mirror of https://github.com/GNOME/gimp.git
156 lines
4.4 KiB
C
156 lines
4.4 KiB
C
/* 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 <gtk/gtk.h>
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#include "tools-types.h"
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#include "base/tile-manager.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 "gimptoolcontrol.h"
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#include "gimptransformtool.h"
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#include "gimptransformtool-undo.h"
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#include "tool_manager.h"
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#include "gimp-intl.h"
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/********************/
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/* Transform Undo */
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/********************/
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typedef struct _TransformUndo TransformUndo;
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struct _TransformUndo
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{
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gint tool_ID;
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GType tool_type;
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TransInfo trans_info;
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TileManager *original;
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};
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static gboolean undo_pop_transform (GimpUndo *undo,
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GimpUndoMode undo_mode,
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GimpUndoAccumulator *accum);
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static void undo_free_transform (GimpUndo *undo,
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GimpUndoMode undo_mode);
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gboolean
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gimp_transform_tool_push_undo (GimpImage *image,
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const gchar *undo_desc,
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gint tool_ID,
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GType tool_type,
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gdouble *trans_info,
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TileManager *original)
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{
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GimpUndo *new;
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if ((new = gimp_image_undo_push (image, GIMP_TYPE_UNDO,
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sizeof (TransformUndo),
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sizeof (TransformUndo),
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GIMP_UNDO_TRANSFORM, undo_desc,
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FALSE,
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undo_pop_transform,
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undo_free_transform,
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NULL)))
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{
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TransformUndo *tu = new->data;
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gint i;
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tu->tool_ID = tool_ID;
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tu->tool_type = tool_type;
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for (i = 0; i < TRAN_INFO_SIZE; i++)
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tu->trans_info[i] = trans_info[i];
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if (original)
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tu->original = tile_manager_ref (original);
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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_transform (GimpUndo *undo,
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GimpUndoMode undo_mode,
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GimpUndoAccumulator *accum)
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{
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GimpTool *active_tool;
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active_tool = tool_manager_get_active (undo->image->gimp);
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if (GIMP_IS_TRANSFORM_TOOL (active_tool))
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{
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GimpTransformTool *tt = GIMP_TRANSFORM_TOOL (active_tool);
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TransformUndo *tu = undo->data;
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/* only pop if the active tool is the tool that pushed this undo */
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if (tu->tool_ID == active_tool->ID)
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{
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TileManager *temp;
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gdouble d;
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gint i;
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/* swap the transformation information arrays */
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for (i = 0; i < TRAN_INFO_SIZE; i++)
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{
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d = tu->trans_info[i];
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tu->trans_info[i] = tt->trans_info[i];
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tt->trans_info[i] = d;
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}
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/* swap the original buffer--the source buffer for repeated transforms
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*/
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temp = tu->original;
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tu->original = tt->original;
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tt->original = temp;
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/* If we're re-implementing the first transform, reactivate tool */
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if (undo_mode == GIMP_UNDO_MODE_REDO && tt->original)
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{
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gimp_tool_control_activate (active_tool->control);
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gimp_draw_tool_resume (GIMP_DRAW_TOOL (tt));
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}
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}
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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_transform (GimpUndo *undo,
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GimpUndoMode undo_mode)
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{
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TransformUndo * tu = undo->data;
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if (tu->original)
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tile_manager_unref (tu->original);
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g_free (tu);
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}
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