139a23451d
Use GimpObjectQueue, added in the previous commit, in various
instances where we perform an action on a set of objects. This
improves progress reporting, by using a single progress for the
entire operation, rather than reporting the progress of each object
individually, and by taking the relative cost of each object into
account, instead of assuming a uniform cost for all objects.
In particular, this affects the various whole-image operations
(i.e., transformations and color conversions), operations on linked
items, and operations on layer groups. This also affects layers
with masks, whose progress is now reported together instead of
individually.
Additionally, this commit fixes erroneous group-layer mask cropping
during undo when resizing the image, by properly calling
{start,end}_move() on all the resized layers before starting the
operation, and when scaling the image, by only scaling top-level
layers, and letting group layers scale their children themselves.
261 lines
8.4 KiB
C
261 lines
8.4 KiB
C
/* GIMP - The GNU 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 3 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, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <gdk-pixbuf/gdk-pixbuf.h>
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#include <gegl.h>
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#include "core-types.h"
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#include "gimp.h"
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#include "gimpcontainer.h"
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#include "gimpguide.h"
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#include "gimpgrouplayer.h"
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#include "gimpimage.h"
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#include "gimpimage-guides.h"
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#include "gimpimage-sample-points.h"
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#include "gimpimage-scale.h"
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#include "gimpimage-undo.h"
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#include "gimpimage-undo-push.h"
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#include "gimplayer.h"
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#include "gimpobjectqueue.h"
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#include "gimpprogress.h"
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#include "gimpprojection.h"
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#include "gimpsamplepoint.h"
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#include "gimp-log.h"
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#include "gimp-intl.h"
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void
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gimp_image_scale (GimpImage *image,
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gint new_width,
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gint new_height,
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GimpInterpolationType interpolation_type,
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GimpProgress *progress)
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{
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GimpObjectQueue *queue;
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GimpItem *item;
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GList *list;
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gint old_width;
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gint old_height;
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gint offset_x;
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gint offset_y;
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gdouble img_scale_w = 1.0;
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gdouble img_scale_h = 1.0;
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g_return_if_fail (GIMP_IS_IMAGE (image));
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g_return_if_fail (new_width > 0 && new_height > 0);
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g_return_if_fail (progress == NULL || GIMP_IS_PROGRESS (progress));
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gimp_set_busy (image->gimp);
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queue = gimp_object_queue_new (progress);
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progress = GIMP_PROGRESS (queue);
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gimp_object_queue_push_container (queue, gimp_image_get_layers (image));
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gimp_object_queue_push (queue, gimp_image_get_mask (image));
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gimp_object_queue_push_container (queue, gimp_image_get_channels (image));
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gimp_object_queue_push_container (queue, gimp_image_get_vectors (image));
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g_object_freeze_notify (G_OBJECT (image));
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gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_IMAGE_SCALE,
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C_("undo-type", "Scale Image"));
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old_width = gimp_image_get_width (image);
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old_height = gimp_image_get_height (image);
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img_scale_w = (gdouble) new_width / (gdouble) old_width;
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img_scale_h = (gdouble) new_height / (gdouble) old_height;
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offset_x = (old_width - new_width) / 2;
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offset_y = (old_height - new_height) / 2;
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/* Push the image size to the stack */
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gimp_image_undo_push_image_size (image,
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NULL,
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offset_x,
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offset_y,
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new_width,
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new_height);
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/* Set the new width and height early, so below image item setters
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* (esp. guides and sample points) don't choke about moving stuff
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* out of the image
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*/
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g_object_set (image,
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"width", new_width,
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"height", new_height,
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NULL);
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/* Scale all layers, channels (including selection mask), and vectors */
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while ((item = gimp_object_queue_pop (queue)))
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{
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if (! gimp_item_scale_by_factors (item,
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img_scale_w, img_scale_h,
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interpolation_type, progress))
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{
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/* Since 0 < img_scale_w, img_scale_h, failure due to one or more
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* vanishing scaled layer dimensions. Implicit delete implemented
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* here. Upstream warning implemented in resize_check_layer_scaling(),
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* which offers the user the chance to bail out.
