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-rw-r--r--app/widgets/gimppickablebutton.c343
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diff --git a/app/widgets/gimppickablebutton.c b/app/widgets/gimppickablebutton.c
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+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimppickablebutton.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 "libgimpwidgets/gimpwidgets.h"
+
+#include "widgets-types.h"
+
+#include "core/gimpcontext.h"
+#include "core/gimpimage.h"
+#include "core/gimplayer.h"
+#include "core/gimplayermask.h"
+#include "core/gimppickable.h"
+
+#include "gimpdnd.h"
+#include "gimpview.h"
+#include "gimpviewrenderer.h"
+#include "gimppickablebutton.h"
+#include "gimppickablepopup.h"
+
+
+enum
+{
+ PROP_0,
+ PROP_CONTEXT,
+ PROP_PICKABLE
+};
+
+struct _GimpPickableButtonPrivate
+{
+ gint view_size;
+ gint view_border_width;
+
+ GimpContext *context;
+ GimpPickable *pickable;
+
+ GtkWidget *view;
+};
+
+
+static void gimp_pickable_button_constructed (GObject *object);
+static void gimp_pickable_button_dispose (GObject *object);
+static void gimp_pickable_button_finalize (GObject *object);
+static void gimp_pickable_button_set_property (GObject *object,
+ guint property_id,
+ const GValue *value,
+ GParamSpec *pspec);
+static void gimp_pickable_button_get_property (GObject *object,
+ guint property_id,
+ GValue *value,
+ GParamSpec *pspec);
+
+static void gimp_pickable_button_clicked (GtkButton *button);
+
+static void gimp_pickable_button_popup_confirm (GimpPickablePopup *popup,
+ GimpPickableButton *button);
+static void gimp_pickable_button_drop_pickable (GtkWidget *widget,
+ gint x,
+ gint y,
+ GimpViewable *viewable,
+ gpointer data);
+static void gimp_pickable_button_notify_buffer (GimpPickable *pickable,
+ const GParamSpec *pspec,
+ GimpPickableButton *button);
+
+
+G_DEFINE_TYPE_WITH_PRIVATE (GimpPickableButton, gimp_pickable_button,
+ GIMP_TYPE_BUTTON)
+
+#define parent_class gimp_pickable_button_parent_class
+
+
+static void
+gimp_pickable_button_class_init (GimpPickableButtonClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+ GtkButtonClass *button_class = GTK_BUTTON_CLASS (klass);
+
+ object_class->constructed = gimp_pickable_button_constructed;
+ object_class->dispose = gimp_pickable_button_dispose;
+ object_class->finalize = gimp_pickable_button_finalize;
+ object_class->get_property = gimp_pickable_button_get_property;
+ object_class->set_property = gimp_pickable_button_set_property;
+
+ button_class->clicked = gimp_pickable_button_clicked;
+
+ g_object_class_install_property (object_class, PROP_CONTEXT,
+ g_param_spec_object ("context",
+ NULL, NULL,
+ GIMP_TYPE_CONTEXT,
+ GIMP_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT_ONLY));
+
+ g_object_class_install_property (object_class, PROP_PICKABLE,
+ g_param_spec_object ("pickable",
+ NULL, NULL,
+ GIMP_TYPE_PICKABLE,
+ GIMP_PARAM_READWRITE));
+}
+
+static void
+gimp_pickable_button_init (GimpPickableButton *button)
+{
+ button->private = gimp_pickable_button_get_instance_private (button);
+
+ button->private->view_size = GIMP_VIEW_SIZE_LARGE;
+ button->private->view_border_width = 1;
+
+ gimp_dnd_viewable_dest_add (GTK_WIDGET (button), GIMP_TYPE_LAYER,
+ gimp_pickable_button_drop_pickable,
+ NULL);
+ gimp_dnd_viewable_dest_add (GTK_WIDGET (button), GIMP_TYPE_LAYER_MASK,
+ gimp_pickable_button_drop_pickable,
+ NULL);
+ gimp_dnd_viewable_dest_add (GTK_WIDGET (button), GIMP_TYPE_CHANNEL,
+ gimp_pickable_button_drop_pickable,
+ NULL);
+ gimp_dnd_viewable_dest_add (GTK_WIDGET (button), GIMP_TYPE_IMAGE,
+ gimp_pickable_button_drop_pickable,
+ NULL);
+}
+
+static void
+gimp_pickable_button_constructed (GObject *object)
+{
+ GimpPickableButton *button = GIMP_PICKABLE_BUTTON (object);
+
+ G_OBJECT_CLASS (parent_class)->constructed (object);
+
+ gimp_assert (GIMP_IS_CONTEXT (button->private->context));
