PIKApp/app/widgets/pikapickablechooser.c

590 lines
24 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
*
* pikapickablechooser.c
* Copyright (C) 2023 Jehan
*
* 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 <gdk/gdkkeysyms.h>
#include "libpikabase/pikabase.h"
#include "libpikawidgets/pikawidgets.h"
#include "widgets-types.h"
#include "core/pika.h"
#include "core/pikachannel.h"
#include "core/pikacontext.h"
#include "core/pikaimage.h"
#include "core/pikalayer.h"
#include "core/pikapickable.h"
#include "core/pikaviewable.h"
#include "pikacontainertreeview.h"
#include "pikacontainerview.h"
#include "pikapickablechooser.h"
#include "pikaviewrenderer.h"
#include "pika-intl.h"
enum
{
ACTIVATE,
LAST_SIGNAL
};
enum
{
PROP_0,
PROP_CONTEXT,
PROP_PICKABLE_TYPE,
PROP_PICKABLE,
PROP_VIEW_SIZE,
PROP_VIEW_BORDER_WIDTH
};
struct _PikaPickableChooserPrivate
{
GType pickable_type;
PikaPickable *pickable;
PikaContext *context;
gint view_size;
gint view_border_width;
GtkWidget *image_view;
GtkWidget *layer_view;
GtkWidget *channel_view;
GtkWidget *layer_label;
};
static void pika_pickable_chooser_constructed (GObject *object);
static void pika_pickable_chooser_finalize (GObject *object);
static void pika_pickable_chooser_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void pika_pickable_chooser_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
static void pika_pickable_chooser_image_changed (PikaContext *context,
PikaImage *image,
PikaPickableChooser *chooser);
static void pika_pickable_chooser_item_activate (PikaContainerView *view,
PikaPickable *pickable,
gpointer unused,
PikaPickableChooser *chooser);
static void pika_pickable_chooser_items_selected (PikaContainerView *view,
GList *items,
GList *paths,
PikaPickableChooser *chooser);
G_DEFINE_TYPE_WITH_PRIVATE (PikaPickableChooser, pika_pickable_chooser, GTK_TYPE_FRAME)
#define parent_class pika_pickable_chooser_parent_class
static guint signals[LAST_SIGNAL];
static void
pika_pickable_chooser_class_init (PikaPickableChooserClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->constructed = pika_pickable_chooser_constructed;
object_class->finalize = pika_pickable_chooser_finalize;
object_class->get_property = pika_pickable_chooser_get_property;
object_class->set_property = pika_pickable_chooser_set_property;
/**
* PikaPickableChooser::activate:
* @chooser:
*
* Emitted when a pickable is activated, which is mostly forwarding when
* "activate-item" signal is emitted from any of either the image, layer or
* channel view. E.g. this happens when one double-click on one of the
* pickables.
*/
signals[ACTIVATE] =
g_signal_new ("activate",
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (PikaPickableChooserClass, activate),
NULL, NULL, NULL,
G_TYPE_NONE, 1,
PIKA_TYPE_OBJECT);
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_TYPE,
g_param_spec_gtype ("pickable-type",
NULL, NULL,
PIKA_TYPE_PICKABLE,
PIKA_PARAM_WRITABLE |
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 |
G_PARAM_EXPLICIT_NOTIFY));
g_object_class_install_property (object_class, PROP_VIEW_SIZE,
g_param_spec_int ("view-size",
NULL, NULL,
1, PIKA_VIEWABLE_MAX_PREVIEW_SIZE,
PIKA_VIEW_SIZE_MEDIUM,
PIKA_PARAM_READWRITE |
G_PARAM_CONSTRUCT));
g_object_class_install_property (object_class, PROP_VIEW_BORDER_WIDTH,
g_param_spec_int ("view-border-width",
NULL, NULL,
0,
PIKA_VIEW_MAX_BORDER_WIDTH,
1,
PIKA_PARAM_READWRITE |
G_PARAM_CONSTRUCT));
}
static void
pika_pickable_chooser_init (PikaPickableChooser *chooser)
{
chooser->priv = pika_pickable_chooser_get_instance_private (chooser);
chooser->priv->view_size = PIKA_VIEW_SIZE_SMALL;
chooser->priv->view_border_width = 1;
chooser->priv->layer_view = NULL;
chooser->priv->channel_view = NULL;
}
static void
pika_pickable_chooser_constructed (GObject *object)
{
PikaPickableChooser *chooser = PIKA_PICKABLE_CHOOSER (object);
GtkWidget *hbox;
