root/GtkRadiant/branches/ZeroRadiant.ab/radiant/dialog.cpp

/*
Copyright (C) 1999-2007 id Software, Inc. and contributors.
For a list of contributors, see the accompanying CONTRIBUTORS file.

This file is part of GtkRadiant.

GtkRadiant is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

GtkRadiant 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 General Public License for more details.

You should have received a copy of the GNU General Public License
along with GtkRadiant; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/

//
// Base dialog class, provides a way to run modal dialogs and
// set/get the widget values in member variables.
//
// Leonardo Zide (leo@lokigames.com)
//

#include "stdafx.h"
#include <gtk/gtk.h>
#include <stdlib.h>
#include <stdio.h>

typedef struct
{
  GtkObject     *object;
  void          *buffer;
  DLG_DATA_TYPE type;
} DLG_DATA;

// =============================================================================
// Dialog class

Dialog::Dialog ()
{
  m_pDataList = (GSList*)NULL;
  m_nReturn = IDCANCEL;
  m_bNeedBuild = true;
  m_nLoop = 0;
}

Dialog::~Dialog ()
{
  while (m_pDataList)
  {
    free (m_pDataList->data);
    m_pDataList = g_slist_remove (m_pDataList, m_pDataList->data);
  }

  if (m_pWidget != NULL)
    gtk_widget_destroy (m_pWidget);
}

// i suspect that this is redundant - gtk manages to remember the data stored in its widgets across a hide/show
void Dialog::ShowDlg ()
{
  Create ();
  UpdateData (FALSE);
  gtk_widget_show (m_pWidget);
}

void Dialog::HideDlg ()
{
  UpdateData (TRUE);
  gtk_widget_hide (m_pWidget);
}

static gint delete_event_callback(GtkWidget *widget, GdkEvent* event, gpointer data)
{
  reinterpret_cast<Dialog*>(data)->HideDlg();
  reinterpret_cast<Dialog*>(data)->EndModal(IDCANCEL);
  return TRUE;
}

void Dialog::Create ()
{
  if (m_bNeedBuild)
  {
    m_pWidget = gtk_window_new (GTK_WINDOW_TOPLEVEL);
    gtk_signal_connect (GTK_OBJECT (m_pWidget), "delete_event",
                        GTK_SIGNAL_FUNC (delete_event_callback), this);
    gtk_signal_connect (GTK_OBJECT (m_pWidget), "destroy",
                        GTK_SIGNAL_FUNC (gtk_widget_destroy), NULL);
    g_object_set_data (G_OBJECT (m_pWidget), "loop", &m_nLoop);
    g_object_set_data (G_OBJECT (m_pWidget), "ret", &m_nReturn);

    BuildDialog ();
    m_bNeedBuild = false;
  }
}

void Dialog::Destroy ()
{
  if (m_pWidget != NULL)
  {
    gtk_widget_destroy (m_pWidget);
    m_pWidget = NULL;
  }
}

void Dialog::AddDialogData (GtkObject *object, void *buf, DLG_DATA_TYPE type)
{
  DLG_DATA *data;

  data = (DLG_DATA*)qmalloc (sizeof(DLG_DATA));
  data->object = object;
  data->buffer = buf;
  data->type = type;

  m_pDataList = g_slist_append (m_pDataList, data);
}

void Dialog::AddModalButton (GtkWidget *widget, int ret)
{
  gtk_signal_connect (GTK_OBJECT (widget), "clicked",
                      GTK_SIGNAL_FUNC (dialog_button_callback), GINT_TO_POINTER (ret));
}

void Dialog::UpdateData (bool retrieve)
  {
  DLG_DATA *data;
  GSList *lst;
  char buf[32];
  
  if (retrieve)
    {
    for (lst = m_pDataList; lst != NULL; lst = g_slist_next (lst))
      {
      data = (DLG_DATA*)lst->data;
      
