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tool-bar-button-margin control margins of images in tool bar.

(xg_get_file_name): Block and unblock __SIGRTMIN if defined.

* alloc.c: If HAVE_GTK_AND_PTHREAD, include pthread.h,
new variables main_thread and alloc_mutex,
define (UN)BLOCK_INPUT_ALLOC to use alloc_mutex to protect
emacs_blocked_* calls and only do (UN)BLOCK_INPUT in the main thread.
If not HAVE_GTK_AND_PTHREAD, (UN)BLOCK_INPUT_ALLOC is the same as
(UN)BLOCK_INPUT.
(emacs_blocked_free, emacs_blocked_malloc)
(emacs_blocked_realloc): Use (UN)BLOCK_INPUT_ALLOC.
(uninterrupt_malloc): Initialize main_thread and alloc_mutex.
(reset_malloc_hooks): New function.

* lisp.h: Declare reset_malloc_hooks.

* emacs.c (Fdump_emacs): Call reset_malloc_hooks.

* keyboard.c: Conditionally include pthread.h
(handle_async_inpu, input_available_signalt): If not in the main
thread, block signal, send signal to main thread and return.

Set current folder in file chooser if default_filename is a
directory.

x-use-old-gtk-file-dialog.

* xfns.c: Define x_use_old_gtk_file_dialog.
(syms_of_xfns): Rename use-old-gtk-file-dialog to x-...  Move it
outside ifdef USE_GTK.

  HAVE_GTK_FILE_SELECTION_NEW.

(xg_file_sel_destroy): Removed.
(xg_file_response_cb, pop_down_file_dialog,
xg_get_file_name_from_chooser, xg_get_file_name_from_selector):
New functions.
(xg_get_file_with_chooser, xg_get_file_with_selection): Take
new argument func, set it to xg_get_file_name_from_chooser/selector.
Move common code to xg_get_file_name.  Return widget created.
(xg_get_file_name): Set name, transient for, modal and destroy
with parent here.  Connect response signal to xg_file_response_cb,
connect delete-event to gtk_true.  Record pop_down_file_dialog
for unwind.  Do event loop and call x_menu_wait_for_event in loop.
(xg_create_widget): Make dialogs modal.

* gtkutil.c: Make use_old_gtk_file_dialog non-static.
(xg_initialize): Moved DEFVAR_BOOL for use_old_gtk_file_dialog ...
* xfns.c (syms_of_xfns): ... to here.

it doesn't start with /.

of save.

Fx_file_dialog if only directories should be read.

* lisp.h: Fx_file_dialog takes 5 parameters.

* xfns.c (Fx_file_dialog): Both Motif and GTK version:  Add
parameter only_dir_p.
In Motif version, don't put DEFAULT_FILENAME in filter part of the
dialog, just text field part.  Do not add DEFAULT_FILENAME
to list of files if it isn't there.
In GTK version, pass only_dir_p parameter to xg_get_file_name.

* macfns.c (Fx_file_dialog): Add parameter only_dir_p.  Check
only_dir_p instead of comparing prompt to "Dired".  When using
a save dialog, add option kNavDontConfirmReplacement, change title
to "Enter name", change text for save button to "Ok".

* w32fns.c (Fx_file_dialog): Add parameter only_dir_p.  Check
only_dir_p instead of comparing prompt to "Dired".

* gtkutil.c (xg_get_file_with_chooser)
(xg_get_file_with_selection): New functions, only defined ifdef
HAVE_GTK_FILE_CHOOSER_DIALOG_NEW and HAVE_GTK_FILE_SELECTION_NEW
respectively.
(xg_get_file_name): Add parameter only_dir_p.
Call xg_get_file_with_chooser or xg_get_file_with_selection
depending on HAVE_GTK_FILE* and the value of use_old_gtk_file_dialog.
(xg_initialize): New DEFVAR_BOOL use_old_gtk_file_dialog.

* gtkutil.h (xg_get_file_name): Add parameter only_dir_p.

(xg_destroy_widgets): Renamed from remove_from_container.  Just
destroy all widgets in list.  Argument wcont removed.
(xg_update_menubar, xg_update_submenu): Call xg_destroy_widgets
instead of remove_from_container.
(xg_display_close, xg_create_tool_bar, update_frame_tool_bar)
(free_frame_tool_bar): Add comment.

xg_find_top_left_in_fixed): Removed.
(xg_create_scroll_bar): Put an event box widget between
the scroll bar widget and the edit widget.
(xg_show_scroll_bar): Show the parent widget (the event box).
(xg_remove_scroll_bar): Destroy parent (the event box) also.
(xg_update_scrollbar_pos): Remove arguments real_left and canon_width.
Move the parent (the event box) widget inside the fixed widget.
Move window clear to xterm.c.

gdk_window_clear and move gdk_window_process_all_updates after
clear so events are sent to the X server in correct order.

  tool bar items is 0.

so insensitive and activated icons look ok.

gpix and gmask just before return to avoid memory leak.

(xg_get_gdk_pixmap_and_mask): Removed.
(update_frame_tool_bar): Call xg_get_image_for_pixmap instead of
xg_get_gdk_pixmap_and_mask.

  "under" scroll bar when size/position changes.

Since the context in Lisp is not present anymore, we don't know
how to invoke the action for a menu item.

data to kbd_buffer_store_event.

  menu item label.

(xg_create_frame_widgets): Use ENCODE_UTF_8.

new macros in dispextern.h, frame.h and window.h.

(make_menu_item, create_menus, xg_update_menu_item): Don't call
..._with_mnemonic functions for menu items.

get GtkAdjustment as widget now is a GtkRange.

* gtkutil.c (xg_create_scroll_bar): Connect to value-changed on
GtkRange to avoid memory leak.

of area to be redrawn for better performance.

(xg_frame_set_char_size): Calculate scroll bar width before frame
width.  Call SET_FRAME_GARBAGED and cancel_mouse_face.
(xg_separator_p): Check for all documented separator types.
(xg_update_scrollbar_pos): Variable gheight not needed, use height.
(update_frame_tool_bar): Don't call gdk_window_process_all_updates.

    all widgets.

  equal old values before updating.

scroll bar behaviour.