792 lines
27 KiB
C
792 lines
27 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 "libpikabase/pikabase.h"
|
|
#include "libpikawidgets/pikawidgets.h"
|
|
|
|
#include "widgets-types.h"
|
|
|
|
#include "core/pika.h"
|
|
#include "core/pikaasync.h"
|
|
#include "core/pikadrawable.h"
|
|
#include "core/pikadrawable-histogram.h"
|
|
#include "core/pikahistogram.h"
|
|
#include "core/pikaimage.h"
|
|
|
|
#include "pikadocked.h"
|
|
#include "pikahelp-ids.h"
|
|
#include "pikahistogrambox.h"
|
|
#include "pikahistogrameditor.h"
|
|
#include "pikahistogramview.h"
|
|
#include "pikapropwidgets.h"
|
|
#include "pikasessioninfo-aux.h"
|
|
#include "pikawidgets-utils.h"
|
|
|
|
#include "pika-intl.h"
|
|
|
|
|
|
enum
|
|
{
|
|
PROP_0,
|
|
PROP_TRC
|
|
};
|
|
|
|
|
|
static void pika_histogram_editor_docked_iface_init (PikaDockedInterface *iface);
|
|
|
|
static void pika_histogram_editor_finalize (GObject *object);
|
|
static void pika_histogram_editor_set_property (GObject *object,
|
|
guint property_id,
|
|
const GValue *value,
|
|
GParamSpec *pspec);
|
|
static void pika_histogram_editor_get_property (GObject *object,
|
|
guint property_id,
|
|
GValue *value,
|
|
GParamSpec *pspec);
|
|
|
|
static void pika_histogram_editor_set_aux_info (PikaDocked *docked,
|
|
GList *aux_info);
|
|
static GList * pika_histogram_editor_get_aux_info (PikaDocked *docked);
|
|
|
|
static void pika_histogram_editor_set_image (PikaImageEditor *editor,
|
|
PikaImage *image);
|
|
static void pika_histogram_editor_layer_changed (PikaImage *image,
|
|
PikaHistogramEditor *editor);
|
|
static void pika_histogram_editor_frozen_update (PikaHistogramEditor *editor,
|
|
const GParamSpec *pspec);
|
|
static void pika_histogram_editor_buffer_update (PikaHistogramEditor *editor,
|
|
const GParamSpec *pspec);
|
|
static void pika_histogram_editor_update (PikaHistogramEditor *editor);
|
|
|
|
static gboolean pika_histogram_editor_idle_update (PikaHistogramEditor *editor);
|
|
static gboolean pika_histogram_menu_sensitivity (gint value,
|
|
gpointer data);
|
|
static void pika_histogram_editor_menu_update (PikaHistogramEditor *editor);
|
|
static void pika_histogram_editor_name_update (PikaHistogramEditor *editor);
|
|
static void pika_histogram_editor_info_update (PikaHistogramEditor *editor);
|
|
|
|
static gboolean pika_histogram_editor_view_draw (PikaHistogramEditor *editor,
|
|
cairo_t *cr);
|
|
|
|
|
|
G_DEFINE_TYPE_WITH_CODE (PikaHistogramEditor, pika_histogram_editor,
|
|
PIKA_TYPE_IMAGE_EDITOR,
|
|
G_IMPLEMENT_INTERFACE (PIKA_TYPE_DOCKED,
|
|
pika_histogram_editor_docked_iface_init))
|
|
|
|
#define parent_class pika_histogram_editor_parent_class
|
|
|
|
static PikaDockedInterface *parent_docked_iface = NULL;
|
|
|
|
|
|
static void
|
|
pika_histogram_editor_class_init (PikaHistogramEditorClass *klass)
|
|
{
|
|
GObjectClass *object_class = G_OBJECT_CLASS (klass);
|
|
PikaImageEditorClass *image_editor_class = PIKA_IMAGE_EDITOR_CLASS (klass);
|
|
|
|
object_class->finalize = pika_histogram_editor_finalize;
|
|
object_class->set_property = pika_histogram_editor_set_property;
|
|
object_class->get_property = pika_histogram_editor_get_property;
