/* * Copyright (c) 2013 Red Hat, Inc. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU Lesser 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 Lesser General Public * License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with this program; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA * * Author: Alexander Larsson * */ #include "config.h" #include #include "gtkstack.h" #include "gtkenums.h" #include "gtkaccessibleprivate.h" #include "gtkatcontextprivate.h" #include "gtkprivate.h" #include "gtkprogresstrackerprivate.h" #include "gtksettingsprivate.h" #include "gtksnapshot.h" #include "gtkwidgetprivate.h" #include "gtksingleselection.h" #include "gtklistlistmodelprivate.h" #include #include /** * GtkStack: * * `GtkStack` is a container which only shows one of its children * at a time. * * In contrast to `GtkNotebook`, `GtkStack` does not provide a means * for users to change the visible child. Instead, a separate widget * such as [class@Gtk.StackSwitcher] or [class@Gtk.StackSidebar] can * be used with `GtkStack` to provide this functionality. * * Transitions between pages can be animated as slides or fades. This * can be controlled with [method@Gtk.Stack.set_transition_type]. * These animations respect the [property@Gtk.Settings:gtk-enable-animations] * setting. * * `GtkStack` maintains a [class@Gtk.StackPage] object for each added * child, which holds additional per-child properties. You * obtain the `GtkStackPage` for a child with [method@Gtk.Stack.get_page] * and you can obtain a `GtkSelectionModel` containing all the pages * with [method@Gtk.Stack.get_pages]. * * # GtkStack as GtkBuildable * * To set child-specific properties in a .ui file, create `GtkStackPage` * objects explicitly, and set the child widget as a property on it: * * ```xml * * * * page1 * In the beginning… * * * It was dark * * * * * ``` * * # CSS nodes * * `GtkStack` has a single CSS node named stack. * * # Accessibility * * `GtkStack` uses the %GTK_ACCESSIBLE_ROLE_TAB_PANEL for the stack * pages, which are the accessible parent objects of the child widgets. */ /** * GtkStackTransitionType: * @GTK_STACK_TRANSITION_TYPE_NONE: No transition * @GTK_STACK_TRANSITION_TYPE_CROSSFADE: A cross-fade * @GTK_STACK_TRANSITION_TYPE_SLIDE_RIGHT: Slide from left to right * @GTK_STACK_TRANSITION_TYPE_SLIDE_LEFT: Slide from right to left * @GTK_STACK_TRANSITION_TYPE_SLIDE_UP: Slide from bottom up * @GTK_STACK_TRANSITION_TYPE_SLIDE_DOWN: Slide from top down * @GTK_STACK_TRANSITION_TYPE_SLIDE_LEFT_RIGHT: Slide from left or right according to the children order * @GTK_STACK_TRANSITION_TYPE_SLIDE_UP_DOWN: Slide from top down or bottom up according to the order * @GTK_STACK_TRANSITION_TYPE_OVER_UP: Cover the old page by sliding up * @GTK_STACK_TRANSITION_TYPE_OVER_DOWN: Cover the old page by sliding down * @GTK_STACK_TRANSITION_TYPE_OVER_LEFT: Cover the old page by sliding to the left * @GTK_STACK_TRANSITION_TYPE_OVER_RIGHT: Cover the old page by sliding to the right * @GTK_STACK_TRANSITION_TYPE_UNDER_UP: Uncover the new page by sliding up * @GTK_STACK_TRANSITION_TYPE_UNDER_DOWN: Uncover the new page by sliding down * @GTK_STACK_TRANSITION_TYPE_UNDER_LEFT: Uncover the new page by sliding to the left * @GTK_STACK_TRANSITION_TYPE_UNDER_RIGHT: Uncover the new page by sliding to the right * @GTK_STACK_TRANSITION_TYPE_OVER_UP_DOWN: Cover the old page sliding up or uncover the new page sliding down, according to order * @GTK_STACK_TRANSITION_TYPE_OVER_DOWN_UP: Cover the old page sliding down or uncover the new page sliding up, according to order * @GTK_STACK_TRANSITION_TYPE_OVER_LEFT_RIGHT: Cover the old page sliding left or uncover the new page sliding right, according to order * @GTK_STACK_TRANSITION_TYPE_OVER_RIGHT_LEFT: Cover the old page sliding right or uncover the new page sliding left, according to order * @GTK_STACK_TRANSITION_TYPE_ROTATE_LEFT: Pretend the pages are sides of a cube and rotate that cube to the left * @GTK_STACK_TRANSITION_TYPE_ROTATE_RIGHT: Pretend the pages are sides of a cube and rotate that cube to the right * @GTK_STACK_TRANSITION_TYPE_ROTATE_LEFT_RIGHT: Pretend the pages are sides of a cube and rotate that cube to the left or right according to the children order * * Possible transitions between pages in a `GtkStack` widget. * * New values may be added to this enumeration over time. */ /** * GtkStackPage: * * `GtkStackPage` is an auxiliary class used by `GtkStack`. */ /* TODO: * filter events out events to the last_child widget during transitions */ struct _GtkStack { GtkWidget parent_instance; }; typedef struct _GtkStackClass GtkStackClass; struct _GtkStackClass { GtkWidgetClass parent_class; }; typedef struct { GPtrArray *children; GtkStackPage *visible_child; gboolean homogeneous[2]; GtkStackTransitionType transition_type; guint transition_duration; GtkStackPage *last_visible_child; guint tick_id; GtkProgressTracker tracker; gboolean first_frame_skipped; int last_visible_widget_width; int last_visible_widget_height; gboolean interpolate_size; GtkStackTransitionType active_transition_type; GtkSelectionModel *pages; } GtkStackPrivate; static void gtk_stack_buildable_interface_init (GtkBuildableIface *iface); static void gtk_stack_accessible_init (GtkAccessibleInterface *iface); G_DEFINE_TYPE_WITH_CODE (GtkStack, gtk_stack, GTK_TYPE_WIDGET, G_ADD_PRIVATE (GtkStack) G_IMPLEMENT_INTERFACE (GTK_TYPE_ACCESSIBLE, gtk_stack_accessible_init) G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE, gtk_stack_buildable_interface_init)) enum { PROP_0, PROP_HHOMOGENEOUS, PROP_VHOMOGENEOUS, PROP_VISIBLE_CHILD, PROP_VISIBLE_CHILD_NAME, PROP_TRANSITION_DURATION, PROP_TRANSITION_TYPE, PROP_TRANSITION_RUNNING, PROP_INTERPOLATE_SIZE, PROP_PAGES, LAST_PROP }; enum { CHILD_PROP_0, CHILD_PROP_CHILD, CHILD_PROP_NAME, CHILD_PROP_TITLE, CHILD_PROP_ICON_NAME, CHILD_PROP_NEEDS_ATTENTION, CHILD_PROP_VISIBLE, CHILD_PROP_USE_UNDERLINE, LAST_CHILD_PROP, PROP_ACCESSIBLE_ROLE }; struct _GtkStackPage { GObject parent_instance; GtkWidget *widget; char *name; char *title; char *icon_name; GtkWidget *last_focus; GtkStackPage *next_page; GtkATContext *at_context; guint needs_attention : 1; guint visible : 1; guint use_underline : 1; guint in_destruction : 1; }; typedef struct _GtkStackPageClass GtkStackPageClass; struct _GtkStackPageClass { GObjectClass parent_class; }; static GParamSpec *stack_props[LAST_PROP] = { NULL, }; static GParamSpec *stack_page_props[LAST_CHILD_PROP] = { NULL, }; static GtkATContext * gtk_stack_page_accessible_get_at_context (GtkAccessible *accessible) { GtkStackPage *page = GTK_STACK_PAGE (accessible); if (page->in_destruction) { GTK_DEBUG (A11Y, "ATContext for “%s” [%p] accessed during destruction", G_OBJECT_TYPE_NAME (accessible), accessible); return NULL; } if (page->at_context == NULL) { GtkAccessibleRole role = GTK_ACCESSIBLE_ROLE_TAB_PANEL; GdkDisplay *display; if (page->widget != NULL) display = gtk_widget_get_display (page->widget); else display = gdk_display_get_default (); page->at_context = gtk_at_context_create (role, accessible, display); if (page->at_context == NULL) return NULL; } return g_object_ref (page->at_context); } static gboolean gtk_stack_page_accessible_get_platform_state (GtkAccessible *self, GtkAccessiblePlatformState state) { return FALSE; } static GtkAccessible * gtk_stack_page_accessible_get_accessible_parent (GtkAccessible *accessible) { GtkStackPage *page = GTK_STACK_PAGE (accessible); GtkWidget *parent; if (page->widget == NULL) return NULL; parent = _gtk_widget_get_parent (page->widget); return GTK_ACCESSIBLE (g_object_ref (parent)); } static GtkAccessible * gtk_stack_page_accessible_get_first_accessible_child (GtkAccessible *accessible) { GtkStackPage *page = GTK_STACK_PAGE (accessible); if (page->widget == NULL) return NULL; return GTK_ACCESSIBLE (g_object_ref (page->widget)); } static GtkAccessible * gtk_stack_page_accessible_get_next_accessible_sibling (GtkAccessible *accessible) { GtkStackPage *page = GTK_STACK_PAGE (accessible); if (page->next_page == NULL) return NULL; return GTK_ACCESSIBLE (g_object_ref (page->next_page)); } static gboolean gtk_stack_page_accessible_get_bounds (GtkAccessible *accessible, int *x, int *y, int *width, int *height) { GtkStackPage *page = GTK_STACK_PAGE (accessible); if (page->widget != NULL) return gtk_accessible_get_bounds (GTK_ACCESSIBLE (page->widget), x, y, width, height); else return FALSE; } static void gtk_stack_page_accessible_init (GtkAccessibleInterface *iface) { iface->get_at_context = gtk_stack_page_accessible_get_at_context; iface->get_platform_state = gtk_stack_page_accessible_get_platform_state; iface->get_accessible_parent = gtk_stack_page_accessible_get_accessible_parent; iface->get_first_accessible_child = gtk_stack_page_accessible_get_first_accessible_child; iface->get_next_accessible_sibling = gtk_stack_page_accessible_get_next_accessible_sibling; iface->get_bounds = gtk_stack_page_accessible_get_bounds; } G_DEFINE_TYPE_WITH_CODE (GtkStackPage, gtk_stack_page, G_TYPE_OBJECT, G_IMPLEMENT_INTERFACE (GTK_TYPE_ACCESSIBLE, gtk_stack_page_accessible_init)) static void gtk_stack_page_init (GtkStackPage *page) { page->visible = TRUE; } static void gtk_stack_page_finalize (GObject *object) { GtkStackPage *page = GTK_STACK_PAGE (object); g_clear_object (&page->widget); g_free (page->name); g_free (page->title); g_free (page->icon_name); if (page->last_focus) g_object_remove_weak_pointer (G_OBJECT (page->last_focus), (gpointer *)&page->last_focus); G_OBJECT_CLASS (gtk_stack_page_parent_class)->finalize (object); } static void gtk_stack_page_dispose (GObject *object) { GtkStackPage *page = GTK_STACK_PAGE (object); page->in_destruction = TRUE; g_clear_object (&page->at_context); G_OBJECT_CLASS (gtk_stack_page_parent_class)->dispose (object); } static void gtk_stack_page_get_property (GObject *object, guint property_id, GValue *value, GParamSpec *pspec) { GtkStackPage *info = GTK_STACK_PAGE (object); switch (property_id) { case CHILD_PROP_CHILD: g_value_set_object (value, info->widget); break; case CHILD_PROP_NAME: g_value_set_string (value, gtk_stack_page_get_name (info)); break; case CHILD_PROP_TITLE: g_value_set_string (value, gtk_stack_page_get_title (info)); break; case CHILD_PROP_ICON_NAME: g_value_set_string (value, gtk_stack_page_get_icon_name (info)); break; case CHILD_PROP_NEEDS_ATTENTION: