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gimp/app/widgets/gimpcolorframe.c

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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 <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <gegl.h>
#include <gtk/gtk.h>
#include "libgimpmath/gimpmath.h"
#include "libgimpcolor/gimpcolor.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"
enum
{
PROP_0,
PROP_MODE,
PROP_HAS_NUMBER,
PROP_NUMBER,
PROP_HAS_COLOR_AREA
};
/* local function prototypes */
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_menu_callback (GtkWidget *widget,
GimpColorFrame *frame);
static void gimp_color_frame_update (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->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_FRAME_MODE,
GIMP_COLOR_FRAME_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));
}
static void
gimp_color_frame_init (GimpColorFrame *frame)
{
GtkWidget *vbox;
GtkWidget *vbox2;
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);
frame->menu = gimp_enum_combo_box_new (GIMP_TYPE_COLOR_FRAME_MODE);
gtk_frame_set_label_widget (GTK_FRAME (frame), frame->menu);
gtk_widget_show (frame->menu);
g_signal_connect (frame->menu, "changed",
G_CALLBACK (gimp_color_frame_menu_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],
FALSE, FALSE, 0);
gtk_widget_show (frame->value_labels[i]);
}
}
static void
gimp_color_frame_finalize (GObject *object)
{
GimpColorFrame *frame = GIMP_COLOR_FRAME (object);
if (frame->number_layout)
{
g_object_unref (frame->number_layout);
frame->number_layout = NULL;
}
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->frame_mode);
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;
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_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;
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);
if (frame->number_layout)
{
g_object_unref (frame->number_layout);
frame->number_layout = NULL;
}
}
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 menu_allocation;
GtkAllocation color_area_allocation;
cairo_t *cr;
gchar buf[8];
gint w, h;
gdouble scale;
gtk_widget_get_allocation (widget, &allocation);
gtk_widget_get_allocation (frame->menu, &menu_allocation);
gtk_widget_get_allocation (frame->color_area, &color_area_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 -
menu_allocation.height -
color_area_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 +
menu_allocation.height / 2.0 +
color_area_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 @mode. Calling this function does
* the same as selecting the @mode from the frame's #GtkOptionMenu.
**/
void
gimp_color_frame_set_mode (GimpColorFrame *frame,
GimpColorFrameMode mode)
{
g_return_if_fail (GIMP_IS_COLOR_FRAME (frame));
gimp_int_combo_box_set_active (GIMP_INT_COMBO_BOX (frame->menu), mode);
g_object_notify (G_OBJECT (frame), "mode");
}
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");
}
}
/**
* 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.
*
* 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)
{
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 &&
gimp_rgba_distance (&frame->color, color) < 0.0001)
{
frame->color = *color;
return;
}
frame->sample_valid = TRUE;
frame->sample_average = sample_average;
frame->sample_format = sample_format;
frame->color = *color;
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);
}
/* private functions */
static void
gimp_color_frame_menu_callback (GtkWidget *widget,
GimpColorFrame *frame)
{
gint value;
if (gimp_int_combo_box_get_active (GIMP_INT_COMBO_BOX (widget), &value))
{
frame->frame_mode = value;
gimp_color_frame_update (frame);
}
}
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)
{
gimp_color_area_set_color (GIMP_COLOR_AREA (frame->color_area),
&frame->color);
}
switch (frame->frame_mode)
{
case GIMP_COLOR_FRAME_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)
{
names[0] = _("Value:");
if (has_alpha)
names[1] = _("Alpha:");
}
else
{
names[0] = _("Red:");
names[1] = _("Green:");
names[2] = _("Blue:");
if (has_alpha)
names[3] = _("Alpha:");
if (babl_format_is_palette (frame->sample_format))
{
names[4] = _("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_FRAME_MODE_RGB:
names[0] = _("Red:");
names[1] = _("Green:");
names[2] = _("Blue:");
if (has_alpha)
names[3] = _("Alpha:");
if (frame->sample_valid)
{
values = g_new0 (gchar *, 6);
values[0] = g_strdup_printf ("%d %%", ROUND (frame->color.r * 100.0));
values[1] = g_strdup_printf ("%d %%", ROUND (frame->color.g * 100.0));
values[2] = g_strdup_printf ("%d %%", ROUND (frame->color.b * 100.0));
values[3] = g_strdup_printf ("%d %%", ROUND (frame->color.a * 100.0));
}
names[4] = _("Hex:");
if (frame->sample_valid)
{
guchar r, g, b;
gimp_rgb_get_uchar (&frame->color, &r, &g, &b);
values[4] = g_strdup_printf ("%.2x%.2x%.2x", r, g, b);
}
break;
case GIMP_COLOR_FRAME_MODE_HSV:
names[0] = _("Hue:");
names[1] = _("Sat.:");
names[2] = _("Value:");
if (has_alpha)
names[3] = _("Alpha:");
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 ("%d \302\260", ROUND (hsv.h * 360.0));
values[1] = g_strdup_printf ("%d %%", ROUND (hsv.s * 100.0));
values[2] = g_strdup_printf ("%d %%", ROUND (hsv.v * 100.0));
values[3] = g_strdup_printf ("%d %%", ROUND (hsv.a * 100.0));
}
break;
case GIMP_COLOR_FRAME_MODE_CMYK:
names[0] = _("Cyan:");
names[1] = _("Magenta:");
names[2] = _("Yellow:");
names[3] = _("Black:");
if (has_alpha)
names[4] = _("Alpha:");
if (frame->sample_valid)
{
GimpCMYK cmyk;
gimp_rgb_to_cmyk (&frame->color, 1.0, &cmyk);
cmyk.a = frame->color.a;
values = g_new0 (gchar *, 6);
values[0] = g_strdup_printf ("%d %%", ROUND (cmyk.c * 100.0));
values[1] = g_strdup_printf ("%d %%", ROUND (cmyk.m * 100.0));
values[2] = g_strdup_printf ("%d %%", ROUND (cmyk.y * 100.0));
values[3] = g_strdup_printf ("%d %%", ROUND (cmyk.k * 100.0));
values[4] = g_strdup_printf ("%d %%", ROUND (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]), _("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);
}
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