623 lines
20 KiB
C
623 lines
20 KiB
C
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/* LIBPIKA - The PIKA Library
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* Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
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*
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* This library is free software: you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 3 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <https://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <gegl.h>
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#include <gtk/gtk.h>
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#include "libpikawidgets/pikawidgets.h"
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#include "pika.h"
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#include "pikauitypes.h"
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#include "pikaresourcechooser.h"
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#include "pikauimarshal.h"
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#include "libpika-intl.h"
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/**
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* SECTION: pikaresourcechooser
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* @title: PikaResourceChooser
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* @short_description: Base class for buttons that popup a resource
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* selection dialog.
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*
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* A button which pops up a resource selection dialog.
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*
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* Responsibilities:
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*
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* - implementing outer container widget,
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* - managing clicks and popping up a remote chooser,
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* - having a resource property,
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* - signaling when user selects resource
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* - receiving drag,
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* - triggering draws of the button interior (by subclass) and draws of remote popup chooser.
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*
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* Collaborations:
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*
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* - owned by PikaProcedureDialog via PikaPropWidget
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* - resource property usually bound to a PikaConfig for a PikaPluginProcedure.
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* - communicates using PikaResourceSelect with remote PikaPDBDialog,
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* to choose an installed PikaResource owned by core.
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*
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* Subclass responsibilities:
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*
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* - creating interior widgets
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* - drawing the interior (a preview of the chosen resource)
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* - declaring which interior widgets are drag destinations
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* - declaring which interior widgets are clickable (generate "clicked" signal)
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* - generate "clicked" (delegating to GtkButton or implementing from mouse events)
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*
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* Since: 3.0
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**/
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enum
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{
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RESOURCE_SET,
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LAST_SIGNAL
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};
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enum
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{
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PROP_0,
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PROP_TITLE,
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PROP_LABEL,
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PROP_RESOURCE,
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N_PROPS
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};
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typedef struct
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{
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PikaResource *resource;
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gchar *title;
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gchar *label;
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gchar *callback;
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GtkWidget *label_widget;
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} PikaResourceChooserPrivate;
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/* local function prototypes */
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static void pika_resource_chooser_constructed (GObject *object);
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static void pika_resource_chooser_dispose (GObject *object);
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static void pika_resource_chooser_finalize (GObject *object);
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static void pika_resource_chooser_set_property (GObject *object,
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guint property_id,
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const GValue *value,
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GParamSpec *pspec);
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static void pika_resource_chooser_get_property (GObject *object,
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guint property_id,
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GValue *value,
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GParamSpec *pspec);
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static void pika_resource_chooser_clicked (PikaResourceChooser *self);
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static void pika_resource_chooser_callback (PikaResource *resource,
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gboolean dialog_closing,
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gpointer user_data);
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static void pika_resource_select_drag_data_received (PikaResourceChooser *self,
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GdkDragContext *context,
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gint x,
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gint y,
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GtkSelectionData *selection,
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guint info,
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guint time);
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static void pika_resource_chooser_set_remote_dialog (PikaResourceChooser *self,
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PikaResource *resource);
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static guint resource_button_signals[LAST_SIGNAL] = { 0 };
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static GParamSpec *resource_button_props[N_PROPS] = { NULL, };
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G_DEFINE_ABSTRACT_TYPE_WITH_PRIVATE (PikaResourceChooser, pika_resource_chooser, GTK_TYPE_BOX)
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static void
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pika_resource_chooser_class_init (PikaResourceChooserClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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object_class->constructed = pika_resource_chooser_constructed;
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object_class->dispose = pika_resource_chooser_dispose;
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object_class->finalize = pika_resource_chooser_finalize;
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object_class->set_property = pika_resource_chooser_set_property;
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object_class->get_property = pika_resource_chooser_get_property;
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klass->resource_set = NULL;
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/**
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* PikaResourceChooser:title:
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*
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* The title to be used for the resource selection popup dialog.
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*
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* Since: 3.0
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*/
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resource_button_props[PROP_TITLE] =
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g_param_spec_string ("title",
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"Title",
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"The title to be used for the resource selection popup dialog",
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"Resource Selection",
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PIKA_PARAM_READWRITE |
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G_PARAM_CONSTRUCT_ONLY);
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/**
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* PikaResourceChooser:label:
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*
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* Label text with mnemonic.
