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gimp/app/core/gimpimage.c

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/* GIMP - The GNU 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 <string.h>
#include <time.h>
#include <glib-object.h>
#include "libgimpcolor/gimpcolor.h"
#include "libgimpmath/gimpmath.h"
#include "libgimpbase/gimpbase.h"
#include "libgimpconfig/gimpconfig.h"
#include "core-types.h"
#include "base/temp-buf.h"
#include "base/tile-manager.h"
#include "config/gimpcoreconfig.h"
#include "gimp.h"
#include "gimp-parasites.h"
#include "gimp-utils.h"
#include "gimpcontext.h"
#include "gimpgrid.h"
#include "gimpguide.h"
#include "gimpimage.h"
#include "gimpimage-colorhash.h"
#include "gimpimage-colormap.h"
#include "gimpimage-guides.h"
#include "gimpimage-sample-points.h"
#include "gimpimage-preview.h"
#include "gimpimage-quick-mask.h"
#include "gimpimage-undo.h"
#include "gimpimage-undo-push.h"
#include "gimplayer.h"
#include "gimplayer-floating-sel.h"
#include "gimplayermask.h"
#include "gimplist.h"
#include "gimpmarshal.h"
#include "gimpparasitelist.h"
#include "gimppickable.h"
#include "gimpprojection.h"
#include "gimpsamplepoint.h"
#include "gimpselection.h"
#include "gimptemplate.h"
#include "gimpundostack.h"
#include "file/file-utils.h"
#include "vectors/gimpvectors.h"
#include "gimp-intl.h"
#ifdef DEBUG
#define TRC(x) printf x
#else
#define TRC(x)
#endif
enum
{
MODE_CHANGED,
ALPHA_CHANGED,
FLOATING_SELECTION_CHANGED,
ACTIVE_LAYER_CHANGED,
ACTIVE_CHANNEL_CHANGED,
ACTIVE_VECTORS_CHANGED,
COMPONENT_VISIBILITY_CHANGED,
COMPONENT_ACTIVE_CHANGED,
MASK_CHANGED,
RESOLUTION_CHANGED,
UNIT_CHANGED,
QUICK_MASK_CHANGED,
SELECTION_CONTROL,
CLEAN,
DIRTY,
SAVED,
UPDATE,
UPDATE_GUIDE,
UPDATE_SAMPLE_POINT,
SAMPLE_POINT_ADDED,
SAMPLE_POINT_REMOVED,
PARASITE_ATTACHED,
PARASITE_DETACHED,
COLORMAP_CHANGED,
UNDO_EVENT,
FLUSH,
LAST_SIGNAL
};
enum
{
PROP_0,
PROP_GIMP,
PROP_ID,
PROP_WIDTH,
PROP_HEIGHT,
PROP_BASE_TYPE
};
/* local function prototypes */
static GObject *gimp_image_constructor (GType type,
guint n_params,
GObjectConstructParam *params);
static void gimp_image_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void gimp_image_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
static void gimp_image_dispose (GObject *object);
static void gimp_image_finalize (GObject *object);
static void gimp_image_name_changed (GimpObject *object);
static gint64 gimp_image_get_memsize (GimpObject *object,
gint64 *gui_size);
static gboolean gimp_image_get_size (GimpViewable *viewable,
gint *width,
gint *height);
static void gimp_image_invalidate_preview (GimpViewable *viewable);
static void gimp_image_size_changed (GimpViewable *viewable);
static gchar * gimp_image_get_description (GimpViewable *viewable,
gchar **tooltip);
static void gimp_image_real_colormap_changed (GimpImage *image,
gint color_index);
static void gimp_image_real_flush (GimpImage *image);
static void gimp_image_mask_update (GimpDrawable *drawable,
gint x,
gint y,
gint width,
gint height,
GimpImage *image);
static void gimp_image_drawable_update (GimpDrawable *drawable,
gint x,
gint y,
gint width,
gint height,
GimpImage *image);
static void gimp_image_drawable_visibility (GimpItem *item,
GimpImage *image);
static void gimp_image_layer_alpha_changed (GimpDrawable *drawable,
GimpImage *image);
static void gimp_image_layer_add (GimpContainer *container,
GimpLayer *layer,
GimpImage *image);
static void gimp_image_layer_remove (GimpContainer *container,
GimpLayer *layer,
GimpImage *image);
static void gimp_image_channel_add (GimpContainer *container,
GimpChannel *channel,
GimpImage *image);
static void gimp_image_channel_remove (GimpContainer *container,
GimpChannel *channel,
GimpImage *image);
static void gimp_image_channel_name_changed (GimpChannel *channel,
GimpImage *image);
static void gimp_image_channel_color_changed (GimpChannel *channel,
GimpImage *image);
static const gint valid_combinations[][MAX_CHANNELS + 1] =
{
/* GIMP_RGB_IMAGE */
{ -1, -1, -1, COMBINE_INTEN_INTEN, COMBINE_INTEN_INTEN_A },
/* GIMP_RGBA_IMAGE */
{ -1, -1, -1, COMBINE_INTEN_A_INTEN, COMBINE_INTEN_A_INTEN_A },
/* GIMP_GRAY_IMAGE */
{ -1, COMBINE_INTEN_INTEN, COMBINE_INTEN_INTEN_A, -1, -1 },
/* GIMP_GRAYA_IMAGE */
{ -1, COMBINE_INTEN_A_INTEN, COMBINE_INTEN_A_INTEN_A, -1, -1 },
/* GIMP_INDEXED_IMAGE */
{ -1, COMBINE_INDEXED_INDEXED, COMBINE_INDEXED_INDEXED_A, -1, -1 },
/* GIMP_INDEXEDA_IMAGE */
{ -1, -1, COMBINE_INDEXED_A_INDEXED_A, -1, -1 },
};
G_DEFINE_TYPE (GimpImage, gimp_image, GIMP_TYPE_VIEWABLE)
#define parent_class gimp_image_parent_class
static guint gimp_image_signals[LAST_SIGNAL] = { 0 };
static void
gimp_image_class_init (GimpImageClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GimpObjectClass *gimp_object_class = GIMP_OBJECT_CLASS (klass);
GimpViewableClass *viewable_class = GIMP_VIEWABLE_CLASS (klass);
gimp_image_signals[MODE_CHANGED] =
g_signal_new ("mode-changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpImageClass, mode_changed),
NULL, NULL,
gimp_marshal_VOID__VOID,
G_TYPE_NONE, 0);
gimp_image_signals[ALPHA_CHANGED] =
g_signal_new ("alpha-changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpImageClass, alpha_changed),
NULL, NULL,
gimp_marshal_VOID__VOID,
G_TYPE_NONE, 0);
gimp_image_signals[FLOATING_SELECTION_CHANGED] =
g_signal_new ("floating-selection-changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpImageClass, floating_selection_changed),
NULL, NULL,
gimp_marshal_VOID__VOID,
G_TYPE_NONE, 0);
gimp_image_signals[ACTIVE_LAYER_CHANGED] =
g_signal_new ("active-layer-changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpImageClass, active_layer_changed),
NULL, NULL,
gimp_marshal_VOID__VOID,
G_TYPE_NONE, 0);
gimp_image_signals[ACTIVE_CHANNEL_CHANGED] =
g_signal_new ("active-channel-changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpImageClass, active_channel_changed),
NULL, NULL,
gimp_marshal_VOID__VOID,
G_TYPE_NONE, 0);
gimp_image_signals[ACTIVE_VECTORS_CHANGED] =
g_signal_new ("active-vectors-changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpImageClass, active_vectors_changed),
NULL, NULL,
gimp_marshal_VOID__VOID,
G_TYPE_NONE, 0);
gimp_image_signals[COMPONENT_VISIBILITY_CHANGED] =
g_signal_new ("component-visibility-changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpImageClass, component_visibility_changed),
NULL, NULL,
gimp_marshal_VOID__ENUM,
G_TYPE_NONE, 1,
GIMP_TYPE_CHANNEL_TYPE);
gimp_image_signals[COMPONENT_ACTIVE_CHANGED] =
g_signal_new ("component-active-changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpImageClass, component_active_changed),
NULL, NULL,
gimp_marshal_VOID__ENUM,
G_TYPE_NONE, 1,
GIMP_TYPE_CHANNEL_TYPE);
gimp_image_signals[MASK_CHANGED] =
g_signal_new ("mask-changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpImageClass, mask_changed),
NULL, NULL,
gimp_marshal_VOID__VOID,
G_TYPE_NONE, 0);
gimp_image_signals[RESOLUTION_CHANGED] =
g_signal_new ("resolution-changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpImageClass, resolution_changed),
NULL, NULL,
gimp_marshal_VOID__VOID,
G_TYPE_NONE, 0);
gimp_image_signals[UNIT_CHANGED] =
g_signal_new ("unit-changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpImageClass, unit_changed),
NULL, NULL,
gimp_marshal_VOID__VOID,
G_TYPE_NONE, 0);
gimp_image_signals[QUICK_MASK_CHANGED] =
g_signal_new ("quick-mask-changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpImageClass, quick_mask_changed),
NULL, NULL,
gimp_marshal_VOID__VOID,
G_TYPE_NONE, 0);
gimp_image_signals[SELECTION_CONTROL] =
g_signal_new ("selection-control",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpImageClass, selection_control),
NULL, NULL,
gimp_marshal_VOID__ENUM,
G_TYPE_NONE, 1,
GIMP_TYPE_SELECTION_CONTROL);
gimp_image_signals[CLEAN] =
g_signal_new ("clean",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpImageClass, clean),
NULL, NULL,
gimp_marshal_VOID__FLAGS,
G_TYPE_NONE, 1,
GIMP_TYPE_DIRTY_MASK);
gimp_image_signals[DIRTY] =
g_signal_new ("dirty",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpImageClass, dirty),
NULL, NULL,
gimp_marshal_VOID__FLAGS,
G_TYPE_NONE, 1,
GIMP_TYPE_DIRTY_MASK);
gimp_image_signals[SAVED] =
g_signal_new ("saved",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpImageClass, saved),
NULL, NULL,
gimp_marshal_VOID__STRING,
G_TYPE_NONE, 1,
G_TYPE_STRING);
gimp_image_signals[UPDATE] =
g_signal_new ("update",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpImageClass, update),
NULL, NULL,
gimp_marshal_VOID__INT_INT_INT_INT,
G_TYPE_NONE, 4,
G_TYPE_INT,
G_TYPE_INT,
G_TYPE_INT,
G_TYPE_INT);
gimp_image_signals[UPDATE_GUIDE] =
g_signal_new ("update-guide",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpImageClass, update_guide),
NULL, NULL,
gimp_marshal_VOID__POINTER,
G_TYPE_NONE, 1,
G_TYPE_POINTER);
gimp_image_signals[UPDATE_SAMPLE_POINT] =
g_signal_new ("update-sample-point",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpImageClass, update_sample_point),
NULL, NULL,
gimp_marshal_VOID__POINTER,
G_TYPE_NONE, 1,
G_TYPE_POINTER);
gimp_image_signals[SAMPLE_POINT_ADDED] =
g_signal_new ("sample-point-added",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpImageClass, sample_point_added),
NULL, NULL,
gimp_marshal_VOID__POINTER,
G_TYPE_NONE, 1,
G_TYPE_POINTER);
gimp_image_signals[SAMPLE_POINT_REMOVED] =
g_signal_new ("sample-point-removed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpImageClass, sample_point_removed),
NULL, NULL,
gimp_marshal_VOID__POINTER,
G_TYPE_NONE, 1,
G_TYPE_POINTER);
gimp_image_signals[PARASITE_ATTACHED] =
g_signal_new ("parasite-attached",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpImageClass, parasite_attached),
NULL, NULL,
g_cclosure_marshal_VOID__STRING,
G_TYPE_NONE, 1,
G_TYPE_STRING);
gimp_image_signals[PARASITE_DETACHED] =
g_signal_new ("parasite-detached",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpImageClass, parasite_detached),
NULL, NULL,
g_cclosure_marshal_VOID__STRING,
G_TYPE_NONE, 1,
G_TYPE_STRING);
gimp_image_signals[COLORMAP_CHANGED] =
g_signal_new ("colormap-changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpImageClass, colormap_changed),
NULL, NULL,
gimp_marshal_VOID__INT,