g_value_set_boolean (value, gtk_stack_page_get_needs_attention (info)); break; case CHILD_PROP_VISIBLE: g_value_set_boolean (value, gtk_stack_page_get_visible (info)); break; case CHILD_PROP_USE_UNDERLINE: g_value_set_boolean (value, gtk_stack_page_get_use_underline (info)); break; case PROP_ACCESSIBLE_ROLE: g_value_set_enum (value, GTK_ACCESSIBLE_ROLE_TAB_PANEL); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); break; } } static void gtk_stack_page_set_property (GObject *object, guint property_id, const GValue *value, GParamSpec *pspec) { GtkStackPage *info = GTK_STACK_PAGE (object); switch (property_id) { case CHILD_PROP_CHILD: g_set_object (&info->widget, g_value_get_object (value)); gtk_accessible_set_accessible_parent (GTK_ACCESSIBLE (info->widget), GTK_ACCESSIBLE (info), NULL); break; case CHILD_PROP_NAME: gtk_stack_page_set_name (info, g_value_get_string (value)); break; case CHILD_PROP_TITLE: gtk_stack_page_set_title (info, g_value_get_string (value)); break; case CHILD_PROP_ICON_NAME: gtk_stack_page_set_icon_name (info, g_value_get_string (value)); break; case CHILD_PROP_NEEDS_ATTENTION: gtk_stack_page_set_needs_attention (info, g_value_get_boolean (value)); break; case CHILD_PROP_VISIBLE: gtk_stack_page_set_visible (info, g_value_get_boolean (value)); break; case CHILD_PROP_USE_UNDERLINE: gtk_stack_page_set_use_underline (info, g_value_get_boolean (value)); break; case PROP_ACCESSIBLE_ROLE: break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); break; } } static void gtk_stack_page_constructed (GObject *gobject) { GtkStackPage *self = GTK_STACK_PAGE (gobject); if (G_UNLIKELY (self->widget == NULL)) g_error ("GtkStackPage '%s' [%p] is missing a child widget", self->name != NULL ? self->name : "", self); G_OBJECT_CLASS (gtk_stack_page_parent_class)->constructed (gobject); } static void gtk_stack_page_class_init (GtkStackPageClass *class) { GObjectClass *object_class = G_OBJECT_CLASS (class); object_class->finalize = gtk_stack_page_finalize; object_class->dispose = gtk_stack_page_dispose; object_class->get_property = gtk_stack_page_get_property; object_class->set_property = gtk_stack_page_set_property; object_class->constructed = gtk_stack_page_constructed; /** * GtkStackPage:child: (attributes org.gtk.Property.get=gtk_stack_page_get_child) * * The child that this page is for. */ stack_page_props[CHILD_PROP_CHILD] = g_param_spec_object ("child", NULL, NULL, GTK_TYPE_WIDGET, GTK_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY); /** * GtkStackPage:name: (attributes org.gtk.Property.get=gtk_stack_page_get_name org.gtk.Property.set=gtk_stack_page_set_name) * * The name of the child page. */ stack_page_props[CHILD_PROP_NAME] = g_param_spec_string ("name", NULL, NULL, NULL, GTK_PARAM_READWRITE); /** * GtkStackPage:title: (attributes org.gtk.Property.get=gtk_stack_page_get_title org.gtk.Property.set=gtk_stack_page_set_title) * * The title of the child page. */ stack_page_props[CHILD_PROP_TITLE] = g_param_spec_string ("title", NULL, NULL, NULL, GTK_PARAM_READWRITE); /** * GtkStackPage:icon-name: (attributes org.gtk.Property.get=gtk_stack_page_get_icon_name org.gtk.Property.set=gtk_stack_page_set_icon_name) * * The icon name of the child page. */ stack_page_props[CHILD_PROP_ICON_NAME] = g_param_spec_string ("icon-name", NULL, NULL, NULL, GTK_PARAM_READWRITE); /** * GtkStackPage:needs-attention: (attributes org.gtk.Property.get=gtk_stack_page_get_needs_attention org.gtk.Property.set=gtk_stack_page_set_needs_attention) * * Whether the page requires the user attention. * * This is used by the [class@Gtk.StackSwitcher] to change the * appearance of the corresponding button when a page needs * attention and it is not the current one. */ stack_page_props[CHILD_PROP_NEEDS_ATTENTION] = g_param_spec_boolean ("needs-attention", NULL, NULL, FALSE, GTK_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY); /** * GtkStackPage:visible: (attributes org.gtk.Property.get=gtk_stack_page_get_visible org.gtk.Property.set=gtk_stack_page_set_visible) * * Whether this page is visible. */ stack_page_props[CHILD_PROP_VISIBLE] = g_param_spec_boolean ("visible", NULL, NULL, TRUE, GTK_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY); /** * GtkStackPage:use-underline: (attributes org.gtk.Property.get=gtk_stack_page_get_use_underline org.gtk.Property.set=gtk_stack_page_set_use_underline) * * If set, an underline in the title indicates a mnemonic. */ stack_page_props[CHILD_PROP_USE_UNDERLINE] = g_param_spec_boolean ("use-underline", NULL, NULL, FALSE, GTK_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY); g_object_class_install_properties (object_class, LAST_CHILD_PROP, stack_page_props); g_object_class_override_property (object_class, PROP_ACCESSIBLE_ROLE, "accessible-role"); } #define GTK_TYPE_STACK_PAGES (gtk_stack_pages_get_type ()) G_DECLARE_FINAL_TYPE (GtkStackPages, gtk_stack_pages, GTK, STACK_PAGES, GObject) struct _GtkStackPages { GObject parent_instance; GtkStack *stack; }; struct _GtkStackPagesClass { GObjectClass parent_class; }; enum { PAGES_PROP_0, PAGES_PROP_ITEM_TYPE, PAGES_PROP_N_ITEMS, PAGES_N_PROPS }; static GParamSpec *pages_properties[PAGES_N_PROPS] = { NULL, }; static GType gtk_stack_pages_get_item_type (GListModel *model) { return GTK_TYPE_STACK_PAGE; } static guint gtk_stack_pages_get_n_items (GListModel *model) { GtkStackPages *pages = GTK_STACK_PAGES (model); GtkStackPrivate *priv = gtk_stack_get_instance_private (pages->stack); return priv->children->len; } static gpointer gtk_stack_pages_get_item (GListModel *model, guint position) { GtkStackPages *pages = GTK_STACK_PAGES (model); GtkStackPrivate *priv = gtk_stack_get_instance_private (pages->stack); GtkStackPage *page; if (position >= priv->children->len) return NULL; page = g_ptr_array_index (priv->children, position); return g_object_ref (page); } static void gtk_stack_pages_list_model_init (GListModelInterface *iface) { iface->get_item_type = gtk_stack_pages_get_item_type; iface->get_n_items = gtk_stack_pages_get_n_items; iface->get_item = gtk_stack_pages_get_item; } static gboolean gtk_stack_pages_is_selected (GtkSelectionModel *model, guint position) { GtkStackPages *pages = GTK_STACK_PAGES (model); GtkStackPrivate *priv = gtk_stack_get_instance_private (pages->stack); GtkStackPage *page; if (position >= priv->children->len) return FALSE; page = g_ptr_array_index (priv->children, position); return page == priv->visible_child; } static void set_visible_child (GtkStack *stack, GtkStackPage *child_info, GtkStackTransitionType transition_type, guint transition_duration); static gboolean gtk_stack_pages_select_item (GtkSelectionModel *model, guint position, gboolean exclusive) { GtkStackPages *pages = GTK_STACK_PAGES (model); GtkStackPrivate *priv = gtk_stack_get_instance_private (pages->stack); GtkStackPage *page; if (position >= priv->children->len) return FALSE; page = g_ptr_array_index (priv->children, position); set_visible_child (pages->stack, page, priv->transition_type, priv->transition_duration); return TRUE; } static void gtk_stack_pages_selection_model_init (GtkSelectionModelInterface *iface) { iface->is_selected = gtk_stack_pages_is_selected; iface->select_item = gtk_stack_pages_select_item; } G_DEFINE_TYPE_WITH_CODE (GtkStackPages, gtk_stack_pages, G_TYPE_OBJECT, G_IMPLEMENT_INTERFACE (G_TYPE_LIST_MODEL, gtk_stack_pages_list_model_init) G_IMPLEMENT_INTERFACE (GTK_TYPE_SELECTION_MODEL, gtk_stack_pages_selection_model_init)) static void gtk_stack_pages_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { GtkStackPages *self = GTK_STACK_PAGES (object); switch (prop_id) { case PAGES_PROP_ITEM_TYPE: g_value_set_gtype (value, GTK_TYPE_STACK_PAGE); break; case PAGES_PROP_N_ITEMS: g_value_set_uint (value, gtk_stack_pages_get_n_items (G_LIST_MODEL (self))); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gtk_stack_pages_init (GtkStackPages *pages) { } static void gtk_stack_pages_class_init (GtkStackPagesClass *klass) { GObjectClass *object_class = G_OBJECT_CLASS (klass); object_class->get_property = gtk_stack_pages_get_property; pages_properties[PAGES_PROP_ITEM_TYPE] = g_param_spec_gtype ("item-type", NULL, NULL, GTK_TYPE_STACK_PAGE, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS); pages_properties[PAGES_PROP_N_ITEMS] = g_param_spec_uint ("n-items", NULL, NULL, 0, G_MAXUINT, 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS); g_object_class_install_properties (object_class, PAGES_N_PROPS, pages_properties); } static GtkStackPages * gtk_stack_pages_new (GtkStack *stack) { GtkStackPages *pages; pages = g_object_new (GTK_TYPE_STACK_PAGES, NULL); pages->stack = stack; return pages; } static GtkStackPage *gtk_stack_add_internal (GtkStack *stack, GtkWidget *child, const char *name, const char *title); static GtkSizeRequestMode gtk_stack_get_request_mode (GtkWidget *widget); static void gtk_stack_compute_expand (GtkWidget *widget, gboolean *hexpand, gboolean *vexpand); static void gtk_stack_size_allocate (GtkWidget *widget, int width, int height, int baseline); static void gtk_stack_snapshot (GtkWidget *widget, GtkSnapshot *snapshot); static void gtk_stack_measure (GtkWidget *widget, GtkOrientation orientation, int for_size, int *minimum, int *natural, int *minimum_baseline, int *natural_baseline); static void gtk_stack_dispose (GObject *obj); static void gtk_stack_finalize (GObject *obj); static void gtk_stack_get_property (GObject *object, guint property_id, GValue *value, GParamSpec *pspec); static void gtk_stack_set_property (GObject *object, guint property_id, const GValue *value, GParamSpec *pspec); static void gtk_stack_unschedule_ticks (GtkStack *stack); static void gtk_stack_add_page (GtkStack *stack, GtkStackPage *page); static GtkBuildableIface *parent_buildable_iface; static void gtk_stack_buildable_add_child (GtkBuildable *buildable, GtkBuilder *builder, GObject *child, const char *type) { if (GTK_IS_STACK_PAGE (child)) gtk_stack_add_page (GTK_STACK (buildable), GTK_STACK_PAGE (child)); else if (GTK_IS_WIDGET (child)) gtk_stack_add_internal (GTK_STACK (buildable), GTK_WIDGET (child), NULL, NULL); else parent_buildable_iface->add_child (buildable, builder, child, type); } static void gtk_stack_buildable_interface_init (GtkBuildableIface *iface) { parent_buildable_iface = g_type_interface_peek_parent (iface); iface->add_child = gtk_stack_buildable_add_child; } static