311 lines
11 KiB
C
311 lines
11 KiB
C
/* PIKA - Photo and Image Kooker Application
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* a rebranding of The GNU Image Manipulation Program (created with heckimp)
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* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
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*
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* Original copyright, applying to most contents (license remains unchanged):
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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 <https://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 "gegl/pika-babl.h"
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#include "pikaerror.h"
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#include "pikaimage.h"
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#include "pikalayer.h"
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#include "pikalayermask.h"
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#include "pika-intl.h"
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static void pika_layer_mask_preview_freeze (PikaViewable *viewable);
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static void pika_layer_mask_preview_thaw (PikaViewable *viewable);
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static gboolean pika_layer_mask_is_attached (PikaItem *item);
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static gboolean pika_layer_mask_is_content_locked (PikaItem *item,
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PikaItem **locked_item);
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static gboolean pika_layer_mask_is_position_locked (PikaItem *item,
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PikaItem **locked_item,
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gboolean check_children);
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static PikaItemTree * pika_layer_mask_get_tree (PikaItem *item);
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static PikaItem * pika_layer_mask_duplicate (PikaItem *item,
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GType new_type);
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static gboolean pika_layer_mask_rename (PikaItem *item,
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const gchar *new_name,
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const gchar *undo_desc,
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GError **error);
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static void pika_layer_mask_bounding_box_changed (PikaDrawable *drawable);
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static void pika_layer_mask_convert_type (PikaDrawable *drawable,
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PikaImage *dest_image,
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const Babl *new_format,
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PikaColorProfile *src_profile,
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PikaColorProfile *dest_profile,
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GeglDitherMethod layer_dither_type,
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GeglDitherMethod mask_dither_type,
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gboolean push_undo,
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PikaProgress *progress);
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G_DEFINE_TYPE (PikaLayerMask, pika_layer_mask, PIKA_TYPE_CHANNEL)
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#define parent_class pika_layer_mask_parent_class
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static void
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pika_layer_mask_class_init (PikaLayerMaskClass *klass)
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{
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PikaViewableClass *viewable_class = PIKA_VIEWABLE_CLASS (klass);
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PikaItemClass *item_class = PIKA_ITEM_CLASS (klass);
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PikaDrawableClass *drawable_class = PIKA_DRAWABLE_CLASS (klass);
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viewable_class->default_icon_name = "pika-layer-mask";
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viewable_class->preview_freeze = pika_layer_mask_preview_freeze;
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viewable_class->preview_thaw = pika_layer_mask_preview_thaw;
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item_class->is_attached = pika_layer_mask_is_attached;
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item_class->is_content_locked = pika_layer_mask_is_content_locked;
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item_class->is_position_locked = pika_layer_mask_is_position_locked;
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item_class->get_tree = pika_layer_mask_get_tree;
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item_class->duplicate = pika_layer_mask_duplicate;
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item_class->rename = pika_layer_mask_rename;
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item_class->translate_desc = C_("undo-type", "Move Layer Mask");
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item_class->to_selection_desc = C_("undo-type", "Layer Mask to Selection");
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drawable_class->bounding_box_changed = pika_layer_mask_bounding_box_changed;
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drawable_class->convert_type = pika_layer_mask_convert_type;
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}
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static void
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pika_layer_mask_init (PikaLayerMask *layer_mask)
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{
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layer_mask->layer = NULL;
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}
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static void
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pika_layer_mask_preview_freeze (PikaViewable *viewable)
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{
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PikaLayerMask *mask = PIKA_LAYER_MASK (viewable);
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PikaLayer *layer = pika_layer_mask_get_layer (mask);
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if (layer)
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{
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PikaViewable *parent = pika_viewable_get_parent (PIKA_VIEWABLE (layer));
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if (! parent && pika_item_is_attached (PIKA_ITEM (layer)))
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parent = PIKA_VIEWABLE (pika_item_get_image (PIKA_ITEM (layer)));
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if (parent)
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pika_viewable_preview_freeze (parent);
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}
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}
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static void
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pika_layer_mask_preview_thaw (PikaViewable *viewable)
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{
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PikaLayerMask *mask = PIKA_LAYER_MASK (viewable);
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PikaLayer *layer = pika_layer_mask_get_layer (mask);
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if (layer)
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{
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PikaViewable *parent = pika_viewable_get_parent (PIKA_VIEWABLE (layer));
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if (! parent && pika_item_is_attached (PIKA_ITEM (layer)))
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parent = PIKA_VIEWABLE (pika_item_get_image (PIKA_ITEM (layer)));
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if (parent)
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pika_viewable_preview_thaw (parent);
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}
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}
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static gboolean
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pika_layer_mask_is_content_locked (PikaItem *item,
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PikaItem **locked_item)
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{
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PikaLayerMask *mask = PIKA_LAYER_MASK (item);
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PikaLayer *layer = pika_layer_mask_get_layer (mask);
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if (layer)
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return pika_item_is_content_locked (PIKA_ITEM (layer), locked_item);
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return FALSE;
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}
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static gboolean
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pika_layer_mask_is_position_locked (PikaItem *item,
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PikaItem **locked_item,
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gboolean check_children)
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{
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PikaLayerMask *mask = PIKA_LAYER_MASK (item);
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PikaLayer *layer = pika_layer_mask_get_layer (mask);