G_TYPE_NONE, 1,
G_TYPE_INT);
gimp_image_signals[UNDO_EVENT] =
g_signal_new ("undo-event",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpImageClass, undo_event),
NULL, NULL,
gimp_marshal_VOID__ENUM_OBJECT,
G_TYPE_NONE, 2,
GIMP_TYPE_UNDO_EVENT,
GIMP_TYPE_UNDO);
gimp_image_signals[FLUSH] =
g_signal_new ("flush",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpImageClass, flush),
NULL, NULL,
gimp_marshal_VOID__VOID,
G_TYPE_NONE, 0);
object_class->constructor = gimp_image_constructor;
object_class->set_property = gimp_image_set_property;
object_class->get_property = gimp_image_get_property;
object_class->dispose = gimp_image_dispose;
object_class->finalize = gimp_image_finalize;
gimp_object_class->name_changed = gimp_image_name_changed;
gimp_object_class->get_memsize = gimp_image_get_memsize;
viewable_class->default_stock_id = "gimp-image";
viewable_class->get_size = gimp_image_get_size;
viewable_class->invalidate_preview = gimp_image_invalidate_preview;
viewable_class->size_changed = gimp_image_size_changed;
viewable_class->get_preview_size = gimp_image_get_preview_size;
viewable_class->get_popup_size = gimp_image_get_popup_size;
viewable_class->get_preview = gimp_image_get_preview;
viewable_class->get_new_preview = gimp_image_get_new_preview;
viewable_class->get_description = gimp_image_get_description;
klass->mode_changed = NULL;
klass->alpha_changed = NULL;
klass->floating_selection_changed = NULL;
klass->active_layer_changed = NULL;
klass->active_channel_changed = NULL;
klass->active_vectors_changed = NULL;
klass->component_visibility_changed = NULL;
klass->component_active_changed = NULL;
klass->mask_changed = NULL;
klass->clean = NULL;
klass->dirty = NULL;
klass->saved = NULL;
klass->update = NULL;
klass->update_guide = NULL;
klass->update_sample_point = NULL;
klass->sample_point_added = NULL;
klass->sample_point_removed = NULL;
klass->parasite_attached = NULL;
klass->parasite_detached = NULL;
klass->colormap_changed = gimp_image_real_colormap_changed;
klass->undo_event = NULL;
klass->flush = gimp_image_real_flush;
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_ID,
g_param_spec_int ("id", NULL, NULL,
0, G_MAXINT, 0,
GIMP_PARAM_READABLE));
g_object_class_install_property (object_class, PROP_WIDTH,
g_param_spec_int ("width", NULL, NULL,
1, GIMP_MAX_IMAGE_SIZE, 1,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT));
g_object_class_install_property (object_class, PROP_HEIGHT,
g_param_spec_int ("height", NULL, NULL,
1, GIMP_MAX_IMAGE_SIZE, 1,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT));
g_object_class_install_property (object_class, PROP_BASE_TYPE,
g_param_spec_enum ("base-type", NULL, NULL,
GIMP_TYPE_IMAGE_BASE_TYPE,
GIMP_RGB,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT));
gimp_image_color_hash_init ();
}
static void
gimp_image_init (GimpImage *image)
{
gint i;
image->ID = 0;
image->save_proc = NULL;
image->width = 0;
image->height = 0;
image->xresolution = 1.0;
image->yresolution = 1.0;
image->resolution_unit = GIMP_UNIT_INCH;
image->base_type = GIMP_RGB;
image->cmap = NULL;
image->num_cols = 0;
image->dirty = 1;
image->dirty_time = 0;
image->undo_freeze_count = 0;
image->instance_count = 0;
image->disp_count = 0;
image->tattoo_state = 0;
image->shadow = NULL;
image->projection = gimp_projection_new (image);
image->guides = NULL;
image->grid = NULL;
image->sample_points = NULL;
image->layers = gimp_list_new (GIMP_TYPE_LAYER, TRUE);
image->channels = gimp_list_new (GIMP_TYPE_CHANNEL, TRUE);
image->vectors = gimp_list_new (GIMP_TYPE_VECTORS, TRUE);
image->layer_stack = NULL;
image->layer_update_handler =
gimp_container_add_handler (image->layers, "update",
G_CALLBACK (gimp_image_drawable_update),
image);
image->layer_visible_handler =
gimp_container_add_handler (image->layers, "visibility-changed",
G_CALLBACK (gimp_image_drawable_visibility),
image);
image->layer_alpha_handler =
gimp_container_add_handler (image->layers, "alpha-changed",
G_CALLBACK (gimp_image_layer_alpha_changed),
image);
image->channel_update_handler =
gimp_container_add_handler (image->channels, "update",
G_CALLBACK (gimp_image_drawable_update),
image);
image->channel_visible_handler =
gimp_container_add_handler (image->channels, "visibility-changed",
G_CALLBACK (gimp_image_drawable_visibility),
image);
image->channel_name_changed_handler =
gimp_container_add_handler (image->channels, "name-changed",
G_CALLBACK (gimp_image_channel_name_changed),
image);
image->channel_color_changed_handler =
gimp_container_add_handler (image->channels, "color-changed",
G_CALLBACK (gimp_image_channel_color_changed),
image);
g_signal_connect (image->layers, "add",
G_CALLBACK (gimp_image_layer_add),
image);
g_signal_connect (image->layers, "remove",
G_CALLBACK (gimp_image_layer_remove),
image);
g_signal_connect (image->channels, "add",
G_CALLBACK (gimp_image_channel_add),
image);
g_signal_connect (image->channels, "remove",
G_CALLBACK (gimp_image_channel_remove),
image);
image->active_layer = NULL;
image->active_channel = NULL;
image->active_vectors = NULL;
image->floating_sel = NULL;
image->selection_mask = NULL;
image->parasites = gimp_parasite_list_new ();
for (i = 0; i < MAX_CHANNELS; i++)
{
image->visible[i] = TRUE;
image->active[i] = TRUE;
}
image->quick_mask_state = FALSE;
image->quick_mask_inverted = FALSE;
gimp_rgba_set (&image->quick_mask_color, 1.0, 0.0, 0.0, 0.5);
image->undo_stack = gimp_undo_stack_new (image);
image->redo_stack = gimp_undo_stack_new (image);
image->group_count = 0;
image->pushing_undo_group = GIMP_UNDO_GROUP_NONE;
image->comp_preview = NULL;
image->comp_preview_valid = FALSE;
image->flush_accum.alpha_changed = FALSE;
image->flush_accum.mask_changed = FALSE;
}
static GObject *
gimp_image_constructor (GType type,
guint n_params,
GObjectConstructParam *params)
{
GObject *object;
GimpImage *image;
GimpCoreConfig *config;
object = G_OBJECT_CLASS (parent_class)->constructor (type, n_params, params);
image = GIMP_IMAGE (object);
g_assert (GIMP_IS_GIMP (image->gimp));
config = image->gimp->config;
do
{
image->ID = image->gimp->next_image_ID++;
if (image->gimp->next_image_ID == G_MAXINT)
image->gimp->next_image_ID = 1;
}
while (g_hash_table_lookup (image->gimp->image_table,
GINT_TO_POINTER (image->ID)));
g_hash_table_insert (image->gimp->image_table,
GINT_TO_POINTER (image->ID),
image);
image->xresolution = config->default_image->xresolution;
image->yresolution = config->default_image->yresolution;
image->resolution_unit = config->default_image->resolution_unit;
image->grid = gimp_config_duplicate (GIMP_CONFIG (config->default_grid));
switch (image->base_type)
{
case GIMP_RGB:
case GIMP_GRAY:
break;
case GIMP_INDEXED:
/* always allocate 256 colors for the colormap */
image->num_cols = 0;
image->cmap = g_new0 (guchar, GIMP_IMAGE_COLORMAP_SIZE);
break;
default:
break;
}
/* create the selection mask */
image->selection_mask = gimp_selection_new (image,
image->width,
image->height);
g_object_ref_sink (image->selection_mask);
g_signal_connect (image->selection_mask, "update",
G_CALLBACK (gimp_image_mask_update),
image);
g_signal_connect_object (config, "notify::transparency-type",
G_CALLBACK (gimp_image_invalidate_layer_previews),
image, G_CONNECT_SWAPPED);
g_signal_connect_object (config, "notify::transparency-size",
G_CALLBACK (gimp_image_invalidate_layer_previews),
image, G_CONNECT_SWAPPED);
g_signal_connect_object (config, "notify::layer-previews",
G_CALLBACK (gimp_viewable_size_changed),
image, G_CONNECT_SWAPPED);
gimp_container_add (image->gimp->images, GIMP_OBJECT (image));
return object;
}
static void
gimp_image_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GimpImage *image = GIMP_IMAGE (object);
switch (property_id)
{
case PROP_GIMP:
image->gimp = g_value_get_object (value);
break;
case PROP_ID:
g_assert_not_reached ();
break;
case PROP_WIDTH:
image->width = g_value_get_int (value);
break;
case PROP_HEIGHT:
image->height = g_value_get_int (value);
break;
case PROP_BASE_TYPE:
image->base_type = g_value_get_enum (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gimp_image_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GimpImage *image = GIMP_IMAGE (object);
switch (property_id)
{
case PROP_GIMP:
g_value_set_object (value, image->gimp);
break;
case PROP_ID:
g_value_set_int (value, image->ID);
break;
case PROP_WIDTH:
g_value_set_int (value, image->width);
break;
case PROP_HEIGHT:
g_value_set_int (value, image->height);
break;
case PROP_BASE_TYPE:
g_value_set_enum (value, image->base_type);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gimp_image_dispose (GObject *object)
{
GimpImage *image = GIMP_IMAGE (object);
gimp_image_undo_free (image);
gimp_container_remove_handler (image->layers,
image->layer_update_handler);
gimp_container_remove_handler (image->layers,
image->layer_visible_handler);
gimp_container_remove_handler (image->layers,
image->layer_alpha_handler);
gimp_container_remove_handler (image->channels,
image->channel_update_handler);
gimp_container_remove_handler (image->channels,
image->channel_visible_handler);
gimp_container_remove_handler (image->channels,
image->channel_name_changed_handler);
gimp_container_remove_handler (image->channels,
image->channel_color_changed_handler);
g_signal_handlers_disconnect_by_func (image->layers,
gimp_image_layer_add,
image);
g_signal_handlers_disconnect_by_func (image->layers,
gimp_image_layer_remove,
image);
g_signal_handlers_disconnect_by_func (image->channels,
gimp_image_channel_add,
image);
g_signal_handlers_disconnect_by_func (image->channels,
gimp_image_channel_remove,
image);
gimp_container_foreach (image->layers, (GFunc) gimp_item_removed, NULL);
gimp_container_foreach (image->channels, (GFunc) gimp_item_removed, NULL);
gimp_container_foreach (image->vectors, (GFunc) gimp_item_removed, NULL);
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
gimp_image_finalize (GObject *object)
{
GimpImage *image = GIMP_IMAGE (object);
if (image->projection)
{
g_object_unref (image->projection);
image->projection = NULL;
}
if (image->shadow)
gimp_image_free_shadow_tiles (image);
if (image->cmap)
{
g_free (image->cmap);
image->cmap = NULL;
}
if (image->layers)
{
g_object_unref (image->layers);
image->layers = NULL;
