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- /* gap_layer_copy.c
- * by hof (Wolfgang Hofer)
- *
- */
- /* The GIMP -- an 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 2 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, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- */
-
- /* revision history:
- * version 0.99.00 1999.03.03 hof: use the regular gimp_layer_copy and gimp_channel_copy
- * (removed private variant)
- * version 0.98.00 1998.11.26 hof: added channel copy
- * version 1998.11.26 hof: bugfix have to copy the layer's layer_mask too.
- * type check of destination image
- * version 0.96.00 hof: bugfix memory leak (must set src_tile to unref after use)
- * version 0.93.01 hof: when creating the destination layer
- * add alpha channel if needed in extra call
- * version 0.90.00; hof: 1.st (pre) release
- */
-
- /* SYTEM (UNIX) includes */
- /* GIMP includes */
- /* GAP includes */
- #include "gap_layer_copy.h"
- #include "gap_pdb_calls.h"
-
- extern int gap_debug; /* ==0 ... dont print debug infos */
-
- /* ============================================================================
- * p_my_layer_copy
- * copy src_layer to the dst_image,
- * return the id of the new created layer (the copy)
- * NOTE: source layer MUST have same type (bpp) for now
- * it would be fine to extend the code to convert between any type
- * ============================================================================
- */
- gint32 p_my_layer_copy (gint32 dst_image_id,
- gint32 src_layer_id,
- gdouble opacity, /* 0.0 upto 100.0 */
- GimpLayerModeEffects mode,
- gint *src_offset_x,
- gint *src_offset_y )
- {
- gint32 l_new_layer_id;
- gint32 l_ret_id;
- char *l_name;
- GimpImageType l_src_type;
-
- if(gap_debug) printf("GAP p_my_layer_copy: START\n");
-
- l_ret_id = -1; /* prepare error retcode -1 */
- l_name = NULL;
-
- if(opacity > 99.99) opacity = 100.0;
- if(opacity < 0.0) opacity = 0.0;
-
- l_name = gimp_layer_get_name(src_layer_id);
- l_src_type = gimp_drawable_type(src_layer_id);
-
- switch(l_src_type)
- {
- case GIMP_RGB_IMAGE: /* 0 */
- case GIMP_RGBA_IMAGE: /* 1 */
- if(gimp_image_base_type(dst_image_id) != GIMP_RGB) { return -1; }
- break;
- case GIMP_GRAY_IMAGE: /* 2 */
- case GIMP_GRAYA_IMAGE: /* 3 */
- if(gimp_image_base_type(dst_image_id) != GIMP_GRAY) { return -1; }
- break;
- case GIMP_INDEXED_IMAGE: /* 4 */
- case GIMP_INDEXEDA_IMAGE: /* 5 */
- if(gimp_image_base_type(dst_image_id) != GIMP_INDEXED) { return -1; }
- break;
- }
-
-
- /* copy the layer */
- l_new_layer_id = gimp_layer_copy(src_layer_id);
-
- if(l_new_layer_id >= 0)
- {
- if(p_gimp_drawable_set_image(l_new_layer_id, dst_image_id) >= 0)
- {
- if(! gimp_drawable_has_alpha(l_new_layer_id))
- {
- /* have to add alpha channel */
- gimp_layer_add_alpha(l_new_layer_id);
- }
-
- /* findout the offsets of the original layer within the source Image */
- gimp_drawable_offsets(src_layer_id, src_offset_x, src_offset_y );
-
- gimp_layer_set_name(l_new_layer_id, l_name);
- gimp_layer_set_opacity(l_new_layer_id, opacity);
- gimp_layer_set_mode(l_new_layer_id, mode);
-
-
- l_ret_id = l_new_layer_id; /* all done OK */
- }
-
- }
-
- if(l_name != NULL) { g_free (l_name); }
-
- if(gap_debug) printf("GAP p_my_layer_copy: ret %d\n", (int)l_ret_id);
-
- return l_ret_id;
- } /* end p_my_layer_copy */
-
-
- /* ============================================================================
- * p_my_channel_copy
- * copy a channel to dst_IMAGE
- * ============================================================================
- */
- gint32 p_my_channel_copy (gint32 dst_image_id,
- gint32 src_channel_id)
- {
- gint32 l_new_channel_id;
- gint32 l_ret_id;
- char *l_name;
-
- if(gap_debug) printf("GAP :p_my_channel_copy START\n");
-
- l_ret_id = -1; /* prepare error retcode -1 */
- l_name = NULL;
-
- /* create new channel in destination image */
- l_name = gimp_channel_get_name(src_channel_id);
-
- /* copy the channel */
- l_new_channel_id = gimp_channel_copy(src_channel_id);
- if(l_new_channel_id >= 0)
- {
- if(p_gimp_drawable_set_image(l_new_channel_id, dst_image_id) >= 0)
- {
- gimp_channel_set_name(l_new_channel_id, l_name);
- l_ret_id = l_new_channel_id; /* all done OK */
- }
- }
-
- if(l_name != NULL) { g_free (l_name); }
-
- if(gap_debug) printf("GAP :p_my_channel_copy id=%d\n", (int)l_ret_id);
-
- return l_ret_id;
- } /* end p_my_channel_copy */
-