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-rw-r--r--app/core/gimpbrushclipboard.c298
1 files changed, 298 insertions, 0 deletions
diff --git a/app/core/gimpbrushclipboard.c b/app/core/gimpbrushclipboard.c
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+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimpbrushclipboard.c
+ * Copyright (C) 2006 Michael Natterer <mitch@gimp.org>
+ *
+ * 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 3 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, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <gdk-pixbuf/gdk-pixbuf.h>
+#include <gegl.h>
+
+#include "core-types.h"
+
+#include "gimp.h"
+#include "gimpbuffer.h"
+#include "gimpbrush-private.h"
+#include "gimpbrushclipboard.h"
+#include "gimpimage.h"
+#include "gimppickable.h"
+#include "gimptempbuf.h"
+
+#include "gimp-intl.h"
+
+
+#define BRUSH_MAX_SIZE 1024
+
+enum
+{
+ PROP_0,
+ PROP_GIMP,
+ PROP_MASK_ONLY
+};
+
+
+/* local function prototypes */
+
+static void gimp_brush_clipboard_constructed (GObject *object);
+static void gimp_brush_clipboard_set_property (GObject *object,
+ guint property_id,
+ const GValue *value,
+ GParamSpec *pspec);
+static void gimp_brush_clipboard_get_property (GObject *object,
+ guint property_id,
+ GValue *value,
+ GParamSpec *pspec);
+
+static GimpData * gimp_brush_clipboard_duplicate (GimpData *data);
+
+static void gimp_brush_clipboard_changed (Gimp *gimp,
+ GimpBrush *brush);
+
+
+G_DEFINE_TYPE (GimpBrushClipboard, gimp_brush_clipboard, GIMP_TYPE_BRUSH)
+
+#define parent_class gimp_brush_clipboard_parent_class
+
+
+static void
+gimp_brush_clipboard_class_init (GimpBrushClipboardClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+ GimpDataClass *data_class = GIMP_DATA_CLASS (klass);
+
+ object_class->constructed = gimp_brush_clipboard_constructed;
+ object_class->set_property = gimp_brush_clipboard_set_property;
+ object_class->get_property = gimp_brush_clipboard_get_property;
+
+ data_class->duplicate = gimp_brush_clipboard_duplicate;
+
+ g_object_class_install_property (object_class, PROP_GIMP,
+ g_param_spec_object ("gimp", NULL, NULL,
+ GIMP_TYPE_GIMP,
+ GIMP_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT_ONLY));
+
+ g_object_class_install_property (object_class, PROP_MASK_ONLY,
+ g_param_spec_boolean ("mask-only", NULL, NULL,
+ FALSE,
+ GIMP_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT_ONLY));
+}
+
+static void
+gimp_brush_clipboard_init (GimpBrushClipboard *brush)
+{
+}
+
+static void
+gimp_brush_clipboard_constructed (GObject *object)
+{
+ GimpBrushClipboard *brush = GIMP_BRUSH_CLIPBOARD (object);
+
+ G_OBJECT_CLASS (parent_class)->constructed (object);
+
+ gimp_assert (GIMP_IS_GIMP (brush->gimp));
+
+ g_signal_connect_object (brush->gimp, "clipboard-changed",
+ G_CALLBACK (gimp_brush_clipboard_changed),
+ brush, 0);
+
+ gimp_brush_clipboard_changed (brush->gimp, GIMP_BRUSH (brush));
+}
+
+static void
+gimp_brush_clipboard_set_property (GObject *object,
+ guint property_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ GimpBrushClipboard *brush = GIMP_BRUSH_CLIPBOARD (object);
+
+ switch (property_id)
+ {
+ case PROP_GIMP:
+ brush->gimp = g_value_get_object (value);
+ break;
+
+ case PROP_MASK_ONLY:
+ brush->mask_only = g_value_get_boolean (value);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ break;
+ }
+}
+
+static void
+gimp_brush_clipboard_get_property (GObject *object,