}
if (image->channels)
{
g_object_unref (image->channels);
image->channels = NULL;
}
if (image->vectors)
{
g_object_unref (image->vectors);
image->vectors = NULL;
}
if (image->layer_stack)
{
g_slist_free (image->layer_stack);
image->layer_stack = NULL;
}
if (image->selection_mask)
{
g_object_unref (image->selection_mask);
image->selection_mask = NULL;
}
if (image->comp_preview)
{
temp_buf_free (image->comp_preview);
image->comp_preview = NULL;
}
if (image->parasites)
{
g_object_unref (image->parasites);
image->parasites = NULL;
}
if (image->guides)
{
g_list_foreach (image->guides, (GFunc) g_object_unref, NULL);
g_list_free (image->guides);
image->guides = NULL;
}
if (image->grid)
{
g_object_unref (image->grid);
image->grid = NULL;
}
if (image->sample_points)
{
g_list_foreach (image->sample_points,
(GFunc) gimp_sample_point_unref, NULL);
g_list_free (image->sample_points);
image->sample_points = NULL;
}
if (image->undo_stack)
{
g_object_unref (image->undo_stack);
image->undo_stack = NULL;
}
if (image->redo_stack)
{
g_object_unref (image->redo_stack);
image->redo_stack = NULL;
}
if (image->gimp && image->gimp->image_table)
{
g_hash_table_remove (image->gimp->image_table,
GINT_TO_POINTER (image->ID));
image->gimp = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gimp_image_name_changed (GimpObject *object)
{
const gchar *name;
if (GIMP_OBJECT_CLASS (parent_class)->name_changed)
GIMP_OBJECT_CLASS (parent_class)->name_changed (object);
name = gimp_object_get_name (object);
if (! (name && strlen (name)))
{
g_free (object->name);
object->name = NULL;
}
}
static gint64
gimp_image_get_memsize (GimpObject *object,
gint64 *gui_size)
{
GimpImage *image = GIMP_IMAGE (object);
gint64 memsize = 0;
if (image->cmap)
memsize += GIMP_IMAGE_COLORMAP_SIZE;
if (image->shadow)
memsize += tile_manager_get_memsize (image->shadow, FALSE);
if (image->projection)
memsize += gimp_object_get_memsize (GIMP_OBJECT (image->projection),
gui_size);
memsize += gimp_g_list_get_memsize (image->guides, sizeof (GimpGuide));
if (image->grid)
memsize += gimp_object_get_memsize (GIMP_OBJECT (image->grid), gui_size);
memsize += gimp_g_list_get_memsize (image->sample_points,
sizeof (GimpSamplePoint));
memsize += gimp_object_get_memsize (GIMP_OBJECT (image->layers),
gui_size);
memsize += gimp_object_get_memsize (GIMP_OBJECT (image->channels),
gui_size);
memsize += gimp_object_get_memsize (GIMP_OBJECT (image->vectors),
gui_size);
memsize += gimp_g_slist_get_memsize (image->layer_stack, 0);
if (image->selection_mask)
memsize += gimp_object_get_memsize (GIMP_OBJECT (image->selection_mask),
gui_size);
memsize += gimp_object_get_memsize (GIMP_OBJECT (image->parasites),
gui_size);
memsize += gimp_object_get_memsize (GIMP_OBJECT (image->undo_stack),
gui_size);
memsize += gimp_object_get_memsize (GIMP_OBJECT (image->redo_stack),
gui_size);
if (image->comp_preview)
*gui_size += temp_buf_get_memsize (image->comp_preview);
return memsize + GIMP_OBJECT_CLASS (parent_class)->get_memsize (object,
gui_size);
}
static gboolean
gimp_image_get_size (GimpViewable *viewable,
gint *width,
gint *height)
{
GimpImage *image = GIMP_IMAGE (viewable);
*width = image->width;
*height = image->height;
return TRUE;
}
static void
gimp_image_invalidate_preview (GimpViewable *viewable)
{
GimpImage *image = GIMP_IMAGE (viewable);
if (GIMP_VIEWABLE_CLASS (parent_class)->invalidate_preview)
GIMP_VIEWABLE_CLASS (parent_class)->invalidate_preview (viewable);
image->comp_preview_valid = FALSE;
if (image->comp_preview)
{
temp_buf_free (image->comp_preview);
image->comp_preview = NULL;
}
}
static void
gimp_image_size_changed (GimpViewable *viewable)
{
GimpImage *image = GIMP_IMAGE (viewable);
GList *list;
if (GIMP_VIEWABLE_CLASS (parent_class)->size_changed)
GIMP_VIEWABLE_CLASS (parent_class)->size_changed (viewable);
gimp_container_foreach (image->layers,
(GFunc) gimp_viewable_size_changed,
NULL);
gimp_container_foreach (image->channels,
(GFunc) gimp_viewable_size_changed,
NULL);
gimp_container_foreach (image->vectors,
(GFunc) gimp_viewable_size_changed,
NULL);
for (list = GIMP_LIST (image->layers)->list; list; list = g_list_next (list))
{
GimpLayerMask *mask = gimp_layer_get_mask (GIMP_LAYER (list->data));
if (mask)
gimp_viewable_size_changed (GIMP_VIEWABLE (mask));
}
gimp_viewable_size_changed (GIMP_VIEWABLE (gimp_image_get_mask (image)));
}
static gchar *
gimp_image_get_description (GimpViewable *viewable,
gchar **tooltip)
{
GimpImage *image = GIMP_IMAGE (viewable);
const gchar *uri;
gchar *basename;
gchar *retval;
uri = gimp_image_get_uri (GIMP_IMAGE (image));
basename = file_utils_uri_display_basename (uri);
if (tooltip)
*tooltip = file_utils_uri_display_name (uri);
retval = g_strdup_printf ("%s-%d", basename, gimp_image_get_ID (image));
g_free (basename);
return retval;
}
static void
gimp_image_real_colormap_changed (GimpImage *image,
gint color_index)
{
if (gimp_image_base_type (image) == GIMP_INDEXED)
{
gimp_image_color_hash_invalidate (image, color_index);
/* A colormap alteration affects the whole image */
gimp_image_update (image, 0, 0, image->width, image->height);
gimp_image_invalidate_layer_previews (image);
gimp_viewable_invalidate_preview (GIMP_VIEWABLE (image));
}
}
static void
gimp_image_real_flush (GimpImage *image)
{
if (image->flush_accum.alpha_changed)
{
gimp_image_alpha_changed (image);
image->flush_accum.alpha_changed = FALSE;
}
if (image->flush_accum.mask_changed)
{
gimp_image_mask_changed (image);
image->flush_accum.mask_changed = FALSE;
}
}
static void
gimp_image_mask_update (GimpDrawable *drawable,
gint x,
gint y,
gint width,
gint height,
GimpImage *image)
{
image->flush_accum.mask_changed = TRUE;
}
static void
gimp_image_drawable_update (GimpDrawable *drawable,
gint x,
gint y,
gint width,
gint height,
GimpImage *image)
{
GimpItem *item = GIMP_ITEM (drawable);
if (gimp_item_get_visible (item))
{
gint offset_x;
gint offset_y;
gimp_item_offsets (item, &offset_x, &offset_y);
x += offset_x;
y += offset_y;
gimp_image_update (image, x, y, width, height);
gimp_viewable_invalidate_preview (GIMP_VIEWABLE (image));
}
}
static void
gimp_image_drawable_visibility (GimpItem *item,
GimpImage *image)
{
gint offset_x;
gint offset_y;
gimp_item_offsets (item, &offset_x, &offset_y);
gimp_image_update (image,
offset_x, offset_y,
gimp_item_width (item),
gimp_item_height (item));
gimp_viewable_invalidate_preview (GIMP_VIEWABLE (image));
}
static void
gimp_image_layer_alpha_changed (GimpDrawable *drawable,
GimpImage *image)
{
if (gimp_container_num_children (image->layers) == 1)
image->flush_accum.alpha_changed = TRUE;
}
static void
gimp_image_layer_add (GimpContainer *container,
GimpLayer *layer,
GimpImage *image)
{
GimpItem *item = GIMP_ITEM (layer);
if (gimp_item_get_visible (item))
gimp_image_drawable_visibility (item, image);
}
static void
gimp_image_layer_remove (GimpContainer *container,
GimpLayer *layer,
GimpImage *image)
{
GimpItem *item = GIMP_ITEM (layer);
if (gimp_item_get_visible (item))
gimp_image_drawable_visibility (item, image);
}
static void
gimp_image_channel_add (GimpContainer *container,
GimpChannel *channel,
GimpImage *image)
{
GimpItem *item = GIMP_ITEM (channel);
if (gimp_item_get_visible (item))
gimp_image_drawable_visibility (item, image);
if (! strcmp (GIMP_IMAGE_QUICK_MASK_NAME,
gimp_object_get_name (GIMP_OBJECT (channel))))
{
gimp_image_set_quick_mask_state (image, TRUE);
}
}
static void
gimp_image_channel_remove (GimpContainer *container,
GimpChannel *channel,
GimpImage *image)
{
GimpItem *item = GIMP_ITEM (channel);
if (gimp_item_get_visible (item))
gimp_image_drawable_visibility (item, image);
if (! strcmp (GIMP_IMAGE_QUICK_MASK_NAME,
gimp_object_get_name (GIMP_OBJECT (channel))))
{
gimp_image_set_quick_mask_state (image, FALSE);
}
}
static void
gimp_image_channel_name_changed (GimpChannel *channel,
GimpImage *image)
{
if (! strcmp (GIMP_IMAGE_QUICK_MASK_NAME,
gimp_object_get_name (GIMP_OBJECT (channel))))
{
gimp_image_set_quick_mask_state (image, TRUE);
}
else if (gimp_image_get_quick_mask_state (image) &&
! gimp_image_get_quick_mask (image))
{
gimp_image_set_quick_mask_state (image, FALSE);
}
}
static void
gimp_image_channel_color_changed (GimpChannel *channel,
GimpImage *image)
{
if (! strcmp (GIMP_IMAGE_QUICK_MASK_NAME,
gimp_object_get_name (GIMP_OBJECT (channel))))
{
image->quick_mask_color = channel->color;
}
}
/* public functions */
GimpImage *
gimp_image_new (Gimp *gimp,
gint width,
gint height,
GimpImageBaseType base_type)
{
g_return_val_if_fail (GIMP_IS_GIMP (gimp), NULL);
return g_object_new (GIMP_TYPE_IMAGE,
"gimp", gimp,
"width", width,
"height", height,
"base-type", base_type,
NULL);
}
GimpImageBaseType
gimp_image_base_type (const GimpImage *image)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), -1);
return image->base_type;
}
GimpImageType
gimp_image_base_type_with_alpha (const GimpImage *image)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), -1);
switch (image->base_type)
{
case GIMP_RGB:
return GIMP_RGBA_IMAGE;
case GIMP_GRAY:
return GIMP_GRAYA_IMAGE;
case GIMP_INDEXED:
return GIMP_INDEXEDA_IMAGE;
}
return GIMP_RGB_IMAGE;
}
CombinationMode
gimp_image_get_combination_mode (GimpImageType dest_type,
gint src_bytes)
{
return valid_combinations[dest_type][src_bytes];
}
gint
gimp_image_get_ID (const GimpImage *image)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), -1);
return image->ID;
}
GimpImage *
gimp_image_get_by_ID (Gimp *gimp,
gint image_id)
{
g_return_val_if_fail (GIMP_IS_GIMP (gimp), NULL);
if (gimp->image_table == NULL)
return NULL;
return (GimpImage *) g_hash_table_lookup (gimp->image_table,
GINT_TO_POINTER (image_id));
}
void
gimp_image_set_uri (GimpImage *image,
const gchar *uri)
{
g_return_if_fail (GIMP_IS_IMAGE (image));
gimp_object_set_name (GIMP_OBJECT (image), uri);
}
static void
gimp_image_take_uri (GimpImage *image,
gchar *uri)
{
gimp_object_take_name (GIMP_OBJECT (image), uri);
}
const gchar *
gimp_image_get_uri (const GimpImage *image)
{
const gchar *uri;
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
uri = gimp_object_get_name (GIMP_OBJECT (image));
return uri ? uri : _("Untitled");
}
void
gimp_image_set_filename (GimpImage *image,
const gchar *filename)
{
