458 lines
15 KiB
C
458 lines
15 KiB
C
/* PIKA - Photo and Image Kooker Application
|
|
* a rebranding of The GNU Image Manipulation Program (created with heckimp)
|
|
* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
|
|
*
|
|
* Original copyright, applying to most contents (license remains unchanged):
|
|
* 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 "libpikaconfig/pikaconfig.h"
|
|
#include "libpikawidgets/pikawidgets.h"
|
|
|
|
#include "tools-types.h"
|
|
|
|
#include "core/pika-gui.h"
|
|
#include "core/pikaasync.h"
|
|
#include "core/pikacancelable.h"
|
|
#include "core/pikadrawable.h"
|
|
#include "core/pikadrawable-histogram.h"
|
|
#include "core/pikahistogram.h"
|
|
#include "core/pikaimage.h"
|
|
#include "core/pikatoolinfo.h"
|
|
#include "core/pikatriviallycancelablewaitable.h"
|
|
#include "core/pikawaitable.h"
|
|
|
|
#include "widgets/pikahelp-ids.h"
|
|
#include "widgets/pikahistogrambox.h"
|
|
#include "widgets/pikahistogramview.h"
|
|
|
|
#include "display/pikadisplay.h"
|
|
|
|
#include "pikahistogramoptions.h"
|
|
#include "pikathresholdtool.h"
|
|
#include "pikatooloptions-gui.h"
|
|
|
|
#include "pika-intl.h"
|
|
|
|
|
|
/* local function prototypes */
|
|
|
|
static void pika_threshold_tool_finalize (GObject *object);
|
|
|
|
static gboolean pika_threshold_tool_initialize (PikaTool *tool,
|
|
PikaDisplay *display,
|
|
GError **error);
|
|
|
|
static gchar * pika_threshold_tool_get_operation (PikaFilterTool *filter_tool,
|
|
gchar **description);
|
|
static void pika_threshold_tool_dialog (PikaFilterTool *filter_tool);
|
|
static void pika_threshold_tool_config_notify (PikaFilterTool *filter_tool,
|
|
PikaConfig *config,
|
|
const GParamSpec *pspec);
|
|
|
|
static gboolean pika_threshold_tool_channel_sensitive
|
|
(gint value,
|
|
gpointer data);
|
|
static void pika_threshold_tool_histogram_range (PikaHistogramView *view,
|
|
gint start,
|
|
gint end,
|
|
PikaThresholdTool *t_tool);
|
|
static void pika_threshold_tool_auto_clicked (GtkWidget *button,
|
|
PikaThresholdTool *t_tool);
|
|
|
|
|
|
G_DEFINE_TYPE (PikaThresholdTool, pika_threshold_tool,
|
|
PIKA_TYPE_FILTER_TOOL)
|
|
|
|
#define parent_class pika_threshold_tool_parent_class
|
|
|
|
|
|
void
|
|
pika_threshold_tool_register (PikaToolRegisterCallback callback,
|
|
gpointer data)
|
|
{
|
|
(* callback) (PIKA_TYPE_THRESHOLD_TOOL,
|
|
PIKA_TYPE_HISTOGRAM_OPTIONS,
|
|
NULL,
|
|
0,
|
|
"pika-threshold-tool",
|
|
_("Threshold"),
|
|
_("Reduce image to two colors using a threshold"),
|
|
N_("_Threshold..."), NULL,
|
|
NULL, PIKA_HELP_TOOL_THRESHOLD,
|
|
PIKA_ICON_TOOL_THRESHOLD,
|
|
data);
|
|
}
|
|
|
|
static void
|
|
pika_threshold_tool_class_init (PikaThresholdToolClass *klass)
|
|
{
|
|
GObjectClass *object_class = G_OBJECT_CLASS (klass);
|
|
PikaToolClass *tool_class = PIKA_TOOL_CLASS (klass);
|
|
PikaFilterToolClass *filter_tool_class = PIKA_FILTER_TOOL_CLASS (klass);
|
|
|
|
object_class->finalize = pika_threshold_tool_finalize;
|
|
|
|
tool_class->initialize = pika_threshold_tool_initialize;
|
|
|
|
filter_tool_class->get_operation = pika_threshold_tool_get_operation;
