diff options
Diffstat (limited to 'gedit/gedit-menu-stack-switcher.c')
| -rw-r--r-- | gedit/gedit-menu-stack-switcher.c | 420 |
1 files changed, 420 insertions, 0 deletions
diff --git a/gedit/gedit-menu-stack-switcher.c b/gedit/gedit-menu-stack-switcher.c new file mode 100644 index 0000000..4c4315c --- /dev/null +++ b/gedit/gedit-menu-stack-switcher.c @@ -0,0 +1,420 @@ +/* + * gedit-menu-stack-switcher.c + * This file is part of gedit + * + * Copyright (C) 2014 - Steve Frécinaux + * + * 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 2 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 <http://www.gnu.org/licenses/>. + */ + +#include "config.h" + +#include "gedit-menu-stack-switcher.h" + +#include <glib.h> +#include <glib/gi18n.h> +#include <gtk/gtk.h> + +struct _GeditMenuStackSwitcher +{ + GtkMenuButton parent_instance; + + GtkStack *stack; + GtkWidget *label; + GtkWidget *button_box; + GtkWidget *popover; + GHashTable *buttons; + gboolean in_child_changed; +}; + +enum { + PROP_0, + PROP_STACK, + LAST_PROP +}; + +static GParamSpec *properties[LAST_PROP]; + +G_DEFINE_TYPE (GeditMenuStackSwitcher, gedit_menu_stack_switcher, GTK_TYPE_MENU_BUTTON) + +static void +gedit_menu_stack_switcher_init (GeditMenuStackSwitcher *switcher) +{ + GtkWidget *box; + GtkWidget *arrow; + GtkStyleContext *context; + + box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6); + + arrow = gtk_image_new_from_icon_name ("pan-down-symbolic", GTK_ICON_SIZE_BUTTON); + gtk_box_pack_end (GTK_BOX (box), arrow, FALSE, TRUE, 0); + gtk_widget_set_valign (arrow, GTK_ALIGN_BASELINE); + + switcher->label = gtk_label_new (NULL); + gtk_widget_set_valign (switcher->label, GTK_ALIGN_BASELINE); + gtk_box_pack_start (GTK_BOX (box), switcher->label, TRUE, TRUE, 6); + + // FIXME: this is not correct if this widget becomes more generic + // and used also outside the header bar, but for now we just want + // the same style as title labels + context = gtk_widget_get_style_context (switcher->label); + gtk_style_context_add_class (context, "title"); + + gtk_widget_show_all (box); + gtk_container_add (GTK_CONTAINER (switcher), box); + + switcher->popover = gtk_popover_new (GTK_WIDGET (switcher)); + gtk_popover_set_position (GTK_POPOVER (switcher->popover), GTK_POS_BOTTOM); + context = gtk_widget_get_style_context (switcher->popover); + gtk_style_context_add_class (context, "gedit-menu-stack-switcher"); + + switcher->button_box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 6); + + gtk_widget_show (switcher->button_box); + + gtk_container_add (GTK_CONTAINER (switcher->popover), switcher->button_box); + + gtk_menu_button_set_popover (GTK_MENU_BUTTON (switcher), switcher->popover); + + switcher->buttons = g_hash_table_new (g_direct_hash, g_direct_equal); +} + +static void +clear_popover (GeditMenuStackSwitcher *switcher) +{ + gtk_container_foreach (GTK_CONTAINER (switcher->button_box), (GtkCallback) gtk_widget_destroy, switcher); +} + +static void +on_button_clicked (GtkWidget *widget, + GeditMenuStackSwitcher *switcher) +{ + GtkWidget *child; + + if (!switcher->in_child_changed) + { + child = g_object_get_data (G_OBJECT (widget), "stack-child"); + gtk_stack_set_visible_child (switcher->stack, child); + gtk_widget_hide (switcher->popover); + } +} + +static void +update_button (GeditMenuStackSwitcher *switcher, + GtkWidget *widget, + GtkWidget *button) +{ + GList *children; + + /* We get spurious notifications while the stack is being + * destroyed, so for now check the child actually exists + */ + children = gtk_container_get_children (GTK_CONTAINER (switcher->stack)); + if (g_list_index (children, widget) >= 0) + { + gchar *title; + + gtk_container_child_get (GTK_CONTAINER (switcher->stack), widget, + "title", &title, + NULL); + + gtk_button_set_label (GTK_BUTTON (button), title); + gtk_widget_set_visible (button, gtk_widget_get_visible (widget) && (title != NULL)); + gtk_widget_set_size_request (button, 100, -1); + + if (widget == gtk_stack_get_visible_child (switcher->stack)) + { + gtk_label_set_label (GTK_LABEL (switcher->label), title); + } + + g_free (title); + } + + g_list_free (children); +} + +static void +on_title_icon_visible_updated (GtkWidget *widget, + GParamSpec *pspec, + GeditMenuStackSwitcher *switcher) +{ + GtkWidget *button; + + button = g_hash_table_lookup (switcher->buttons, widget); + update_button (switcher, widget, button); +} + +static void +on_position_updated (GtkWidget *widget, + GParamSpec *pspec, + GeditMenuStackSwitcher *switcher) +{ + GtkWidget *button; + gint position; + + button = g_hash_table_lookup (switcher->buttons, widget); + + gtk_container_child_get (GTK_CONTAINER (switcher->stack), widget, + "position", &position, + NULL); + + gtk_box_reorder_child (GTK_BOX (switcher->button_box), button, position); +} + +static void +add_child (GeditMenuStackSwitcher *switcher, + GtkWidget *widget) +{ + GtkWidget *button; + GList *group; + + button = gtk_radio_button_new (NULL); + gtk_toggle_button_set_mode (GTK_TOGGLE_BUTTON (button), FALSE); + gtk_widget_set_valign (button, GTK_ALIGN_CENTER); + + update_button (switcher, widget, button); + + group = gtk_container_get_children (GTK_CONTAINER (switcher->button_box)); + if (group != NULL) + { + gtk_radio_button_join_group (GTK_RADIO_BUTTON (button), GTK_RADIO_BUTTON (group->data)); + g_list_free (group); + } + + gtk_container_add (GTK_CONTAINER (switcher->button_box), button); + + g_object_set_data (G_OBJECT (button), "stack-child", widget); + g_signal_connect (button, "clicked", G_CALLBACK (on_button_clicked), switcher); + g_signal_connect (widget, "notify::visible", G_CALLBACK (on_title_icon_visible_updated), switcher); + g_signal_connect (widget, "child-notify::title", G_CALLBACK (on_title_icon_visible_updated), switcher); + g_signal_connect (widget, "child-notify::icon-name", G_CALLBACK (on_title_icon_visible_updated), switcher); + g_signal_connect (widget, "child-notify::position", G_CALLBACK (on_position_updated), switcher); + + g_hash_table_insert (switcher->buttons, widget, button); +} + +static void +foreach_stack (GtkWidget *widget, + GeditMenuStackSwitcher *switcher) +{ + add_child (switcher, widget); +} + +static void +populate_popover (GeditMenuStackSwitcher *switcher) +{ + gtk_container_foreach (GTK_CONTAINER (switcher->stack), (GtkCallback)foreach_stack, switcher); +} + +static void +on_child_changed (GtkWidget *widget, + GParamSpec *pspec, + GeditMenuStackSwitcher *switcher) +{ + GtkWidget *child; + GtkWidget *button; + + child = gtk_stack_get_visible_child (GTK_STACK (widget)); + if (child) + { + gchar *title; + + gtk_container_child_get (GTK_CONTAINER (switcher->stack), child, + "title", &title, + NULL); + + gtk_label_set_label (GTK_LABEL (switcher->label), title); + g_free (title); + } + + button = g_hash_table_lookup (switcher->buttons, child); + if (button != NULL) + { + switcher->in_child_changed = TRUE; + gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button), TRUE); + switcher->in_child_changed = FALSE; + } +} + +static void +on_stack_child_added (GtkStack *stack, + GtkWidget *widget, + GeditMenuStackSwitcher *switcher) +{ + add_child (switcher, widget); +} + +static void +on_stack_child_removed (GtkStack *stack, + GtkWidget *widget, + GeditMenuStackSwitcher *switcher) +{ + GtkWidget *button; + + g_signal_handlers_disconnect_by_func (widget, on_title_icon_visible_updated, switcher); + g_signal_handlers_disconnect_by_func (widget, on_title_icon_visible_updated, switcher); + g_signal_handlers_disconnect_by_func (widget, on_title_icon_visible_updated, switcher); + g_signal_handlers_disconnect_by_func (widget, on_position_updated, switcher); + + button = g_hash_table_lookup (switcher->buttons, widget); + gtk_container_remove (GTK_CONTAINER (switcher->button_box), button); + g_hash_table_remove (switcher->buttons, widget); +} + +static