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gimp/libgimpwidgets/gimpcolorscales.c

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/* LIBGIMP - The GIMP Library
* Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
*
* gimpcolorscales.c
* Copyright (C) 2002 Michael Natterer <mitch@gimp.org>
*
* based on color_notebook module
* Copyright (C) 1998 Austin Donnelly <austin@greenend.org.uk>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <string.h>
#include <gtk/gtk.h>
#include "libgimpcolor/gimpcolor.h"
#include "libgimpmath/gimpmath.h"
#include "gimpwidgetstypes.h"
#include "gimpcolorscale.h"
#include "gimpcolorscales.h"
#include "gimpcolorhexentry.h"
#include "gimpwidgets.h"
#include "libgimp/libgimp-intl.h"
#define GIMP_COLOR_SCALES_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GIMP_TYPE_COLOR_SCALES, GimpColorScalesClass))
#define GIMP_IS_COLOR_SCALES_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GIMP_TYPE_COLOR_SCALES))
#define GIMP_COLOR_SCALES_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GIMP_TYPE_COLOR_SCALES, GimpColorScalesClass))
typedef struct _GimpColorScalesClass GimpColorScalesClass;
struct _GimpColorScales
{
GimpColorSelector parent_instance;
GtkWidget *toggles[7];
GtkWidget *sliders[7];
GtkObject *slider_data[7];
GtkWidget *hex_entry;
};
struct _GimpColorScalesClass
{
GimpColorSelectorClass parent_class;
};
static void gimp_color_scales_class_init (GimpColorScalesClass *klass);
static void gimp_color_scales_init (GimpColorScales *scales);
static void gimp_color_scales_togg_sensitive (GimpColorSelector *selector,
gboolean sensitive);
static void gimp_color_scales_togg_visible (GimpColorSelector *selector,
gboolean visible);
static void gimp_color_scales_set_show_alpha (GimpColorSelector *selector,
gboolean show_alpha);
static void gimp_color_scales_set_color (GimpColorSelector *selector,
const GimpRGB *rgb,
const GimpHSV *hsv);
static void gimp_color_scales_set_channel (GimpColorSelector *selector,
GimpColorSelectorChannel channel);
static void gimp_color_scales_update_scales (GimpColorScales *scales,
gint skip);
static void gimp_color_scales_toggle_update (GtkWidget *widget,
GimpColorScales *scales);
static void gimp_color_scales_scale_update (GtkAdjustment *adjustment,
GimpColorScales *scales);
static void gimp_color_scales_entry_changed (GimpColorHexEntry *entry,
GimpColorScales *scales);
static GimpColorSelectorClass *parent_class = NULL;
GType
gimp_color_scales_get_type (void)
{
static GType scales_type = 0;
if (! scales_type)
{
static const GTypeInfo scales_info =
{
sizeof (GimpColorScalesClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) gimp_color_scales_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GimpColorScales),
0, /* n_preallocs */
(GInstanceInitFunc) gimp_color_scales_init,
};
scales_type = g_type_register_static (GIMP_TYPE_COLOR_SELECTOR,
"GimpColorScales",
&scales_info, 0);
}
return scales_type;
}
static void
gimp_color_scales_class_init (GimpColorScalesClass *klass)
{
GimpColorSelectorClass *selector_class = GIMP_COLOR_SELECTOR_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
selector_class->name = _("Scales");
selector_class->help_id = "gimp-colorselector-scales";
selector_class->stock_id = GIMP_STOCK_TOOL_OPTIONS;
selector_class->set_toggles_visible = gimp_color_scales_togg_visible;
selector_class->set_toggles_sensitive = gimp_color_scales_togg_sensitive;
selector_class->set_show_alpha = gimp_color_scales_set_show_alpha;
selector_class->set_color = gimp_color_scales_set_color;
selector_class->set_channel = gimp_color_scales_set_channel;
}
static void
gimp_color_scales_init (GimpColorScales *scales)
{
GimpColorSelector *selector = GIMP_COLOR_SELECTOR (scales);
GtkWidget *table;
GtkWidget *hbox;
GtkWidget *label;
GSList *group;
gint i;
static const gchar *toggle_titles[] =
{
N_("_H"),
N_("_S"),