g_return_if_fail (GIMP_IS_IMAGE (image));
if (filename && strlen (filename))
{
gimp_image_take_uri (image,
file_utils_filename_to_uri (image->gimp,
filename,
NULL));
}
else
{
gimp_image_set_uri (image, NULL);
}
}
gchar *
gimp_image_get_filename (const GimpImage *image)
{
const gchar *uri;
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
uri = gimp_object_get_name (GIMP_OBJECT (image));
if (! uri)
return NULL;
return g_filename_from_uri (uri, NULL, NULL);
}
void
gimp_image_set_save_proc (GimpImage *image,
GimpPlugInProcedure *proc)
{
g_return_if_fail (GIMP_IS_IMAGE (image));
image->save_proc = proc;
}
GimpPlugInProcedure *
gimp_image_get_save_proc (const GimpImage *image)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
return image->save_proc;
}
void
gimp_image_set_resolution (GimpImage *image,
gdouble xresolution,
gdouble yresolution)
{
g_return_if_fail (GIMP_IS_IMAGE (image));
/* don't allow to set the resolution out of bounds */
if (xresolution < GIMP_MIN_RESOLUTION || xresolution > GIMP_MAX_RESOLUTION ||
yresolution < GIMP_MIN_RESOLUTION || yresolution > GIMP_MAX_RESOLUTION)
return;
if ((ABS (image->xresolution - xresolution) >= 1e-5) ||
(ABS (image->yresolution - yresolution) >= 1e-5))
{
gimp_image_undo_push_image_resolution (image,
_("Change Image Resolution"));
image->xresolution = xresolution;
image->yresolution = yresolution;
gimp_image_resolution_changed (image);
gimp_viewable_size_changed (GIMP_VIEWABLE (image));
}
}
void
gimp_image_get_resolution (const GimpImage *image,
gdouble *xresolution,
gdouble *yresolution)
{
g_return_if_fail (GIMP_IS_IMAGE (image));
g_return_if_fail (xresolution && yresolution);
*xresolution = image->xresolution;
*yresolution = image->yresolution;
}
void
gimp_image_resolution_changed (GimpImage *image)
{
g_return_if_fail (GIMP_IS_IMAGE (image));
g_signal_emit (image, gimp_image_signals[RESOLUTION_CHANGED], 0);
}
void
gimp_image_set_unit (GimpImage *image,
GimpUnit unit)
{
g_return_if_fail (GIMP_IS_IMAGE (image));
g_return_if_fail (unit > GIMP_UNIT_PIXEL);
if (image->resolution_unit != unit)
{
gimp_image_undo_push_image_resolution (image,
_("Change Image Unit"));
image->resolution_unit = unit;
gimp_image_unit_changed (image);
}
}
GimpUnit
gimp_image_get_unit (const GimpImage *image)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), GIMP_UNIT_INCH);
return image->resolution_unit;
}
void
gimp_image_unit_changed (GimpImage *image)
{
g_return_if_fail (GIMP_IS_IMAGE (image));
g_signal_emit (image, gimp_image_signals[UNIT_CHANGED], 0);
}
gint
gimp_image_get_width (const GimpImage *image)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), 0);
return image->width;
}
gint
gimp_image_get_height (const GimpImage *image)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), 0);
return image->height;
}
gboolean
gimp_image_has_alpha (const GimpImage *image)
{
GimpLayer *layer;
g_return_val_if_fail (GIMP_IS_IMAGE (image), TRUE);
layer = (GimpLayer *) gimp_container_get_child_by_index (image->layers, 0);
return ((gimp_container_num_children (image->layers) > 1) ||
(layer && gimp_drawable_has_alpha (GIMP_DRAWABLE (layer))));
}
gboolean
gimp_image_is_empty (const GimpImage *image)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), TRUE);
return gimp_container_is_empty (image->layers);
}
GimpLayer *
gimp_image_floating_sel (const GimpImage *image)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
return image->floating_sel;
}
void
gimp_image_floating_selection_changed (GimpImage *image)
{
g_return_if_fail (GIMP_IS_IMAGE (image));
g_signal_emit (image, gimp_image_signals[FLOATING_SELECTION_CHANGED], 0);
}
GimpChannel *
gimp_image_get_mask (const GimpImage *image)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
return image->selection_mask;
}
void
gimp_image_mask_changed (GimpImage *image)
{
g_return_if_fail (GIMP_IS_IMAGE (image));
g_signal_emit (image, gimp_image_signals[MASK_CHANGED], 0);
}
gint
gimp_image_get_component_index (const GimpImage *image,
GimpChannelType channel)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), -1);
switch (channel)
{
case GIMP_RED_CHANNEL: return RED_PIX;
case GIMP_GREEN_CHANNEL: return GREEN_PIX;
case GIMP_BLUE_CHANNEL: return BLUE_PIX;
case GIMP_GRAY_CHANNEL: return GRAY_PIX;
case GIMP_INDEXED_CHANNEL: return INDEXED_PIX;
case GIMP_ALPHA_CHANNEL:
switch (gimp_image_base_type (image))
{
case GIMP_RGB: return ALPHA_PIX;
case GIMP_GRAY: return ALPHA_G_PIX;
case GIMP_INDEXED: return ALPHA_I_PIX;
}
}
return -1;
}
void
gimp_image_set_component_active (GimpImage *image,
GimpChannelType channel,
gboolean active)
{
gint index = -1;
g_return_if_fail (GIMP_IS_IMAGE (image));
index = gimp_image_get_component_index (image, channel);
if (index != -1 && active != image->active[index])
{
GimpLayer *floating_sel = gimp_image_floating_sel (image);
if (floating_sel)
floating_sel_relax (floating_sel, FALSE);
image->active[index] = active ? TRUE : FALSE;
if (floating_sel)
{
floating_sel_rigor (floating_sel, FALSE);
gimp_drawable_update (GIMP_DRAWABLE (floating_sel),
0, 0,
GIMP_ITEM (floating_sel)->width,
GIMP_ITEM (floating_sel)->height);
}
/* If there is an active channel and we mess with the components,
* the active channel gets unset...
*/
gimp_image_unset_active_channel (image);
g_signal_emit (image,
gimp_image_signals[COMPONENT_ACTIVE_CHANGED], 0,
channel);
}
}
gboolean
gimp_image_get_component_active (const GimpImage *image,
GimpChannelType channel)
{
gint index = -1;
g_return_val_if_fail (GIMP_IS_IMAGE (image), FALSE);
index = gimp_image_get_component_index (image, channel);
if (index != -1)
return image->active[index];
return FALSE;
}
void
gimp_image_set_component_visible (GimpImage *image,
GimpChannelType channel,
gboolean visible)
{
gint index = -1;
g_return_if_fail (GIMP_IS_IMAGE (image));
index = gimp_image_get_component_index (image, channel);
if (index != -1 && visible != image->visible[index])
{
image->visible[index] = visible ? TRUE : FALSE;
g_signal_emit (image,
gimp_image_signals[COMPONENT_VISIBILITY_CHANGED], 0,
channel);
gimp_image_update (image, 0, 0, image->width, image->height);
gimp_viewable_invalidate_preview (GIMP_VIEWABLE (image));
}
}
gboolean
gimp_image_get_component_visible (const GimpImage *image,
GimpChannelType channel)
{
gint index = -1;
g_return_val_if_fail (GIMP_IS_IMAGE (image), FALSE);
index = gimp_image_get_component_index (image, channel);
if (index != -1)
return image->visible[index];
return FALSE;
}
void
gimp_image_mode_changed (GimpImage *image)
{
g_return_if_fail (GIMP_IS_IMAGE (image));
g_signal_emit (image, gimp_image_signals[MODE_CHANGED], 0);
}
void
gimp_image_alpha_changed (GimpImage *image)
{
g_return_if_fail (GIMP_IS_IMAGE (image));
g_signal_emit (image, gimp_image_signals[ALPHA_CHANGED], 0);
}
void
gimp_image_update (GimpImage *image,
gint x,
gint y,
gint width,
gint height)
{
g_return_if_fail (GIMP_IS_IMAGE (image));
g_signal_emit (image, gimp_image_signals[UPDATE], 0,
x, y, width, height);
}
void
gimp_image_update_guide (GimpImage *image,
GimpGuide *guide)
{
g_return_if_fail (GIMP_IS_IMAGE (image));
g_return_if_fail (guide != NULL);
g_signal_emit (image, gimp_image_signals[UPDATE_GUIDE], 0, guide);
}
void
gimp_image_update_sample_point (GimpImage *image,
GimpSamplePoint *sample_point)
{
g_return_if_fail (GIMP_IS_IMAGE (image));
g_return_if_fail (sample_point != NULL);
g_signal_emit (image, gimp_image_signals[UPDATE_SAMPLE_POINT], 0,
sample_point);
}
void
gimp_image_sample_point_added (GimpImage *image,
GimpSamplePoint *sample_point)
{
g_return_if_fail (GIMP_IS_IMAGE (image));
g_return_if_fail (sample_point != NULL);
g_signal_emit (image, gimp_image_signals[SAMPLE_POINT_ADDED], 0,
sample_point);
}
void
gimp_image_sample_point_removed (GimpImage *image,
GimpSamplePoint *sample_point)
{
g_return_if_fail (GIMP_IS_IMAGE (image));
g_return_if_fail (sample_point != NULL);
g_signal_emit (image, gimp_image_signals[SAMPLE_POINT_REMOVED], 0,
sample_point);
}
void
gimp_image_colormap_changed (GimpImage *image,
gint color_index)
{
g_return_if_fail (GIMP_IS_IMAGE (image));
g_return_if_fail (color_index >= -1 && color_index < image->num_cols);
g_signal_emit (image, gimp_image_signals[COLORMAP_CHANGED], 0,
color_index);
}
void
gimp_image_selection_control (GimpImage *image,
GimpSelectionControl control)
{
g_return_if_fail (GIMP_IS_IMAGE (image));
g_signal_emit (image, gimp_image_signals[SELECTION_CONTROL], 0, control);
}
void
gimp_image_quick_mask_changed (GimpImage *image)
{
g_return_if_fail (GIMP_IS_IMAGE (image));
g_signal_emit (image, gimp_image_signals[QUICK_MASK_CHANGED], 0);
}
/* undo */
gboolean
gimp_image_undo_is_enabled (const GimpImage *image)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), FALSE);
return (image->undo_freeze_count == 0);
}
gboolean
gimp_image_undo_enable (GimpImage *image)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), FALSE);
/* Free all undo steps as they are now invalidated */
gimp_image_undo_free (image);
return gimp_image_undo_thaw (image);
}
gboolean
gimp_image_undo_disable (GimpImage *image)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), FALSE);
return gimp_image_undo_freeze (image);
}
gboolean
gimp_image_undo_freeze (GimpImage *image)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), FALSE);
image->undo_freeze_count++;
if (image->undo_freeze_count == 1)
gimp_image_undo_event (image, GIMP_UNDO_EVENT_UNDO_FREEZE, NULL);
return TRUE;
}
gboolean
gimp_image_undo_thaw (GimpImage *image)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), FALSE);
g_return_val_if_fail (image->undo_freeze_count > 0, FALSE);
image->undo_freeze_count--;
if (image->undo_freeze_count == 0)
gimp_image_undo_event (image, GIMP_UNDO_EVENT_UNDO_THAW, NULL);
return TRUE;
}
void
gimp_image_undo_event (GimpImage *image,
GimpUndoEvent event,
GimpUndo *undo)
{
g_return_if_fail (GIMP_IS_IMAGE (image));
g_return_if_fail (((event == GIMP_UNDO_EVENT_UNDO_FREE ||
event == GIMP_UNDO_EVENT_UNDO_FREEZE ||
event == GIMP_UNDO_EVENT_UNDO_THAW) && undo == NULL) ||
GIMP_IS_UNDO (undo));
g_signal_emit (image, gimp_image_signals[UNDO_EVENT], 0, event, undo);
}
/* NOTE about the image->dirty counter:
* If 0, then the image is clean (ie, copy on disk is the same as the one
* in memory).
