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Gimp/app/tools/gimpcurvestool.c
Michael Natterer a90619ff00 app: rename enum GimpColorPickMode to GimpColorPickTarget 
This is just some preparation for fixing issue #1805, but actually
"target" is a much better name so I went the full way and also changed
GUI labels and the color picker tool options config property
accordingly.

If anyone notices at all, how horrible is it to lose your saved pick
target...

(cherry picked from commit b140b283dc)
2018-07-15 14:39:03 +02:00

933 lines
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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 <errno.h>
#include <glib/gstdio.h>
#include <gegl.h>
#include <gtk/gtk.h>
#include "libgimpbase/gimpbase.h"
#include "libgimpcolor/gimpcolor.h"
#include "libgimpconfig/gimpconfig.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "tools-types.h"
#include "operations/gimpcurvesconfig.h"
#include "operations/gimpoperationcurves.h"
#include "core/gimp.h"
#include "core/gimpcurve.h"
#include "core/gimpcurve-map.h"
#include "core/gimpdrawable.h"
#include "core/gimpdrawable-histogram.h"
#include "core/gimperror.h"
#include "core/gimphistogram.h"
#include "core/gimpimage.h"
#include "widgets/gimpcolorbar.h"
#include "widgets/gimpcurveview.h"
#include "widgets/gimphelp-ids.h"
#include "widgets/gimppropwidgets.h"
#include "widgets/gimpwidgets-utils.h"
#include "display/gimpdisplay.h"
#include "gimpcurvestool.h"
#include "gimphistogramoptions.h"
#include "gimp-intl.h"
#define GRAPH_SIZE 256
#define BAR_SIZE 12
#define RADIUS 4
/* local function prototypes */
static gboolean gimp_curves_tool_initialize (GimpTool *tool,
GimpDisplay *display,
GError **error);
static void gimp_curves_tool_button_release (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonReleaseType release_type,
GimpDisplay *display);
static gboolean gimp_curves_tool_key_press (GimpTool *tool,
GdkEventKey *kevent,
GimpDisplay *display);
static void gimp_curves_tool_oper_update (GimpTool *tool,
const GimpCoords *coords,
GdkModifierType state,
gboolean proximity,
GimpDisplay *display);
static gchar * gimp_curves_tool_get_operation (GimpFilterTool *filter_tool,
gchar **description);
static void gimp_curves_tool_dialog (GimpFilterTool *filter_tool);
static void gimp_curves_tool_reset (GimpFilterTool *filter_tool);
static void gimp_curves_tool_config_notify (GimpFilterTool *filter_tool,
GimpConfig *config,
const GParamSpec *pspec);
static gboolean gimp_curves_tool_settings_import (GimpFilterTool *filter_tool,
GInputStream *input,
GError **error);
static gboolean gimp_curves_tool_settings_export (GimpFilterTool *filter_tool,
GOutputStream *output,
GError **error);
static void gimp_curves_tool_color_picked (GimpFilterTool *filter_tool,
gpointer identifier,
gdouble x,
gdouble y,
const Babl *sample_format,
const GimpRGB *color);
static void gimp_curves_tool_export_setup (GimpSettingsBox *settings_box,
GtkFileChooserDialog *dialog,
gboolean export,
GimpCurvesTool *tool);
static void gimp_curves_tool_update_channel (GimpCurvesTool *tool);
static void curves_channel_callback (GtkWidget *widget,