|
|
|
|
image_editor_class->set_image = pika_histogram_editor_set_image;
|
|
|
|
g_object_class_install_property (object_class, PROP_TRC,
|
|
g_param_spec_enum ("trc",
|
|
_("Linear/Perceptual"),
|
|
NULL,
|
|
PIKA_TYPE_TRC_TYPE,
|
|
PIKA_TRC_LINEAR,
|
|
PIKA_PARAM_READWRITE |
|
|
G_PARAM_CONSTRUCT));
|
|
}
|
|
|
|
static void
|
|
pika_histogram_editor_init (PikaHistogramEditor *editor)
|
|
{
|
|
PikaHistogramView *view;
|
|
GtkWidget *hbox;
|
|
GtkWidget *label;
|
|
GtkWidget *menu;
|
|
GtkWidget *grid;
|
|
gint i;
|
|
|
|
const gchar *pika_histogram_editor_labels[] =
|
|
{
|
|
N_("Mean:"),
|
|
N_("Std dev:"),
|
|
N_("Median:"),
|
|
N_("Pixels:"),
|
|
N_("Count:"),
|
|
N_("Percentile:")
|
|
};
|
|
|
|
editor->box = pika_histogram_box_new ();
|
|
|
|
pika_editor_set_show_name (PIKA_EDITOR (editor), TRUE);
|
|
|
|
view = PIKA_HISTOGRAM_BOX (editor->box)->view;
|
|
|
|
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 4);
|
|
gtk_box_pack_start (GTK_BOX (editor), hbox, FALSE, FALSE, 0);
|
|
gtk_widget_show (hbox);
|
|
|
|
editor->menu = menu = pika_prop_enum_combo_box_new (G_OBJECT (view),
|
|
"histogram-channel",
|
|
0, 0);
|
|
pika_enum_combo_box_set_icon_prefix (PIKA_ENUM_COMBO_BOX (menu),
|
|
"pika-channel");
|
|
pika_int_combo_box_set_sensitivity (PIKA_INT_COMBO_BOX (editor->menu),
|
|
pika_histogram_menu_sensitivity,
|
|
editor, NULL);
|
|
pika_int_combo_box_set_active (PIKA_INT_COMBO_BOX (editor->menu),
|
|
view->channel);
|
|
gtk_box_pack_start (GTK_BOX (hbox), menu, FALSE, FALSE, 0);
|
|
|
|
pika_help_set_help_data (editor->menu,
|
|
_("Histogram channel"), NULL);
|
|
|
|
menu = pika_prop_enum_icon_box_new (G_OBJECT (view),
|
|
"histogram-scale", "pika-histogram",
|
|
0, 0);
|
|
gtk_box_pack_end (GTK_BOX (hbox), menu, FALSE, FALSE, 0);
|
|
|
|
menu = pika_prop_enum_icon_box_new (G_OBJECT (editor), "trc",
|
|
"pika-color-space",
|
|
-1, -1);
|
|
gtk_box_pack_end (GTK_BOX (hbox), menu, FALSE, FALSE, 0);
|
|
|
|
gtk_box_pack_start (GTK_BOX (editor), editor->box, TRUE, TRUE, 0);
|
|
gtk_widget_show (GTK_WIDGET (editor->box));
|
|
|
|
g_signal_connect_swapped (view, "range-changed",
|
|
G_CALLBACK (pika_histogram_editor_info_update),
|
|
editor);
|
|
g_signal_connect_swapped (view, "notify::histogram-channel",
|
|
G_CALLBACK (pika_histogram_editor_info_update),
|
|
editor);
|
|
|
|
g_signal_connect_swapped (view, "draw",
|
|
G_CALLBACK (pika_histogram_editor_view_draw),
|
|
editor);
|
|
|
|
grid = gtk_grid_new ();
|
|
gtk_grid_set_column_spacing (GTK_GRID (grid), 2);
|
|
gtk_box_pack_start (GTK_BOX (editor), grid, FALSE, FALSE, 0);
|
|
gtk_widget_show (grid);
|
|
|
|
for (i = 0; i < 6; i++)
|
|
{
|
|
gint x = (i / 3) * 2;
|
|
gint y = (i % 3);
|
|
|
|
label = gtk_label_new (gettext (pika_histogram_editor_labels[i]));
|
|
pika_label_set_attributes (GTK_LABEL (label),
|
|
PANGO_ATTR_WEIGHT, PANGO_WEIGHT_BOLD,
|
|
PANGO_ATTR_SCALE, PANGO_SCALE_SMALL,
|
|
-1);
|
|
gtk_label_set_xalign (GTK_LABEL (label), 1.0);
|
|
gtk_widget_set_hexpand (label, TRUE);
|
|
gtk_grid_attach (GTK_GRID (grid), label, x, y, 1, 1);
|
|
gtk_widget_show (label);
|
|
|
|
editor->labels[i] =
|
|
