diff options
Diffstat (limited to 'modules/color-selector-cmyk.c')
| -rw-r--r-- | modules/color-selector-cmyk.c | 421 |
1 files changed, 421 insertions, 0 deletions
diff --git a/modules/color-selector-cmyk.c b/modules/color-selector-cmyk.c new file mode 100644 index 0000000..7fba514 --- /dev/null +++ b/modules/color-selector-cmyk.c @@ -0,0 +1,421 @@ +/* GIMP 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 "libgimpcolor/gimpcolor.h" +#include "libgimpconfig/gimpconfig.h" +#include "libgimpmodule/gimpmodule.h" +#include "libgimpwidgets/gimpwidgets.h" + +#include "libgimp/libgimp-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 +{ + GimpColorSelector parent_instance; + + GimpColorConfig *config; + GimpColorTransform *rgb2cmyk; + GimpColorTransform *cmyk2rgb; + + GimpCMYK cmyk; + GtkAdjustment *adj[4]; + GtkWidget *name_label; + + gboolean in_destruction; +}; + +struct _ColorselCmykClass +{ + GimpColorSelectorClass parent_class; +}; + + +static GType colorsel_cmyk_get_type (void); + +static void colorsel_cmyk_dispose (GObject *object); + +static void colorsel_cmyk_set_color (GimpColorSelector *selector, + const GimpRGB *rgb, + const GimpHSV *hsv); +static void colorsel_cmyk_set_config (GimpColorSelector *selector, + GimpColorConfig *config); + +static void colorsel_cmyk_adj_update (GtkAdjustment *adj, + ColorselCmyk *module); +static void colorsel_cmyk_config_changed (ColorselCmyk *module); + + +static const GimpModuleInfo colorsel_cmyk_info = +{ + GIMP_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, + GIMP_TYPE_COLOR_SELECTOR) + + +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_register_type (module); + + return TRUE; +} + +static void +colorsel_cmyk_class_init (ColorselCmykClass *klass) +{ + GObjectClass *object_class = G_OBJECT_CLASS (klass); + GimpColorSelectorClass *selector_class = GIMP_COLOR_SELECTOR_CLASS (klass); + + object_class->dispose = colorsel_cmyk_dispose; + + selector_class->name = _("CMYK"); + selector_class->help_id = "gimp-colorselector-cmyk"; + selector_class->icon_name = GIMP_ICON_COLOR_SELECTOR_CMYK; + selector_class->set_color = colorsel_cmyk_set_color; + selector_class->set_config = colorsel_cmyk_set_config; +} + +static void +colorsel_cmyk_class_finalize (ColorselCmykClass *klass) +{ +} + +static void +colorsel_cmyk_init (ColorselCmyk *module) +{ + GtkWidget *table; + GtkObject *adj; + 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; + module->rgb2cmyk = NULL; + module->cmyk2rgb = NULL; + + gtk_box_set_spacing (GTK_BOX (module), 6); + + table = gtk_table_new (4, 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_box_pack_start (GTK_BOX (module), table, FALSE, FALSE, 0); + gtk_widget_show (table); + + for (i = 0; i < 4; i++) + { + adj = gimp_scale_entry_new (GTK_TABLE (table), 1, i, + gettext (cmyk_labels[i]), + -1, -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); + } + + 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); + gimp_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 (GIMP_COLOR_SELECTOR (object), NULL); + + G_OBJECT_CLASS (colorsel_cmyk_parent_class)->dispose (object); +} + +static void +colorsel_cmyk_set_color (GimpColorSelector *selector, + const GimpRGB *rgb, + const GimpHSV *hsv) +{ + ColorselCmyk *module = COLORSEL_CMYK (selector); + gdouble values[4]; + gint i; + + if (module->rgb2cmyk) + { + gdouble rgb_values[3]; + gdouble cmyk_values[4]; + + rgb_values[0] = rgb->r; + rgb_values[1] = rgb->g; + rgb_values[2] = rgb->b; + + gimp_color_transform_process_pixels (module->rgb2cmyk, + babl_format ("R'G'B' double"), + rgb_values, + babl_format ("CMYK double"), + cmyk_values, + 1); + + module->cmyk.c = cmyk_values[0] / 