gtkautoscrolledwindow.c

linux手机下的电话本源码（是contact的上层）

/*  addressbook - Address book
 *gtkautoscrolledwindow.c - 
 *
 *Authors: YE Nan <[e-mail]>
 *        ZHAO Liangjing <[e-mail]> 
 *
 *This software and associated documentation files (the "Software") 
 *are copyright (C) 2005 LiPS Linux Phone Standards Forum [FranceTelecom] 
 *All Rights Reserved. 
 *
 *A copyright license is hereby granted for redistribution and use of 
 *the Software in source and binary forms, with or without modification, 
 *provided that the following conditions are met: 
 *- Redistributions of source code must retain the above copyright notice, 
 *this copyright license and the following disclaimer. 
 *- Redistributions in binary form must reproduce the above copyright 
 *notice, this copyright license and the following disclaimer in the 
 *documentation and/or other materials provided with the distribution. 
 *- Neither the name of LiPS  nor the names of its Members may be used 
 *to endorse or promote products derived from the Software without 
 *specific prior written permission. 
 *
 *A patent license for any Necessary Claims owned by Members of LiPS Forum 
 *to make, have made, use, import, offer to sell, lease and sell or otherwise 
 *distribute any implementation compliant with the any specification adopted 
 *by the LiPS Forumcan be obtained from the respective Members on reasonable 
 *and non-discriminatory terms and conditions and under reciprocity, as 
 *regulated in more detail in the Internal Policy of the LiPS Forum. 
 *
 *THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER, ITS MEMBERS AND CONTRIBUTORS 
 *"AS IS", AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 
 *THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE 
 *AND NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER, 
 *ITS MEMBERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
 *SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
 *PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 
 *OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
 *WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
 *ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
 *POSSIBILITY OF SUCH DAMAGE. 
 */


#include <gtk/gtk.h>

#include "gtkautoscrolledwindow.h"

static GtkFrameClass *parent_class = NULL;

static void gtk_auto_scrolled_window_class_init (GtkAutoScrolledWindowClass *
                                                 klass);
static void gtk_auto_scrolled_window_init (GtkAutoScrolledWindow *window);
static void gtk_auto_scrolled_window_finalize (GObject *object);
static void gtk_auto_scrolled_window_destroy (GtkObject *object);

GType
gtk_auto_scrolled_window_get_type (void)
{
  static GType auto_scrolled_window_type = 0;

  if (!auto_scrolled_window_type)
  {
    static const GTypeInfo auto_scrolled_window_info = {
      sizeof (GtkAutoScrolledWindowClass),
      NULL,                     /* base_init */
      NULL,                     /* base_finalize */
      (GClassInitFunc) gtk_auto_scrolled_window_class_init,
      NULL,                     /* class_finalize */
      NULL,                     /* class_data */
      sizeof (GtkAutoScrolledWindow),
      0,                        /* n_preallocs */
      (GInstanceInitFunc) gtk_auto_scrolled_window_init,
    };

    auto_scrolled_window_type = g_type_register_static (GTK_TYPE_FRAME,
                                                        "GtkAutoScrolledWindow",
                                                        &auto_scrolled_window_info,
                                                        0);
  }

  return auto_scrolled_window_type;
}

static void
gtk_auto_scrolled_window_class_init (GtkAutoScrolledWindowClass *klass)
{
  GObjectClass *object_class;
  GtkObjectClass *gtk_object_class;

  parent_class = g_type_class_peek_parent (klass);

  gtk_object_class = (GtkObjectClass *) klass;
  gtk_object_class->destroy = gtk_auto_scrolled_window_destroy;

  object_class = (GObjectClass *) klass;
  object_class->finalize = gtk_auto_scrolled_window_finalize;

  return;
}

static void
gtk_auto_scrolled_window_destroy (GtkObject *object)
{
  GTK_OBJECT_CLASS (parent_class)->destroy (object);

  return;
}

static void
gtk_auto_scrolled_window_finalize (GObject *object)
{
  G_OBJECT_CLASS (parent_class)->finalize (object);

  return;
}

static void
gtk_auto_scrolled_window_get_focus_child (GtkContainer *container,
                                          GtkWidget *widget,
                                          gpointer user_data)
{
  GtkAutoScrolledWindow *as_window = (GtkAutoScrolledWindow *) user_data;
  GtkWidget *scrolled_window = as_window->scrolledwindow;
  GtkAdjustment *hadjustment =
    gtk_scrolled_window_get_hadjustment (GTK_SCROLLED_WINDOW (scrolled_window));
  GtkAdjustment *vadjustment =
    gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (scrolled_window));

