/* The GIMP -- an 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 "gimpimage.h" #include "gimpimage-projection.h" #include "gimpimage-rotate.h" #include "gimpimage-guides.h" #include "gimpimage-undo.h" #include "gimpimage-undo-push.h" #include "gimpitem.h" #include "gimplayer-floating-sel.h" #include "gimplist.h" static void gimp_image_rotate_item_offset (GimpImage *gimage, GimpRotationType rotate_type, GimpItem *item, gint off_x, gint off_y); static void gimp_image_rotate_guides (GimpImage *gimage, GimpRotationType rotate_type); void gimp_image_rotate (GimpImage *gimage, GimpRotationType rotate_type, GimpProgressFunc progress_func, gpointer progress_data) { GimpLayer *floating_layer; GimpItem *item; GList *list; gdouble center_x; gdouble center_y; gint progress_max; gint progress_current = 1; gint new_image_width; gint new_image_height; gboolean size_changed; g_return_if_fail (GIMP_IS_IMAGE (gimage)); gimp_set_busy (gimage->gimp); center_x = (gdouble) gimage->width / 2.0; center_y = (gdouble) gimage->height / 2.0; progress_max = (gimage->channels->num_children + gimage->layers->num_children + gimage->vectors->num_children + 1 /* selection */); /* Get the floating layer if one exists */ floating_layer = gimp_image_floating_sel (gimage); gimp_image_undo_group_start (gimage, GIMP_UNDO_GROUP_IMAGE_ROTATE, NULL); /* Relax the floating selection */ if (floating_layer) floating_sel_relax (floating_layer, TRUE); /* Resize the image (if needed) */ switch (rotate_type) { case GIMP_ROTATE_90: case GIMP_ROTATE_270: new_image_width = gimage->height; new_image_height = gimage->width; size_changed = TRUE; break; case GIMP_ROTATE_180: new_image_width = gimage->width; new_image_height = gimage->height; size_changed = FALSE; break; default: g_assert_not_reached (); return; } /* Rotate all channels */ for (list = GIMP_LIST (gimage->channels)->list; list; list = g_list_next (list)) { item = (GimpItem *) list->data; gimp_item_rotate (item, rotate_type, center_x, center_y, FALSE); item->offset_x = 0; item->offset_y = 0; if (progress_func) (* progress_func) (0, progress_max, progress_current++, progress_data); } /* Rotate all vectors */ for (list = GIMP_LIST (gimage->vectors)->list; list; list = g_list_next (list)) { item = (GimpItem *) list->data; gimp_item_rotate (item, 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 - gimage->width) / 2, (new_image_height - gimage->height) / 2, FALSE); if (progress_func) (* progress_func) (0, progress_max, progress_current++, progress_data); } /* Don't forget the selection mask! */ gimp_item_rotate (GIMP_ITEM (gimp_image_get_mask (gimage)), rotate_type, center_x, center_y, FALSE); GIMP_ITEM (gimage->selection_mask)->offset_x = 0; GIMP_ITEM (gimage->selection_mask)->offset_y = 0; if (progress_func) (* progress_func) (0, progress_max, progress_current++, progress_data); /* Rotate all layers */ for (list = GIMP_LIST (gimage->layers)->list; list; list = g_list_next (list)) { gint off_x, off_y; item = (GimpItem *) list->data; gimp_item_offsets (item, &off_x, &off_y); gimp_item_rotate (item, rotate_type, center_x, center_y, FALSE); gimp_image_rotate_item_offset (gimage, rotate_type, item, off_x, off_y); if (progress_func) (* progress_func) (0, progress_max, progress_current++, progress_data); } /* Rotate all Guides */ gimp_image_rotate_guides (gimage, rotate_type); /* Resize the image (if needed) */ if (size_changed) { gimp_image_undo_push_image_size (gimage, NULL); gimage->width = new_image_width; gimage->height = new_image_height; if (gimage->xresolution != gimage->yresolution) { gdouble tmp; gimp_image_undo_push_image_resolution (gimage, NULL); tmp = gimage->xresolution; gimage->yresolution = gimage->xresolution; gimage->xresolution = tmp; } } /* Make sure the projection matches the gimage size */ gimp_image_projection_allocate (gimage); /* Rigor the floating selection */ if (floating_layer) floating_sel_rigor (floating_layer, TRUE); gimp_image_undo_group_end (gimage); if (size_changed) gimp_viewable_size_changed (GIMP_VIEWABLE (gimage)); gimp_unset_busy (gimage->gimp); } static void gimp_image_rotate_item_offset (GimpImage *gimage, 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 = gimage->height - off_y - gimp_item_width (item); y = off_x; break; case GIMP_ROTATE_270: x = off_y; y = gimage->width - 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 *gimage, GimpRotationType rotate_type) { GList *list; /* Rotate all Guides */ for (list = gimage->guides; list; list = g_list_next (list)) { GimpGuide *guide = list->data; switch (rotate_type) { case GIMP_ROTATE_90: switch (guide->orientation) { case GIMP_ORIENTATION_HORIZONTAL: gimp_image_undo_push_image_guide (gimage, NULL, guide); guide->orientation = GIMP_ORIENTATION_VERTICAL; guide->position = gimage->height - guide->position; break; case GIMP_ORIENTATION_VERTICAL: gimp_image_undo_push_image_guide (gimage, NULL, guide); guide->orientation = GIMP_ORIENTATION_HORIZONTAL; break; default: break; } break; case GIMP_ROTATE_180: switch (guide->orientation) { case GIMP_ORIENTATION_HORIZONTAL: gimp_image_move_guide (gimage, guide, gimage->height - guide->position, TRUE); break; case GIMP_ORIENTATION_VERTICAL: gimp_image_move_guide (gimage, guide, gimage->width - guide->position, TRUE); break; default: break; } break; case GIMP_ROTATE_270: switch (guide->orientation) { case GIMP_ORIENTATION_HORIZONTAL: gimp_image_undo_push_image_guide (gimage, NULL, guide); guide->orientation = GIMP_ORIENTATION_VERTICAL; break; case GIMP_ORIENTATION_VERTICAL: gimp_image_undo_push_image_guide (gimage, NULL, guide); guide->orientation = GIMP_ORIENTATION_HORIZONTAL; guide->position = gimage->width - guide->position; break; default: break; } break; } } }