void +disconnect_stack_signals (GeditMenuStackSwitcher *switcher) +{ + g_signal_handlers_disconnect_by_func (switcher->stack, on_stack_child_added, switcher); + g_signal_handlers_disconnect_by_func (switcher->stack, on_stack_child_removed, switcher); + g_signal_handlers_disconnect_by_func (switcher->stack, on_child_changed, switcher); + g_signal_handlers_disconnect_by_func (switcher->stack, disconnect_stack_signals, switcher); +} + +static void +connect_stack_signals (GeditMenuStackSwitcher *switcher) +{ + g_signal_connect (switcher->stack, "add", + G_CALLBACK (on_stack_child_added), switcher); + g_signal_connect (switcher->stack, "remove", + G_CALLBACK (on_stack_child_removed), switcher); + g_signal_connect (switcher->stack, "notify::visible-child", + G_CALLBACK (on_child_changed), switcher); + g_signal_connect_swapped (switcher->stack, "destroy", + G_CALLBACK (disconnect_stack_signals), switcher); +} + +void +gedit_menu_stack_switcher_set_stack (GeditMenuStackSwitcher *switcher, + GtkStack *stack) +{ + g_return_if_fail (GEDIT_IS_MENU_STACK_SWITCHER (switcher)); + g_return_if_fail (stack == NULL || GTK_IS_STACK (stack)); + + if (switcher->stack == stack) + return; + + if (switcher->stack) + { + disconnect_stack_signals (switcher); + clear_popover (switcher); + g_clear_object (&switcher->stack); + } + + if (stack) + { + switcher->stack = g_object_ref (stack); + populate_popover (switcher); + connect_stack_signals (switcher); + } + + gtk_widget_queue_resize (GTK_WIDGET (switcher)); + + g_object_notify_by_pspec (G_OBJECT (switcher), properties[PROP_STACK]); +} + +GtkStack * +gedit_menu_stack_switcher_get_stack (GeditMenuStackSwitcher *switcher) +{ + g_return_val_if_fail (GEDIT_IS_MENU_STACK_SWITCHER (switcher), NULL); + + return switcher->stack; +} + +static void +gedit_menu_stack_switcher_get_property (GObject *object, + guint prop_id, + GValue *value, + GParamSpec *pspec) +{ + GeditMenuStackSwitcher *switcher = GEDIT_MENU_STACK_SWITCHER (object); + + switch (prop_id) + { + case PROP_STACK: + g_value_set_object (value, switcher->stack); + break; + + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static void +gedit_menu_stack_switcher_set_property (GObject *object, + guint prop_id, + const GValue *value, + GParamSpec *pspec) +{ + GeditMenuStackSwitcher *switcher = GEDIT_MENU_STACK_SWITCHER (object); + + switch (prop_id) + { + case PROP_STACK: + gedit_menu_stack_switcher_set_stack (switcher, g_value_get_object (value)); + break; + + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static void +gedit_menu_stack_switcher_dispose (GObject *object) +{ + GeditMenuStackSwitcher *switcher = GEDIT_MENU_STACK_SWITCHER (object); + + gedit_menu_stack_switcher_set_stack (switcher, NULL); + + G_OBJECT_CLASS (gedit_menu_stack_switcher_parent_class)->dispose (object); +} + +static void +gedit_menu_stack_switcher_finalize (GObject *object) +{ + GeditMenuStackSwitcher *switcher = GEDIT_MENU_STACK_SWITCHER (object); + + g_hash_table_destroy (switcher->buttons); + + G_OBJECT_CLASS (gedit_menu_stack_switcher_parent_class)->finalize (object); +} + +static void +gedit_menu_stack_switcher_class_init (GeditMenuStackSwitcherClass *klass) +{ + GObjectClass *object_class = G_OBJECT_CLASS (klass); + + object_class->get_property = gedit_menu_stack_switcher_get_property; + object_class->set_property = gedit_menu_stack_switcher_set_property; + object_class->dispose = gedit_menu_stack_switcher_dispose; + object_class->finalize = gedit_menu_stack_switcher_finalize; + + properties[PROP_STACK] = + g_param_spec_object ("stack", + "Stack", + "Stack", + GTK_TYPE_STACK, + G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS); + + g_object_class_install_properties (object_class, LAST_PROP, properties); +} + +GtkWidget * +gedit_menu_stack_switcher_new (void) +{ + return g_object_new (GEDIT_TYPE_MENU_STACK_SWITCHER, NULL); +} + +/* ex:set ts=2 sw=2 et: */ |