label = g_object_new (GTK_TYPE_LABEL,
|
|
"xalign", 0.0,
|
|
"yalign", 0.5,
|
|
"width-chars", i > 2 ? 9 : 5,
|
|
NULL);
|
|
pika_label_set_attributes (GTK_LABEL (editor->labels[i]),
|
|
PANGO_ATTR_SCALE, PANGO_SCALE_SMALL,
|
|
-1);
|
|
gtk_grid_attach (GTK_GRID (grid), label, x + 1, y, 1, 1);
|
|
gtk_widget_show (label);
|
|
}
|
|
}
|
|
|
|
static void
|
|
pika_histogram_editor_docked_iface_init (PikaDockedInterface *docked_iface)
|
|
{
|
|
parent_docked_iface = g_type_interface_peek_parent (docked_iface);
|
|
|
|
if (! parent_docked_iface)
|
|
parent_docked_iface = g_type_default_interface_peek (PIKA_TYPE_DOCKED);
|
|
|
|
docked_iface->set_aux_info = pika_histogram_editor_set_aux_info;
|
|
docked_iface->get_aux_info = pika_histogram_editor_get_aux_info;
|
|
}
|
|
|
|
static void
|
|
pika_histogram_editor_finalize (GObject *object)
|
|
{
|
|
if (PIKA_HISTOGRAM_EDITOR (object)->idle_id)
|
|
g_source_remove (PIKA_HISTOGRAM_EDITOR (object)->idle_id);
|
|
|
|
G_OBJECT_CLASS (parent_class)->finalize (object);
|
|
}
|
|
|
|
static void
|
|
pika_histogram_editor_set_property (GObject *object,
|
|
guint property_id,
|
|
const GValue *value,
|
|
GParamSpec *pspec)
|
|
{
|
|
PikaHistogramEditor *editor = PIKA_HISTOGRAM_EDITOR (object);
|
|
PikaHistogramView *view = PIKA_HISTOGRAM_BOX (editor->box)->view;
|
|
|
|
switch (property_id)
|
|
{
|
|
case PROP_TRC:
|
|
editor->trc = g_value_get_enum (value);
|
|
|
|
if (editor->histogram)
|
|
{
|
|
g_clear_object (&editor->histogram);
|
|
pika_histogram_view_set_histogram (view, NULL);
|
|
}
|
|
|
|
if (editor->bg_histogram)
|
|
{
|
|
g_clear_object (&editor->bg_histogram);
|
|
pika_histogram_view_set_background (view, NULL);
|
|
}
|
|
|
|
pika_histogram_editor_update (editor);
|
|
break;
|
|
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
pika_histogram_editor_get_property (GObject *object,
|
|
guint property_id,
|
|
GValue *value,
|
|
GParamSpec *pspec)
|
|
{
|
|
PikaHistogramEditor *editor = PIKA_HISTOGRAM_EDITOR (object);
|
|
|
|
switch (property_id)
|
|
{
|
|
case PROP_TRC:
|
|
g_value_set_enum (value, editor->trc);
|
|
break;
|
|
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
pika_histogram_editor_set_aux_info (PikaDocked *docked,
|
|
GList *aux_info)
|
|
{
|
|
PikaHistogramEditor *editor = PIKA_HISTOGRAM_EDITOR (docked);
|
|
PikaHistogramView *view = PIKA_HISTOGRAM_BOX (editor->box)->view;
|
|
|
|
parent_docked_iface->set_aux_info (docked, aux_info);
|
|
|
|
pika_session_info_aux_set_props (G_OBJECT (view), aux_info,
|
|
"histogram-channel",
|
|
"histogram-scale",
|
|
NULL);
|
|
}
|
|
|
|
static GList *
|
|
pika_histogram_editor_get_aux_info (PikaDocked *docked)
|
|
{
|
|
PikaHistogramEditor *editor = PIKA_HISTOGRAM_EDITOR (docked);
|
|
PikaHistogramView *view = PIKA_HISTOGRAM_BOX (editor->box)->view;
|
|
GList *aux_info;
|
|
|
|
aux_info = parent_docked_iface->get_aux_info (docked);
|
|
|
|
return g_list_concat (aux_info,
|
|
pika_session_info_aux_new_from_props (G_OBJECT (view),
|
|
"histogram-channel",
|
|
"histogram-scale",
|
|
NULL));
|
|
}
|
|
|
|
static void
|
|
pika_histogram_editor_set_image (PikaImageEditor *image_editor,
|
|
PikaImage *image)
|
|
{
|
|
