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Gimp/app/gui/gui.c
Michael Natterer cdb165874f if the active display becomes NULL (e.g. by closing a view), don't leave 
2004-11-24  Michael Natterer  <mitch@gimp.org>

	* app/gui/gui.c (gui_display_changed): if the active display
	becomes NULL (e.g. by closing a view), don't leave the user
	context with an image but no display. Instead, try to find another
	display of the same image instead and if that fails set the image
	to NULL.

	Prevents the various foo_actions_update() functions from being
	called with a NULL display while there is still an active image in
	the context.

	Fixes bug #159304.

	(Removed #warning about being misplaced from that function because
	it's a typical piece of ugly glue code that belongs exactly here).
2004-11-24 16:41:52 +00:00

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/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* This program 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.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <stdlib.h>
#include <gtk/gtk.h>
#include "libgimpbase/gimpbase.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "libgimpwidgets/gimpwidgets-private.h"
#include "gui-types.h"
#include "config/gimpguiconfig.h"
#include "core/gimp.h"
#include "core/gimpcontainer.h"
#include "core/gimpcontext.h"
#include "core/gimpenvirontable.h"
#include "core/gimpimage.h"
#include "core/gimplist.h"
#include "core/gimptoolinfo.h"
#include "display/gimpdisplay.h"
#include "display/gimpdisplay-foreach.h"
#include "display/gimpdisplayshell.h"
#include "display/gimpdisplayshell-render.h"
#include "tools/gimp-tools.h"
#include "widgets/gimpclipboard.h"
#include "widgets/gimpcontrollers.h"
#include "widgets/gimpdevices.h"
#include "widgets/gimpdevicestatus.h"
#include "widgets/gimpdialogfactory.h"
#include "widgets/gimpdnd.h"
#include "widgets/gimphelp.h"
#include "widgets/gimphelp-ids.h"
#include "widgets/gimpmenufactory.h"
#include "widgets/gimpmessagebox.h"
#include "widgets/gimpsessioninfo.h"
#include "widgets/gimpuimanager.h"
#include "widgets/gimpwidgets-utils.h"
#include "actions/actions.h"
#include "actions/dialogs-commands.h"
#include "menus/menus.h"
#include "dialogs/dialogs.h"
#include "color-history.h"
#include "gui.h"
#include "gui-vtable.h"
#include "session.h"
#include "splash.h"
#include "themes.h"
#include "gimp-intl.h"
/* local function prototypes */
static gchar * gui_sanity_check (void);
static void gui_help_func (const gchar *help_id,
gpointer help_data);
static gboolean gui_get_background_func (GimpRGB *color);
static gboolean gui_get_foreground_func (GimpRGB *color);
static void gui_initialize_after_callback (Gimp *gimp,
GimpInitStatusFunc callback);
static void gui_restore_callback (Gimp *gimp,
GimpInitStatusFunc callback);
static void gui_restore_after_callback (Gimp *gimp,
GimpInitStatusFunc callback);
static gboolean gui_exit_callback (Gimp *gimp,
gboolean force);
static gboolean gui_exit_after_callback (Gimp *gimp,
gboolean force);
static void gui_show_tooltips_notify (GimpGuiConfig *gui_config,
GParamSpec *pspec,
Gimp *gimp);
static void gui_show_help_button_notify (GimpGuiConfig *gui_config,
GParamSpec *pspec,
Gimp *gimp);
static void gui_tearoff_menus_notify (GimpGuiConfig *gui_config,
GParamSpec *pspec,
GtkUIManager *manager);
static void gui_device_change_notify (Gimp *gimp);
static void gui_display_changed (GimpContext *context,
GimpDisplay *display,
Gimp *gimp);
static void gui_image_disconnect (GimpImage *gimage,
Gimp *gimp);
