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gimp/app/core/gimpsubprogress.c

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/* GIMP - The GNU Image Manipulation Program
* 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 <glib-object.h>
#include "core-types.h"
#include "core/gimpsubprogress.h"
#include "core/gimpprogress.h"
enum
{
PROP_0,
PROP_PROGRESS
};
static void gimp_sub_progress_iface_init (GimpProgressInterface *iface);
static void gimp_sub_progress_finalize (GObject *object);
static void gimp_sub_progress_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void gimp_sub_progress_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
static GimpProgress * gimp_sub_progress_start (GimpProgress *progress,
gboolean cancellable,
const gchar *message);
static void gimp_sub_progress_end (GimpProgress *progress);
static gboolean gimp_sub_progress_is_active (GimpProgress *progress);
static void gimp_sub_progress_set_text (GimpProgress *progress,
const gchar *message);
static void gimp_sub_progress_set_value (GimpProgress *progress,
gdouble percentage);
static gdouble gimp_sub_progress_get_value (GimpProgress *progress);
static void gimp_sub_progress_pulse (GimpProgress *progress);
static GBytes * gimp_sub_progress_get_window_id (GimpProgress *progress);
static gboolean gimp_sub_progress_message (GimpProgress *progress,
Gimp *gimp,
GimpMessageSeverity severity,
const gchar *domain,
const gchar *message);
G_DEFINE_TYPE_WITH_CODE (GimpSubProgress, gimp_sub_progress, G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (GIMP_TYPE_PROGRESS,
gimp_sub_progress_iface_init))
#define parent_class gimp_sub_progress_parent_class
static void
gimp_sub_progress_class_init (GimpSubProgressClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = gimp_sub_progress_finalize;
object_class->set_property = gimp_sub_progress_set_property;
object_class->get_property = gimp_sub_progress_get_property;
g_object_class_install_property (object_class, PROP_PROGRESS,
g_param_spec_object ("progress",
NULL, NULL,
GIMP_TYPE_PROGRESS,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY));
}
static void
gimp_sub_progress_init (GimpSubProgress *sub)
{
sub->progress = NULL;
sub->start = 0.0;
sub->end = 1.0;
}
static void
gimp_sub_progress_finalize (GObject *object)
{
GimpSubProgress *sub = GIMP_SUB_PROGRESS (object);
g_clear_object (&sub->progress);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gimp_sub_progress_iface_init (GimpProgressInterface *iface)
{
iface->start = gimp_sub_progress_start;
iface->end = gimp_sub_progress_end;
iface->is_active = gimp_sub_progress_is_active;
iface->set_text = gimp_sub_progress_set_text;
iface->set_value = gimp_sub_progress_set_value;
iface->get_value = gimp_sub_progress_get_value;
iface->pulse = gimp_sub_progress_pulse;
iface->get_window_id = gimp_sub_progress_get_window_id;
iface->message = gimp_sub_progress_message;
}
static void
gimp_sub_progress_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GimpSubProgress *sub = GIMP_SUB_PROGRESS (object);
switch (property_id)
{
case PROP_PROGRESS:
g_return_if_fail (sub->progress == NULL);
sub->progress = g_value_dup_object (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gimp_sub_progress_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GimpSubProgress *sub = GIMP_SUB_PROGRESS (object);
switch (property_id)
{
case PROP_PROGRESS:
g_value_set_object (value, sub->progress);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static GimpProgress *
gimp_sub_progress_start (GimpProgress *progress,
gboolean cancellable,
const gchar *message)
{
/* does nothing */
return NULL;
}
static void
gimp_sub_progress_end (GimpProgress *progress)
{
/* does nothing */
}
static gboolean
gimp_sub_progress_is_active (GimpProgress *progress)
{
GimpSubProgress *sub = GIMP_SUB_PROGRESS (progress);
if (sub->progress)
return gimp_progress_is_active (sub->progress);
return FALSE;
}
static void
gimp_sub_progress_set_text (GimpProgress *progress,
const gchar *message)
{
/* does nothing */
}
static void
gimp_sub_progress_set_value (GimpProgress *progress,
gdouble percentage)
{
GimpSubProgress *sub = GIMP_SUB_PROGRESS (progress);
if (sub->progress)
gimp_progress_set_value (sub->progress,
sub->start + percentage * (sub->end - sub->start));
}
static gdouble
gimp_sub_progress_get_value (GimpProgress *progress)
{
GimpSubProgress *sub = GIMP_SUB_PROGRESS (progress);
if (sub->progress)
return gimp_progress_get_value (sub->progress);
return 0.0;
}
static void
gimp_sub_progress_pulse (GimpProgress *progress)
{
GimpSubProgress *sub = GIMP_SUB_PROGRESS (progress);
if (sub->progress)
gimp_progress_pulse (sub->progress);
}
static GBytes *
gimp_sub_progress_get_window_id (GimpProgress *progress)
{
GimpSubProgress *sub = GIMP_SUB_PROGRESS (progress);
if (sub->progress)
return gimp_progress_get_window_id (sub->progress);
return NULL;
}
static gboolean
gimp_sub_progress_message (GimpProgress *progress,
Gimp *gimp,
GimpMessageSeverity severity,
const gchar *domain,
const gchar *message)
{
GimpSubProgress *sub = GIMP_SUB_PROGRESS (progress);
if (sub->progress)
return gimp_progress_message (sub->progress,
gimp, severity, domain, message);
return FALSE;
}
/**
* gimp_sub_progress_new:
* @progress: parent progress or %NULL
*
* GimpSubProgress implements the GimpProgress interface and can be
* used wherever a GimpProgress is needed. It maps progress
* information to a sub-range of its parent @progress. This is useful
* when an action breaks down into multiple sub-actions that itself
* need a #GimpProgress pointer. See gimp_image_scale() for an example.
*
* Returns: a new #GimpProgress object
*/
GimpProgress *
gimp_sub_progress_new (GimpProgress *progress)
{
GimpSubProgress *sub;
g_return_val_if_fail (progress == NULL || GIMP_IS_PROGRESS (progress), NULL);
sub = g_object_new (GIMP_TYPE_SUB_PROGRESS,
"progress", progress,
NULL);
return GIMP_PROGRESS (sub);
}
/**
* gimp_sub_progress_set_range:
* @start: start value of range on the parent process
* @end: end value of range on the parent process
*
* Sets a range on the parent progress that this @progress should be
* mapped to.
*/
void
gimp_sub_progress_set_range (GimpSubProgress *progress,
gdouble start,
gdouble end)
{
g_return_if_fail (GIMP_IS_SUB_PROGRESS (progress));
g_return_if_fail (start < end);
progress->start = start;
progress->end = end;
}
/**
* gimp_sub_progress_set_step:
* @index: step index
* @num_steps: number of steps
*
* A more convenient form of gimp_sub_progress_set_range().
*/
void
gimp_sub_progress_set_step (GimpSubProgress *progress,
gint index,
gint num_steps)
{
g_return_if_fail (GIMP_IS_SUB_PROGRESS (progress));
g_return_if_fail (index < num_steps && num_steps > 0);
progress->start = (gdouble) index / num_steps;
progress->end = (gdouble) (index + 1) / num_steps;
}
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