PikaHistogramEditor *editor = PIKA_HISTOGRAM_EDITOR (image_editor);
|
|
PikaHistogramView *view = PIKA_HISTOGRAM_BOX (editor->box)->view;
|
|
|
|
if (image_editor->image)
|
|
{
|
|
if (editor->idle_id)
|
|
{
|
|
g_source_remove (editor->idle_id);
|
|
editor->idle_id = 0;
|
|
}
|
|
|
|
editor->update_pending = FALSE;
|
|
|
|
g_signal_handlers_disconnect_by_func (image_editor->image,
|
|
pika_histogram_editor_update,
|
|
editor);
|
|
g_signal_handlers_disconnect_by_func (image_editor->image,
|
|
pika_histogram_editor_layer_changed,
|
|
editor);
|
|
g_signal_handlers_disconnect_by_func (image_editor->image,
|
|
pika_histogram_editor_menu_update,
|
|
editor);
|
|
|
|
if (editor->histogram)
|
|
{
|
|
g_clear_object (&editor->histogram);
|
|
pika_histogram_view_set_histogram (view, NULL);
|
|
}
|
|
|
|
if (editor->bg_histogram)
|
|
{
|
|
g_clear_object (&editor->bg_histogram);
|
|
pika_histogram_view_set_background (view, NULL);
|
|
}
|
|
}
|
|
|
|
PIKA_IMAGE_EDITOR_CLASS (parent_class)->set_image (image_editor, image);
|
|
|
|
if (image)
|
|
{
|
|
g_signal_connect_object (image, "mode-changed",
|
|
G_CALLBACK (pika_histogram_editor_menu_update),
|
|
editor, G_CONNECT_SWAPPED);
|
|
g_signal_connect_object (image, "selected-layers-changed",
|
|
G_CALLBACK (pika_histogram_editor_layer_changed),
|
|
editor, 0);
|
|
g_signal_connect_object (image, "mask-changed",
|
|
G_CALLBACK (pika_histogram_editor_update),
|
|
editor, G_CONNECT_SWAPPED);
|
|
}
|
|
|
|
pika_histogram_editor_layer_changed (image, editor);
|
|
}
|
|
|
|
GtkWidget *
|
|
pika_histogram_editor_new (void)
|
|
{
|
|
return g_object_new (PIKA_TYPE_HISTOGRAM_EDITOR, NULL);
|
|
}
|
|
|
|
static void
|
|
pika_histogram_editor_layer_changed (PikaImage *image,
|
|
PikaHistogramEditor *editor)
|
|
{
|
|
if (editor->drawable)
|
|
{
|
|
PikaHistogramView *view = PIKA_HISTOGRAM_BOX (editor->box)->view;
|
|
|
|
if (editor->histogram)
|
|
{
|
|
g_clear_object (&editor->histogram);
|
|
pika_histogram_view_set_histogram (view, NULL);
|
|
}
|
|
|
|
if (editor->bg_histogram)
|
|
{
|
|
g_clear_object (&editor->bg_histogram);
|
|
pika_histogram_view_set_background (view, NULL);
|
|
}
|
|
|
|
g_signal_handlers_disconnect_by_func (editor->drawable,
|
|
pika_histogram_editor_name_update,
|
|
editor);
|
|
g_signal_handlers_disconnect_by_func (editor->drawable,
|
|
pika_histogram_editor_menu_update,
|
|
editor);
|
|
g_signal_handlers_disconnect_by_func (editor->drawable,
|
|
pika_histogram_editor_update,
|
|
editor);
|
|
g_signal_handlers_disconnect_by_func (editor->drawable,
|
|
pika_histogram_editor_buffer_update,
|
|
editor);
|
|
g_signal_handlers_disconnect_by_func (editor->drawable,
|
|
pika_histogram_editor_frozen_update,
|
|
editor);
|
|
editor->drawable = NULL;
|
|
}
|
|
|
|
if (image)
|
|
{
|
|
GList *layers;
|
|
|
|
layers = pika_image_get_selected_layers (image);
|
|
/*
|
|
* TODO: right now, we only support making an histogram for a single
|
|
* layer. In future, it would be nice to have the ability to make the
|
|
* histogram for:
|
|
* - all individual pixels of selected layers;
|
|
* - the merged composition of selected layers;
|
|
* - the visible image.
