mirror of https://github.com/GNOME/gimp.git
258 lines
7.7 KiB
C
258 lines
7.7 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 2 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, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "config.h"
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#include <glib-object.h>
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#include "core-types.h"
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#include "core/gimpsubprogress.h"
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#include "core/gimpprogress.h"
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static void gimp_sub_progress_iface_init (GimpProgressInterface *iface);
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static void gimp_sub_progress_finalize (GObject *object);
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static GimpProgress * gimp_sub_progress_start (GimpProgress *progress,
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const gchar *message,
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gboolean cancelable);
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static void gimp_sub_progress_end (GimpProgress *progress);
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static gboolean gimp_sub_progress_is_active (GimpProgress *progress);
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static void gimp_sub_progress_set_text (GimpProgress *progress,
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const gchar *message);
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static void gimp_sub_progress_set_value (GimpProgress *progress,
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gdouble percentage);
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static gdouble gimp_sub_progress_get_value (GimpProgress *progress);
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static void gimp_sub_progress_pulse (GimpProgress *progress);
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static guint32 gimp_sub_progress_get_window (GimpProgress *progress);
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static gboolean gimp_sub_progress_message (GimpProgress *progress,
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Gimp *gimp,
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GimpMessageSeverity severity,
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const gchar *domain,
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const gchar *message);
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G_DEFINE_TYPE_WITH_CODE (GimpSubProgress, gimp_sub_progress, G_TYPE_OBJECT,
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G_IMPLEMENT_INTERFACE (GIMP_TYPE_PROGRESS,
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gimp_sub_progress_iface_init))
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#define parent_class gimp_sub_progress_parent_class
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static void
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gimp_sub_progress_class_init (GimpSubProgressClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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object_class->finalize = gimp_sub_progress_finalize;
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}
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static void
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gimp_sub_progress_init (GimpSubProgress *sub)
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{
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sub->progress = NULL;
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sub->start = 0.0;
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sub->end = 1.0;
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}
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static void
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gimp_sub_progress_finalize (GObject *object)
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{
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GimpSubProgress *sub = GIMP_SUB_PROGRESS (object);
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if (sub->progress)
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{
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g_object_unref (sub->progress);
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sub->progress = NULL;
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}
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static void
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gimp_sub_progress_iface_init (GimpProgressInterface *iface)
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{
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iface->start = gimp_sub_progress_start;
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iface->end = gimp_sub_progress_end;
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iface->is_active = gimp_sub_progress_is_active;
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iface->set_text = gimp_sub_progress_set_text;
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iface->set_value = gimp_sub_progress_set_value;
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iface->get_value = gimp_sub_progress_get_value;
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iface->pulse = gimp_sub_progress_pulse;
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iface->get_window = gimp_sub_progress_get_window;
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iface->message = gimp_sub_progress_message;
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}
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static GimpProgress *
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gimp_sub_progress_start (GimpProgress *progress,
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const gchar *message,
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gboolean cancelable)
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{
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/* does nothing */
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return NULL;
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}
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static void
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gimp_sub_progress_end (GimpProgress *progress)
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{
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/* does nothing */
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}
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static gboolean
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gimp_sub_progress_is_active (GimpProgress *progress)
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{
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GimpSubProgress *sub = GIMP_SUB_PROGRESS (progress);
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if (sub->progress)
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return gimp_progress_is_active (sub->progress);
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return FALSE;
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}
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static void
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gimp_sub_progress_set_text (GimpProgress *progress,
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const gchar *message)
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{
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/* does nothing */
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}
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static void
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gimp_sub_progress_set_value (GimpProgress *progress,
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gdouble percentage)
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{
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GimpSubProgress *sub = GIMP_SUB_PROGRESS (progress);
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if (sub->progress)
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gimp_progress_set_value (sub->progress,
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sub->start + percentage * (sub->end - sub->start));
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}
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static gdouble
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gimp_sub_progress_get_value (GimpProgress *progress)
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{
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GimpSubProgress *sub = GIMP_SUB_PROGRESS (progress);
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if (sub->progress)
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return gimp_progress_get_value (sub->progress);
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return 0.0;
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}
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static void
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gimp_sub_progress_pulse (GimpProgress *progress)
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{
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GimpSubProgress *sub = GIMP_SUB_PROGRESS (progress);
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if (sub->progress)
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gimp_progress_pulse (sub->progress);
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}
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static guint32
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gimp_sub_progress_get_window (GimpProgress *progress)
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{
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GimpSubProgress *sub = GIMP_SUB_PROGRESS (progress);
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if (sub->progress)
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return gimp_progress_get_window (sub->progress);
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return 0;
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}
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static gboolean
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gimp_sub_progress_message (GimpProgress *progress,
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Gimp *gimp,
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GimpMessageSeverity severity,
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const gchar *domain,
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const gchar *message)
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{
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GimpSubProgress *sub = GIMP_SUB_PROGRESS (progress);
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if (sub->progress)
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return gimp_progress_message (sub->progress,
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gimp, severity, domain, message);
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return FALSE;
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}
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/**
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* gimp_sub_progress_new:
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* @progress: parent progress or %NULL
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*
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* GimpSubProgress implements the GimpProgress interface and can be
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* used whereever a GimpProgress is needed. It maps progress
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* information to a sub-range of its parent @progress. This is useful
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* when an action breaks down into multiple sub-actions that itself
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* need a #GimpProgress pointer. See gimp_image_scale() for an example.
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*
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* Return value: a new #GimpProgress object
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*/
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GimpProgress *
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gimp_sub_progress_new (GimpProgress *progress)
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{
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GimpSubProgress *sub;
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g_return_val_if_fail (progress == NULL || GIMP_IS_PROGRESS (progress), NULL);
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sub = g_object_new (GIMP_TYPE_SUB_PROGRESS, NULL);
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if (progress)
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sub->progress = g_object_ref (progress);
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return GIMP_PROGRESS (sub);
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}
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/**
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* gimp_sub_progress_set_range:
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* @start: start value of range on the parent process
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* @end: end value of range on the parent process
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*
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* Sets a range on the parent progress that this @progress should be
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* mapped to.
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*/
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void
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gimp_sub_progress_set_range (GimpSubProgress *progress,
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gdouble start,
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gdouble end)
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{
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g_return_if_fail (GIMP_IS_SUB_PROGRESS (progress));
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g_return_if_fail (start < end);
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progress->start = start;
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progress->end = end;
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}
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/**
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* gimp_sub_progress_set_step:
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* @index: step index
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* @num_steps: number of steps
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*
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* A more convenient form of gimp_sub_progress_set_range().
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*/
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void
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gimp_sub_progress_set_step (GimpSubProgress *progress,
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gint index,
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gint num_steps)
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{
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g_return_if_fail (GIMP_IS_SUB_PROGRESS (progress));
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g_return_if_fail (index < num_steps && num_steps > 0);
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progress->start = (gdouble) index / num_steps;
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progress->end = (gdouble) (index + 1) / num_steps;
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}
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