msw_theme_main.c

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/* MS-Windows Engine (aka GTK-Wimp)
 *
 * Copyright (C) 2003, 2004 Raymond Penners <[e-mail]>
 * Includes code adapted from redmond95 by Owen Taylor, and
 * gtk-nativewin by Evan Martin
 *
 * 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.
 */

#include <windows.h>

#include <gmodule.h>

#include "gtk/gtk.h"

#include "msw_style.h"
#include "msw_rc_style.h"
#include "xp_theme.h"

#ifndef WM_THEMECHANGED
#define WM_THEMECHANGED 0x031A /* winxp only */
#endif

static GModule * this_module = NULL;
static void (*msw_rc_reset_styles) (GtkSettings * settings) = NULL;

static GdkFilterReturn
global_filter_func (void     *xevent,
		    GdkEvent *event,
		    gpointer  data)
{
  MSG *msg = (MSG *) xevent;

  switch (msg->message)
    {
      /* catch theme changes */
    case WM_THEMECHANGED:
    case WM_SYSCOLORCHANGE:

      if(msw_rc_reset_styles != NULL) {
	  	xp_theme_reset ();
	  	msw_style_init ();

	  	/* force all gtkwidgets to redraw */
		(*msw_rc_reset_styles) (gtk_settings_get_default());
	  }

      return GDK_FILTER_REMOVE;

    case WM_SETTINGCHANGE:
      /* catch cursor blink, etc... changes */
      msw_style_setup_system_settings ();
      return GDK_FILTER_REMOVE;

    default:
      return GDK_FILTER_CONTINUE;
    }
}

G_MODULE_EXPORT void
theme_init (GTypeModule *module)
{
  msw_rc_style_register_type (module);
  msw_style_register_type (module);

  /* this craziness is required because only gtk 2.4.x and later have
     gtk_rc_reset_styles(). But we want to be able to run acceptly well
     on any GTK 2.x.x platform. */
  if(gtk_check_version(2,4,0) == NULL) {
    this_module = g_module_open(NULL, 0);

    if(this_module)
      g_module_symbol (this_module, "gtk_rc_reset_styles",
		       (gpointer *)(&msw_rc_reset_styles));
  }

  msw_style_init ();
  gdk_window_add_filter (NULL, global_filter_func, NULL);
}

G_MODULE_EXPORT void
theme_exit (void)
{
  gdk_window_remove_filter (NULL, global_filter_func, NULL);

  if(this_module) {
    g_module_close(this_module);
    this_module = NULL;
  }
}

G_MODULE_EXPORT GtkRcStyle *
theme_create_rc_style (void)
{
  return g_object_new (MSW_TYPE_RC_STYLE, NULL);
}

/* The following function will be called by GTK+ when the module
 * is loaded and checks to see if we are compatible with the
 * version of GTK+ that loads us.
 */
G_MODULE_EXPORT const gchar*
g_module_check_init (GModule *module)
{
  return gtk_check_version (2,0,0);
}