GtkAccessible * gtk_stack_accessible_get_first_accessible_child (GtkAccessible *accessible) { GtkStack *stack = GTK_STACK (accessible); GtkStackPrivate *priv = gtk_stack_get_instance_private (stack); GtkAccessible *page_accessible = NULL; if (priv->children->len > 0) page_accessible = GTK_ACCESSIBLE (g_object_ref (g_ptr_array_index (priv->children, 0))); return page_accessible; } static void gtk_stack_accessible_init (GtkAccessibleInterface *iface) { iface->get_first_accessible_child = gtk_stack_accessible_get_first_accessible_child; } static void stack_remove (GtkStack *stack, GtkWidget *child, gboolean in_dispose); static void gtk_stack_dispose (GObject *obj) { GtkStack *stack = GTK_STACK (obj); GtkStackPrivate *priv = gtk_stack_get_instance_private (stack); GtkWidget *child; guint n_pages = priv->children->len; while ((child = gtk_widget_get_first_child (GTK_WIDGET (stack)))) stack_remove (stack, child, TRUE); if (priv->pages && n_pages > 0) { g_list_model_items_changed (G_LIST_MODEL (priv->pages), 0, n_pages, 0); g_object_notify_by_pspec (G_OBJECT (priv->pages), pages_properties[PAGES_PROP_N_ITEMS]); } G_OBJECT_CLASS (gtk_stack_parent_class)->dispose (obj); } static void gtk_stack_finalize (GObject *obj) { GtkStack *stack = GTK_STACK (obj); GtkStackPrivate *priv = gtk_stack_get_instance_private (stack); if (priv->pages) g_object_remove_weak_pointer (G_OBJECT (priv->pages), (gpointer *)&priv->pages); gtk_stack_unschedule_ticks (stack); g_ptr_array_free (priv->children, TRUE); G_OBJECT_CLASS (gtk_stack_parent_class)->finalize (obj); } static void gtk_stack_get_property (GObject *object, guint property_id, GValue *value, GParamSpec *pspec) { GtkStack *stack = GTK_STACK (object); switch (property_id) { case PROP_HHOMOGENEOUS: g_value_set_boolean (value, gtk_stack_get_hhomogeneous (stack)); break; case PROP_VHOMOGENEOUS: g_value_set_boolean (value, gtk_stack_get_vhomogeneous (stack)); break; case PROP_VISIBLE_CHILD: g_value_set_object (value, gtk_stack_get_visible_child (stack)); break; case PROP_VISIBLE_CHILD_NAME: g_value_set_string (value, gtk_stack_get_visible_child_name (stack)); break; case PROP_TRANSITION_DURATION: g_value_set_uint (value, gtk_stack_get_transition_duration (stack)); break; case PROP_TRANSITION_TYPE: g_value_set_enum (value, gtk_stack_get_transition_type (stack)); break; case PROP_TRANSITION_RUNNING: g_value_set_boolean (value, gtk_stack_get_transition_running (stack)); break; case PROP_INTERPOLATE_SIZE: g_value_set_boolean (value, gtk_stack_get_interpolate_size (stack)); break; case PROP_PAGES: g_value_take_object (value, gtk_stack_get_pages (stack)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); break; } } static void gtk_stack_set_property (GObject *object, guint property_id, const GValue *value, GParamSpec *pspec) { GtkStack *stack = GTK_STACK (object); switch (property_id) { case PROP_HHOMOGENEOUS: gtk_stack_set_hhomogeneous (stack, g_value_get_boolean (value)); break; case PROP_VHOMOGENEOUS: gtk_stack_set_vhomogeneous (stack, g_value_get_boolean (value)); break; case PROP_VISIBLE_CHILD: gtk_stack_set_visible_child (stack, g_value_get_object (value)); break; case PROP_VISIBLE_CHILD_NAME: gtk_stack_set_visible_child_name (stack, g_value_get_string (value)); break; case PROP_TRANSITION_DURATION: gtk_stack_set_transition_duration (stack, g_value_get_uint (value)); break; case PROP_TRANSITION_TYPE: gtk_stack_set_transition_type (stack, g_value_get_enum (value)); break; case PROP_INTERPOLATE_SIZE: gtk_stack_set_interpolate_size (stack, g_value_get_boolean (value)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); break; } } static void gtk_stack_class_init (GtkStackClass *klass) { GObjectClass *object_class = G_OBJECT_CLASS (klass); GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass); object_class->get_property = gtk_stack_get_property; object_class->set_property = gtk_stack_set_property; object_class->dispose = gtk_stack_dispose; object_class->finalize = gtk_stack_finalize; widget_class->size_allocate = gtk_stack_size_allocate; widget_class->snapshot = gtk_stack_snapshot; widget_class->measure = gtk_stack_measure; widget_class->compute_expand = gtk_stack_compute_expand; widget_class->get_request_mode = gtk_stack_get_request_mode; /** * GtkStack:hhomogeneous: (attributes org.gtk.Property.get=gtk_stack_get_hhomogeneous org.gtk.Property.set=gtk_stack_set_hhomogeneous) * * %TRUE if the stack allocates the same width for all children. */ stack_props[PROP_HHOMOGENEOUS] = g_param_spec_boolean ("hhomogeneous", NULL, NULL, TRUE, GTK_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY); /** * GtkStack:vhomogeneous: (attributes org.gtk.Property.get=gtk_stack_get_vhomogeneous org.gtk.Property.set=gtk_stack_set_vhomogeneous) * * %TRUE if the stack allocates the same height for all children. */ stack_props[PROP_VHOMOGENEOUS] = g_param_spec_boolean ("vhomogeneous", NULL, NULL, TRUE, GTK_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY); /** * GtkStack:visible-child: (attributes org.gtk.Property.get=gtk_stack_get_visible_child org.gtk.Property.set=gtk_stack_set_visible_child) * * The widget currently visible in the stack. */ stack_props[PROP_VISIBLE_CHILD] = g_param_spec_object ("visible-child", NULL, NULL, GTK_TYPE_WIDGET, GTK_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY); /** * GtkStack:visible-child-name: (attributes org.gtk.Property.get=gtk_stack_get_visible_child_name org.gtk.Property.set=gtk_stack_set_visible_child_name) * * The name of the widget currently visible in the stack. */ stack_props[PROP_VISIBLE_CHILD_NAME] = g_param_spec_string ("visible-child-name", NULL, NULL, NULL, GTK_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY); /** * GtkStack:transition-duration: (attributes org.gtk.Property.get=gtk_stack_get_transition_duration org.gtk.Property.set=gtk_stack_set_transition_duration) * * The animation duration, in milliseconds. */ stack_props[PROP_TRANSITION_DURATION] = g_param_spec_uint ("transition-duration", NULL, NULL, 0, G_MAXUINT, 200, GTK_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY); /** * GtkStack:transition-type: (attributes org.gtk.Property.get=gtk_stack_get_transition_type org.gtk.Property.set=gtk_stack_set_transition_type) * * The type of animation used to transition. */ stack_props[PROP_TRANSITION_TYPE] = g_param_spec_enum ("transition-type", NULL, NULL, GTK_TYPE_STACK_TRANSITION_TYPE, GTK_STACK_TRANSITION_TYPE_NONE, GTK_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY); /** * GtkStack:transition-running: (attributes org.gtk.Property.get=gtk_stack_get_transition_running) * * Whether or not the transition is currently running. */ stack_props[PROP_TRANSITION_RUNNING] = g_param_spec_boolean ("transition-running", NULL, NULL, FALSE, GTK_PARAM_READABLE); /** * GtkStack:interpolate-size: (attributes org.gtk.Property.get=gtk_stack_get_interpolate_size org.gtk.Property.set=gtk_stack_set_interpolate_size) * * Whether or not the size should smoothly change during the transition. */ stack_props[PROP_INTERPOLATE_SIZE] = g_param_spec_boolean ("interpolate-size", NULL, NULL, FALSE, GTK_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY); /** * GtkStack:pages: (attributes org.gtk.Property.get=gtk_stack_get_pages) * * A selection model with the stack pages. */ stack_props[PROP_PAGES] = g_param_spec_object ("pages", NULL, NULL, GTK_TYPE_SELECTION_MODEL, GTK_PARAM_READABLE); g_object_class_install_properties (object_class, LAST_PROP, stack_props); gtk_widget_class_set_css_name (widget_class, I_("stack")); gtk_widget_class_set_accessible_role (widget_class, GTK_ACCESSIBLE_ROLE_GROUP); } /** * gtk_stack_new: * * Creates a new `GtkStack`. * * Returns: a new `GtkStack` */ GtkWidget * gtk_stack_new (void) { return g_object_new (GTK_TYPE_STACK, NULL); } static GtkStackPage * find_child_info_for_widget (GtkStack *stack, GtkWidget *child) { GtkStackPrivate *priv = gtk_stack_get_instance_private (stack); GtkStackPage *info; guint idx; for (idx = 0; idx < priv->children->len; idx++) { info = g_ptr_array_index (priv->children, idx); if (info->widget == child) return info; } return NULL; } static inline gboolean is_left_transition (GtkStackTransitionType transition_type) { return (transition_type == GTK_STACK_TRANSITION_TYPE_SLIDE_LEFT || transition_type == GTK_STACK_TRANSITION_TYPE_OVER_LEFT); } static inline gboolean is_right_transition (GtkStackTransitionType transition_type) { return (transition_type == GTK_STACK_TRANSITION_TYPE_SLIDE_RIGHT || transition_type == GTK_STACK_TRANSITION_TYPE_OVER_RIGHT); } static inline gboolean is_up_transition (GtkStackTransitionType transition_type) { return (transition_type == GTK_STACK_TRANSITION_TYPE_SLIDE_UP || transition_type == GTK_STACK_TRANSITION_TYPE_OVER_UP); } static inline gboolean is_down_transition (GtkStackTransitionType transition_type) { return (transition_type == GTK_STACK_TRANSITION_TYPE_SLIDE_DOWN || transition_type == GTK_STACK_TRANSITION_TYPE_OVER_DOWN); } /* Transitions that cause the bin window to move */ static inline gboolean is_window_moving_transition (GtkStackTransitionType transition_type) { return (transition_type == GTK_STACK_TRANSITION_TYPE_SLIDE_LEFT || transition_type == GTK_STACK_TRANSITION_TYPE_SLIDE_RIGHT || transition_type == GTK_STACK_TRANSITION_TYPE_SLIDE_UP || transition_type == GTK_STACK_TRANSITION_TYPE_SLIDE_DOWN || transition_type == GTK_STACK_TRANSITION_TYPE_OVER_UP || transition_type == GTK_STACK_TRANSITION_TYPE_OVER_DOWN || transition_type == GTK_STACK_TRANSITION_TYPE_OVER_LEFT || transition_type == GTK_STACK_TRANSITION_TYPE_OVER_RIGHT); } /* Transitions that change direction depending on the relative order of the old and new child */ static inline gboolean is_direction_dependent_transition (GtkStackTransitionType transition_type) { return (transition_type == GTK_STACK_TRANSITION_TYPE_SLIDE_LEFT_RIGHT || transition_type == GTK_STACK_TRANSITION_TYPE_SLIDE_UP_DOWN || transition_type == GTK_STACK_TRANSITION_TYPE_OVER_UP_DOWN || transition_type == GTK_STACK_TRANSITION_TYPE_OVER_DOWN_UP || transition_type == GTK_STACK_TRANSITION_TYPE_OVER_LEFT_RIGHT || transition_type == GTK_STACK_TRANSITION_TYPE_OVER_RIGHT_LEFT || transition_type == GTK_STACK_TRANSITION_TYPE_ROTATE_LEFT_RIGHT); } /* Returns simple transition type for a direction dependent transition, given whether the new child (the one being switched to) is