* If positive, then that's the number of dirtying operations done
* on the image since the last save.
* If negative, then user has hit undo and gone back in time prior
* to the saved copy. Hitting redo will eventually come back to
* the saved copy.
*
* The image is dirty (ie, needs saving) if counter is non-zero.
*
* If the counter is around 10000, this is due to undo-ing back
* before a saved version, then mutating the image (thus destroying
* the redo stack). Once this has happened, it's impossible to get
* the image back to the state on disk, since the redo info has been
* freed. See undo.c for the gorey details.
*/
/*
* NEVER CALL gimp_image_dirty() directly!
*
* If your code has just dirtied the image, push an undo instead.
* Failing that, push the trivial undo which tells the user the
* command is not undoable: undo_push_cantundo() (But really, it would
* be best to push a proper undo). If you just dirty the image
* without pushing an undo then the dirty count is increased, but
* popping that many undo actions won't lead to a clean image.
*/
gint
gimp_image_dirty (GimpImage *image,
GimpDirtyMask dirty_mask)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), FALSE);
image->dirty++;
if (! image->dirty_time)
image->dirty_time = time (NULL);
g_signal_emit (image, gimp_image_signals[DIRTY], 0, dirty_mask);
TRC (("dirty %d -> %d\n", image->dirty - 1, image->dirty));
return image->dirty;
}
gint
gimp_image_clean (GimpImage *image,
GimpDirtyMask dirty_mask)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), FALSE);
image->dirty--;
g_signal_emit (image, gimp_image_signals[CLEAN], 0, dirty_mask);
TRC (("clean %d -> %d\n", image->dirty + 1, image->dirty));
return image->dirty;
}
void
gimp_image_clean_all (GimpImage *image)
{
g_return_if_fail (GIMP_IS_IMAGE (image));
image->dirty = 0;
image->dirty_time = 0;
g_signal_emit (image, gimp_image_signals[CLEAN], 0);
}
/**
* gimp_image_saved:
* @image:
* @uri:
*
* Emits the "saved" signal, indicating that @image was saved to the
* location specified by @uri.
*/
void
gimp_image_saved (GimpImage *image,
const gchar *uri)
{
g_return_if_fail (GIMP_IS_IMAGE (image));
g_return_if_fail (uri != NULL);
g_signal_emit (image, gimp_image_signals[SAVED], 0, uri);
}
/* flush this image's displays */
void
gimp_image_flush (GimpImage *image)
{
g_return_if_fail (GIMP_IS_IMAGE (image));
g_signal_emit (image, gimp_image_signals[FLUSH], 0);
}
/* color transforms / utilities */
void
gimp_image_get_foreground (const GimpImage *image,
GimpContext *context,
GimpImageType dest_type,
guchar *fg)
{
GimpRGB color;
guchar pfg[3];
g_return_if_fail (GIMP_IS_IMAGE (image));
g_return_if_fail (GIMP_IS_CONTEXT (context));
g_return_if_fail (fg != NULL);
gimp_context_get_foreground (context, &color);
gimp_rgb_get_uchar (&color, &pfg[0], &pfg[1], &pfg[2]);
gimp_image_transform_color (image, dest_type, fg, GIMP_RGB, pfg);
}
void
gimp_image_get_background (const GimpImage *image,
GimpContext *context,
GimpImageType dest_type,
guchar *bg)
{
GimpRGB color;
guchar pbg[3];
g_return_if_fail (GIMP_IS_IMAGE (image));
g_return_if_fail (GIMP_IS_CONTEXT (context));
g_return_if_fail (bg != NULL);
gimp_context_get_background (context, &color);
gimp_rgb_get_uchar (&color, &pbg[0], &pbg[1], &pbg[2]);
gimp_image_transform_color (image, dest_type, bg, GIMP_RGB, pbg);
}
void
gimp_image_get_color (const GimpImage *src_image,
GimpImageType src_type,
const guchar *src,
guchar *rgba)
{
gboolean has_alpha = FALSE;
g_return_if_fail (GIMP_IS_IMAGE (src_image));
switch (src_type)
{
case GIMP_RGBA_IMAGE:
has_alpha = TRUE;
case GIMP_RGB_IMAGE:
/* Straight copy */
*rgba++ = *src++;
*rgba++ = *src++;
*rgba++ = *src++;
break;
case GIMP_GRAYA_IMAGE:
has_alpha = TRUE;
case GIMP_GRAY_IMAGE:
/* Gray to RG&B */
*rgba++ = *src;
*rgba++ = *src;
*rgba++ = *src++;
break;
case GIMP_INDEXEDA_IMAGE:
has_alpha = TRUE;
case GIMP_INDEXED_IMAGE:
/* Indexed palette lookup */
{
gint index = *src++ * 3;
*rgba++ = src_image->cmap[index++];
*rgba++ = src_image->cmap[index++];
*rgba++ = src_image->cmap[index++];
}
break;
}
if (has_alpha)
*rgba = *src;
else
*rgba = OPAQUE_OPACITY;
}
void
gimp_image_transform_rgb (const GimpImage *dest_image,
GimpImageType dest_type,
const GimpRGB *rgb,
guchar *color)
{
guchar col[3];
g_return_if_fail (GIMP_IS_IMAGE (dest_image));
g_return_if_fail (rgb != NULL);
g_return_if_fail (color != NULL);
gimp_rgb_get_uchar (rgb, &col[0], &col[1], &col[2]);
gimp_image_transform_color (dest_image, dest_type, color, GIMP_RGB, col);
}
void
gimp_image_transform_color (const GimpImage *dest_image,
GimpImageType dest_type,
guchar *dest,
GimpImageBaseType src_type,
const guchar *src)
{
g_return_if_fail (GIMP_IS_IMAGE (dest_image));
g_return_if_fail (src_type != GIMP_INDEXED);
switch (src_type)
{
case GIMP_RGB:
switch (dest_type)
{
case GIMP_RGB_IMAGE:
case GIMP_RGBA_IMAGE:
/* Straight copy */
*dest++ = *src++;
*dest++ = *src++;
*dest++ = *src++;
break;
case GIMP_GRAY_IMAGE:
case GIMP_GRAYA_IMAGE:
/* NTSC conversion */
*dest = GIMP_RGB_LUMINANCE (src[RED_PIX],
src[GREEN_PIX],
src[BLUE_PIX]) + 0.5;
break;
case GIMP_INDEXED_IMAGE:
case GIMP_INDEXEDA_IMAGE:
/* Least squares method */
*dest = gimp_image_color_hash_rgb_to_indexed (dest_image,
src[RED_PIX],
src[GREEN_PIX],
src[BLUE_PIX]);
break;
}
break;
case GIMP_GRAY:
switch (dest_type)
{
case GIMP_RGB_IMAGE:
case GIMP_RGBA_IMAGE:
/* Gray to RG&B */
*dest++ = *src;
*dest++ = *src;
*dest++ = *src;
break;
case GIMP_GRAY_IMAGE:
case GIMP_GRAYA_IMAGE:
/* Straight copy */
*dest = *src;
break;
case GIMP_INDEXED_IMAGE:
case GIMP_INDEXEDA_IMAGE:
/* Least squares method */
*dest = gimp_image_color_hash_rgb_to_indexed (dest_image,
src[GRAY_PIX],
src[GRAY_PIX],
src[GRAY_PIX]);
break;
}
break;
default:
break;
}
}
TempBuf *
gimp_image_transform_temp_buf (const GimpImage *dest_image,
GimpImageType dest_type,
TempBuf *temp_buf,
gboolean *new_buf)
{
TempBuf *ret_buf;
GimpImageType ret_buf_type;
gboolean has_alpha;
gboolean is_rgb;
gint in_bytes;
gint out_bytes;
g_return_val_if_fail (GIMP_IMAGE (dest_image), NULL);
g_return_val_if_fail (temp_buf != NULL, NULL);
g_return_val_if_fail (new_buf != NULL, NULL);
in_bytes = temp_buf->bytes;
has_alpha = (in_bytes == 2 || in_bytes == 4);
is_rgb = (in_bytes == 3 || in_bytes == 4);
if (has_alpha)
ret_buf_type = GIMP_IMAGE_TYPE_WITH_ALPHA (dest_type);
else
ret_buf_type = GIMP_IMAGE_TYPE_WITHOUT_ALPHA (dest_type);
out_bytes = GIMP_IMAGE_TYPE_BYTES (ret_buf_type);
/* If the pattern doesn't match the image in terms of color type,
* transform it. (ie pattern is RGB, image is indexed)
*/
if (in_bytes != out_bytes || GIMP_IMAGE_TYPE_IS_INDEXED (dest_type))
{
guchar *src;
guchar *dest;
gint size;
ret_buf = temp_buf_new (temp_buf->width, temp_buf->height,
out_bytes, 0, 0, NULL);
src = temp_buf_data (temp_buf);
dest = temp_buf_data (ret_buf);
size = temp_buf->width * temp_buf->height;
while (size--)
{
gimp_image_transform_color (dest_image, dest_type, dest,
is_rgb ? GIMP_RGB : GIMP_GRAY, src);
/* Handle alpha */
if (has_alpha)
dest[out_bytes - 1] = src[in_bytes - 1];
src += in_bytes;
dest += out_bytes;
}
*new_buf = TRUE;
}
else
{
ret_buf = temp_buf;
*new_buf = FALSE;
}
return ret_buf;
}
/* shadow tiles */
TileManager *
gimp_image_get_shadow_tiles (GimpImage *image,
gint width,
gint height,
gint bpp)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
if (image->shadow)
{
if ((width != tile_manager_width (image->shadow)) ||
(height != tile_manager_height (image->shadow)) ||
(bpp != tile_manager_bpp (image->shadow)))
{
gimp_image_free_shadow_tiles (image);
}
else
{
return image->shadow;
}
}
image->shadow = tile_manager_new (width, height, bpp);
return image->shadow;
}
void
gimp_image_free_shadow_tiles (GimpImage *image)
{
g_return_if_fail (GIMP_IS_IMAGE (image));
if (image->shadow)
{
tile_manager_unref (image->shadow);
image->shadow = NULL;
}
}
/* parasites */
const GimpParasite *
gimp_image_parasite_find (const GimpImage *image,
const gchar *name)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
return gimp_parasite_list_find (image->parasites, name);
}
static void
list_func (gchar *key,
GimpParasite *p,
gchar ***cur)
{
*(*cur)++ = (gchar *) g_strdup (key);
}
gchar **
gimp_image_parasite_list (const GimpImage *image,
gint *count)
{
gchar **list;
gchar **cur;
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
*count = gimp_parasite_list_length (image->parasites);
cur = list = g_new (gchar*, *count);
gimp_parasite_list_foreach (image->parasites, (GHFunc) list_func, &cur);
return list;
}
void
gimp_image_parasite_attach (GimpImage *image,
const GimpParasite *parasite)
{
GimpParasite *copy;
g_return_if_fail (GIMP_IS_IMAGE (image));
g_return_if_fail (parasite != NULL);
/* make a temp copy of the struct because
* gimp_parasite_shift_parent() changes it
*/
copy = g_memdup (parasite, sizeof (GimpParasite));
/* only set the dirty bit manually if we can be saved and the new
parasite differs from the current one and we aren't undoable */
if (gimp_parasite_is_undoable (copy))
gimp_image_undo_push_image_parasite (image,
_("Attach Parasite to Image"),
copy);
/* We used to push an cantundo on te stack here. This made the undo stack
unusable (NULL on the stack) and prevented people from undoing after a
save (since most save plug-ins attach an undoable comment parasite).