|
|
*/
|
|
editor->drawable = (g_list_length (layers) == 1 ? layers->data : NULL);
|
|
}
|
|
|
|
pika_histogram_editor_menu_update (editor);
|
|
|
|
if (editor->drawable)
|
|
{
|
|
g_signal_connect_object (editor->drawable, "notify::frozen",
|
|
G_CALLBACK (pika_histogram_editor_frozen_update),
|
|
editor, G_CONNECT_SWAPPED);
|
|
g_signal_connect_object (editor->drawable, "notify::buffer",
|
|
G_CALLBACK (pika_histogram_editor_buffer_update),
|
|
editor, G_CONNECT_SWAPPED);
|
|
g_signal_connect_object (editor->drawable, "update",
|
|
G_CALLBACK (pika_histogram_editor_update),
|
|
editor, G_CONNECT_SWAPPED);
|
|
g_signal_connect_object (editor->drawable, "alpha-changed",
|
|
G_CALLBACK (pika_histogram_editor_menu_update),
|
|
editor, G_CONNECT_SWAPPED);
|
|
g_signal_connect_object (editor->drawable, "name-changed",
|
|
G_CALLBACK (pika_histogram_editor_name_update),
|
|
editor, G_CONNECT_SWAPPED);
|
|
|
|
pika_histogram_editor_buffer_update (editor, NULL);
|
|
}
|
|
else if (editor->histogram)
|
|
{
|
|
editor->recompute = TRUE;
|
|
gtk_widget_queue_draw (GTK_WIDGET (editor->box));
|
|
}
|
|
|
|
pika_histogram_editor_info_update (editor);
|
|
pika_histogram_editor_name_update (editor);
|
|
}
|
|
|
|
static void
|
|
pika_histogram_editor_calculate_async_callback (PikaAsync *async,
|
|
PikaHistogramEditor *editor)
|
|
{
|
|
editor->calculate_async = NULL;
|
|
|
|
if (pika_async_is_finished (async) && editor->histogram)
|
|
{
|
|
if (editor->bg_pending)
|
|
{
|
|
PikaHistogramView *view = PIKA_HISTOGRAM_BOX (editor->box)->view;
|
|
|
|
editor->bg_histogram = pika_histogram_duplicate (editor->histogram);
|
|
|
|
pika_histogram_view_set_background (view, editor->bg_histogram);
|
|
}
|
|
|
|
pika_histogram_editor_info_update (editor);
|
|
}
|
|
|
|
editor->bg_pending = FALSE;
|
|
|
|
if (editor->update_pending)
|
|
pika_histogram_editor_update (editor);
|
|
}
|
|
|
|
static gboolean
|
|
pika_histogram_editor_validate (PikaHistogramEditor *editor)
|
|
{
|
|
if (editor->recompute || ! editor->histogram)
|
|
{
|
|
if (editor->drawable &&
|
|
/* avoid calculating the histogram of a detached layer. this can
|
|
* happen during pika_image_remove_layer(), as a result of a pending
|
|
* "expose-event" signal (handled in
|
|
* pika_histogram_editor_view_expose()) executed through
|
|
* gtk_tree_view_clamp_node_visible(), as a result of the
|
|
* PikaLayerTreeView in the Layers dialog receiving the image's
|
|
* "selected-layers-changed" signal before us. See bug #795716,
|
|
* comment 6.
