475 lines
14 KiB
C
475 lines
14 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/*
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* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#include "config.h"
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#include "gtklabel.h"
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#include "gtkmain.h"
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#include "gtkmarshalers.h"
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#include "gtktogglebutton.h"
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#include "gtkprivate.h"
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#include "gtkintl.h"
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#include "gtkalias.h"
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#define DEFAULT_LEFT_POS 4
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#define DEFAULT_TOP_POS 4
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#define DEFAULT_SPACING 7
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enum {
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TOGGLED,
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LAST_SIGNAL
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};
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enum {
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PROP_0,
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PROP_ACTIVE,
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PROP_INCONSISTENT,
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PROP_DRAW_INDICATOR
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};
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static gint gtk_toggle_button_expose (GtkWidget *widget,
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GdkEventExpose *event);
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static gboolean gtk_toggle_button_mnemonic_activate (GtkWidget *widget,
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gboolean group_cycling);
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static void gtk_toggle_button_pressed (GtkButton *button);
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static void gtk_toggle_button_released (GtkButton *button);
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static void gtk_toggle_button_clicked (GtkButton *button);
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static void gtk_toggle_button_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec);
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static void gtk_toggle_button_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec);
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static void gtk_toggle_button_update_state (GtkButton *button);
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static guint toggle_button_signals[LAST_SIGNAL] = { 0 };
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G_DEFINE_TYPE (GtkToggleButton, gtk_toggle_button, GTK_TYPE_BUTTON)
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static void
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gtk_toggle_button_class_init (GtkToggleButtonClass *class)
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{
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GObjectClass *gobject_class;
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GtkWidgetClass *widget_class;
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GtkButtonClass *button_class;
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gobject_class = G_OBJECT_CLASS (class);
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widget_class = (GtkWidgetClass*) class;
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button_class = (GtkButtonClass*) class;
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gobject_class->set_property = gtk_toggle_button_set_property;
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gobject_class->get_property = gtk_toggle_button_get_property;
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widget_class->expose_event = gtk_toggle_button_expose;
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widget_class->mnemonic_activate = gtk_toggle_button_mnemonic_activate;
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button_class->pressed = gtk_toggle_button_pressed;
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button_class->released = gtk_toggle_button_released;
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button_class->clicked = gtk_toggle_button_clicked;
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button_class->enter = gtk_toggle_button_update_state;
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button_class->leave = gtk_toggle_button_update_state;
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class->toggled = NULL;
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g_object_class_install_property (gobject_class,
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PROP_ACTIVE,
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g_param_spec_boolean ("active",
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P_("Active"),
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P_("If the toggle button should be pressed in or not"),
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FALSE,
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GTK_PARAM_READWRITE));
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g_object_class_install_property (gobject_class,
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PROP_INCONSISTENT,
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g_param_spec_boolean ("inconsistent",
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P_("Inconsistent"),
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P_("If the toggle button is in an \"in between\" state"),
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FALSE,
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GTK_PARAM_READWRITE));
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g_object_class_install_property (gobject_class,
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PROP_DRAW_INDICATOR,
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g_param_spec_boolean ("draw-indicator",
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P_("Draw Indicator"),
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P_("If the toggle part of the button is displayed"),
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FALSE,
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GTK_PARAM_READWRITE));
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toggle_button_signals[TOGGLED] =
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g_signal_new (I_("toggled"),
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G_OBJECT_CLASS_TYPE (gobject_class),
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G_SIGNAL_RUN_FIRST,
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G_STRUCT_OFFSET (GtkToggleButtonClass, toggled),
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NULL, NULL,
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_gtk_marshal_VOID__VOID,
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G_TYPE_NONE, 0);
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}
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static void
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gtk_toggle_button_init (GtkToggleButton *toggle_button)
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{
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toggle_button->active = FALSE;
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toggle_button->draw_indicator = FALSE;
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GTK_BUTTON (toggle_button)->depress_on_activate = TRUE;
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}
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GtkWidget*
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gtk_toggle_button_new (void)
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{
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return g_object_new (GTK_TYPE_TOGGLE_BUTTON, NULL);
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}
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GtkWidget*
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gtk_toggle_button_new_with_label (const gchar *label)
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{
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return g_object_new (GTK_TYPE_TOGGLE_BUTTON, "label", label, NULL);
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}
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/**
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* gtk_toggle_button_new_with_mnemonic:
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* @label: the text of the button, with an underscore in front of the
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* mnemonic character
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* @returns: a new #GtkToggleButton
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*
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* Creates a new #GtkToggleButton containing a label. The label
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* will be created using gtk_label_new_with_mnemonic(), so underscores
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* in @label indicate the mnemonic for the button.
