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Viewing changes to app/paint/gimppaintcore-undo.c

  • Committer: Bazaar Package Importer
  • Author(s): Daniel Holbach
  • Date: 2007-05-02 16:33:03 UTC
  • mfrom: (1.1.4 upstream)
  • Revision ID: james.westby@ubuntu.com-20070502163303-bvzhjzbpw8qglc4y
Tags: 2.3.16-1ubuntu1
* Resynchronized with Debian, remaining Ubuntu changes:
  - debian/rules: i18n magic.
* debian/control.in:
  - Maintainer: Ubuntu Core Developers <ubuntu-devel@lists.ubuntu.com>
* debian/patches/02_help-message.patch,
  debian/patches/03_gimp.desktop.in.in.patch,
  debian/patches/10_dont_show_wizard.patch: updated.
* debian/patches/04_composite-signedness.patch,
  debian/patches/05_add-letter-spacing.patch: dropped, used upstream.

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app/paint/gimppaintcore-undo.c
1
 
/* The GIMP -- an 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 "paint-types.h"
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#include "core/gimpimage-undo.h"
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#include "core/gimpimage.h"
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#include "core/gimpundo.h"
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#include "gimppaintcore.h"
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#include "gimp-intl.h"
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/****************/
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/*  Paint Undo  */
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/****************/
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typedef struct _PaintUndo PaintUndo;
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struct _PaintUndo
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{
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  GimpPaintCore *core;
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  GimpCoords     last_coords;
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};
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static gboolean undo_pop_paint  (GimpUndo            *undo,
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                                 GimpUndoMode         undo_mode,
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                                 GimpUndoAccumulator *accum);
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static void     undo_free_paint (GimpUndo            *undo,
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                                 GimpUndoMode         undo_mode);
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gboolean
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gimp_paint_core_real_push_undo (GimpPaintCore *core,
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                                GimpImage     *gimage,
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                                const gchar   *undo_desc)
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{
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  GimpUndo *new;
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  g_return_val_if_fail (GIMP_IS_PAINT_CORE (core), FALSE);
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  g_return_val_if_fail (GIMP_IS_IMAGE (gimage), FALSE);
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  if ((new = gimp_image_undo_push (gimage, GIMP_TYPE_UNDO,
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                                   sizeof (PaintUndo),
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                                   sizeof (PaintUndo),
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                                   GIMP_UNDO_PAINT, undo_desc,
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                                   FALSE,
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                                   undo_pop_paint,
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                                   undo_free_paint,
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                                   NULL)))
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    {
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      PaintUndo *pu = new->data;
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      pu->core        = core;
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      pu->last_coords = core->start_coords;
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      g_object_add_weak_pointer (G_OBJECT (core), (gpointer) &pu->core);
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      return TRUE;
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    }
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  return FALSE;
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}
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static gboolean
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undo_pop_paint (GimpUndo            *undo,
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                GimpUndoMode         undo_mode,
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                GimpUndoAccumulator *accum)
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{
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  PaintUndo *pu = undo->data;
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  /*  only pop if the core still exists  */
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  if (pu->core)
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    {
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      GimpCoords tmp_coords;
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      tmp_coords            = pu->core->last_coords;
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      pu->core->last_coords = pu->last_coords;
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      pu->last_coords       = tmp_coords;
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    }
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  return TRUE;
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}
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static void
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undo_free_paint (GimpUndo     *undo,
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                 GimpUndoMode  undo_mode)
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{
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  PaintUndo *pu = undo->data;
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  if (pu->core)
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    g_object_remove_weak_pointer (G_OBJECT (pu->core), (gpointer) &pu->core);
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  g_free (pu);
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}