_RENDERING_INTENT_RELATIVE_COLORIMETRIC;
const Babl *fish = NULL;
const Babl *space = NULL;
ColorselCmyk *module = COLORSEL_CMYK (selector);
gfloat values[4];
gint i;
/* Try Image Soft-proofing profile first, then default CMYK profile */
if (module->simulation_profile)
cmyk_profile = module->simulation_profile;
if (! cmyk_profile && PIKA_IS_COLOR_CONFIG (module->config))
cmyk_profile = pika_color_config_get_cmyk_color_profile (PIKA_COLOR_CONFIG (module->config),
NULL);
if (cmyk_profile && pika_color_profile_is_cmyk (cmyk_profile))
{
intent = module->simulation_intent;
space = pika_color_profile_get_space (cmyk_profile, intent,
NULL);
}
fish = babl_fish (babl_format ("R'G'B'A double"),
babl_format_with_space ("CMYK float", space));
babl_process (fish, rgb, values, 1);
for (i = 0; i < 4; i++)
{
g_signal_handlers_block_by_func (module->scales[i],
colorsel_cmyk_scale_update,
module);
values[i] *= 100.0;
pika_label_spin_set_value (PIKA_LABEL_SPIN (module->scales[i]), values[i]);
g_signal_handlers_unblock_by_func (module->scales[i],
colorsel_cmyk_scale_update,
module);
}
if (cmyk_profile && ! module->simulation_profile)
g_object_unref (cmyk_profile);
}
static void
colorsel_cmyk_set_config (PikaColorSelector *selector,
PikaColorConfig *config)
{
ColorselCmyk *module = COLORSEL_CMYK (selector);
if (config != module->config)
{
if (module->config)
g_signal_handlers_disconnect_by_func (module->config,
colorsel_cmyk_config_changed,
module);
g_set_object (&module->config, config);
if (module->config)
g_signal_connect_swapped (module->config, "notify",
G_CALLBACK (colorsel_cmyk_config_changed),
module);
colorsel_cmyk_config_changed (module);
}
}
static void
colorsel_cmyk_set_simulation (PikaColorSelector *selector,
PikaColorProfile *profile,
PikaColorRenderingIntent intent,
gboolean bpc)
{
ColorselCmyk *module = COLORSEL_CMYK (selector);
PikaColorProfile *cmyk_profile = NULL;
gchar *text;
gtk_label_set_text (GTK_LABEL (module->name_label), _("Profile: (none)"));
pika_help_set_help_data (module->name_label, NULL, NULL);
g_set_object (&module->simulation_profile, profile);
cmyk_profile = module->simulation_profile;
if (! cmyk_profile && PIKA_IS_COLOR_CONFIG (module->config))
cmyk_profile = pika_color_config_get_cmyk_color_profile (PIKA_COLOR_CONFIG (module->config),
NULL);
if (cmyk_profile && pika_color_profile_is_cmyk (cmyk_profile))
{
text = g_strdup_printf (_("Profile: %s"),
pika_color_profile_get_label (cmyk_profile));
gtk_label_set_text (GTK_LABEL (module->name_label), text);
g_free (text);
pika_help_set_help_data (module->name_label,
pika_color_profile_get_summary (cmyk_profile),
NULL);
}
module->simulation_intent = intent;
module->simulation_bpc = bpc;
if (! module->in_destruction)
colorsel_cmyk_set_color (selector, &selector->rgb, &selector->hsv);
}
static void
colorsel_cmyk_scale_update (PikaLabelSpin *scale,
ColorselCmyk *module)
{
PikaColorProfile *cmyk_profile = NULL;
PikaColorSelector *selector = PIKA_COLOR_SELECTOR (module);
PikaColorRenderingIntent intent = PIKA_COLOR_RENDERING_INTENT_RELATIVE_COLORIMETRIC;
const Babl *fish = NULL;
const Babl *space = NULL;
gfloat cmyk_values[4];
gfloat rgb_values[3];
gint i;
for (i = 0; i < 4; i++)
cmyk_values[i] = pika_label_spin_get_value (PIKA_LABEL_SPIN (module->scales[i])) / 100.0;
if (module->simulation_profile)
cmyk_profile = module->simulation_profile;
if (! cmyk_profile && PIKA_IS_COLOR_CONFIG (module->config))
cmyk_profile = pika_color_config_get_cmyk_color_profile (PIKA_COLOR_CONFIG (module->config),
NULL);
if (cmyk_profile)
{
intent = module->simulation_intent;
space = pika_color_profile_get_space (cmyk_profile, intent,
NULL);
}
fish = babl_fish (babl_format_with_space ("CMYK float", space),
babl_format ("R'G'B'A float"));
babl_process (fish, cmyk_values, rgb_values, 1);
selector->rgb.r = rgb_values[0];
selector->rgb.g = rgb_values[1];
selector->rgb.b = rgb_values[2];
pika_rgb_to_hsv (&selector->rgb, &selector->hsv);
pika_color_selector_emit_color_changed (selector);
if (cmyk_profile && ! module->simulation_profile)
g_object_unref (cmyk_profile);
}
static void
colorsel_cmyk_config_changed (ColorselCmyk *module)
{
PikaColorSelector *selector = PIKA_COLOR_SELECTOR (module);
PikaColorConfig *config = module->config;
PikaColorProfile *rgb_profile = NULL;
PikaColorProfile *cmyk_profile = NULL;
gchar *text;
gtk_label_set_text (GTK_LABEL (module->name_label), _("Profile: (none)"));
pika_help_set_help_data (module->name_label, NULL, NULL);
if (! config)
goto out;
if (module->simulation_profile)
cmyk_profile = module->simulation_profile;
if (! cmyk_profile && PIKA_IS_COLOR_CONFIG (module->config))
cmyk_profile = pika_color_config_get_cmyk_color_profile (PIKA_COLOR_CONFIG (module->config),
NULL);
if (! cmyk_profile)
goto out;
rgb_profile = pika_color_profile_new_rgb_srgb ();
text = g_strdup_printf (_("Profile: %s"),
pika_color_profile_get_label (cmyk_profile));
gtk_label_set_text (GTK_LABEL (module->name_label), text);
g_free (text);
pika_help_set_help_data (module->name_label,
pika_color_profile_get_summary (cmyk_profile),
NULL);
out:
if (rgb_profile)
g_object_unref (rgb_profile);
if (cmyk_profile && ! module->simulation_profile)
g_object_unref (cmyk_profile);
if (! module->in_destruction)
colorsel_cmyk_set_color (selector, &selector->rgb, &selector->hsv);
}
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