|
|
filter_tool_class->dialog = pika_threshold_tool_dialog;
|
|
filter_tool_class->config_notify = pika_threshold_tool_config_notify;
|
|
}
|
|
|
|
static void
|
|
pika_threshold_tool_init (PikaThresholdTool *t_tool)
|
|
{
|
|
t_tool->histogram = pika_histogram_new (FALSE);
|
|
}
|
|
|
|
static void
|
|
pika_threshold_tool_finalize (GObject *object)
|
|
{
|
|
PikaThresholdTool *t_tool = PIKA_THRESHOLD_TOOL (object);
|
|
|
|
g_clear_object (&t_tool->histogram);
|
|
g_clear_object (&t_tool->histogram_async);
|
|
|
|
G_OBJECT_CLASS (parent_class)->finalize (object);
|
|
}
|
|
|
|
static gboolean
|
|
pika_threshold_tool_initialize (PikaTool *tool,
|
|
PikaDisplay *display,
|
|
GError **error)
|
|
{
|
|
PikaThresholdTool *t_tool = PIKA_THRESHOLD_TOOL (tool);
|
|
PikaFilterTool *filter_tool = PIKA_FILTER_TOOL (tool);
|
|
PikaImage *image = pika_display_get_image (display);
|
|
GList *drawables;
|
|
PikaDrawable *drawable;
|
|
gdouble low;
|
|
gdouble high;
|
|
gint n_bins;
|
|
|
|
if (! PIKA_TOOL_CLASS (parent_class)->initialize (tool, display, error))
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
drawables = pika_image_get_selected_drawables (image);
|
|
if (g_list_length (drawables) != 1)
|
|
{
|
|
if (g_list_length (drawables) > 1)
|
|
pika_tool_message_literal (tool, display,
|
|
_("Cannot modify multiple drawables. Select only one."));
|
|
else
|
|
pika_tool_message_literal (tool, display, _("No selected drawables."));
|
|
|
|
g_list_free (drawables);
|
|
return FALSE;
|
|
}
|
|
|
|
drawable = drawables->data;
|
|
g_list_free (drawables);
|
|
|
|
g_clear_object (&t_tool->histogram_async);
|
|
|
|
g_object_get (filter_tool->config,
|
|
"low", &low,
|
|
"high", &high,
|
|
NULL);
|
|
|
|
/* this is a hack to make sure that
|
|
* 'pika_histogram_n_bins (t_tool->histogram)' returns the correct value for
|
|
* 'drawable' before the asynchronous calculation of its histogram is
|
|
* finished.
|
|
*/
|
|
{
|
|
GeglBuffer *temp;
|
|
|
|
temp = gegl_buffer_new (GEGL_RECTANGLE (0, 0, 1, 1),
|
|
pika_drawable_get_format (drawable));
|
|
|
|
pika_histogram_calculate (t_tool->histogram,
|
|
temp, GEGL_RECTANGLE (0, 0, 1, 1),
|
|
NULL, NULL);
|
|
|
|
g_object_unref (temp);
|
|
}
|
|
|
|
n_bins = pika_histogram_n_bins (t_tool->histogram);
|
|
|
|
t_tool->histogram_async = pika_drawable_calculate_histogram_async (
|
|
drawable, t_tool->histogram, FALSE);
|
|
pika_histogram_view_set_histogram (t_tool->histogram_box->view,
|
|
t_tool->histogram);
|
|
|
|
pika_histogram_view_set_range (t_tool->histogram_box->view,
|
|
low * (n_bins - 0.0001),
|
|
high * (n_bins - 0.0001));
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gchar *
|
|
pika_threshold_tool_get_operation (PikaFilterTool *filter_tool,
|
|
gchar **description)
|
|
{
|
|
*description = g_strdup (_("Apply Threshold"));
|
|
|
|
return g_strdup ("pika:threshold");
|
|
}
|
|
|
|
|
|
/**********************/
|
|
/* Threshold dialog */
|
|
/**********************/
|
|
|
|
static void
|
|
pika_threshold_tool_dialog (PikaFilterTool *filter_tool)
|
|
{
|
|