/* private variables */
static Gimp *the_gui_gimp = NULL;
static GQuark image_disconnect_handler_id = 0;
static GimpUIManager *image_ui_manager = NULL;
/* public functions */
gboolean
gui_libs_init (gint *argc,
gchar ***argv)
{
gchar *abort_message;
g_return_val_if_fail (argc != NULL, FALSE);
g_return_val_if_fail (argv != NULL, FALSE);
if (! gtk_init_check (argc, argv))
return FALSE;
abort_message = gui_sanity_check ();
if (abort_message)
gui_abort (abort_message);
gimp_widgets_init (gui_help_func,
gui_get_foreground_func,
gui_get_background_func,
NULL);
g_type_class_ref (GIMP_TYPE_COLOR_SELECT);
return TRUE;
}
void
gui_abort (const gchar *abort_message)
{
GtkWidget *dialog;
GtkWidget *box;
g_return_if_fail (abort_message != NULL);
dialog = gimp_dialog_new (_("GIMP Message"), "gimp-abort",
NULL, GTK_DIALOG_MODAL, NULL, NULL,
GTK_STOCK_OK, GTK_RESPONSE_OK,
NULL);
gtk_window_set_resizable (GTK_WINDOW (dialog), FALSE);
box = g_object_new (GIMP_TYPE_MESSAGE_BOX,
"stock_id", GIMP_STOCK_WILBER_EEK,
"border_width", 12,
NULL);
gimp_message_box_set_text (GIMP_MESSAGE_BOX (box), abort_message);
gtk_container_add (GTK_CONTAINER (GTK_DIALOG (dialog)->vbox), box);
gtk_widget_show (box);
gimp_dialog_run (GIMP_DIALOG (dialog));
exit (EXIT_FAILURE);
}
GimpInitStatusFunc
gui_init (Gimp *gimp,
gboolean no_splash)
{
GimpInitStatusFunc status_callback = NULL;
GdkScreen *screen;
g_return_val_if_fail (GIMP_IS_GIMP (gimp), NULL);
g_return_val_if_fail (the_gui_gimp == NULL, NULL);
the_gui_gimp = gimp;
gimp_dnd_init (gimp);
themes_init (gimp);
gdk_rgb_set_min_colors (CLAMP (gimp->config->min_colors, 27, 256));
gdk_rgb_set_install (gimp->config->install_cmap);
screen = gdk_screen_get_default ();
gtk_widget_set_default_colormap (gdk_screen_get_rgb_colormap (screen));
if (! no_splash)
{
splash_create ();
status_callback = splash_update;
}
g_signal_connect_after (gimp, "initialize",
G_CALLBACK (gui_initialize_after_callback),
NULL);
g_signal_connect (gimp, "restore",
G_CALLBACK (gui_restore_callback),
NULL);
g_signal_connect_after (gimp, "restore",
G_CALLBACK (gui_restore_after_callback),
NULL);
g_signal_connect (gimp, "exit",
G_CALLBACK (gui_exit_callback),
NULL);
g_signal_connect_after (gimp, "exit",
G_CALLBACK (gui_exit_after_callback),
NULL);
return status_callback;
}
void
gui_post_init (Gimp *gimp)
{
g_return_if_fail (GIMP_IS_GIMP (gimp));
if (GIMP_GUI_CONFIG (gimp->config)->show_tips)
gimp_dialog_factory_dialog_new (global_dialog_factory,
gdk_screen_get_default (),
"gimp-tips-dialog", -1, TRUE);
}
/* private functions */
static gchar *
gui_sanity_check (void)
{
const gchar *mismatch;
#define GTK_REQUIRED_MAJOR 2
#define GTK_REQUIRED_MINOR 4
#define GTK_REQUIRED_MICRO 4
mismatch = gtk_check_version (GTK_REQUIRED_MAJOR,
GTK_REQUIRED_MINOR,
GTK_REQUIRED_MICRO);
if (mismatch)
return g_strdup_printf
("%s\n\n"
"The GIMP requires Gtk+ version %d.%d.%d or later.\n"
"Installed Gtk+ version is %d.%d.%d.\n\n"
"Somehow you or your software packager managed\n"
"to install The GIMP with an older Gtk+ version.\n\n"
"Please upgrade to Gtk+ version %d.%d.%d or later.",
mismatch,
GTK_REQUIRED_MAJOR, GTK_REQUIRED_MINOR, GTK_REQUIRED_MICRO,
gtk_major_version, gtk_minor_version, gtk_micro_version,
GTK_REQUIRED_MAJOR, GTK_REQUIRED_MINOR, GTK_REQUIRED_MICRO);
#undef GTK_REQUIRED_MAJOR
#undef GTK_REQUIRED_MINOR
#undef GTK_REQUIRED_MICRO
return NULL;
}
static void
gui_help_func (const gchar *help_id,
gpointer help_data)
{
g_return_if_fail (GIMP_IS_GIMP (the_gui_gimp));
gimp_help (the_gui_gimp, NULL, help_id);
}
static gboolean
