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Gimp/app/widgets/gimpcolorframe.c
Michael Natterer a27f7c7724 Issue #1788 - Inconsistency between FG color and selected color in... 
...palette views despite selected color being in the currently
selected pallette

As suggested by Massimo, changing the color comparison EPSILON in
gimppalette.c from 1e-10 to 1e-6 fixes this, and is really small
enough.

Also, generally clean up color comparison epsilons:

- use a #define, not hardcoded values for all uses of
  gimp_rgb[a]_distance()
- call the #defines RGB_EPSILON and RGBA_EPSILON
- make them all 1e-6 or larger

(cherry picked from commit abd7cbfc8d)
2019-01-02 01:53:02 +01:00

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* 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 "libgimpmath/gimpmath.h"
#include "libgimpcolor/gimpcolor.h"
#include "libgimpconfig/gimpconfig.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "widgets-types.h"
#include "gegl/gimp-babl.h"
#include "core/gimpimage.h"
#include "gimpcolorframe.h"
#include "gimp-intl.h"
#define RGBA_EPSILON 1e-6
enum
{
PROP_0,
PROP_MODE,
PROP_HAS_NUMBER,
PROP_NUMBER,
PROP_HAS_COLOR_AREA,
PROP_HAS_COORDS,
PROP_ELLIPSIZE,
};
/* local function prototypes */
static void gimp_color_frame_dispose (GObject *object);
static void gimp_color_frame_finalize (GObject *object);
static void gimp_color_frame_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
static void gimp_color_frame_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void gimp_color_frame_style_set (GtkWidget *widget,
GtkStyle *prev_style);
static gboolean gimp_color_frame_expose (GtkWidget *widget,
GdkEventExpose *eevent);
static void gimp_color_frame_combo_callback (GtkWidget *widget,
GimpColorFrame *frame);
static void gimp_color_frame_update (GimpColorFrame *frame);
static void gimp_color_frame_create_transform (GimpColorFrame *frame);
static void gimp_color_frame_destroy_transform (GimpColorFrame *frame);
G_DEFINE_TYPE (GimpColorFrame, gimp_color_frame, GIMP_TYPE_FRAME)
#define parent_class gimp_color_frame_parent_class
static void
gimp_color_frame_class_init (GimpColorFrameClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
object_class->dispose = gimp_color_frame_dispose;
object_class->finalize = gimp_color_frame_finalize;
object_class->get_property = gimp_color_frame_get_property;
object_class->set_property = gimp_color_frame_set_property;
widget_class->style_set = gimp_color_frame_style_set;
widget_class->expose_event = gimp_color_frame_expose;
g_object_class_install_property (object_class, PROP_MODE,
g_param_spec_enum ("mode",
NULL, NULL,
GIMP_TYPE_COLOR_PICK_MODE,
GIMP_COLOR_PICK_MODE_PIXEL,
GIMP_PARAM_READWRITE));
g_object_class_install_property (object_class, PROP_HAS_NUMBER,
g_param_spec_boolean ("has-number",
NULL, NULL,
FALSE,
GIMP_PARAM_READWRITE));
g_object_class_install_property (object_class, PROP_NUMBER,
g_param_spec_int ("number",
NULL, NULL,
0, 256, 0,
GIMP_PARAM_READWRITE));
g_object_class_install_property (object_class, PROP_HAS_COLOR_AREA,
g_param_spec_boolean ("has-color-area",
NULL, NULL,
FALSE,
GIMP_PARAM_READWRITE));
g_object_class_install_property (object_class, PROP_HAS_COORDS,
g_param_spec_boolean ("has-coords",
NULL, NULL,
FALSE,
GIMP_PARAM_READWRITE));
g_object_class_install_property (object_class, PROP_ELLIPSIZE,
g_param_spec_enum ("ellipsize",
NULL, NULL,
PANGO_TYPE_ELLIPSIZE_MODE,
PANGO_ELLIPSIZE_NONE,
GIMP_PARAM_READWRITE));
}
static void
gimp_color_frame_init (GimpColorFrame *frame)
{
GtkListStore *store;
GtkWidget *vbox;
GtkWidget *vbox2;
GtkWidget *label;
gint i;
frame->sample_valid = FALSE;
