4ac59f842f
Adapt step and page increments of histogram box spin buttons adjustment according to the number of histogram bins.
318 lines
10 KiB
C
318 lines
10 KiB
C
/* GIMP - The GNU Image Manipulation Program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <string.h>
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#include <gegl.h>
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#include <gtk/gtk.h>
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#include "libgimpmath/gimpmath.h"
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#include "libgimpwidgets/gimpwidgets.h"
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#include "widgets-types.h"
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#include "core/gimphistogram.h"
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#include "gimpcolorbar.h"
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#include "gimphandlebar.h"
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#include "gimphistogrambox.h"
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#include "gimphistogramview.h"
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#include "gimp-intl.h"
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/* #define DEBUG_VIEW */
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#define GRADIENT_HEIGHT 12
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#define CONTROL_HEIGHT 10
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/* local function prototypes */
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static void gimp_histogram_box_low_adj_update (GtkAdjustment *adj,
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GimpHistogramBox *box);
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static void gimp_histogram_box_high_adj_update (GtkAdjustment *adj,
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GimpHistogramBox *box);
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static void gimp_histogram_box_histogram_range (GimpHistogramView *view,
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gint start,
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gint end,
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GimpHistogramBox *box);
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static void gimp_histogram_box_channel_notify (GimpHistogramView *view,
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GParamSpec *pspec,
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GimpHistogramBox *box);
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static void gimp_histogram_box_border_notify (GimpHistogramView *view,
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GParamSpec *pspec,
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GimpHistogramBox *box);
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G_DEFINE_TYPE (GimpHistogramBox, gimp_histogram_box, GTK_TYPE_BOX)
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static void
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gimp_histogram_box_class_init (GimpHistogramBoxClass *klass)
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{
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}
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static void
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gimp_histogram_box_init (GimpHistogramBox *box)
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{
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GtkWidget *hbox;
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GtkWidget *vbox;
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GtkWidget *vbox2;
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GtkWidget *frame;
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GtkWidget *view;
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GtkWidget *bar;
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box->n_bins = 256;
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gtk_orientable_set_orientation (GTK_ORIENTABLE (box),
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GTK_ORIENTATION_VERTICAL);
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gtk_box_set_spacing (GTK_BOX (box), 2);
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frame = gtk_frame_new (NULL);
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gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
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gtk_box_pack_start (GTK_BOX (box), frame, TRUE, TRUE, 0);
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gtk_widget_show (frame);
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vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
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gtk_container_add (GTK_CONTAINER (frame), vbox);
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gtk_widget_show (vbox);
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/* The histogram */
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view = gimp_histogram_view_new (TRUE);
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gtk_box_pack_start (GTK_BOX (vbox), view, TRUE, TRUE, 0);
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gtk_widget_show (view);
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g_signal_connect (view, "range-changed",
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G_CALLBACK (gimp_histogram_box_histogram_range),
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box);
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box->view = GIMP_HISTOGRAM_VIEW (view);
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/* The gradient below the histogram */
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vbox2 = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
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gtk_container_set_border_width (GTK_CONTAINER (vbox2),
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GIMP_HISTOGRAM_VIEW (view)->border_width);
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gtk_box_pack_start (GTK_BOX (vbox), vbox2, FALSE, FALSE, 0);
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gtk_widget_show (vbox2);
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box->color_bar = bar = g_object_new (GIMP_TYPE_COLOR_BAR,
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"histogram-channel", box->view->channel,
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NULL);
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gtk_widget_set_size_request (bar, -1, GRADIENT_HEIGHT);
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gtk_box_pack_start (GTK_BOX (vbox2), bar, FALSE, FALSE, 0);
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gtk_widget_show (bar);
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g_signal_connect (view, "notify::histogram-channel",
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G_CALLBACK (gimp_histogram_box_channel_notify),
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box);
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g_signal_connect (view, "notify::border-width",
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G_CALLBACK (gimp_histogram_box_border_notify),
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box);
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box->slider_bar = bar = g_object_new (GIMP_TYPE_HANDLE_BAR, NULL);
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gtk_widget_set_size_request (bar, -1, CONTROL_HEIGHT);
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gtk_box_pack_start (GTK_BOX (vbox2), bar, FALSE, FALSE, 0);
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gtk_widget_show (bar);
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gimp_handle_bar_connect_events (GIMP_HANDLE_BAR (box->slider_bar),
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box->color_bar);
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/* The range selection */
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hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
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gtk_box_pack_start (GTK_BOX (box), hbox, FALSE, FALSE, 0);
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gtk_widget_show (hbox);
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/* low spinbutton */
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box->low_adj = (GtkAdjustment *)
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gtk_adjustment_new (0.0, 0.0, 255.0, 1.0, 16.0, 0.0);
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box->low_spinbutton = gtk_spin_button_new (box->low_adj, 1.0, 0);
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gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (box->low_spinbutton), TRUE);
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gtk_box_pack_start (GTK_BOX (hbox), box->low_spinbutton, FALSE, FALSE, 0);
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gtk_widget_show (box->low_spinbutton);
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g_signal_connect (box->low_adj, "value-changed",
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G_CALLBACK (gimp_histogram_box_low_adj_update),
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box);
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gimp_handle_bar_set_adjustment (GIMP_HANDLE_BAR (bar), 0,
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GTK_ADJUSTMENT (box->low_adj));
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/* high spinbutton */
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box->high_adj = (GtkAdjustment *)
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gtk_adjustment_new (255.0, 0.0, 255.0, 1.0, 16.0, 0.0);
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box->high_spinbutton = gtk_spin_button_new (box->high_adj, 1.0, 0);
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gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (box->high_spinbutton), TRUE);