100.0; + module->cmyk.m = cmyk_values[1] / 100.0; + module->cmyk.y = cmyk_values[2] / 100.0; + module->cmyk.k = cmyk_values[3] / 100.0; + } + else + { + gimp_rgb_to_cmyk (rgb, 1.0, &module->cmyk); + } + + values[0] = module->cmyk.c * 100.0; + values[1] = module->cmyk.m * 100.0; + values[2] = module->cmyk.y * 100.0; + values[3] = module->cmyk.k * 100.0; + + for (i = 0; i < 4; i++) + { + g_signal_handlers_block_by_func (module->adj[i], + colorsel_cmyk_adj_update, + module); + + gtk_adjustment_set_value (module->adj[i], values[i]); + + g_signal_handlers_unblock_by_func (module->adj[i], + colorsel_cmyk_adj_update, + module); + } +} + +static void +colorsel_cmyk_set_config (GimpColorSelector *selector, + GimpColorConfig *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_adj_update (GtkAdjustment *adj, + ColorselCmyk *module) +{ + GimpColorSelector *selector = GIMP_COLOR_SELECTOR (module); + gint i; + gdouble value; + + for (i = 0; i < 4; i++) + if (module->adj[i] == adj) + break; + + value = gtk_adjustment_get_value (adj) / 100.0; + + switch (i) + { + case 0: + module->cmyk.c = value; + break; + case 1: + module->cmyk.m = value; + break; + case 2: + module->cmyk.y = value; + break; + case 3: + module->cmyk.k = value; + break; + default: + return; + } + + if (module->cmyk2rgb) + { + gdouble cmyk_values[4]; + gdouble rgb_values[3]; + + cmyk_values[0] = module->cmyk.c * 100.0; + cmyk_values[1] = module->cmyk.m * 100.0; + cmyk_values[2] = module->cmyk.y * 100.0; + cmyk_values[3] = module->cmyk.k * 100.0; + + gimp_color_transform_process_pixels (module->cmyk2rgb, + babl_format ("CMYK double"), + cmyk_values, + babl_format ("R'G'B' double"), + rgb_values, + 1); + + selector->rgb.r = rgb_values[0]; + selector->rgb.g = rgb_values[1]; + selector->rgb.b = rgb_values[2]; + } + else + { + 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_config_changed (ColorselCmyk *module) +{ + GimpColorSelector *selector = GIMP_COLOR_SELECTOR (module); + GimpColorConfig *config = module->config; + GimpColorTransformFlags flags = 0; + GimpColorProfile *rgb_profile = NULL; + GimpColorProfile *cmyk_profile = NULL; + gchar *text; + + if (module->rgb2cmyk) + { + g_object_unref (module->rgb2cmyk); + module->rgb2cmyk = NULL; + } + + if (module->cmyk2rgb) + { + g_object_unref (module->cmyk2rgb); + module->cmyk2rgb = NULL; + } + + gtk_label_set_text (GTK_LABEL (module->name_label), _("Profile: (none)")); + gimp_help_set_help_data (module->name_label, NULL, NULL); + + if (! config) + goto out; + + cmyk_profile = gimp_color_config_get_cmyk_color_profile (config, NULL); + if (! cmyk_profile) + goto out; + + rgb_profile = gimp_color_profile_new_rgb_srgb (); + + text = g_strdup_printf (_("Profile: %s"), + gimp_color_profile_get_label (cmyk_profile)); + gtk_label_set_text (GTK_LABEL (module->name_label), text); + g_free (text); + + gimp_help_set_help_data (module->name_label, + gimp_color_profile_get_summary (cmyk_profile), + NULL); + + flags |= GIMP_COLOR_TRANSFORM_FLAGS_NOOPTIMIZE; + flags |= GIMP_COLOR_TRANSFORM_FLAGS_BLACK_POINT_COMPENSATION; + + module->rgb2cmyk = gimp_color_transform_new (rgb_profile, + babl_format ("R'G'B' double"), + cmyk_profile, + babl_format ("CMYK double"), + GIMP_COLOR_RENDERING_INTENT_PERCEPTUAL, + flags); + module->cmyk2rgb = gimp_color_transform_new (cmyk_profile, + babl_format ("CMYK double"), + rgb_profile, + babl_format ("R'G'B' double"), + GIMP_COLOR_RENDERING_INTENT_PERCEPTUAL, + flags); + + out: + + if (rgb_profile) + g_object_unref (rgb_profile); + + if (cmyk_profile) + g_object_unref (cmyk_profile); + + if (! module->in_destruction) + colorsel_cmyk_set_color (selector, &selector->rgb, &selector->hsv); +} |