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gimp/app/core/gimpundo.c

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/* 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.
*/
#include "config.h"
#include <time.h>
#include <glib-object.h>
#include "core-types.h"
#include "base/temp-buf.h"
#include "config/gimpcoreconfig.h"
#include "gimp.h"
#include "gimpimage.h"
#include "gimpmarshal.h"
#include "gimpundo.h"
#include "gimpundostack.h"
#include "gimp-intl.h"
enum
{
POP,
FREE,
LAST_SIGNAL
};
enum
{
PROP_0,
PROP_IMAGE,
PROP_UNDO_TYPE,
PROP_DIRTIES_IMAGE,
PROP_DATA,
PROP_SIZE,
PROP_POP_FUNC,
PROP_FREE_FUNC
};
static void gimp_undo_class_init (GimpUndoClass *klass);
static GObject * gimp_undo_constructor (GType type,
guint n_params,
GObjectConstructParam *params);
static void gimp_undo_finalize (GObject *object);
static void gimp_undo_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void gimp_undo_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
static gint64 gimp_undo_get_memsize (GimpObject *object,
gint64 *gui_size);
static gboolean gimp_undo_get_popup_size (GimpViewable *viewable,
gint width,
gint height,
gboolean dot_for_dot,
gint *popup_width,
gint *popup_height);
static TempBuf * gimp_undo_get_new_preview (GimpViewable *viewable,
gint width,
gint height);
static void gimp_undo_real_pop (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum);
static void gimp_undo_real_free (GimpUndo *undo,
GimpUndoMode undo_mode);
static gboolean gimp_undo_create_preview_idle (gpointer data);
static void gimp_undo_create_preview_private (GimpUndo *undo);
static guint undo_signals[LAST_SIGNAL] = { 0 };
static GimpViewableClass *parent_class = NULL;
GType
gimp_undo_get_type (void)
{
static GType undo_type = 0;
if (! undo_type)
{
static const GTypeInfo undo_info =
{
sizeof (GimpUndoClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) gimp_undo_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GimpUndo),
0, /* n_preallocs */
NULL /* instance_init */
};
undo_type = g_type_register_static (GIMP_TYPE_VIEWABLE,
"GimpUndo",
&undo_info, 0);
}
return undo_type;
}
static void
gimp_undo_class_init (GimpUndoClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GimpObjectClass *gimp_object_class = GIMP_OBJECT_CLASS (klass);
GimpViewableClass *viewable_class = GIMP_VIEWABLE_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
undo_signals[POP] =
g_signal_new ("pop",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpUndoClass, pop),
NULL, NULL,
gimp_marshal_VOID__ENUM_POINTER,
G_TYPE_NONE, 2,
GIMP_TYPE_UNDO_MODE,
G_TYPE_POINTER);
undo_signals[FREE] =
g_signal_new ("free",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpUndoClass, free),
NULL, NULL,
gimp_marshal_VOID__ENUM,
G_TYPE_NONE, 1,
GIMP_TYPE_UNDO_MODE);
object_class->constructor = gimp_undo_constructor;
object_class->finalize = gimp_undo_finalize;
object_class->set_property = gimp_undo_set_property;
object_class->get_property = gimp_undo_get_property;
gimp_object_class->get_memsize = gimp_undo_get_memsize;
viewable_class->default_stock_id = "gtk-undo";
viewable_class->get_popup_size = gimp_undo_get_popup_size;
viewable_class->get_new_preview = gimp_undo_get_new_preview;
klass->pop = gimp_undo_real_pop;
klass->free = gimp_undo_real_free;
g_object_class_install_property (object_class, PROP_IMAGE,
g_param_spec_object ("image", NULL, NULL,
GIMP_TYPE_IMAGE,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY));
g_object_class_install_property (object_class, PROP_UNDO_TYPE,
g_param_spec_enum ("undo-type", NULL, NULL,
GIMP_TYPE_UNDO_TYPE,