GtkWidget *vbox;
GtkWidget *label;
GtkWidget *notebook;
PikaImage *image;
G_OBJECT_CLASS (parent_class)->constructed (object);
pika_assert (PIKA_IS_CONTEXT (chooser->priv->context));
gtk_frame_set_shadow_type (GTK_FRAME (chooser), GTK_SHADOW_OUT);
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
gtk_container_set_border_width (GTK_CONTAINER (hbox), 6);
gtk_container_add (GTK_CONTAINER (chooser), hbox);
gtk_widget_show (hbox);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 4);
gtk_box_pack_start (GTK_BOX (hbox), vbox, TRUE, TRUE, 0);
gtk_widget_show (vbox);
label = gtk_label_new (_("Images"));
gtk_label_set_xalign (GTK_LABEL (label), 0.0);
gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, FALSE, 0);
gtk_widget_show (label);
chooser->priv->image_view =
pika_container_tree_view_new (chooser->priv->context->pika->images,
chooser->priv->context,
chooser->priv->view_size,
chooser->priv->view_border_width);
pika_container_box_set_size_request (PIKA_CONTAINER_BOX (chooser->priv->image_view),
4 * (chooser->priv->view_size +
2 * chooser->priv->view_border_width),
4 * (chooser->priv->view_size +
2 * chooser->priv->view_border_width));
gtk_box_pack_start (GTK_BOX (vbox), chooser->priv->image_view, TRUE, TRUE, 0);
gtk_widget_show (chooser->priv->image_view);
g_signal_connect_object (chooser->priv->image_view, "activate-item",
G_CALLBACK (pika_pickable_chooser_item_activate),
G_OBJECT (chooser), 0);
g_signal_connect_object (chooser->priv->image_view, "select-items",
G_CALLBACK (pika_pickable_chooser_items_selected),
G_OBJECT (chooser), 0);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 4);
gtk_box_pack_start (GTK_BOX (hbox), vbox, TRUE, TRUE, 0);
gtk_widget_show (vbox);
chooser->priv->layer_label = label =
gtk_label_new (_("Select an image in the left pane"));
gtk_label_set_xalign (GTK_LABEL (label), 0.0);
gtk_label_set_ellipsize (GTK_LABEL (label), PANGO_ELLIPSIZE_END);
gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, FALSE, 0);
gtk_widget_show (label);
notebook = gtk_notebook_new ();
gtk_box_pack_start (GTK_BOX (vbox), notebook, TRUE, TRUE, 0);
gtk_widget_show (notebook);
if (g_type_is_a (PIKA_TYPE_LAYER, chooser->priv->pickable_type))
{
chooser->priv->layer_view =
pika_container_tree_view_new (NULL,
chooser->priv->context,
chooser->priv->view_size,
chooser->priv->view_border_width);
gtk_tree_view_set_show_expanders (GTK_TREE_VIEW (PIKA_CONTAINER_TREE_VIEW (chooser->priv->layer_view)->view),
TRUE);
pika_container_box_set_size_request (PIKA_CONTAINER_BOX (chooser->priv->layer_view),
4 * (chooser->priv->view_size +
2 * chooser->priv->view_border_width),
4 * (chooser->priv->view_size +
2 * chooser->priv->view_border_width));
gtk_notebook_append_page (GTK_NOTEBOOK (notebook),
chooser->priv->layer_view,
gtk_label_new (_("Layers")));
gtk_widget_show (chooser->priv->layer_view);
g_signal_connect_object (chooser->priv->layer_view, "activate-item",
G_CALLBACK (pika_pickable_chooser_item_activate),
G_OBJECT (chooser), 0);
g_signal_connect_object (chooser->priv->layer_view, "select-items",
G_CALLBACK (pika_pickable_chooser_items_selected),
G_OBJECT (chooser), 0);
}
if (g_type_is_a (PIKA_TYPE_CHANNEL, chooser->priv->pickable_type))
{
chooser->priv->channel_view =
pika_container_tree_view_new (NULL,
chooser->priv->context,
chooser->priv->view_size,
chooser->priv->view_border_width);
pika_container_box_set_size_request (PIKA_CONTAINER_BOX (chooser->priv->channel_view),
4 * (chooser->priv->view_size +
2 * chooser->priv->view_border_width),
4 * (chooser->priv->view_size +
2 * chooser->priv->view_border_width));
gtk_notebook_append_page (GTK_NOTEBOOK (notebook),
chooser->priv->channel_view,
gtk_label_new (_("Channels")));
gtk_widget_show (chooser->priv->channel_view);
g_signal_connect_object (chooser->priv->channel_view, "activate-item",
G_CALLBACK (pika_pickable_chooser_item_activate),