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*
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* Since: 3.0
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*/
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resource_button_props[PROP_LABEL] =
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g_param_spec_string ("label",
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"Label",
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"The label to be used next to the button",
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NULL,
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PIKA_PARAM_READWRITE |
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G_PARAM_CONSTRUCT_ONLY);
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/**
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* PikaResourceChooser:resource:
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*
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* The currently selected resource.
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*
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* Since: 3.0
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*/
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resource_button_props[PROP_RESOURCE] =
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pika_param_spec_resource ("resource",
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"Resource",
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"The currently selected resource",
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TRUE, /* none_ok */
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PIKA_PARAM_READWRITE);
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g_object_class_install_properties (object_class,
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N_PROPS, resource_button_props);
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/**
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* PikaResourceChooser::resource-set:
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* @widget: the object which received the signal.
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* @resource: the currently selected resource.
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* @dialog_closing: whether the dialog was closed or not.
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*
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* The ::resource-set signal is emitted when the user selects a resource.
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*
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* Since: 3.0
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*/
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resource_button_signals[RESOURCE_SET] =
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g_signal_new ("resource-set",
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G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_FIRST,
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G_STRUCT_OFFSET (PikaResourceChooserClass, resource_set),
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NULL, NULL,
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_pikaui_marshal_VOID__POINTER_BOOLEAN,
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G_TYPE_NONE, 2,
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G_TYPE_OBJECT,
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G_TYPE_BOOLEAN);
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}
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static void
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pika_resource_chooser_init (PikaResourceChooser *self)
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{
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PikaResourceChooserPrivate *priv;
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priv = pika_resource_chooser_get_instance_private (PIKA_RESOURCE_CHOOSER (self));
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gtk_orientable_set_orientation (GTK_ORIENTABLE (self),
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GTK_ORIENTATION_HORIZONTAL);
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gtk_box_set_spacing (GTK_BOX (self), 6);
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priv->label_widget = gtk_label_new (NULL);
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gtk_box_pack_start (GTK_BOX (self), priv->label_widget, FALSE, FALSE, 0);
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}
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static void
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pika_resource_chooser_constructed (GObject *object)
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{
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PikaResourceChooserPrivate *priv;
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priv = pika_resource_chooser_get_instance_private (PIKA_RESOURCE_CHOOSER (object));
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gtk_label_set_text_with_mnemonic (GTK_LABEL (priv->label_widget), priv->label);
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gtk_widget_show (GTK_WIDGET (priv->label_widget));
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G_OBJECT_CLASS (pika_resource_chooser_parent_class)->constructed (object);
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}
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static void
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pika_resource_chooser_dispose (GObject *self)
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{
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PikaResourceChooserPrivate *priv;
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PikaResourceChooserClass *klass;
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priv = pika_resource_chooser_get_instance_private (PIKA_RESOURCE_CHOOSER (self));
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klass = PIKA_RESOURCE_CHOOSER_GET_CLASS (self);
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if (priv->callback)
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{
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GType resource_type = klass->resource_type;
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if (resource_type == PIKA_TYPE_FONT)
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pika_fonts_close_popup (priv->callback);
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else if (resource_type == PIKA_TYPE_GRADIENT)
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pika_gradients_close_popup (priv->callback);
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else if (resource_type == PIKA_TYPE_BRUSH)
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pika_brushes_close_popup (priv->callback);
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else if (resource_type == PIKA_TYPE_PALETTE)
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pika_palettes_close_popup (priv->callback);
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else if (resource_type == PIKA_TYPE_PATTERN)
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pika_patterns_close_popup (priv->callback);
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else
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g_warning ("%s: unhandled resource type", G_STRFUNC);
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pika_plug_in_remove_temp_procedure (pika_get_plug_in (), priv->callback);
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g_clear_pointer (&priv->callback, g_free);
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}
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G_OBJECT_CLASS (pika_resource_chooser_parent_class)->dispose (self);
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}
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static void
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pika_resource_chooser_finalize (GObject *object)
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{
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PikaResourceChooser *self = PIKA_RESOURCE_CHOOSER (object);
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PikaResourceChooserPrivate *priv = pika_resource_chooser_get_instance_private (self);
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g_clear_pointer (&priv->title, g_free);
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g_clear_pointer (&priv->label, g_free);
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G_OBJECT_CLASS (pika_resource_chooser_parent_class)->finalize (object);
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}
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/**
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* pika_resource_chooser_set_drag_target:
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* @chooser: A [class@ResourceChooser]
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* @drag_region_widget: An interior widget to be a droppable region
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* and emit "drag-data-received" signal
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* @drag_target: The drag target to accept
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*
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* Called by a subclass init to specialize the instance.