GimpCurvesTool *tool);
static void curves_channel_reset_callback (GtkWidget *widget,
GimpCurvesTool *tool);
static gboolean curves_menu_sensitivity (gint value,
gpointer data);
static void curves_curve_type_callback (GtkWidget *widget,
GimpCurvesTool *tool);
static gboolean curves_get_channel_color (GtkWidget *widget,
GimpHistogramChannel channel,
GimpRGB *color);
G_DEFINE_TYPE (GimpCurvesTool, gimp_curves_tool, GIMP_TYPE_FILTER_TOOL)
#define parent_class gimp_curves_tool_parent_class
/* public functions */
void
gimp_curves_tool_register (GimpToolRegisterCallback callback,
gpointer data)
{
(* callback) (GIMP_TYPE_CURVES_TOOL,
GIMP_TYPE_HISTOGRAM_OPTIONS,
gimp_color_options_gui,
0,
"gimp-curves-tool",
_("Curves"),
_("Adjust color curves"),
N_("_Curves..."), NULL,
NULL, GIMP_HELP_TOOL_CURVES,
GIMP_ICON_TOOL_CURVES,
data);
}
/* private functions */
static void
gimp_curves_tool_class_init (GimpCurvesToolClass *klass)
{
GimpToolClass *tool_class = GIMP_TOOL_CLASS (klass);
GimpFilterToolClass *filter_tool_class = GIMP_FILTER_TOOL_CLASS (klass);
tool_class->initialize = gimp_curves_tool_initialize;
tool_class->button_release = gimp_curves_tool_button_release;
tool_class->key_press = gimp_curves_tool_key_press;
tool_class->oper_update = gimp_curves_tool_oper_update;
filter_tool_class->get_operation = gimp_curves_tool_get_operation;
filter_tool_class->dialog = gimp_curves_tool_dialog;
filter_tool_class->reset = gimp_curves_tool_reset;
filter_tool_class->config_notify = gimp_curves_tool_config_notify;
filter_tool_class->settings_import = gimp_curves_tool_settings_import;
filter_tool_class->settings_export = gimp_curves_tool_settings_export;
filter_tool_class->color_picked = gimp_curves_tool_color_picked;
}
static void
gimp_curves_tool_init (GimpCurvesTool *tool)
{
gint i;
for (i = 0; i < G_N_ELEMENTS (tool->picked_color); i++)
tool->picked_color[i] = -1.0;
}
static gboolean
gimp_curves_tool_initialize (GimpTool *tool,
GimpDisplay *display,
GError **error)
{
GimpFilterTool *filter_tool = GIMP_FILTER_TOOL (tool);
GimpCurvesTool *c_tool = GIMP_CURVES_TOOL (tool);
GimpImage *image = gimp_display_get_image (display);
GimpDrawable *drawable = gimp_image_get_active_drawable (image);
GimpCurvesConfig *config;
GimpHistogram *histogram;
if (! GIMP_TOOL_CLASS (parent_class)->initialize (tool, display, error))
{
return FALSE;
}
config = GIMP_CURVES_CONFIG (filter_tool->config);
gegl_node_set (filter_tool->operation,
"linear", config->linear,
NULL);
histogram = gimp_histogram_new (config->linear);
g_object_unref (gimp_drawable_calculate_histogram_async (
drawable, histogram, FALSE));
gimp_histogram_view_set_background (GIMP_HISTOGRAM_VIEW (c_tool->graph),
histogram);
g_object_unref (histogram);
if (gimp_drawable_get_component_type (drawable) == GIMP_COMPONENT_TYPE_U8)
{
gimp_curve_view_set_range_x (GIMP_CURVE_VIEW (c_tool->graph), 0, 255);
gimp_curve_view_set_range_y (GIMP_CURVE_VIEW (c_tool->graph), 0, 255);
}
else
{
gimp_curve_view_set_range_x (GIMP_CURVE_VIEW (c_tool->graph), 0, 100);
gimp_curve_view_set_range_y (GIMP_CURVE_VIEW (c_tool->graph), 0, 100);
}
/* always pick colors */