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**/
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GtkWidget*
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gtk_toggle_button_new_with_mnemonic (const gchar *label)
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{
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return g_object_new (GTK_TYPE_TOGGLE_BUTTON,
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"label", label,
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"use-underline", TRUE,
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NULL);
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}
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static void
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gtk_toggle_button_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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GtkToggleButton *tb;
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tb = GTK_TOGGLE_BUTTON (object);
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switch (prop_id)
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{
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case PROP_ACTIVE:
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gtk_toggle_button_set_active (tb, g_value_get_boolean (value));
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break;
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case PROP_INCONSISTENT:
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gtk_toggle_button_set_inconsistent (tb, g_value_get_boolean (value));
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break;
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case PROP_DRAW_INDICATOR:
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gtk_toggle_button_set_mode (tb, g_value_get_boolean (value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gtk_toggle_button_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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GtkToggleButton *tb;
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tb = GTK_TOGGLE_BUTTON (object);
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switch (prop_id)
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{
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case PROP_ACTIVE:
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g_value_set_boolean (value, tb->active);
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break;
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case PROP_INCONSISTENT:
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g_value_set_boolean (value, tb->inconsistent);
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break;
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case PROP_DRAW_INDICATOR:
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g_value_set_boolean (value, tb->draw_indicator);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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/**
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* gtk_toggle_button_set_mode:
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* @toggle_button: a #GtkToggleButton
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* @draw_indicator: if %TRUE, draw the button as a separate indicator
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* and label; if %FALSE, draw the button like a normal button
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*
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* Sets whether the button is displayed as a separate indicator and label.
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* You can call this function on a checkbutton or a radiobutton with
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* @draw_indicator = %FALSE to make the button look like a normal button
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*
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* This function only affects instances of classes like #GtkCheckButton
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* and #GtkRadioButton that derive from #GtkToggleButton,
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* not instances of #GtkToggleButton itself.
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*/
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void
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gtk_toggle_button_set_mode (GtkToggleButton *toggle_button,
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gboolean draw_indicator)
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{
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g_return_if_fail (GTK_IS_TOGGLE_BUTTON (toggle_button));
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draw_indicator = draw_indicator ? TRUE : FALSE;
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if (toggle_button->draw_indicator != draw_indicator)
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{
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toggle_button->draw_indicator = draw_indicator;
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GTK_BUTTON (toggle_button)->depress_on_activate = !draw_indicator;
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if (GTK_WIDGET_VISIBLE (toggle_button))
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gtk_widget_queue_resize (GTK_WIDGET (toggle_button));
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g_object_notify (G_OBJECT (toggle_button), "draw-indicator");
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}
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}
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/**
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* gtk_toggle_button_get_mode:
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* @toggle_button: a #GtkToggleButton
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*
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* Retrieves whether the button is displayed as a separate indicator
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* and label. See gtk_toggle_button_set_mode().
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*
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* Return value: %TRUE if the togglebutton is drawn as a separate indicator
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* and label.
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**/
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gboolean
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gtk_toggle_button_get_mode (GtkToggleButton *toggle_button)
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{
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g_return_val_if_fail (GTK_IS_TOGGLE_BUTTON (toggle_button), FALSE);
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return toggle_button->draw_indicator;
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}
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void
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gtk_toggle_button_set_active (GtkToggleButton *toggle_button,
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gboolean is_active)
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{
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g_return_if_fail (GTK_IS_TOGGLE_BUTTON (toggle_button));
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is_active = is_active != FALSE;
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if (toggle_button->active != is_active)
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gtk_button_clicked (GTK_BUTTON (toggle_button));
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}
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gboolean
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gtk_toggle_button_get_active (GtkToggleButton *toggle_button)
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{
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g_return_val_if_fail (GTK_IS_TOGGLE_BUTTON (toggle_button), FALSE);
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return (toggle_button->active) ? TRUE : FALSE;
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}
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void
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gtk_toggle_button_toggled (GtkToggleButton *toggle_button)
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{
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g_return_if_fail (GTK_IS_TOGGLE_BUTTON (toggle_button));
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g_signal_emit (toggle_button, toggle_button_signals[TOGGLED], 0);
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}
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/**
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* gtk_toggle_button_set_inconsistent:
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* @toggle_button: a #GtkToggleButton
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* @setting: %TRUE if state is inconsistent
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*
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* If the user has selected a range of elements (such as some text or
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* spreadsheet cells) that are affected by a toggle button, and the
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* current values in that range are inconsistent, you may want to
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* display the toggle in an "in between" state. This function turns on
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* "in between" display. Normally you would turn off the inconsistent
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* state again if the user toggles the toggle button. This has to be
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* done manually, gtk_toggle_button_set_inconsistent() only affects
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* visual appearance, it doesn't affect the semantics of the button.
