gtklistitem.c

gtk是linux一款强大的夸平台的图形化开发工具

/* 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 Library 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library 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 1997-1999.  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 "gtkbindings.h"
#include "gtklabel.h"
#include "gtklistitem.h"
#include "gtklist.h"
#include "gtksignal.h"
#include <gdk/gdkkeysyms.h>


enum
{
  TOGGLE_FOCUS_ROW,
  SELECT_ALL,
  UNSELECT_ALL,
  UNDO_SELECTION,
  START_SELECTION,
  END_SELECTION,
  TOGGLE_ADD_MODE,
  EXTEND_SELECTION,
  SCROLL_VERTICAL,
  SCROLL_HORIZONTAL,
  LAST_SIGNAL
};

static void gtk_list_item_class_init        (GtkListItemClass *klass);
static void gtk_list_item_init              (GtkListItem      *list_item);
static void gtk_list_item_realize           (GtkWidget        *widget);
static void gtk_list_item_size_request      (GtkWidget        *widget,
					     GtkRequisition   *requisition);
static void gtk_list_item_size_allocate     (GtkWidget        *widget,
					     GtkAllocation    *allocation);
static void gtk_list_item_style_set         (GtkWidget        *widget,
					     GtkStyle         *previous_style);
static void gtk_list_item_draw              (GtkWidget        *widget,
					     GdkRectangle     *area);
static void gtk_list_item_draw_focus        (GtkWidget        *widget);
static gint gtk_list_item_button_press      (GtkWidget        *widget,
					     GdkEventButton   *event);
static gint gtk_list_item_expose            (GtkWidget        *widget,
					     GdkEventExpose   *event);
static gint gtk_list_item_focus_in          (GtkWidget        *widget,
					     GdkEventFocus    *event);
static gint gtk_list_item_focus_out         (GtkWidget        *widget,
					     GdkEventFocus    *event);
static void gtk_real_list_item_select       (GtkItem          *item);
static void gtk_real_list_item_deselect     (GtkItem          *item);
static void gtk_real_list_item_toggle       (GtkItem          *item);


static GtkItemClass *parent_class = NULL;
static guint list_item_signals[LAST_SIGNAL] = {0};


GtkType
gtk_list_item_get_type (void)
{
  static GtkType list_item_type = 0;

  if (!list_item_type)
    {
      static const GtkTypeInfo list_item_info =
      {
	"GtkListItem",
	sizeof (GtkListItem),
	sizeof (GtkListItemClass),
	(GtkClassInitFunc) gtk_list_item_class_init,
	(GtkObjectInitFunc) gtk_list_item_init,
	/* reserved_1 */ NULL,
        /* reserved_2 */ NULL,
        (GtkClassInitFunc) NULL,
      };

      list_item_type = gtk_type_unique (gtk_item_get_type (), &list_item_info);
    }

  return list_item_type;
}

static void
gtk_list_item_class_init (GtkListItemClass *class)
{
  GtkObjectClass *object_class;
  GtkWidgetClass *widget_class;
  GtkItemClass *item_class;
  GtkBindingSet *binding_set;

  object_class = (GtkObjectClass*) class;
  widget_class = (GtkWidgetClass*) class;
  item_class = (GtkItemClass*) class;

  parent_class = gtk_type_class (gtk_item_get_type ());

