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gimp/app/tools/gimpcolorbalancetool.c

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/* The GIMP -- an 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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <gtk/gtk.h>
#include "libgimpcolor/gimpcolor.h"
#include "libgimpmath/gimpmath.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "tools-types.h"
#include "base/color-balance.h"
#include "core/gimpdrawable.h"
#include "core/gimpimage.h"
#include "core/gimpimagemap.h"
#include "widgets/gimphelp-ids.h"
#include "display/gimpdisplay.h"
#include "gimpcolorbalancetool.h"
#include "gimpimagemapoptions.h"
#include "gimp-intl.h"
#define CYAN_RED (1 << 0)
#define MAGENTA_GREEN (1 << 1)
#define YELLOW_BLUE (1 << 2)
#define PRESERVE (1 << 3)
#define ALL (CYAN_RED | MAGENTA_GREEN | YELLOW_BLUE | PRESERVE)
/* local function prototypes */
static void gimp_color_balance_tool_finalize (GObject *object);
static gboolean gimp_color_balance_tool_initialize (GimpTool *tool,
GimpDisplay *display,
GError **error);
static void gimp_color_balance_tool_map (GimpImageMapTool *im_tool);
static void gimp_color_balance_tool_dialog (GimpImageMapTool *im_tool);
static void gimp_color_balance_tool_reset (GimpImageMapTool *im_tool);
static void color_balance_update (GimpColorBalanceTool *cb_tool,
gint update);
static void color_balance_range_callback (GtkWidget *widget,
GimpColorBalanceTool *cb_tool);
static void color_balance_range_reset_callback (GtkWidget *widget,
GimpColorBalanceTool *cb_tool);
static void color_balance_preserve_update (GtkWidget *widget,
GimpColorBalanceTool *cb_tool);
static void color_balance_cr_adjustment_update (GtkAdjustment *adj,
GimpColorBalanceTool *cb_tool);
static void color_balance_mg_adjustment_update (GtkAdjustment *adj,
GimpColorBalanceTool *cb_tool);
static void color_balance_yb_adjustment_update (GtkAdjustment *adj,
GimpColorBalanceTool *cb_tool);
G_DEFINE_TYPE (GimpColorBalanceTool, gimp_color_balance_tool,
GIMP_TYPE_IMAGE_MAP_TOOL)
#define parent_class gimp_color_balance_tool_parent_class
void
gimp_color_balance_tool_register (GimpToolRegisterCallback callback,
gpointer data)
{
(* callback) (GIMP_TYPE_COLOR_BALANCE_TOOL,
GIMP_TYPE_IMAGE_MAP_OPTIONS, NULL,
0,
"gimp-color-balance-tool",
_("Color Balance"),
_("Color Balance Tool: Adjust color distribution"),
N_("Color _Balance..."), NULL,
NULL, GIMP_HELP_TOOL_COLOR_BALANCE,
GIMP_STOCK_TOOL_COLOR_BALANCE,
data);
}
static void
gimp_color_balance_tool_class_init (GimpColorBalanceToolClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GimpToolClass *tool_class = GIMP_TOOL_CLASS (klass);
GimpImageMapToolClass *im_tool_class = GIMP_IMAGE_MAP_TOOL_CLASS (klass);
object_class->finalize = gimp_color_balance_tool_finalize;
tool_class->initialize = gimp_color_balance_tool_initialize;
im_tool_class->shell_desc = _("Adjust Color Balance");
im_tool_class->map = gimp_color_balance_tool_map;
im_tool_class->dialog = gimp_color_balance_tool_dialog;
im_tool_class->reset = gimp_color_balance_tool_reset;
}
static void
gimp_color_balance_tool_init (GimpColorBalanceTool *cb_tool)
{
cb_tool->color_balance = g_new0 (ColorBalance, 1);
cb_tool->transfer_mode = GIMP_MIDTONES;
color_balance_init (cb_tool->color_balance);
}
static void
gimp_color_balance_tool_finalize (GObject *object)
{
GimpColorBalanceTool *cb_tool = GIMP_COLOR_BALANCE_TOOL (object);
if (cb_tool->color_balance)
{
g_free (cb_tool->color_balance);
cb_tool->color_balance = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static gboolean
gimp_color_balance_tool_initialize (GimpTool *tool,
GimpDisplay *display,
GError **error)
{
GimpColorBalanceTool *cb_tool = GIMP_COLOR_BALANCE_TOOL (tool);
