305 lines
9.3 KiB
C
305 lines
9.3 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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* pikabrushclipboard.c
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* Copyright (C) 2006 Michael Natterer <mitch@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 "libpikabase/pikabase.h"
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#include "core-types.h"
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#include "pika.h"
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#include "pikabuffer.h"
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#include "pikabrush-private.h"
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#include "pikabrushclipboard.h"
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#include "pikaimage.h"
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#include "pikapickable.h"
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#include "pikatempbuf.h"
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#include "pika-intl.h"
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#define BRUSH_MAX_SIZE 1024
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enum
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{
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PROP_0,
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PROP_PIKA,
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PROP_MASK_ONLY
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};
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/* local function prototypes */
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static void pika_brush_clipboard_constructed (GObject *object);
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static void pika_brush_clipboard_set_property (GObject *object,
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guint property_id,
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const GValue *value,
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GParamSpec *pspec);
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static void pika_brush_clipboard_get_property (GObject *object,
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guint property_id,
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GValue *value,
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GParamSpec *pspec);
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static PikaData * pika_brush_clipboard_duplicate (PikaData *data);
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static void pika_brush_clipboard_changed (Pika *pika,
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PikaBrush *brush);
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G_DEFINE_TYPE (PikaBrushClipboard, pika_brush_clipboard, PIKA_TYPE_BRUSH)
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#define parent_class pika_brush_clipboard_parent_class
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static void
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pika_brush_clipboard_class_init (PikaBrushClipboardClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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PikaDataClass *data_class = PIKA_DATA_CLASS (klass);
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object_class->constructed = pika_brush_clipboard_constructed;
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object_class->set_property = pika_brush_clipboard_set_property;
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object_class->get_property = pika_brush_clipboard_get_property;
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data_class->duplicate = pika_brush_clipboard_duplicate;
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g_object_class_install_property (object_class, PROP_PIKA,
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g_param_spec_object ("pika", NULL, NULL,
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PIKA_TYPE_PIKA,
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PIKA_PARAM_READWRITE |
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G_PARAM_CONSTRUCT_ONLY));
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g_object_class_install_property (object_class, PROP_MASK_ONLY,
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g_param_spec_boolean ("mask-only", NULL, NULL,
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FALSE,
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PIKA_PARAM_READWRITE |
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G_PARAM_CONSTRUCT_ONLY));
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}
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static void
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pika_brush_clipboard_init (PikaBrushClipboard *brush)
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{
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}
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static void
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pika_brush_clipboard_constructed (GObject *object)
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{
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PikaBrushClipboard *brush = PIKA_BRUSH_CLIPBOARD (object);
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G_OBJECT_CLASS (parent_class)->constructed (object);
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pika_assert (PIKA_IS_PIKA (brush->pika));
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g_signal_connect_object (brush->pika, "clipboard-changed",
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G_CALLBACK (pika_brush_clipboard_changed),
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brush, 0);
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pika_brush_clipboard_changed (brush->pika, PIKA_BRUSH (brush));
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}
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static void
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pika_brush_clipboard_set_property (GObject *object,
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guint property_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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PikaBrushClipboard *brush = PIKA_BRUSH_CLIPBOARD (object);
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switch (property_id)
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{
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case PROP_PIKA:
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brush->pika = g_value_get_object (value);
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break;
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case PROP_MASK_ONLY:
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brush->mask_only = g_value_get_boolean (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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static void
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pika_brush_clipboard_get_property (GObject *object,
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guint property_id,
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GValue *value,
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GParamSpec *pspec)
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{
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PikaBrushClipboard *brush = PIKA_BRUSH_CLIPBOARD (object);
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switch (property_id)
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{
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case PROP_PIKA:
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g_value_set_object (value, brush->pika);
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break;
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case PROP_MASK_ONLY:
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g_value_set_boolean (value, brush->mask_only);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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static PikaData *
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pika_brush_clipboard_duplicate (PikaData *data)
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{
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PikaData *new = g_object_new (PIKA_TYPE_BRUSH, NULL);