frame->sample_format = babl_format ("R'G'B' u8");
gimp_rgba_set (&frame->color, 0.0, 0.0, 0.0, GIMP_OPACITY_OPAQUE);
/* create the store manually so the values have a nice order */
store = gimp_enum_store_new_with_values (GIMP_TYPE_COLOR_PICK_MODE,
GIMP_COLOR_PICK_MODE_LAST + 1,
GIMP_COLOR_PICK_MODE_PIXEL,
GIMP_COLOR_PICK_MODE_RGB_PERCENT,
GIMP_COLOR_PICK_MODE_RGB_U8,
GIMP_COLOR_PICK_MODE_HSV,
GIMP_COLOR_PICK_MODE_LCH,
GIMP_COLOR_PICK_MODE_LAB,
GIMP_COLOR_PICK_MODE_XYY,
GIMP_COLOR_PICK_MODE_CMYK);
frame->combo = gimp_enum_combo_box_new_with_model (GIMP_ENUM_STORE (store));
g_object_unref (store);
gtk_frame_set_label_widget (GTK_FRAME (frame), frame->combo);
gtk_widget_show (frame->combo);
g_signal_connect (frame->combo, "changed",
G_CALLBACK (gimp_color_frame_combo_callback),
frame);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 2);
gtk_container_add (GTK_CONTAINER (frame), vbox);
gtk_widget_show (vbox);
frame->color_area =
g_object_new (GIMP_TYPE_COLOR_AREA,
"color", &frame->color,
"type", GIMP_COLOR_AREA_SMALL_CHECKS,
"drag-mask", GDK_BUTTON1_MASK,
"draw-border", TRUE,
"height-request", 20,
NULL);
gtk_box_pack_start (GTK_BOX (vbox), frame->color_area, FALSE, FALSE, 0);
vbox2 = gtk_box_new (GTK_ORIENTATION_VERTICAL, 2);
gtk_box_set_homogeneous (GTK_BOX (vbox2), TRUE);
gtk_box_pack_start (GTK_BOX (vbox), vbox2, FALSE, FALSE, 0);
gtk_widget_show (vbox2);
for (i = 0; i < GIMP_COLOR_FRAME_ROWS; i++)
{
GtkWidget *hbox;
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
gtk_box_pack_start (GTK_BOX (vbox2), hbox, FALSE, FALSE, 0);
gtk_widget_show (hbox);
frame->name_labels[i] = gtk_label_new (" ");
gtk_label_set_xalign (GTK_LABEL (frame->name_labels[i]), 0.0);
gtk_box_pack_start (GTK_BOX (hbox), frame->name_labels[i],
FALSE, FALSE, 0);
gtk_widget_show (frame->name_labels[i]);
frame->value_labels[i] = gtk_label_new (" ");
gtk_label_set_selectable (GTK_LABEL (frame->value_labels[i]), TRUE);
gtk_label_set_xalign (GTK_LABEL (frame->value_labels[i]), 1.0);
gtk_box_pack_end (GTK_BOX (hbox), frame->value_labels[i],
TRUE, TRUE, 0);
gtk_widget_show (frame->value_labels[i]);
}
frame->coords_box_x = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
gtk_box_pack_start (GTK_BOX (vbox), frame->coords_box_x, FALSE, FALSE, 0);
/* TRANSLATORS: X for the X coordinate. */
label = gtk_label_new (C_("Coordinates", "X:"));
gtk_box_pack_start (GTK_BOX (frame->coords_box_x), label, FALSE, FALSE, 0);
gtk_widget_show (label);
frame->coords_label_x = gtk_label_new (" ");
gtk_label_set_selectable (GTK_LABEL (frame->coords_label_x), TRUE);
gtk_box_pack_end (GTK_BOX (frame->coords_box_x), frame->coords_label_x,
FALSE, FALSE, 0);
gtk_widget_show (frame->coords_label_x);
frame->coords_box_y = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
gtk_box_pack_start (GTK_BOX (vbox), frame->coords_box_y, FALSE, FALSE, 0);
/* TRANSLATORS: Y for the Y coordinate. */
label = gtk_label_new (C_("Coordinates", "Y:"));
gtk_box_pack_start (GTK_BOX (frame->coords_box_y), label, FALSE, FALSE, 0);
gtk_widget_show (label);
frame->coords_label_y = gtk_label_new (" ");
gtk_label_set_selectable (GTK_LABEL (frame->coords_label_y), TRUE);
gtk_box_pack_end (GTK_BOX (frame->coords_box_y), frame->coords_label_y,
FALSE, FALSE, 0);
gtk_widget_show (frame->coords_label_y);
}
static void
gimp_color_frame_dispose (GObject *object)
{
GimpColorFrame *frame = GIMP_COLOR_FRAME (object);
gimp_color_frame_set_color_config (frame, NULL);
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
gimp_color_frame_finalize (GObject *object)
{
GimpColorFrame *frame = GIMP_COLOR_FRAME (object);