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*
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* Subclass knows its interior widget whose region is a drop zone.
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* Subclass knows what things can be dropped (target.)
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* Self (super) handles the drop.
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*
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* Since: 3.0
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**/
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void
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pika_resource_chooser_set_drag_target (PikaResourceChooser *chooser,
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GtkWidget *drag_region_widget,
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const GtkTargetEntry *drag_target)
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{
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g_return_if_fail (PIKA_IS_RESOURCE_CHOOSER (chooser));
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g_return_if_fail (drag_target != NULL);
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g_return_if_fail (drag_region_widget != NULL);
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gtk_drag_dest_set (drag_region_widget,
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GTK_DEST_DEFAULT_HIGHLIGHT |
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GTK_DEST_DEFAULT_MOTION |
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GTK_DEST_DEFAULT_DROP,
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drag_target, 1, /* Pass array of size 1 */
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GDK_ACTION_COPY);
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/* connect drag_region_widget's drag_received signal to chooser's callback. */
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g_signal_connect_swapped (drag_region_widget, "drag-data-received",
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G_CALLBACK (pika_resource_select_drag_data_received),
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chooser);
|
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}
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/**
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* pika_resource_chooser_set_clickable:
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* @chooser: A [class@ResourceChooser]
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* @widget: An interior widget that emits "clicked" signal
|
||
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*
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* Called by a subclass init to specialize the instance.
|
||
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*
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* Subclass knows its interior widget whose region when clicked
|
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* should popup remote chooser.
|
||
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* Self handles the click event.
|
||
|
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*
|
||
|
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* Since: 3.0
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**/
|
||
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void
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pika_resource_chooser_set_clickable (PikaResourceChooser *chooser,
|
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|
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GtkWidget *widget)
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{
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g_return_if_fail (PIKA_IS_RESOURCE_CHOOSER (chooser));
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g_return_if_fail (widget != NULL);
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g_return_if_fail (GTK_IS_WIDGET (widget));
|
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|
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/* Require the widget have a signal "clicked", usually a button. */
|
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g_signal_connect_swapped (widget, "clicked",
|
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|
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G_CALLBACK (pika_resource_chooser_clicked),
|
||
|
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chooser);
|
||
|
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}
|
||
|
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|
||
|
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/**
|
||
|
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* pika_resource_chooser_get_resource:
|
||
|
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* @chooser: A #PikaResourceChooser
|
||
|
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*
|
||
|
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* Gets the currently selected resource.
|
||
|
|
*
|
||
|
|
* Returns: (transfer none): an internal copy of the resource which must not be freed.
|
||
|
|
*
|
||
|
|
* Since: 3.0
|
||
|
|
*/
|
||
|
|
PikaResource *
|
||
|
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pika_resource_chooser_get_resource (PikaResourceChooser *chooser)
|
||
|
|
{
|
||
|
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PikaResourceChooserPrivate *priv;
|
||
|
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|
||
|
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g_return_val_if_fail (PIKA_IS_RESOURCE_CHOOSER (chooser), NULL);
|
||
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|
||
|
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priv = pika_resource_chooser_get_instance_private (chooser);
|
||
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|
||
|
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return priv->resource;
|
||
|
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}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* pika_resource_chooser_set_resource:
|
||
|
|
* @chooser: A #PikaResourceChooser
|
||
|
|
* @resource: Resource to set.
|
||
|
|
*
|
||
|
|
* Sets the currently selected resource.
|
||
|
|
* This will select the resource in both the button and any chooser popup.
|
||
|
|
*
|
||
|
|
* Since: 3.0
|
||
|
|
*/
|
||
|
|
void
|
||
|
|
pika_resource_chooser_set_resource (PikaResourceChooser *chooser,
|
||
|
|
PikaResource *resource)
|
||
|
|
{
|
||
|
|
PikaResourceChooserPrivate *priv;
|
||
|
|
|
||
|
|
g_return_if_fail (PIKA_IS_RESOURCE_CHOOSER (chooser));
|
||
|
|
g_return_if_fail (resource != NULL);
|
||
|
|
|
||
|
|
priv = pika_resource_chooser_get_instance_private (chooser);
|
||
|
|
|
||
|
|
if (priv->callback)
|
||
|
|
{
|
||
|
|
/* A popup chooser dialog is already shown.
|
||
|
|
* Call its setter to change the selection there
|
||
|
|
* (since all views of the resource must be consistent.)
