mirror of https://github.com/GNOME/gimp.git
275 lines
9.5 KiB
C
275 lines
9.5 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 <stdlib.h>
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#include <string.h>
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#include <gdk-pixbuf/gdk-pixbuf.h>
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#include <gegl.h>
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#include "libgimpmath/gimpmath.h"
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#include "core-types.h"
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#include "gegl/gimp-babl.h"
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#include "gimperror.h"
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#include "gimpimage.h"
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#include "gimpimage-undo-push.h"
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#include "gimplayer.h"
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#include "gimplayermask.h"
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#include "gimp-intl.h"
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static gboolean gimp_layer_mask_is_attached (GimpItem *item);
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static gboolean gimp_layer_mask_is_content_locked (GimpItem *item);
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static gboolean gimp_layer_mask_is_position_locked (GimpItem *item);
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static GimpItemTree * gimp_layer_mask_get_tree (GimpItem *item);
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static GimpItem * gimp_layer_mask_duplicate (GimpItem *item,
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GType new_type);
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static gboolean gimp_layer_mask_rename (GimpItem *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 gimp_layer_mask_convert_type (GimpDrawable *drawable,
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GimpImage *dest_image,
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const Babl *new_format,
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GimpImageBaseType new_base_type,
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GimpPrecision new_precision,
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GimpColorProfile *dest_profile,
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gint layer_dither_type,
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gint mask_dither_type,
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gboolean push_undo,
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GimpProgress *progress);
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G_DEFINE_TYPE (GimpLayerMask, gimp_layer_mask, GIMP_TYPE_CHANNEL)
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#define parent_class gimp_layer_mask_parent_class
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static void
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gimp_layer_mask_class_init (GimpLayerMaskClass *klass)
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{
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GimpViewableClass *viewable_class = GIMP_VIEWABLE_CLASS (klass);
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GimpItemClass *item_class = GIMP_ITEM_CLASS (klass);
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GimpDrawableClass *drawable_class = GIMP_DRAWABLE_CLASS (klass);
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viewable_class->default_icon_name = "gimp-layer-mask";
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item_class->is_attached = gimp_layer_mask_is_attached;
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item_class->is_content_locked = gimp_layer_mask_is_content_locked;
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item_class->is_position_locked = gimp_layer_mask_is_position_locked;
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item_class->get_tree = gimp_layer_mask_get_tree;
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item_class->duplicate = gimp_layer_mask_duplicate;
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item_class->rename = gimp_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->convert_type = gimp_layer_mask_convert_type;
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}
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static void
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gimp_layer_mask_init (GimpLayerMask *layer_mask)
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{
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layer_mask->layer = NULL;
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}
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static gboolean
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gimp_layer_mask_is_content_locked (GimpItem *item)
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{
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GimpLayerMask *mask = GIMP_LAYER_MASK (item);
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GimpLayer *layer = gimp_layer_mask_get_layer (mask);
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if (layer)
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return gimp_item_is_content_locked (GIMP_ITEM (layer));
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return FALSE;
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}
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static gboolean
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gimp_layer_mask_is_position_locked (GimpItem *item)
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{
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GimpLayerMask *mask = GIMP_LAYER_MASK (item);
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GimpLayer *layer = gimp_layer_mask_get_layer (mask);
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if (layer)
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return gimp_item_is_position_locked (GIMP_ITEM (layer));
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return FALSE;
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}
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static gboolean
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gimp_layer_mask_is_attached (GimpItem *item)
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{
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GimpLayerMask *mask = GIMP_LAYER_MASK (item);
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GimpLayer *layer = gimp_layer_mask_get_layer (mask);
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return (GIMP_IS_IMAGE (gimp_item_get_image (item)) &&
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GIMP_IS_LAYER (layer) &&
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gimp_layer_get_mask (layer) == mask &&
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gimp_item_is_attached (GIMP_ITEM (layer)));
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}
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static GimpItemTree *
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gimp_layer_mask_get_tree (GimpItem *item)
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{
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return NULL;
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}
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static GimpItem *
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gimp_layer_mask_duplicate (GimpItem *item,
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GType new_type)
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{
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GimpItem *new_item;
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g_return_val_if_fail (g_type_is_a (new_type, GIMP_TYPE_DRAWABLE), NULL);
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new_item = GIMP_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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gimp_layer_mask_rename (GimpItem *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, GIMP_ERROR, GIMP_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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gimp_layer_mask_convert_type (GimpDrawable *drawable,
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GimpImage *dest_image,
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const Babl *new_format,
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GimpImageBaseType new_base_type,
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GimpPrecision new_precision,
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GimpColorProfile *dest_profile,
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gint layer_dither_type,
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gint mask_dither_type,
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gboolean push_undo,
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GimpProgress *progress)
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{
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new_format = gimp_babl_mask_format (new_precision);
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GIMP_DRAWABLE_CLASS (parent_class)->convert_type (drawable, dest_image,
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new_format,
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new_base_type,
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new_precision,
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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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GimpLayerMask *
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gimp_layer_mask_new (GimpImage *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 GimpRGB *color)
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{
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GimpLayerMask *layer_mask;
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g_return_val_if_fail (GIMP_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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GIMP_LAYER_MASK (gimp_drawable_new (GIMP_TYPE_LAYER_MASK,
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image, name,
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0, 0, width, height,
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gimp_image_get_mask_format (image)));
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/* set the layer_mask color and opacity */
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gimp_channel_set_color (GIMP_CHANNEL (layer_mask), color, FALSE);
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gimp_channel_set_show_masked (GIMP_CHANNEL (layer_mask), TRUE);
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/* selection mask variables */
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GIMP_CHANNEL (layer_mask)->x2 = width;
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GIMP_CHANNEL (layer_mask)->y2 = height;
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return layer_mask;
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}
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GimpLayerMask *
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gimp_layer_mask_new_from_buffer (GeglBuffer *buffer,
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GimpImage *image,
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const gchar *name,
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const GimpRGB *color)
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{
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GimpLayerMask *layer_mask;
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GeglBuffer *dest;
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g_return_val_if_fail (GEGL_IS_BUFFER (buffer), NULL);
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g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
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layer_mask = gimp_layer_mask_new (image,
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gegl_buffer_get_width (buffer),
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gegl_buffer_get_height (buffer),
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name, color);
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dest = gimp_drawable_get_buffer (GIMP_DRAWABLE (layer_mask));
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gegl_buffer_copy (buffer, NULL, GEGL_ABYSS_NONE, dest, NULL);
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return layer_mask;
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}
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void
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gimp_layer_mask_set_layer (GimpLayerMask *layer_mask,
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GimpLayer *layer)
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{
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g_return_if_fail (GIMP_IS_LAYER_MASK (layer_mask));
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g_return_if_fail (layer == NULL || GIMP_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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gimp_item_get_offset (GIMP_ITEM (layer), &offset_x, &offset_y);
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gimp_item_set_offset (GIMP_ITEM (layer_mask), offset_x, offset_y);
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mask_name = g_strdup_printf (_("%s mask"), gimp_object_get_name (layer));
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gimp_object_take_name (GIMP_OBJECT (layer_mask), mask_name);
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}
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}
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GimpLayer *
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gimp_layer_mask_get_layer (GimpLayerMask *layer_mask)
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{
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g_return_val_if_fail (GIMP_IS_LAYER_MASK (layer_mask), NULL);
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return layer_mask->layer;
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}
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