g_clear_object (&frame->number_layout);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gimp_color_frame_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GimpColorFrame *frame = GIMP_COLOR_FRAME (object);
switch (property_id)
{
case PROP_MODE:
g_value_set_enum (value, frame->pick_mode);
break;
case PROP_ELLIPSIZE:
g_value_set_enum (value, frame->ellipsize);
break;
case PROP_HAS_NUMBER:
g_value_set_boolean (value, frame->has_number);
break;
case PROP_NUMBER:
g_value_set_int (value, frame->number);
break;
case PROP_HAS_COLOR_AREA:
g_value_set_boolean (value, frame->has_color_area);
break;
case PROP_HAS_COORDS:
g_value_set_boolean (value, frame->has_coords);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gimp_color_frame_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GimpColorFrame *frame = GIMP_COLOR_FRAME (object);
switch (property_id)
{
case PROP_MODE:
gimp_color_frame_set_mode (frame, g_value_get_enum (value));
break;
case PROP_ELLIPSIZE:
gimp_color_frame_set_ellipsize (frame, g_value_get_enum (value));
break;
case PROP_HAS_NUMBER:
gimp_color_frame_set_has_number (frame, g_value_get_boolean (value));
break;
case PROP_NUMBER:
gimp_color_frame_set_number (frame, g_value_get_int (value));
break;
case PROP_HAS_COLOR_AREA:
gimp_color_frame_set_has_color_area (frame, g_value_get_boolean (value));
break;
case PROP_HAS_COORDS:
gimp_color_frame_set_has_coords (frame, g_value_get_boolean (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gimp_color_frame_style_set (GtkWidget *widget,
GtkStyle *prev_style)
{
GimpColorFrame *frame = GIMP_COLOR_FRAME (widget);
GTK_WIDGET_CLASS (parent_class)->style_set (widget, prev_style);
g_clear_object (&frame->number_layout);
}
static gboolean
gimp_color_frame_expose (GtkWidget *widget,
GdkEventExpose *eevent)
{
GimpColorFrame *frame = GIMP_COLOR_FRAME (widget);
if (frame->has_number)
{
GtkStyle *style = gtk_widget_get_style (widget);
GtkAllocation allocation;
GtkAllocation combo_allocation;
GtkAllocation color_area_allocation;
GtkAllocation coords_box_x_allocation;
GtkAllocation coords_box_y_allocation;
cairo_t *cr;
gchar buf[8];
gint w, h;
gdouble scale;
gtk_widget_get_allocation (widget, &allocation);
gtk_widget_get_allocation (frame->combo, &combo_allocation);
gtk_widget_get_allocation (frame->color_area, &color_area_allocation);
gtk_widget_get_allocation (frame->coords_box_x, &coords_box_x_allocation);
gtk_widget_get_allocation (frame->coords_box_y, &coords_box_y_allocation);
cr = gdk_cairo_create (gtk_widget_get_window (widget));
gdk_cairo_region (cr, eevent->region);
cairo_clip (cr);
cairo_translate (cr, allocation.x, allocation.y);
gdk_cairo_set_source_color (cr, &style->light[GTK_STATE_NORMAL]);
g_snprintf (buf, sizeof (buf), "%d", frame->number);
if (! frame->number_layout)
frame->number_layout = gtk_widget_create_pango_layout (widget, NULL);
pango_layout_set_text (frame->number_layout, buf, -1);
pango_layout_get_pixel_size (frame->number_layout, &w, &h);
scale = ((gdouble) (allocation.height -
combo_allocation.height -
color_area_allocation.height -
(coords_box_x_allocation.height +
coords_box_y_allocation.height)) /
(gdouble) h);
cairo_scale (cr, scale, scale);
cairo_move_to (cr,
(allocation.width / 2.0) / scale - w / 2.0,
(allocation.height / 2.0 +
combo_allocation.height / 2.0 +
color_area_allocation.height / 2.0 +
coords_box_x_allocation.height / 2.0 +
coords_box_y_allocation.height / 2.0) / scale - h / 2.0);
pango_cairo_show_layout (cr, frame->number_layout);
cairo_destroy (cr);
}
return GTK_WIDGET_CLASS (parent_class)->expose_event (widget, eevent);
}
/* public functions */
/**
* gimp_color_frame_new:
*
* Creates a new #GimpColorFrame widget.
