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gimp/app/dialogs/item-options-dialog.c
Jehan 610e48a170 app: new link layers. 
These are layers who content depends on another source (right now only
an external image). This can be useful when for instance working at
several people on a single artwork, hence being able to load new
versions of an image without even touching anything in the XCF (for
instance, say you draw an animated character while someone else is
taking care of the background).

Similarly to what we do for text layers, once you start modifying the
contents, it turns into a "normal" layer. The link information is still
available though, so it is possible to revert to the monitoring state
with the menu item "Monitor Linked Image" which appear when a link layer
became a normal layer.

This is not finale as I'm still experimenting. In particular, I have not
implemented XCF saving/loading yet for this new layer type.
2025-03-31 21:41:18 +02:00

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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 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <gegl.h>
#include <gtk/gtk.h>
#include "libgimpbase/gimpbase.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "dialogs-types.h"
#include "config/gimpcoreconfig.h"
#include "core/gimp.h"
#include "core/gimpcontext.h"
#include "core/gimpimage.h"
#include "core/gimpitem.h"
#include "widgets/gimpviewabledialog.h"
#include "widgets/gimpwidgets-utils.h"
#include "item-options-dialog.h"
#include "gimp-intl.h"
typedef struct _ItemOptionsDialog ItemOptionsDialog;
struct _ItemOptionsDialog
{
GimpImage *image;
GimpItem *item;
GimpContext *context;
gboolean visible;
GimpColorTag color_tag;
gboolean lock_content;
gboolean lock_position;
gboolean lock_visibility;
GimpItemOptionsCallback callback;
gpointer user_data;
GtkWidget *left_vbox;
GtkWidget *left_grid;
gint grid_row;
GtkWidget *name_entry;
GtkWidget *right_frame;
GtkWidget *right_vbox;
GtkWidget *lock_position_toggle;
};
/* local function prototypes */
static void item_options_dialog_free (ItemOptionsDialog *private);
static void item_options_dialog_response (GtkWidget *dialog,
gint response_id,
ItemOptionsDialog *private);
static GtkWidget * check_button_with_icon_new (const gchar *label,
const gchar *icon_name,
GtkBox *vbox);
static gint check_button_get_bold_label_width (const gchar *text);
/* public functions */
GtkWidget *
item_options_dialog_new (GimpImage *image,
GimpItem *item,
GimpContext *context,
GtkWidget *parent,
const gchar *title,
const gchar *role,
const gchar *icon_name,
const gchar *desc,
const gchar *help_id,
const gchar *name_label,
const gchar *lock_content_icon_name,
const gchar *lock_content_label,
const gchar *lock_position_label,
const gchar *lock_visibility_label,
const gchar *item_name,
gboolean item_visible,
GimpColorTag item_color_tag,
gboolean item_lock_content,
gboolean item_lock_position,
gboolean item_lock_visibility,
GimpItemOptionsCallback callback,
gpointer user_data)
{
ItemOptionsDialog *private;
GtkWidget *dialog;
GimpViewable *viewable;
GtkWidget *main_hbox;
GtkWidget *grid;
GtkWidget *button;
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
g_return_val_if_fail (item == NULL || GIMP_IS_ITEM (item), NULL);
g_return_val_if_fail (GIMP_IS_CONTEXT (context), NULL);
g_return_val_if_fail (GTK_IS_WIDGET (parent), NULL);
g_return_val_if_fail (title != NULL, NULL);
g_return_val_if_fail (role != NULL, NULL);
g_return_val_if_fail (icon_name != NULL, NULL);