GIMP_UNDO_GROUP_NONE,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY));
g_object_class_install_property (object_class, PROP_DIRTIES_IMAGE,
g_param_spec_boolean ("dirties-image",
NULL, NULL,
FALSE,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY));
g_object_class_install_property (object_class, PROP_DATA,
g_param_spec_pointer ("data", NULL, NULL,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY));
g_object_class_install_property (object_class, PROP_SIZE,
g_param_spec_int64 ("size", NULL, NULL,
0, G_MAXINT64, 0,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT));
g_object_class_install_property (object_class, PROP_POP_FUNC,
g_param_spec_pointer ("pop-func", NULL, NULL,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY));
g_object_class_install_property (object_class, PROP_FREE_FUNC,
g_param_spec_pointer ("free-func", NULL, NULL,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY));
}
static GObject *
gimp_undo_constructor (GType type,
guint n_params,
GObjectConstructParam *params)
{
GObject *object;
GimpUndo *undo;
object = G_OBJECT_CLASS (parent_class)->constructor (type, n_params, params);
undo = GIMP_UNDO (object);
g_assert (GIMP_IS_IMAGE (undo->gimage));
undo->time = time (NULL);
return object;
}
static void
gimp_undo_finalize (GObject *object)
{
GimpUndo *undo = GIMP_UNDO (object);
if (undo->preview_idle_id)
{
g_source_remove (undo->preview_idle_id);
undo->preview_idle_id = 0;
}
if (undo->preview)
{
temp_buf_free (undo->preview);
undo->preview = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gimp_undo_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GimpUndo *undo = GIMP_UNDO (object);
switch (property_id)
{
case PROP_IMAGE:
/* don't ref */
undo->gimage = (GimpImage *) g_value_get_object (value);
break;
case PROP_UNDO_TYPE:
undo->undo_type = g_value_get_enum (value);
break;
case PROP_DIRTIES_IMAGE:
undo->dirties_image = g_value_get_boolean (value);
break;
case PROP_DATA:
undo->data = g_value_get_pointer (value);
break;
case PROP_SIZE:
undo->size = g_value_get_int64 (value);
break;
case PROP_POP_FUNC:
undo->pop_func = g_value_get_pointer (value);
break;
case PROP_FREE_FUNC:
undo->free_func = g_value_get_pointer (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gimp_undo_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GimpUndo *undo = GIMP_UNDO (object);
switch (property_id)
{
case PROP_IMAGE:
g_value_set_object (value, undo->gimage);
break;
case PROP_UNDO_TYPE:
g_value_set_enum (value, undo->undo_type);
break;
case PROP_DIRTIES_IMAGE:
g_value_set_boolean (value, undo->dirties_image);
break;
case PROP_DATA:
g_value_set_pointer (value, undo->data);
break;
case PROP_SIZE:
g_value_set_int64 (value, undo->size);
break;
case PROP_POP_FUNC:
g_value_set_pointer (value, undo->pop_func);
break;
case PROP_FREE_FUNC:
g_value_set_pointer (value, undo->free_func);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static gint64
gimp_undo_get_memsize (GimpObject *object,
gint64 *gui_size)
{
GimpUndo *undo = GIMP_UNDO (object);
gint64 memsize = undo->size;
if (undo->preview)
*gui_size += temp_buf_get_memsize (undo->preview);
return memsize + GIMP_OBJECT_CLASS (parent_class)->get_memsize (object,
gui_size);
}
static gboolean
gimp_undo_get_popup_size (GimpViewable *viewable,
gint width,
gint height,
gboolean dot_for_dot,
gint *popup_width,
gint *popup_height)
{
GimpUndo *undo = GIMP_UNDO (viewable);
if (undo->preview &&
(undo->preview->width > width || undo->preview->height > height))
{
*popup_width = undo->preview->width;
*popup_height = undo->preview->height;