Now we simply attach the parasite without pushing an undo. That way it's
undoable but does not block the undo system. --Sven
*/
gimp_parasite_list_add (image->parasites, copy);
if (gimp_parasite_has_flag (copy, GIMP_PARASITE_ATTACH_PARENT))
{
gimp_parasite_shift_parent (copy);
gimp_parasite_attach (image->gimp, copy);
}
g_free (copy);
g_signal_emit (image, gimp_image_signals[PARASITE_ATTACHED], 0,
parasite->name);
}
void
gimp_image_parasite_detach (GimpImage *image,
const gchar *name)
{
const GimpParasite *parasite;
g_return_if_fail (GIMP_IS_IMAGE (image));
g_return_if_fail (name != NULL);
if (! (parasite = gimp_parasite_list_find (image->parasites, name)))
return;
if (gimp_parasite_is_undoable (parasite))
gimp_image_undo_push_image_parasite_remove (image,
_("Remove Parasite from Image"),
name);
gimp_parasite_list_remove (image->parasites, name);
g_signal_emit (image, gimp_image_signals[PARASITE_DETACHED], 0,
name);
}
/* tattoos */
GimpTattoo
gimp_image_get_new_tattoo (GimpImage *image)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), 0);
image->tattoo_state++;
if (G_UNLIKELY (image->tattoo_state == 0))
g_warning ("%s: Tattoo state corrupted (integer overflow).", G_STRFUNC);
return image->tattoo_state;
}
GimpTattoo
gimp_image_get_tattoo_state (GimpImage *image)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), 0);
return image->tattoo_state;
}
gboolean
gimp_image_set_tattoo_state (GimpImage *image,
GimpTattoo val)
{
GList *list;
gboolean retval = TRUE;
GimpTattoo maxval = 0;
g_return_val_if_fail (GIMP_IS_IMAGE (image), FALSE);
/* Check that the layer tattoos don't overlap with channel or vector ones */
for (list = GIMP_LIST (image->layers)->list;
list;
list = g_list_next (list))
{
GimpTattoo ltattoo;
ltattoo = gimp_item_get_tattoo (GIMP_ITEM (list->data));
if (ltattoo > maxval)
maxval = ltattoo;
if (gimp_image_get_channel_by_tattoo (image, ltattoo))
retval = FALSE; /* Oopps duplicated tattoo in channel */
if (gimp_image_get_vectors_by_tattoo (image, ltattoo))
retval = FALSE; /* Oopps duplicated tattoo in vectors */
}
/* Now check that the channel and vectors tattoos don't overlap */
for (list = GIMP_LIST (image->channels)->list;
list;
list = g_list_next (list))
{
GimpTattoo ctattoo;
ctattoo = gimp_item_get_tattoo (GIMP_ITEM (list->data));
if (ctattoo > maxval)
maxval = ctattoo;
if (gimp_image_get_vectors_by_tattoo (image, ctattoo))
retval = FALSE; /* Oopps duplicated tattoo in vectors */
}
/* Find the max tattoo value in the vectors */
for (list = GIMP_LIST (image->vectors)->list;
list;
list = g_list_next (list))
{
GimpTattoo vtattoo;
vtattoo = gimp_item_get_tattoo (GIMP_ITEM (list->data));
if (vtattoo > maxval)
maxval = vtattoo;
}
if (val < maxval)
retval = FALSE;
/* Must check if the state is valid */
if (retval == TRUE)
image->tattoo_state = val;
return retval;
}
/* layers / channels / vectors */
GimpContainer *
gimp_image_get_layers (const GimpImage *image)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
return image->layers;
}
GimpContainer *
gimp_image_get_channels (const GimpImage *image)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
return image->channels;
}
GimpContainer *
gimp_image_get_vectors (const GimpImage *image)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
return image->vectors;
}
GimpDrawable *
gimp_image_active_drawable (const GimpImage *image)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
/* If there is an active channel (a saved selection, etc.),
* we ignore the active layer
*/
if (image->active_channel)
{
return GIMP_DRAWABLE (image->active_channel);
}
else if (image->active_layer)
{
GimpLayer *layer = image->active_layer;
if (layer->mask && layer->mask->edit_mask)
return GIMP_DRAWABLE (layer->mask);
else
return GIMP_DRAWABLE (layer);
}
return NULL;
}
GimpLayer *
gimp_image_get_active_layer (const GimpImage *image)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
return image->active_layer;
}
GimpChannel *
gimp_image_get_active_channel (const GimpImage *image)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
return image->active_channel;
}
GimpVectors *
gimp_image_get_active_vectors (const GimpImage *image)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
return image->active_vectors;
}
GimpLayer *
gimp_image_set_active_layer (GimpImage *image,
GimpLayer *layer)
{
GimpLayer *floating_sel;
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
g_return_val_if_fail (layer == NULL || GIMP_IS_LAYER (layer), NULL);
g_return_val_if_fail (layer == NULL ||
gimp_container_have (image->layers,
GIMP_OBJECT (layer)), NULL);
floating_sel = gimp_image_floating_sel (image);
/* Make sure the floating_sel always is the active layer */
if (floating_sel && layer != floating_sel)
return floating_sel;
if (layer != image->active_layer)
{
if (layer)
{
/* Configure the layer stack to reflect this change */
image->layer_stack = g_slist_remove (image->layer_stack, layer);
image->layer_stack = g_slist_prepend (image->layer_stack, layer);
}
/* Don't cache selection info for the previous active layer */
if (image->active_layer)
gimp_drawable_invalidate_boundary (GIMP_DRAWABLE (image->active_layer));
image->active_layer = layer;
g_signal_emit (image, gimp_image_signals[ACTIVE_LAYER_CHANGED], 0);
if (layer && image->active_channel)
gimp_image_set_active_channel (image, NULL);
}
return image->active_layer;
}
GimpChannel *
gimp_image_set_active_channel (GimpImage *image,
GimpChannel *channel)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
g_return_val_if_fail (channel == NULL || GIMP_IS_CHANNEL (channel), NULL);
g_return_val_if_fail (channel == NULL ||
gimp_container_have (image->channels,
GIMP_OBJECT (channel)), NULL);
/* Not if there is a floating selection */
if (channel && gimp_image_floating_sel (image))
return NULL;
if (channel != image->active_channel)
{
image->active_channel = channel;
g_signal_emit (image, gimp_image_signals[ACTIVE_CHANNEL_CHANGED], 0);
if (channel && image->active_layer)
gimp_image_set_active_layer (image, NULL);
}
return image->active_channel;
}
GimpChannel *
gimp_image_unset_active_channel (GimpImage *image)
{
GimpChannel *channel;
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
channel = gimp_image_get_active_channel (image);
if (channel)
{
gimp_image_set_active_channel (image, NULL);
if (image->layer_stack)
gimp_image_set_active_layer (image, image->layer_stack->data);
}
return channel;
}
GimpVectors *
gimp_image_set_active_vectors (GimpImage *image,
GimpVectors *vectors)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
g_return_val_if_fail (vectors == NULL || GIMP_IS_VECTORS (vectors), NULL);
g_return_val_if_fail (vectors == NULL ||
gimp_container_have (image->vectors,
GIMP_OBJECT (vectors)), NULL);
if (vectors != image->active_vectors)
{
image->active_vectors = vectors;
g_signal_emit (image, gimp_image_signals[ACTIVE_VECTORS_CHANGED], 0);
}
return image->active_vectors;
}
void
gimp_image_active_layer_changed (GimpImage *image)
{
g_return_if_fail (GIMP_IS_IMAGE (image));
g_signal_emit (image, gimp_image_signals[ACTIVE_LAYER_CHANGED], 0);
}
void
gimp_image_active_channel_changed (GimpImage *image)
{
g_return_if_fail (GIMP_IS_IMAGE (image));
g_signal_emit (image, gimp_image_signals[ACTIVE_CHANNEL_CHANGED], 0);
}
void
gimp_image_active_vectors_changed (GimpImage *image)
{
g_return_if_fail (GIMP_IS_IMAGE (image));
g_signal_emit (image, gimp_image_signals[ACTIVE_VECTORS_CHANGED], 0);
}
gint
gimp_image_get_layer_index (const GimpImage *image,
const GimpLayer *layer)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), -1);
g_return_val_if_fail (GIMP_IS_LAYER (layer), -1);
return gimp_container_get_child_index (image->layers,
GIMP_OBJECT (layer));
}
gint
gimp_image_get_channel_index (const GimpImage *image,
const GimpChannel *channel)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), -1);
g_return_val_if_fail (GIMP_IS_CHANNEL (channel), -1);
return gimp_container_get_child_index (image->channels,
GIMP_OBJECT (channel));
}
gint
gimp_image_get_vectors_index (const GimpImage *image,
const GimpVectors *vectors)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), -1);
g_return_val_if_fail (GIMP_IS_VECTORS (vectors), -1);
return gimp_container_get_child_index (image->vectors,
GIMP_OBJECT (vectors));
}
static GimpItem *
gimp_image_get_item_by_tattoo (GimpContainer *items,
GimpTattoo tattoo)
{
GList *list;
for (list = GIMP_LIST (items)->list; list; list = g_list_next (list))
{
GimpItem *item = list->data;
if (gimp_item_get_tattoo (item) == tattoo)
return item;
}
return NULL;
}
GimpLayer *
gimp_image_get_layer_by_tattoo (const GimpImage *image,
GimpTattoo tattoo)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
return GIMP_LAYER (gimp_image_get_item_by_tattoo (image->layers,
tattoo));
}
GimpChannel *
gimp_image_get_channel_by_tattoo (const GimpImage *image,
GimpTattoo tattoo)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
return GIMP_CHANNEL (gimp_image_get_item_by_tattoo (image->channels,
tattoo));
}
GimpVectors *
gimp_image_get_vectors_by_tattoo (const GimpImage *image,
GimpTattoo tattoo)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
return GIMP_VECTORS (gimp_image_get_item_by_tattoo (image->vectors,
tattoo));
}
GimpLayer *
gimp_image_get_layer_by_name (const GimpImage *image,
const gchar *name)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
return GIMP_LAYER (gimp_container_get_child_by_name (image->layers,
name));
}
GimpChannel *
gimp_image_get_channel_by_name (const GimpImage *image,
const gchar *name)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
return GIMP_CHANNEL (gimp_container_get_child_by_name (image->channels,
name));
}
GimpVectors *
gimp_image_get_vectors_by_name (const GimpImage *image,
const gchar *name)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
return GIMP_VECTORS (gimp_container_get_child_by_name (image->vectors,
name));
}
gboolean
gimp_image_add_layer (GimpImage *image,
GimpLayer *layer,
gint position)
{
GimpLayer *active_layer;
GimpLayer *floating_sel;
gboolean old_has_alpha;
g_return_val_if_fail (GIMP_IS_IMAGE (image), FALSE);
g_return_val_if_fail (GIMP_IS_LAYER (layer), FALSE);
if (GIMP_ITEM (layer)->image != NULL &&
GIMP_ITEM (layer)->image != image)
{
g_warning ("%s: attempting to add layer to wrong image.", G_STRFUNC);
return FALSE;
}
if (gimp_container_have (image->layers, GIMP_OBJECT (layer)))
{