g_return_val_if_fail (desc != NULL, NULL);
g_return_val_if_fail (help_id != NULL, NULL);
g_return_val_if_fail (callback != NULL, NULL);
private = g_slice_new0 (ItemOptionsDialog);
private->image = image;
private->item = item;
private->context = context;
private->visible = item_visible;
private->color_tag = item_color_tag;
private->lock_content = item_lock_content;
private->lock_position = item_lock_position;
private->lock_visibility = item_lock_visibility;
private->callback = callback;
private->user_data = user_data;
if (item)
viewable = GIMP_VIEWABLE (item);
else
viewable = GIMP_VIEWABLE (image);
dialog = gimp_viewable_dialog_new (g_list_prepend (NULL, viewable), context,
title, role, icon_name, desc,
parent,
gimp_standard_help_func, help_id,
_("_Cancel"), GTK_RESPONSE_CANCEL,
_("_OK"), GTK_RESPONSE_OK,
NULL);
gtk_dialog_set_default_response (GTK_DIALOG (dialog), GTK_RESPONSE_OK);
gimp_dialog_set_alternative_button_order (GTK_DIALOG (dialog),
GTK_RESPONSE_OK,
GTK_RESPONSE_CANCEL,
-1);
g_signal_connect (dialog, "response",
G_CALLBACK (item_options_dialog_response),
private);
g_object_weak_ref (G_OBJECT (dialog),
(GWeakNotify) item_options_dialog_free, private);
g_object_set_data (G_OBJECT (dialog), "item-options-dialog-private", private);
main_hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 12);
gtk_container_set_border_width (GTK_CONTAINER (main_hbox), 12);
gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (dialog))),
main_hbox, TRUE, TRUE, 0);
gtk_widget_show (main_hbox);
private->left_vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
gtk_box_pack_start (GTK_BOX (main_hbox), private->left_vbox, TRUE, TRUE, 0);
gtk_widget_show (private->left_vbox);
private->left_grid = grid = gtk_grid_new ();
gtk_grid_set_column_spacing (GTK_GRID (grid), 6);
gtk_grid_set_row_spacing (GTK_GRID (grid), 6);
gtk_box_pack_start (GTK_BOX (private->left_vbox), grid, FALSE, FALSE, 0);
gtk_widget_show (grid);
/* The name label and entry */
if (name_label)
{
GtkWidget *radio;
GtkWidget *radio_box;
GList *children;
GList *list;
private->name_entry = gtk_entry_new ();
gtk_entry_set_activates_default (GTK_ENTRY (private->name_entry), TRUE);
gtk_entry_set_text (GTK_ENTRY (private->name_entry), item_name);
gimp_grid_attach_aligned (GTK_GRID (grid), 0, private->grid_row++,
name_label, 0.0, 0.5,
private->name_entry, 1);
/* Make the item name entry field have focus on creation */
gtk_widget_grab_focus (private->name_entry);
radio_box = gimp_enum_radio_box_new (GIMP_TYPE_COLOR_TAG,
G_CALLBACK (gimp_radio_button_update),
&private->color_tag, NULL,
&radio);
gtk_widget_set_name (radio_box, "gimp-color-tag-box");
gtk_orientable_set_orientation (GTK_ORIENTABLE (radio_box),
GTK_ORIENTATION_HORIZONTAL);
gimp_grid_attach_aligned (GTK_GRID (grid), 0, private->grid_row++,
_("Color tag:"), 0.0, 0.5,
radio_box, 1);
gimp_int_radio_group_set_active (GTK_RADIO_BUTTON (radio),
private->color_tag);
children = gtk_container_get_children (GTK_CONTAINER (radio_box));
for (list = children;
list;
list = g_list_next (list))
{
GimpColorTag color_tag;
GeglColor *rgb = gegl_color_new ("none");
GtkWidget *image;
radio = list->data;
g_object_set (radio, "draw-indicator", FALSE, NULL);
gtk_widget_destroy (gtk_bin_get_child (GTK_BIN (radio)));
color_tag = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (radio),
"gimp-item-data"));
if (gimp_get_color_tag_color (color_tag, rgb, FALSE))
{
gint w, h;
image = gimp_color_area_new (rgb, GIMP_COLOR_AREA_FLAT, 0);