return TRUE;
}
return FALSE;
}
static TempBuf *
gimp_undo_get_new_preview (GimpViewable *viewable,
gint width,
gint height)
{
GimpUndo *undo = GIMP_UNDO (viewable);
if (undo->preview)
{
gint preview_width;
gint preview_height;
gimp_viewable_calc_preview_size (undo->preview->width,
undo->preview->height,
width,
height,
TRUE, 1.0, 1.0,
&preview_width,
&preview_height,
NULL);
if (preview_width < undo->preview->width &&
preview_height < undo->preview->height)
{
return temp_buf_scale (undo->preview, preview_width, preview_height);
}
return temp_buf_copy (undo->preview, NULL);
}
return NULL;
}
static void
gimp_undo_real_pop (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum)
{
if (undo->pop_func)
undo->pop_func (undo, undo_mode, accum);
}
static void
gimp_undo_real_free (GimpUndo *undo,
GimpUndoMode undo_mode)
{
if (undo->free_func)
undo->free_func (undo, undo_mode);
}
void
gimp_undo_pop (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum)
{
g_return_if_fail (GIMP_IS_UNDO (undo));
g_return_if_fail (accum != NULL);
g_signal_emit (undo, undo_signals[POP], 0, undo_mode, accum);
if (undo->dirties_image)
{
switch (undo_mode)
{
case GIMP_UNDO_MODE_UNDO:
gimp_image_clean (undo->gimage);
break;
case GIMP_UNDO_MODE_REDO:
gimp_image_dirty (undo->gimage);
break;
}
}
}
void
gimp_undo_free (GimpUndo *undo,
GimpUndoMode undo_mode)
{
g_return_if_fail (GIMP_IS_UNDO (undo));
g_signal_emit (undo, undo_signals[FREE], 0, undo_mode);
}
void
gimp_undo_create_preview (GimpUndo *undo,
gboolean create_now)
{
g_return_if_fail (GIMP_IS_UNDO (undo));
if (undo->preview || undo->preview_idle_id)
return;
if (create_now)
gimp_undo_create_preview_private (undo);
else
undo->preview_idle_id = g_idle_add (gimp_undo_create_preview_idle, undo);
}
static gboolean
gimp_undo_create_preview_idle (gpointer data)
{
GimpUndo *undo = GIMP_UNDO (data);
if (undo == gimp_undo_stack_peek (undo->gimage->undo_stack))
{
gimp_undo_create_preview_private (undo);
}
undo->preview_idle_id = 0;
return FALSE;
}
static void
gimp_undo_create_preview_private (GimpUndo *undo)
{
GimpImage *image = undo->gimage;
GimpViewable *preview_viewable;
GimpPreviewSize preview_size;
gint width;
gint height;
switch (undo->undo_type)
{
case GIMP_UNDO_GROUP_IMAGE_QMASK:
case GIMP_UNDO_GROUP_MASK:
case GIMP_UNDO_MASK:
preview_viewable = GIMP_VIEWABLE (gimp_image_get_mask (image));
break;
default:
preview_viewable = GIMP_VIEWABLE (image);
break;
}
preview_size = image->gimp->config->undo_preview_size;
if (image->width <= preview_size && image->height <= preview_size)
{
width = image->width;
height = image->height;
}
else
{
if (image->width > image->height)
{
width = preview_size;
height = MAX (1, (image->height * preview_size / image->width));
}
else
{
height = preview_size;
width = MAX (1, (image->width * preview_size / image->height));
}
}
undo->preview = gimp_viewable_get_new_preview (preview_viewable,
width, height);
gimp_viewable_invalidate_preview (GIMP_VIEWABLE (undo));
}
void
gimp_undo_refresh_preview (GimpUndo *undo)
{
g_return_if_fail (GIMP_IS_UNDO (undo));
if (undo->preview_idle_id)
return;
if (undo->preview)
{
temp_buf_free (undo->preview);
undo->preview = NULL;
gimp_undo_create_preview (undo, FALSE);
}
}
const gchar *
gimp_undo_type_to_name (GimpUndoType type)
{
static GEnumClass *enum_class = NULL;
GEnumValue *value;
if (! enum_class)
enum_class = g_type_class_ref (GIMP_TYPE_UNDO_TYPE);
value = g_enum_get_value (enum_class, type);
if (value && value->value_name)
return gettext (value->value_name);
else
return "";
}
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