mirror of https://github.com/GNOME/gimp.git
261 lines
7.1 KiB
C
261 lines
7.1 KiB
C
/* LIBGIMP - The GIMP Library
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* Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
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*
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* gimpdrawable.c
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*
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* This library is free software: you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 3 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <https://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#define GIMP_DISABLE_DEPRECATION_WARNINGS
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#include "gimp.h"
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#include "gimptilebackendplugin.h"
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guchar *
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gimp_drawable_get_thumbnail_data (gint32 drawable_ID,
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gint *width,
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gint *height,
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gint *bpp)
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{
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gint ret_width;
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gint ret_height;
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guchar *image_data;
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gint data_size;
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_gimp_drawable_thumbnail (drawable_ID,
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*width,
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*height,
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&ret_width,
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&ret_height,
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bpp,
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&data_size,
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&image_data);
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*width = ret_width;
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*height = ret_height;
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return image_data;
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}
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guchar *
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gimp_drawable_get_sub_thumbnail_data (gint32 drawable_ID,
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gint src_x,
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gint src_y,
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gint src_width,
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gint src_height,
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gint *dest_width,
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gint *dest_height,
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gint *bpp)
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{
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gint ret_width;
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gint ret_height;
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guchar *image_data;
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gint data_size;
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_gimp_drawable_sub_thumbnail (drawable_ID,
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src_x, src_y,
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src_width, src_height,
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*dest_width,
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*dest_height,
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&ret_width,
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&ret_height,
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bpp,
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&data_size,
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&image_data);
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*dest_width = ret_width;
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*dest_height = ret_height;
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return image_data;
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}
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/**
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* gimp_drawable_get_buffer:
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* @drawable_ID: the ID of the #GimpDrawable to get the buffer for.
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*
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* Returns a #GeglBuffer of a specified drawable. The buffer can be used
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* like any other GEGL buffer. Its data will we synced back with the core
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* drawable when the buffer gets destroyed, or when gegl_buffer_flush()
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* is called.
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*
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* Returns: (transfer full): The #GeglBuffer.
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*
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* See Also: gimp_drawable_get_shadow_buffer()
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*
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* Since: 2.10
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*/
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GeglBuffer *
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gimp_drawable_get_buffer (gint32 drawable_ID)
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{
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if (gimp_item_is_valid (drawable_ID))
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{
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GeglTileBackend *backend;
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GeglBuffer *buffer;
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backend = _gimp_tile_backend_plugin_new (drawable_ID, FALSE);
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buffer = gegl_buffer_new_for_backend (NULL, backend);
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g_object_unref (backend);
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return buffer;
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}
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return NULL;
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}
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/**
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* gimp_drawable_get_shadow_buffer:
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* @drawable_ID: the ID of the #GimpDrawable to get the buffer for.
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*
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* Returns a #GeglBuffer of a specified drawable's shadow tiles. The
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* buffer can be used like any other GEGL buffer. Its data will we
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* synced back with the core drawable's shadow tiles when the buffer
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* gets destroyed, or when gegl_buffer_flush() is called.
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*
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* Returns: (transfer full): The #GeglBuffer.
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*
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* See Also: gimp_drawable_get_shadow_buffer()
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*
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* Since: 2.10
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*/
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GeglBuffer *
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gimp_drawable_get_shadow_buffer (gint32 drawable_ID)
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{
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if (gimp_item_is_valid (drawable_ID))
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{
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GeglTileBackend *backend;
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GeglBuffer *buffer;
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backend = _gimp_tile_backend_plugin_new (drawable_ID, TRUE);
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buffer = gegl_buffer_new_for_backend (NULL, backend);
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g_object_unref (backend);
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return buffer;
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}
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return NULL;
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}
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/**
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* gimp_drawable_get_format:
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* @drawable_ID: the ID of the #GimpDrawable to get the format for.
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*
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* Returns the #Babl format of the drawable.
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*
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* Returns: The #Babl format.
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*
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* Since: 2.10
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*/
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const Babl *
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gimp_drawable_get_format (gint32 drawable_ID)
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{
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const Babl *format = NULL;
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gchar *format_str = _gimp_drawable_get_format (drawable_ID);
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/* _gimp_drawable_get_format() only returns the encoding, so we
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* create the actual space from the image's profile
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*/
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if (format_str)
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{
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gint32 image_ID = gimp_item_get_image (drawable_ID);
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const Babl *space = NULL;
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if (gimp_item_is_layer (drawable_ID))
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{
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GimpColorProfile *profile = gimp_image_get_color_profile (image_ID);
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if (profile)
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{
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GError *error = NULL;
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space = gimp_color_profile_get_space
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(profile,
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GIMP_COLOR_RENDERING_INTENT_RELATIVE_COLORIMETRIC,
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&error);
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if (! space)
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{
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g_printerr ("%s: failed to create Babl space from "
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"profile: %s\n",
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G_STRFUNC, error->message);
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g_clear_error (&error);
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}
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g_object_unref (profile);
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}
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}
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if (gimp_drawable_is_indexed (drawable_ID))
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{
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const Babl *palette;
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const Babl *palette_alpha;
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guchar *colormap;
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gint n_colors;
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babl_new_palette_with_space (format_str, space,
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&palette, &palette_alpha);
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if (gimp_drawable_has_alpha (drawable_ID))
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format = palette_alpha;
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else
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format = palette;
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colormap = gimp_image_get_colormap (image_ID, &n_colors);
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if (colormap)
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{
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babl_palette_set_palette (format,
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babl_format_with_space ("R'G'B' u8",
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space),
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colormap, n_colors);
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g_free (colormap);
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}
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}
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else
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{
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format = babl_format_with_space (format_str, space);
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}
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g_free (format_str);
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}
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return format;
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}
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/**
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* gimp_drawable_get_thumbnail_format:
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* @drawable_ID: the ID of the #GimpDrawable to get the thumbnail format for.
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*
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* Returns the #Babl thumbnail format of the drawable.
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*
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* Returns: The #Babl thumbnail format.
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*
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* Since: 2.10.14
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*/
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const Babl *
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gimp_drawable_get_thumbnail_format (gint32 drawable_ID)
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{
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const Babl *format = NULL;
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gchar *format_str = _gimp_drawable_get_thumbnail_format (drawable_ID);
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if (format_str)
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format = babl_format (format_str);
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return format;
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}
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