|
||
|
|
* That will call back, which will change our own view of the resource.
|
||
|
|
*/
|
||
|
|
pika_resource_chooser_set_remote_dialog (chooser, resource);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
/* Call our own setter. */
|
||
|
|
pika_resource_chooser_callback (resource, FALSE, chooser);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* pika_resource_chooser_get_label:
|
||
|
|
* @widget: A [class@ResourceChooser].
|
||
|
|
*
|
||
|
|
* Returns the label widget.
|
||
|
|
*
|
||
|
|
* Returns: (transfer none): the [class@Gtk.Widget] showing the label text.
|
||
|
|
* Since: 3.0
|
||
|
|
*/
|
||
|
|
GtkWidget *
|
||
|
|
pika_resource_chooser_get_label (PikaResourceChooser *widget)
|
||
|
|
{
|
||
|
|
PikaResourceChooserPrivate *priv;
|
||
|
|
|
||
|
|
g_return_val_if_fail (PIKA_IS_RESOURCE_CHOOSER (widget), NULL);
|
||
|
|
|
||
|
|
priv = pika_resource_chooser_get_instance_private (widget);
|
||
|
|
return priv->label_widget;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/* private functions */
|
||
|
|
|
||
|
|
static void
|
||
|
|
pika_resource_chooser_set_remote_dialog (PikaResourceChooser *self,
|
||
|
|
PikaResource *resource)
|
||
|
|
{
|
||
|
|
PikaResourceChooserPrivate *priv;
|
||
|
|
PikaResourceChooserClass *klass;
|
||
|
|
|
||
|
|
g_return_if_fail (PIKA_IS_RESOURCE_CHOOSER (self));
|
||
|
|
g_return_if_fail (resource != NULL);
|
||
|
|
|
||
|
|
priv = pika_resource_chooser_get_instance_private (self);
|
||
|
|
klass = PIKA_RESOURCE_CHOOSER_GET_CLASS (self);
|
||
|
|
|
||
|
|
g_return_if_fail (klass->resource_type != G_TYPE_INVALID);
|
||
|
|
g_return_if_fail (klass->resource_type == G_TYPE_FROM_INSTANCE (resource));
|
||
|
|
|
||
|
|
pika_resource_select_set (priv->callback, resource);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
pika_resource_chooser_set_property (GObject *object,
|
||
|
|
guint property_id,
|
||
|
|
const GValue *gvalue,
|
||
|
|
GParamSpec *pspec)
|
||
|
|
{
|
||
|
|
PikaResourceChooser *self = PIKA_RESOURCE_CHOOSER (object);
|
||
|
|
PikaResourceChooserPrivate *priv = pika_resource_chooser_get_instance_private (self);
|
||
|
|
|
||
|
|
switch (property_id)
|
||
|
|
{
|
||
|
|
case PROP_TITLE:
|
||
|
|
priv->title = g_value_dup_string (gvalue);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case PROP_LABEL:
|
||
|
|
priv->label = g_value_dup_string (gvalue);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case PROP_RESOURCE:
|
||
|
|
priv->resource = g_value_get_object (gvalue);
|
||
|
|
break;
|
||
|
|
|
||
|
|
default:
|
||
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
pika_resource_chooser_get_property (GObject *object,
|
||
|
|
guint property_id,
|
||
|
|
GValue *value,
|
||
|
|
GParamSpec *pspec)
|
||
|
|
{
|
||
|
|
PikaResourceChooser *self = PIKA_RESOURCE_CHOOSER (object);
|
||
|
|
PikaResourceChooserPrivate *priv = pika_resource_chooser_get_instance_private (self);
|
||
|
|
|
||
|
|
switch (property_id)
|
||
|
|
{
|
||
|
|
case PROP_TITLE:
|
||
|
|
g_value_set_string (value, priv->title);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case PROP_LABEL:
|
||
|
|
g_value_set_string (value, priv->label);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case PROP_RESOURCE:
|
||
|
|
g_value_set_object (value, priv->resource);
|
||
|
|
break;
|
||
|
|
|
||
|
|
default:
|
||
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* A callback from the remote resource select popup.
|
||
|
|
* When user chooses a resource.
|
||
|
|
* Via a temporary PDB procedure.
|
||
|
|
*
|
||
|
|
* Set self's model (priv->resource)
|
||
|
|
* Notify any parent widget subscribed on the "resource" property
|
||
|
|
* typically a prop widget.
|
||
|
|
* Update the view, since model changed.