|
|
*/
|
|
pika_item_is_attached (PIKA_ITEM (editor->drawable)))
|
|
{
|
|
PikaAsync *async;
|
|
|
|
if (! editor->histogram)
|
|
{
|
|
PikaHistogramView *view = PIKA_HISTOGRAM_BOX (editor->box)->view;
|
|
|
|
editor->histogram = pika_histogram_new (editor->trc);
|
|
|
|
pika_histogram_clear_values (
|
|
editor->histogram,
|
|
babl_format_get_n_components (
|
|
pika_drawable_get_format (editor->drawable)));
|
|
|
|
pika_histogram_view_set_histogram (view, editor->histogram);
|
|
}
|
|
|
|
async = pika_drawable_calculate_histogram_async (editor->drawable,
|
|
editor->histogram,
|
|
TRUE);
|
|
|
|
editor->calculate_async = async;
|
|
|
|
pika_async_add_callback (
|
|
async,
|
|
(PikaAsyncCallback) pika_histogram_editor_calculate_async_callback,
|
|
editor);
|
|
|
|
g_object_unref (async);
|
|
}
|
|
else if (editor->histogram)
|
|
{
|
|
pika_histogram_clear_values (editor->histogram, 0);
|
|
|
|
pika_histogram_editor_info_update (editor);
|
|
}
|
|
|
|
editor->recompute = FALSE;
|
|
|
|
if (editor->idle_id)
|
|
{
|
|
g_source_remove (editor->idle_id);
|
|
editor->idle_id = 0;
|
|
}
|
|
}
|
|
|
|
return (editor->histogram != NULL);
|
|
}
|
|
|
|
static void
|
|
pika_histogram_editor_frozen_update (PikaHistogramEditor *editor,
|
|
const GParamSpec *pspec)
|
|
{
|
|
PikaHistogramView *view = PIKA_HISTOGRAM_BOX (editor->box)->view;
|
|
|
|
if (pika_viewable_preview_is_frozen (PIKA_VIEWABLE (editor->drawable)))
|
|
{
|
|
/* Only do the background histogram if the histogram is visible.
|
|
* This is a workaround for the fact that recalculating the
|
|
* histogram is expensive and that it is only validated when it
|
|
* is shown. So don't slow down painting by doing something that
|
|
* is not even seen by the user.
|
|
*/
|
|
if (! editor->bg_histogram &&
|
|
gtk_widget_is_drawable (GTK_WIDGET (editor)))
|
|
{
|
|
if (editor->idle_id)
|
|
{
|
|
g_source_remove (editor->idle_id);
|
|
|
|
pika_histogram_editor_idle_update (editor);
|
|
}
|
|
|
|
if (pika_histogram_editor_validate (editor))
|
|
{
|
|
if (editor->calculate_async)
|
|
{
|
|
editor->bg_pending = TRUE;
|
|
}
|
|
else
|
|
{
|
|
editor->bg_histogram = pika_histogram_duplicate (
|
|
editor->histogram);
|
|
|
|
pika_histogram_view_set_background (view,
|
|
editor->bg_histogram);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (editor->bg_histogram)
|
|
{
|
|
g_clear_object (&editor->bg_histogram);
|
|
pika_histogram_view_set_background (view, NULL);
|
|
}
|
|
|
|
editor->bg_pending = FALSE;
|
|
|
|
if (editor->update_pending)
|
|
pika_async_cancel_and_wait (editor->calculate_async);
|
|
}
|
|
}
|
|
|
|
static void
|
|
pika_histogram_editor_buffer_update (PikaHistogramEditor *editor,
|
|
const GParamSpec *pspec)
|
|
{
|
|
g_object_set (editor,
|
|
"trc", pika_drawable_get_trc (editor->drawable),
|
|
NULL);
|
|
}
|
|
|
|
static void
|
|
pika_histogram_editor_update (PikaHistogramEditor *editor)
|
|
{
|
|
if (editor->bg_pending)
|
|
{
|
|
editor->update_pending = TRUE;
|
|
|
|
return;
|
|
}
|
|
|
|
editor->update_pending = FALSE;
|
|
|
|
if (editor->calculate_async)
|
|
pika_async_cancel_and_wait (editor->calculate_async);
|
|
|
|
if (editor->idle_id)
|
|
g_source_remove (editor->idle_id);
|
|
|
|
editor->idle_id =
|
|
g_timeout_add_full (G_PRIORITY_LOW,
|
|
200,
|
|
(GSourceFunc) pika_histogram_editor_idle_update,
|
|
editor,
|
|
NULL);
|
|
}
|
|
|
|
static gboolean
|
|
pika_histogram_editor_idle_update (PikaHistogramEditor *editor)
|
|
{
|
|
editor->idle_id = 0;
|
|
|
|
/* Mark the histogram for recomputation and queue a redraw.
|
|
* We will then recalculate the histogram when the view is exposed.
