316 lines
10 KiB
C
316 lines
10 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 <string.h>
|
|
|
|
#include <gegl.h>
|
|
#include <gtk/gtk.h>
|
|
|
|
#include "libpikamath/pikamath.h"
|
|
#include "libpikawidgets/pikawidgets.h"
|
|
|
|
#include "widgets-types.h"
|
|
|
|
#include "core/pikahistogram.h"
|
|
|
|
#include "pikacolorbar.h"
|
|
#include "pikahandlebar.h"
|
|
#include "pikahistogrambox.h"
|
|
#include "pikahistogramview.h"
|
|
|
|
#include "pika-intl.h"
|
|
|
|
|
|
/* #define DEBUG_VIEW */
|
|
|
|
#define GRADIENT_HEIGHT 12
|
|
#define CONTROL_HEIGHT 10
|
|
|
|
|
|
/* local function prototypes */
|
|
|
|
static void pika_histogram_box_low_adj_update (GtkAdjustment *adj,
|
|
PikaHistogramBox *box);
|
|
static void pika_histogram_box_high_adj_update (GtkAdjustment *adj,
|
|
PikaHistogramBox *box);
|
|
static void pika_histogram_box_histogram_range (PikaHistogramView *view,
|
|
gint start,
|
|
gint end,
|
|
PikaHistogramBox *box);
|
|
static void pika_histogram_box_channel_notify (PikaHistogramView *view,
|
|
GParamSpec *pspec,
|
|
PikaHistogramBox *box);
|
|
static void pika_histogram_box_border_notify (PikaHistogramView *view,
|
|
GParamSpec *pspec,
|
|
PikaHistogramBox *box);
|
|
|
|
|
|
G_DEFINE_TYPE (PikaHistogramBox, pika_histogram_box, GTK_TYPE_BOX)
|
|
|
|
|
|
static void
|
|
pika_histogram_box_class_init (PikaHistogramBoxClass *klass)
|
|
{
|
|
}
|
|
|
|
static void
|
|
pika_histogram_box_init (PikaHistogramBox *box)
|
|
{
|
|
GtkWidget *hbox;
|
|
GtkWidget *vbox;
|
|
GtkWidget *vbox2;
|
|
GtkWidget *frame;
|
|
GtkWidget *view;
|
|
GtkWidget *bar;
|
|
|
|
box->n_bins = 256;
|
|
|
|
gtk_orientable_set_orientation (GTK_ORIENTABLE (box),
|
|
GTK_ORIENTATION_VERTICAL);
|
|
|
|
gtk_box_set_spacing (GTK_BOX (box), 2);
|
|
|
|
frame = gtk_frame_new (NULL);
|
|
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
|
|
gtk_box_pack_start (GTK_BOX (box), frame, TRUE, TRUE, 0);
|
|
gtk_widget_show (frame);
|
|
|
|
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
|
|
gtk_container_add (GTK_CONTAINER (frame), vbox);
|
|
gtk_widget_show (vbox);
|
|
|
|
/* The histogram */
|
|
view = pika_histogram_view_new (TRUE);
|
|
gtk_box_pack_start (GTK_BOX (vbox), view, TRUE, TRUE, 0);
|
|
gtk_widget_show (view);
|
|
|
|
g_signal_connect (view, "range-changed",
|
|
G_CALLBACK (pika_histogram_box_histogram_range),
|
|
box);
|
|
|
|
box->view = PIKA_HISTOGRAM_VIEW (view);
|
|
|
|
/* The gradient below the histogram */
|
|
vbox2 = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
|
|
gtk_container_set_border_width (GTK_CONTAINER (vbox2),
|
|
PIKA_HISTOGRAM_VIEW (view)->border_width);
|
|
gtk_box_pack_start (GTK_BOX (vbox), vbox2, FALSE, FALSE, 0);
|
|
gtk_widget_show (vbox2);
|
|
|
|
box->color_bar = bar = g_object_new (PIKA_TYPE_COLOR_BAR,
|
|
"histogram-channel", box->view->channel,