gimp_filter_tool_enable_color_picking (filter_tool, NULL, FALSE);
return TRUE;
}
static void
gimp_curves_tool_button_release (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonReleaseType release_type,
GimpDisplay *display)
{
GimpCurvesTool *c_tool = GIMP_CURVES_TOOL (tool);
GimpFilterTool *filter_tool = GIMP_FILTER_TOOL (tool);
GimpCurvesConfig *config = GIMP_CURVES_CONFIG (filter_tool->config);
if (state & gimp_get_extend_selection_mask ())
{
GimpCurve *curve = config->curve[config->channel];
gdouble value = c_tool->picked_color[config->channel];
gint closest;
closest = gimp_curve_get_closest_point (curve, value);
gimp_curve_view_set_selected (GIMP_CURVE_VIEW (c_tool->graph),
closest);
gimp_curve_set_point (curve, closest,
value, gimp_curve_map_value (curve, value));
}
else if (state & gimp_get_toggle_behavior_mask ())
{
GimpHistogramChannel channel;
for (channel = GIMP_HISTOGRAM_VALUE;
channel <= GIMP_HISTOGRAM_ALPHA;
channel++)
{
GimpCurve *curve = config->curve[channel];
gdouble value = c_tool->picked_color[channel];
gint closest;
if (value != -1)
{
closest = gimp_curve_get_closest_point (curve, value);
gimp_curve_view_set_selected (GIMP_CURVE_VIEW (c_tool->graph),
closest);
gimp_curve_set_point (curve, closest,
value, gimp_curve_map_value (curve, value));
}
}
}
/* chain up to halt the tool */
GIMP_TOOL_CLASS (parent_class)->button_release (tool, coords, time, state,
release_type, display);
}
static gboolean
gimp_curves_tool_key_press (GimpTool *tool,
GdkEventKey *kevent,
GimpDisplay *display)
{
GimpCurvesTool *c_tool = GIMP_CURVES_TOOL (tool);
if (tool->display && c_tool->graph)
{
if (gtk_widget_event (c_tool->graph, (GdkEvent *) kevent))
return TRUE;
}
return GIMP_TOOL_CLASS (parent_class)->key_press (tool, kevent, display);
}
static void
gimp_curves_tool_oper_update (GimpTool *tool,
const GimpCoords *coords,
GdkModifierType state,
gboolean proximity,
GimpDisplay *display)
{
if (gimp_filter_tool_on_guide (GIMP_FILTER_TOOL (tool),
coords, display))
{
GIMP_TOOL_CLASS (parent_class)->oper_update (tool, coords, state, proximity,
display);
}
else
{
GimpColorPickTarget target;
gchar *status = NULL;
GdkModifierType extend_mask = gimp_get_extend_selection_mask ();
GdkModifierType toggle_mask = gimp_get_toggle_behavior_mask ();
gimp_tool_pop_status (tool, display);
if (state & extend_mask)
{
target = GIMP_COLOR_PICK_TARGET_PALETTE;
status = g_strdup (_("Click to add a control point"));
}
else if (state & toggle_mask)
{
target = GIMP_COLOR_PICK_TARGET_PALETTE;
status = g_strdup (_("Click to add control points to all channels"));
}
else
{
target = GIMP_COLOR_PICK_TARGET_NONE;
status = gimp_suggest_modifiers (_("Click to locate on curve"),
(extend_mask | toggle_mask) & ~state,
_("%s: add control point"),
_("%s: add control points to all channels"),
NULL);
}
GIMP_COLOR_TOOL (tool)->pick_target = target;
if (proximity)
gimp_tool_push_status (tool, display, "%s", status);
g_free (status);
}
}
static gchar *
gimp_curves_tool_get_operation (GimpFilterTool *filter_tool,
gchar **description)
{
*description = g_strdup (_("Adjust Color Curves"));
return g_strdup ("gimp:curves");