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*
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**/
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void
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gtk_toggle_button_set_inconsistent (GtkToggleButton *toggle_button,
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gboolean setting)
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{
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g_return_if_fail (GTK_IS_TOGGLE_BUTTON (toggle_button));
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setting = setting != FALSE;
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if (setting != toggle_button->inconsistent)
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{
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toggle_button->inconsistent = setting;
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gtk_toggle_button_update_state (GTK_BUTTON (toggle_button));
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gtk_widget_queue_draw (GTK_WIDGET (toggle_button));
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g_object_notify (G_OBJECT (toggle_button), "inconsistent");
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}
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}
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/**
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* gtk_toggle_button_get_inconsistent:
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* @toggle_button: a #GtkToggleButton
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*
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* Gets the value set by gtk_toggle_button_set_inconsistent().
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*
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* Return value: %TRUE if the button is displayed as inconsistent, %FALSE otherwise
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**/
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gboolean
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gtk_toggle_button_get_inconsistent (GtkToggleButton *toggle_button)
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{
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g_return_val_if_fail (GTK_IS_TOGGLE_BUTTON (toggle_button), FALSE);
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return toggle_button->inconsistent;
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}
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static gint
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gtk_toggle_button_expose (GtkWidget *widget,
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GdkEventExpose *event)
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{
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if (GTK_WIDGET_DRAWABLE (widget))
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{
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GtkWidget *child = GTK_BIN (widget)->child;
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GtkButton *button = GTK_BUTTON (widget);
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GtkStateType state_type;
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GtkShadowType shadow_type;
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state_type = GTK_WIDGET_STATE (widget);
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if (GTK_TOGGLE_BUTTON (widget)->inconsistent)
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{
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if (state_type == GTK_STATE_ACTIVE)
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state_type = GTK_STATE_NORMAL;
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shadow_type = GTK_SHADOW_ETCHED_IN;
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}
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else
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shadow_type = button->depressed ? GTK_SHADOW_IN : GTK_SHADOW_OUT;
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_gtk_button_paint (button, &event->area, state_type, shadow_type,
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"togglebutton", "togglebuttondefault");
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if (child)
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gtk_container_propagate_expose (GTK_CONTAINER (widget), child, event);
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}
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return FALSE;
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}
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static gboolean
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gtk_toggle_button_mnemonic_activate (GtkWidget *widget,
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gboolean group_cycling)
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{
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/*
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* We override the standard implementation in
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* gtk_widget_real_mnemonic_activate() in order to focus the widget even
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* if there is no mnemonic conflict.
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*/
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if (GTK_WIDGET_CAN_FOCUS (widget))
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gtk_widget_grab_focus (widget);
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if (!group_cycling)
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gtk_widget_activate (widget);
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return TRUE;
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}
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static void
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gtk_toggle_button_pressed (GtkButton *button)
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{
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button->button_down = TRUE;
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gtk_toggle_button_update_state (button);
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gtk_widget_queue_draw (GTK_WIDGET (button));
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}
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static void
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gtk_toggle_button_released (GtkButton *button)
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{
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if (button->button_down)
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{
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button->button_down = FALSE;
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if (button->in_button)
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gtk_button_clicked (button);
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gtk_toggle_button_update_state (button);
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gtk_widget_queue_draw (GTK_WIDGET (button));
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}
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}
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static void
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gtk_toggle_button_clicked (GtkButton *button)
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{
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GtkToggleButton *toggle_button = GTK_TOGGLE_BUTTON (button);
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toggle_button->active = !toggle_button->active;
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gtk_toggle_button_toggled (toggle_button);
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gtk_toggle_button_update_state (button);
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g_object_notify (G_OBJECT (toggle_button), "active");
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}
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static void
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gtk_toggle_button_update_state (GtkButton *button)
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{
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GtkToggleButton *toggle_button = GTK_TOGGLE_BUTTON (button);
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gboolean depressed, touchscreen;
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GtkStateType new_state;
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g_object_get (gtk_widget_get_settings (GTK_WIDGET (button)),
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"gtk-touchscreen-mode", &touchscreen,
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NULL);
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if (toggle_button->inconsistent)
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depressed = FALSE;
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else if (button->in_button && button->button_down)
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depressed = TRUE;
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else
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depressed = toggle_button->active;
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if (!touchscreen && button->in_button && (!button->button_down || toggle_button->draw_indicator))
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new_state = GTK_STATE_PRELIGHT;
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else
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new_state = depressed ? GTK_STATE_ACTIVE : GTK_STATE_NORMAL;
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_gtk_button_set_depressed (button, depressed);
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gtk_widget_set_state (GTK_WIDGET (toggle_button), new_state);
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}
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#define __GTK_TOGGLE_BUTTON_C__
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#include "gtkaliasdef.c"
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