*
* Return value: The new #GimpColorFrame widget.
**/
GtkWidget *
gimp_color_frame_new (void)
{
return g_object_new (GIMP_TYPE_COLOR_FRAME, NULL);
}
/**
* gimp_color_frame_set_mode:
* @frame: The #GimpColorFrame.
* @mode: The new @mode.
*
* Sets the #GimpColorFrame's color pick @mode. Calling this function
* does the same as selecting the @mode from the frame's #GtkComboBox.
**/
void
gimp_color_frame_set_mode (GimpColorFrame *frame,
GimpColorPickMode mode)
{
g_return_if_fail (GIMP_IS_COLOR_FRAME (frame));
gimp_int_combo_box_set_active (GIMP_INT_COMBO_BOX (frame->combo), mode);
}
void
gimp_color_frame_set_ellipsize (GimpColorFrame *frame,
PangoEllipsizeMode ellipsize)
{
gint i;
g_return_if_fail (GIMP_IS_COLOR_FRAME (frame));
if (ellipsize != frame->ellipsize)
{
frame->ellipsize = ellipsize;
for (i = 0; i < GIMP_COLOR_FRAME_ROWS; i++)
{
if (frame->value_labels[i])
gtk_label_set_ellipsize (GTK_LABEL (frame->value_labels[i]),
ellipsize);
}
}
}
void
gimp_color_frame_set_has_number (GimpColorFrame *frame,
gboolean has_number)
{
g_return_if_fail (GIMP_IS_COLOR_FRAME (frame));
if (has_number != frame->has_number)
{
frame->has_number = has_number ? TRUE : FALSE;
gtk_widget_queue_draw (GTK_WIDGET (frame));
g_object_notify (G_OBJECT (frame), "has-number");
}
}
void
gimp_color_frame_set_number (GimpColorFrame *frame,
gint number)
{
g_return_if_fail (GIMP_IS_COLOR_FRAME (frame));
if (number != frame->number)
{
frame->number = number;
gtk_widget_queue_draw (GTK_WIDGET (frame));
g_object_notify (G_OBJECT (frame), "number");
}
}
void
gimp_color_frame_set_has_color_area (GimpColorFrame *frame,
gboolean has_color_area)
{
g_return_if_fail (GIMP_IS_COLOR_FRAME (frame));
if (has_color_area != frame->has_color_area)
{
frame->has_color_area = has_color_area ? TRUE : FALSE;
g_object_set (frame->color_area, "visible", frame->has_color_area, NULL);
g_object_notify (G_OBJECT (frame), "has-color-area");
}
}
void
gimp_color_frame_set_has_coords (GimpColorFrame *frame,
gboolean has_coords)
{
g_return_if_fail (GIMP_IS_COLOR_FRAME (frame));
if (has_coords != frame->has_coords)
{
frame->has_coords = has_coords ? TRUE : FALSE;
g_object_set (frame->coords_box_x, "visible", frame->has_coords, NULL);
g_object_set (frame->coords_box_y, "visible", frame->has_coords, NULL);
g_object_notify (G_OBJECT (frame), "has-coords");
}
}
/**
* gimp_color_frame_set_color:
* @frame: The #GimpColorFrame.
* @sample_average: The set @color is the result of averaging
* @sample_format: The format of the #GimpDrawable or #GimpImage the @color
* was picked from.
* @pixel: The raw pixel in @sample_format.
* @color: The @color to set.
* @x: X position where the color was picked.
* @y: Y position where the color was picked.
*
* Sets the color sample to display in the #GimpColorFrame. if
* @sample_average is %TRUE, @pixel represents the sample at the
* center of the average area and will not be displayed.