  list_item_signals[TOGGLE_FOCUS_ROW] =
    gtk_signal_new ("toggle_focus_row",
                    GTK_RUN_LAST | GTK_RUN_ACTION,
                    object_class->type,
                    GTK_SIGNAL_OFFSET (GtkListItemClass, toggle_focus_row),
                    gtk_marshal_NONE__NONE,
                    GTK_TYPE_NONE, 0);
  list_item_signals[SELECT_ALL] =
    gtk_signal_new ("select_all",
                    GTK_RUN_LAST | GTK_RUN_ACTION,
                    object_class->type,
                    GTK_SIGNAL_OFFSET (GtkListItemClass, select_all),
                    gtk_marshal_NONE__NONE,
                    GTK_TYPE_NONE, 0);
  list_item_signals[UNSELECT_ALL] =
    gtk_signal_new ("unselect_all",
                    GTK_RUN_LAST | GTK_RUN_ACTION,
                    object_class->type,
                    GTK_SIGNAL_OFFSET (GtkListItemClass, unselect_all),
                    gtk_marshal_NONE__NONE,
                    GTK_TYPE_NONE, 0);
  list_item_signals[UNDO_SELECTION] =
    gtk_signal_new ("undo_selection",
		    GTK_RUN_LAST | GTK_RUN_ACTION,
		    object_class->type,
		    GTK_SIGNAL_OFFSET (GtkListItemClass, undo_selection),
		    gtk_marshal_NONE__NONE,
		    GTK_TYPE_NONE, 0);
  list_item_signals[START_SELECTION] =
    gtk_signal_new ("start_selection",
		    GTK_RUN_LAST | GTK_RUN_ACTION,
		    object_class->type,
		    GTK_SIGNAL_OFFSET (GtkListItemClass, start_selection),
		    gtk_marshal_NONE__NONE,
		    GTK_TYPE_NONE, 0);
  list_item_signals[END_SELECTION] =
    gtk_signal_new ("end_selection",
		    GTK_RUN_LAST | GTK_RUN_ACTION,
		    object_class->type,
		    GTK_SIGNAL_OFFSET (GtkListItemClass, end_selection),
		    gtk_marshal_NONE__NONE,
		    GTK_TYPE_NONE, 0);
  list_item_signals[TOGGLE_ADD_MODE] =
    gtk_signal_new ("toggle_add_mode",
		    GTK_RUN_LAST | GTK_RUN_ACTION,
		    object_class->type,
		    GTK_SIGNAL_OFFSET (GtkListItemClass, toggle_add_mode),
		    gtk_marshal_NONE__NONE,
		    GTK_TYPE_NONE, 0);
  list_item_signals[EXTEND_SELECTION] =
    gtk_signal_new ("extend_selection",
                    GTK_RUN_LAST | GTK_RUN_ACTION,
                    object_class->type,
                    GTK_SIGNAL_OFFSET (GtkListItemClass, extend_selection),
                    gtk_marshal_NONE__ENUM_FLOAT_BOOL,
                    GTK_TYPE_NONE, 3,
		    GTK_TYPE_ENUM, GTK_TYPE_FLOAT, GTK_TYPE_BOOL);
  list_item_signals[SCROLL_VERTICAL] =
    gtk_signal_new ("scroll_vertical",
                    GTK_RUN_LAST | GTK_RUN_ACTION,
                    object_class->type,
                    GTK_SIGNAL_OFFSET (GtkListItemClass, scroll_vertical),
                    gtk_marshal_NONE__ENUM_FLOAT,
                    GTK_TYPE_NONE, 2, GTK_TYPE_ENUM, GTK_TYPE_FLOAT);
  list_item_signals[SCROLL_HORIZONTAL] =
    gtk_signal_new ("scroll_horizontal",
                    GTK_RUN_LAST | GTK_RUN_ACTION,
                    object_class->type,
                    GTK_SIGNAL_OFFSET (GtkListItemClass, scroll_horizontal),
                    gtk_marshal_NONE__ENUM_FLOAT,
                    GTK_TYPE_NONE, 2, GTK_TYPE_ENUM, GTK_TYPE_FLOAT);

  gtk_object_class_add_signals (object_class, list_item_signals, LAST_SIGNAL);

  widget_class->realize = gtk_list_item_realize;
  widget_class->size_request = gtk_list_item_size_request;
  widget_class->size_allocate = gtk_list_item_size_allocate;
  widget_class->style_set = gtk_list_item_style_set;
  widget_class->draw = gtk_list_item_draw;
  widget_class->draw_focus = gtk_list_item_draw_focus;
  widget_class->button_press_event = gtk_list_item_button_press;
  widget_class->expose_event = gtk_list_item_expose;
  widget_class->focus_in_event = gtk_list_item_focus_in;
  widget_class->focus_out_event = gtk_list_item_focus_out;

  item_class->select = gtk_real_list_item_select;
  item_class->deselect = gtk_real_list_item_deselect;
  item_class->toggle = gtk_real_list_item_toggle;

  class->toggle_focus_row = NULL;
  class->select_all = NULL;
  class->unselect_all = NULL;
  class->undo_selection = NULL;
  class->start_selection = NULL;
  class->end_selection = NULL;
  class->extend_selection = NULL;
  class->scroll_horizontal = NULL;
  class->scroll_vertical = NULL;
  class->toggle_add_mode = NULL;


  binding_set = gtk_binding_set_by_class (class);
  gtk_binding_entry_add_signal (binding_set, GDK_Up, 0,
				"scroll_vertical", 2,
				GTK_TYPE_ENUM, GTK_SCROLL_STEP_BACKWARD,
				GTK_TYPE_FLOAT, 0.0);
  gtk_binding_entry_add_signal (binding_set, GDK_Down, 0,
				"scroll_vertical", 2,
				GTK_TYPE_ENUM, GTK_SCROLL_STEP_FORWARD,
				GTK_TYPE_FLOAT, 0.0);
  gtk_binding_entry_add_signal (binding_set, GDK_Page_Up, 0,
				"scroll_vertical", 2,
				GTK_TYPE_ENUM, GTK_SCROLL_PAGE_BACKWARD,
				GTK_TYPE_FLOAT, 0.0);
  gtk_binding_entry_add_signal (binding_set, GDK_Page_Down, 0,
				"scroll_vertical", 2,
				GTK_TYPE_ENUM, GTK_SCROLL_PAGE_FORWARD,
				GTK_TYPE_FLOAT, 0.0);
  gtk_binding_entry_add_signal (binding_set, GDK_Home, GDK_CONTROL_MASK,
				"scroll_vertical", 2,
				GTK_TYPE_ENUM, GTK_SCROLL_JUMP,
				GTK_TYPE_FLOAT, 0.0);
  gtk_binding_entry_add_signal (binding_set, GDK_End, GDK_CONTROL_MASK,
				"scroll_vertical", 2,
				GTK_TYPE_ENUM, GTK_SCROLL_JUMP,
				GTK_TYPE_FLOAT, 1.0);

