233 lines
7.1 KiB
C
233 lines
7.1 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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* PikaText
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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 "libpikabase/pikabase.h"
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#include "text-types.h"
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#include "core/pika.h"
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#include "core/pikadrawable-private.h" /* eek */
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#include "core/pikaimage.h"
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#include "core/pikaparasitelist.h"
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#include "pikatext.h"
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#include "pikatext-parasite.h"
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#include "pikatextlayer.h"
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#include "pikatextlayer-xcf.h"
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#include "pika-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 PikaLayer * pika_text_layer_from_layer (PikaLayer *layer,
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PikaText *text);
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gboolean
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pika_text_layer_xcf_load_hack (PikaLayer **layer)
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{
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const gchar *name;
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PikaText *text = NULL;
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const PikaParasite *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 (PIKA_IS_LAYER (*layer), FALSE);
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name = pika_text_parasite_name ();
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parasite = pika_item_parasite_find (PIKA_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 = pika_text_from_parasite (parasite,
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pika_item_get_image (PIKA_ITEM (*layer))->pika,
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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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pika_message (pika_item_get_image (PIKA_ITEM (*layer))->pika, NULL,
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PIKA_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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pika_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 = pika_text_gdyntext_parasite_name ();
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parasite = pika_item_parasite_find (PIKA_ITEM (*layer), name);
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if (parasite)
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{
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text = pika_text_from_gdyntext_parasite (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 = pika_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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PIKA_TEXT_LAYER (*layer)->text_parasite = name;
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PIKA_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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pika_text_layer_xcf_save_prepare (PikaTextLayer *layer)
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{
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PikaText *text;
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g_return_if_fail (PIKA_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 = pika_text_layer_get_text (layer);
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if (text)
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{
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PikaParasite *parasite = pika_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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pika_item_parasite_attach (PIKA_ITEM (layer), parasite, FALSE);
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pika_parasite_free (parasite);
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}
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}
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guint32
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pika_text_layer_get_xcf_flags (PikaTextLayer *text_layer)
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{
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guint flags = 0;
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g_return_val_if_fail (PIKA_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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pika_text_layer_set_xcf_flags (PikaTextLayer *text_layer,
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guint32 flags)
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{
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g_return_if_fail (PIKA_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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* pika_text_layer_from_layer:
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* @layer: a #PikaLayer object
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* @text: a #PikaText object
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*
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* Converts a standard #PikaLayer and a #PikaText object into a
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* #PikaTextLayer. 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 #PikaTextLayer object
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**/
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static PikaLayer *
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pika_text_layer_from_layer (PikaLayer *layer,
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PikaText *text)
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{
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PikaTextLayer *text_layer;
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PikaDrawable *drawable;
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g_return_val_if_fail (PIKA_IS_LAYER (layer), NULL);
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g_return_val_if_fail (PIKA_IS_TEXT (text), NULL);
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text_layer = g_object_new (PIKA_TYPE_TEXT_LAYER,
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"image", pika_item_get_image (PIKA_ITEM (layer)),
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NULL);
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pika_item_replace_item (PIKA_ITEM (text_layer), PIKA_ITEM (layer));
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drawable = PIKA_DRAWABLE (text_layer);
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pika_drawable_steal_buffer (drawable, PIKA_DRAWABLE (layer));
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pika_layer_set_opacity (PIKA_LAYER (text_layer),
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pika_layer_get_opacity (layer), FALSE);
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pika_layer_set_mode (PIKA_LAYER (text_layer),
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pika_layer_get_mode (layer), FALSE);
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pika_layer_set_blend_space (PIKA_LAYER (text_layer),
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pika_layer_get_blend_space (layer), FALSE);
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pika_layer_set_composite_space (PIKA_LAYER (text_layer),
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pika_layer_get_composite_space (layer), FALSE);
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pika_layer_set_composite_mode (PIKA_LAYER (text_layer),
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pika_layer_get_composite_mode (layer), FALSE);
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pika_layer_set_lock_alpha (PIKA_LAYER (text_layer),
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pika_layer_get_lock_alpha (layer), FALSE);
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pika_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 PIKA_LAYER (text_layer);
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}
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