first in the stacking order (added earlier). */ static inline GtkStackTransitionType get_simple_transition_type (gboolean new_child_first, GtkStackTransitionType transition_type) { switch (transition_type) { case GTK_STACK_TRANSITION_TYPE_SLIDE_LEFT_RIGHT: return new_child_first ? GTK_STACK_TRANSITION_TYPE_SLIDE_RIGHT : GTK_STACK_TRANSITION_TYPE_SLIDE_LEFT; case GTK_STACK_TRANSITION_TYPE_ROTATE_LEFT_RIGHT: return new_child_first ? GTK_STACK_TRANSITION_TYPE_ROTATE_RIGHT : GTK_STACK_TRANSITION_TYPE_ROTATE_LEFT; case GTK_STACK_TRANSITION_TYPE_SLIDE_UP_DOWN: return new_child_first ? GTK_STACK_TRANSITION_TYPE_SLIDE_DOWN : GTK_STACK_TRANSITION_TYPE_SLIDE_UP; case GTK_STACK_TRANSITION_TYPE_OVER_UP_DOWN: return new_child_first ? GTK_STACK_TRANSITION_TYPE_UNDER_DOWN : GTK_STACK_TRANSITION_TYPE_OVER_UP; case GTK_STACK_TRANSITION_TYPE_OVER_DOWN_UP: return new_child_first ? GTK_STACK_TRANSITION_TYPE_UNDER_UP : GTK_STACK_TRANSITION_TYPE_OVER_DOWN; case GTK_STACK_TRANSITION_TYPE_OVER_LEFT_RIGHT: return new_child_first ? GTK_STACK_TRANSITION_TYPE_UNDER_RIGHT : GTK_STACK_TRANSITION_TYPE_OVER_LEFT; case GTK_STACK_TRANSITION_TYPE_OVER_RIGHT_LEFT: return new_child_first ? GTK_STACK_TRANSITION_TYPE_UNDER_LEFT : GTK_STACK_TRANSITION_TYPE_OVER_RIGHT; case GTK_STACK_TRANSITION_TYPE_SLIDE_UP: case GTK_STACK_TRANSITION_TYPE_SLIDE_DOWN: case GTK_STACK_TRANSITION_TYPE_OVER_UP: case GTK_STACK_TRANSITION_TYPE_OVER_DOWN: case GTK_STACK_TRANSITION_TYPE_UNDER_UP: case GTK_STACK_TRANSITION_TYPE_UNDER_DOWN: case GTK_STACK_TRANSITION_TYPE_NONE: case GTK_STACK_TRANSITION_TYPE_SLIDE_LEFT: case GTK_STACK_TRANSITION_TYPE_SLIDE_RIGHT: case GTK_STACK_TRANSITION_TYPE_OVER_LEFT: case GTK_STACK_TRANSITION_TYPE_OVER_RIGHT: case GTK_STACK_TRANSITION_TYPE_UNDER_LEFT: case GTK_STACK_TRANSITION_TYPE_UNDER_RIGHT: case GTK_STACK_TRANSITION_TYPE_CROSSFADE: case GTK_STACK_TRANSITION_TYPE_ROTATE_LEFT: case GTK_STACK_TRANSITION_TYPE_ROTATE_RIGHT: default: return transition_type; } } static int get_bin_window_x (GtkStack *stack) { GtkStackPrivate *priv = gtk_stack_get_instance_private (stack); int width; int x = 0; width = gtk_widget_get_width (GTK_WIDGET (stack)); if (gtk_progress_tracker_get_state (&priv->tracker) != GTK_PROGRESS_STATE_AFTER) { if (is_left_transition (priv->active_transition_type)) x = width * (1 - gtk_progress_tracker_get_ease_out_cubic (&priv->tracker, FALSE)); if (is_right_transition (priv->active_transition_type)) x = -width * (1 - gtk_progress_tracker_get_ease_out_cubic (&priv->tracker, FALSE)); } return x; } static int get_bin_window_y (GtkStack *stack) { GtkStackPrivate *priv = gtk_stack_get_instance_private (stack); int height; int y = 0; height = gtk_widget_get_height (GTK_WIDGET (stack)); if (gtk_progress_tracker_get_state (&priv->tracker) != GTK_PROGRESS_STATE_AFTER) { if (is_up_transition (priv->active_transition_type)) y = height * (1 - gtk_progress_tracker_get_ease_out_cubic (&priv->tracker, FALSE)); if (is_down_transition(priv->active_transition_type)) y = -height * (1 - gtk_progress_tracker_get_ease_out_cubic (&priv->tracker, FALSE)); } return y; } static void gtk_stack_progress_updated (GtkStack *stack) { GtkStackPrivate *priv = gtk_stack_get_instance_private (stack); if (!priv->homogeneous[GTK_ORIENTATION_VERTICAL] || !priv->homogeneous[GTK_ORIENTATION_HORIZONTAL]) gtk_widget_queue_resize (GTK_WIDGET (stack)); else if (is_window_moving_transition (priv->active_transition_type)) gtk_widget_queue_allocate (GTK_WIDGET (stack)); else gtk_widget_queue_draw (GTK_WIDGET (stack)); if (gtk_progress_tracker_get_state (&priv->tracker) == GTK_PROGRESS_STATE_AFTER && priv->last_visible_child != NULL) { gtk_widget_set_child_visible (priv->last_visible_child->widget, FALSE); priv->last_visible_child = NULL; } } static gboolean gtk_stack_transition_cb (GtkWidget *widget, GdkFrameClock *frame_clock, gpointer user_data) { GtkStack *stack = GTK_STACK (widget); GtkStackPrivate *priv = gtk_stack_get_instance_private (stack); if (priv->first_frame_skipped) gtk_progress_tracker_advance_frame (&priv->tracker, gdk_frame_clock_get_frame_time (frame_clock)); else priv->first_frame_skipped = TRUE; /* Finish animation early if not mapped anymore */ if (!gtk_widget_get_mapped (widget)) gtk_progress_tracker_finish (&priv->tracker); gtk_stack_progress_updated (GTK_STACK (widget)); if (gtk_progress_tracker_get_state (&priv->tracker) == GTK_PROGRESS_STATE_AFTER) { priv->tick_id = 0; g_object_notify_by_pspec (G_OBJECT (stack), stack_props[PROP_TRANSITION_RUNNING]); return FALSE; } return TRUE; } static void gtk_stack_schedule_ticks (GtkStack *stack) { GtkStackPrivate *priv = gtk_stack_get_instance_private (stack); if (priv->tick_id == 0) { priv->tick_id = gtk_widget_add_tick_callback (GTK_WIDGET (stack), gtk_stack_transition_cb, stack, NULL); g_object_notify_by_pspec (G_OBJECT (stack), stack_props[PROP_TRANSITION_RUNNING]); } } static void gtk_stack_unschedule_ticks (GtkStack *stack) { GtkStackPrivate *priv = gtk_stack_get_instance_private (stack); if (priv->tick_id != 0) { gtk_widget_remove_tick_callback (GTK_WIDGET (stack), priv->tick_id); priv->tick_id = 0; g_object_notify_by_pspec (G_OBJECT (stack), stack_props[PROP_TRANSITION_RUNNING]); } } static GtkStackTransitionType effective_transition_type (GtkStack *stack, GtkStackTransitionType transition_type) { if (_gtk_widget_get_direction (GTK_WIDGET (stack)) == GTK_TEXT_DIR_RTL) { switch (transition_type) { case GTK_STACK_TRANSITION_TYPE_SLIDE_LEFT: return GTK_STACK_TRANSITION_TYPE_SLIDE_RIGHT; case GTK_STACK_TRANSITION_TYPE_SLIDE_RIGHT: return GTK_STACK_TRANSITION_TYPE_SLIDE_LEFT; case GTK_STACK_TRANSITION_TYPE_ROTATE_LEFT: return GTK_STACK_TRANSITION_TYPE_ROTATE_RIGHT; case GTK_STACK_TRANSITION_TYPE_ROTATE_RIGHT: return GTK_STACK_TRANSITION_TYPE_ROTATE_LEFT; case GTK_STACK_TRANSITION_TYPE_OVER_LEFT: return GTK_STACK_TRANSITION_TYPE_OVER_RIGHT; case GTK_STACK_TRANSITION_TYPE_OVER_RIGHT: return GTK_STACK_TRANSITION_TYPE_OVER_LEFT; case GTK_STACK_TRANSITION_TYPE_UNDER_LEFT: return GTK_STACK_TRANSITION_TYPE_UNDER_RIGHT; case GTK_STACK_TRANSITION_TYPE_UNDER_RIGHT: return GTK_STACK_TRANSITION_TYPE_UNDER_LEFT; case GTK_STACK_TRANSITION_TYPE_SLIDE_UP: case GTK_STACK_TRANSITION_TYPE_SLIDE_DOWN: case GTK_STACK_TRANSITION_TYPE_OVER_UP: case GTK_STACK_TRANSITION_TYPE_OVER_DOWN: case GTK_STACK_TRANSITION_TYPE_UNDER_UP: case GTK_STACK_TRANSITION_TYPE_UNDER_DOWN: case GTK_STACK_TRANSITION_TYPE_NONE: case GTK_STACK_TRANSITION_TYPE_SLIDE_LEFT_RIGHT: case GTK_STACK_TRANSITION_TYPE_SLIDE_UP_DOWN: case GTK_STACK_TRANSITION_TYPE_OVER_UP_DOWN: case GTK_STACK_TRANSITION_TYPE_OVER_DOWN_UP: case GTK_STACK_TRANSITION_TYPE_OVER_LEFT_RIGHT: case GTK_STACK_TRANSITION_TYPE_OVER_RIGHT_LEFT: case GTK_STACK_TRANSITION_TYPE_CROSSFADE: case GTK_STACK_TRANSITION_TYPE_ROTATE_LEFT_RIGHT: default: return transition_type; } } else { return transition_type; } } static void gtk_stack_start_transition (GtkStack *stack, GtkStackTransitionType transition_type, guint transition_duration) { GtkStackPrivate *priv = gtk_stack_get_instance_private (stack); GtkWidget *widget = GTK_WIDGET (stack); if (gtk_widget_get_mapped (widget) && gtk_settings_get_enable_animations (gtk_widget_get_settings (widget)) && transition_type != GTK_STACK_TRANSITION_TYPE_NONE && transition_duration != 0 && priv->last_visible_child != NULL) { priv->active_transition_type = effective_transition_type (stack, transition_type); priv->first_frame_skipped = FALSE; gtk_stack_schedule_ticks (stack); gtk_progress_tracker_start (&priv->tracker, priv->transition_duration * 1000, 0, 1.0); } else { gtk_stack_unschedule_ticks (stack); priv->active_transition_type = GTK_STACK_TRANSITION_TYPE_NONE; gtk_progress_tracker_finish (&priv->tracker); } gtk_stack_progress_updated (GTK_STACK (widget)); } static void set_visible_child (GtkStack *stack, GtkStackPage *child_info, GtkStackTransitionType transition_type, guint transition_duration) { GtkStackPrivate *priv = gtk_stack_get_instance_private (stack); GtkStackPage *info; GtkWidget *widget = GTK_WIDGET (stack); guint idx; GtkWidget *focus; gboolean contains_focus = FALSE; guint old_pos = GTK_INVALID_LIST_POSITION; guint new_pos = GTK_INVALID_LIST_POSITION; /* if we are being destroyed, do not bother with transitions * and notifications */ if (gtk_widget_in_destruction (widget)) return; /* If none, pick first visible */ if (child_info == NULL) { for (idx = 0; idx < priv->children->len; idx++) { info = g_ptr_array_index (priv->children, idx); if (gtk_widget_get_visible (info->widget)) { child_info = info; break; } } } if (child_info == priv->visible_child) return; if (priv->pages) { guint position; for (idx = 0, position = 0; idx < priv->children->len; idx++, position++) { info = g_ptr_array_index (priv->children, idx); if (info == priv->visible_child) old_pos = position; else if (info == child_info) new_pos = position; } } if (gtk_widget_get_root (widget)) focus = gtk_root_get_focus (gtk_widget_get_root (widget)); else focus = NULL; if (focus && priv->visible_child && priv->visible_child->widget && gtk_widget_is_ancestor (focus, priv->visible_child->widget)) { contains_focus = TRUE; if (priv->visible_child->last_focus) g_object_remove_weak_pointer (G_OBJECT (priv->visible_child->last_focus), (gpointer *)&priv->visible_child->last_focus); priv->visible_child->last_focus = focus; g_object_add_weak_pointer (G_OBJECT (priv->visible_child->last_focus), (gpointer *)&priv->visible_child->last_focus); } if (priv->last_visible_child) gtk_widget_set_child_visible (priv->last_visible_child->widget, FALSE); priv->last_visible_child = NULL; if (priv->visible_child && priv->visible_child->widget) { if (gtk_widget_is_visible (widget)) { priv->last_visible_child = priv->visible_child; priv->last_visible_widget_width = gtk_widget_get_width (widget); priv->last_visible_widget_height = gtk_widget_get_height (widget); } else { gtk_widget_set_child_visible (priv->visible_child->widget, FALSE); } } priv->visible_child = child_info; if (child_info) { gtk_widget_set_child_visible (child_info->widget, TRUE); if (contains_focus) { if (child_info->last_focus) gtk_widget_grab_focus (child_info->last_focus); else gtk_widget_child_focus (child_info->widget, GTK_DIR_TAB_FORWARD); } } if ((child_info == NULL || priv->last_visible_child == NULL) && is_direction_dependent_transition (transition_type)) { transition_type = GTK_STACK_TRANSITION_TYPE_NONE; } else if (is_direction_dependent_transition (transition_type)) { gboolean i_first = FALSE; for (idx = 0; idx < priv->children->len; idx++) { if (child_info == g_ptr_array_index (priv->children, idx)) { i_first = TRUE; break; } if (priv->last_visible_child == g_ptr_array_index (priv->children, idx)) break; } transition_type = get_simple_transition_type (i_first, transition_type); } if (priv->homogeneous[GTK_ORIENTATION_HORIZONTAL] && priv->homogeneous[GTK_ORIENTATION_VERTICAL]) gtk_widget_queue_allocate (widget); else gtk_widget_queue_resize (widget); g_object_notify_by_pspec (G_OBJECT (stack), stack_props[PROP_VISIBLE_CHILD]); g_object_notify_by_pspec (G_OBJECT (stack), stack_props[PROP_VISIBLE_CHILD_NAME]); if (priv->pages) { if (old_pos == GTK_INVALID_LIST_POSITION && new_pos == GTK_INVALID_LIST_POSITION) ; /* nothing to do */ else if (old_pos == GTK_INVALID_LIST_POSITION) gtk_selection_model_selection_changed (priv->pages, new_pos, 1); else if (new_pos == GTK_INVALID_LIST_POSITION) gtk_selection_model_selection_changed (priv->pages, old_pos, 1); else gtk_selection_model_selection_changed (priv->pages, MIN (old_pos, new_pos), MAX (old_pos, new_pos) - MIN (old_pos, new_pos) + 1); } gtk_stack_start_transition (stack, transition_type, transition_duration); } static void update_child_visible (GtkStack *stack, GtkStackPage *child_info) { GtkStackPrivate *priv = gtk_stack_get_instance_private (stack); gboolean visible; visible = child_info->visible && gtk_widget_get_visible (child_info->widget); if (priv->visible_child == NULL && visible) set_visible_child (stack, child_info, priv->transition_type, priv->transition_duration); else if (priv->visible_child == child_info && !visible) set_visible_child (stack, NULL, priv->transition_type, priv->transition_duration); if (child_info == priv->last_visible_child) { gtk_widget_set_child_visible (priv->last_visible_child->widget, FALSE); priv->last_visible_child = NULL; } gtk_accessible_update_state (GTK_ACCESSIBLE (child_info), GTK_ACCESSIBLE_STATE_HIDDEN, !visible, -1); } static void stack_child_visibility_notify_cb (GObject *obj, GParamSpec *pspec, gpointer user_data) { GtkStack *stack = GTK_STACK (user_data); GtkStackPage *child_info; child_info = find_child_info_for_widget (stack, GTK_WIDGET (obj)); g_return_if_fail (child_info != NULL); update_child_visible (stack, child_info); } /** * gtk_stack_add_titled: * @stack: a `GtkStack` * @child: the widget to add * @name: (nullable): the name for @child * @title: a human-readable title for @child * * Adds a child to @stack. * * The child is identified by the @name. The @title * will be used by `GtkStackSwitcher` to represent * @child in a tab bar, so it should be short. * * Returns: (transfer none): the `GtkStackPage` for @child */ GtkStackPage * gtk_stack_add_titled (GtkStack *stack, GtkWidget *child, const char *name, const char *title) { g_return_val_if_fail (GTK_IS_STACK (stack), NULL); g_return_val_if_fail (GTK_IS_WIDGET (child), NULL); return gtk_stack_add_internal (stack, child, name, title); } /** * gtk_stack_add_child: * @stack: a `GtkStack` * @child: the widget to add * * Adds a child to @stack. * * Returns: (transfer none): the `GtkStackPage` for @child */ GtkStackPage * gtk_stack_add_child (GtkStack *stack, GtkWidget *child) { g_return_val_if_fail (GTK_IS_STACK (stack), NULL); g_return_val_if_fail (GTK_IS_WIDGET (child), NULL); return gtk_stack_add_internal (stack, child, NULL, NULL); } /** * gtk_stack_add_named: * @stack: a `GtkStack` * @child: the widget to add * @name: (nullable): the name for @child * * Adds a child to @stack. * * The child is identified by the @name. * * Returns: (transfer none): the `GtkStackPage` for @child */ GtkStackPage * gtk_stack_add_named (GtkStack *stack, GtkWidget *child, const char *name) { g_return_val_if_fail (GTK_IS_STACK (stack), NULL); g_return_val_if_fail (GTK_IS_WIDGET (child), NULL); return gtk_stack_add_internal (stack, child, name, NULL); } static GtkStackPage * gtk_stack_add_internal (GtkStack *stack, GtkWidget *child, const char *name, const char *title) { GtkStackPage *child_info; g_return_val_if_fail (child != NULL, NULL); child_info = g_object_new (GTK_TYPE_STACK_PAGE, "child", child, "name", name, "title", title, NULL); gtk_stack_add_page (stack, child_info); g_object_unref (child_info); return child_info; } static void gtk_stack_add_page (GtkStack *stack, GtkStackPage *child_info) { GtkStackPrivate *priv = gtk_stack_get_instance_private (stack); guint idx; g_return_if_fail (child_info->widget != NULL); if (child_info->name) { for (idx = 0; idx < priv->children->len; idx++) { GtkStackPage *info = g_ptr_array_index (priv->children, idx); if (info->name && g_strcmp0 (info->name, child_info->name) == 0) { g_warning ("While adding page: duplicate child name in GtkStack: %s", child_info->name); break; } } } if (priv->children->len > 0) { GtkStackPage *prev_last = g_ptr_array_index (priv->children, priv->children->len - 1); prev_last->next_page = child_info; } else { child_info->next_page = NULL; } g_ptr_array_add (priv->children, g_object_ref (child_info)); gtk_widget_set_child_visible (child_info->widget, FALSE); gtk_widget_set_parent (child_info->widget, GTK_WIDGET (stack)); if (priv->pages) { g_list_model_items_changed (G_LIST_MODEL (priv->pages), priv->children->len - 1, 0, 1); g_object_notify_by_pspec (G_OBJECT (priv->pages), pages_properties[PAGES_PROP_N_ITEMS]); } g_signal_connect (child_info->widget, "notify::visible", G_CALLBACK (stack_child_visibility_notify_cb), stack); if (priv->visible_child == NULL && gtk_widget_get_visible (child_info->widget)) set_visible_child (stack, child_info, priv->transition_type, priv->transition_duration); if (priv->homogeneous[GTK_ORIENTATION_HORIZONTAL] || priv->homogeneous[GTK_ORIENTATION_VERTICAL] || priv->visible_child == child_info) gtk_widget_queue_resize (GTK_WIDGET (stack)); } static void stack_remove (GtkStack *stack, GtkWidget *child, gboolean in_dispose) { GtkStackPrivate *priv = gtk_stack_get_instance_private (stack); GtkStackPage *child_info; gboolean was_visible; child_info = find_child_info_for_widget (stack, child); if (child_info == NULL) return; g_signal_handlers_disconnect_by_func (child, stack_child_visibility_notify_cb, stack); was_visible = gtk_widget_get_visible (child); if (priv->visible_child == child_info) priv->visible_child = NULL; if (priv->last_visible_child == child_info) priv->last_visible_child = NULL; gtk_widget_unparent (child); g_clear_object (&child_info->widget); g_ptr_array_remove (priv->children, child_info); for (guint prev_idx = 0; prev_idx < priv->children->len; prev_idx++) { GtkStackPage *prev_page = g_ptr_array_index (priv->children, prev_idx); if (prev_page->next_page == child_info) { prev_page->next_page = child_info->next_page; break; } } g_object_unref (child_info); if (!in_dispose && (priv->homogeneous[GTK_ORIENTATION_HORIZONTAL] || priv->homogeneous[GTK_ORIENTATION_VERTICAL]) && was_visible) gtk_widget_queue_resize (GTK_WIDGET (stack)); } /** * gtk_stack_remove: * @stack: a `GtkStack` * @child: the child to remove * * Removes a child widget from @stack. */ void gtk_stack_remove (GtkStack *stack, GtkWidget *child) { GtkStackPrivate *priv = gtk_stack_get_instance_private (stack); guint position; g_return_if_fail (GTK_IS_STACK (stack)); g_return_if_fail (GTK_IS_WIDGET (child)); g_return_if_fail (gtk_widget_get_parent (child) == GTK_WIDGET (stack)); for (position = 0; position < priv->children->len; position++) { GtkStackPage *page = g_ptr_array_index (priv->children, position); if (page->widget == child) break; } stack_remove (stack, child, FALSE); if (priv->pages) { g_list_model_items_changed (G_LIST_MODEL (priv->pages), position, 1, 0); g_object_notify_by_pspec (G_OBJECT (priv->pages), pages_properties[PAGES_PROP_N_ITEMS]); } } /** * gtk_stack_get_page: * @stack: a `GtkStack` * @child: a child of @stack * * Returns the `GtkStackPage` object for @child. * * Returns: (transfer none): the `GtkStackPage` for @child */ GtkStackPage * gtk_stack_get_page (GtkStack *stack, GtkWidget *child) { return find_child_info_for_widget (stack, child); } /** * gtk_stack_get_child_by_name: * @stack: a `GtkStack` * @name: the name of the child to find * * Finds the child with the name given as the argument. * * Returns %NULL if there is no child with this name. * * Returns: (transfer none) (nullable): the requested child * of the `GtkStack` */ GtkWidget * gtk_stack_get_child_by_name (GtkStack *stack, const char *name) { GtkStackPrivate *priv = gtk_stack_get_instance_private (stack); GtkStackPage *info; guint idx; g_return_val_if_fail (GTK_IS_STACK (stack), NULL); g_return_val_if_fail (name != NULL, NULL); for (idx = 0; idx < priv->children->len; idx++) { info = g_ptr_array_index (priv->children, idx); if (info->name && strcmp (info->name, name) == 0) return info->widget; } return NULL; } /** * gtk_stack_page_get_child: (attributes org.gtk.Method.get_property=child) * @self: a `GtkStackPage` * * Returns the stack child to which @self belongs. * * Returns: (transfer none): the child to which @self belongs */ GtkWidget * gtk_stack_page_get_child (GtkStackPage *self) { return self->widget; } /** * gtk_stack_set_hhomogeneous: (attributes org.gtk.Method.set_property=hhomogeneous) * @stack: a `GtkStack` * @hhomogeneous: %TRUE to make @stack horizontally homogeneous * * Sets the `GtkStack` to be horizontally homogeneous or not. * * If it is homogeneous, the `GtkStack` will request the same * width for all its children. If it isn't, the stack * may change width when a different child becomes visible. */ void gtk_stack_set_hhomogeneous (GtkStack *stack, gboolean hhomogeneous) { GtkStackPrivate *priv = gtk_stack_get_instance_private (stack); g_return_if_fail (GTK_IS_STACK (stack)); hhomogeneous = !!hhomogeneous; if (priv->homogeneous[GTK_ORIENTATION_HORIZONTAL] == hhomogeneous) return; priv->homogeneous[GTK_ORIENTATION_HORIZONTAL] = hhomogeneous; if (gtk_widget_get_visible (GTK_WIDGET(stack))) gtk_widget_queue_resize (GTK_WIDGET (stack)); g_object_notify_by_pspec (G_OBJECT (stack), stack_props[PROP_HHOMOGENEOUS]); } /** * gtk_stack_get_hhomogeneous: (attributes org.gtk.Method.get_property=hhomogeneous) * @stack: a `GtkStack` * * Gets whether @stack is horizontally homogeneous. * * Returns: whether @stack is horizontally homogeneous. */ gboolean