+ guint property_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ GimpBrushClipboard *brush = GIMP_BRUSH_CLIPBOARD (object);
+
+ switch (property_id)
+ {
+ case PROP_GIMP:
+ g_value_set_object (value, brush->gimp);
+ break;
+
+ case PROP_MASK_ONLY:
+ g_value_set_boolean (value, brush->mask_only);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ break;
+ }
+}
+
+static GimpData *
+gimp_brush_clipboard_duplicate (GimpData *data)
+{
+ GimpData *new = g_object_new (GIMP_TYPE_BRUSH, NULL);
+
+ gimp_data_copy (new, data);
+
+ return new;
+}
+
+GimpData *
+gimp_brush_clipboard_new (Gimp *gimp,
+ gboolean mask_only)
+{
+ const gchar *name;
+
+ g_return_val_if_fail (GIMP_IS_GIMP (gimp), NULL);
+
+ if (mask_only)
+ name = _("Clipboard Mask");
+ else
+ name = _("Clipboard Image");
+
+ return g_object_new (GIMP_TYPE_BRUSH_CLIPBOARD,
+ "name", name,
+ "gimp", gimp,
+ "mask-only", mask_only,
+ NULL);
+}
+
+
+/* private functions */
+
+static void
+gimp_brush_clipboard_changed (Gimp *gimp,
+ GimpBrush *brush)
+{
+ GimpObject *paste;
+ GeglBuffer *buffer = NULL;
+ gint width;
+ gint height;
+
+ g_clear_pointer (&brush->priv->mask, gimp_temp_buf_unref);
+ g_clear_pointer (&brush->priv->pixmap, gimp_temp_buf_unref);
+
+ paste = gimp_get_clipboard_object (gimp);
+
+ if (GIMP_IS_IMAGE (paste))
+ {
+ gimp_pickable_flush (GIMP_PICKABLE (paste));
+ buffer = gimp_pickable_get_buffer (GIMP_PICKABLE (paste));
+ }
+ else if (GIMP_IS_BUFFER (paste))
+ {
+ buffer = gimp_buffer_get_buffer (GIMP_BUFFER (paste));
+ }
+
+ if (buffer)
+ {
+ const Babl *format = gegl_buffer_get_format (buffer);
+
+ width = MIN (gegl_buffer_get_width (buffer), BRUSH_MAX_SIZE);
+ height = MIN (gegl_buffer_get_height (buffer), BRUSH_MAX_SIZE);
+
+ brush->priv->mask = gimp_temp_buf_new (width, height,
+ babl_format ("Y u8"));
+
+ if (GIMP_BRUSH_CLIPBOARD (brush)->mask_only)
+ {
+ guchar *p;
+ gint i;
+
+ gegl_buffer_get (buffer,
+ GEGL_RECTANGLE (0, 0, width, height), 1.0,
+ babl_format ("Y u8"),
+ gimp_temp_buf_get_data (brush->priv->mask),
+ GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
+
+ /* invert the mask, it's more intuitive to think
+ * "black on white" than the other way around
+ */
+ for (i = 0, p = gimp_temp_buf_get_data (brush->priv->mask);
+ i < width * height;
+ i++, p++)
+ {
+ *p = 255 - *p;
+ }
+ }
+ else
+ {
+ brush->priv->pixmap = gimp_temp_buf_new (width, height,
+ babl_format ("R'G'B' u8"));
+
+ /* copy the alpha channel into the brush's mask */
+ if (babl_format_has_alpha (format))
+ {
+ gegl_buffer_get (buffer,
+ GEGL_RECTANGLE (0, 0, width, height), 1.0,
+ babl_format ("A u8"),
+ gimp_temp_buf_get_data (brush->priv->mask),
+ GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
+ }
+ else
+ {
+ memset (gimp_temp_buf_get_data (brush->priv->mask), 255,
+ width * height);
+ }
+
+ /* copy the color channels into the brush's pixmap */
+ gegl_buffer_get (buffer,
+ GEGL_RECTANGLE (0, 0, width, height), 1.0,
+ babl_format ("R'G'B' u8"),
+ gimp_temp_buf_get_data (brush->priv->pixmap),
+ GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
+ }
+ }
+ else
+ {
+ width = 17;
+ height = 17;
+
+ brush->priv->mask = gimp_temp_buf_new (width, height,
+ babl_format ("Y u8"));
+ gimp_temp_buf_data_clear (brush->priv->mask);
+ }
+
+ brush->priv->x_axis.x = width / 2;
+ brush->priv->x_axis.y = 0;
+ brush->priv->y_axis.x = 0;
+ brush->priv->y_axis.y = height / 2;
+
+ gimp_data_dirty (GIMP_DATA (brush));
+}
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