G_OBJECT (chooser), 0);
g_signal_connect_object (chooser->priv->channel_view, "select-items",
G_CALLBACK (pika_pickable_chooser_items_selected),
G_OBJECT (chooser), 0);
}
g_signal_connect_object (chooser->priv->context, "image-changed",
G_CALLBACK (pika_pickable_chooser_image_changed),
G_OBJECT (chooser), 0);
image = pika_context_get_image (chooser->priv->context);
pika_pickable_chooser_image_changed (chooser->priv->context, image, chooser);
}
static void
pika_pickable_chooser_finalize (GObject *object)
{
PikaPickableChooser *chooser = PIKA_PICKABLE_CHOOSER (object);
g_clear_object (&chooser->priv->pickable);
g_clear_object (&chooser->priv->context);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
pika_pickable_chooser_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
PikaPickableChooser *chooser = PIKA_PICKABLE_CHOOSER (object);
switch (property_id)
{
case PROP_CONTEXT:
if (chooser->priv->context)
g_object_unref (chooser->priv->context);
chooser->priv->context = g_value_dup_object (value);
break;
case PROP_VIEW_SIZE:
chooser->priv->view_size = g_value_get_int (value);
break;
case PROP_VIEW_BORDER_WIDTH:
chooser->priv->view_border_width = g_value_get_int (value);
break;
case PROP_PICKABLE_TYPE:
g_return_if_fail (g_value_get_gtype (value) == PIKA_TYPE_LAYER ||
g_value_get_gtype (value) == PIKA_TYPE_CHANNEL ||
g_value_get_gtype (value) == PIKA_TYPE_DRAWABLE ||
g_value_get_gtype (value) == PIKA_TYPE_IMAGE ||
g_value_get_gtype (value) == PIKA_TYPE_PICKABLE);
chooser->priv->pickable_type = g_value_get_gtype (value);
break;
case PROP_PICKABLE:
g_return_if_fail (g_value_get_object (value) == NULL ||
g_type_is_a (G_TYPE_FROM_INSTANCE (g_value_get_object (value)),
chooser->priv->pickable_type));
pika_pickable_chooser_set_pickable (chooser, g_value_get_object (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
pika_pickable_chooser_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
PikaPickableChooser *chooser = PIKA_PICKABLE_CHOOSER (object);
switch (property_id)
{
case PROP_CONTEXT:
g_value_set_object (value, chooser->priv->context);
break;
case PROP_PICKABLE_TYPE:
g_value_set_gtype (value, chooser->priv->pickable_type);
break;
case PROP_PICKABLE:
g_value_set_object (value, chooser->priv->pickable);
break;
case PROP_VIEW_SIZE:
g_value_set_int (value, chooser->priv->view_size);
break;
case PROP_VIEW_BORDER_WIDTH:
g_value_set_int (value, chooser->priv->view_border_width);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
GtkWidget *
pika_pickable_chooser_new (PikaContext *context,
GType pickable_type,
gint view_size,
gint view_border_width)
{
g_return_val_if_fail (PIKA_IS_CONTEXT (context), NULL);
g_return_val_if_fail (view_size > 0 &&
view_size <= PIKA_VIEWABLE_MAX_POPUP_SIZE, NULL);
g_return_val_if_fail (view_border_width >= 0 &&
view_border_width <= PIKA_VIEW_MAX_BORDER_WIDTH,
NULL);
return g_object_new (PIKA_TYPE_PICKABLE_CHOOSER,
"context", context,
"pickable-type", pickable_type,
"view-size", view_size,
"view-border-width", view_border_width,
NULL);
}
PikaPickable *
pika_pickable_chooser_get_pickable (PikaPickableChooser *chooser)
{
g_return_val_if_fail (PIKA_IS_PICKABLE_CHOOSER (chooser), NULL);
return chooser->priv->pickable;
}
void
pika_pickable_chooser_set_pickable (PikaPickableChooser *chooser,
PikaPickable *pickable)
{
if (! gtk_widget_in_destruction (GTK_WIDGET (chooser)))
{
g_signal_handlers_disconnect_by_func (chooser->priv->image_view,
G_CALLBACK (pika_pickable_chooser_items_selected),
chooser);
if (chooser->priv->layer_view != NULL)
g_signal_handlers_disconnect_by_func (chooser->priv->layer_view,
G_CALLBACK (pika_pickable_chooser_items_selected),
chooser);
else
g_return_if_fail (! PIKA_IS_LAYER (pickable));
if (chooser->priv->channel_view != NULL)
g_signal_handlers_disconnect_by_func (chooser->priv->channel_view,
G_CALLBACK (pika_pickable_chooser_items_selected),
chooser);