}
/*******************/
/* Curves dialog */
/*******************/
static void
gimp_curves_tool_dialog (GimpFilterTool *filter_tool)
{
GimpCurvesTool *tool = GIMP_CURVES_TOOL (filter_tool);
GimpToolOptions *tool_options = GIMP_TOOL_GET_OPTIONS (filter_tool);
GimpCurvesConfig *config = GIMP_CURVES_CONFIG (filter_tool->config);
GtkListStore *store;
GtkWidget *main_vbox;
GtkWidget *frame_vbox;
GtkWidget *vbox;
GtkWidget *hbox;
GtkWidget *hbox2;
GtkWidget *label;
GtkWidget *main_frame;
GtkWidget *frame;
GtkWidget *table;
GtkWidget *button;
GtkWidget *bar;
GtkWidget *combo;
g_signal_connect (filter_tool->settings_box, "file-dialog-setup",
G_CALLBACK (gimp_curves_tool_export_setup),
filter_tool);
main_vbox = gimp_filter_tool_dialog_get_vbox (filter_tool);
/* The combo box for selecting channels */
main_frame = gimp_frame_new (NULL);
gtk_box_pack_start (GTK_BOX (main_vbox), main_frame, TRUE, TRUE, 0);
gtk_widget_show (main_frame);
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
gtk_frame_set_label_widget (GTK_FRAME (main_frame), hbox);
gtk_widget_show (hbox);
label = gtk_label_new_with_mnemonic (_("Cha_nnel:"));
gimp_label_set_attributes (GTK_LABEL (label),
PANGO_ATTR_WEIGHT, PANGO_WEIGHT_BOLD,
-1);
gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
gtk_widget_show (label);
store = gimp_enum_store_new_with_range (GIMP_TYPE_HISTOGRAM_CHANNEL,
GIMP_HISTOGRAM_VALUE,
GIMP_HISTOGRAM_ALPHA);
tool->channel_menu =
gimp_enum_combo_box_new_with_model (GIMP_ENUM_STORE (store));
g_object_unref (store);
g_object_add_weak_pointer (G_OBJECT (tool->channel_menu),
(gpointer) &tool->channel_menu);
gimp_int_combo_box_set_active (GIMP_INT_COMBO_BOX (tool->channel_menu),
config->channel);
gimp_enum_combo_box_set_icon_prefix (GIMP_ENUM_COMBO_BOX (tool->channel_menu),
"gimp-channel");
gimp_int_combo_box_set_sensitivity (GIMP_INT_COMBO_BOX (tool->channel_menu),
curves_menu_sensitivity, filter_tool, NULL);
gtk_box_pack_start (GTK_BOX (hbox), tool->channel_menu, FALSE, FALSE, 0);
gtk_widget_show (tool->channel_menu);
g_signal_connect (tool->channel_menu, "changed",
G_CALLBACK (curves_channel_callback),
tool);
gtk_label_set_mnemonic_widget (GTK_LABEL (label), tool->channel_menu);
button = gtk_button_new_with_mnemonic (_("R_eset Channel"));
gtk_box_pack_start (GTK_BOX (hbox), button, FALSE, FALSE, 0);
gtk_widget_show (button);
g_signal_connect (button, "clicked",
G_CALLBACK (curves_channel_reset_callback),
tool);
/* The histogram scale radio buttons */
hbox2 = gimp_prop_enum_icon_box_new (G_OBJECT (tool_options),
"histogram-scale", "gimp-histogram",
0, 0);
gtk_box_pack_end (GTK_BOX (hbox), hbox2, FALSE, FALSE, 0);
gtk_widget_show (hbox2);
/* The linear/perceptual radio buttons */
hbox2 = gimp_prop_boolean_icon_box_new (G_OBJECT (config),
"linear",
GIMP_ICON_COLOR_SPACE_LINEAR,
GIMP_ICON_COLOR_SPACE_PERCEPTUAL,
_("Adjust curves in linear light"),
_("Adjust curves perceptually"));
gtk_box_pack_end (GTK_BOX (hbox), hbox2, FALSE, FALSE, 0);
gtk_widget_show (hbox2);
frame_vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 4);
gtk_container_add (GTK_CONTAINER (main_frame), frame_vbox);
