PIKApp/app/widgets/pikapickablebutton.c

373 lines
13 KiB
C

/* PIKA - Photo and Image Kooker Application
* a rebranding of The GNU Image Manipulation Program (created with heckimp)
* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
*
* Original copyright, applying to most contents (license remains unchanged):
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* pikapickablebutton.c
* Copyright (C) 2013 Michael Natterer <mitch@gimp.org>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <gegl.h>
#include <gtk/gtk.h>
#include "libpikabase/pikabase.h"
#include "libpikawidgets/pikawidgets.h"
#include "widgets-types.h"
#include "core/pikacontext.h"
#include "core/pikaimage.h"
#include "core/pikalayer.h"
#include "core/pikalayermask.h"
#include "core/pikapickable.h"
#include "pikadnd.h"
#include "pikaview.h"
#include "pikaviewrenderer.h"
#include "pikapickablebutton.h"
#include "pikapickablepopup.h"
enum
{
PROP_0,
PROP_CONTEXT,
PROP_PICKABLE
};
struct _PikaPickableButtonPrivate
{
gint view_size;
gint view_border_width;
PikaContext *context;
PikaPickable *pickable;
GtkWidget *view;
GBinding *popup_binding;
GtkWidget *popup;
PikaPickable *initial_pickable;
};
static void pika_pickable_button_constructed (GObject *object);
static void pika_pickable_button_dispose (GObject *object);
static void pika_pickable_button_finalize (GObject *object);
static void pika_pickable_button_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void pika_pickable_button_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
static void pika_pickable_button_clicked (GtkButton *button);
static void pika_pickable_button_popup_confirm (PikaPickableButton *button);
static void pika_pickable_button_popup_cancel (PikaPickableButton *button);
static void pika_pickable_button_drop_pickable (GtkWidget *widget,
gint x,
gint y,
PikaViewable *viewable,
gpointer data);
static void pika_pickable_button_notify_buffer (PikaPickable *pickable,
const GParamSpec *pspec,
PikaPickableButton *button);
G_DEFINE_TYPE_WITH_PRIVATE (PikaPickableButton, pika_pickable_button,
PIKA_TYPE_BUTTON)
#define parent_class pika_pickable_button_parent_class
static void
pika_pickable_button_class_init (PikaPickableButtonClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkButtonClass *button_class = GTK_BUTTON_CLASS (klass);
object_class->constructed = pika_pickable_button_constructed;
object_class->dispose = pika_pickable_button_dispose;
object_class->finalize = pika_pickable_button_finalize;
object_class->get_property = pika_pickable_button_get_property;
object_class->set_property = pika_pickable_button_set_property;
button_class->clicked = pika_pickable_button_clicked;
g_object_class_install_property (object_class, PROP_CONTEXT,
g_param_spec_object ("context",
NULL, NULL,
PIKA_TYPE_CONTEXT,
PIKA_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY));
g_object_class_install_property (object_class, PROP_PICKABLE,
g_param_spec_object ("pickable",
NULL, NULL,
PIKA_TYPE_PICKABLE,
PIKA_PARAM_READWRITE));
}
static void
pika_pickable_button_init (PikaPickableButton *button)
{
button->private = pika_pickable_button_get_instance_private (button);
button->private->view_size = PIKA_VIEW_SIZE_LARGE;
button->private->view_border_width = 1;
button->private->popup_binding = NULL;
pika_dnd_viewable_dest_add (GTK_WIDGET (button), PIKA_TYPE_LAYER,
pika_pickable_button_drop_pickable,
NULL);
pika_dnd_viewable_dest_add (GTK_WIDGET (button), PIKA_TYPE_LAYER_MASK,
pika_pickable_button_drop_pickable,
NULL);
pika_dnd_viewable_dest_add (GTK_WIDGET (button), PIKA_TYPE_CHANNEL,
pika_pickable_button_drop_pickable,
NULL);
pika_dnd_viewable_dest_add (GTK_WIDGET (button), PIKA_TYPE_IMAGE,
pika_pickable_button_drop_pickable,
NULL);
}
static void
pika_pickable_button_constructed (GObject *object)
{
PikaPickableButton *button = PIKA_PICKABLE_BUTTON (object);
G_OBJECT_CLASS (parent_class)->constructed (object);
pika_assert (PIKA_IS_CONTEXT (button->private->context));
button->private->view =
pika_view_new_by_types (button->private->context,
PIKA_TYPE_VIEW,
PIKA_TYPE_VIEWABLE,
button->private->view_size,
button->private->view_border_width,
FALSE);
gtk_container_add (GTK_CONTAINER (button), button->private->view);
gtk_widget_show (button->private->view);
}
static void
pika_pickable_button_dispose (GObject *object)
{
PikaPickableButton *button = PIKA_PICKABLE_BUTTON (object);
pika_pickable_button_set_pickable (button, NULL);
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
pika_pickable_button_finalize (GObject *object)
{
