501 lines
16 KiB
C
501 lines
16 KiB
C
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/* PIKA - Photo and Image Kooker Application
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* a rebranding of The GNU Image Manipulation Program (created with heckimp)
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* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
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*
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* Original copyright, applying to most contents (license remains unchanged):
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* pikashortcutbutton.c
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* Copyright (C) 2022 Jehan
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <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 "libpikabase/pikabase.h"
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#include "libpikawidgets/pikawidgets.h"
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#include "widgets-types.h"
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#include "pikashortcutbutton.h"
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#include "pika-intl.h"
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enum
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{
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ACCELERATOR_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_ACCELERATOR
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};
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struct _PikaShortcutButtonPrivate
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{
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guint keyval;
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GdkModifierType modifiers;
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GtkWidget *stack;
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gboolean modifier_only_accepted;
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gboolean single_modifier;
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guint timer;
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guint last_keyval;
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GdkModifierType last_modifiers;
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};
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static void pika_shortcut_button_constructed (GObject *object);
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static void pika_shortcut_button_finalize (GObject *object);
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static void pika_shortcut_button_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_shortcut_button_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 gboolean pika_shortcut_button_key_press_event (GtkWidget *button,
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GdkEventKey *event,
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gpointer user_data);
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static gboolean pika_shortcut_button_focus_out_event (PikaShortcutButton *button,
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GdkEventFocus event,
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gpointer user_data);
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static void pika_shortcut_button_toggled (PikaShortcutButton *button,
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gpointer user_data);
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static void pika_shortcut_button_update_label (PikaShortcutButton *button);
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static gboolean pika_shortcut_button_timeout (PikaShortcutButton *button);
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static void pika_shortcut_button_keyval_to_modifiers (guint keyval,
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GdkModifierType *modifiers);
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G_DEFINE_TYPE_WITH_PRIVATE (PikaShortcutButton, pika_shortcut_button, GTK_TYPE_TOGGLE_BUTTON)
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#define parent_class pika_shortcut_button_parent_class
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static guint signals[LAST_SIGNAL] = { 0 };
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static void
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pika_shortcut_button_class_init (PikaShortcutButtonClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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object_class->constructed = pika_shortcut_button_constructed;
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object_class->finalize = pika_shortcut_button_finalize;
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object_class->get_property = pika_shortcut_button_get_property;
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object_class->set_property = pika_shortcut_button_set_property;
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g_object_class_install_property (object_class, PROP_ACCELERATOR,
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g_param_spec_string ("accelerator",
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NULL, NULL, NULL,
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PIKA_PARAM_READWRITE |
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G_PARAM_EXPLICIT_NOTIFY));
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signals[ACCELERATOR_CHANGED] = g_signal_new ("accelerator-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 (PikaShortcutButtonClass, accelerator_changed),
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NULL, NULL, NULL,
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G_TYPE_NONE, 1,
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G_TYPE_STRING);
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klass->accelerator_changed = NULL;
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}
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static void
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pika_shortcut_button_init (PikaShortcutButton *button)
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{
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GtkWidget *label;
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button->priv = pika_shortcut_button_get_instance_private (button);
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button->priv->timer = 0;
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button->priv->stack = gtk_stack_new ();
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gtk_container_add (GTK_CONTAINER (button), button->priv->stack);
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gtk_widget_show (button->priv->stack);
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label = gtk_shortcut_label_new (NULL);
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gtk_stack_add_named (GTK_STACK (button->priv->stack), label,
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"shortcut-label");
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gtk_widget_show (label);
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label = gtk_label_new (_("No shortcut"));
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gtk_stack_add_named (GTK_STACK (button->priv->stack), label,
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"label");
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gtk_widget_show (label);
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}
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static void
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pika_shortcut_button_constructed (GObject *object)
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{
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G_OBJECT_CLASS (parent_class)->constructed (object);
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g_signal_connect (object, "key-press-event",
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G_CALLBACK (pika_shortcut_button_key_press_event),
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NULL);
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g_signal_connect (object, "focus-out-event",
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G_CALLBACK (pika_shortcut_button_focus_out_event),
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NULL);
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g_signal_connect (object, "toggled",
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G_CALLBACK (pika_shortcut_button_toggled),
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NULL);
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pika_shortcut_button_toggled (PIKA_SHORTCUT_BUTTON (object), NULL);
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}
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static void
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pika_shortcut_button_finalize (GObject *object)
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{
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PikaShortcutButton *button = PIKA_SHORTCUT_BUTTON (object);
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G_OBJECT_CLASS (parent_class)->finalize (object);
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if (button->priv->timer != 0)
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{
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g_source_remove (button->priv->timer);
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button->priv->timer = 0;
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}
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}
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static void
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pika_shortcut_button_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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PikaShortcutButton *button = PIKA_SHORTCUT_BUTTON (object);
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switch (property_id)
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{
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case PROP_ACCELERATOR:
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pika_shortcut_button_set_accelerator (button, g_value_get_string (value), 0, 0);
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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_shortcut_button_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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PikaShortcutButton *button = PIKA_SHORTCUT_BUTTON (object);
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switch (property_id)
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{
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case PROP_ACCELERATOR:
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{
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gchar *name = gtk_accelerator_name (button->priv->keyval, button->priv->modifiers);
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g_value_set_string (value, gtk_accelerator_name (button->priv->keyval, button->priv->modifiers));