gtk_widget_show (frame_vbox);
/* The table for the color bars and the graph */
table = gtk_table_new (2, 2, FALSE);
gtk_table_set_col_spacings (GTK_TABLE (table), 2);
gtk_table_set_row_spacings (GTK_TABLE (table), 2);
gtk_box_pack_start (GTK_BOX (frame_vbox), table, TRUE, TRUE, 0);
/* The left color bar */
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
gtk_table_attach (GTK_TABLE (table), vbox, 0, 1, 0, 1,
GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 0);
gtk_widget_show (vbox);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_box_pack_start (GTK_BOX (vbox), frame, TRUE, TRUE, RADIUS);
gtk_widget_show (frame);
tool->yrange = gimp_color_bar_new (GTK_ORIENTATION_VERTICAL);
gtk_widget_set_size_request (tool->yrange, BAR_SIZE, -1);
gtk_container_add (GTK_CONTAINER (frame), tool->yrange);
gtk_widget_show (tool->yrange);
/* The curves graph */
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_table_attach (GTK_TABLE (table), frame, 1, 2, 0, 1,
GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 0);
gtk_widget_show (frame);
tool->graph = gimp_curve_view_new ();
g_object_add_weak_pointer (G_OBJECT (tool->graph),
(gpointer) &tool->graph);
gimp_curve_view_set_range_x (GIMP_CURVE_VIEW (tool->graph), 0, 255);
gimp_curve_view_set_range_y (GIMP_CURVE_VIEW (tool->graph), 0, 255);
gtk_widget_set_size_request (tool->graph,
GRAPH_SIZE + RADIUS * 2,
GRAPH_SIZE + RADIUS * 2);
g_object_set (tool->graph,
"border-width", RADIUS,
"subdivisions", 1,
NULL);
gtk_container_add (GTK_CONTAINER (frame), tool->graph);
gtk_widget_show (tool->graph);
g_object_bind_property (G_OBJECT (tool_options), "histogram-scale",
G_OBJECT (tool->graph), "histogram-scale",
G_BINDING_SYNC_CREATE |
G_BINDING_BIDIRECTIONAL);
/* The bottom color bar */
hbox2 = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
gtk_table_attach (GTK_TABLE (table), hbox2, 1, 2, 1, 2,
GTK_EXPAND | GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (hbox2);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_box_pack_start (GTK_BOX (hbox2), frame, TRUE, TRUE, RADIUS);
gtk_widget_show (frame);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
gtk_box_set_homogeneous (GTK_BOX (vbox), TRUE);
gtk_container_add (GTK_CONTAINER (frame), vbox);
gtk_widget_show (vbox);
tool->xrange = gimp_color_bar_new (GTK_ORIENTATION_HORIZONTAL);
gtk_widget_set_size_request (tool->xrange, -1, BAR_SIZE / 2);
gtk_box_pack_start (GTK_BOX (vbox), tool->xrange, TRUE, TRUE, 0);
gtk_widget_show (tool->xrange);
bar = gimp_color_bar_new (GTK_ORIENTATION_HORIZONTAL);
gtk_box_pack_start (GTK_BOX (vbox), bar, TRUE, TRUE, 0);
gtk_widget_show (bar);
gtk_widget_show (table);
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
gtk_box_pack_end (GTK_BOX (frame_vbox), hbox, FALSE, FALSE, 0);
gtk_widget_show (hbox);
label = gtk_label_new_with_mnemonic (_("Curve _type:"));
gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
gtk_widget_show (label);
tool->curve_type = combo = gimp_enum_combo_box_new (GIMP_TYPE_CURVE_TYPE);
gimp_enum_combo_box_set_icon_prefix (GIMP_ENUM_COMBO_BOX (combo),
"gimp-curve");
gimp_int_combo_box_connect (GIMP_INT_COMBO_BOX (combo), 0,