|
|
*/
|
|
editor->recompute = TRUE;
|
|
gtk_widget_queue_draw (GTK_WIDGET (editor->box));
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static gboolean
|
|
pika_histogram_menu_sensitivity (gint value,
|
|
gpointer data)
|
|
{
|
|
PikaHistogramEditor *editor = PIKA_HISTOGRAM_EDITOR (data);
|
|
PikaHistogramChannel channel = value;
|
|
|
|
if (editor->histogram)
|
|
return pika_histogram_has_channel (editor->histogram, channel);
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static void
|
|
pika_histogram_editor_menu_update (PikaHistogramEditor *editor)
|
|
{
|
|
PikaHistogramView *view = PIKA_HISTOGRAM_BOX (editor->box)->view;
|
|
|
|
gtk_widget_queue_draw (editor->menu);
|
|
|
|
if (editor->histogram &&
|
|
! pika_histogram_has_channel (editor->histogram, view->channel))
|
|
{
|
|
pika_histogram_view_set_channel (view, PIKA_HISTOGRAM_VALUE);
|
|
}
|
|
}
|
|
|
|
static void
|
|
pika_histogram_editor_name_update (PikaHistogramEditor *editor)
|
|
{
|
|
const gchar *name = NULL;
|
|
|
|
if (editor->drawable)
|
|
name = pika_object_get_name (editor->drawable);
|
|
|
|
pika_editor_set_name (PIKA_EDITOR (editor), name);
|
|
}
|
|
|
|
static void
|
|
pika_histogram_editor_info_update (PikaHistogramEditor *editor)
|
|
{
|
|
PikaHistogramView *view = PIKA_HISTOGRAM_BOX (editor->box)->view;
|
|
PikaHistogram *hist = editor->histogram;
|
|
|
|
if (hist)
|
|
{
|
|
gint n_bins;
|
|
gdouble pixels;
|
|
gdouble count;
|
|
gchar text[12];
|
|
|
|
n_bins = pika_histogram_n_bins (hist);
|
|
|
|
pixels = pika_histogram_get_count (hist, view->channel, 0, n_bins - 1);
|
|
count = pika_histogram_get_count (hist, view->channel,
|
|
view->start, view->end);
|
|
|
|
/* For the RGB histogram, we need to divide by three
|
|
* since it combines three histograms in one */
|
|
if (view->channel == PIKA_HISTOGRAM_RGB)
|
|
{
|
|
pixels /= 3;
|
|
count /= 3;
|
|
}
|
|
|
|
g_snprintf (text, sizeof (text), "%.3f",
|
|
pika_histogram_get_mean (hist, view->channel,
|
|
view->start, view->end));
|
|
gtk_label_set_text (GTK_LABEL (editor->labels[0]), text);
|
|
|
|
g_snprintf (text, sizeof (text), "%.3f",
|
|
pika_histogram_get_std_dev (hist, view->channel,
|
|
view->start, view->end));
|
|
gtk_label_set_text (GTK_LABEL (editor->labels[1]), text);
|
|
|
|
g_snprintf (text, sizeof (text), "%.3f",
|
|
pika_histogram_get_median (hist, view->channel,
|
|
view->start,
|
|
view->end));
|
|
gtk_label_set_text (GTK_LABEL (editor->labels[2]), text);
|
|
|
|
g_snprintf (text, sizeof (text), "%d", (gint) pixels);
|
|
gtk_label_set_text (GTK_LABEL (editor->labels[3]), text);
|
|
|
|
g_snprintf (text, sizeof (text), "%d", (gint) count);
|
|
gtk_label_set_text (GTK_LABEL (editor->labels[4]), text);
|
|
|
|
g_snprintf (text, sizeof (text), "%.1f", (pixels > 0 ?
|
|
(100.0 * count / pixels) :
|
|
0.0));
|
|
gtk_label_set_text (GTK_LABEL (editor->labels[5]), text);
|
|
}
|
|
else
|
|
{
|
|
gint i;
|
|
|
|
for (i = 0; i < 6; i++)
|
|
gtk_label_set_text (GTK_LABEL (editor->labels[i]), NULL);
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
pika_histogram_editor_view_draw (PikaHistogramEditor *editor,
|
|
cairo_t *cr)
|
|
{
|
|
pika_histogram_editor_validate (editor);
|
|
|
|
return FALSE;
|
|
}
|