      switch (data->type)
        {
        case DLG_CHECK_BOOL:
          *(bool*)data->buffer = gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (data->object));
          break;
        case DLG_RADIO_INT:
          {
          GSList *radio = gtk_radio_button_group (GTK_RADIO_BUTTON (data->object));
          *(int*)data->buffer = g_slist_length (radio) - 1;
          for (; radio; radio = g_slist_next (radio))
            if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (radio->data)))
              break;
            else
              (*(int*)data->buffer)--;
          } break;
        case DLG_ENTRY_TEXT:
          {
          const char *txt;
          Str* str;
          str = (Str*)data->buffer;
          txt = gtk_entry_get_text (GTK_ENTRY (data->object));
          *str = txt;
          } break;
        case DLG_ENTRY_FLOAT:
          *(float*)data->buffer = atof (gtk_entry_get_text (GTK_ENTRY (data->object)));
          break;
        case DLG_ENTRY_INT:
          *(int*)data->buffer = atoi (gtk_entry_get_text (GTK_ENTRY (data->object)));
          break;
        case DLG_SPIN_FLOAT:
          *(float*)data->buffer = gtk_spin_button_get_value_as_float (GTK_SPIN_BUTTON (data->object));
          break;
        case DLG_SPIN_INT:
          *(int*)data->buffer = gtk_spin_button_get_value_as_int (GTK_SPIN_BUTTON (data->object));
          break;
        case DLG_ADJ_INT:
          *(int*)data->buffer = (int) GTK_ADJUSTMENT (data->object)->value;
          break;
        case DLG_COMBO_INT:
          {
          GList *lst = GTK_LIST (GTK_COMBO (data->object)->list)->children;
          char *label;
          const char *entry;
          int i;
          
          *(int*)data->buffer = -1;
          entry = gtk_entry_get_text (GTK_ENTRY (GTK_COMBO (data->object)->entry));
          
          for (i = 0; lst != NULL; lst = g_list_next (lst))
            {
            gtk_label_get (GTK_LABEL (GTK_BIN (lst->data)->child), &label);
            
            if (strcmp (label, entry) == 0)
              {
              *(int*)data->buffer = i;
              break;
              }
            i++;
            }
          }     break;
        }
      }
    }
  else
    {
    for (lst = m_pDataList; lst != NULL; lst = g_slist_next (lst))
      {
      data = (DLG_DATA*)lst->data;

      switch (data->type)
        {
        case DLG_CHECK_BOOL:
          gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (data->object), *(bool*)data->buffer);
          break;
        case DLG_RADIO_INT:
          {
          GSList *radio = gtk_radio_button_group (GTK_RADIO_BUTTON (data->object));
          gpointer btn =  g_slist_nth_data (radio, g_slist_length (radio) - (*(int*)data->buffer) - 1);
          gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (btn), TRUE);
          } break;
        case DLG_ENTRY_TEXT:
          {
          Str* str;
          str = (Str*)data->buffer;
          const char *txt = str->GetBuffer ();
          gtk_entry_set_text (GTK_ENTRY (data->object), txt);
          } break;
        case DLG_ENTRY_FLOAT:
          sprintf (buf, "%g", (*(float*)data->buffer));
          gtk_entry_set_text (GTK_ENTRY (data->object), buf);
          break;
        case DLG_ENTRY_INT:
          sprintf (buf, "%d", (*(int*)data->buffer));
          gtk_entry_set_text (GTK_ENTRY (data->object), buf);
          break;
        case DLG_SPIN_FLOAT:
          gtk_spin_button_set_value (GTK_SPIN_BUTTON (data->object), (*(float*)data->buffer));
          break;
        case DLG_SPIN_INT:
          gtk_spin_button_set_value (GTK_SPIN_BUTTON (data->object), (*(int*)data->buffer));
          break;
        case DLG_ADJ_INT:
          gtk_adjustment_set_value (GTK_ADJUSTMENT (data->object), (*(int*)data->buffer));
          break;
        case DLG_COMBO_INT:
          {
          GList *lst = GTK_LIST (GTK_COMBO (data->object)->list)->children;
          char *entry = "";
          
          if (*(int*)data->buffer != -1)
            {
            lst = g_list_nth (lst, *(int*)data->buffer);
            if (lst != NULL)
              gtk_label_get (GTK_LABEL (GTK_BIN (lst->data)->child), &entry);
            }
          
          gtk_entry_set_text (GTK_ENTRY (GTK_COMBO (data->object)->entry), entry);
          }     break;
        }
      }
    }
}

void Dialog::EndModal (int code)
{
  m_nLoop = 0;
  m_nReturn = code;
}

int Dialog::DoModal ()
{
  Create ();
  UpdateData (FALSE);

  PreModal();

  gtk_grab_add (m_pWidget);
  gtk_widget_show (m_pWidget);

  m_nLoop = 1;
  while (m_nLoop)
    gtk_main_iteration ();

  if (m_pWidget != NULL)
  {
    UpdateData (TRUE);

    gtk_grab_remove (m_pWidget);
    gtk_widget_hide (m_pWidget);
  }
  PostModal (m_nReturn);

  return m_nReturn;
}