N_("_V"),
N_("_R"),
N_("_G"),
N_("_B"),
N_("_A")
};
static const gchar *slider_tips[7] =
{
N_("Hue"),
N_("Saturation"),
N_("Value"),
N_("Red"),
N_("Green"),
N_("Blue"),
N_("Alpha")
};
static gdouble slider_initial_vals[] = { 0, 0, 0, 0, 0, 0, 0 };
static gdouble slider_max_vals[] = { 360, 100, 100, 255, 255, 255, 100 };
static gdouble slider_incs[] = { 30, 10, 10, 16, 16, 16, 10 };
/* don't needs the toggles for our own operation */
selector->toggles_visible = FALSE;
table = gtk_table_new (7, 4, FALSE);
gtk_table_set_row_spacings (GTK_TABLE (table), 1);
gtk_table_set_row_spacing (GTK_TABLE (table), 2, 3); /* hsv <-> rgb */
gtk_table_set_row_spacing (GTK_TABLE (table), 5, 3); /* rgb <-> alpha */
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 (scales), table, FALSE, FALSE, 0);
gtk_widget_show (table);
group = NULL;
for (i = 0; i < 7; i++)
{
if (i == 6)
{
scales->toggles[i] = NULL;
}
else
{
scales->toggles[i] = gtk_radio_button_new (group);
group = gtk_radio_button_get_group (GTK_RADIO_BUTTON (scales->toggles[i]));
gtk_table_attach (GTK_TABLE (table), scales->toggles[i],
0, 1, i, i + 1,
GTK_SHRINK, GTK_EXPAND, 0, 0);
if (selector->toggles_visible)
gtk_widget_show (scales->toggles[i]);
gimp_help_set_help_data (scales->toggles[i],
gettext (slider_tips[i]), NULL);
g_signal_connect (scales->toggles[i], "toggled",
G_CALLBACK (gimp_color_scales_toggle_update),
scales);
}
scales->slider_data[i] =
gimp_color_scale_entry_new (GTK_TABLE (table), 1, i,
gettext (toggle_titles[i]),
-1, -1,
slider_initial_vals[i],
0.0, slider_max_vals[i],
1.0, slider_incs[i],
0,
gettext (slider_tips[i]),
NULL);
scales->sliders[i] = GIMP_SCALE_ENTRY_SCALE (scales->slider_data[i]);
gimp_color_scale_set_channel (GIMP_COLOR_SCALE (scales->sliders[i]), i);
g_signal_connect (scales->slider_data[i], "value_changed",
G_CALLBACK (gimp_color_scales_scale_update),
scales);
}
/* The hex triplet entry */
hbox = gtk_hbox_new (FALSE, 6);
gtk_box_pack_end (GTK_BOX (scales), hbox, FALSE, FALSE, 0);
gtk_widget_show (hbox);
scales->hex_entry = gimp_color_hex_entry_new ();
gimp_help_set_help_data (scales->hex_entry,
_("Hexadecimal color notation "
"as used in HTML and CSS"), NULL);
gtk_box_pack_end (GTK_BOX (hbox), scales->hex_entry, TRUE, TRUE, 0);
gtk_widget_show (scales->hex_entry);
label = gtk_label_new_with_mnemonic (_("HTML _Notation:"));
gtk_label_set_mnemonic_widget (GTK_LABEL (label), scales->hex_entry);
gtk_box_pack_end (GTK_BOX (hbox), label, FALSE, FALSE, 0);
gtk_widget_show (label);
g_signal_connect (scales->hex_entry, "color_changed",
G_CALLBACK (gimp_color_scales_entry_changed),
scales);
}
static void
gimp_color_scales_togg_sensitive (GimpColorSelector *selector,
gboolean sensitive)
{
GimpColorScales *scales = GIMP_COLOR_SCALES (selector);
gint i;
for (i = 0; i < 6; i++)
gtk_widget_set_sensitive (scales->toggles[i], sensitive);
}
static void
gimp_color_scales_togg_visible (GimpColorSelector *selector,
gboolean visible)
{
GimpColorScales *scales = GIMP_COLOR_SCALES (selector);
gint i;
for (i = 0; i < 6; i++)
{
if (visible)
gtk_widget_show (scales->toggles[i]);
else
gtk_widget_hide (scales->toggles[i]);
}
}
static void
gimp_color_scales_set_show_alpha (GimpColorSelector *selector,
gboolean show_alpha)
{
GimpColorScales *scales = GIMP_COLOR_SCALES (selector);
GtkWidget *label;
GtkWidget *scale;
GtkWidget *spin;
label = GIMP_SCALE_ENTRY_LABEL (scales->slider_data[6]);
scale = GIMP_SCALE_ENTRY_SCALE (scales->slider_data[6]);
spin = GIMP_SCALE_ENTRY_SPINBUTTON (scales->slider_data[6]);
if (show_alpha)
{
gtk_widget_show (label);
gtk_widget_show (scale);
gtk_widget_show (spin);
}
else
{
gtk_widget_hide (label);
gtk_widget_hide (scale);
gtk_widget_hide (spin);
}
}
static void
gimp_color_scales_set_color (GimpColorSelector *selector,
const GimpRGB *rgb,
const GimpHSV *hsv)
{
GimpColorScales *scales = GIMP_COLOR_SCALES (selector);