G_CALLBACK (curves_curve_type_callback),
tool);
gtk_box_pack_start (GTK_BOX (hbox), combo, TRUE, TRUE, 0);
gtk_widget_show (combo);
gtk_label_set_mnemonic_widget (GTK_LABEL (label), combo);
gimp_curves_tool_update_channel (tool);
}
static void
gimp_curves_tool_reset (GimpFilterTool *filter_tool)
{
GimpCurvesConfig *config = GIMP_CURVES_CONFIG (filter_tool->config);
GimpCurvesConfig *default_config;
GimpHistogramChannel channel;
default_config = GIMP_CURVES_CONFIG (filter_tool->default_config);
g_object_freeze_notify (G_OBJECT (config));
if (default_config)
g_object_set (config, "linear", default_config->linear, NULL);
else
gimp_config_reset_property (G_OBJECT (config), "linear");
for (channel = GIMP_HISTOGRAM_VALUE;
channel <= GIMP_HISTOGRAM_ALPHA;
channel++)
{
if (default_config)
{
GimpCurveType curve_type = config->curve[channel]->curve_type;
g_object_freeze_notify (G_OBJECT (config->curve[channel]));
gimp_config_copy (GIMP_CONFIG (default_config->curve[channel]),
GIMP_CONFIG (config->curve[channel]),
0);
g_object_set (config->curve[channel],
"curve-type", curve_type,
NULL);
g_object_thaw_notify (G_OBJECT (config->curve[channel]));
}
else
{
gimp_curve_reset (config->curve[channel], FALSE);
}
}
g_object_thaw_notify (G_OBJECT (config));
}
static void
gimp_curves_tool_config_notify (GimpFilterTool *filter_tool,
GimpConfig *config,
const GParamSpec *pspec)
{
GimpCurvesTool *curves_tool = GIMP_CURVES_TOOL (filter_tool);
GimpCurvesConfig *curves_config = GIMP_CURVES_CONFIG (config);
GimpCurve *curve = curves_config->curve[curves_config->channel];
GIMP_FILTER_TOOL_CLASS (parent_class)->config_notify (filter_tool,
config, pspec);
if (! curves_tool->channel_menu ||
! curves_tool->graph)
return;
if (! strcmp (pspec->name, "linear"))
{
GimpHistogram *histogram;
gegl_node_set (filter_tool->operation,
"linear", curves_config->linear,
NULL);
histogram = gimp_histogram_new (curves_config->linear);
g_object_unref (gimp_drawable_calculate_histogram_async (
GIMP_TOOL (filter_tool)->drawable, histogram, FALSE));
gimp_histogram_view_set_background (GIMP_HISTOGRAM_VIEW (curves_tool->graph),
histogram);
g_object_unref (histogram);
}
else if (! strcmp (pspec->name, "channel"))
{
gimp_curves_tool_update_channel (GIMP_CURVES_TOOL (filter_tool));
}
else if (! strcmp (pspec->name, "curve"))
{
gimp_int_combo_box_set_active (GIMP_INT_COMBO_BOX (curves_tool->curve_type),
curve->curve_type);
}
}
static gboolean
gimp_curves_tool_settings_import (GimpFilterTool *filter_tool,
GInputStream *input,
GError **error)
{
GimpCurvesConfig *config = GIMP_CURVES_CONFIG (filter_tool->config);
gchar header[64];
gsize bytes_read;
if (! g_input_stream_read_all (input, header, sizeof (header),
&bytes_read, NULL, error) ||
bytes_read != sizeof (header))
{
g_prefix_error (error, _("Could not read header: "));
return FALSE;
}
g_seekable_seek (G_SEEKABLE (input), 0, G_SEEK_SET, NULL, NULL);
if (g_str_has_prefix (header, "# GIMP Curves File\n"))
return gimp_curves_config_load_cruft (config, input, error);
return GIMP_FILTER_TOOL_CLASS (parent_class)->settings_import (filter_tool,
input,
