mirror of https://github.com/GNOME/gimp.git
230 lines
6.9 KiB
C
230 lines
6.9 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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* GimpText
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* Copyright (C) 2003 Sven Neumann <sven@gimp.org>
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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 <cairo.h>
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#include "libgimpbase/gimpbase.h"
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#include "text-types.h"
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#include "core/gimp.h"
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#include "core/gimpdrawable-private.h" /* eek */
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#include "core/gimpimage.h"
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#include "core/gimpparasitelist.h"
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#include "gimptext.h"
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#include "gimptext-parasite.h"
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#include "gimptextlayer.h"
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#include "gimptextlayer-xcf.h"
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#include "gimp-intl.h"
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enum
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{
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TEXT_LAYER_XCF_NONE = 0,
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TEXT_LAYER_XCF_DONT_AUTO_RENAME = 1 << 0,
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TEXT_LAYER_XCF_MODIFIED = 1 << 1
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};
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static GimpLayer * gimp_text_layer_from_layer (GimpLayer *layer,
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GimpText *text);
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gboolean
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gimp_text_layer_xcf_load_hack (GimpLayer **layer)
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{
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const gchar *name;
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GimpText *text = NULL;
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const GimpParasite *parasite;
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gboolean before_xcf_v19 = FALSE;
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g_return_val_if_fail (layer != NULL, FALSE);
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g_return_val_if_fail (GIMP_IS_LAYER (*layer), FALSE);
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name = gimp_text_parasite_name ();
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parasite = gimp_item_parasite_find (GIMP_ITEM (*layer), name);
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if (parasite)
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{
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GError *error = NULL;
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text = gimp_text_from_parasite (parasite,
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gimp_item_get_image (GIMP_ITEM (*layer))->gimp,
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&before_xcf_v19,
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&error);
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if (error)
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{
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gimp_message (gimp_item_get_image (GIMP_ITEM (*layer))->gimp, NULL,
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GIMP_MESSAGE_ERROR,
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_("Problems parsing the text parasite for layer '%s':\n"
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"%s\n\n"
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"Some text properties may be wrong. "
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"Unless you want to edit the text layer, "
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"you don't need to worry about this."),
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gimp_object_get_name (*layer),
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error->message);
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g_clear_error (&error);
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}
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}
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else
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{
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name = gimp_text_gdyntext_parasite_name ();
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parasite = gimp_item_parasite_find (GIMP_ITEM (*layer), name);
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if (parasite)
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{
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text = gimp_text_from_gdyntext_parasite (gimp_item_get_image (GIMP_ITEM (*layer))->gimp,
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parasite);
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before_xcf_v19 = TRUE;
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}
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}
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if (text)
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{
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*layer = gimp_text_layer_from_layer (*layer, text);
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/* let the text layer knows what parasite was used to create it */
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GIMP_TEXT_LAYER (*layer)->text_parasite = name;
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GIMP_TEXT_LAYER (*layer)->text_parasite_is_old = before_xcf_v19;
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}
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return (text != NULL);
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}
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void
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gimp_text_layer_xcf_save_prepare (GimpTextLayer *layer)
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{
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GimpText *text;
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g_return_if_fail (GIMP_IS_TEXT_LAYER (layer));
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/* If the layer has a text parasite already, it wasn't changed and we
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* can simply save the original parasite back which is still attached.
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*/
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if (layer->text_parasite)
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return;
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text = gimp_text_layer_get_text (layer);
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if (text)
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{
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GimpParasite *parasite = gimp_text_to_parasite (text);
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/* Don't push an undo because the parasite only exists temporarily
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* while the text layer is saved to XCF.
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*/
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gimp_item_parasite_attach (GIMP_ITEM (layer), parasite, FALSE);
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gimp_parasite_free (parasite);
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}
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}
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guint32
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gimp_text_layer_get_xcf_flags (GimpTextLayer *text_layer)
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{
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guint flags = 0;
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g_return_val_if_fail (GIMP_IS_TEXT_LAYER (text_layer), 0);
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if (! text_layer->auto_rename)
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flags |= TEXT_LAYER_XCF_DONT_AUTO_RENAME;
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if (text_layer->modified)
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flags |= TEXT_LAYER_XCF_MODIFIED;
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return flags;
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}
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void
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gimp_text_layer_set_xcf_flags (GimpTextLayer *text_layer,
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guint32 flags)
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{
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g_return_if_fail (GIMP_IS_TEXT_LAYER (text_layer));
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g_object_set (text_layer,
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"auto-rename", (flags & TEXT_LAYER_XCF_DONT_AUTO_RENAME) == 0,
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"modified", (flags & TEXT_LAYER_XCF_MODIFIED) != 0,
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NULL);
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}
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/**
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* gimp_text_layer_from_layer:
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* @layer: a #GimpLayer object
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* @text: a #GimpText object
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*
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* Converts a standard #GimpLayer and a #GimpText object into a
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* #GimpTextLayer. The new text layer takes ownership of the @text and
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* @layer objects. The @layer object is rendered unusable by this
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* function. Don't even try to use if afterwards!
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*
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* This is a gross hack that is needed in order to load text layers
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* from XCF files in a backwards-compatible way. Please don't use it
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* for anything else!
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*
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* Returns: a newly allocated #GimpTextLayer object
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**/
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static GimpLayer *
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gimp_text_layer_from_layer (GimpLayer *layer,
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GimpText *text)
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{
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GimpTextLayer *text_layer;
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GimpDrawable *drawable;
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g_return_val_if_fail (GIMP_IS_LAYER (layer), NULL);
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g_return_val_if_fail (GIMP_IS_TEXT (text), NULL);
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text_layer = g_object_new (GIMP_TYPE_TEXT_LAYER,
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"image", gimp_item_get_image (GIMP_ITEM (layer)),
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NULL);
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gimp_item_replace_item (GIMP_ITEM (text_layer), GIMP_ITEM (layer));
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drawable = GIMP_DRAWABLE (text_layer);
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gimp_drawable_steal_buffer (drawable, GIMP_DRAWABLE (layer));
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gimp_layer_set_opacity (GIMP_LAYER (text_layer),
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gimp_layer_get_opacity (layer), FALSE);
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gimp_layer_set_mode (GIMP_LAYER (text_layer),
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gimp_layer_get_mode (layer), FALSE);
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gimp_layer_set_blend_space (GIMP_LAYER (text_layer),
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gimp_layer_get_blend_space (layer), FALSE);
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gimp_layer_set_composite_space (GIMP_LAYER (text_layer),
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gimp_layer_get_composite_space (layer), FALSE);
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gimp_layer_set_composite_mode (GIMP_LAYER (text_layer),
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gimp_layer_get_composite_mode (layer), FALSE);
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gimp_layer_set_lock_alpha (GIMP_LAYER (text_layer),
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gimp_layer_get_lock_alpha (layer), FALSE);
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gimp_text_layer_set_text (text_layer, text);
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g_object_unref (text);
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g_object_unref (layer);
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return GIMP_LAYER (text_layer);
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}
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