PikaPickableButton *button = PIKA_PICKABLE_BUTTON (object);
g_clear_object (&button->private->context);
g_clear_object (&button->private->initial_pickable);
if (button->private->popup)
gtk_widget_destroy (button->private->popup);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
pika_pickable_button_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
PikaPickableButton *button = PIKA_PICKABLE_BUTTON (object);
switch (property_id)
{
case PROP_CONTEXT:
if (button->private->context)
g_object_unref (button->private->context);
button->private->context = g_value_dup_object (value);
break;
case PROP_PICKABLE:
pika_pickable_button_set_pickable (button, g_value_get_object (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
pika_pickable_button_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
PikaPickableButton *button = PIKA_PICKABLE_BUTTON (object);
switch (property_id)
{
case PROP_CONTEXT:
g_value_set_object (value, button->private->context);
break;
case PROP_PICKABLE:
g_value_set_object (value, button->private->pickable);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
pika_pickable_button_clicked (GtkButton *button)
{
PikaPickableButton *pickable_button = PIKA_PICKABLE_BUTTON (button);
GtkWidget *popup;
popup = pika_pickable_popup_new (pickable_button->private->context,
pickable_button->private->view_size,
pickable_button->private->view_border_width);
g_signal_connect_swapped (popup, "confirm",
G_CALLBACK (pika_pickable_button_popup_confirm),
button);
g_signal_connect_swapped (popup, "cancel",
G_CALLBACK (pika_pickable_button_popup_cancel),
button);
pickable_button->private->popup_binding = g_object_bind_property (G_OBJECT (button), "pickable",
G_OBJECT (popup), "pickable",
G_BINDING_BIDIRECTIONAL | G_BINDING_SYNC_CREATE);
pickable_button->private->initial_pickable = pickable_button->private->pickable;
if (pickable_button->private->initial_pickable)
g_object_ref (pickable_button->private->initial_pickable);
pickable_button->private->popup = popup;
g_signal_connect (popup, "destroy",
G_CALLBACK (gtk_widget_destroyed),
&pickable_button->private->popup);
pika_popup_show (PIKA_POPUP (popup), GTK_WIDGET (button));
}
static void
pika_pickable_button_popup_confirm (PikaPickableButton *button)
{
g_clear_pointer (&button->private->popup_binding, g_binding_unbind);
g_clear_object (&button->private->initial_pickable);
}
static void
pika_pickable_button_popup_cancel (PikaPickableButton *button)
{
pika_pickable_button_set_pickable (button, button->private->initial_pickable);
pika_pickable_button_popup_confirm (button);
}
static void
pika_pickable_button_drop_pickable (GtkWidget *widget,
gint x,
gint y,
PikaViewable *viewable,
gpointer data)
{
pika_pickable_button_set_pickable (PIKA_PICKABLE_BUTTON (widget),
PIKA_PICKABLE (viewable));
}
static void
pika_pickable_button_notify_buffer (PikaPickable *pickable,
const GParamSpec *pspec,
PikaPickableButton *button)
{
GeglBuffer *buffer = pika_pickable_get_buffer (pickable);
if (buffer)
g_object_notify (G_OBJECT (button), "pickable");
else
pika_pickable_button_set_pickable (button, NULL);
}
/* public functions */
GtkWidget *
pika_pickable_button_new (PikaContext *context,
gint view_size,
gint view_border_width)
{
PikaPickableButton *button;
g_return_val_if_fail (PIKA_IS_CONTEXT (context), NULL);
g_return_val_if_fail (view_size > 0 &&
view_size <= PIKA_VIEWABLE_MAX_BUTTON_SIZE, NULL);
g_return_val_if_fail (view_border_width >= 0 &&
view_border_width <= PIKA_VIEW_MAX_BORDER_WIDTH,
NULL);
button = g_object_new (PIKA_TYPE_PICKABLE_BUTTON,
"context", context,
NULL);
button->private->view_size = view_size;
button->private->view_border_width = view_border_width;
return GTK_WIDGET (button);
}
PikaPickable *
pika_pickable_button_get_pickable (PikaPickableButton *button)
{
g_return_val_if_fail (PIKA_IS_PICKABLE_BUTTON (button), NULL);
return button->private->pickable;
}
void
pika_pickable_button_set_pickable (PikaPickableButton *button,
PikaPickable *pickable)
{
g_return_if_fail (PIKA_IS_PICKABLE_BUTTON (button));
if (pickable != button->private->pickable)
{
if (button->private->pickable)
g_signal_handlers_disconnect_by_func (button->private->pickable,
pika_pickable_button_notify_buffer,
button);
g_set_object (&button->private->pickable, pickable);
if (button->private->pickable)
g_signal_connect (button->private->pickable, "notify::buffer",
G_CALLBACK (pika_pickable_button_notify_buffer),
button);
pika_view_set_viewable (PIKA_VIEW (button->private->view),
PIKA_VIEWABLE (pickable));
g_object_notify (G_OBJECT (button), "pickable");
}
}