**/
void
gimp_color_frame_set_color (GimpColorFrame *frame,
gboolean sample_average,
const Babl *sample_format,
gpointer pixel,
const GimpRGB *color,
gint x,
gint y)
{
g_return_if_fail (GIMP_IS_COLOR_FRAME (frame));
g_return_if_fail (color != NULL);
if (frame->sample_valid &&
frame->sample_average == sample_average &&
frame->sample_format == sample_format &&
frame->x == x &&
frame->y == y &&
gimp_rgba_distance (&frame->color, color) < RGBA_EPSILON)
{
frame->color = *color;
return;
}
frame->sample_valid = TRUE;
frame->sample_average = sample_average;
frame->sample_format = sample_format;
frame->color = *color;
frame->x = x;
frame->y = y;
memcpy (frame->pixel, pixel, babl_format_get_bytes_per_pixel (sample_format));
gimp_color_frame_update (frame);
}
/**
* gimp_color_frame_set_invalid:
* @frame: The #GimpColorFrame.
*
* Tells the #GimpColorFrame that the current sample is invalid. All labels
* visible for the current color space will show "n/a" (not available).
*
* There is no special API for setting the frame to "valid" again because
* this happens automatically when calling gimp_color_frame_set_color().
**/
void
gimp_color_frame_set_invalid (GimpColorFrame *frame)
{
g_return_if_fail (GIMP_IS_COLOR_FRAME (frame));
if (! frame->sample_valid)
return;
frame->sample_valid = FALSE;
gimp_color_frame_update (frame);
}
void
gimp_color_frame_set_color_config (GimpColorFrame *frame,
GimpColorConfig *config)
{
g_return_if_fail (GIMP_IS_COLOR_FRAME (frame));
g_return_if_fail (config == NULL || GIMP_IS_COLOR_CONFIG (config));
if (config != frame->config)
{
if (frame->config)
{
g_signal_handlers_disconnect_by_func (frame->config,
gimp_color_frame_destroy_transform,
frame);
g_object_unref (frame->config);
gimp_color_frame_destroy_transform (frame);
}
frame->config = config;
if (frame->config)
{
g_object_ref (frame->config);
g_signal_connect_swapped (frame->config, "notify",
G_CALLBACK (gimp_color_frame_destroy_transform),
frame);
}
gimp_color_area_set_color_config (GIMP_COLOR_AREA (frame->color_area),
config);
}
}
/* private functions */
static void
gimp_color_frame_combo_callback (GtkWidget *widget,
GimpColorFrame *frame)
{
gint value;
if (gimp_int_combo_box_get_active (GIMP_INT_COMBO_BOX (widget), &value))
{
frame->pick_mode = value;
gimp_color_frame_update (frame);
g_object_notify (G_OBJECT (frame), "mode");
}
}
static void
gimp_color_frame_update (GimpColorFrame *frame)
{
const gchar *names[GIMP_COLOR_FRAME_ROWS] = { NULL, };
gchar **values = NULL;
gboolean has_alpha;
gint i;
has_alpha = babl_format_has_alpha (frame->sample_format);
if (frame->sample_valid)
{
gchar str[16];
gimp_color_area_set_color (GIMP_COLOR_AREA (frame->color_area),
&frame->color);
g_snprintf (str, sizeof (str), "%d", frame->x);
gtk_label_set_text (GTK_LABEL (frame->coords_label_x), str);
g_snprintf (str, sizeof (str), "%d", frame->y);
gtk_label_set_text (GTK_LABEL (frame->coords_label_y), str);
}
else
{
/* TRANSLATORS: n/a for Not Available. */
gtk_label_set_text (GTK_LABEL (frame->coords_label_x), C_("Coordinates", "n/a"));
/* TRANSLATORS: n/a for Not Available. */
gtk_label_set_text (GTK_LABEL (frame->coords_label_y), C_("Coordinates", "n/a"));
}
switch (frame->pick_mode)
{
case GIMP_COLOR_PICK_MODE_PIXEL:
{
GimpImageBaseType base_type;
base_type = gimp_babl_format_get_base_type (frame->sample_format);
if (frame->sample_valid)
{
const Babl *print_format = NULL;
guchar print_pixel[32];
switch (gimp_babl_format_get_precision (frame->sample_format))
{
case GIMP_PRECISION_U8_GAMMA:
if (babl_format_is_palette (frame->sample_format))
{
print_format = gimp_babl_format (GIMP_RGB,
GIMP_PRECISION_U8_GAMMA,
has_alpha);
break;
}
/* else fall thru */
case GIMP_PRECISION_U8_LINEAR:
case GIMP_PRECISION_U16_LINEAR:
case GIMP_PRECISION_U16_GAMMA:
case GIMP_PRECISION_U32_LINEAR:
case GIMP_PRECISION_U32_GAMMA:
case GIMP_PRECISION_FLOAT_LINEAR:
case GIMP_PRECISION_FLOAT_GAMMA:
case GIMP_PRECISION_DOUBLE_LINEAR:
case GIMP_PRECISION_DOUBLE_GAMMA:
print_format = frame->sample_format;
break;
case GIMP_PRECISION_HALF_GAMMA:
print_format = gimp_babl_format (base_type,
GIMP_PRECISION_FLOAT_GAMMA,
has_alpha);
break;
case GIMP_PRECISION_HALF_LINEAR:
print_format = gimp_babl_format (base_type,
GIMP_PRECISION_FLOAT_LINEAR,
has_alpha);
break;
}
if (frame->sample_average)
{
/* FIXME: this is broken: can't use the averaged sRGB GimpRGB
* value for displaying pixel values when color management
* is enabled
*/
gimp_rgba_get_pixel (&frame->color, print_format, print_pixel);
}
else
{
babl_process (babl_fish (frame->sample_format, print_format),
frame->pixel, print_pixel, 1);
}
values = gimp_babl_print_pixel (print_format, print_pixel);
}
if (base_type == GIMP_GRAY)
{
/* TRANSLATORS: V for Value (grayscale) */
names[0] = C_("Grayscale", "V:");
if (has_alpha)
/* TRANSLATORS: A for Alpha (color transparency) */
names[1] = C_("Alpha channel", "A:");
}
else
{
/* TRANSLATORS: R for Red (RGB) */
names[0] = C_("RGB", "R:");
/* TRANSLATORS: G for Green (RGB) */
names[1] = C_("RGB", "G:");
/* TRANSLATORS: B for Blue (RGB) */
names[2] = C_("RGB", "B:");
if (has_alpha)
/* TRANSLATORS: A for Alpha (color transparency) */
names[3] = C_("Alpha channel", "A:");
if (babl_format_is_palette (frame->sample_format))
{
/* TRANSLATORS: Index of the color in the palette. */
names[4] = C_("Indexed color", "Index:");
if (frame->sample_valid)
{
gchar **v = g_new0 (gchar *, 6);
gchar **tmp = values;
memcpy (v, values, 4 * sizeof (gchar *));
values = v;
g_free (tmp);
if (! frame->sample_average)
values[4] = g_strdup_printf ("%d", frame->pixel[0]);
}
}
}
}
break;
case GIMP_COLOR_PICK_MODE_RGB_PERCENT:
case GIMP_COLOR_PICK_MODE_RGB_U8:
/* TRANSLATORS: R for Red (RGB) */
names[0] = C_("RGB", "R:");
/* TRANSLATORS: G for Green (RGB) */
names[1] = C_("RGB", "G:");
/* TRANSLATORS: B for Blue (RGB) */
names[2] = C_("RGB", "B:");
if (has_alpha)
/* TRANSLATORS: A for Alpha (color transparency) */
names[3] = C_("Alpha channel", "A:");
/* TRANSLATORS: Hex for Hexadecimal (representation of a color) */
names[4] = C_("Color representation", "Hex:");
if (frame->sample_valid)
{
guchar r, g, b, a;
values = g_new0 (gchar *, 6);
gimp_rgba_get_uchar (&frame->color, &r, &g, &b, &a);
if (frame->pick_mode == GIMP_COLOR_PICK_MODE_RGB_PERCENT)
{
values[0] = g_strdup_printf ("%.01f %%", frame->color.r * 100.0);
values[1] = g_strdup_printf ("%.01f %%", frame->color.g * 100.0);
values[2] = g_strdup_printf ("%.01f %%", frame->color.b * 100.0);