+
+ button->private->view =
+ gimp_view_new_by_types (button->private->context,
+ GIMP_TYPE_VIEW,
+ GIMP_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
+gimp_pickable_button_dispose (GObject *object)
+{
+ GimpPickableButton *button = GIMP_PICKABLE_BUTTON (object);
+
+ gimp_pickable_button_set_pickable (button, NULL);
+
+ G_OBJECT_CLASS (parent_class)->dispose (object);
+}
+
+static void
+gimp_pickable_button_finalize (GObject *object)
+{
+ GimpPickableButton *button = GIMP_PICKABLE_BUTTON (object);
+
+ g_clear_object (&button->private->context);
+
+ G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static void
+gimp_pickable_button_set_property (GObject *object,
+ guint property_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ GimpPickableButton *button = GIMP_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:
+ gimp_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
+gimp_pickable_button_get_property (GObject *object,
+ guint property_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ GimpPickableButton *button = GIMP_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
+gimp_pickable_button_clicked (GtkButton *button)
+{
+ GimpPickableButton *pickable_button = GIMP_PICKABLE_BUTTON (button);
+ GtkWidget *popup;
+
+ popup = gimp_pickable_popup_new (pickable_button->private->context,
+ pickable_button->private->view_size,
+ pickable_button->private->view_border_width);
+
+ g_signal_connect (popup, "confirm",
+ G_CALLBACK (gimp_pickable_button_popup_confirm),
+ button);
+
+ gimp_popup_show (GIMP_POPUP (popup), GTK_WIDGET (button));
+}
+
+static void
+gimp_pickable_button_popup_confirm (GimpPickablePopup *popup,
+ GimpPickableButton *button)
+{
+ GimpPickable *pickable = gimp_pickable_popup_get_pickable (popup);
+
+ if (pickable)
+ gimp_pickable_button_set_pickable (button, pickable);
+}
+
+static void
+gimp_pickable_button_drop_pickable (GtkWidget *widget,
+ gint x,
+ gint y,
+ GimpViewable *viewable,
+ gpointer data)
+{
+ gimp_pickable_button_set_pickable (GIMP_PICKABLE_BUTTON (widget),
+ GIMP_PICKABLE (viewable));
+}
+
+static void
+gimp_pickable_button_notify_buffer (GimpPickable *pickable,
+ const GParamSpec *pspec,
+ GimpPickableButton *button)
+{
+ GeglBuffer *buffer = gimp_pickable_get_buffer (pickable);
+
+ if (buffer)
+ g_object_notify (G_OBJECT (button), "pickable");
+ else
+ gimp_pickable_button_set_pickable (button, NULL);
+}
+
+
+/* public functions */
+
+GtkWidget *
+gimp_pickable_button_new (GimpContext *context,
+ gint view_size,
+ gint view_border_width)
+{
+ GimpPickableButton *button;
+
+ g_return_val_if_fail (GIMP_IS_CONTEXT (context), NULL);
+ g_return_val_if_fail (view_size > 0 &&
+ view_size <= GIMP_VIEWABLE_MAX_BUTTON_SIZE, NULL);
+ g_return_val_if_fail (view_border_width >= 0 &&
+ view_border_width <= GIMP_VIEW_MAX_BORDER_WIDTH,
+ NULL);
+
+ button = g_object_new (GIMP_TYPE_PICKABLE_BUTTON,
+ "context", context,
+ NULL);
+
+ button->private->view_size = view_size;
+ button->private->view_border_width = view_border_width;
+
+ return GTK_WIDGET (button);
+}
+
+GimpPickable *
+gimp_pickable_button_get_pickable (GimpPickableButton *button)
+{
+ g_return_val_if_fail (GIMP_IS_PICKABLE_BUTTON (button), NULL);
+
+ return button->private->pickable;
+}
+
+void
+gimp_pickable_button_set_pickable (GimpPickableButton *button,
+ GimpPickable *pickable)
+{
+ g_return_if_fail (GIMP_IS_PICKABLE_BUTTON (button));
+
+ if (pickable != button->private->pickable)
+ {
+ if (button->private->pickable)
+ g_signal_handlers_disconnect_by_func (button->private->pickable,
+ gimp_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 (gimp_pickable_button_notify_buffer),
+ button);
+
+ gimp_view_set_viewable (GIMP_VIEW (button->private->view),
+ GIMP_VIEWABLE (pickable));
+
+ g_object_notify (G_OBJECT (button), "pickable");
+ }
+}
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