|
|
NULL);
|
|
gtk_widget_set_size_request (bar, -1, GRADIENT_HEIGHT);
|
|
gtk_box_pack_start (GTK_BOX (vbox2), bar, FALSE, FALSE, 0);
|
|
gtk_widget_show (bar);
|
|
|
|
g_signal_connect (view, "notify::histogram-channel",
|
|
G_CALLBACK (pika_histogram_box_channel_notify),
|
|
box);
|
|
g_signal_connect (view, "notify::border-width",
|
|
G_CALLBACK (pika_histogram_box_border_notify),
|
|
box);
|
|
|
|
box->slider_bar = bar = g_object_new (PIKA_TYPE_HANDLE_BAR, NULL);
|
|
gtk_widget_set_size_request (bar, -1, CONTROL_HEIGHT);
|
|
gtk_box_pack_start (GTK_BOX (vbox2), bar, FALSE, FALSE, 0);
|
|
gtk_widget_show (bar);
|
|
|
|
pika_handle_bar_connect_events (PIKA_HANDLE_BAR (box->slider_bar),
|
|
box->color_bar);
|
|
|
|
/* The range selection */
|
|
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
|
|
gtk_box_pack_start (GTK_BOX (box), hbox, FALSE, FALSE, 0);
|
|
gtk_widget_show (hbox);
|
|
|
|
/* low spinbutton */
|
|
box->low_adj = gtk_adjustment_new (0.0, 0.0, 255.0, 1.0, 16.0, 0.0);
|
|
box->low_spinbutton = pika_spin_button_new (box->low_adj, 1.0, 0);
|
|
gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (box->low_spinbutton), TRUE);
|
|
gtk_box_pack_start (GTK_BOX (hbox), box->low_spinbutton, FALSE, FALSE, 0);
|
|
gtk_widget_show (box->low_spinbutton);
|
|
|
|
g_signal_connect (box->low_adj, "value-changed",
|
|
G_CALLBACK (pika_histogram_box_low_adj_update),
|
|
box);
|
|
|
|
pika_handle_bar_set_adjustment (PIKA_HANDLE_BAR (bar), 0, box->low_adj);
|
|
|
|
/* high spinbutton */
|
|
box->high_adj = gtk_adjustment_new (255.0, 0.0, 255.0, 1.0, 16.0, 0.0);
|
|
box->high_spinbutton = pika_spin_button_new (box->high_adj, 1.0, 0);
|
|
gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (box->high_spinbutton), TRUE);
|
|
gtk_box_pack_end (GTK_BOX (hbox), box->high_spinbutton, FALSE, FALSE, 0);
|
|
gtk_widget_show (box->high_spinbutton);
|
|
|
|
g_signal_connect (box->high_adj, "value-changed",
|
|
G_CALLBACK (pika_histogram_box_high_adj_update),
|
|
box);
|
|
|
|
pika_handle_bar_set_adjustment (PIKA_HANDLE_BAR (bar), 2, box->high_adj);
|
|
|
|
#ifdef DEBUG_VIEW
|
|
spinbutton = pika_prop_spin_button_new (G_OBJECT (box->view), "border-width",
|
|
1, 5, 0);
|
|
gtk_box_pack_start (GTK_BOX (hbox), spinbutton, FALSE, FALSE, 0);
|
|
|
|
spinbutton = pika_prop_spin_button_new (G_OBJECT (box->view), "subdivisions",
|
|
1, 5, 0);
|
|
gtk_box_pack_start (GTK_BOX (hbox), spinbutton, FALSE, FALSE, 0);
|
|
#endif
|
|
}
|
|
|
|
static void
|
|
pika_histogram_box_low_adj_update (GtkAdjustment *adjustment,
|
|
PikaHistogramBox *box)
|
|
{
|
|
gdouble value = gtk_adjustment_get_value (adjustment);
|
|
|
|
gtk_adjustment_set_lower (box->high_adj, value);
|
|
|
|
if (box->n_bins != 256)
|
|
value *= box->n_bins - 1;
|
|
|
|
value = ROUND (value);
|
|
|
|
if (box->view->start != value)