values[3] = g_strdup_printf ("%.01f %%", frame->color.a * 100.0);
}
else
{
values[0] = g_strdup_printf ("%d", r);
values[1] = g_strdup_printf ("%d", g);
values[2] = g_strdup_printf ("%d", b);
values[3] = g_strdup_printf ("%d", a);
}
values[4] = g_strdup_printf ("%.2x%.2x%.2x", r, g, b);
}
break;
case GIMP_COLOR_PICK_MODE_HSV:
/* TRANSLATORS: H for Hue (HSV color space) */
names[0] = C_("HSV color space", "H:");
/* TRANSLATORS: S for Saturation (HSV color space) */
names[1] = C_("HSV color space", "S:");
/* TRANSLATORS: V for Value (HSV color space) */
names[2] = C_("HSV color space", "V:");
if (has_alpha)
/* TRANSLATORS: A for Alpha (color transparency) */
names[3] = C_("Alpha channel", "A:");
if (frame->sample_valid)
{
GimpHSV hsv;
gimp_rgb_to_hsv (&frame->color, &hsv);
hsv.a = frame->color.a;
values = g_new0 (gchar *, 5);
values[0] = g_strdup_printf ("%.01f \302\260", hsv.h * 360.0);
values[1] = g_strdup_printf ("%.01f %%", hsv.s * 100.0);
values[2] = g_strdup_printf ("%.01f %%", hsv.v * 100.0);
values[3] = g_strdup_printf ("%.01f %%", hsv.a * 100.0);
}
break;
case GIMP_COLOR_PICK_MODE_LCH:
/* TRANSLATORS: L for Lightness (LCH color space) */
names[0] = C_("LCH color space", "L*:");
/* TRANSLATORS: C for Chroma (LCH color space) */
names[1] = C_("LCH color space", "C*:");
/* TRANSLATORS: H for Hue angle (LCH color space) */
names[2] = C_("LCH color space", "h\302\260:");
if (has_alpha)
/* TRANSLATORS: A for Alpha (color transparency) */
names[3] = C_("Alpha channel", "A:");
if (frame->sample_valid)
{
static const Babl *fish = NULL;
gfloat lch[4];
if (G_UNLIKELY (! fish))
fish = babl_fish (babl_format ("R'G'B'A double"),
babl_format ("CIE LCH(ab) alpha float"));
babl_process (fish, &frame->color, lch, 1);
values = g_new0 (gchar *, 5);
values[0] = g_strdup_printf ("%.01f ", lch[0]);
values[1] = g_strdup_printf ("%.01f ", lch[1]);
values[2] = g_strdup_printf ("%.01f \302\260", lch[2]);
values[3] = g_strdup_printf ("%.01f %%", lch[3] * 100.0);
}
break;
case GIMP_COLOR_PICK_MODE_LAB:
/* TRANSLATORS: L* for Lightness (Lab color space) */
names[0] = C_("Lab color space", "L*:");
/* TRANSLATORS: a* color channel in Lab color space */
names[1] = C_("Lab color space", "a*:");
/* TRANSLATORS: b* color channel in Lab color space */
names[2] = C_("Lab color space", "b*:");
if (has_alpha)
/* TRANSLATORS: A for Alpha (color transparency) */
names[3] = C_("Alpha channel", "A:");
if (frame->sample_valid)
{
static const Babl *fish = NULL;
gfloat lab[4];
if (G_UNLIKELY (! fish))
fish = babl_fish (babl_format ("R'G'B'A double"),
babl_format ("CIE Lab alpha float"));
babl_process (fish, &frame->color, lab, 1);
values = g_new0 (gchar *, 5);
values[0] = g_strdup_printf ("%.01f ", lab[0]);
values[1] = g_strdup_printf ("%.01f ", lab[1]);
values[2] = g_strdup_printf ("%.01f ", lab[2]);
values[3] = g_strdup_printf ("%.01f %%", lab[3] * 100.0);
}
break;
case GIMP_COLOR_PICK_MODE_XYY:
/* TRANSLATORS: x from xyY color space */
names[0] = C_("xyY color space", "x:");
/* TRANSLATORS: y from xyY color space */
names[1] = C_("xyY color space", "y:");
/* TRANSLATORS: Y from xyY color space */
names[2] = C_("xyY color space", "Y:");
if (has_alpha)
/* TRANSLATORS: A for Alpha (color transparency) */