PikaThresholdTool *t_tool = PIKA_THRESHOLD_TOOL (filter_tool);
|
|
PikaToolOptions *tool_options = PIKA_TOOL_GET_OPTIONS (filter_tool);
|
|
GtkWidget *main_vbox;
|
|
GtkWidget *main_frame;
|
|
GtkWidget *frame_vbox;
|
|
GtkWidget *hbox;
|
|
GtkWidget *label;
|
|
GtkWidget *hbox2;
|
|
GtkWidget *box;
|
|
GtkWidget *button;
|
|
PikaHistogramChannel channel;
|
|
|
|
main_vbox = pika_filter_tool_dialog_get_vbox (filter_tool);
|
|
|
|
main_frame = pika_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:"));
|
|
pika_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);
|
|
|
|
t_tool->channel_menu = pika_prop_enum_combo_box_new (filter_tool->config,
|
|
"channel", -1, -1);
|
|
pika_enum_combo_box_set_icon_prefix (PIKA_ENUM_COMBO_BOX (t_tool->channel_menu),
|
|
"pika-channel");
|
|
pika_int_combo_box_set_sensitivity (PIKA_INT_COMBO_BOX (t_tool->channel_menu),
|
|
pika_threshold_tool_channel_sensitive,
|
|
filter_tool, NULL);
|
|
gtk_box_pack_start (GTK_BOX (hbox), t_tool->channel_menu, FALSE, FALSE, 0);
|
|
|
|
gtk_label_set_mnemonic_widget (GTK_LABEL (label), t_tool->channel_menu);
|
|
|
|
hbox2 = pika_prop_enum_icon_box_new (G_OBJECT (tool_options),
|
|
"histogram-scale", "pika-histogram",
|
|
0, 0);
|
|
gtk_box_pack_end (GTK_BOX (hbox), hbox2, FALSE, FALSE, 0);
|
|
|
|
frame_vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 4);
|
|
gtk_container_add (GTK_CONTAINER (main_frame), frame_vbox);
|
|
gtk_widget_show (frame_vbox);
|
|
|
|
box = pika_histogram_box_new ();
|
|
gtk_box_pack_start (GTK_BOX (frame_vbox), box, TRUE, TRUE, 0);
|
|
gtk_widget_show (box);
|
|
|
|
t_tool->histogram_box = PIKA_HISTOGRAM_BOX (box);
|
|
|
|
g_object_get (filter_tool->config,
|
|
"channel", &channel,
|
|
NULL);
|
|
|
|
pika_histogram_view_set_channel (t_tool->histogram_box->view, channel);
|
|
|
|
g_signal_connect (t_tool->histogram_box->view, "range-changed",
|
|
G_CALLBACK (pika_threshold_tool_histogram_range),
|
|
t_tool);
|
|
|
|
g_object_bind_property (G_OBJECT (tool_options), "histogram-scale",
|
|
G_OBJECT (t_tool->histogram_box->view), "histogram-scale",
|
|
G_BINDING_SYNC_CREATE |
|
|
G_BINDING_BIDIRECTIONAL);
|
|
|
|
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
|
|
gtk_box_pack_start (GTK_BOX (frame_vbox), hbox, FALSE, FALSE, 0);
|
|
gtk_widget_show (hbox);
|
|
|
|
button = gtk_button_new_with_mnemonic (_("_Auto"));
|
|
gtk_box_pack_end (GTK_BOX (hbox), button, FALSE, FALSE, 0);
|
|
pika_help_set_help_data (button, _("Automatically adjust to optimal "
|
|
"binarization threshold"), NULL);
|
|
gtk_widget_show (button);
|
|
|
|
g_signal_connect (button, "clicked",
|
|
G_CALLBACK (pika_threshold_tool_auto_clicked),
|
|
t_tool);
|
|
}
|
|
|
|
static void
|
|
pika_threshold_tool_config_notify (PikaFilterTool *filter_tool,
|
|
PikaConfig *config,
|
|
const GParamSpec *pspec)
|
|
{
|
|
PikaThresholdTool *t_tool = PIKA_THRESHOLD_TOOL (filter_tool);
|
|
|
|
PIKA_FILTER_TOOL_CLASS (parent_class)->config_notify (filter_tool,
|
|
config, pspec);
|
|
|
|
if (! t_tool->histogram_box)
|
|
return;
|
|
|
|
if (! strcmp (pspec->name, "channel"))
|
|
{
|
|
PikaHistogramChannel channel;