gimp_color_scales_update_scales (scales, -1);
}
static void
gimp_color_scales_set_channel (GimpColorSelector *selector,
GimpColorSelectorChannel channel)
{
GimpColorScales *scales = GIMP_COLOR_SCALES (selector);
if (channel >= 0 && channel <= 7)
{
g_signal_handlers_block_by_func (scales->toggles[channel],
gimp_color_scales_toggle_update,
scales);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (scales->toggles[channel]),
TRUE);
g_signal_handlers_unblock_by_func (scales->toggles[channel],
gimp_color_scales_toggle_update,
scales);
}
}
static void
gimp_color_scales_update_scales (GimpColorScales *scales,
gint skip)
{
GimpColorSelector *selector = GIMP_COLOR_SELECTOR (scales);
gint values[7];
gint i;
values[GIMP_COLOR_SELECTOR_HUE] = ROUND (selector->hsv.h * 360.0);
values[GIMP_COLOR_SELECTOR_SATURATION] = ROUND (selector->hsv.s * 100.0);
values[GIMP_COLOR_SELECTOR_VALUE] = ROUND (selector->hsv.v * 100.0);
values[GIMP_COLOR_SELECTOR_RED] = ROUND (selector->rgb.r * 255.0);
values[GIMP_COLOR_SELECTOR_GREEN] = ROUND (selector->rgb.g * 255.0);
values[GIMP_COLOR_SELECTOR_BLUE] = ROUND (selector->rgb.b * 255.0);
values[GIMP_COLOR_SELECTOR_ALPHA] = ROUND (selector->rgb.a * 100.0);
for (i = 0; i < 7; i++)
{
if (i != skip)
{
g_signal_handlers_block_by_func (scales->slider_data[i],
gimp_color_scales_scale_update,
scales);
gtk_adjustment_set_value (GTK_ADJUSTMENT (scales->slider_data[i]),
values[i]);
g_signal_handlers_unblock_by_func (scales->slider_data[i],
gimp_color_scales_scale_update,
scales);
}
gimp_color_scale_set_color (GIMP_COLOR_SCALE (scales->sliders[i]),
&selector->rgb, &selector->hsv);
}
gimp_color_hex_entry_set_color (GIMP_COLOR_HEX_ENTRY (scales->hex_entry),
&selector->rgb);
}
static void
gimp_color_scales_toggle_update (GtkWidget *widget,
GimpColorScales *scales)
{
GimpColorSelector *selector = GIMP_COLOR_SELECTOR (scales);
if (GTK_TOGGLE_BUTTON (widget)->active)
{
gint i;
for (i = 0; i < 6; i++)
if (widget == scales->toggles[i])
{
selector->channel = (GimpColorSelectorChannel) i;
break;
}
gimp_color_selector_channel_changed (selector);
}
}
static void
gimp_color_scales_scale_update (GtkAdjustment *adjustment,
GimpColorScales *scales)
{
GimpColorSelector *selector = GIMP_COLOR_SELECTOR (scales);
gint i;
for (i = 0; i < 7; i++)
if (scales->slider_data[i] == GTK_OBJECT (adjustment))
break;
switch (i)
{
case GIMP_COLOR_SELECTOR_HUE:
selector->hsv.h = GTK_ADJUSTMENT (adjustment)->value / 360.0;
break;
case GIMP_COLOR_SELECTOR_SATURATION:
selector->hsv.s = GTK_ADJUSTMENT (adjustment)->value / 100.0;
break;
case GIMP_COLOR_SELECTOR_VALUE:
selector->hsv.v = GTK_ADJUSTMENT (adjustment)->value / 100.0;
break;
case GIMP_COLOR_SELECTOR_RED:
selector->rgb.r = GTK_ADJUSTMENT (adjustment)->value / 255.0;
break;
case GIMP_COLOR_SELECTOR_GREEN:
selector->rgb.g = GTK_ADJUSTMENT (adjustment)->value / 255.0;
break;
case GIMP_COLOR_SELECTOR_BLUE:
selector->rgb.b = GTK_ADJUSTMENT (adjustment)->value / 255.0;
break;
case GIMP_COLOR_SELECTOR_ALPHA:
selector->hsv.a = selector->rgb.a =
GTK_ADJUSTMENT (adjustment)->value / 100.0;
break;
}
if ((i >= GIMP_COLOR_SELECTOR_HUE) && (i <= GIMP_COLOR_SELECTOR_VALUE))
{
gimp_hsv_to_rgb (&selector->hsv, &selector->rgb);
}
else if ((i >= GIMP_COLOR_SELECTOR_RED) && (i <= GIMP_COLOR_SELECTOR_BLUE))
{
gimp_rgb_to_hsv (&selector->rgb, &selector->hsv);
}
gimp_color_scales_update_scales (scales, i);
gimp_color_selector_color_changed (selector);
}
static void
gimp_color_scales_entry_changed (GimpColorHexEntry *entry,
GimpColorScales *scales)
{
GimpColorSelector *selector = GIMP_COLOR_SELECTOR (scales);
gimp_color_hex_entry_get_color (entry, &selector->rgb);
gimp_rgb_to_hsv (&selector->rgb, &selector->hsv);
gimp_color_scales_update_scales (scales, -1);
gimp_color_selector_color_changed (selector);
}
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