  gtk_binding_entry_add_signal (binding_set, GDK_Up, GDK_SHIFT_MASK,
				"extend_selection", 3,
				GTK_TYPE_ENUM, GTK_SCROLL_STEP_BACKWARD,
				GTK_TYPE_FLOAT, 0.0, GTK_TYPE_BOOL, TRUE);
  gtk_binding_entry_add_signal (binding_set, GDK_Down, GDK_SHIFT_MASK,
				"extend_selection", 3,
				GTK_TYPE_ENUM, GTK_SCROLL_STEP_FORWARD,
				GTK_TYPE_FLOAT, 0.0, GTK_TYPE_BOOL, TRUE);
  gtk_binding_entry_add_signal (binding_set, GDK_Page_Up, GDK_SHIFT_MASK,
				"extend_selection", 3,
				GTK_TYPE_ENUM, GTK_SCROLL_PAGE_BACKWARD,
				GTK_TYPE_FLOAT, 0.0, GTK_TYPE_BOOL, TRUE);
  gtk_binding_entry_add_signal (binding_set, GDK_Page_Down, GDK_SHIFT_MASK,
				"extend_selection", 3,
				GTK_TYPE_ENUM, GTK_SCROLL_PAGE_FORWARD,
				GTK_TYPE_FLOAT, 0.0, GTK_TYPE_BOOL, TRUE);
  gtk_binding_entry_add_signal (binding_set, GDK_Home,
				GDK_SHIFT_MASK | GDK_CONTROL_MASK,
				"extend_selection", 3,
				GTK_TYPE_ENUM, GTK_SCROLL_JUMP,
				GTK_TYPE_FLOAT, 0.0, GTK_TYPE_BOOL, TRUE);
  gtk_binding_entry_add_signal (binding_set, GDK_End,
				GDK_SHIFT_MASK | GDK_CONTROL_MASK,
				"extend_selection", 3,
				GTK_TYPE_ENUM, GTK_SCROLL_JUMP,
				GTK_TYPE_FLOAT, 1.0, GTK_TYPE_BOOL, TRUE);

  gtk_binding_entry_add_signal (binding_set, GDK_Left, 0,
				"scroll_horizontal", 2,
				GTK_TYPE_ENUM, GTK_SCROLL_STEP_BACKWARD,
				GTK_TYPE_FLOAT, 0.0);
  gtk_binding_entry_add_signal (binding_set, GDK_Right, 0,
				"scroll_horizontal", 2,
				GTK_TYPE_ENUM, GTK_SCROLL_STEP_FORWARD,
				GTK_TYPE_FLOAT, 0.0);
  gtk_binding_entry_add_signal (binding_set, GDK_Home, 0,
				"scroll_horizontal", 2,
				GTK_TYPE_ENUM, GTK_SCROLL_JUMP,
				GTK_TYPE_FLOAT, 0.0);
  gtk_binding_entry_add_signal (binding_set, GDK_End, 0,
				"scroll_horizontal", 2,
				GTK_TYPE_ENUM, GTK_SCROLL_JUMP,
				GTK_TYPE_FLOAT, 1.0);

  gtk_binding_entry_add_signal (binding_set, GDK_Escape, 0,
				"undo_selection", 0);
  gtk_binding_entry_add_signal (binding_set, GDK_space, 0,
				"toggle_focus_row", 0);
  gtk_binding_entry_add_signal (binding_set, GDK_space, GDK_CONTROL_MASK,
				"toggle_add_mode", 0);
  gtk_binding_entry_add_signal (binding_set, '/', GDK_CONTROL_MASK,
				"select_all", 0);
  gtk_binding_entry_add_signal (binding_set, '\\', GDK_CONTROL_MASK,
				"unselect_all", 0);
  gtk_binding_entry_add_signal (binding_set, GDK_Shift_L,
				GDK_RELEASE_MASK | GDK_SHIFT_MASK,
				"end_selection", 0);
  gtk_binding_entry_add_signal (binding_set, GDK_Shift_R,
				GDK_RELEASE_MASK | GDK_SHIFT_MASK,
				"end_selection", 0);
  gtk_binding_entry_add_signal (binding_set, GDK_Shift_R,
				GDK_RELEASE_MASK | GDK_SHIFT_MASK |
				GDK_CONTROL_MASK,
				"end_selection", 0);
}

static void
gtk_list_item_init (GtkListItem *list_item)
{
  GTK_WIDGET_SET_FLAGS (list_item, GTK_CAN_FOCUS);
}

GtkWidget*
gtk_list_item_new (void)
{
  return GTK_WIDGET (gtk_type_new (gtk_list_item_get_type ()));
}

GtkWidget*