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if (layer)
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return pika_item_is_position_locked (PIKA_ITEM (layer), locked_item);
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return FALSE;
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}
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static gboolean
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pika_layer_mask_is_attached (PikaItem *item)
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{
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PikaLayerMask *mask = PIKA_LAYER_MASK (item);
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PikaLayer *layer = pika_layer_mask_get_layer (mask);
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return (PIKA_IS_IMAGE (pika_item_get_image (item)) &&
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PIKA_IS_LAYER (layer) &&
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pika_layer_get_mask (layer) == mask &&
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pika_item_is_attached (PIKA_ITEM (layer)));
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}
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static PikaItemTree *
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pika_layer_mask_get_tree (PikaItem *item)
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{
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return NULL;
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}
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static PikaItem *
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pika_layer_mask_duplicate (PikaItem *item,
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GType new_type)
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{
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PikaItem *new_item;
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g_return_val_if_fail (g_type_is_a (new_type, PIKA_TYPE_DRAWABLE), NULL);
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new_item = PIKA_ITEM_CLASS (parent_class)->duplicate (item, new_type);
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return new_item;
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}
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static gboolean
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pika_layer_mask_rename (PikaItem *item,
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const gchar *new_name,
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const gchar *undo_desc,
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GError **error)
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{
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/* reject renaming, layer masks are always named "<layer name> mask" */
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g_set_error (error, PIKA_ERROR, PIKA_FAILED,
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_("Cannot rename layer masks."));
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return FALSE;
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}
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static void
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pika_layer_mask_bounding_box_changed (PikaDrawable *drawable)
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{
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PikaLayerMask *mask = PIKA_LAYER_MASK (drawable);
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PikaLayer *layer = pika_layer_mask_get_layer (mask);
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if (PIKA_DRAWABLE_CLASS (parent_class)->bounding_box_changed)
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PIKA_DRAWABLE_CLASS (parent_class)->bounding_box_changed (drawable);
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if (layer)
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pika_drawable_update_bounding_box (PIKA_DRAWABLE (layer));
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}
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static void
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pika_layer_mask_convert_type (PikaDrawable *drawable,
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PikaImage *dest_image,
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const Babl *new_format,
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PikaColorProfile *src_profile,
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PikaColorProfile *dest_profile,
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GeglDitherMethod layer_dither_type,
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GeglDitherMethod mask_dither_type,
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gboolean push_undo,
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PikaProgress *progress)
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{
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new_format =
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pika_babl_mask_format (pika_babl_format_get_precision (new_format));
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PIKA_DRAWABLE_CLASS (parent_class)->convert_type (drawable, dest_image,
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new_format,
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src_profile,
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dest_profile,
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layer_dither_type,
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mask_dither_type,
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push_undo,
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progress);
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}
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PikaLayerMask *
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pika_layer_mask_new (PikaImage *image,
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gint width,
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gint height,
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const gchar *name,
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const PikaRGB *color)
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{
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PikaLayerMask *layer_mask;
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g_return_val_if_fail (PIKA_IS_IMAGE (image), NULL);
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g_return_val_if_fail (width > 0, NULL);
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g_return_val_if_fail (height > 0, NULL);
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g_return_val_if_fail (color != NULL, NULL);
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layer_mask =
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PIKA_LAYER_MASK (pika_drawable_new (PIKA_TYPE_LAYER_MASK,
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image, name,
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0, 0, width, height,
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pika_image_get_mask_format (image)));
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/* set the layer_mask color and opacity */
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pika_channel_set_color (PIKA_CHANNEL (layer_mask), color, FALSE);
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pika_channel_set_show_masked (PIKA_CHANNEL (layer_mask), TRUE);
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/* selection mask variables */
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PIKA_CHANNEL (layer_mask)->x2 = width;
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PIKA_CHANNEL (layer_mask)->y2 = height;
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return layer_mask;
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}
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void
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pika_layer_mask_set_layer (PikaLayerMask *layer_mask,
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PikaLayer *layer)
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{
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g_return_if_fail (PIKA_IS_LAYER_MASK (layer_mask));
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g_return_if_fail (layer == NULL || PIKA_IS_LAYER (layer));
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layer_mask->layer = layer;
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if (layer)
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{
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gchar *mask_name;
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gint offset_x;
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gint offset_y;
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pika_item_get_offset (PIKA_ITEM (layer), &offset_x, &offset_y);
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pika_item_set_offset (PIKA_ITEM (layer_mask), offset_x, offset_y);
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mask_name = g_strdup_printf (_("%s mask"), pika_object_get_name (layer));
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pika_object_take_name (PIKA_OBJECT (layer_mask), mask_name);
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}
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}
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PikaLayer *
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pika_layer_mask_get_layer (PikaLayerMask *layer_mask)
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{
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g_return_val_if_fail (PIKA_IS_LAYER_MASK (layer_mask), NULL);
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return layer_mask->layer;
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}
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