callisto-debian/gimp
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
Files
ae6828c1cc3aa38a1cb5d1954c736f62d6a8d24d
gimp/app/core/gimpimage-rotate.c
Michael Natterer 87d463aed0 Iterate over all an image's items recursively 
Use gimp_image_get_layer,channel,vectors_list() instead of
gimp_image_get_layer,channel,vectors_iter(). As a side-effect,
simplified some code that was making sure we don't modify the list
returned by the old functions (the new functions return newly
allocated lists so we can safely remove items from the image while
iterating it). Some places will need adjusting once we really have
item trees.
2009-08-02 17:44:05 +02:00

389 lines
12 KiB
C
Raw Blame History

/* 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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <gegl.h>
#include "core-types.h"
#include "gimp.h"
#include "gimpcontainer.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 "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 *all_layers;
GList *all_channels;
GList *all_vectors;
GList *list;
gdouble center_x;
gdouble center_y;
gdouble progress_max;
gdouble progress_current = 1.0;
gint new_image_width;
gint new_image_height;
gint previous_image_width;
gint previous_image_height;
gint offset_x;
gint offset_y;
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);
previous_image_width = gimp_image_get_width (image);
previous_image_height = gimp_image_get_height (image);
center_x = previous_image_width / 2.0;
center_y = previous_image_height / 2.0;
all_layers = gimp_image_get_layer_list (image);
all_channels = gimp_image_get_channel_list (image);
all_vectors = gimp_image_get_vectors_list (image);
progress_max = (g_list_length (all_layers) +
g_list_length (all_channels) +
g_list_length (all_vectors) +
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;
offset_x = (gimp_image_get_width (image) - new_image_width) / 2;
offset_y = (gimp_image_get_height (image) - new_image_height) / 2;
break;
case GIMP_ROTATE_180:
new_image_width = gimp_image_get_width (image);
new_image_height = gimp_image_get_height (image);
size_changed = FALSE;
offset_x = 0;
offset_y = 0;
break;
default:
g_assert_not_reached ();
return;
}
/* Rotate all channels */
for (list = all_channels; list; list = g_list_next (list))
{
GimpItem *item = list->data;
gimp_item_rotate (item, context, rotate_type, center_x, center_y, FALSE);
gimp_item_set_offset (item, 0, 0);
if (progress)
gimp_progress_set_value (progress, progress_current++ / progress_max);
}
/* Rotate all vectors */
for (list = all_vectors; 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;
g_object_notify (G_OBJECT (item), "width");
g_object_notify (G_OBJECT (item), "height");
gimp_item_set_offset (item, 0, 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_set_offset (GIMP_ITEM (mask), 0, 0);
if (progress)
gimp_progress_set_value (progress, progress_current++ / progress_max);
}
/* Rotate all layers */
for (list = all_layers; list; list = g_list_next (list))
{
GimpItem *item = list->data;
gint off_x;
gint off_y;
gimp_item_get_offset (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,
offset_x,
offset_y,
new_image_width,
new_image_height);
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_image_size_changed_detailed (image,
-offset_x,
-offset_y,
previous_image_width,
previous_image_height);
g_object_thaw_notify (G_OBJECT (image));
g_list_free (all_layers);
g_list_free (all_channels);
g_list_free (all_vectors);
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_get_width (item);
y = off_x;
break;
case GIMP_ROTATE_270:
x = off_y;
y = gimp_image_get_width (image) - off_x - gimp_item_get_height (item);
break;
case GIMP_ROTATE_180:
return;
}
gimp_item_get_offset (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;
}
}
}
Reference in New Issue View Git Blame Copy Permalink