292 lines
9.8 KiB
C
292 lines
9.8 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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* pikalabelstringwidget.c
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* Copyright (C) 2023 Jehan
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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 "libpikacolor/pikacolor.h"
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#include "libpikamath/pikamath.h"
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#include "libpikabase/pikabase.h"
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#include "pikalabelstringwidget.h"
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/**
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* SECTION: pikalabelstringwidget
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* @title: PikaLabelStringWidget
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* @short_description: Widget containing a label and a widget with a
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* string "value" property.
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*
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* This widget is a subclass of #PikaLabeled.
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**/
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enum
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{
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VALUE_CHANGED,
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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_VALUE,
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PROP_WIDGET,
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};
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typedef struct _PikaLabelStringWidgetPrivate
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{
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PikaLabeled parent_instance;
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GtkWidget *widget;
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gchar *value;
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} PikaLabelStringWidgetPrivate;
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static void pika_label_string_widget_constructed (GObject *object);
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static void pika_label_string_widget_finalize (GObject *object);
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static void pika_label_string_widget_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_label_string_widget_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 GtkWidget * pika_label_string_widget_populate (PikaLabeled *widget,
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gint *x,
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gint *y,
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gint *width,
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gint *height);
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G_DEFINE_TYPE_WITH_PRIVATE (PikaLabelStringWidget, pika_label_string_widget, PIKA_TYPE_LABELED)
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#define parent_class pika_label_string_widget_parent_class
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static guint pika_label_string_widget_signals[LAST_SIGNAL] = { 0 };
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static void
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pika_label_string_widget_class_init (PikaLabelStringWidgetClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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PikaLabeledClass *labeled_class = PIKA_LABELED_CLASS (klass);
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pika_label_string_widget_signals[VALUE_CHANGED] =
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g_signal_new ("value-changed",
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G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_FIRST,
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G_STRUCT_OFFSET (PikaLabelStringWidgetClass, value_changed),
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NULL, NULL, NULL,
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G_TYPE_NONE, 0);
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object_class->constructed = pika_label_string_widget_constructed;
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object_class->finalize = pika_label_string_widget_finalize;
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object_class->set_property = pika_label_string_widget_set_property;
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object_class->get_property = pika_label_string_widget_get_property;
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labeled_class->populate = pika_label_string_widget_populate;
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/**
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* PikaLabelStringWidget:value:
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*
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* The currently set value.
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*
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* Since: 3.0
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**/
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g_object_class_install_property (object_class, PROP_VALUE,
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g_param_spec_string ("value", NULL,
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"Current value",
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NULL,
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PIKA_PARAM_READWRITE));
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/**
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* PikaLabelStringWidget:widget:
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*
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* The widget holding a string property named "value".
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*
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* Since: 3.0
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**/
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g_object_class_install_property (object_class, PROP_WIDGET,
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g_param_spec_object ("widget", NULL,
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"String widget",
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GTK_TYPE_WIDGET,
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PIKA_PARAM_READWRITE |
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G_PARAM_CONSTRUCT_ONLY));
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}
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static void
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pika_label_string_widget_init (PikaLabelStringWidget *widget)
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{
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}
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static void
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pika_label_string_widget_constructed (GObject *object)
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{
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PikaLabelStringWidget *widget = PIKA_LABEL_STRING_WIDGET (object);
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PikaLabelStringWidgetPrivate *priv = pika_label_string_widget_get_instance_private (widget);
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G_OBJECT_CLASS (parent_class)->constructed (object);
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gtk_grid_set_column_spacing (GTK_GRID (widget), 6);
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gtk_grid_set_row_spacing (GTK_GRID (widget), 6);
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/* This is important to make this object into a property widget. It
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* will allow config object to bind the "value" property of this
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* widget, and therefore be updated automatically.
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*/
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g_object_bind_property (G_OBJECT (priv->widget), "value",
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object, "value",
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G_BINDING_BIDIRECTIONAL |
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G_BINDING_SYNC_CREATE);
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}
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static void
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pika_label_string_widget_finalize (GObject *object)
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{
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PikaLabelStringWidget *widget = PIKA_LABEL_STRING_WIDGET (object);
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PikaLabelStringWidgetPrivate *priv = pika_label_string_widget_get_instance_private (widget);
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g_free (priv->value);
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static void
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pika_label_string_widget_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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{
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PikaLabelStringWidget *widget = PIKA_LABEL_STRING_WIDGET (object);
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PikaLabelStringWidgetPrivate *priv = pika_label_string_widget_get_instance_private (widget);
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switch (property_id)
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{
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case PROP_VALUE:
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if (g_strcmp0 (priv->value, g_value_get_string (value)) != 0)
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{
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g_free (priv->value);
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priv->value = g_value_dup_string (value);
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g_signal_emit (object, pika_label_string_widget_signals[VALUE_CHANGED], 0);
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}
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break;
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case PROP_WIDGET:
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priv->widget = g_value_get_object (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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static void
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pika_label_string_widget_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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{
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PikaLabelStringWidget *widget = PIKA_LABEL_STRING_WIDGET (object);
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PikaLabelStringWidgetPrivate *priv = pika_label_string_widget_get_instance_private (widget);
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switch (property_id)
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{
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case PROP_VALUE:
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g_value_set_string (value, priv->value);
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break;
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case PROP_WIDGET:
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g_value_set_object (value, priv->widget);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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static GtkWidget *
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pika_label_string_widget_populate (PikaLabeled *labeled,
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gint *x,
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gint *y,
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gint *width,
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gint *height)
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{
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PikaLabelStringWidget *widget = PIKA_LABEL_STRING_WIDGET (labeled);
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PikaLabelStringWidgetPrivate *priv = pika_label_string_widget_get_instance_private (widget);
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gtk_grid_attach (GTK_GRID (widget), priv->widget, 1, 0, 1, 1);
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gtk_widget_show (priv->widget);
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return priv->widget;
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}
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/* Public Functions */
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/**
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* pika_label_string_widget_new:
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* @text: The text for the #GtkLabel.
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* @widget: (transfer full): The #GtkWidget to use.
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*
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* Creates a new #PikaLabelStringWidget whose "value" property is bound to
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* that of @widget (which must therefore have such a string property).
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*
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* Returns: (transfer full): The new #PikaLabelStringWidget widget.
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**/
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GtkWidget *
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pika_label_string_widget_new (const gchar *text,
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GtkWidget *widget)
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{
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GtkWidget *string_widget;
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GParamSpec *pspec;
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g_return_val_if_fail ((pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (widget),
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"value")) &&
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(G_PARAM_SPEC_TYPE (pspec) == G_TYPE_PARAM_STRING ||
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G_PARAM_SPEC_TYPE (pspec) == PIKA_TYPE_PARAM_CHOICE),
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NULL);
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string_widget = g_object_new (PIKA_TYPE_LABEL_STRING_WIDGET,
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"label", text,
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"widget", widget,
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NULL);
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return string_widget;
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}
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/**
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* pika_label_string_widget_get_widget:
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* @widget: the #PikaLabelStringWidget.
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*
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* Returns: (transfer none): The new #GtkWidget packed next to the label.
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**/
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GtkWidget *
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pika_label_string_widget_get_widget (PikaLabelStringWidget *widget)
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{
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PikaLabelStringWidgetPrivate *priv;
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g_return_val_if_fail (PIKA_IS_LABEL_STRING_WIDGET (widget), NULL);
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priv = pika_label_string_widget_get_instance_private (widget);
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return priv->widget;
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}
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