GimpDrawable *drawable;
drawable = gimp_image_active_drawable (display->image);
if (! drawable)
return FALSE;
if (! gimp_drawable_is_rgb (drawable))
{
g_set_error (error, 0, 0,
_("Color Balance operates only on RGB color layers."));
return FALSE;
}
color_balance_init (cb_tool->color_balance);
cb_tool->transfer_mode = GIMP_MIDTONES;
GIMP_TOOL_CLASS (parent_class)->initialize (tool, display, error);
color_balance_update (cb_tool, ALL);
return TRUE;
}
static void
gimp_color_balance_tool_map (GimpImageMapTool *im_tool)
{
GimpColorBalanceTool *cb_tool = GIMP_COLOR_BALANCE_TOOL (im_tool);
color_balance_create_lookup_tables (cb_tool->color_balance);
gimp_image_map_apply (im_tool->image_map,
(GimpImageMapApplyFunc) color_balance,
cb_tool->color_balance);
}
/**************************/
/* Color Balance dialog */
/**************************/
static GtkAdjustment *
create_levels_scale (const gchar *left,
const gchar *right,
GtkWidget *table,
gint col)
{
GtkWidget *label;
GtkWidget *slider;
GtkWidget *spinbutton;
GtkObject *adj;
label = gtk_label_new (left);
gtk_misc_set_alignment (GTK_MISC (label), 1.0, 0.5);
gtk_table_attach (GTK_TABLE (table), label, 0, 1, col, col + 1,
GTK_SHRINK | GTK_FILL, GTK_SHRINK | GTK_FILL, 0, 0);
gtk_widget_show (label);
spinbutton = gimp_spin_button_new (&adj,
0, -100.0, 100.0, 1.0, 10.0, 0.0, 1.0, 0);
slider = gtk_hscale_new (GTK_ADJUSTMENT (adj));
gtk_scale_set_draw_value (GTK_SCALE (slider), FALSE);
gtk_range_set_update_policy (GTK_RANGE (slider), GTK_UPDATE_CONTINUOUS);
gtk_widget_set_size_request (slider, 100, -1);
gtk_table_attach_defaults (GTK_TABLE (table), slider, 1, 2, col, col + 1);
gtk_widget_show (slider);
label = gtk_label_new (right);
gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
gtk_table_attach (GTK_TABLE (table), label, 2, 3, col, col + 1,
GTK_SHRINK | GTK_FILL, GTK_SHRINK | GTK_FILL, 0, 0);
gtk_widget_show (label);
gtk_table_attach (GTK_TABLE (table), spinbutton, 3, 4, col, col + 1,
GTK_SHRINK | GTK_FILL, GTK_SHRINK | GTK_FILL, 0, 0);
gtk_widget_show (spinbutton);
return GTK_ADJUSTMENT (adj);
}
static void
gimp_color_balance_tool_dialog (GimpImageMapTool *im_tool)
{
GimpColorBalanceTool *cb_tool = GIMP_COLOR_BALANCE_TOOL (im_tool);
GtkWidget *vbox;
GtkWidget *hbox;
GtkWidget *table;
GtkWidget *toggle;
GtkWidget *button;
GtkWidget *frame;
frame = gimp_enum_radio_frame_new (GIMP_TYPE_TRANSFER_MODE,
gtk_label_new (_("Select Range to Adjust")),
G_CALLBACK (color_balance_range_callback),
cb_tool,
&toggle);
gtk_box_pack_start (GTK_BOX (im_tool->main_vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
frame = gimp_frame_new (_("Adjust Color Levels"));
gtk_box_pack_start (GTK_BOX (im_tool->main_vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
vbox = gtk_vbox_new (FALSE, 4);
gtk_container_add (GTK_CONTAINER (frame), vbox);
gtk_widget_show (vbox);
/* The table containing sliders */
table = gtk_table_new (3, 4, FALSE);
gtk_table_set_col_spacings (GTK_TABLE (table), 4);
gtk_table_set_row_spacings (GTK_TABLE (table), 2);
gtk_box_pack_start (GTK_BOX (vbox), table, FALSE, FALSE, 0);
gtk_widget_show (table);
cb_tool->cyan_red_adj =
create_levels_scale (_("Cyan"), _("Red"), table, 0);
g_signal_connect (cb_tool->cyan_red_adj, "value-changed",
G_CALLBACK (color_balance_cr_adjustment_update),
cb_tool);
cb_tool->magenta_green_adj =
create_levels_scale (_("Magenta"), _("Green"), table, 1);
g_signal_connect (cb_tool->magenta_green_adj, "value-changed",
G_CALLBACK (color_balance_mg_adjustment_update),
cb_tool);
cb_tool->yellow_blue_adj =
create_levels_scale (_("Yellow"), _("Blue"), table, 2);
g_signal_connect (cb_tool->yellow_blue_adj, "value-changed",
G_CALLBACK (color_balance_yb_adjustment_update),
cb_tool);