else
g_return_if_fail (! PIKA_IS_CHANNEL (pickable));
if (PIKA_IS_IMAGE (pickable))
{
pika_container_view_select_item (PIKA_CONTAINER_VIEW (chooser->priv->image_view),
PIKA_VIEWABLE (pickable));
pika_context_set_image (chooser->priv->context, PIKA_IMAGE (pickable));
}
else if (PIKA_IS_LAYER (pickable))
{
pika_context_set_image (chooser->priv->context, pika_item_get_image (PIKA_ITEM (pickable)));
pika_container_view_select_item (PIKA_CONTAINER_VIEW (chooser->priv->layer_view),
PIKA_VIEWABLE (pickable));
}
else if (PIKA_IS_CHANNEL (pickable))
{
pika_context_set_image (chooser->priv->context, pika_item_get_image (PIKA_ITEM (pickable)));
pika_container_view_select_item (PIKA_CONTAINER_VIEW (chooser->priv->channel_view),
PIKA_VIEWABLE (pickable));
}
else
{
g_return_if_fail (pickable == NULL);
pika_container_view_select_item (PIKA_CONTAINER_VIEW (chooser->priv->image_view), NULL);
pika_context_set_image (chooser->priv->context, NULL);
}
g_signal_connect_object (chooser->priv->image_view, "select-items",
G_CALLBACK (pika_pickable_chooser_items_selected),
G_OBJECT (chooser), 0);
if (chooser->priv->layer_view != NULL)
g_signal_connect_object (chooser->priv->layer_view, "select-items",
G_CALLBACK (pika_pickable_chooser_items_selected),
G_OBJECT (chooser), 0);
if (chooser->priv->channel_view != NULL)
g_signal_connect_object (chooser->priv->channel_view, "select-items",
G_CALLBACK (pika_pickable_chooser_items_selected),
G_OBJECT (chooser), 0);
}
if (pickable != chooser->priv->pickable)
{
g_clear_object (&chooser->priv->pickable);
chooser->priv->pickable = (pickable != NULL ? g_object_ref (pickable) : NULL);
g_object_notify (G_OBJECT (chooser), "pickable");
}
}
/* private functions */
static void
pika_pickable_chooser_image_changed (PikaContext *context,
PikaImage *image,
PikaPickableChooser *chooser)
{
PikaContainer *layers = NULL;
PikaContainer *channels = NULL;
if (image)
{
gchar *desc;
layers = pika_image_get_layers (image);
channels = pika_image_get_channels (image);
desc = pika_viewable_get_description (PIKA_VIEWABLE (image), NULL);
gtk_label_set_text (GTK_LABEL (chooser->priv->layer_label), desc);
g_free (desc);
}
else
{
gtk_label_set_text (GTK_LABEL (chooser->priv->layer_label),
_("Select an image in the left pane"));
}
g_signal_handlers_disconnect_by_func (chooser->priv->image_view,
G_CALLBACK (pika_pickable_chooser_items_selected),
chooser);
if (chooser->priv->layer_view != NULL)
{
g_signal_handlers_disconnect_by_func (chooser->priv->layer_view,
G_CALLBACK (pika_pickable_chooser_items_selected),
chooser);
pika_container_view_set_container (PIKA_CONTAINER_VIEW (chooser->priv->layer_view),
layers);
g_signal_connect_object (chooser->priv->layer_view, "select-items",
G_CALLBACK (pika_pickable_chooser_items_selected),
G_OBJECT (chooser), 0);
}
if (chooser->priv->channel_view != NULL)
{
g_signal_handlers_disconnect_by_func (chooser->priv->channel_view,
G_CALLBACK (pika_pickable_chooser_items_selected),
chooser);
pika_container_view_set_container (PIKA_CONTAINER_VIEW (chooser->priv->channel_view),
channels);
g_signal_connect_object (chooser->priv->channel_view, "select-items",
G_CALLBACK (pika_pickable_chooser_items_selected),
G_OBJECT (chooser), 0);
}
g_signal_connect_object (chooser->priv->image_view, "select-items",
G_CALLBACK (pika_pickable_chooser_items_selected),
G_OBJECT (chooser), 0);
}
static void
pika_pickable_chooser_item_activate (PikaContainerView *view,
PikaPickable *pickable,
gpointer unused,
PikaPickableChooser *chooser)
{
g_signal_emit (chooser, signals[ACTIVATE], 0, pickable);
}
static void
pika_pickable_chooser_items_selected (PikaContainerView *view,
GList *items,
GList *paths,
PikaPickableChooser *chooser)
{
PikaPickable *pickable = NULL;
g_return_if_fail (g_list_length (items) <= 1);
if (items != NULL)
pickable = items->data;
pika_pickable_chooser_set_pickable (chooser, pickable);
}