|
|
pika_histogram_view_set_range (box->view, value, box->view->end);
|
|
}
|
|
|
|
static void
|
|
pika_histogram_box_high_adj_update (GtkAdjustment *adjustment,
|
|
PikaHistogramBox *box)
|
|
{
|
|
gdouble value = gtk_adjustment_get_value (adjustment);
|
|
|
|
gtk_adjustment_set_upper (box->low_adj, value);
|
|
|
|
if (box->n_bins != 256)
|
|
value *= box->n_bins - 1;
|
|
|
|
value = ROUND (value);
|
|
|
|
if (box->view->end != value)
|
|
pika_histogram_view_set_range (box->view, box->view->start, value);
|
|
}
|
|
|
|
static void
|
|
pika_histogram_box_histogram_range (PikaHistogramView *view,
|
|
gint start,
|
|
gint end,
|
|
PikaHistogramBox *box)
|
|
{
|
|
gdouble s = start;
|
|
gdouble e = end;
|
|
|
|
if (box->n_bins != view->n_bins)
|
|
{
|
|
gdouble upper;
|
|
gdouble page_increment;
|
|
gdouble step_increment;
|
|
guint digits;
|
|
|
|
box->n_bins = view->n_bins;
|
|
|
|
if (box->n_bins == 256)
|
|
{
|
|
digits = 0;
|
|
upper = 255.0;
|
|
step_increment = 1.0;
|
|
page_increment = 16.0;
|
|
}
|
|
else
|
|
{
|
|
digits = 3;
|
|
upper = 1.0;
|
|
step_increment = 0.01;
|
|
page_increment = 0.1;
|
|
}
|
|
|
|
g_object_set (G_OBJECT (box->high_adj),
|
|
"upper", upper,
|
|
"step-increment", step_increment,
|
|
"page-increment", page_increment,
|
|
NULL);
|
|
|
|
gtk_spin_button_set_digits (GTK_SPIN_BUTTON (box->high_spinbutton), digits);
|
|
|
|
g_object_set (G_OBJECT (box->low_adj),
|
|
"step-increment", step_increment,
|
|
"page-increment", page_increment,
|
|
NULL);
|
|
|
|
gtk_spin_button_set_digits (GTK_SPIN_BUTTON (box->low_spinbutton), digits);
|
|
}
|
|
|
|
if (box->n_bins != 256)
|
|
{
|
|
s /= box->n_bins - 1;
|
|
e /= box->n_bins - 1;
|
|
}
|
|
|
|
gtk_adjustment_set_lower (box->high_adj, s);
|
|
gtk_adjustment_set_upper (box->low_adj, e);
|
|
|
|
gtk_adjustment_set_value (box->low_adj, s);
|
|
gtk_adjustment_set_value (box->high_adj, e);
|
|
}
|
|
|
|
static void
|
|
pika_histogram_box_channel_notify (PikaHistogramView *view,
|
|
GParamSpec *pspec,
|
|
PikaHistogramBox *box)
|
|
{
|
|
pika_color_bar_set_channel (PIKA_COLOR_BAR (box->color_bar), view->channel);
|
|
}
|
|
|
|
static void
|
|
pika_histogram_box_border_notify (PikaHistogramView *view,
|
|
GParamSpec *pspec,
|
|
PikaHistogramBox *box)
|
|
{
|
|
GtkWidget *vbox = gtk_widget_get_parent (box->color_bar);
|
|
|
|
gtk_container_set_border_width (GTK_CONTAINER (vbox), view->border_width);
|
|
}
|
|
|
|
|
|
/* public functions */
|
|
|
|
GtkWidget *
|
|
pika_histogram_box_new (void)
|
|
{
|
|
return g_object_new (PIKA_TYPE_HISTOGRAM_BOX, NULL);
|
|
}
|
|
|
|
void
|
|
pika_histogram_box_set_channel (PikaHistogramBox *box,
|
|
PikaHistogramChannel channel)
|
|
{
|
|
g_return_if_fail (PIKA_IS_HISTOGRAM_BOX (box));
|
|
|
|
if (box->view)
|
|
pika_histogram_view_set_channel (box->view, channel);
|
|
}
|
