/* GTK - The GIMP Toolkit * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald * * This library 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 library 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 library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ /* * Modified by the GTK+ Team and others 1997-2001. See the AUTHORS * file for a list of people on the GTK+ Team. See the ChangeLog * files for a list of changes. These files are distributed with * GTK+ at ftp://ftp.gtk.org/pub/gtk/. */ #include #include #include "gtkalignment.h" #include "gtkbutton.h" #include "gtklabel.h" #include "gtkmain.h" #include "gtkmarshalers.h" #include "gtkimage.h" #include "gtkhbox.h" #include "gtkstock.h" #include "gtkiconfactory.h" #include "gtkintl.h" #define CHILD_SPACING 1 static const GtkBorder default_default_border = { 1, 1, 1, 1 }; static const GtkBorder default_default_outside_border = { 0, 0, 0, 0 }; /* Time out before giving up on getting a key release when animating * the close button. */ #define ACTIVATE_TIMEOUT 250 enum { PRESSED, RELEASED, CLICKED, ENTER, LEAVE, ACTIVATE, LAST_SIGNAL }; enum { PROP_0, PROP_LABEL, PROP_RELIEF, PROP_USE_UNDERLINE, PROP_USE_STOCK, PROP_FOCUS_ON_CLICK, PROP_XALIGN, PROP_YALIGN }; #define GTK_BUTTON_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GTK_TYPE_BUTTON, GtkButtonPrivate)) typedef struct _GtkButtonPrivate GtkButtonPrivate; struct _GtkButtonPrivate { gfloat xalign; gfloat yalign; GtkSettings *settings; guint show_image_connection; GtkWidget *image; guint align_set : 1; }; static void gtk_button_class_init (GtkButtonClass *klass); static void gtk_button_init (GtkButton *button); static void gtk_button_destroy (GtkObject *object); static void gtk_button_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec); static void gtk_button_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec); static void gtk_button_screen_changed (GtkWidget *widget, GdkScreen *previous_screen); static void gtk_button_realize (GtkWidget *widget); static void gtk_button_unrealize (GtkWidget *widget); static void gtk_button_map (GtkWidget *widget); static void gtk_button_unmap (GtkWidget *widget); static void gtk_button_size_request (GtkWidget *widget, GtkRequisition *requisition); static void gtk_button_size_allocate (GtkWidget *widget, GtkAllocation *allocation); static gint gtk_button_expose (GtkWidget *widget, GdkEventExpose *event); static gint gtk_button_button_press (GtkWidget *widget, GdkEventButton *event); static gint gtk_button_button_release (GtkWidget *widget, GdkEventButton *event); static gint gtk_button_key_release (GtkWidget *widget, GdkEventKey *event); static gint gtk_button_enter_notify (GtkWidget *widget, GdkEventCrossing *event); static gint gtk_button_leave_notify (GtkWidget *widget, GdkEventCrossing *event); static void gtk_real_button_pressed (GtkButton *button); static void gtk_real_button_released (GtkButton *button); static void gtk_real_button_activate (GtkButton *button); static void gtk_button_update_state (GtkButton *button); static void gtk_button_add (GtkContainer *container, GtkWidget *widget); static GType gtk_button_child_type (GtkContainer *container); static void gtk_button_finish_activate (GtkButton *button, gboolean do_it); static GObject* gtk_button_constructor (GType type, guint n_construct_properties, GObjectConstructParam *construct_params); static void gtk_button_construct_child (GtkButton *button); static GtkBinClass *parent_class = NULL; static guint button_signals[LAST_SIGNAL] = { 0 }; GType gtk_button_get_type (void) { static GType button_type = 0; if (!button_type) { static const GTypeInfo button_info = { sizeof (GtkButtonClass), NULL, /* base_init */ NULL, /* base_finalize */ (GClassInitFunc) gtk_button_class_init, NULL, /* class_finalize */ NULL, /* class_data */ sizeof (GtkButton), 16, /* n_preallocs */ (GInstanceInitFunc) gtk_button_init, }; button_type = g_type_register_static (GTK_TYPE_BIN, "GtkButton", &button_info, 0); } return button_type; } static void gtk_button_class_init (GtkButtonClass *klass) { GObjectClass *gobject_class; GtkObjectClass *object_class; GtkWidgetClass *widget_class; GtkContainerClass *container_class; gobject_class = G_OBJECT_CLASS (klass); object_class = (GtkObjectClass*) klass; widget_class = (GtkWidgetClass*) klass; container_class = (GtkContainerClass*) klass; parent_class = g_type_class_peek_parent (klass); gobject_class->constructor = gtk_button_constructor; gobject_class->set_property = gtk_button_set_property; gobject_class->get_property = gtk_button_get_property; object_class->destroy = gtk_button_destroy; widget_class->screen_changed = gtk_button_screen_changed; widget_class->realize = gtk_button_realize; widget_class->unrealize = gtk_button_unrealize; widget_class->map = gtk_button_map; widget_class->unmap = gtk_button_unmap; widget_class->size_request = gtk_button_size_request; widget_class->size_allocate = gtk_button_size_allocate; widget_class->expose_event = gtk_button_expose; widget_class->button_press_event = gtk_button_button_press; widget_class->button_release_event = gtk_button_button_release; widget_class->key_release_event = gtk_button_key_release; widget_class->enter_notify_event = gtk_button_enter_notify; widget_class->leave_notify_event = gtk_button_leave_notify; container_class->child_type = gtk_button_child_type; container_class->add = gtk_button_add; klass->pressed = gtk_real_button_pressed; klass->released = gtk_real_button_released; klass->clicked = NULL; klass->enter = gtk_button_update_state; klass->leave = gtk_button_update_state; klass->activate = gtk_real_button_activate; g_object_class_install_property (gobject_class, PROP_LABEL, g_param_spec_string ("label", P_("Label"), P_("Text of the label widget inside the button, if the button contains a label widget"), NULL, G_PARAM_READWRITE | G_PARAM_CONSTRUCT)); g_object_class_install_property (gobject_class, PROP_USE_UNDERLINE, g_param_spec_boolean ("use_underline", P_("Use underline"), P_("If set, an underline in the text indicates the next character should be used for the mnemonic accelerator key"), FALSE, G_PARAM_READWRITE | G_PARAM_CONSTRUCT)); g_object_class_install_property (gobject_class, PROP_USE_STOCK, g_param_spec_boolean ("use_stock", P_("Use stock"), P_("If set, the label is used to pick a stock item instead of being displayed"), FALSE, G_PARAM_READWRITE | G_PARAM_CONSTRUCT)); g_object_class_install_property (gobject_class, PROP_FOCUS_ON_CLICK, g_param_spec_boolean ("focus_on_click", P_("Focus on click"), P_("Whether the button grabs focus when it is clicked with the mouse"), TRUE, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_RELIEF, g_param_spec_enum ("relief", P_("Border relief"), P_("The border relief style"), GTK_TYPE_RELIEF_STYLE, GTK_RELIEF_NORMAL, G_PARAM_READABLE | G_PARAM_WRITABLE)); /** * GtkButton:xalign: * * If the child of the button is a #GtkMisc or #GtkAlignment, this property * can be used to control it's horizontal alignment. 0.0 is left aligned, * 1.0 is right aligned. * * Since: 2.4 */ g_object_class_install_property (gobject_class, PROP_XALIGN, g_param_spec_float("xalign", P_("Horizontal alignment for child"), P_("Horizontal position of child in available space. 0.0 is left aligned, 1.0 is right aligned"), 0.0, 1.0, 0.5, G_PARAM_READABLE | G_PARAM_WRITABLE)); /** * GtkButton:yalign: * * If the child of the button is a #GtkMisc or #GtkAlignment, this property * can be used to control it's vertical alignment. 0.0 is top aligned, * 1.0 is bottom aligned. * * Since: 2.4 */ g_object_class_install_property (gobject_class, PROP_YALIGN, g_param_spec_float("yalign", P_("Vertical alignment for child"), P_("Vertical position of child in available space. 0.0 is top aligned, 1.0 is bottom aligned"), 0.0, 1.0, 0.5, G_PARAM_READABLE | G_PARAM_WRITABLE)); button_signals[PRESSED] = g_signal_new ("pressed", G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GtkButtonClass, pressed), NULL, NULL, _gtk_marshal_VOID__VOID, G_TYPE_NONE, 0); button_signals[RELEASED] = g_signal_new ("released", G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GtkButtonClass, released), NULL, NULL, _gtk_marshal_VOID__VOID, G_TYPE_NONE, 0); button_signals[CLICKED] = g_signal_new ("clicked", G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_FIRST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (GtkButtonClass, clicked), NULL, NULL, _gtk_marshal_VOID__VOID, G_TYPE_NONE, 0); button_signals[ENTER] = g_signal_new ("enter", G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GtkButtonClass, enter), NULL, NULL, _gtk_marshal_VOID__VOID, G_TYPE_NONE, 0); button_signals[LEAVE] = g_signal_new ("leave", G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GtkButtonClass, leave), NULL, NULL, _gtk_marshal_VOID__VOID, G_TYPE_NONE, 0); /** * GtkButton::activate: * @widget: the object which received the signal. * * The "activate" signal on GtkButton is an action signal and * emitting it causes the button to animate press then release. * Applications should never connect to this signal, but use the * "clicked" signal. */ button_signals[ACTIVATE] = g_signal_new ("activate", G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_FIRST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (GtkButtonClass, activate), NULL, NULL, _gtk_marshal_VOID__VOID, G_TYPE_NONE, 0); widget_class->activate_signal = button_signals[ACTIVATE]; gtk_widget_class_install_style_property (widget_class, g_param_spec_boxed ("default_border", P_("Default Spacing"), P_("Extra space to add for CAN_DEFAULT buttons"), GTK_TYPE_BORDER, G_PARAM_READABLE)); gtk_widget_class_install_style_property (widget_class, g_param_spec_boxed ("default_outside_border", P_("Default Outside Spacing"), P_("Extra space to add for CAN_DEFAULT buttons that is always drawn outside the border"), GTK_TYPE_BORDER, G_PARAM_READABLE)); gtk_widget_class_install_style_property (widget_class, g_param_spec_int ("child_displacement_x", P_("Child X Displacement"), P_("How far in the x direction to move the child when the button is depressed"), G_MININT, G_MAXINT, 0, G_PARAM_READABLE)); gtk_widget_class_install_style_property (widget_class, g_param_spec_int ("child_displacement_y", P_("Child Y Displacement"), P_("How far in the y direction to move the child when the button is depressed"), G_MININT, G_MAXINT, 0, G_PARAM_READABLE)); gtk_settings_install_property (g_param_spec_boolean ("gtk-button-images", P_("Show button images"), P_("Whether stock icons should be shown in buttons"), TRUE, G_PARAM_READWRITE)); g_type_class_add_private (gobject_class, sizeof (GtkButtonPrivate)); } static void gtk_button_init (GtkButton *button) { GtkButtonPrivate *priv = GTK_BUTTON_GET_PRIVATE (button); GTK_WIDGET_SET_FLAGS (button, GTK_CAN_FOCUS | GTK_RECEIVES_DEFAULT); GTK_WIDGET_SET_FLAGS (button, GTK_NO_WINDOW); button->label_text = NULL; button->constructed = FALSE; button->in_button = FALSE; button->button_down = FALSE; button->relief = GTK_RELIEF_NORMAL; button->use_stock = FALSE; button->use_underline = FALSE; button->depressed = FALSE; button->depress_on_activate = TRUE; button->focus_on_click = TRUE; priv->xalign = 0.5; priv->yalign = 0.5; priv->align_set = 0; } static void gtk_button_destroy (GtkObject *object) { GtkButton *button = GTK_BUTTON (object); if (button->label_text) { g_free (button->label_text); button->label_text = NULL; } (* GTK_OBJECT_CLASS (parent_class)->destroy) (object); } static GObject* gtk_button_constructor (GType type, guint n_construct_properties, GObjectConstructParam *construct_params) { GObject *object; GtkButton *button; object = (* G_OBJECT_CLASS (parent_class)->constructor) (type, n_construct_properties, construct_params); button = GTK_BUTTON (object); button->constructed = TRUE; if (button->label_text != NULL) gtk_button_construct_child (button); return object; } static GType gtk_button_child_type (GtkContainer *container) { if (!GTK_BIN (container)->child) return GTK_TYPE_WIDGET; else return G_TYPE_NONE; } static void maybe_set_alignment (GtkButton *button, GtkWidget *widget) { GtkButtonPrivate *priv = GTK_BUTTON_GET_PRIVATE (button); if (GTK_IS_MISC (widget)) { GtkMisc *misc = GTK_MISC (widget); if (priv->align_set) gtk_misc_set_alignment (misc, priv->xalign, priv->yalign); } else if (GTK_IS_ALIGNMENT (widget)) { GtkAlignment *alignment = GTK_ALIGNMENT (widget); if (priv->align_set) gtk_alignment_set (alignment, priv->xalign, priv->yalign, alignment->xscale, alignment->yscale); } } static void gtk_button_add (GtkContainer *container, GtkWidget *widget) { maybe_set_alignment (GTK_BUTTON (container), widget); GTK_CONTAINER_CLASS (parent_class)->add (container, widget); } static void gtk_button_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { GtkButton *button = GTK_BUTTON (object); GtkButtonPrivate *priv = GTK_BUTTON_GET_PRIVATE (button); switch (prop_id) { case PROP_LABEL: gtk_button_set_label (button, g_value_get_string (value)); break; case PROP_RELIEF: gtk_button_set_relief (button, g_value_get_enum (value)); break; case PROP_USE_UNDERLINE: gtk_button_set_use_underline (button, g_value_get_boolean (value)); break; case PROP_USE_STOCK: gtk_button_set_use_stock (button, g_value_get_boolean (value)); break; case PROP_FOCUS_ON_CLICK: gtk_button_set_focus_on_click (button, g_value_get_boolean (value)); break; case PROP_XALIGN: gtk_button_set_alignment (button, g_value_get_float (value), priv->yalign); break; case PROP_YALIGN: gtk_button_set_alignment (button, priv->xalign, g_value_get_float (value)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gtk_button_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { GtkButton *button = GTK_BUTTON (object); GtkButtonPrivate *priv = GTK_BUTTON_GET_PRIVATE (button); switch (prop_id) { case PROP_LABEL: g_value_set_string (value, button->label_text); break; case PROP_RELIEF: g_value_set_enum (value, gtk_button_get_relief (button)); break; case PROP_USE_UNDERLINE: g_value_set_boolean (value, button->use_underline); break; case PROP_USE_STOCK: g_value_set_boolean (value, button->use_stock); break; case PROP_FOCUS_ON_CLICK: g_value_set_boolean (value, button->focus_on_click); break; case PROP_XALIGN: g_value_set_float (value, priv->xalign); break; case PROP_YALIGN: g_value_set_float (value, priv->yalign); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } GtkWidget* gtk_button_new (void) { return g_object_new (GTK_TYPE_BUTTON, NULL); } static gboolean show_image (GtkButton *button) { GtkSettings *settings = gtk_widget_get_settings (GTK_WIDGET (button)); gboolean show; g_object_get (settings, "gtk-button-images", &show, NULL); return show; } static void gtk_button_construct_child (GtkButton *button) { GtkButtonPrivate *priv = GTK_BUTTON_GET_PRIVATE (button); GtkStockItem item; GtkWidget *label; GtkWidget *hbox; GtkWidget *align; if (!button->constructed) return; if (button->label_text == NULL) return; if (GTK_BIN (button)->child) { gtk_container_remove (GTK_CONTAINER (button), GTK_BIN (button)->child); priv->image = NULL; } if (button->use_stock && gtk_stock_lookup (button->label_text, &item)) { label = gtk_label_new_with_mnemonic (item.label); gtk_label_set_mnemonic_widget (GTK_LABEL (label), GTK_WIDGET (button)); priv->image = gtk_image_new_from_stock (button->label_text, GTK_ICON_SIZE_BUTTON); g_object_set (priv->image, "visible", show_image (button), "no_show_all", TRUE, NULL); hbox = gtk_hbox_new (FALSE, 2); if (priv->align_set) align = gtk_alignment_new (priv->xalign, priv->yalign, 0.0, 0.0); else align = gtk_alignment_new (0.5, 0.5, 0.0, 0.0); gtk_box_pack_start (GTK_BOX (hbox), priv->image, FALSE, FALSE, 0); gtk_box_pack_end (GTK_BOX (hbox), label, FALSE, FALSE, 0); gtk_container_add (GTK_CONTAINER (button), align); gtk_container_add (GTK_CONTAINER (align), hbox); gtk_widget_show_all (align); return; } if (button->use_underline) { label = gtk_label_new_with_mnemonic (button->label_text); gtk_label_set_mnemonic_widget (GTK_LABEL (label), GTK_WIDGET (button)); } else label = gtk_label_new (button->label_text); if (priv->align_set) gtk_misc_set_alignment (GTK_MISC (label), priv->xalign, priv->yalign); gtk_widget_show (label); gtk_container_add (GTK_CONTAINER (button), label); } GtkWidget* gtk_button_new_with_label (const gchar *label) { return g_object_new (GTK_TYPE_BUTTON, "label", label, NULL); } /** * gtk_button_new_from_stock: * @stock_id: the name of the stock item * * Creates a new #GtkButton containing the image and text from a stock item. * Some stock ids have preprocessor macros like #GTK_STOCK_OK and * #GTK_STOCK_APPLY. * * If @stock_id is unknown, then it will be treated as a mnemonic * label (as for gtk_button_new_with_mnemonic()). * * Returns: a new #GtkButton **/ GtkWidget* gtk_button_new_from_stock (const gchar *stock_id) { return g_object_new (GTK_TYPE_BUTTON, "label", stock_id, "use_stock", TRUE, "use_underline", TRUE, NULL); } /** * gtk_button_new_with_mnemonic: * @label: The text of the button, with an underscore in front of the * mnemonic character * @returns: a new #GtkButton * * Creates a new #GtkButton containing a label. * If characters in @label are preceded by an underscore, they are underlined. * If you need a literal underscore character in a label, use '__' (two * underscores). The first underlined character represents a keyboard * accelerator called a mnemonic. * Pressing Alt and that key activates the button. **/ GtkWidget* gtk_button_new_with_mnemonic (const gchar *label) { return g_object_new (GTK_TYPE_BUTTON, "label", label, "use_underline", TRUE, NULL); } void gtk_button_pressed (GtkButton *button) { g_return_if_fail (GTK_IS_BUTTON (button)); g_signal_emit (button, button_signals[PRESSED], 0); } void gtk_button_released (GtkButton *button) { g_return_if_fail (GTK_IS_BUTTON (button)); g_signal_emit (button, button_signals[RELEASED], 0); } void gtk_button_clicked (GtkButton *button) { g_return_if_fail (GTK_IS_BUTTON (button)); g_signal_emit (button, button_signals[CLICKED], 0); } void gtk_button_enter (GtkButton *button) { g_return_if_fail (GTK_IS_BUTTON (button)); g_signal_emit (button, button_signals[ENTER], 0); } void gtk_button_leave (GtkButton *button) { g_return_if_fail (GTK_IS_BUTTON (button)); g_signal_emit (button, button_signals[LEAVE], 0); } void gtk_button_set_relief (GtkButton *button, GtkReliefStyle newrelief) { g_return_if_fail (GTK_IS_BUTTON (button)); if (newrelief != button->relief) { button->relief = newrelief; g_object_notify (G_OBJECT (button), "relief"); gtk_widget_queue_draw (GTK_WIDGET (button)); } } GtkReliefStyle gtk_button_get_relief (GtkButton *button) { g_return_val_if_fail (button != NULL, GTK_RELIEF_NORMAL); g_return_val_if_fail (GTK_IS_BUTTON (button), GTK_RELIEF_NORMAL); return button->relief; } static void gtk_button_realize (GtkWidget *widget) { GtkButton *button; GdkWindowAttr attributes; gint attributes_mask; gint border_width; button = GTK_BUTTON (widget); GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED); border_width = GTK_CONTAINER (widget)->border_width; attributes.window_type = GDK_WINDOW_CHILD; attributes.x = widget->allocation.x + border_width; attributes.y = widget->allocation.y + border_width; attributes.width = widget->allocation.width - border_width * 2; attributes.height = widget->allocation.height - border_width * 2; attributes.wclass = GDK_INPUT_ONLY; attributes.event_mask = gtk_widget_get_events (widget); attributes.event_mask |= (GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK | GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK); attributes_mask = GDK_WA_X | GDK_WA_Y; widget->window = gtk_widget_get_parent_window (widget); g_object_ref (widget->window); button->event_window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask); gdk_window_set_user_data (button->event_window, button); widget->style = gtk_style_attach (widget->style, widget->window); } static void gtk_button_unrealize (GtkWidget *widget) { GtkButton *button = GTK_BUTTON (widget); if (button->activate_timeout) gtk_button_finish_activate (button, FALSE); if (button->event_window) { gdk_window_set_user_data (button->event_window, NULL); gdk_window_destroy (button->event_window); button->event_window = NULL; } GTK_WIDGET_CLASS (parent_class)->unrealize (widget); } static void gtk_button_map (GtkWidget *widget) { GtkButton *button = GTK_BUTTON (widget); g_return_if_fail (GTK_IS_BUTTON (widget)); GTK_WIDGET_CLASS (parent_class)->map (widget); if (button->event_window) gdk_window_show (button->event_window); } static void gtk_button_unmap (GtkWidget *widget) { GtkButton *button = GTK_BUTTON (widget); g_return_if_fail (GTK_IS_BUTTON (widget)); if (button->event_window) gdk_window_hide (button->event_window); GTK_WIDGET_CLASS (parent_class)->unmap (widget); } static void gtk_button_get_props (GtkButton *button, GtkBorder *default_border, GtkBorder *default_outside_border, gboolean *interior_focus) { GtkWidget *widget = GTK_WIDGET (button); GtkBorder *tmp_border; if (default_border) { gtk_widget_style_get (widget, "default_border", &tmp_border, NULL); if (tmp_border) { *default_border = *tmp_border; g_free (tmp_border); } else *default_border = default_default_border; } if (default_outside_border) { gtk_widget_style_get (widget, "default_outside_border", &tmp_border, NULL); if (tmp_border) { *default_outside_border = *tmp_border; g_free (tmp_border); } else *default_outside_border = default_default_outside_border; } if (interior_focus) gtk_widget_style_get (widget, "interior_focus", interior_focus, NULL); } static void gtk_button_size_request (GtkWidget *widget, GtkRequisition *requisition) { GtkButton *button = GTK_BUTTON (widget); GtkBorder default_border; gboolean interior_focus; gint focus_width; gint focus_pad; gtk_button_get_props (button, &default_border, NULL, &interior_focus); gtk_widget_style_get (GTK_WIDGET (widget), "focus-line-width", &focus_width, "focus-padding", &focus_pad, NULL); requisition->width = (GTK_CONTAINER (widget)->border_width + CHILD_SPACING + GTK_WIDGET (widget)->style->xthickness) * 2; requisition->height = (GTK_CONTAINER (widget)->border_width + CHILD_SPACING + GTK_WIDGET (widget)->style->ythickness) * 2; if (GTK_WIDGET_CAN_DEFAULT (widget)) { requisition->width += default_border.left + default_border.right; requisition->height += default_border.top + default_border.bottom; } if (GTK_BIN (button)->child && GTK_WIDGET_VISIBLE (GTK_BIN (button)->child)) { GtkRequisition child_requisition; gtk_widget_size_request (GTK_BIN (button)->child, &child_requisition); requisition->width += child_requisition.width; requisition->height += child_requisition.height; } requisition->width += 2 * (focus_width + focus_pad); requisition->height += 2 * (focus_width + focus_pad); } static void gtk_button_size_allocate (GtkWidget *widget, GtkAllocation *allocation) { GtkButton *button = GTK_BUTTON (widget); GtkAllocation child_allocation; gint border_width = GTK_CONTAINER (widget)->border_width; gint xthickness = GTK_WIDGET (widget)->style->xthickness; gint ythickness = GTK_WIDGET (widget)->style->ythickness; GtkBorder default_border; gint focus_width; gint focus_pad; gtk_button_get_props (button, &default_border, NULL, NULL); gtk_widget_style_get (GTK_WIDGET (widget), "focus-line-width", &focus_width, "focus-padding", &focus_pad, NULL); widget->allocation = *allocation; if (GTK_WIDGET_REALIZED (widget)) gdk_window_move_resize (button->event_window, widget->allocation.x + border_width, widget->allocation.y + border_width, widget->allocation.width - border_width * 2, widget->allocation.height - border_width * 2); if (GTK_BIN (button)->child && GTK_WIDGET_VISIBLE (GTK_BIN (button)->child)) { child_allocation.x = widget->allocation.x + border_width + CHILD_SPACING + xthickness; child_allocation.y = widget->allocation.y + border_width + CHILD_SPACING + ythickness; child_allocation.width = MAX (1, widget->allocation.width - (CHILD_SPACING + xthickness) * 2 - border_width * 2); child_allocation.height = MAX (1, widget->allocation.height - (CHILD_SPACING + ythickness) * 2 - border_width * 2); if (GTK_WIDGET_CAN_DEFAULT (button)) { child_allocation.x += default_border.left; child_allocation.y += default_border.top; child_allocation.width = MAX (1, child_allocation.width - default_border.left - default_border.right); child_allocation.height = MAX (1, child_allocation.height - default_border.top - default_border.bottom); } child_allocation.x += focus_width + focus_pad; child_allocation.y += focus_width + focus_pad; child_allocation.width = MAX (1, child_allocation.width - (focus_width + focus_pad) * 2); child_allocation.height = MAX (1, child_allocation.height - (focus_width + focus_pad) * 2); if (button->depressed) { gint child_displacement_x; gint child_displacement_y; gtk_widget_style_get (widget, "child_displacement_x", &child_displacement_x, "child_displacement_y", &child_displacement_y, NULL); child_allocation.x += child_displacement_x; child_allocation.y += child_displacement_y; } gtk_widget_size_allocate (GTK_BIN (button)->child, &child_allocation); } } void _gtk_button_paint (GtkButton *button, GdkRectangle *area, GtkStateType state_type, GtkShadowType shadow_type, const gchar *main_detail, const gchar *default_detail) { GtkWidget *widget; gint width, height; gint x, y; gint border_width; GtkBorder default_border; GtkBorder default_outside_border; gboolean interior_focus; gint focus_width; gint focus_pad; if (GTK_WIDGET_DRAWABLE (button)) { widget = GTK_WIDGET (button); border_width = GTK_CONTAINER (widget)->border_width; gtk_button_get_props (button, &default_border, &default_outside_border, &interior_focus); gtk_widget_style_get (GTK_WIDGET (widget), "focus-line-width", &focus_width, "focus-padding", &focus_pad, NULL); x = widget->allocation.x + border_width; y = widget->allocation.y + border_width; width = widget->allocation.width - border_width * 2; height = widget->allocation.height - border_width * 2; if (GTK_WIDGET_HAS_DEFAULT (widget) && GTK_BUTTON (widget)->relief == GTK_RELIEF_NORMAL) { gtk_paint_box (widget->style, widget->window, GTK_STATE_NORMAL, GTK_SHADOW_IN, area, widget, "buttondefault", x, y, width, height); x += default_border.left; y += default_border.top; width -= default_border.left + default_border.right; height -= default_border.top + default_border.bottom; } else if (GTK_WIDGET_CAN_DEFAULT (widget)) { x += default_outside_border.left; y += default_outside_border.top; width -= default_outside_border.left + default_outside_border.right; height -= default_outside_border.top + default_outside_border.bottom; } if (!interior_focus && GTK_WIDGET_HAS_FOCUS (widget)) { x += focus_width + focus_pad; y += focus_width + focus_pad; width -= 2 * (focus_width + focus_pad); height -= 2 * (focus_width + focus_pad); } if (button->relief != GTK_RELIEF_NONE || button->depressed || GTK_WIDGET_STATE(widget) == GTK_STATE_PRELIGHT) gtk_paint_box (widget->style, widget->window, state_type, shadow_type, area, widget, "button", x, y, width, height); if (GTK_WIDGET_HAS_FOCUS (widget)) { if (interior_focus) { x += widget->style->xthickness + focus_pad; y += widget->style->ythickness + focus_pad; width -= 2 * (widget->style->xthickness + focus_pad); height -= 2 * (widget->style->ythickness + focus_pad); } else { x -= focus_width + focus_pad; y -= focus_width + focus_pad; width += 2 * (focus_width + focus_pad); height += 2 * (focus_width + focus_pad); } gtk_paint_focus (widget->style, widget->window, GTK_WIDGET_STATE (widget), area, widget, "button", x, y, width, height); } } } static gboolean gtk_button_expose (GtkWidget *widget, GdkEventExpose *event) { if (GTK_WIDGET_DRAWABLE (widget)) { GtkButton *button = GTK_BUTTON (widget); _gtk_button_paint (button, &event->area, GTK_WIDGET_STATE (widget), button->depressed ? GTK_SHADOW_IN : GTK_SHADOW_OUT, "button", "buttondefault"); (* GTK_WIDGET_CLASS (parent_class)->expose_event) (widget, event); } return FALSE; } static gboolean gtk_button_button_press (GtkWidget *widget, GdkEventButton *event) { GtkButton *button; if (event->type == GDK_BUTTON_PRESS) { button = GTK_BUTTON (widget); if (button->focus_on_click && !GTK_WIDGET_HAS_FOCUS (widget)) gtk_widget_grab_focus (widget); if (event->button == 1) gtk_button_pressed (button); } return TRUE; } static gboolean gtk_button_button_release (GtkWidget *widget, GdkEventButton *event) { GtkButton *button; if (event->button == 1) { button = GTK_BUTTON (widget); gtk_button_released (button); } return TRUE; } static gboolean gtk_button_key_release (GtkWidget *widget, GdkEventKey *event) { GtkButton *button = GTK_BUTTON (widget); if (button->activate_timeout) { gtk_button_finish_activate (button, TRUE); return TRUE; } else if (GTK_WIDGET_CLASS (parent_class)->key_release_event) return GTK_WIDGET_CLASS (parent_class)->key_release_event (widget, event); else return FALSE; } static gboolean gtk_button_enter_notify (GtkWidget *widget, GdkEventCrossing *event) { GtkButton *button; GtkWidget *event_widget; button = GTK_BUTTON (widget); event_widget = gtk_get_event_widget ((GdkEvent*) event); if ((event_widget == widget) && (event->detail != GDK_NOTIFY_INFERIOR)) { button->in_button = TRUE; gtk_button_enter (button); } return FALSE; } static gboolean gtk_button_leave_notify (GtkWidget *widget, GdkEventCrossing *event) { GtkButton *button; GtkWidget *event_widget; button = GTK_BUTTON (widget); event_widget = gtk_get_event_widget ((GdkEvent*) event); if ((event_widget == widget) && (event->detail != GDK_NOTIFY_INFERIOR)) { button->in_button = FALSE; gtk_button_leave (button); } return FALSE; } static void gtk_real_button_pressed (GtkButton *button) { if (button->activate_timeout) return; button->button_down = TRUE; gtk_button_update_state (button); } static void gtk_real_button_released (GtkButton *button) { if (button->button_down) { button->button_down = FALSE; if (button->activate_timeout) return; if (button->in_button) gtk_button_clicked (button); gtk_button_update_state (button); } } static gboolean button_activate_timeout (gpointer data) { GDK_THREADS_ENTER (); gtk_button_finish_activate (data, TRUE); GDK_THREADS_LEAVE (); return FALSE; } static void gtk_real_button_activate (GtkButton *button) { GtkWidget *widget = GTK_WIDGET (button); if (GTK_WIDGET_REALIZED (button) && !button->activate_timeout) { if (gdk_keyboard_grab (button->event_window, TRUE, gtk_get_current_event_time ()) == 0) { gtk_grab_add (widget); button->activate_timeout = g_timeout_add (ACTIVATE_TIMEOUT, button_activate_timeout, button); button->button_down = TRUE; gtk_button_update_state (button); gtk_widget_queue_draw (GTK_WIDGET (button)); } } } static void gtk_button_finish_activate (GtkButton *button, gboolean do_it) { GtkWidget *widget = GTK_WIDGET (button); g_source_remove (button->activate_timeout); button->activate_timeout = 0; gdk_display_keyboard_ungrab (gtk_widget_get_display (widget), gtk_get_current_event_time ()); gtk_grab_remove (widget); button->button_down = FALSE; gtk_button_update_state (button); gtk_widget_queue_draw (GTK_WIDGET (button)); if (do_it) gtk_button_clicked (button); } /** * gtk_button_set_label: * @button: a #GtkButton * @label: a string * * Sets the text of the label of the button to @str. This text is * also used to select the stock item if gtk_button_set_use_stock() * is used. * * This will also clear any previously set labels. **/ void gtk_button_set_label (GtkButton *button, const gchar *label) { gchar *new_label; g_return_if_fail (GTK_IS_BUTTON (button)); new_label = g_strdup (label); g_free (button->label_text); button->label_text = new_label; gtk_button_construct_child (button); g_object_notify (G_OBJECT (button), "label"); } /** * gtk_button_get_label: * @button: a #GtkButton * * Fetches the text from the label of the button, as set by * gtk_button_set_label(). If the label text has not * been set the return value will be %NULL. This will be the * case if you create an empty button with gtk_button_new() to * use as a container. * * Return value: The text of the label widget. This string is owned * by the widget and must not be modified or freed. **/ G_CONST_RETURN gchar * gtk_button_get_label (GtkButton *button) { g_return_val_if_fail (GTK_IS_BUTTON (button), NULL); return button->label_text; } /** * gtk_button_set_use_underline: * @button: a #GtkButton * @use_underline: %TRUE if underlines in the text indicate mnemonics * * If true, an underline in the text of the button label indicates * the next character should be used for the mnemonic accelerator key. */ void gtk_button_set_use_underline (GtkButton *button, gboolean use_underline) { g_return_if_fail (GTK_IS_BUTTON (button)); use_underline = use_underline != FALSE; if (use_underline != button->use_underline) { button->use_underline = use_underline; gtk_button_construct_child (button); g_object_notify (G_OBJECT (button), "use_underline"); } } /** * gtk_button_get_use_underline: * @button: a #GtkButton * * Returns whether an embedded underline in the button label indicates a * mnemonic. See gtk_button_set_use_underline (). * * Return value: %TRUE if an embedded underline in the button label * indicates the mnemonic accelerator keys. **/ gboolean gtk_button_get_use_underline (GtkButton *button) { g_return_val_if_fail (GTK_IS_BUTTON (button), FALSE); return button->use_underline; } /** * gtk_button_set_use_stock: * @button: a #GtkButton * @use_stock: %TRUE if the button should use a stock item * * If true, the label set on the button is used as a * stock id to select the stock item for the button. */ void gtk_button_set_use_stock (GtkButton *button, gboolean use_stock) { g_return_if_fail (GTK_IS_BUTTON (button)); use_stock = use_stock != FALSE; if (use_stock != button->use_stock) { button->use_stock = use_stock; gtk_button_construct_child (button); g_object_notify (G_OBJECT (button), "use_stock"); } } /** * gtk_button_get_use_stock: * @button: a #GtkButton * * Returns whether the button label is a stock item. * * Return value: %TRUE if the button label is used to * select a stock item instead of being * used directly as the label text. */ gboolean gtk_button_get_use_stock (GtkButton *button) { g_return_val_if_fail (GTK_IS_BUTTON (button), FALSE); return button->use_stock; } /** * gtk_button_set_focus_on_click: * @button: a #GtkButton * @focus_on_click: whether the mouse grabs focus when clicked with the mouse * * Sets whether the button will grab focus when it is clicked with the mouse. * Making mouse clicks not grab focus is useful in places like toolbars where * you don't want the keyboard focus removed from the main area of the * application. * * Since: 2.4 **/ void gtk_button_set_focus_on_click (GtkButton *button, gboolean focus_on_click) { g_return_if_fail (GTK_IS_BUTTON (button)); focus_on_click = focus_on_click != FALSE; if (button->focus_on_click != focus_on_click) { button->focus_on_click = focus_on_click; g_object_notify (G_OBJECT (button), "focus_on_click"); } } /** * gtk_button_get_focus_on_click: * @button: a #GtkButton * * Returns whether the button grabs focus when it is clicked with the mouse. * See gtk_button_set_focus_on_click(). * * Return value: %TRUE if the button grabs focus when it is clicked with * the mouse. * * Since: 2.4 **/ gboolean gtk_button_get_focus_on_click (GtkButton *button) { g_return_val_if_fail (GTK_IS_BUTTON (button), FALSE); return button->focus_on_click; } /** * gtk_button_set_alignment: * @button: a #GtkButton * @xalign: the horizontal position of the child, 0.0 is left aligned, * 1.0 is right aligned * @yalign: the vertical position of the child, 0.0 is top aligned, * 1.0 is bottom aligned * * Sets the alignment of the child. This property has no effect unless * the child is a #GtkMisc or a #GtkAligment. * * Since: 2.4 */ void gtk_button_set_alignment (GtkButton *button, gfloat xalign, gfloat yalign) { GtkButtonPrivate *priv; g_return_if_fail (GTK_IS_BUTTON (button)); priv = GTK_BUTTON_GET_PRIVATE (button); priv->xalign = xalign; priv->yalign = yalign; priv->align_set = 1; maybe_set_alignment (button, GTK_BIN (button)->child); g_object_freeze_notify (G_OBJECT (button)); g_object_notify (G_OBJECT (button), "xalign"); g_object_notify (G_OBJECT (button), "yalign"); g_object_thaw_notify (G_OBJECT (button)); } /** * gtk_button_get_alignment: * @button: a #GtkButton * @xalign: return location for horizontal alignment * @yalign: return location for vertical alignment * * Gets the alignment of the child in the button. * * Since: 2.4 */ void gtk_button_get_alignment (GtkButton *button, gfloat *xalign, gfloat *yalign) { GtkButtonPrivate *priv; g_return_if_fail (GTK_IS_BUTTON (button)); priv = GTK_BUTTON_GET_PRIVATE (button); if (xalign) *xalign = priv->xalign; if (yalign) *yalign = priv->yalign; } /** * _gtk_button_set_depressed: * @button: a #GtkButton * @depressed: %TRUE if the button should be drawn with a recessed shadow. * * Sets whether the button is currently drawn as down or not. This is * purely a visual setting, and is meant only for use by derived widgets * such as #GtkToggleButton. **/ void _gtk_button_set_depressed (GtkButton *button, gboolean depressed) { GtkWidget *widget = GTK_WIDGET (button); depressed = depressed != FALSE; if (depressed != button->depressed) { button->depressed = depressed; gtk_widget_queue_resize (widget); } } static void gtk_button_update_state (GtkButton *button) { gboolean depressed; GtkStateType new_state; if (button->activate_timeout) depressed = button->depress_on_activate; else depressed = button->in_button && button->button_down; if (button->in_button && (!button->button_down || !depressed)) new_state = GTK_STATE_PRELIGHT; else new_state = depressed ? GTK_STATE_ACTIVE : GTK_STATE_NORMAL; _gtk_button_set_depressed (button, depressed); gtk_widget_set_state (GTK_WIDGET (button), new_state); } static void show_image_change_notify (GtkButton *button) { GtkButtonPrivate *priv = GTK_BUTTON_GET_PRIVATE (button); if (priv->image) g_object_set (priv->image, "visible", show_image (button), NULL); } static void gtk_button_screen_changed (GtkWidget *widget, GdkScreen *previous_screen) { GtkButtonPrivate *priv = GTK_BUTTON_GET_PRIVATE (widget); GtkSettings *settings; if (gtk_widget_has_screen (widget)) settings = gtk_widget_get_settings (widget); else settings = NULL; if (settings == priv->settings) return; if (priv->settings) { g_signal_handler_disconnect (priv->settings, priv->show_image_connection); g_object_unref (priv->settings); } if (settings) { priv->show_image_connection = g_signal_connect_swapped (settings, "notify::gtk-button-images", G_CALLBACK (show_image_change_notify), widget); g_object_ref (settings); priv->settings = settings; } else priv->settings = NULL; show_image_change_notify (GTK_BUTTON (widget)); }