gimp_color_area_set_color_config (GIMP_COLOR_AREA (image),
context->gimp->config->color_management);
gtk_icon_size_lookup (GTK_ICON_SIZE_MENU, &w, &h);
gtk_widget_set_size_request (image, w, h);
}
else
{
image = gtk_image_new_from_icon_name (GIMP_ICON_CLOSE,
GTK_ICON_SIZE_MENU);
}
g_object_unref (rgb);
gtk_container_add (GTK_CONTAINER (radio), image);
gtk_widget_show (image);
}
g_list_free (children);
}
/* The switches frame & vbox */
private->right_frame = gimp_frame_new (_("Switches"));
gtk_box_pack_start (GTK_BOX (main_hbox), private->right_frame,
FALSE, FALSE, 0);
gtk_widget_show (private->right_frame);
private->right_vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 6);
gtk_container_add (GTK_CONTAINER (private->right_frame), private->right_vbox);
gtk_widget_show (private->right_vbox);
button = check_button_with_icon_new (_("_Visible"),
GIMP_ICON_VISIBLE,
GTK_BOX (private->right_vbox));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button),
private->visible);
g_signal_connect (button, "toggled",
G_CALLBACK (gimp_toggle_button_update),
&private->visible);
button = check_button_with_icon_new (lock_content_label,
lock_content_icon_name,
GTK_BOX (private->right_vbox));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button),
private->lock_content);
g_signal_connect (button, "toggled",
G_CALLBACK (gimp_toggle_button_update),
&private->lock_content);
button = check_button_with_icon_new (lock_position_label,
GIMP_ICON_LOCK_POSITION,
GTK_BOX (private->right_vbox));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button),
private->lock_position);
g_signal_connect (button, "toggled",
G_CALLBACK (gimp_toggle_button_update),
&private->lock_position);
private->lock_position_toggle = button;
button = check_button_with_icon_new (lock_visibility_label,
GIMP_ICON_LOCK_VISIBILITY,
GTK_BOX (private->right_vbox));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button),
private->lock_visibility);
g_signal_connect (button, "toggled",
G_CALLBACK (gimp_toggle_button_update),
&private->lock_visibility);
return dialog;
}
GtkWidget *
item_options_dialog_get_vbox (GtkWidget *dialog)
{
ItemOptionsDialog *private;
g_return_val_if_fail (GIMP_IS_VIEWABLE_DIALOG (dialog), NULL);
private = g_object_get_data (G_OBJECT (dialog),
"item-options-dialog-private");
g_return_val_if_fail (private != NULL, NULL);
return private->left_vbox;
}
GtkWidget *
item_options_dialog_get_right_vbox (GtkWidget *dialog)
{
ItemOptionsDialog *private;
g_return_val_if_fail (GIMP_IS_VIEWABLE_DIALOG (dialog), NULL);
private = g_object_get_data (G_OBJECT (dialog),
"item-options-dialog-private");
g_return_val_if_fail (private != NULL, NULL);
return private->right_vbox;
}
GtkWidget *
item_options_dialog_get_grid (GtkWidget *dialog,
gint *next_row)
{
ItemOptionsDialog *private;
g_return_val_if_fail (GIMP_IS_VIEWABLE_DIALOG (dialog), NULL);
g_return_val_if_fail (next_row != NULL, NULL);
private = g_object_get_data (G_OBJECT (dialog),
"item-options-dialog-private");
g_return_val_if_fail (private != NULL, NULL);
*next_row = private->grid_row;
return private->left_grid;
}
GtkWidget *
item_options_dialog_get_name_entry (GtkWidget *dialog)
{
ItemOptionsDialog *private;
g_return_val_if_fail (GIMP_IS_VIEWABLE_DIALOG (dialog), NULL);
private = g_object_get_data (G_OBJECT (dialog),
"item-options-dialog-private");
g_return_val_if_fail (private != NULL, NULL);
return private->name_entry;
}
GtkWidget *
item_options_dialog_get_lock_position (GtkWidget *dialog)
{
ItemOptionsDialog *private;
