mirror of
https://gitlab.gnome.org/GNOME/gimp
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142 lines
3.8 KiB
C
142 lines
3.8 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 <glib-object.h>
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#include "core-types.h"
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#include "libgimptool/gimptooltypes.h"
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#include "gimp.h"
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#include "gimpchannel.h"
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#include "gimpimage.h"
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#include "gimpimage-guides.h"
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#include "gimpimage-mask.h"
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#include "gimpimage-projection.h"
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#include "gimpimage-resize.h"
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#include "gimplayer.h"
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#include "gimplayer-floating-sel.h"
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#include "gimplist.h"
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#include "undo.h"
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void
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gimp_image_resize (GimpImage *gimage,
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gint new_width,
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gint new_height,
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gint offset_x,
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gint offset_y)
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{
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GimpChannel *channel;
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GimpLayer *layer;
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GimpLayer *floating_layer;
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GList *list;
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GList *guide_list;
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g_return_if_fail (GIMP_IS_IMAGE (gimage));
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g_return_if_fail (new_width > 0 && new_height > 0);
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gimp_set_busy (gimage->gimp);
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/* Get the floating layer if one exists */
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floating_layer = gimp_image_floating_sel (gimage);
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undo_push_group_start (gimage, IMAGE_RESIZE_UNDO_GROUP);
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/* Relax the floating selection */
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if (floating_layer)
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floating_sel_relax (floating_layer, TRUE);
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/* Push the image size to the stack */
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undo_push_image_size (gimage);
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/* Set the new width and height */
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gimage->width = new_width;
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gimage->height = new_height;
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/* Resize all channels */
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for (list = GIMP_LIST (gimage->channels)->list;
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list;
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list = g_list_next (list))
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{
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channel = (GimpChannel *) list->data;
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gimp_channel_resize (channel, new_width, new_height, offset_x, offset_y);
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}
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/* Reposition or remove any guides */
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guide_list = gimage->guides;
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while (guide_list)
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{
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GimpGuide *guide;
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guide = (GimpGuide *) guide_list->data;
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guide_list = g_list_next (guide_list);
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switch (guide->orientation)
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{
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case ORIENTATION_HORIZONTAL:
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undo_push_image_guide (gimage, guide);
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guide->position += offset_y;
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if (guide->position < 0 || guide->position > new_height)
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gimp_image_delete_guide (gimage, guide);
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break;
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case ORIENTATION_VERTICAL:
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undo_push_image_guide (gimage, guide);
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guide->position += offset_x;
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if (guide->position < 0 || guide->position > new_width)
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gimp_image_delete_guide (gimage, guide);
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break;
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default:
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g_error ("Unknown guide orientation\n");
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}
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}
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/* Don't forget the selection mask! */
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gimp_channel_resize (gimage->selection_mask,
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new_width, new_height, offset_x, offset_y);
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gimp_image_mask_invalidate (gimage);
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/* Reposition all layers */
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for (list = GIMP_LIST (gimage->layers)->list;
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list;
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list = g_list_next (list))
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{
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layer = (GimpLayer *) list->data;
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gimp_layer_translate (layer, offset_x, offset_y);
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}
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/* Make sure the projection matches the gimage size */
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gimp_image_projection_allocate (gimage);
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/* Rigor the floating selection */
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if (floating_layer)
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floating_sel_rigor (floating_layer, TRUE);
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undo_push_group_end (gimage);
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gimp_viewable_size_changed (GIMP_VIEWABLE (gimage));
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gimp_unset_busy (gimage->gimp);
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}
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