hbox = gtk_hbox_new (FALSE, 6);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
gtk_widget_show (hbox);
button = gtk_button_new_with_mnemonic (_("R_eset Range"));
gtk_box_pack_end (GTK_BOX (hbox), button, FALSE, FALSE, 0);
gtk_widget_show (button);
g_signal_connect (button, "clicked",
G_CALLBACK (color_balance_range_reset_callback),
cb_tool);
cb_tool->preserve_toggle =
gtk_check_button_new_with_mnemonic (_("Preserve _luminosity"));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (cb_tool->preserve_toggle),
cb_tool->color_balance->preserve_luminosity);
gtk_box_pack_end (GTK_BOX (im_tool->main_vbox), cb_tool->preserve_toggle,
FALSE, FALSE, 0);
gtk_widget_show (cb_tool->preserve_toggle);
g_signal_connect (cb_tool->preserve_toggle, "toggled",
G_CALLBACK (color_balance_preserve_update),
cb_tool);
/* set range after everything is in place */
gimp_int_radio_group_set_active (GTK_RADIO_BUTTON (toggle),
cb_tool->transfer_mode);
}
static void
gimp_color_balance_tool_reset (GimpImageMapTool *im_tool)
{
GimpColorBalanceTool *cb_tool = GIMP_COLOR_BALANCE_TOOL (im_tool);
color_balance_init (cb_tool->color_balance);
color_balance_update (cb_tool, ALL);
}
static void
color_balance_update (GimpColorBalanceTool *cb_tool,
gint update)
{
GimpTransferMode tm;
tm = cb_tool->transfer_mode;
if (update & CYAN_RED)
gtk_adjustment_set_value (cb_tool->cyan_red_adj,
cb_tool->color_balance->cyan_red[tm]);
if (update & MAGENTA_GREEN)
gtk_adjustment_set_value (cb_tool->magenta_green_adj,
cb_tool->color_balance->magenta_green[tm]);
if (update & YELLOW_BLUE)
gtk_adjustment_set_value (cb_tool->yellow_blue_adj,
cb_tool->color_balance->yellow_blue[tm]);
if (update & PRESERVE)
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (cb_tool->preserve_toggle),
cb_tool->color_balance->preserve_luminosity);
}
static void
color_balance_range_callback (GtkWidget *widget,
GimpColorBalanceTool *cb_tool)
{
gimp_radio_button_update (widget, &cb_tool->transfer_mode);
color_balance_update (cb_tool, ALL);
}
static void
color_balance_range_reset_callback (GtkWidget *widget,
GimpColorBalanceTool *cb_tool)
{
color_balance_range_reset (cb_tool->color_balance,
cb_tool->transfer_mode);
color_balance_update (cb_tool, ALL);
gimp_image_map_tool_preview (GIMP_IMAGE_MAP_TOOL (cb_tool));
}
static void
color_balance_preserve_update (GtkWidget *widget,
GimpColorBalanceTool *cb_tool)
{
gboolean active;
active = GTK_TOGGLE_BUTTON (widget)->active;
if (cb_tool->color_balance->preserve_luminosity != active)
{
cb_tool->color_balance->preserve_luminosity = active;
gimp_image_map_tool_preview (GIMP_IMAGE_MAP_TOOL (cb_tool));
}
}
static void
color_balance_cr_adjustment_update (GtkAdjustment *adjustment,
GimpColorBalanceTool *cb_tool)
{
GimpTransferMode tm;
tm = cb_tool->transfer_mode;
if (cb_tool->color_balance->cyan_red[tm] != adjustment->value)
{
cb_tool->color_balance->cyan_red[tm] = adjustment->value;
gimp_image_map_tool_preview (GIMP_IMAGE_MAP_TOOL (cb_tool));
}
}
static void
color_balance_mg_adjustment_update (GtkAdjustment *adjustment,
GimpColorBalanceTool *cb_tool)
{
GimpTransferMode tm;
tm = cb_tool->transfer_mode;
if (cb_tool->color_balance->magenta_green[tm] != adjustment->value)
{
cb_tool->color_balance->magenta_green[tm] = adjustment->value;
gimp_image_map_tool_preview (GIMP_IMAGE_MAP_TOOL (cb_tool));
}
}
static void
color_balance_yb_adjustment_update (GtkAdjustment *adjustment,
GimpColorBalanceTool *cb_tool)
{
GimpTransferMode tm;
tm = cb_tool->transfer_mode;
if (cb_tool->color_balance->yellow_blue[tm] != adjustment->value)
{
cb_tool->color_balance->yellow_blue[tm] = adjustment->value;
gimp_image_map_tool_preview (GIMP_IMAGE_MAP_TOOL (cb_tool));
}
}
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