g_return_val_if_fail (GIMP_IS_VIEWABLE_DIALOG (dialog), NULL);
private = g_object_get_data (G_OBJECT (dialog),
"item-options-dialog-private");
g_return_val_if_fail (private != NULL, NULL);
return private->lock_position_toggle;
}
void
item_options_dialog_add_widget (GtkWidget *dialog,
const gchar *label,
GtkWidget *widget)
{
ItemOptionsDialog *private;
g_return_if_fail (GIMP_IS_VIEWABLE_DIALOG (dialog));
g_return_if_fail (GTK_IS_WIDGET (widget));
private = g_object_get_data (G_OBJECT (dialog),
"item-options-dialog-private");
g_return_if_fail (private != NULL);
gimp_grid_attach_aligned (GTK_GRID (private->left_grid),
0, private->grid_row++,
label, 0.0, 0.5,
widget, 1);
}
GtkWidget *
item_options_dialog_add_switch (GtkWidget *dialog,
const gchar *icon_name,
const gchar *label)
{
ItemOptionsDialog *private;
g_return_val_if_fail (GIMP_IS_VIEWABLE_DIALOG (dialog), NULL);
g_return_val_if_fail (icon_name != NULL, NULL);
g_return_val_if_fail (label != NULL, NULL);
private = g_object_get_data (G_OBJECT (dialog),
"item-options-dialog-private");
g_return_val_if_fail (private != NULL, NULL);
return check_button_with_icon_new (label, icon_name,
GTK_BOX (private->right_vbox));
}
void
item_options_dialog_set_switches_visible (GtkWidget *dialog,
gboolean visible)
{
ItemOptionsDialog *private;
g_return_if_fail (GIMP_IS_VIEWABLE_DIALOG (dialog));
private = g_object_get_data (G_OBJECT (dialog),
"item-options-dialog-private");
g_return_if_fail (private != NULL);
gtk_widget_set_visible (private->right_frame, visible);
}
/* private functions */
static void
item_options_dialog_free (ItemOptionsDialog *private)
{
g_slice_free (ItemOptionsDialog, private);
}
static void
item_options_dialog_response (GtkWidget *dialog,
gint response_id,
ItemOptionsDialog *private)
{
if (response_id == GTK_RESPONSE_OK)
{
const gchar *name = NULL;
if (private->name_entry)
name = gtk_entry_get_text (GTK_ENTRY (private->name_entry));
private->callback (dialog,
private->image,
private->item,
private->context,
name,
private->visible,
private->color_tag,
private->lock_content,
private->lock_position,
private->lock_visibility,
private->user_data);
}
else
{
gtk_widget_destroy (dialog);
}
}
static GtkWidget *
check_button_with_icon_new (const gchar *label,
const gchar *icon_name,
GtkBox *vbox)
{
GtkWidget *hbox;
GtkWidget *button;
GtkWidget *image;
GtkWidget *label_widget;
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
gtk_box_pack_start (vbox, hbox, FALSE, FALSE, 0);
gtk_widget_show (hbox);
image = gtk_image_new_from_icon_name (icon_name, GTK_ICON_SIZE_BUTTON);
gtk_box_pack_start (GTK_BOX (hbox), image, FALSE, FALSE, 0);
gtk_widget_show (image);
button = gtk_check_button_new_with_mnemonic (label);
gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 0);
gtk_widget_set_visible (button, TRUE);
/* Resize the label to its bold size to avoid a GUI twitch */
label_widget = gtk_bin_get_child (GTK_BIN (button));
gtk_widget_set_size_request (label_widget,
check_button_get_bold_label_width (label),
-1);
return button;
}
static gint
check_button_get_bold_label_width (const gchar *text)
{
GtkWidget *temp_label = gtk_label_new (NULL);
GtkRequisition natural_size;
gtk_label_set_text (GTK_LABEL (temp_label), text);
gtk_widget_set_visible (temp_label, TRUE);
gimp_label_set_attributes (GTK_LABEL (temp_label),
PANGO_ATTR_WEIGHT, PANGO_WEIGHT_BOLD,
-1);
gtk_widget_get_preferred_size (temp_label, NULL, &natural_size);
gtk_widget_destroy (temp_label);
return natural_size.width;
}
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