gui_get_foreground_func (GimpRGB *color)
{
g_return_val_if_fail (color != NULL, FALSE);
g_return_val_if_fail (GIMP_IS_GIMP (the_gui_gimp), FALSE);
gimp_context_get_foreground (gimp_get_user_context (the_gui_gimp), color);
return TRUE;
}
static gboolean
gui_get_background_func (GimpRGB *color)
{
g_return_val_if_fail (color != NULL, FALSE);
g_return_val_if_fail (GIMP_IS_GIMP (the_gui_gimp), FALSE);
gimp_context_get_background (gimp_get_user_context (the_gui_gimp), color);
return TRUE;
}
static void
gui_initialize_after_callback (Gimp *gimp,
GimpInitStatusFunc status_callback)
{
const gchar *name = NULL;
g_return_if_fail (GIMP_IS_GIMP (gimp));
if (gimp->be_verbose)
g_print ("INIT: gui_initialize_after_callback\n");
#if defined (GDK_WINDOWING_X11)
name = "DISPLAY";
#elif defined (GDK_WINDOWING_DIRECTFB) || defined (GDK_WINDOWING_FB)
name = "GDK_DISPLAY";
#endif
/* TODO: Need to care about display migration with GTK+ 2.2 at some point */
if (name)
{
gchar *display;
display = gdk_get_display ();
gimp_environ_table_add (gimp->environ_table, name, display, NULL);
g_free (display);
}
gimp_tools_init (gimp);
gimp_context_set_tool (gimp_get_user_context (gimp),
gimp_tool_info_get_standard (gimp));
}
static void
gui_restore_callback (Gimp *gimp,
GimpInitStatusFunc status_callback)
{
GimpDisplayConfig *display_config = GIMP_DISPLAY_CONFIG (gimp->config);
GimpGuiConfig *gui_config = GIMP_GUI_CONFIG (gimp->config);
if (gimp->be_verbose)
g_print ("INIT: gui_restore_callback\n");
gui_vtable_init (gimp);
image_disconnect_handler_id =
gimp_container_add_handler (gimp->images, "disconnect",
G_CALLBACK (gui_image_disconnect),
gimp);
if (! gui_config->show_tool_tips)
gimp_help_disable_tooltips ();
g_signal_connect (gui_config, "notify::show-tool-tips",
G_CALLBACK (gui_show_tooltips_notify),
gimp);
gimp_dialogs_show_help_button (gui_config->use_help &&
gui_config->show_help_button);
g_signal_connect (gui_config, "notify::use-help",
G_CALLBACK (gui_show_help_button_notify),
gimp);
g_signal_connect (gui_config, "notify::show-help-button",
G_CALLBACK (gui_show_help_button_notify),
gimp);
g_signal_connect (gimp_get_user_context (gimp), "display_changed",
G_CALLBACK (gui_display_changed),
gimp);
/* make sure the monitor resolution is valid */
if (display_config->monitor_res_from_gdk ||
display_config->monitor_xres < GIMP_MIN_RESOLUTION ||
display_config->monitor_yres < GIMP_MIN_RESOLUTION)
{
gdouble xres, yres;
gimp_get_screen_resolution (NULL, &xres, &yres);
g_object_set (gimp->config,
"monitor-xresolution", xres,
"monitor-yresolution", yres,
"monitor-resolution-from-windowing-system", TRUE,
NULL);
}
actions_init (gimp);
menus_init (gimp, global_action_factory);
render_init (gimp);
dialogs_init (gimp, global_menu_factory);
gimp_clipboard_init (gimp);
gimp_devices_init (gimp, gui_device_change_notify);
gimp_controllers_init (gimp);
session_init (gimp);
(* status_callback) (NULL, _("Tool Options"), 1.0);
gimp_tools_restore (gimp);
}
static void
gui_restore_after_callback (Gimp *gimp,
GimpInitStatusFunc status_callback)
{
GimpGuiConfig *gui_config = GIMP_GUI_CONFIG (gimp->config);
if (gimp->be_verbose)
g_print ("INIT: gui_restore_after_callback\n");
gimp->message_handler = GIMP_MESSAGE_BOX;
if (gui_config->restore_accels)
menus_restore (gimp);
image_ui_manager = gimp_menu_factory_manager_new (global_menu_factory,
"<Image>",
gimp,
gui_config->tearoff_menus);
g_signal_connect_object (gui_config, "notify::tearoff-menus",
G_CALLBACK (gui_tearoff_menus_notify),
image_ui_manager, 0);
gimp_devices_restore (gimp);