g_warning ("%s: trying to add layer to image twice.", G_STRFUNC);
return FALSE;
}
floating_sel = gimp_image_floating_sel (image);
if (floating_sel && gimp_layer_is_floating_sel (layer))
{
g_warning ("%s: trying to add floating layer to image which alyready "
"has a floating selection.", G_STRFUNC);
return FALSE;
}
active_layer = gimp_image_get_active_layer (image);
old_has_alpha = gimp_image_has_alpha (image);
gimp_image_undo_push_layer_add (image, _("Add Layer"),
layer, active_layer);
gimp_item_set_image (GIMP_ITEM (layer), image);
if (layer->mask)
gimp_item_set_image (GIMP_ITEM (layer->mask), image);
/* If the layer is a floating selection, set the ID */
if (gimp_layer_is_floating_sel (layer))
image->floating_sel = layer;
/* add the layer to the list at the specified position */
if (position == -1)
{
if (active_layer)
position = gimp_container_get_child_index (image->layers,
GIMP_OBJECT (active_layer));
else
position = 0;
}
/* If there is a floating selection (and this isn't it!),
* make sure the insert position is greater than 0
*/
if (position == 0 && floating_sel)
position = 1;
/* Don't add at a non-existing index */
if (position > gimp_container_num_children (image->layers))
position = gimp_container_num_children (image->layers);
g_object_ref_sink (layer);
gimp_container_insert (image->layers, GIMP_OBJECT (layer), position);
g_object_unref (layer);
/* notify the layers dialog of the currently active layer */
gimp_image_set_active_layer (image, layer);
if (old_has_alpha != gimp_image_has_alpha (image))
gimp_image_alpha_changed (image);
if (gimp_layer_is_floating_sel (layer))
gimp_image_floating_selection_changed (image);
return TRUE;
}
void
gimp_image_remove_layer (GimpImage *image,
GimpLayer *layer)
{
GimpLayer *active_layer;
gint index;
gboolean old_has_alpha;
gboolean undo_group = FALSE;
g_return_if_fail (GIMP_IS_IMAGE (image));
g_return_if_fail (GIMP_IS_LAYER (layer));
g_return_if_fail (gimp_container_have (image->layers,
GIMP_OBJECT (layer)));
if (gimp_drawable_has_floating_sel (GIMP_DRAWABLE (layer)))
{
gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_IMAGE_ITEM_REMOVE,
_("Remove Layer"));
undo_group = TRUE;
floating_sel_remove (gimp_image_floating_sel (image));
}
active_layer = gimp_image_get_active_layer (image);
index = gimp_container_get_child_index (image->layers,
GIMP_OBJECT (layer));
old_has_alpha = gimp_image_has_alpha (image);
gimp_image_undo_push_layer_remove (image, _("Remove Layer"),
layer, index, active_layer);
g_object_ref (layer);
/* Make sure we're not caching any old selection info */
if (layer == active_layer)
gimp_drawable_invalidate_boundary (GIMP_DRAWABLE (layer));
gimp_container_remove (image->layers, GIMP_OBJECT (layer));
image->layer_stack = g_slist_remove (image->layer_stack, layer);
if (image->floating_sel == layer)
{
/* If this was the floating selection, reset the fs pointer
* and activate the underlying drawable
*/
image->floating_sel = NULL;
floating_sel_activate_drawable (layer);
gimp_image_floating_selection_changed (image);
}
else if (layer == active_layer)
{
if (image->layer_stack)
{
active_layer = image->layer_stack->data;
}
else
{
gint n_children = gimp_container_num_children (image->layers);
if (n_children > 0)
{
index = CLAMP (index, 0, n_children - 1);
active_layer = (GimpLayer *)
gimp_container_get_child_by_index (image->layers, index);
}
else
{
active_layer = NULL;
}
}
gimp_image_set_active_layer (image, active_layer);
}
gimp_item_removed (GIMP_ITEM (layer));
g_object_unref (layer);
if (old_has_alpha != gimp_image_has_alpha (image))
gimp_image_alpha_changed (image);
if (undo_group)
gimp_image_undo_group_end (image);
}
void
gimp_image_add_layers (GimpImage *image,
GList *layers,
gint position,
gint x,
gint y,
gint width,
gint height,
const gchar *undo_desc)
{
GList *list;
gint layers_x = G_MAXINT;
gint layers_y = G_MAXINT;
gint layers_width = 0;
gint layers_height = 0;
gint offset_x;
gint offset_y;
g_return_if_fail (GIMP_IS_IMAGE (image));
g_return_if_fail (layers != NULL);
if (position == -1)
{
GimpLayer *active_layer = gimp_image_get_active_layer (image);
if (active_layer)
position = gimp_image_get_layer_index (image, active_layer);
else
position = 0;
}
for (list = layers; list; list = g_list_next (list))
{
GimpItem *item = GIMP_ITEM (list->data);
gint off_x, off_y;
gimp_item_offsets (item, &off_x, &off_y);
layers_x = MIN (layers_x, off_x);
layers_y = MIN (layers_y, off_y);
layers_width = MAX (layers_width,
off_x + gimp_item_width (item) - layers_x);
layers_height = MAX (layers_height,
off_y + gimp_item_height (item) - layers_y);
}
offset_x = x + (width - layers_width) / 2 - layers_x;
offset_y = y + (height - layers_height) / 2 - layers_y;
gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_LAYER_ADD, undo_desc);
for (list = layers; list; list = g_list_next (list))
{
GimpItem *new_item = GIMP_ITEM (list->data);
gimp_item_translate (new_item, offset_x, offset_y, FALSE);
gimp_image_add_layer (image, GIMP_LAYER (new_item), position);
position++;
}
gimp_image_undo_group_end (image);
}
gboolean
gimp_image_raise_layer (GimpImage *image,
GimpLayer *layer)
{
gint index;
g_return_val_if_fail (GIMP_IS_IMAGE (image), FALSE);
g_return_val_if_fail (GIMP_IS_LAYER (layer), FALSE);
index = gimp_container_get_child_index (image->layers,
GIMP_OBJECT (layer));
if (index == 0)
{
g_message (_("Layer cannot be raised higher."));
return FALSE;
}
return gimp_image_position_layer (image, layer, index - 1,
TRUE, _("Raise Layer"));
}
gboolean
gimp_image_lower_layer (GimpImage *image,
GimpLayer *layer)
{
gint index;
g_return_val_if_fail (GIMP_IS_IMAGE (image), FALSE);
g_return_val_if_fail (GIMP_IS_LAYER (layer), FALSE);
index = gimp_container_get_child_index (image->layers,
GIMP_OBJECT (layer));
if (index == gimp_container_num_children (image->layers) - 1)
{
g_message (_("Layer cannot be lowered more."));
return FALSE;
}
return gimp_image_position_layer (image, layer, index + 1,
TRUE, _("Lower Layer"));
}
gboolean
gimp_image_raise_layer_to_top (GimpImage *image,
GimpLayer *layer)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), FALSE);
g_return_val_if_fail (GIMP_IS_LAYER (layer), FALSE);
return gimp_image_position_layer (image, layer, 0,
TRUE, _("Raise Layer to Top"));
}
gboolean
gimp_image_lower_layer_to_bottom (GimpImage *image,
GimpLayer *layer)
{
gint length;
g_return_val_if_fail (GIMP_IS_IMAGE (image), FALSE);
g_return_val_if_fail (GIMP_IS_LAYER (layer), FALSE);
length = gimp_container_num_children (image->layers);
return gimp_image_position_layer (image, layer, length - 1,
TRUE, _("Lower Layer to Bottom"));
}
gboolean
gimp_image_position_layer (GimpImage *image,
GimpLayer *layer,
gint new_index,
gboolean push_undo,
const gchar *undo_desc)
{
gint index;
gint num_layers;
g_return_val_if_fail (GIMP_IS_IMAGE (image), FALSE);
g_return_val_if_fail (GIMP_IS_LAYER (layer), FALSE);
index = gimp_container_get_child_index (image->layers, GIMP_OBJECT (layer));
if (index < 0)
return FALSE;
num_layers = gimp_container_num_children (image->layers);
new_index = CLAMP (new_index, 0, num_layers - 1);
if (new_index == index)
return TRUE;
if (push_undo)
gimp_image_undo_push_layer_reposition (image, undo_desc, layer);
gimp_container_reorder (image->layers, GIMP_OBJECT (layer), new_index);
if (gimp_item_get_visible (GIMP_ITEM (layer)))
{
gint off_x, off_y;
gimp_item_offsets (GIMP_ITEM (layer), &off_x, &off_y);
gimp_image_update (image,
off_x, off_y,
gimp_item_width (GIMP_ITEM (layer)),
gimp_item_height (GIMP_ITEM (layer)));
gimp_viewable_invalidate_preview (GIMP_VIEWABLE (image));
}
return TRUE;
}
gboolean
gimp_image_add_channel (GimpImage *image,
GimpChannel *channel,
gint position)
{
GimpChannel *active_channel;
g_return_val_if_fail (GIMP_IS_IMAGE (image), FALSE);
g_return_val_if_fail (GIMP_IS_CHANNEL (channel), FALSE);
if (GIMP_ITEM (channel)->image != NULL &&
GIMP_ITEM (channel)->image != image)
{
g_warning ("%s: attempting to add channel to wrong image.", G_STRFUNC);
return FALSE;
}
if (gimp_container_have (image->channels, GIMP_OBJECT (channel)))
{
g_warning ("%s: trying to add channel to image twice.", G_STRFUNC);
return FALSE;
}
active_channel = gimp_image_get_active_channel (image);
gimp_image_undo_push_channel_add (image, _("Add Channel"),
channel, active_channel);
gimp_item_set_image (GIMP_ITEM (channel), image);
/* add the layer to the list at the specified position */
if (position == -1)
{
if (active_channel)
position = gimp_container_get_child_index (image->channels,
GIMP_OBJECT (active_channel));
else
position = 0;
}
/* Don't add at a non-existing index */
if (position > gimp_container_num_children (image->channels))
position = gimp_container_num_children (image->channels);
g_object_ref_sink (channel);
gimp_container_insert (image->channels, GIMP_OBJECT (channel), position);
g_object_unref (channel);
/* notify this image of the currently active channel */
gimp_image_set_active_channel (image, channel);
return TRUE;
}
void
gimp_image_remove_channel (GimpImage *image,
GimpChannel *channel)
{
GimpChannel *active_channel;
gint index;
gboolean undo_group = FALSE;
g_return_if_fail (GIMP_IS_IMAGE (image));
g_return_if_fail (GIMP_IS_CHANNEL (channel));
g_return_if_fail (gimp_container_have (image->channels,
GIMP_OBJECT (channel)));
if (gimp_drawable_has_floating_sel (GIMP_DRAWABLE (channel)))
{
gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_IMAGE_ITEM_REMOVE,
_("Remove Channel"));
undo_group = TRUE;
floating_sel_remove (gimp_image_floating_sel (image));
}
active_channel = gimp_image_get_active_channel (image);
index = gimp_container_get_child_index (image->channels,
GIMP_OBJECT (channel));
gimp_image_undo_push_channel_remove (image, _("Remove Channel"),
channel, index, active_channel);
g_object_ref (channel);
gimp_container_remove (image->channels, GIMP_OBJECT (channel));
gimp_item_removed (GIMP_ITEM (channel));
if (channel == active_channel)
{
gint n_children = gimp_container_num_children (image->channels);
if (n_children > 0)
{
index = CLAMP (index, 0, n_children - 1);
active_channel = (GimpChannel *)
gimp_container_get_child_by_index (image->channels, index);
gimp_image_set_active_channel (image, active_channel);
}
else
{
gimp_image_unset_active_channel (image);
}
}
g_object_unref (channel);
if (undo_group)
gimp_image_undo_group_end (image);
}
gboolean
gimp_image_raise_channel (GimpImage *image,
GimpChannel *channel)