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g_free (name);
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}
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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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/* public functions */
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GtkWidget *
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pika_shortcut_button_new (const gchar *accelerator)
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{
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PikaShortcutButton *button;
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button = g_object_new (PIKA_TYPE_SHORTCUT_BUTTON,
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"accelerator", accelerator,
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NULL);
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return GTK_WIDGET (button);
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}
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gchar *
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pika_shortcut_button_get_accelerator (PikaShortcutButton *button)
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{
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g_return_val_if_fail (PIKA_IS_SHORTCUT_BUTTON (button), NULL);
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return gtk_accelerator_name (button->priv->keyval, button->priv->modifiers);
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}
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void
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pika_shortcut_button_get_keys (PikaShortcutButton *button,
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guint *keyval,
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GdkModifierType *modifiers)
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{
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g_return_if_fail (PIKA_IS_SHORTCUT_BUTTON (button));
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if (keyval)
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*keyval = button->priv->keyval;
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if (modifiers)
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*modifiers = button->priv->modifiers;
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}
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void
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pika_shortcut_button_set_accelerator (PikaShortcutButton *button,
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const gchar *accelerator,
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guint keyval,
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GdkModifierType modifiers)
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{
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g_return_if_fail (PIKA_IS_SHORTCUT_BUTTON (button));
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if (accelerator)
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gtk_accelerator_parse (accelerator, &keyval, &modifiers);
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if (button->priv->modifier_only_accepted && keyval != 0)
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{
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if (button->priv->single_modifier)
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modifiers = 0;
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pika_shortcut_button_keyval_to_modifiers (keyval, &modifiers);
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keyval = 0;
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}
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if (keyval != button->priv->keyval || modifiers != button->priv->modifiers)
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{
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GtkWidget *label;
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gchar *previous_accel;
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gchar *accel;
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previous_accel = gtk_accelerator_name (button->priv->keyval, button->priv->modifiers);
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button->priv->keyval = keyval;
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button->priv->modifiers = modifiers;
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label = gtk_stack_get_child_by_name (GTK_STACK (button->priv->stack),
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"shortcut-label");
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accel = gtk_accelerator_name (keyval, modifiers);
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gtk_shortcut_label_set_accelerator (GTK_SHORTCUT_LABEL (label), accel);
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g_free (accel);
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g_object_notify (G_OBJECT (button), "accelerator");
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g_signal_emit (button, signals[ACCELERATOR_CHANGED], 0,
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previous_accel);
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g_free (previous_accel);
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gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button), keyval != 0 || modifiers == 0);
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pika_shortcut_button_toggled (PIKA_SHORTCUT_BUTTON (button), NULL);
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}
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}
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/**
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* pika_shortcut_button_accepts_modifier:
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* @accepted: are shortcuts with only modifiers accepted?
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* @unique: if @only and @unique are both %TRUE, then the button will
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* grab a single modifier
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*
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* By default, the shortcut button will accept shortcuts such as `a` or
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* `Ctrl-a` or `Shift-Ctrl-a`. A modifier-only shortcut such as `Ctrl`
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* will not be recorded.
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* If @accepted is %TRUE, then it is the opposite. In such case, 2 cases
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* are possible: if @unique is %FALSE, then single modifiers are
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* recorded, such as `Ctrl` or `Shift`, but not `Ctrl-Shift`; if @unique
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* is %FALSE, it may record both `Ctrl` and `Ctrl-Shift` or any modifier
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* combination.
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*/
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void
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pika_shortcut_button_accepts_modifier (PikaShortcutButton *button,
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gboolean accepted,
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gboolean unique)
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{
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g_return_if_fail (PIKA_IS_SHORTCUT_BUTTON (button));
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button->priv->modifier_only_accepted = accepted;
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button->priv->single_modifier = unique;
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pika_shortcut_button_update_label (button);
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}
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/* Private functions. */
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static gboolean
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pika_shortcut_button_key_press_event (GtkWidget *widget,
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GdkEventKey *event,
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gpointer user_data)
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{
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PikaShortcutButton *button = PIKA_SHORTCUT_BUTTON (widget);
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if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (button)))
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{
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GdkModifierType accel_mods = 0;
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accel_mods = event->state;
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accel_mods &= gtk_accelerator_get_default_mod_mask ();
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if (button->priv->modifier_only_accepted)
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{
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if (button->priv->single_modifier)
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{
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if (event->is_modifier)
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{
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pika_shortcut_button_set_accelerator (button, NULL, event->keyval, 0);
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gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button), FALSE);
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}
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}
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else
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{
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button->priv->last_keyval = event->keyval;
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button->priv->last_modifiers = accel_mods;
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if ((event->is_modifier || accel_mods != 0) && button->priv->timer == 0)
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{
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button->priv->timer = g_timeout_add (250,
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(GSourceFunc) pika_shortcut_button_timeout,
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button);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else if (! event->is_modifier)
|
||
|
|
{
|
||
|
|
pika_shortcut_button_set_accelerator (button, NULL, event->keyval, event->state);
|
||
|
|
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button), FALSE);
|
||
|
|
}
|
||
|
|
return TRUE;
|
||
|
|
}
|
||
|
|
return FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
static gboolean
|
||
|
|
pika_shortcut_button_focus_out_event (PikaShortcutButton* button,
|
||
|
|
GdkEventFocus event,
|
||
|
|
gpointer user_data)
|
||
|
|
{
|
||
|
|
/* On losing focus, we untoggle, so we don't have to grab anything.
