/* 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 2 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, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include "config.h" #include #include "core-types.h" #include "gimp.h" #include "gimpcontext.h" #include "gimpguide.h" #include "gimpimage.h" #include "gimpimage-rotate.h" #include "gimpimage-guides.h" #include "gimpimage-sample-points.h" #include "gimpimage-undo.h" #include "gimpimage-undo-push.h" #include "gimpitem.h" #include "gimplist.h" #include "gimpprogress.h" #include "gimpsamplepoint.h" static void gimp_image_rotate_item_offset (GimpImage *image, GimpRotationType rotate_type, GimpItem *item, gint off_x, gint off_y); static void gimp_image_rotate_guides (GimpImage *image, GimpRotationType rotate_type); static void gimp_image_rotate_sample_points (GimpImage *image, GimpRotationType rotate_type); void gimp_image_rotate (GimpImage *image, GimpContext *context, GimpRotationType rotate_type, GimpProgress *progress) { GList *list; gdouble center_x; gdouble center_y; gdouble progress_max; gdouble progress_current = 1.0; gint new_image_width; gint new_image_height; gboolean size_changed; g_return_if_fail (GIMP_IS_IMAGE (image)); g_return_if_fail (GIMP_IS_CONTEXT (context)); g_return_if_fail (progress == NULL || GIMP_IS_PROGRESS (progress)); gimp_set_busy (image->gimp); center_x = (gdouble) gimp_image_get_width (image) / 2.0; center_y = (gdouble) gimp_image_get_height (image) / 2.0; progress_max = (image->channels->num_children + image->layers->num_children + image->vectors->num_children + 1 /* selection */); g_object_freeze_notify (G_OBJECT (image)); gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_IMAGE_ROTATE, NULL); /* Resize the image (if needed) */ switch (rotate_type) { case GIMP_ROTATE_90: case GIMP_ROTATE_270: new_image_width = gimp_image_get_height (image); new_image_height = gimp_image_get_width (image); size_changed = TRUE; break; case GIMP_ROTATE_180: new_image_width = gimp_image_get_width (image); new_image_height = gimp_image_get_height (image); size_changed = FALSE; break; default: g_assert_not_reached (); return; } /* Rotate all channels */ for (list = GIMP_LIST (image->channels)->list; list; list = g_list_next (list)) { GimpItem *item = list->data; gimp_item_rotate (item, context, rotate_type, center_x, center_y, FALSE); item->offset_x = 0; item->offset_y = 0; if (progress) gimp_progress_set_value (progress, progress_current++ / progress_max); } /* Rotate all vectors */ for (list = GIMP_LIST (image->vectors)->list; list; list = g_list_next (list)) { GimpItem *item = list->data; gimp_item_rotate (item, context, rotate_type, center_x, center_y, FALSE); item->width = new_image_width; item->height = new_image_height; item->offset_x = 0; item->offset_y = 0; gimp_item_translate (item, (new_image_width - gimp_image_get_width (image)) / 2, (new_image_height - gimp_image_get_height (image)) / 2, FALSE); if (progress) gimp_progress_set_value (progress, progress_current++ / progress_max); } /* Don't forget the selection mask! */ { GimpChannel *mask = gimp_image_get_mask (image); gimp_item_rotate (GIMP_ITEM (mask), context, rotate_type, center_x, center_y, FALSE); GIMP_ITEM (mask)->offset_x = 0; GIMP_ITEM (mask)->offset_y = 0; if (progress) gimp_progress_set_value (progress, progress_current++ / progress_max); } /* Rotate all layers */ for (list = GIMP_LIST (image->layers)->list; list; list = g_list_next (list)) { GimpItem *item = list->data; gint off_x; gint off_y; gimp_item_offsets (item, &off_x, &off_y); gimp_item_rotate (item, context, rotate_type, center_x, center_y, FALSE); gimp_image_rotate_item_offset (image, rotate_type, item, off_x, off_y); if (progress) gimp_progress_set_value (progress, progress_current++ / progress_max); } /* Rotate all Guides */ gimp_image_rotate_guides (image, rotate_type); /* Rotate all sample points */ gimp_image_rotate_sample_points (image, rotate_type); /* Resize the image (if needed) */ if (size_changed) { gdouble xres; gdouble yres; gimp_image_undo_push_image_size (image, NULL); g_object_set (image, "width", new_image_width, "height", new_image_height, NULL); gimp_image_get_resolution (image, &xres, &yres); if (xres != yres) gimp_image_set_resolution (image, yres, xres); } gimp_image_undo_group_end (image); if (size_changed) gimp_viewable_size_changed (GIMP_VIEWABLE (image)); g_object_thaw_notify (G_OBJECT (image)); gimp_unset_busy (image->gimp); } static void gimp_image_rotate_item_offset (GimpImage *image, GimpRotationType rotate_type, GimpItem *item, gint off_x, gint off_y) { gint x = 0; gint y = 0; switch (rotate_type) { case GIMP_ROTATE_90: x = gimp_image_get_height (image) - off_y - gimp_item_width (item); y = off_x; break; case GIMP_ROTATE_270: x = off_y; y = gimp_image_get_width (image) - off_x - gimp_item_height (item); break; case GIMP_ROTATE_180: return; } gimp_item_offsets (item, &off_x, &off_y); x -= off_x; y -= off_y; if (x || y) gimp_item_translate (item, x, y, FALSE); } static void gimp_image_rotate_guides (GimpImage *image, GimpRotationType rotate_type) { GList *list; /* Rotate all Guides */ for (list = gimp_image_get_guides (image); list; list = g_list_next (list)) { GimpGuide *guide = list->data; GimpOrientationType orientation = gimp_guide_get_orientation (guide); gint position = gimp_guide_get_position (guide); switch (rotate_type) { case GIMP_ROTATE_90: switch (orientation) { case GIMP_ORIENTATION_HORIZONTAL: gimp_image_undo_push_guide (image, NULL, guide); gimp_guide_set_orientation (guide, GIMP_ORIENTATION_VERTICAL); gimp_guide_set_position (guide, gimp_image_get_height (image) - position); break; case GIMP_ORIENTATION_VERTICAL: gimp_image_undo_push_guide (image, NULL, guide); gimp_guide_set_orientation (guide, GIMP_ORIENTATION_HORIZONTAL); break; default: break; } break; case GIMP_ROTATE_180: switch (orientation) { case GIMP_ORIENTATION_HORIZONTAL: gimp_image_move_guide (image, guide, gimp_image_get_height (image) - position, TRUE); break; case GIMP_ORIENTATION_VERTICAL: gimp_image_move_guide (image, guide, gimp_image_get_width (image) - position, TRUE); break; default: break; } break; case GIMP_ROTATE_270: switch (orientation) { case GIMP_ORIENTATION_HORIZONTAL: gimp_image_undo_push_guide (image, NULL, guide); gimp_guide_set_orientation (guide, GIMP_ORIENTATION_VERTICAL); break; case GIMP_ORIENTATION_VERTICAL: gimp_image_undo_push_guide (image, NULL, guide); gimp_guide_set_orientation (guide, GIMP_ORIENTATION_HORIZONTAL); gimp_guide_set_position (guide, gimp_image_get_width (image) - position); break; default: break; } break; } } } static void gimp_image_rotate_sample_points (GimpImage *image, GimpRotationType rotate_type) { GList *list; /* Rotate all sample points */ for (list = gimp_image_get_sample_points (image); list; list = g_list_next (list)) { GimpSamplePoint *sample_point = list->data; gint old_x; gint old_y; gimp_image_undo_push_sample_point (image, NULL, sample_point); old_x = sample_point->x; old_y = sample_point->y; switch (rotate_type) { case GIMP_ROTATE_90: sample_point->x = old_y; sample_point->y = gimp_image_get_height (image) - old_x; break; case GIMP_ROTATE_180: sample_point->x = gimp_image_get_height (image) - old_x; sample_point->y = gimp_image_get_width (image) - old_y; break; case GIMP_ROTATE_270: sample_point->x = gimp_image_get_width (image) - old_y; sample_point->y = old_x; break; } } }