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pika_data_copy (new, data);
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return new;
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}
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PikaData *
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pika_brush_clipboard_new (Pika *pika,
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gboolean mask_only)
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{
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const gchar *name;
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g_return_val_if_fail (PIKA_IS_PIKA (pika), NULL);
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if (mask_only)
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name = _("Clipboard Mask");
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else
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name = _("Clipboard Image");
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return g_object_new (PIKA_TYPE_BRUSH_CLIPBOARD,
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"name", name,
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"pika", pika,
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"mask-only", mask_only,
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NULL);
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}
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/* private functions */
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static void
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pika_brush_clipboard_changed (Pika *pika,
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PikaBrush *brush)
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{
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PikaObject *paste;
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GeglBuffer *buffer = NULL;
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gint width;
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gint height;
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g_clear_pointer (&brush->priv->mask, pika_temp_buf_unref);
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g_clear_pointer (&brush->priv->pixmap, pika_temp_buf_unref);
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paste = pika_get_clipboard_object (pika);
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if (PIKA_IS_IMAGE (paste))
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{
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pika_pickable_flush (PIKA_PICKABLE (paste));
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buffer = pika_pickable_get_buffer (PIKA_PICKABLE (paste));
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}
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else if (PIKA_IS_BUFFER (paste))
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{
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buffer = pika_buffer_get_buffer (PIKA_BUFFER (paste));
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}
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if (buffer)
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{
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const Babl *format = gegl_buffer_get_format (buffer);
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width = MIN (gegl_buffer_get_width (buffer), BRUSH_MAX_SIZE);
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height = MIN (gegl_buffer_get_height (buffer), BRUSH_MAX_SIZE);
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brush->priv->mask = pika_temp_buf_new (width, height,
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babl_format ("Y u8"));
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if (PIKA_BRUSH_CLIPBOARD (brush)->mask_only)
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{
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guchar *p;
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gint i;
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gegl_buffer_get (buffer,
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GEGL_RECTANGLE (0, 0, width, height), 1.0,
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babl_format ("Y u8"),
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pika_temp_buf_get_data (brush->priv->mask),
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GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
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/* invert the mask, it's more intuitive to think
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* "black on white" than the other way around
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*/
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for (i = 0, p = pika_temp_buf_get_data (brush->priv->mask);
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i < width * height;
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i++, p++)
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{
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*p = 255 - *p;
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}
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}
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else
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{
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brush->priv->pixmap = pika_temp_buf_new (width, height,
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babl_format ("R'G'B' u8"));
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/* copy the alpha channel into the brush's mask */
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if (babl_format_has_alpha (format))
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{
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gegl_buffer_get (buffer,
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GEGL_RECTANGLE (0, 0, width, height), 1.0,
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babl_format ("A u8"),
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pika_temp_buf_get_data (brush->priv->mask),
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GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
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}
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else
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{
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memset (pika_temp_buf_get_data (brush->priv->mask), 255,
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width * height);
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}
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/* copy the color channels into the brush's pixmap */
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gegl_buffer_get (buffer,
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GEGL_RECTANGLE (0, 0, width, height), 1.0,
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babl_format ("R'G'B' u8"),
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pika_temp_buf_get_data (brush->priv->pixmap),
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GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
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}
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}
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else
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{
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width = 17;
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height = 17;
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brush->priv->mask = pika_temp_buf_new (width, height,
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babl_format ("Y u8"));
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pika_temp_buf_data_clear (brush->priv->mask);
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}
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brush->priv->x_axis.x = width / 2;
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brush->priv->x_axis.y = 0;
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brush->priv->y_axis.x = 0;
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brush->priv->y_axis.y = height / 2;
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pika_data_dirty (PIKA_DATA (brush));
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}
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