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*/
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g_return_if_fail (GIMP_IS_LAYER (item));
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gimp_image_remove_layer (image, GIMP_LAYER (item), TRUE, NULL);
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}
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}
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/* Scale all Guides */
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for (list = gimp_image_get_guides (image);
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list;
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list = g_list_next (list))
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{
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GimpGuide *guide = list->data;
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gint position = gimp_guide_get_position (guide);
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switch (gimp_guide_get_orientation (guide))
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{
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case GIMP_ORIENTATION_HORIZONTAL:
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gimp_image_move_guide (image, guide,
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(position * new_height) / old_height,
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TRUE);
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break;
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case GIMP_ORIENTATION_VERTICAL:
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gimp_image_move_guide (image, guide,
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(position * new_width) / old_width,
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TRUE);
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break;
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default:
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break;
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}
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}
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/* Scale all sample points */
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for (list = gimp_image_get_sample_points (image);
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list;
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list = g_list_next (list))
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{
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GimpSamplePoint *sample_point = list->data;
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gint x;
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gint y;
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gimp_sample_point_get_position (sample_point, &x, &y);
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gimp_image_move_sample_point (image, sample_point,
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x * new_width / old_width,
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y * new_height / old_height,
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TRUE);
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}
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gimp_image_undo_group_end (image);
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g_object_unref (queue);
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gimp_image_size_changed_detailed (image,
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-offset_x,
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-offset_y,
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old_width,
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old_height);
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g_object_thaw_notify (G_OBJECT (image));
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gimp_unset_busy (image->gimp);
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}
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/**
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* gimp_image_scale_check:
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* @image: A #GimpImage.
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* @new_width: The new width.
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* @new_height: The new height.
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* @max_memsize: The maximum new memory size.
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* @new_memsize: The new memory size.
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*
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* Inventory the layer list in image and check that it may be
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* scaled to @new_height and @new_width without problems.
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*
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* Return value: #GIMP_IMAGE_SCALE_OK if scaling the image will shrink none
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* of its layers completely away, and the new image size
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* is smaller than @max_memsize.
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* #GIMP_IMAGE_SCALE_TOO_SMALL if scaling would remove some
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* existing layers.
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* #GIMP_IMAGE_SCALE_TOO_BIG if the new image size would
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* exceed the maximum specified in the preferences.
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**/
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GimpImageScaleCheckType
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gimp_image_scale_check (GimpImage *image,
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gint new_width,
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gint new_height,
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gint64 max_memsize,
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gint64 *new_memsize)
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{
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GList *all_layers;
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GList *list;
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gint64 current_size;
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gint64 undo_size;
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gint64 redo_size;
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gint64 new_size;
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g_return_val_if_fail (GIMP_IS_IMAGE (image), GIMP_IMAGE_SCALE_TOO_SMALL);
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g_return_val_if_fail (new_memsize != NULL, GIMP_IMAGE_SCALE_TOO_SMALL);
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current_size = gimp_object_get_memsize (GIMP_OBJECT (image), NULL);
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new_size = gimp_image_estimate_memsize (image,
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gimp_image_get_component_type (image),
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new_width, new_height);
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undo_size = gimp_object_get_memsize (GIMP_OBJECT (gimp_image_get_undo_stack (image)), NULL);
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redo_size = gimp_object_get_memsize (GIMP_OBJECT (gimp_image_get_redo_stack (image)), NULL);
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current_size -= undo_size + redo_size;
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new_size -= undo_size + redo_size;
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GIMP_LOG (IMAGE_SCALE,
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"old_size = %"G_GINT64_FORMAT" new_size = %"G_GINT64_FORMAT,
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current_size, new_size);
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*new_memsize = new_size;
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if (new_size > current_size && new_size > max_memsize)
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return GIMP_IMAGE_SCALE_TOO_BIG;
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all_layers = gimp_image_get_layer_list (image);
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for (list = all_layers; list; list = g_list_next (list))
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{
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GimpItem *item = list->data;
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/* group layers are updated automatically */
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if (gimp_viewable_get_children (GIMP_VIEWABLE (item)))
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continue;
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if (! gimp_item_check_scaling (item, new_width, new_height))
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{
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g_list_free (all_layers);
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return GIMP_IMAGE_SCALE_TOO_SMALL;
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}
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}
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g_list_free (all_layers);
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return GIMP_IMAGE_SCALE_OK;
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}
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