|
||
|
|
* Let's avoid cases with several shortcut buttons all grabing the
|
||
|
|
* same shortcuts for instance.
|
||
|
|
*/
|
||
|
|
if (button->priv->timer != 0)
|
||
|
|
{
|
||
|
|
g_source_remove (button->priv->timer);
|
||
|
|
button->priv->timer = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button), FALSE);
|
||
|
|
|
||
|
|
/* Propagate event further. */
|
||
|
|
return FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
pika_shortcut_button_toggled (PikaShortcutButton* button,
|
||
|
|
gpointer user_data)
|
||
|
|
{
|
||
|
|
pika_shortcut_button_update_label (button);
|
||
|
|
|
||
|
|
if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (button)) ||
|
||
|
|
(button->priv->keyval == 0 && button->priv->modifiers == 0))
|
||
|
|
gtk_stack_set_visible_child_name (GTK_STACK (button->priv->stack), "label");
|
||
|
|
else
|
||
|
|
gtk_stack_set_visible_child_name (GTK_STACK (button->priv->stack), "shortcut-label");
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
pika_shortcut_button_update_label (PikaShortcutButton *button)
|
||
|
|
{
|
||
|
|
GtkWidget *label;
|
||
|
|
gchar *markup;
|
||
|
|
|
||
|
|
g_return_if_fail (PIKA_IS_SHORTCUT_BUTTON (button));
|
||
|
|
|
||
|
|
label = gtk_stack_get_child_by_name (GTK_STACK (button->priv->stack),
|
||
|
|
"label");
|
||
|
|
|
||
|
|
if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (button)))
|
||
|
|
{
|
||
|
|
if (button->priv->modifier_only_accepted)
|
||
|
|
markup = g_strdup_printf ("<b>%s</b>", _("Set modifier"));
|
||
|
|
else
|
||
|
|
markup = g_strdup_printf ("<b>%s</b>", _("Set shortcut"));
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
if (button->priv->modifier_only_accepted)
|
||
|
|
markup = g_strdup_printf ("<i>%s</i>", _("No modifier"));
|
||
|
|
else
|
||
|
|
markup = g_strdup_printf ("<i>%s</i>", _("No shortcut"));
|
||
|
|
}
|
||
|
|
gtk_label_set_markup (GTK_LABEL (label), markup);
|
||
|
|
g_free (markup);
|
||
|
|
}
|
||
|
|
|
||
|
|
static gboolean
|
||
|
|
pika_shortcut_button_timeout (PikaShortcutButton *button)
|
||
|
|
{
|
||
|
|
pika_shortcut_button_set_accelerator (button, NULL,
|
||
|
|
button->priv->last_keyval,
|
||
|
|
button->priv->last_modifiers);
|
||
|
|
|
||
|
|
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button), FALSE);
|
||
|
|
|
||
|
|
button->priv->timer = 0;
|
||
|
|
|
||
|
|
return G_SOURCE_REMOVE;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
pika_shortcut_button_keyval_to_modifiers (guint keyval,
|
||
|
|
GdkModifierType *modifiers)
|
||
|
|
{
|
||
|
|
/* XXX I believe that more keysyms are considered modifiers, but let's
|
||
|
|
* start with this. This basic list is basically taken from GDK code
|
||
|
|
* in gdk/quartz/gdkevents-quartz.c file.
|
||
|
|
*/
|
||
|
|
GdkModifierType mask = 0;
|
||
|
|
|
||
|
|
switch (keyval)
|
||
|
|
{
|
||
|
|
case GDK_KEY_Meta_R:
|
||
|
|
case GDK_KEY_Meta_L:
|
||
|
|
mask = GDK_MOD2_MASK;
|
||
|
|
break;
|
||
|
|
case GDK_KEY_Shift_R:
|
||
|
|
case GDK_KEY_Shift_L:
|
||
|
|
mask = GDK_SHIFT_MASK;
|
||
|
|
break;
|
||
|
|
case GDK_KEY_Caps_Lock:
|
||
|
|
mask = GDK_LOCK_MASK;
|
||
|
|
break;
|
||
|
|
case GDK_KEY_Alt_R:
|
||
|
|
case GDK_KEY_Alt_L:
|
||
|
|
mask = GDK_MOD1_MASK;
|
||
|
|
break;
|
||
|
|
case GDK_KEY_Control_R:
|
||
|
|
case GDK_KEY_Control_L:
|
||
|
|
mask = GDK_CONTROL_MASK;
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
mask = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
*modifiers |= mask;
|
||
|
|
}
|
