gimp/app/widgets/gimpprogressbox.c

232 lines
7.0 KiB
C

/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimpprogressbox.c
* Copyright (C) 2004 Michael Natterer <mitch@gimp.org>
*
* 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 "libgimpmath/gimpmath.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "widgets-types.h"
#include "core/gimpprogress.h"
#include "gimpprogressbox.h"
#include "gimpwidgets-utils.h"
#include "gimp-intl.h"
static void gimp_progress_box_progress_iface_init (GimpProgressInterface *iface);
static void gimp_progress_box_dispose (GObject *object);
static GimpProgress *
gimp_progress_box_progress_start (GimpProgress *progress,
gboolean cancellable,
const gchar *message);
static void gimp_progress_box_progress_end (GimpProgress *progress);
static gboolean gimp_progress_box_progress_is_active (GimpProgress *progress);
static void gimp_progress_box_progress_set_text (GimpProgress *progress,
const gchar *message);
static void gimp_progress_box_progress_set_value (GimpProgress *progress,
gdouble percentage);
static gdouble gimp_progress_box_progress_get_value (GimpProgress *progress);
static void gimp_progress_box_progress_pulse (GimpProgress *progress);
G_DEFINE_TYPE_WITH_CODE (GimpProgressBox, gimp_progress_box, GTK_TYPE_BOX,
G_IMPLEMENT_INTERFACE (GIMP_TYPE_PROGRESS,
gimp_progress_box_progress_iface_init))
#define parent_class gimp_progress_box_parent_class
static void
gimp_progress_box_class_init (GimpProgressBoxClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->dispose = gimp_progress_box_dispose;
}
static void
gimp_progress_box_init (GimpProgressBox *box)
{
gtk_orientable_set_orientation (GTK_ORIENTABLE (box),
GTK_ORIENTATION_VERTICAL);
gtk_box_set_spacing (GTK_BOX (box), 6);
box->progress = gtk_progress_bar_new ();
gtk_widget_set_size_request (box->progress, 250, 20);
gtk_box_pack_start (GTK_BOX (box), box->progress, FALSE, FALSE, 0);
gtk_widget_show (box->progress);
box->label = gtk_label_new ("");
gtk_label_set_ellipsize (GTK_LABEL (box->label), PANGO_ELLIPSIZE_MIDDLE);
gtk_label_set_xalign (GTK_LABEL (box->label), 0.0);
gimp_label_set_attributes (GTK_LABEL (box->label),
PANGO_ATTR_STYLE, PANGO_STYLE_ITALIC,
-1);
gtk_box_pack_start (GTK_BOX (box), box->label, FALSE, FALSE, 0);
gtk_widget_show (box->label);
}
static void
gimp_progress_box_progress_iface_init (GimpProgressInterface *iface)
{
iface->start = gimp_progress_box_progress_start;
iface->end = gimp_progress_box_progress_end;
iface->is_active = gimp_progress_box_progress_is_active;
iface->set_text = gimp_progress_box_progress_set_text;
iface->set_value = gimp_progress_box_progress_set_value;
iface->get_value = gimp_progress_box_progress_get_value;
iface->pulse = gimp_progress_box_progress_pulse;
}
static void
gimp_progress_box_dispose (GObject *object)
{
GimpProgressBox *box = GIMP_PROGRESS_BOX (object);
G_OBJECT_CLASS (parent_class)->dispose (object);
box->progress = NULL;
}
static GimpProgress *
gimp_progress_box_progress_start (GimpProgress *progress,
gboolean cancellable,
const gchar *message)
{
GimpProgressBox *box = GIMP_PROGRESS_BOX (progress);
if (! box->progress)
return NULL;
if (! box->active)
{
GtkProgressBar *bar = GTK_PROGRESS_BAR (box->progress);
gtk_label_set_text (GTK_LABEL (box->label), message);
gtk_progress_bar_set_fraction (bar, 0.0);
box->active = TRUE;
box->cancellable = cancellable;
box->value = 0.0;
return progress;
}
return NULL;
}
static void
gimp_progress_box_progress_end (GimpProgress *progress)
{
if (gimp_progress_box_progress_is_active (progress))
{
GimpProgressBox *box = GIMP_PROGRESS_BOX (progress);
GtkProgressBar *bar = GTK_PROGRESS_BAR (box->progress);
gtk_label_set_text (GTK_LABEL (box->label), "");
gtk_progress_bar_set_fraction (bar, 0.0);
box->active = FALSE;
box->cancellable = FALSE;
box->value = 0.0;
}
}
static gboolean
gimp_progress_box_progress_is_active (GimpProgress *progress)
{
GimpProgressBox *box = GIMP_PROGRESS_BOX (progress);
return (box->progress && box->active);
}
static void
gimp_progress_box_progress_set_text (GimpProgress *progress,
const gchar *message)
{
if (gimp_progress_box_progress_is_active (progress))
{
GimpProgressBox *box = GIMP_PROGRESS_BOX (progress);
gtk_label_set_text (GTK_LABEL (box->label), message);
}
}
static void
gimp_progress_box_progress_set_value (GimpProgress *progress,
gdouble percentage)
{
if (gimp_progress_box_progress_is_active (progress))
{
GimpProgressBox *box = GIMP_PROGRESS_BOX (progress);
GtkProgressBar *bar = GTK_PROGRESS_BAR (box->progress);
GtkAllocation allocation;
gtk_widget_get_allocation (GTK_WIDGET (bar), &allocation);
box->value = percentage;
/* only update the progress bar if this causes a visible change */
if (fabs (allocation.width *
(percentage - gtk_progress_bar_get_fraction (bar))) > 1.0)
{
gtk_progress_bar_set_fraction (bar, box->value);
}
}
}
static gdouble
gimp_progress_box_progress_get_value (GimpProgress *progress)
{
if (gimp_progress_box_progress_is_active (progress))
{
return GIMP_PROGRESS_BOX (progress)->value;
}
return 0.0;
}
static void
gimp_progress_box_progress_pulse (GimpProgress *progress)
{
if (gimp_progress_box_progress_is_active (progress))
{
GimpProgressBox *box = GIMP_PROGRESS_BOX (progress);
GtkProgressBar *bar = GTK_PROGRESS_BAR (box->progress);
gtk_progress_bar_pulse (bar);
}
}
GtkWidget *
gimp_progress_box_new (void)
{
return g_object_new (GIMP_TYPE_PROGRESS_BOX, NULL);
}