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gtk_box_pack_end (GTK_BOX (hbox), box->high_spinbutton, FALSE, FALSE, 0);
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gtk_widget_show (box->high_spinbutton);
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g_signal_connect (box->high_adj, "value-changed",
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G_CALLBACK (gimp_histogram_box_high_adj_update),
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box);
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gimp_handle_bar_set_adjustment (GIMP_HANDLE_BAR (bar), 2,
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GTK_ADJUSTMENT (box->high_adj));
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#ifdef DEBUG_VIEW
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spinbutton = gimp_prop_spin_button_new (G_OBJECT (box->view), "border-width",
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1, 5, 0);
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gtk_box_pack_start (GTK_BOX (hbox), spinbutton, FALSE, FALSE, 0);
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gtk_widget_show (spinbutton);
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spinbutton = gimp_prop_spin_button_new (G_OBJECT (box->view), "subdivisions",
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1, 5, 0);
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gtk_box_pack_start (GTK_BOX (hbox), spinbutton, FALSE, FALSE, 0);
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gtk_widget_show (spinbutton);
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#endif
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}
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static void
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gimp_histogram_box_low_adj_update (GtkAdjustment *adjustment,
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GimpHistogramBox *box)
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{
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gdouble value = gtk_adjustment_get_value (adjustment);
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gtk_adjustment_set_lower (box->high_adj, value);
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if (box->n_bins != 256)
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value *= box->n_bins - 1;
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value = ROUND (value);
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if (box->view->start != value)
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gimp_histogram_view_set_range (box->view, value, box->view->end);
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}
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static void
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gimp_histogram_box_high_adj_update (GtkAdjustment *adjustment,
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GimpHistogramBox *box)
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{
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gdouble value = gtk_adjustment_get_value (adjustment);
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gtk_adjustment_set_upper (box->low_adj, value);
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if (box->n_bins != 256)
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value *= box->n_bins - 1;
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value = ROUND (value);
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if (box->view->end != value)
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gimp_histogram_view_set_range (box->view, box->view->start, value);
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}
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static void
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gimp_histogram_box_histogram_range (GimpHistogramView *view,
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gint start,
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gint end,
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GimpHistogramBox *box)
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{
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gdouble s = start;
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gdouble e = end;
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if (box->n_bins != view->n_bins)
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{
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gdouble upper;
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gdouble page_increment;
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gdouble step_increment;
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guint digits;
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box->n_bins = view->n_bins;
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if (box->n_bins == 256)
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{
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digits = 0;
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upper = 255.0;
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step_increment = 1.0;
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page_increment = 16.0;
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}
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else
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{
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digits = 3;
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upper = 1.0;
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step_increment = 0.01;
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page_increment = 0.1;
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}
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g_object_set (G_OBJECT (box->high_adj),
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"upper", upper,
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"step-increment", step_increment,
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"page-increment", page_increment,
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NULL);
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gtk_spin_button_set_digits (GTK_SPIN_BUTTON (box->high_spinbutton), digits);
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g_object_set (G_OBJECT (box->low_adj),
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"step-increment", step_increment,
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"page-increment", page_increment,
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NULL);
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gtk_spin_button_set_digits (GTK_SPIN_BUTTON (box->low_spinbutton), digits);
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}
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if (box->n_bins != 256)
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{
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s /= box->n_bins - 1;
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e /= box->n_bins - 1;
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}
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gtk_adjustment_set_lower (box->high_adj, s);
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gtk_adjustment_set_upper (box->low_adj, e);
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gtk_adjustment_set_value (box->low_adj, s);
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gtk_adjustment_set_value (box->high_adj, e);
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}
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static void
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gimp_histogram_box_channel_notify (GimpHistogramView *view,
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GParamSpec *pspec,
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GimpHistogramBox *box)
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{
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gimp_color_bar_set_channel (GIMP_COLOR_BAR (box->color_bar), view->channel);
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}
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static void
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gimp_histogram_box_border_notify (GimpHistogramView *view,
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GParamSpec *pspec,
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GimpHistogramBox *box)
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{
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GtkWidget *vbox = gtk_widget_get_parent (box->color_bar);
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gtk_container_set_border_width (GTK_CONTAINER (vbox), view->border_width);
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}
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/* public functions */
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GtkWidget *
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gimp_histogram_box_new (void)
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{
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return g_object_new (GIMP_TYPE_HISTOGRAM_BOX, NULL);
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}
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void
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gimp_histogram_box_set_channel (GimpHistogramBox *box,
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GimpHistogramChannel channel)
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{
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g_return_if_fail (GIMP_IS_HISTOGRAM_BOX (box));
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if (box->view)
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gimp_histogram_view_set_channel (box->view, channel);
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}
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