names[3] = C_("Alpha channel", "A:");
if (frame->sample_valid)
{
static const Babl *fish = NULL;
gfloat xyY[4];
if (G_UNLIKELY (! fish))
fish = babl_fish (babl_format ("R'G'B'A double"),
babl_format ("CIE xyY alpha float"));
babl_process (fish, &frame->color, xyY, 1);
values = g_new0 (gchar *, 5);
values[0] = g_strdup_printf ("%1.6f ", xyY[0]);
values[1] = g_strdup_printf ("%1.6f ", xyY[1]);
values[2] = g_strdup_printf ("%1.6f ", xyY[2]);
values[3] = g_strdup_printf ("%.01f %%", xyY[3] * 100.0);
}
break;
case GIMP_COLOR_PICK_MODE_CMYK:
/* TRANSLATORS: C for Cyan (CMYK) */
names[0] = C_("CMYK", "C:");
/* TRANSLATORS: M for Magenta (CMYK) */
names[1] = C_("CMYK", "M:");
/* TRANSLATORS: Y for Yellow (CMYK) */
names[2] = C_("CMYK", "Y:");
/* TRANSLATORS: K for Key/black (CMYK) */
names[3] = C_("CMYK", "K:");
if (has_alpha)
/* TRANSLATORS: A for Alpha (color transparency) */
names[4] = C_("Alpha channel", "A:");
if (frame->sample_valid)
{
GimpCMYK cmyk;
if (! frame->transform)
gimp_color_frame_create_transform (frame);
if (frame->transform)
{
gdouble rgb_values[3];
gdouble cmyk_values[4];
rgb_values[0] = frame->color.r;
rgb_values[1] = frame->color.g;
rgb_values[2] = frame->color.b;
gimp_color_transform_process_pixels (frame->transform,
babl_format ("R'G'B' double"),
rgb_values,
babl_format ("CMYK double"),
cmyk_values,
1);
cmyk.c = cmyk_values[0] / 100.0;
cmyk.m = cmyk_values[1] / 100.0;
cmyk.y = cmyk_values[2] / 100.0;
cmyk.k = cmyk_values[3] / 100.0;
}
else
{
gimp_rgb_to_cmyk (&frame->color, 1.0, &cmyk);
}
cmyk.a = frame->color.a;
values = g_new0 (gchar *, 6);
values[0] = g_strdup_printf ("%.01f %%", cmyk.c * 100.0);
values[1] = g_strdup_printf ("%.01f %%", cmyk.m * 100.0);
values[2] = g_strdup_printf ("%.01f %%", cmyk.y * 100.0);
values[3] = g_strdup_printf ("%.01f %%", cmyk.k * 100.0);
values[4] = g_strdup_printf ("%.01f %%", cmyk.a * 100.0);
}
break;
}
for (i = 0; i < GIMP_COLOR_FRAME_ROWS; i++)
{
if (names[i])
{
gtk_label_set_text (GTK_LABEL (frame->name_labels[i]), names[i]);
if (frame->sample_valid && values[i])
gtk_label_set_text (GTK_LABEL (frame->value_labels[i]), values[i]);
else
gtk_label_set_text (GTK_LABEL (frame->value_labels[i]),
C_("Color value", "n/a"));
}
else
{
gtk_label_set_text (GTK_LABEL (frame->name_labels[i]), " ");
gtk_label_set_text (GTK_LABEL (frame->value_labels[i]), " ");
}
}
g_strfreev (values);
}
static void
gimp_color_frame_create_transform (GimpColorFrame *frame)
{
if (frame->config)
{
GimpColorProfile *cmyk_profile;
cmyk_profile = gimp_color_config_get_cmyk_color_profile (frame->config,
NULL);
if (cmyk_profile)
{
static GimpColorProfile *rgb_profile = NULL;
if (G_UNLIKELY (! rgb_profile))
rgb_profile = gimp_color_profile_new_rgb_srgb ();
frame->transform =
gimp_color_transform_new (rgb_profile,
babl_format ("R'G'B' double"),
cmyk_profile,
babl_format ("CMYK double"),
GIMP_COLOR_RENDERING_INTENT_PERCEPTUAL,
GIMP_COLOR_TRANSFORM_FLAGS_NOOPTIMIZE |
GIMP_COLOR_TRANSFORM_FLAGS_BLACK_POINT_COMPENSATION);
}
}
}
static void
gimp_color_frame_destroy_transform (GimpColorFrame *frame)
{
g_clear_object (&frame->transform);
gimp_color_frame_update (frame);
}
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