|
|
|
|
g_object_get (config,
|
|
"channel", &channel,
|
|
NULL);
|
|
|
|
pika_histogram_view_set_channel (t_tool->histogram_box->view,
|
|
channel);
|
|
}
|
|
else if (! strcmp (pspec->name, "low") ||
|
|
! strcmp (pspec->name, "high"))
|
|
{
|
|
gdouble low;
|
|
gdouble high;
|
|
gint n_bins;
|
|
|
|
g_object_get (config,
|
|
"low", &low,
|
|
"high", &high,
|
|
NULL);
|
|
|
|
n_bins = pika_histogram_n_bins (t_tool->histogram);
|
|
|
|
pika_histogram_view_set_range (t_tool->histogram_box->view,
|
|
low * (n_bins - 0.0001),
|
|
high * (n_bins - 0.0001));
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
pika_threshold_tool_channel_sensitive (gint value,
|
|
gpointer data)
|
|
{
|
|
GList *drawables = PIKA_TOOL (data)->drawables;
|
|
PikaDrawable *drawable;
|
|
PikaHistogramChannel channel = value;
|
|
|
|
if (!drawables)
|
|
return FALSE;
|
|
|
|
g_return_val_if_fail (g_list_length (drawables) == 1, FALSE);
|
|
drawable = drawables->data;
|
|
|
|
switch (channel)
|
|
{
|
|
case PIKA_HISTOGRAM_VALUE:
|
|
return TRUE;
|
|
|
|
case PIKA_HISTOGRAM_RED:
|
|
case PIKA_HISTOGRAM_GREEN:
|
|
case PIKA_HISTOGRAM_BLUE:
|
|
return pika_drawable_is_rgb (drawable);
|
|
|
|
case PIKA_HISTOGRAM_ALPHA:
|
|
return pika_drawable_has_alpha (drawable);
|
|
|
|
case PIKA_HISTOGRAM_RGB:
|
|
return pika_drawable_is_rgb (drawable);
|
|
|
|
case PIKA_HISTOGRAM_LUMINANCE:
|
|
return pika_drawable_is_rgb (drawable);
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static void
|
|
pika_threshold_tool_histogram_range (PikaHistogramView *widget,
|
|
gint start,
|
|
gint end,
|
|
PikaThresholdTool *t_tool)
|
|
{
|
|
PikaFilterTool *filter_tool = PIKA_FILTER_TOOL (t_tool);
|
|
gint n_bins = pika_histogram_n_bins (t_tool->histogram);
|
|
gdouble low = (gdouble) start / (n_bins - 1);
|
|
gdouble high = (gdouble) end / (n_bins - 1);
|
|
gdouble config_low;
|
|
gdouble config_high;
|
|
|
|
g_object_get (filter_tool->config,
|
|
"low", &config_low,
|
|
"high", &config_high,
|
|
NULL);
|
|
|
|
if (low != config_low ||
|
|
high != config_high)
|
|
{
|
|
g_object_set (filter_tool->config,
|
|
"low", low,
|
|
"high", high,
|
|
NULL);
|
|
}
|
|
}
|
|
|
|
static void
|
|
pika_threshold_tool_auto_clicked (GtkWidget *button,
|
|
PikaThresholdTool *t_tool)
|
|
{
|
|
PikaTool *tool = PIKA_TOOL (t_tool);
|
|
PikaWaitable *waitable;
|
|
|
|
waitable = pika_trivially_cancelable_waitable_new (
|
|
PIKA_WAITABLE (t_tool->histogram_async));
|
|
|
|
pika_wait (tool->tool_info->pika, waitable, _("Calculating histogram..."));
|
|
|
|
g_object_unref (waitable);
|
|
|
|
if (pika_async_is_synced (t_tool->histogram_async) &&
|
|
pika_async_is_finished (t_tool->histogram_async))
|
|
{
|
|
PikaHistogramChannel channel;
|
|
gint n_bins;
|
|
gdouble low;
|
|
|
|
g_object_get (PIKA_FILTER_TOOL (t_tool)->config,
|
|
"channel", &channel,
|
|
NULL);
|
|
|
|
n_bins = pika_histogram_n_bins (t_tool->histogram);
|
|
|
|
low = pika_histogram_get_threshold (t_tool->histogram,
|
|
channel,
|
|
0, n_bins - 1);
|
|
|
|
pika_histogram_view_set_range (t_tool->histogram_box->view,
|
|
low, n_bins - 1);
|
|
}
|
|
}
|