  if (widget)
  {
    GtkWidget *parent = NULL;

    parent = gtk_widget_get_parent (widget);

    if (parent)
    {
      gint x, y;

      gtk_widget_translate_coordinates (widget, GTK_WIDGET (container), 0, 0,
                                        &x, &y);

      if (vadjustment)
      {
        gdouble lower;
        gdouble upper;
        gdouble prop;

        g_object_get (vadjustment, "lower", &lower, "upper", &upper, NULL);
        prop =
          (upper - lower) / (gdouble) GTK_WIDGET (container)->allocation.height;
        gtk_adjustment_clamp_page (vadjustment, y *prop,
                                   (y + widget->allocation.height) *prop);
      }

      if (hadjustment)
      {
        gdouble lower;
        gdouble upper;
        gdouble prop;

        g_object_get (vadjustment, "lower", &lower, "upper", &upper, NULL);
        prop =
          (upper - lower) / (gdouble) GTK_WIDGET (container)->allocation.width;

        gtk_adjustment_clamp_page (hadjustment, y *prop,
                                   (y + widget->allocation.width) *prop);
      }
    }
  }

  return;
}

static void
gtk_auto_scrolled_window_init (GtkAutoScrolledWindow *as_window)
{
  as_window->scrolledwindow = gtk_scrolled_window_new (NULL, NULL);
  gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW
                                  (as_window->scrolledwindow),
                                  GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
  gtk_container_add (GTK_CONTAINER (as_window), as_window->scrolledwindow);
  gtk_widget_show (as_window->scrolledwindow);

  as_window->viewport = NULL;
  as_window->child = NULL;

  return;
}

GtkWidget *
gtk_auto_scrolled_window_new (void)
{
  return gtk_widget_new (GTK_TYPE_AUTO_SCROLLED_WINDOW, NULL);
}

void
gtk_auto_scrolled_window_add_with_viewport (GtkAutoScrolledWindow *as_window,
                                            GtkWidget *widget)
{
  g_assert (GTK_IS_CONTAINER (widget));

  if (as_window->viewport == NULL)
  {
    as_window->viewport = gtk_viewport_new (NULL, NULL);
    gtk_container_add (GTK_CONTAINER (as_window->scrolledwindow),
                       as_window->viewport);
  }

  gtk_container_add (GTK_CONTAINER (as_window->viewport), widget);

//      gtk_scrolled_window_add_with_viewport(GTK_SCROLLED_WINDOW(as_window->scrolledwindow), widget);

  gtk_container_set_focus_hadjustment (GTK_CONTAINER (widget),
                                       gtk_scrolled_window_get_hadjustment
                                       (GTK_SCROLLED_WINDOW
                                        (as_window->scrolledwindow)));
  gtk_container_set_focus_vadjustment (GTK_CONTAINER (widget),
                                       gtk_scrolled_window_get_vadjustment
                                       (GTK_SCROLLED_WINDOW
                                        (as_window->scrolledwindow)));

#if 1
  g_signal_connect (GTK_OBJECT (widget),
                    "set-focus-child",
                    GTK_SIGNAL_FUNC (gtk_auto_scrolled_window_get_focus_child),
                    as_window);
#endif

//      as_window->child = gtk_widget_ref(widget);

  return;
}

void
gtk_auto_scrolled_window_add (GtkAutoScrolledWindow *as_window,
                              GtkWidget *widget)
{
  g_assert (GTK_IS_CONTAINER (widget));

  gtk_container_add (GTK_CONTAINER (as_window->scrolledwindow), widget);

  gtk_container_set_focus_hadjustment (GTK_CONTAINER (widget),
                                       gtk_scrolled_window_get_hadjustment
                                       (GTK_SCROLLED_WINDOW
                                        (as_window->scrolledwindow)));
  gtk_container_set_focus_vadjustment (GTK_CONTAINER (widget),
                                       gtk_scrolled_window_get_vadjustment
                                       (GTK_SCROLLED_WINDOW
                                        (as_window->scrolledwindow)));

#if 1
  g_signal_connect (GTK_OBJECT (widget),
                    "set-focus-child",
                    GTK_SIGNAL_FUNC (gtk_auto_scrolled_window_get_focus_child),
                    as_window);
#endif

  if (as_window->viewport)
  {
    gtk_widget_destroy (as_window->viewport);
  }
//      as_window->child = gtk_widget_ref(widget);

  return;
}

GtkWidget *
gtk_auto_scrolled_window_get_viewport (GtkAutoScrolledWindow *as_window)
{
  return as_window->viewport;
}

/* 
vi:ts=2:nowrap:ai:expandtab
*/