|
||
|
|
*/
|
||
|
|
static void
|
||
|
|
pika_resource_chooser_callback (PikaResource *resource,
|
||
|
|
gboolean dialog_closing,
|
||
|
|
gpointer user_data)
|
||
|
|
{
|
||
|
|
PikaResourceChooser *self = PIKA_RESOURCE_CHOOSER (user_data);
|
||
|
|
PikaResourceChooserPrivate *priv = pika_resource_chooser_get_instance_private (self);
|
||
|
|
|
||
|
|
priv->resource = resource;
|
||
|
|
|
||
|
|
PIKA_RESOURCE_CHOOSER_GET_CLASS (self)->draw_interior (self);
|
||
|
|
|
||
|
|
if (dialog_closing)
|
||
|
|
g_clear_pointer (&priv->callback, g_free);
|
||
|
|
|
||
|
|
g_signal_emit (self, resource_button_signals[RESOURCE_SET], 0, resource, dialog_closing);
|
||
|
|
g_object_notify_by_pspec (G_OBJECT (self), resource_button_props[PROP_RESOURCE]);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
pika_resource_chooser_clicked (PikaResourceChooser *self)
|
||
|
|
{
|
||
|
|
PikaResourceChooserPrivate *priv = pika_resource_chooser_get_instance_private (self);
|
||
|
|
PikaResourceChooserClass *klass = PIKA_RESOURCE_CHOOSER_GET_CLASS (self);
|
||
|
|
|
||
|
|
if (priv->callback)
|
||
|
|
{
|
||
|
|
/* Popup already created. Calling setter raises the popup. */
|
||
|
|
pika_resource_chooser_set_remote_dialog (self, priv->resource);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (self));
|
||
|
|
GBytes *handle = NULL;
|
||
|
|
|
||
|
|
if (PIKA_IS_DIALOG (toplevel))
|
||
|
|
handle = pika_dialog_get_native_handle (PIKA_DIALOG (toplevel));
|
||
|
|
|
||
|
|
priv->callback = g_strdup (pika_resource_select_new (priv->title,
|
||
|
|
handle,
|
||
|
|
priv->resource,
|
||
|
|
klass->resource_type,
|
||
|
|
pika_resource_chooser_callback,
|
||
|
|
self,
|
||
|
|
NULL));
|
||
|
|
pika_resource_chooser_set_remote_dialog (self, priv->resource);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/* Drag methods. */
|
||
|
|
|
||
|
|
static void
|
||
|
|
pika_resource_select_drag_data_received (PikaResourceChooser *self,
|
||
|
|
GdkDragContext *context,
|
||
|
|
gint x,
|
||
|
|
gint y,
|
||
|
|
GtkSelectionData *selection,
|
||
|
|
guint info,
|
||
|
|
guint time)
|
||
|
|
{
|
||
|
|
gint length = gtk_selection_data_get_length (selection);
|
||
|
|
gchar *str;
|
||
|
|
|
||
|
|
PikaResourceChooserClass *klass;
|
||
|
|
|
||
|
|
klass = PIKA_RESOURCE_CHOOSER_GET_CLASS (self);
|
||
|
|
/* Require class resource_type was initialized. */
|
||
|
|
g_assert (klass->resource_type != 0);
|
||
|
|
|
||
|
|
/* Drag data is a string that is the ID of the resource. */
|
||
|
|
|
||
|
|
if (gtk_selection_data_get_format (selection) != 8 || length < 1)
|
||
|
|
{
|
||
|
|
g_warning ("%s: received invalid resource data", G_STRFUNC);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
str = g_strndup ((const gchar *) gtk_selection_data_get_data (selection),
|
||
|
|
length);
|
||
|
|
|
||
|
|
if (g_utf8_validate (str, -1, NULL))
|
||
|
|
{
|
||
|
|
gint pid;
|
||
|
|
gpointer unused;
|
||
|
|
gint name_offset = 0;
|
||
|
|
|
||
|
|
if (sscanf (str, "%i:%p:%n", &pid, &unused, &name_offset) >= 2 &&
|
||
|
|
pid == pika_getpid () && name_offset > 0)
|
||
|
|
{
|
||
|
|
gchar *name = str + name_offset;
|
||
|
|
PikaResource *resource;
|
||
|
|
|
||
|
|
resource = pika_resource_get_by_name (klass->resource_type, name);
|
||
|
|
pika_resource_chooser_set_resource (self, resource);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
g_free (str);
|
||
|
|
}
|