error);
}
static gboolean
gimp_curves_tool_settings_export (GimpFilterTool *filter_tool,
GOutputStream *output,
GError **error)
{
GimpCurvesTool *tool = GIMP_CURVES_TOOL (filter_tool);
GimpCurvesConfig *config = GIMP_CURVES_CONFIG (filter_tool->config);
if (tool->export_old_format)
return gimp_curves_config_save_cruft (config, output, error);
return GIMP_FILTER_TOOL_CLASS (parent_class)->settings_export (filter_tool,
output,
error);
}
static void
gimp_curves_tool_color_picked (GimpFilterTool *filter_tool,
gpointer identifier,
gdouble x,
gdouble y,
const Babl *sample_format,
const GimpRGB *color)
{
GimpCurvesTool *tool = GIMP_CURVES_TOOL (filter_tool);
GimpCurvesConfig *config = GIMP_CURVES_CONFIG (filter_tool->config);
GimpDrawable *drawable = GIMP_TOOL (tool)->drawable;
GimpRGB rgb = *color;
if (config->linear)
babl_process (babl_fish (babl_format ("R'G'B'A double"),
babl_format ("RGBA double")),
&rgb, &rgb, 1);
tool->picked_color[GIMP_HISTOGRAM_RED] = rgb.r;
tool->picked_color[GIMP_HISTOGRAM_GREEN] = rgb.g;
tool->picked_color[GIMP_HISTOGRAM_BLUE] = rgb.b;
if (gimp_drawable_has_alpha (drawable))
tool->picked_color[GIMP_HISTOGRAM_ALPHA] = rgb.a;
else
tool->picked_color[GIMP_HISTOGRAM_ALPHA] = -1;
tool->picked_color[GIMP_HISTOGRAM_VALUE] = MAX (MAX (rgb.r, rgb.g), rgb.b);
gimp_curve_view_set_xpos (GIMP_CURVE_VIEW (tool->graph),
tool->picked_color[config->channel]);
}
static void
gimp_curves_tool_export_setup (GimpSettingsBox *settings_box,
GtkFileChooserDialog *dialog,
gboolean export,
GimpCurvesTool *tool)
{
GtkWidget *button;
if (! export)
return;
button = gtk_check_button_new_with_mnemonic (_("Use _old curves file format"));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button),
tool->export_old_format);
gtk_file_chooser_set_extra_widget (GTK_FILE_CHOOSER (dialog), button);
gtk_widget_show (button);
g_signal_connect (button, "toggled",
G_CALLBACK (gimp_toggle_button_update),
&tool->export_old_format);
}
static void
gimp_curves_tool_update_channel (GimpCurvesTool *tool)
{
GimpFilterTool *filter_tool = GIMP_FILTER_TOOL (tool);
GimpCurvesConfig *config = GIMP_CURVES_CONFIG (filter_tool->config);
GimpCurve *curve = config->curve[config->channel];
GimpHistogramChannel channel;
gimp_int_combo_box_set_active (GIMP_INT_COMBO_BOX (tool->channel_menu),
config->channel);
switch (config->channel)
{
guchar r[256];
guchar g[256];
guchar b[256];
case GIMP_HISTOGRAM_VALUE:
case GIMP_HISTOGRAM_ALPHA:
case GIMP_HISTOGRAM_RGB:
case GIMP_HISTOGRAM_LUMINANCE:
gimp_curve_get_uchar (curve, sizeof (r), r);
gimp_color_bar_set_buffers (GIMP_COLOR_BAR (tool->xrange),
r, r, r);
break;
case GIMP_HISTOGRAM_RED:
case GIMP_HISTOGRAM_GREEN:
case GIMP_HISTOGRAM_BLUE:
gimp_curve_get_uchar (config->curve[GIMP_HISTOGRAM_RED],
sizeof (r), r);
gimp_curve_get_uchar (config->curve[GIMP_HISTOGRAM_GREEN],
sizeof (g), g);
gimp_curve_get_uchar (config->curve[GIMP_HISTOGRAM_BLUE],
sizeof (b), b);
gimp_color_bar_set_buffers (GIMP_COLOR_BAR (tool->xrange),
r, g, b);
break;
}
gimp_histogram_view_set_channel (GIMP_HISTOGRAM_VIEW (tool->graph),
config->channel);
gimp_curve_view_set_xpos (GIMP_CURVE_VIEW (tool->graph),