gtk_stack_get_hhomogeneous (GtkStack *stack) { GtkStackPrivate *priv = gtk_stack_get_instance_private (stack); g_return_val_if_fail (GTK_IS_STACK (stack), FALSE); return priv->homogeneous[GTK_ORIENTATION_HORIZONTAL]; } /** * gtk_stack_set_vhomogeneous: (attributes org.gtk.Method.set_property=vhomogeneous) * @stack: a `GtkStack` * @vhomogeneous: %TRUE to make @stack vertically homogeneous * * Sets the `GtkStack` to be vertically homogeneous or not. * * If it is homogeneous, the `GtkStack` will request the same * height for all its children. If it isn't, the stack * may change height when a different child becomes visible. */ void gtk_stack_set_vhomogeneous (GtkStack *stack, gboolean vhomogeneous) { GtkStackPrivate *priv = gtk_stack_get_instance_private (stack); g_return_if_fail (GTK_IS_STACK (stack)); vhomogeneous = !!vhomogeneous; if (priv->homogeneous[GTK_ORIENTATION_VERTICAL] == vhomogeneous) return; priv->homogeneous[GTK_ORIENTATION_VERTICAL] = vhomogeneous; if (gtk_widget_get_visible (GTK_WIDGET(stack))) gtk_widget_queue_resize (GTK_WIDGET (stack)); g_object_notify_by_pspec (G_OBJECT (stack), stack_props[PROP_VHOMOGENEOUS]); } /** * gtk_stack_get_vhomogeneous: (attributes org.gtk.Method.get_property=vhomogeneous) * @stack: a `GtkStack` * * Gets whether @stack is vertically homogeneous. * * Returns: whether @stack is vertically homogeneous. */ gboolean gtk_stack_get_vhomogeneous (GtkStack *stack) { GtkStackPrivate *priv = gtk_stack_get_instance_private (stack); g_return_val_if_fail (GTK_IS_STACK (stack), FALSE); return priv->homogeneous[GTK_ORIENTATION_VERTICAL]; } /** * gtk_stack_get_transition_duration: (attributes org.gtk.Method.get_property=transition-duration) * @stack: a `GtkStack` * * Returns the amount of time (in milliseconds) that * transitions between pages in @stack will take. * * Returns: the transition duration */ guint gtk_stack_get_transition_duration (GtkStack *stack) { GtkStackPrivate *priv = gtk_stack_get_instance_private (stack); g_return_val_if_fail (GTK_IS_STACK (stack), 0); return priv->transition_duration; } /** * gtk_stack_set_transition_duration: (attributes org.gtk.Method.set_property=transition-duration) * @stack: a `GtkStack` * @duration: the new duration, in milliseconds * * Sets the duration that transitions between pages in @stack * will take. */ void gtk_stack_set_transition_duration (GtkStack *stack, guint duration) { GtkStackPrivate *priv = gtk_stack_get_instance_private (stack); g_return_if_fail (GTK_IS_STACK (stack)); if (priv->transition_duration == duration) return; priv->transition_duration = duration; g_object_notify_by_pspec (G_OBJECT (stack), stack_props[PROP_TRANSITION_DURATION]); } /** * gtk_stack_get_transition_type: (attributes org.gtk.Method.get_property=transition-type) * @stack: a `GtkStack` * * Gets the type of animation that will be used * for transitions between pages in @stack. * * Returns: the current transition type of @stack */ GtkStackTransitionType gtk_stack_get_transition_type (GtkStack *stack) { GtkStackPrivate *priv = gtk_stack_get_instance_private (stack); g_return_val_if_fail (GTK_IS_STACK (stack), GTK_STACK_TRANSITION_TYPE_NONE); return priv->transition_type; } /** * gtk_stack_set_transition_type: (attributes org.gtk.Method.set_property=transition-type) * @stack: a `GtkStack` * @transition: the new transition type * * Sets the type of animation that will be used for * transitions between pages in @stack. * * Available types include various kinds of fades and slides. * * The transition type can be changed without problems * at runtime, so it is possible to change the animation * based on the page that is about to become current. */ void gtk_stack_set_transition_type (GtkStack *stack, GtkStackTransitionType transition) { GtkStackPrivate *priv = gtk_stack_get_instance_private (stack); g_return_if_fail (GTK_IS_STACK (stack)); if (priv->transition_type == transition) return; priv->transition_type = transition; g_object_notify_by_pspec (G_OBJECT (stack), stack_props[PROP_TRANSITION_TYPE]); } /** * gtk_stack_get_transition_running: (attributes org.gtk.Method.get_property=transition-running) * @stack: a `GtkStack` * * Returns whether the @stack is currently in a transition from one page to * another. * * Returns: %TRUE if the transition is currently running, %FALSE otherwise. */ gboolean gtk_stack_get_transition_running (GtkStack *stack) { GtkStackPrivate *priv = gtk_stack_get_instance_private (stack); g_return_val_if_fail (GTK_IS_STACK (stack), FALSE); return (priv->tick_id != 0); } /** * gtk_stack_set_interpolate_size: (attributes org.gtk.Method.set_property=interpolate-size) * @stack: A `GtkStack` * @interpolate_size: the new value * * Sets whether or not @stack will interpolate its size when * changing the visible child. * * If the [property@Gtk.Stack:interpolate-size] property is set * to %TRUE, @stack will interpolate its size between the current * one and the one it'll take after changing the visible child, * according to the set transition duration. */ void gtk_stack_set_interpolate_size (GtkStack *stack, gboolean interpolate_size) { GtkStackPrivate *priv = gtk_stack_get_instance_private (stack); g_return_if_fail (GTK_IS_STACK (stack)); interpolate_size = !!interpolate_size; if (priv->interpolate_size == interpolate_size) return; priv->interpolate_size = interpolate_size; g_object_notify_by_pspec (G_OBJECT (stack), stack_props[PROP_INTERPOLATE_SIZE]); } /** * gtk_stack_get_interpolate_size: (attributes org.gtk.Method.get_property=interpolate-size) * @stack: A `GtkStack` * * Returns whether the `GtkStack` is set up to interpolate between * the sizes of children on page switch. * * Returns: %TRUE if child sizes are interpolated */ gboolean gtk_stack_get_interpolate_size (GtkStack *stack) { GtkStackPrivate *priv = gtk_stack_get_instance_private (stack); g_return_val_if_fail (GTK_IS_STACK (stack), FALSE); return priv->interpolate_size; } /** * gtk_stack_get_visible_child: (attributes org.gtk.Method.get_property=visible-child) * @stack: a `GtkStack` * * Gets the currently visible child of @stack. * * Returns %NULL if there are no visible children. * * Returns: (transfer none) (nullable): the visible child of the `GtkStack` */ GtkWidget * gtk_stack_get_visible_child (GtkStack *stack) { GtkStackPrivate *priv = gtk_stack_get_instance_private (stack); g_return_val_if_fail (GTK_IS_STACK (stack), NULL); return priv->visible_child ? priv->visible_child->widget : NULL; } /** * gtk_stack_get_visible_child_name: (attributes org.gtk.Method.get_property=visible-child-name) * @stack: a `GtkStack` * * Returns the name of the currently visible child of @stack. * * Returns %NULL if there is no visible child. * * Returns: (transfer none) (nullable): the name of the visible child * of the `GtkStack` */ const char * gtk_stack_get_visible_child_name (GtkStack *stack) { GtkStackPrivate *priv = gtk_stack_get_instance_private (stack); g_return_val_if_fail (GTK_IS_STACK (stack), NULL); if (priv->visible_child) return priv->visible_child->name; return NULL; } /** * gtk_stack_set_visible_child: (attributes org.gtk.Method.set_property=visible-child) * @stack: a `GtkStack` * @child: a child of @stack * * Makes @child the visible child of @stack. * * If @child is different from the currently visible child, * the transition between the two will be animated with the * current transition type of @stack. * * Note that the @child widget has to be visible itself * (see [method@Gtk.Widget.show]) in order to become the visible * child of @stack. */ void gtk_stack_set_visible_child (GtkStack *stack, GtkWidget *child) { GtkStackPrivate *priv = gtk_stack_get_instance_private (stack); GtkStackPage *child_info; g_return_if_fail (GTK_IS_STACK (stack)); g_return_if_fail (GTK_IS_WIDGET (child)); child_info = find_child_info_for_widget (stack, child); if (child_info == NULL) { g_warning ("Given child of type '%s' not found in GtkStack", G_OBJECT_TYPE_NAME (child)); return; } if (gtk_widget_get_visible (child_info->widget)) set_visible_child (stack, child_info, priv->transition_type, priv->transition_duration); } /** * gtk_stack_set_visible_child_name: (attributes org.gtk.Method.set_property=visible-child-name) * @stack: a `GtkStack` * @name: the name of the child to make visible * * Makes the child with the given name visible. * * If @child is different from the currently visible child, * the transition between the two will be animated with the * current transition type of @stack. * * Note that the child widget has to be visible itself * (see [method@Gtk.Widget.show]) in order to become the visible * child of @stack. */ void gtk_stack_set_visible_child_name (GtkStack *stack, const char *name) { GtkStackPrivate *priv = gtk_stack_get_instance_private (stack); g_return_if_fail (GTK_IS_STACK (stack)); gtk_stack_set_visible_child_full (stack, name, priv->transition_type); } /** * gtk_stack_set_visible_child_full: * @stack: a `GtkStack` * @name: the name of the child to make visible * @transition: the transition type to use * * Makes the child with the given name visible. * * Note that the child widget has to be visible itself * (see [method@Gtk.Widget.show]) in order to become the visible * child of @stack. */ void gtk_stack_set_visible_child_full (GtkStack *stack, const char *name, GtkStackTransitionType transition) { GtkStackPrivate *priv = gtk_stack_get_instance_private (stack); GtkStackPage *child_info, *info; guint idx; g_return_if_fail (GTK_IS_STACK (stack)); if (name == NULL) return; child_info = NULL; for (idx = 0; idx < priv->children->len; idx++) { info = g_ptr_array_index (priv->children, idx); if (info->name != NULL && strcmp (info->name, name) == 0) { child_info = info; break; } } if (child_info == NULL) { g_warning ("Child name '%s' not found in GtkStack", name); return; } if (gtk_widget_get_visible (child_info->widget)) set_visible_child (stack, child_info, transition, priv->transition_duration); } static void gtk_stack_compute_expand (GtkWidget *widget, gboolean *hexpand_p, gboolean *vexpand_p) { GtkStack *stack = GTK_STACK (widget); GtkStackPrivate *priv = gtk_stack_get_instance_private (stack); gboolean hexpand, vexpand; GtkStackPage *child_info; GtkWidget *child; guint idx; hexpand = FALSE; vexpand = FALSE; for (idx = 0; idx < priv->children->len; idx++) { child_info = g_ptr_array_index (priv->children, idx); child = child_info->widget; if (!hexpand && gtk_widget_compute_expand (child, GTK_ORIENTATION_HORIZONTAL)) hexpand = TRUE; if (!vexpand && gtk_widget_compute_expand (child, GTK_ORIENTATION_VERTICAL)) vexpand = TRUE; if (hexpand && vexpand) break; } *hexpand_p = hexpand; *vexpand_p = vexpand; } static GtkSizeRequestMode gtk_stack_get_request_mode (GtkWidget *widget) { GtkWidget *w; int wfh = 0, hfw = 0; for (w = gtk_widget_get_first_child (widget); w != NULL; w = gtk_widget_get_next_sibling (w)) { GtkSizeRequestMode mode = gtk_widget_get_request_mode (w); switch (mode) { case GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH: hfw ++; break; case GTK_SIZE_REQUEST_WIDTH_FOR_HEIGHT: wfh ++; break; case GTK_SIZE_REQUEST_CONSTANT_SIZE: default: break; } } if (hfw == 0 && wfh == 0) return GTK_SIZE_REQUEST_CONSTANT_SIZE; else return wfh > hfw ? GTK_SIZE_REQUEST_WIDTH_FOR_HEIGHT : GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH; } static void gtk_stack_snapshot_crossfade (GtkWidget *widget, GtkSnapshot *snapshot) { GtkStack *stack = GTK_STACK (widget); GtkStackPrivate *priv = gtk_stack_get_instance_private (stack); double progress = gtk_progress_tracker_get_progress (&priv->tracker, FALSE); gtk_snapshot_push_cross_fade (snapshot, progress); if (priv->last_visible_child) { gtk_widget_snapshot_child (widget, priv->last_visible_child->widget, snapshot); } gtk_snapshot_pop (snapshot); gtk_widget_snapshot_child (widget, priv->visible_child->widget, snapshot); gtk_snapshot_pop (snapshot); } static void gtk_stack_snapshot_under (GtkWidget *widget, GtkSnapshot *snapshot) { GtkStack *stack = GTK_STACK (widget); GtkStackPrivate *priv = gtk_stack_get_instance_private (stack); int widget_width, widget_height; int x, y, width, height, pos_x, pos_y; x = y = 0; width = widget_width = gtk_widget_get_width (widget); height = widget_height = gtk_widget_get_height (widget); pos_x = pos_y = 0; switch ((guint) priv->active_transition_type) { case GTK_STACK_TRANSITION_TYPE_UNDER_DOWN: y = 0; height = widget_height * (gtk_progress_tracker_get_ease_out_cubic (&priv->tracker, FALSE)); pos_y = height; break; case GTK_STACK_TRANSITION_TYPE_UNDER_UP: y = widget_height * (1 - gtk_progress_tracker_get_ease_out_cubic (&priv->tracker, FALSE)); height = widget_height - y; pos_y = y - widget_height; break; case GTK_STACK_TRANSITION_TYPE_UNDER_LEFT: x = widget_width * (1 - gtk_progress_tracker_get_ease_out_cubic (&priv->tracker, FALSE)); width = widget_width - x; pos_x = x - widget_width; break; case GTK_STACK_TRANSITION_TYPE_UNDER_RIGHT: x = 0; width = widget_width * (gtk_progress_tracker_get_ease_out_cubic (&priv->tracker, FALSE)); pos_x = width; break; default: g_assert_not_reached (); } gtk_snapshot_push_clip (snapshot, &GRAPHENE_RECT_INIT(x, y, width, height)); gtk_widget_snapshot_child (widget, priv->visible_child->widget, snapshot); gtk_snapshot_pop (snapshot); if (priv->last_visible_child) { gtk_snapshot_save (snapshot); gtk_snapshot_translate (snapshot, &GRAPHENE_POINT_INIT (pos_x, pos_y)); gtk_widget_snapshot_child (widget, priv->last_visible_child->widget, snapshot); gtk_snapshot_restore (snapshot); } } static void gtk_stack_snapshot_cube (GtkWidget *widget, GtkSnapshot *snapshot) { GtkStack *stack = GTK_STACK (widget); GtkStackPrivate *priv = gtk_stack_get_instance_private (stack); double progress = gtk_progress_tracker_get_progress (&priv->tracker, FALSE); g_assert (priv->active_transition_type == GTK_STACK_TRANSITION_TYPE_ROTATE_RIGHT || priv->active_transition_type == GTK_STACK_TRANSITION_TYPE_ROTATE_LEFT); if (priv->active_transition_type == GTK_STACK_TRANSITION_TYPE_ROTATE_RIGHT) progress = 1 - progress; if (priv->last_visible_child && progress > 0.5) { gtk_snapshot_save (snapshot); gtk_snapshot_translate_3d (snapshot, &GRAPHENE_POINT3D_INIT ( gtk_widget_get_width (widget) / 2.f, gtk_widget_get_height (widget) / 2.f, 0)); gtk_snapshot_perspective (snapshot, 2 * gtk_widget_get_width (widget) / 1.f); gtk_snapshot_translate_3d (snapshot, &GRAPHENE_POINT3D_INIT ( 0, 0, - gtk_widget_get_width (widget) / 2.f)); gtk_snapshot_rotate_3d (snapshot, -90 * progress, graphene_vec3_y_axis()); gtk_snapshot_translate_3d (snapshot, &GRAPHENE_POINT3D_INIT ( - gtk_widget_get_width (widget) / 2.f, - gtk_widget_get_height (widget) / 2.f, gtk_widget_get_width (widget) / 2.f)); if (priv->active_transition_type == GTK_STACK_TRANSITION_TYPE_ROTATE_LEFT) gtk_widget_snapshot_child (widget, priv->last_visible_child->widget, snapshot); else gtk_widget_snapshot_child (widget, priv->visible_child->widget, snapshot); gtk_snapshot_restore (snapshot); } gtk_snapshot_save (snapshot); gtk_snapshot_translate_3d (snapshot, &GRAPHENE_POINT3D_INIT ( gtk_widget_get_width (widget) / 2.f, gtk_widget_get_height (widget) / 2.f, 0)); gtk_snapshot_perspective (snapshot, 2 * gtk_widget_get_width (widget) / 1.f); gtk_snapshot_translate_3d (snapshot, &GRAPHENE_POINT3D_INIT ( 0, 0, - gtk_widget_get_width (widget) / 2.f)); gtk_snapshot_rotate_3d (snapshot, 90 * (1.0 - progress), graphene_vec3_y_axis()); gtk_snapshot_translate_3d (snapshot, &GRAPHENE_POINT3D_INIT ( - gtk_widget_get_width (widget) / 2.f, - gtk_widget_get_height (widget) / 2.f, gtk_widget_get_width (widget) / 2.f)); if (priv->active_transition_type == GTK_STACK_TRANSITION_TYPE_ROTATE_LEFT) gtk_widget_snapshot_child (widget, priv->visible_child->widget, snapshot); else if (priv->last_visible_child) gtk_widget_snapshot_child (widget, priv->last_visible_child->widget, snapshot); gtk_snapshot_restore (snapshot); if (priv->last_visible_child && progress <= 0.5) { gtk_snapshot_save (snapshot); gtk_snapshot_translate_3d (snapshot, &GRAPHENE_POINT3D_INIT ( gtk_widget_get_width (widget) / 2.f, gtk_widget_get_height (widget) / 2.f, 0)); gtk_snapshot_perspective (snapshot, 2 * gtk_widget_get_width (widget) / 1.f); gtk_snapshot_translate_3d (snapshot, &GRAPHENE_POINT3D_INIT ( 0, 0, - gtk_widget_get_width (widget) / 2.f)); gtk_snapshot_rotate_3d (snapshot, -90 * progress, graphene_vec3_y_axis()); gtk_snapshot_translate_3d (snapshot, &GRAPHENE_POINT3D_INIT ( - gtk_widget_get_width (widget) / 2.f, - gtk_widget_get_height (widget) / 2.f, gtk_widget_get_width (widget) / 2.f)); if (priv->active_transition_type == GTK_STACK_TRANSITION_TYPE_ROTATE_LEFT) gtk_widget_snapshot_child (widget, priv->last_visible_child->widget, snapshot); else gtk_widget_snapshot_child (widget, priv->visible_child->widget, snapshot); gtk_snapshot_restore (snapshot); } } static void gtk_stack_snapshot_slide (GtkWidget *widget, GtkSnapshot *snapshot) { GtkStack *stack = GTK_STACK (widget); GtkStackPrivate *priv = gtk_stack_get_instance_private (stack); if (priv->last_visible_child) { int x, y; int width, height; width = gtk_widget_get_width (widget); height = gtk_widget_get_height (widget); x = get_bin_window_x (stack); y = get_bin_window_y (stack); switch ((guint) priv->active_transition_type) { case GTK_STACK_TRANSITION_TYPE_SLIDE_LEFT: x -= width; break; case GTK_STACK_TRANSITION_TYPE_SLIDE_RIGHT: x += width; break; case GTK_STACK_TRANSITION_TYPE_SLIDE_UP: y -= height; break; case GTK_STACK_TRANSITION_TYPE_SLIDE_DOWN: y += height; break; case GTK_STACK_TRANSITION_TYPE_OVER_UP: case GTK_STACK_TRANSITION_TYPE_OVER_DOWN: y = 0; break; case GTK_STACK_TRANSITION_TYPE_OVER_LEFT: case GTK_STACK_TRANSITION_TYPE_OVER_RIGHT: x = 0; break; default: g_assert_not_reached (); break; } if (priv->last_visible_child != NULL) { if (gtk_widget_get_valign (priv->last_visible_child->widget) == GTK_ALIGN_END && priv->last_visible_widget_height > height) y -= priv->last_visible_widget_height - height; else if (gtk_widget_get_valign (priv->last_visible_child->widget) == GTK_ALIGN_CENTER) y -= (priv->last_visible_widget_height - height) / 2; } gtk_snapshot_save (snapshot); gtk_snapshot_translate (snapshot, &GRAPHENE_POINT_INIT (x, y)); gtk_widget_snapshot_child (widget, priv->last_visible_child->widget, snapshot); gtk_snapshot_restore (snapshot); } gtk_widget_snapshot_child (widget, priv->visible_child->widget, snapshot); } static void gtk_stack_snapshot (GtkWidget *widget, GtkSnapshot *snapshot) { GtkStack *stack = GTK_STACK (widget); GtkStackPrivate *priv = gtk_stack_get_instance_private (stack); if (priv->visible_child) { if (gtk_progress_tracker_get_state (&priv->tracker) != GTK_PROGRESS_STATE_AFTER) { gtk_snapshot_push_clip (snapshot, &GRAPHENE_RECT_INIT( 0, 0, gtk_widget_get_width (widget), gtk_widget_get_height (widget) )); switch (priv->active_transition_type) { case GTK_STACK_TRANSITION_TYPE_CROSSFADE: gtk_stack_snapshot_crossfade (widget, snapshot); break; case GTK_STACK_TRANSITION_TYPE_SLIDE_LEFT: case GTK_STACK_TRANSITION_TYPE_SLIDE_RIGHT: case GTK_STACK_TRANSITION_TYPE_SLIDE_UP: case GTK_STACK_TRANSITION_TYPE_SLIDE_DOWN: case GTK_STACK_TRANSITION_TYPE_OVER_UP: case GTK_STACK_TRANSITION_TYPE_OVER_DOWN: case GTK_STACK_TRANSITION_TYPE_OVER_LEFT: case GTK_STACK_TRANSITION_TYPE_OVER_RIGHT: gtk_stack_snapshot_slide (widget, snapshot); break; case GTK_STACK_TRANSITION_TYPE_UNDER_UP: case GTK_STACK_TRANSITION_TYPE_UNDER_DOWN: case GTK_STACK_TRANSITION_TYPE_UNDER_LEFT: case GTK_STACK_TRANSITION_TYPE_UNDER_RIGHT: gtk_stack_snapshot_under (widget, snapshot); break; case GTK_STACK_TRANSITION_TYPE_ROTATE_LEFT: case GTK_STACK_TRANSITION_TYPE_ROTATE_RIGHT: gtk_stack_snapshot_cube (widget, snapshot); break; case GTK_STACK_TRANSITION_TYPE_NONE: case GTK_STACK_TRANSITION_TYPE_SLIDE_LEFT_RIGHT: case GTK_STACK_TRANSITION_TYPE_SLIDE_UP_DOWN: case GTK_STACK_TRANSITION_TYPE_OVER_UP_DOWN: case GTK_STACK_TRANSITION_TYPE_OVER_DOWN_UP: case GTK_STACK_TRANSITION_TYPE_OVER_LEFT_RIGHT: case GTK_STACK_TRANSITION_TYPE_OVER_RIGHT_LEFT: case GTK_STACK_TRANSITION_TYPE_ROTATE_LEFT_RIGHT: default: g_assert_not_reached (); } gtk_snapshot_pop (snapshot); } else gtk_widget_snapshot_child (widget, priv->visible_child->widget, snapshot); } } static void gtk_stack_size_allocate (GtkWidget *widget, int width, int height, int baseline) { GtkStack *stack = GTK_STACK (widget); GtkStackPrivate *priv = gtk_stack_get_instance_private (stack); GtkAllocation child_allocation; if (priv->last_visible_child) { int child_width, child_height; int min, nat; gtk_widget_measure (priv->last_visible_child->widget, GTK_ORIENTATION_HORIZONTAL, -1, &min, &nat, NULL, NULL); child_width = MAX (min, width); gtk_widget_measure (priv->last_visible_child->widget, GTK_ORIENTATION_VERTICAL, child_width, &min, &nat, NULL, NULL); child_height = MAX (min, height); gtk_widget_size_allocate (priv->last_visible_child->widget, &(GtkAllocation) { 0, 0, child_width, child_height }, -1); } child_allocation.x = get_bin_window_x (stack); child_allocation.y = get_bin_window_y (stack); child_allocation.width = width; child_allocation.height = height; if (priv->visible_child) { int min_width; int min_height; gtk_widget_measure (priv->visible_child->widget, GTK_ORIENTATION_HORIZONTAL, height, &min_width, NULL, NULL, NULL); child_allocation.width = MAX (child_allocation.width, min_width); gtk_widget_measure (priv->visible_child->widget, GTK_ORIENTATION_VERTICAL, child_allocation.width, &min_height, NULL, NULL, NULL); child_allocation.height = MAX (child_allocation.height, min_height); if (child_allocation.width > width) { GtkAlign halign = gtk_widget_get_halign (priv->visible_child->widget); if (halign == GTK_ALIGN_CENTER || halign == GTK_ALIGN_FILL) child_allocation.x = (width - child_allocation.width) / 2; else if (halign == GTK_ALIGN_END) child_allocation.x = (width - child_allocation.width); } if (child_allocation.height > height) { GtkAlign valign = gtk_widget_get_valign (priv->visible_child->widget); if (valign == GTK_ALIGN_CENTER || valign == GTK_ALIGN_FILL) child_allocation.y = (height - child_allocation.height) / 2; else if (valign == GTK_ALIGN_END) child_allocation.y = (height - child_allocation.height); } gtk_widget_size_allocate (priv->visible_child->widget, &child_allocation, -1); } } #define LERP(a, b, t) ((a) + (((b) - (a)) * (1.0 - (t)))) static void gtk_stack_measure (GtkWidget *widget, GtkOrientation orientation, int for_size, int *minimum, int *natural, int *minimum_baseline, int *natural_baseline) { GtkStack *stack = GTK_STACK (widget); GtkStackPrivate *priv = gtk_stack_get_instance_private (stack); GtkStackPage *child_info; GtkWidget *child; int child_min, child_nat; guint idx; *minimum = 0; *natural = 0; for (idx = 0; idx < priv->children->len; idx++) { child_info = g_ptr_array_index (priv->children, idx); child = child_info->widget; if (!priv->homogeneous[orientation] && priv->visible_child != child_info) continue; if (gtk_widget_get_visible (child)) { if (!priv->homogeneous[OPPOSITE_ORIENTATION(orientation)] && priv->visible_child != child_info) { int min_for_size; gtk_widget_measure (child, OPPOSITE_ORIENTATION (orientation), -1, &min_for_size, NULL, NULL, NULL); gtk_widget_measure (child, orientation, MAX (min_for_size, for_size), &child_min, &child_nat, NULL, NULL); } else gtk_widget_measure (child, orientation, for_size, &child_min, &child_nat, NULL, NULL); *minimum = MAX (*minimum, child_min); *natural = MAX (*natural, child_nat); } } if (priv->last_visible_child != NULL && !priv->homogeneous[orientation]) { double t = priv->interpolate_size ? gtk_progress_tracker_get_ease_out_cubic (&priv->tracker, FALSE) : 1.0; int last_size; if (orientation == GTK_ORIENTATION_HORIZONTAL) last_size = priv->last_visible_widget_width; else last_size = priv->last_visible_widget_height; *minimum = LERP (*minimum, last_size, t); *natural = LERP (*natural, last_size, t); } } static void gtk_stack_init (GtkStack *stack) { GtkStackPrivate *priv = gtk_stack_get_instance_private (stack); priv->homogeneous[GTK_ORIENTATION_VERTICAL] = TRUE; priv->homogeneous[GTK_ORIENTATION_HORIZONTAL] = TRUE; priv->transition_duration = 200; priv->transition_type = GTK_STACK_TRANSITION_TYPE_NONE; priv->children = g_ptr_array_new(); } /** * gtk_stack_get_pages: (attributes org.gtk.Method.get_property=pages) * @stack: a `GtkStack` * * Returns a `GListModel` that contains the pages of the stack. * * This can be used to keep an up-to-date view. The model also * implements [iface@Gtk.SelectionModel] and can be used to track * and modify the visible page. * * Returns: (transfer full): a `GtkSelectionModel` for the stack's children */ GtkSelectionModel * gtk_stack_get_pages (GtkStack *stack) { GtkStackPrivate *priv = gtk_stack_get_instance_private (stack); g_return_val_if_fail (GTK_IS_STACK (stack), NULL); if (priv->pages) return g_object_ref (priv->pages); priv->pages = GTK_SELECTION_MODEL (gtk_stack_pages_new (stack)); g_object_add_weak_pointer (G_OBJECT (priv->pages), (gpointer *)&priv->pages); return priv->pages; } /** * gtk_stack_page_get_visible: (attributes org.gtk.Method.get_property=visible) * @self: a `GtkStackPage` * * Returns whether @page is visible in its `GtkStack`. * * This is independent from the [property@Gtk.Widget:visible] * property of its widget. * * Returns: %TRUE if @page is visible */ gboolean gtk_stack_page_get_visible (GtkStackPage *self) { g_return_val_if_fail (GTK_IS_STACK_PAGE (self), FALSE); return self->visible; } /** * gtk_stack_page_set_visible: (attributes org.gtk.Method.set_property=visible) * @self: a `GtkStackPage` * @visible: The new property value * * Sets whether @page is visible in its `GtkStack`. */ void gtk_stack_page_set_visible (GtkStackPage *self, gboolean visible) { g_return_if_fail (GTK_IS_STACK_PAGE (self)); visible = !!visible; if (visible == self->visible) return; self->visible = visible; if (self->widget && gtk_widget_get_parent (self->widget)) update_child_visible (GTK_STACK (gtk_widget_get_parent (self->widget)), self); g_object_notify_by_pspec (G_OBJECT (self), stack_page_props[CHILD_PROP_VISIBLE]); } /** * gtk_stack_page_get_needs_attention: (attributes org.gtk.Method.get_property=needs-attention) * @self: a `GtkStackPage` * * Returns whether the page is marked as “needs attention”. * * Returns: The value of the [property@Gtk.StackPage:needs-attention] * property. */ gboolean gtk_stack_page_get_needs_attention (GtkStackPage *self) { return self->needs_attention; } /** * gtk_stack_page_set_needs_attention: (attributes org.gtk.Method.set_property=needs-attention) * @self: a `GtkStackPage` * @setting: the new value to set * * Sets whether the page is marked as “needs attention”. */ void gtk_stack_page_set_needs_attention (GtkStackPage *self, gboolean setting) { setting = !!setting; if (setting == self->needs_attention) return; self->needs_attention = setting; g_object_notify_by_pspec (G_OBJECT (self), stack_page_props[CHILD_PROP_NEEDS_ATTENTION]); } /** * gtk_stack_page_get_use_underline: (attributes org.gtk.Method.get_property=use-underline) * @self: a `GtkStackPage` * * Gets whether underlines in the page title indicate mnemonics. * * Returns: The value of the [property@Gtk.StackPage:use-underline] property */ gboolean gtk_stack_page_get_use_underline (GtkStackPage *self) { return self->use_underline; } /** * gtk_stack_page_set_use_underline: (attributes org.gtk.Method.set_property=use-underline) * @self: a `GtkStackPage` * @setting: the new value to set * * Sets whether underlines in the page title indicate mnemonics. */ void gtk_stack_page_set_use_underline (GtkStackPage *self, gboolean setting) { setting = !!setting; if (setting == self->use_underline) return; self->use_underline = setting; g_object_notify_by_pspec (G_OBJECT (self), stack_page_props[CHILD_PROP_USE_UNDERLINE]); } /** * gtk_stack_page_get_name: (attributes org.gtk.Method.get_property=name) * @self: a `GtkStackPage` * * Returns the name of the page. * * Returns: (nullable): The value of the [property@Gtk.StackPage:name] property */ const char * gtk_stack_page_get_name (GtkStackPage *self) { g_return_val_if_fail (GTK_IS_STACK_PAGE (self), NULL); return self->name; } /** * gtk_stack_page_set_name: (attributes org.gtk.Method.set_property=name) * @self: a `GtkStackPage` * @setting: (transfer none): the new value to set * * Sets the name of the page. */ void gtk_stack_page_set_name (GtkStackPage *self, const char *setting) { GtkStack *stack = NULL; GtkStackPrivate *priv = NULL; g_return_if_fail (GTK_IS_STACK_PAGE (self)); if (self->widget && gtk_widget_get_parent (self->widget) && GTK_IS_STACK (gtk_widget_get_parent (self->widget))) { guint idx; stack = GTK_STACK (gtk_widget_get_parent (self->widget)); priv = gtk_stack_get_instance_private (stack); for (idx = 0; idx < priv->children->len; idx++) { GtkStackPage *info2 = g_ptr_array_index (priv->children, idx); if (self == info2) continue; if (g_strcmp0 (info2->name, setting) == 0) { g_warning ("Duplicate child name in GtkStack: %s", setting); break; } } } if (setting == self->name) return; g_free (self->name); self->name = g_strdup (setting); g_object_notify_by_pspec (G_OBJECT (self), stack_page_props[CHILD_PROP_NAME]); if (priv && priv->visible_child == self) g_object_notify_by_pspec (G_OBJECT (stack), stack_props[PROP_VISIBLE_CHILD_NAME]); } /** * gtk_stack_page_get_title: (attributes org.gtk.Method.get_property=title) * @self: a `GtkStackPage` * * Gets the page title. * * Returns: (nullable): The value of the [property@Gtk.StackPage:title] property */ const char * gtk_stack_page_get_title (GtkStackPage *self) { g_return_val_if_fail (GTK_IS_STACK_PAGE (self), NULL); return self->title; } /** * gtk_stack_page_set_title: (attributes org.gtk.Method.set_property=title) * @self: a `GtkStackPage` * @setting: (transfer none): the new value to set * * Sets the page title. */ void gtk_stack_page_set_title (GtkStackPage *self, const char *setting) { g_return_if_fail (GTK_IS_STACK_PAGE (self)); if (setting == self->title) return; g_free (self->title); self->title = g_strdup (setting); g_object_notify_by_pspec (G_OBJECT (self), stack_page_props[CHILD_PROP_TITLE]); gtk_accessible_update_property (GTK_ACCESSIBLE (self), GTK_ACCESSIBLE_PROPERTY_LABEL, self->title, -1); } /** * gtk_stack_page_get_icon_name: (attributes org.gtk.Method.get_property=icon-name) * @self: a `GtkStackPage` * * Returns the icon name of the page. * * Returns: (nullable): The value of the [property@Gtk.StackPage:icon-name] property */ const char * gtk_stack_page_get_icon_name (GtkStackPage *self) { g_return_val_if_fail (GTK_IS_STACK_PAGE (self), NULL); return self->icon_name; } /** * gtk_stack_page_set_icon_name: (attributes org.gtk.Method.set_property=icon-name) * @self: a `GtkStackPage` * @setting: (transfer none): the new value to set * * Sets the icon name of the page. */ void gtk_stack_page_set_icon_name (GtkStackPage *self, const char *setting) { g_return_if_fail (GTK_IS_STACK_PAGE (self)); if (setting == self->icon_name) return; g_free (self->icon_name); self->icon_name = g_strdup (setting); g_object_notify_by_pspec (G_OBJECT (self), stack_page_props[CHILD_PROP_ICON_NAME]); }