{
gint index;
g_return_val_if_fail (GIMP_IS_IMAGE (image), FALSE);
g_return_val_if_fail (GIMP_IS_CHANNEL (channel), FALSE);
index = gimp_container_get_child_index (image->channels,
GIMP_OBJECT (channel));
if (index == 0)
{
g_message (_("Channel cannot be raised higher."));
return FALSE;
}
return gimp_image_position_channel (image, channel, index - 1,
TRUE, _("Raise Channel"));
}
gboolean
gimp_image_raise_channel_to_top (GimpImage *image,
GimpChannel *channel)
{
gint index;
g_return_val_if_fail (GIMP_IS_IMAGE (image), FALSE);
g_return_val_if_fail (GIMP_IS_CHANNEL (channel), FALSE);
index = gimp_container_get_child_index (image->channels,
GIMP_OBJECT (channel));
if (index == 0)
{
g_message (_("Channel is already on top."));
return FALSE;
}
return gimp_image_position_channel (image, channel, 0,
TRUE, _("Raise Channel to Top"));
}
gboolean
gimp_image_lower_channel (GimpImage *image,
GimpChannel *channel)
{
gint index;
g_return_val_if_fail (GIMP_IS_IMAGE (image), FALSE);
g_return_val_if_fail (GIMP_IS_CHANNEL (channel), FALSE);
index = gimp_container_get_child_index (image->channels,
GIMP_OBJECT (channel));
if (index == gimp_container_num_children (image->channels) - 1)
{
g_message (_("Channel cannot be lowered more."));
return FALSE;
}
return gimp_image_position_channel (image, channel, index + 1,
TRUE, _("Lower Channel"));
}
gboolean
gimp_image_lower_channel_to_bottom (GimpImage *image,
GimpChannel *channel)
{
gint index;
gint length;
g_return_val_if_fail (GIMP_IS_IMAGE (image), FALSE);
g_return_val_if_fail (GIMP_IS_CHANNEL (channel), FALSE);
index = gimp_container_get_child_index (image->channels,
GIMP_OBJECT (channel));
length = gimp_container_num_children (image->channels);
if (index == length - 1)
{
g_message (_("Channel is already on the bottom."));
return FALSE;
}
return gimp_image_position_channel (image, channel, length - 1,
TRUE, _("Lower Channel to Bottom"));
}
gboolean
gimp_image_position_channel (GimpImage *image,
GimpChannel *channel,
gint new_index,
gboolean push_undo,
const gchar *undo_desc)
{
gint index;
gint num_channels;
g_return_val_if_fail (GIMP_IS_IMAGE (image), FALSE);
g_return_val_if_fail (GIMP_IS_CHANNEL (channel), FALSE);
index = gimp_container_get_child_index (image->channels,
GIMP_OBJECT (channel));
if (index < 0)
return FALSE;
num_channels = gimp_container_num_children (image->channels);
new_index = CLAMP (new_index, 0, num_channels - 1);
if (new_index == index)
return TRUE;
if (push_undo)
gimp_image_undo_push_channel_reposition (image, undo_desc, channel);
gimp_container_reorder (image->channels,
GIMP_OBJECT (channel), new_index);
if (gimp_item_get_visible (GIMP_ITEM (channel)))
{
gint off_x, off_y;
gimp_item_offsets (GIMP_ITEM (channel), &off_x, &off_y);
gimp_image_update (image,
off_x, off_y,
gimp_item_width (GIMP_ITEM (channel)),
gimp_item_height (GIMP_ITEM (channel)));
gimp_viewable_invalidate_preview (GIMP_VIEWABLE (image));
}
return TRUE;
}
gboolean
gimp_image_add_vectors (GimpImage *image,
GimpVectors *vectors,
gint position)
{
GimpVectors *active_vectors;
g_return_val_if_fail (GIMP_IS_IMAGE (image), FALSE);
g_return_val_if_fail (GIMP_IS_VECTORS (vectors), FALSE);
if (GIMP_ITEM (vectors)->image != NULL &&
GIMP_ITEM (vectors)->image != image)
{
g_warning ("%s: attempting to add vectors to wrong image.", G_STRFUNC);
return FALSE;
}
if (gimp_container_have (image->vectors, GIMP_OBJECT (vectors)))
{
g_warning ("%s: trying to add vectors to image twice.", G_STRFUNC);
return FALSE;
}
active_vectors = gimp_image_get_active_vectors (image);
gimp_image_undo_push_vectors_add (image, _("Add Path"),
vectors, active_vectors);
gimp_item_set_image (GIMP_ITEM (vectors), image);
/* add the layer to the list at the specified position */
if (position == -1)
{
if (active_vectors)
position = gimp_container_get_child_index (image->vectors,
GIMP_OBJECT (active_vectors));
else
position = 0;
}
/* Don't add at a non-existing index */
if (position > gimp_container_num_children (image->vectors))
position = gimp_container_num_children (image->vectors);
g_object_ref_sink (vectors);
gimp_container_insert (image->vectors, GIMP_OBJECT (vectors), position);
g_object_unref (vectors);
/* notify this image of the currently active vectors */
gimp_image_set_active_vectors (image, vectors);
return TRUE;
}
void
gimp_image_remove_vectors (GimpImage *image,
GimpVectors *vectors)
{
GimpVectors *active_vectors;
gint index;
g_return_if_fail (GIMP_IS_IMAGE (image));
g_return_if_fail (GIMP_IS_VECTORS (vectors));
g_return_if_fail (gimp_container_have (image->vectors,
GIMP_OBJECT (vectors)));
active_vectors = gimp_image_get_active_vectors (image);
index = gimp_container_get_child_index (image->vectors,
GIMP_OBJECT (vectors));
gimp_image_undo_push_vectors_remove (image, _("Remove Path"),
vectors, index, active_vectors);
g_object_ref (vectors);
gimp_container_remove (image->vectors, GIMP_OBJECT (vectors));
gimp_item_removed (GIMP_ITEM (vectors));
if (vectors == active_vectors)
{
gint n_children = gimp_container_num_children (image->vectors);
if (n_children > 0)
{
index = CLAMP (index, 0, n_children - 1);
active_vectors = (GimpVectors *)
gimp_container_get_child_by_index (image->vectors, index);
}
else
{
active_vectors = NULL;
}
gimp_image_set_active_vectors (image, active_vectors);
}
g_object_unref (vectors);
}
gboolean
gimp_image_raise_vectors (GimpImage *image,
GimpVectors *vectors)
{
gint index;
g_return_val_if_fail (GIMP_IS_IMAGE (image), FALSE);
g_return_val_if_fail (GIMP_IS_VECTORS (vectors), FALSE);
index = gimp_container_get_child_index (image->vectors,
GIMP_OBJECT (vectors));
if (index == 0)
{
g_message (_("Path cannot be raised higher."));
return FALSE;
}
return gimp_image_position_vectors (image, vectors, index - 1,
TRUE, _("Raise Path"));
}
gboolean
gimp_image_raise_vectors_to_top (GimpImage *image,
GimpVectors *vectors)
{
gint index;
g_return_val_if_fail (GIMP_IS_IMAGE (image), FALSE);
g_return_val_if_fail (GIMP_IS_VECTORS (vectors), FALSE);
index = gimp_container_get_child_index (image->vectors,
GIMP_OBJECT (vectors));
if (index == 0)
{
g_message (_("Path is already on top."));
return FALSE;
}
return gimp_image_position_vectors (image, vectors, 0,
TRUE, _("Raise Path to Top"));
}
gboolean
gimp_image_lower_vectors (GimpImage *image,
GimpVectors *vectors)
{
gint index;
g_return_val_if_fail (GIMP_IS_IMAGE (image), FALSE);
g_return_val_if_fail (GIMP_IS_VECTORS (vectors), FALSE);
index = gimp_container_get_child_index (image->vectors,
GIMP_OBJECT (vectors));
if (index == gimp_container_num_children (image->vectors) - 1)
{
g_message (_("Path cannot be lowered more."));
return FALSE;
}
return gimp_image_position_vectors (image, vectors, index + 1,
TRUE, _("Lower Path"));
}
gboolean
gimp_image_lower_vectors_to_bottom (GimpImage *image,
GimpVectors *vectors)
{
gint index;
gint length;
g_return_val_if_fail (GIMP_IS_IMAGE (image), FALSE);
g_return_val_if_fail (GIMP_IS_VECTORS (vectors), FALSE);
index = gimp_container_get_child_index (image->vectors,
GIMP_OBJECT (vectors));
length = gimp_container_num_children (image->vectors);
if (index == length - 1)
{
g_message (_("Path is already on the bottom."));
return FALSE;
}
return gimp_image_position_vectors (image, vectors, length - 1,
TRUE, _("Lower Path to Bottom"));
}
gboolean
gimp_image_position_vectors (GimpImage *image,
GimpVectors *vectors,
gint new_index,
gboolean push_undo,
const gchar *undo_desc)
{
gint index;
gint num_vectors;
g_return_val_if_fail (GIMP_IS_IMAGE (image), FALSE);
g_return_val_if_fail (GIMP_IS_VECTORS (vectors), FALSE);
index = gimp_container_get_child_index (image->vectors,
GIMP_OBJECT (vectors));
if (index < 0)
return FALSE;
num_vectors = gimp_container_num_children (image->vectors);
new_index = CLAMP (new_index, 0, num_vectors - 1);
if (new_index == index)
return TRUE;
if (push_undo)
gimp_image_undo_push_vectors_reposition (image, undo_desc, vectors);
gimp_container_reorder (image->vectors,
GIMP_OBJECT (vectors), new_index);
return TRUE;
}
gboolean
gimp_image_layer_boundary (const GimpImage *image,
BoundSeg **segs,
gint *n_segs)
{
GimpLayer *layer;
g_return_val_if_fail (GIMP_IS_IMAGE (image), FALSE);
g_return_val_if_fail (segs != NULL, FALSE);
g_return_val_if_fail (n_segs != NULL, FALSE);
/* The second boundary corresponds to the active layer's
* perimeter...
*/
layer = gimp_image_get_active_layer (image);
if (layer)
{
*segs = gimp_layer_boundary (layer, n_segs);
return TRUE;
}
else
{
*segs = NULL;
*n_segs = 0;
return FALSE;
}
}
GimpLayer *
gimp_image_pick_correlate_layer (const GimpImage *image,
gint x,
gint y)
{
GList *list;
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
for (list = GIMP_LIST (image->layers)->list;
list;
list = g_list_next (list))
{
GimpLayer *layer = list->data;
gint off_x, off_y;
gimp_item_offsets (GIMP_ITEM (layer), &off_x, &off_y);
if (gimp_pickable_get_opacity_at (GIMP_PICKABLE (layer),
x - off_x, y - off_y) > 63)
{
return layer;
}
}
return NULL;
}
gboolean
gimp_image_coords_in_active_pickable (GimpImage *image,
const GimpCoords *coords,
gboolean sample_merged,
gboolean selected_only)
{
gint x, y;
gboolean in_pickable = FALSE;
g_return_val_if_fail (GIMP_IS_IMAGE (image), FALSE);
x = floor (coords->x);
y = floor (coords->y);
if (sample_merged)
{
if (x >= 0 && x < image->width &&
y >= 0 && y < image->height)
in_pickable = TRUE;
}
else
{
GimpDrawable *drawable = gimp_image_active_drawable (image);
if (drawable)
{
GimpItem *item = GIMP_ITEM (drawable);
gint off_x, off_y;
gint d_x, d_y;
gimp_item_offsets (item, &off_x, &off_y);
d_x = x - off_x;
d_y = y - off_y;
if (d_x >= 0 && d_x < gimp_item_width (item) &&
d_y >= 0 && d_y < gimp_item_height (item))
in_pickable = TRUE;
}
}
if (in_pickable && selected_only)
{
GimpChannel *selection = gimp_image_get_mask (image);
if (! gimp_channel_is_empty (selection) &&
! gimp_pickable_get_opacity_at (GIMP_PICKABLE (selection),
x, y))
{
in_pickable = FALSE;
}
}
return in_pickable;
}
void
gimp_image_invalidate_layer_previews (GimpImage *image)
{
g_return_if_fail (GIMP_IS_IMAGE (image));
gimp_container_foreach (image->layers,
(GFunc) gimp_viewable_invalidate_preview,
NULL);
}
void
gimp_image_invalidate_channel_previews (GimpImage *image)
{
g_return_if_fail (GIMP_IS_IMAGE (image));
gimp_container_foreach (image->channels,
(GFunc) gimp_viewable_invalidate_preview,
NULL);
}
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