gimp_controllers_restore (gimp, image_ui_manager);
if (status_callback == splash_update)
splash_destroy ();
color_history_restore ();
if (gui_config->restore_session)
session_restore (gimp);
dialogs_show_toolbox ();
}
static gboolean
gui_exit_callback (Gimp *gimp,
gboolean force)
{
GimpGuiConfig *gui_config = GIMP_GUI_CONFIG (gimp->config);
if (gimp->be_verbose)
g_print ("EXIT: gui_exit_callback\n");
if (! force && gimp_displays_dirty (gimp))
{
gimp_dialog_factory_dialog_raise (global_dialog_factory,
gdk_screen_get_default (),
"gimp-quit-dialog", -1);
return TRUE; /* stop exit for now */
}
gimp->message_handler = GIMP_CONSOLE;
if (gui_config->save_session_info)
session_save (gimp, FALSE);
color_history_save ();
if (gui_config->save_accels)
menus_save (gimp, FALSE);
if (gui_config->save_device_status)
gimp_devices_save (gimp, FALSE);
if (TRUE /* gui_config->save_controllers */)
gimp_controllers_save (gimp);
gimp_displays_delete (gimp);
gimp_tools_save (gimp);
gimp_tools_exit (gimp);
return FALSE; /* continue exiting */
}
static gboolean
gui_exit_after_callback (Gimp *gimp,
gboolean force)
{
if (gimp->be_verbose)
g_print ("EXIT: gui_exit_after_callback\n");
g_signal_handlers_disconnect_by_func (gimp->config,
gui_show_help_button_notify,
gimp);
g_signal_handlers_disconnect_by_func (gimp->config,
gui_show_tooltips_notify,
gimp);
gimp_container_remove_handler (gimp->images, image_disconnect_handler_id);
image_disconnect_handler_id = 0;
g_object_unref (image_ui_manager);
image_ui_manager = NULL;
session_exit (gimp);
menus_exit (gimp);
actions_exit (gimp);
render_exit (gimp);
dialogs_exit (gimp);
gimp_controllers_exit (gimp);
gimp_devices_exit (gimp);
gimp_clipboard_exit (gimp);
themes_exit (gimp);
g_type_class_unref (g_type_class_peek (GIMP_TYPE_COLOR_SELECT));
return FALSE; /* continue exiting */
}
static void
gui_show_tooltips_notify (GimpGuiConfig *gui_config,
GParamSpec *param_spec,
Gimp *gimp)
{
if (gui_config->show_tool_tips)
gimp_help_enable_tooltips ();
else
gimp_help_disable_tooltips ();
}
static void
gui_show_help_button_notify (GimpGuiConfig *gui_config,
GParamSpec *param_spec,
Gimp *gimp)
{
gimp_dialogs_show_help_button (gui_config->use_help &&
gui_config->show_help_button);
}
static void
gui_tearoff_menus_notify (GimpGuiConfig *gui_config,
GParamSpec *pspec,
GtkUIManager *manager)
{
gtk_ui_manager_set_add_tearoffs (manager, gui_config->tearoff_menus);
}
static void
gui_device_change_notify (Gimp *gimp)
{
GimpSessionInfo *session_info;
session_info = gimp_dialog_factory_find_session_info (global_dock_factory,
"gimp-device-status");
if (session_info && session_info->widget)
{
GtkWidget *device_status;
device_status = GTK_BIN (session_info->widget)->child;
gimp_device_status_update (GIMP_DEVICE_STATUS (device_status));
}
}
static void
gui_display_changed (GimpContext *context,
GimpDisplay *display,
Gimp *gimp)
{
if (! display)
{
GimpImage *image = gimp_context_get_image (context);
if (image)
{
GList *list;
for (list = GIMP_LIST (gimp->displays)->list;
list;
list = g_list_next (list))
{
GimpDisplay *display2 = list->data;
if (display2->gimage == image)
{
gimp_context_set_display (context, display2);
return;
}
}
gimp_context_set_image (context, NULL);
}
}
gimp_ui_manager_update (image_ui_manager, display);
}
static void
gui_image_disconnect (GimpImage *gimage,
Gimp *gimp)
{
/* check if this is the last image and if it had a display */
if (gimp_container_num_children (gimp->images) == 1 &&
gimage->instance_count > 0)
{
dialogs_show_toolbox ();
}
}
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