tool->picked_color[config->channel]);
gimp_color_bar_set_channel (GIMP_COLOR_BAR (tool->yrange),
config->channel);
gimp_curve_view_remove_all_backgrounds (GIMP_CURVE_VIEW (tool->graph));
for (channel = GIMP_HISTOGRAM_VALUE;
channel <= GIMP_HISTOGRAM_ALPHA;
channel++)
{
GimpRGB curve_color;
gboolean has_color;
has_color = curves_get_channel_color (tool->graph, channel, &curve_color);
if (channel == config->channel)
{
gimp_curve_view_set_curve (GIMP_CURVE_VIEW (tool->graph), curve,
has_color ? &curve_color : NULL);
}
else
{
gimp_curve_view_add_background (GIMP_CURVE_VIEW (tool->graph),
config->curve[channel],
has_color ? &curve_color : NULL);
}
}
gimp_int_combo_box_set_active (GIMP_INT_COMBO_BOX (tool->curve_type),
curve->curve_type);
}
static void
curves_channel_callback (GtkWidget *widget,
GimpCurvesTool *tool)
{
GimpFilterTool *filter_tool = GIMP_FILTER_TOOL (tool);
GimpCurvesConfig *config = GIMP_CURVES_CONFIG (filter_tool->config);
gint value;
if (gimp_int_combo_box_get_active (GIMP_INT_COMBO_BOX (widget), &value) &&
config->channel != value)
{
g_object_set (config,
"channel", value,
NULL);
}
}
static void
curves_channel_reset_callback (GtkWidget *widget,
GimpCurvesTool *tool)
{
GimpFilterTool *filter_tool = GIMP_FILTER_TOOL (tool);
GimpCurvesConfig *config = GIMP_CURVES_CONFIG (filter_tool->config);
gimp_curve_reset (config->curve[config->channel], FALSE);
}
static gboolean
curves_menu_sensitivity (gint value,
gpointer data)
{
GimpDrawable *drawable = GIMP_TOOL (data)->drawable;
GimpHistogramChannel channel = value;
if (!drawable)
return FALSE;
switch (channel)
{
case GIMP_HISTOGRAM_VALUE:
return TRUE;
case GIMP_HISTOGRAM_RED:
case GIMP_HISTOGRAM_GREEN:
case GIMP_HISTOGRAM_BLUE:
return gimp_drawable_is_rgb (drawable);
case GIMP_HISTOGRAM_ALPHA:
return gimp_drawable_has_alpha (drawable);
case GIMP_HISTOGRAM_RGB:
return FALSE;
case GIMP_HISTOGRAM_LUMINANCE:
return FALSE;
}
return FALSE;
}
static void
curves_curve_type_callback (GtkWidget *widget,
GimpCurvesTool *tool)
{
gint value;
if (gimp_int_combo_box_get_active (GIMP_INT_COMBO_BOX (widget), &value))
{
GimpFilterTool *filter_tool = GIMP_FILTER_TOOL (tool);
GimpCurvesConfig *config = GIMP_CURVES_CONFIG (filter_tool->config);
GimpCurveType curve_type = value;
if (config->curve[config->channel]->curve_type != curve_type)
gimp_curve_set_curve_type (config->curve[config->channel], curve_type);
}
}
static gboolean
curves_get_channel_color (GtkWidget *widget,
GimpHistogramChannel channel,
GimpRGB *color)
{
static const GimpRGB channel_colors[GIMP_HISTOGRAM_RGB] =
{
{ 0.0, 0.0, 0.0, 1.0 },
{ 1.0, 0.0, 0.0, 1.0 },
{ 0.0, 1.0, 0.0, 1.0 },
{ 0.0, 0.0, 1.0, 1.0 },
{ 0.5, 0.5, 0.5, 1.0 }
};
if (channel == GIMP_HISTOGRAM_VALUE)
return FALSE;
if (channel == GIMP_HISTOGRAM_ALPHA)
{
GtkStyle *style = gtk_widget_get_style (widget);
gimp_rgba_set (color,
style->text_aa[GTK_STATE_NORMAL].red / 65535.0,
style->text_aa[GTK_STATE_NORMAL].green / 65535.0,
style->text_aa[GTK_STATE_NORMAL].blue / 65535.0,
1.0);
return TRUE;
}
*color = channel_colors[channel];
return TRUE;
}
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