message buffer when echo_area_glyphs is pointing at it, relocate
echo_area_glyphs too. Same for previous_echo_glyphs.
* window.h (previous_echo_glyphs): Add extern declaration for this.
GC'd; this allows windows and scrollbars can refer to each other
without worrying about dangling pointers.
* xterm.h (struct x_display): vertical_scrollbars and
judge_timestamp members deleted.
(struct scrollbar): Redesigned to be a template for a Lisp_Vector.
(SCROLLBAR_VEC_SIZE, XSCROLLBAR, SCROLLBAR_PACK, SCROLLBAR_UNPACK,
SCROLLBAR_X_WINDOW, SET_SCROLLBAR_X_WINDOW,
VERTICAL_SCROLLBAR_INSIDE_WIDTH, VERTICAL_SCROLLBAR_TOP_RANGE,
VERTICAL_SCROLLBAR_INSIDE_HEIGHT, VERTICAL_SCROLLBAR_MIN_HANDLE):
New macros, to help deal with the lispy structures, and deal with
the graphics.
* frame.h (WINDOW_VERTICAL_SCROLLBAR): Macro deleted.
(struct frame): New fields `scrollbars' and
`condemned_scrollbars', for use by the scrollbar implementation.
[MULTI_FRAME and not MULTI_FRAME] (FRAME_SCROLLBARS,
FRAME_CONDEMNED_SCROLLBARS): Accessors for the new field.
* window.h (struct window): Doc fix for vertical_scrollbar field.
* frame.c (make_frame): Initialize the `scrollbars' and
`condemned_scrollbars' fields of the new frame.
* alloc.c (mark_object): Mark the `scrollbars' and
`condemned_scrollbars' slots of frames.
* xterm.c (x_window_to_scrollbar): Scrollbars are chained on
frames' scrollbar field, not their x.display->vertical_scrollbars
field.
(x_scrollbar_create, x_scrollbar_set_handle, x_scrollbar_move,
x_scrollbar_remove, XTset_vertical_scrollbar,
XTcondemn_scrollbars, XTredeem_scrollbar, XTjudge_scrollbars,
x_scrollbar_expose, x_scrollbar_handle_click,
x_scrollbar_handle_motion): Substantially rewritten to correct
typos and brainos, and to accomodate the lispy structures.
`has_vertical_scrollbars'.
(FRAME_CAN_HAVE_SCROLLBARS, FRAME_HAS_VERTICAL_SCROLLBARS): New
accessors, for both the MULTI_FRAME and non-MULTI_FRAME.
(VERTICAL_SCROLLBAR_WIDTH, WINDOW_VERTICAL_SCROLLBAR,
WINDOW_VERTICAL_SCROLLBAR_COLUMN,
WINDOW_VERTICAL_SCROLLBAR_HEIGHT): New macros.
* window.h (struct window): New field `vertical_scrollbar'.
* xterm.h (struct x_display): vertical_scrollbars,
judge_timestamp, vertical_scrollbar_extra: New fields.
(struct scrollbar): New struct.
(VERTICAL_SCROLLBAR_PIXEL_WIDTH, VERTICAL_SCROLLBAR_PIXEL_HEIGHT,
VERTICAL_SCROLLBAR_LEFT_BORDER, VERTICAL_SCROLLBAR_RIGHT_BORDER,
VERTICAL_SCROLLBAR_TOP_BORDER, VERTICAL_SCROLLBAR_BOTTOM_BORDER,
CHAR_TO_PIXEL_WIDTH, CHAR_TO_PIXEL_HEIGHT, PIXEL_TO_CHAR_WIDTH,
PIXEL_TO_CHAR_HEIGHT): New accessors and macros.
* frame.c (make_frame): Initialize the `can_have_scrollbars' and
`has_vertical_scrollbars' fields of the frame.
* term.c (term_init): Note that TERMCAP terminals don't support
scrollbars.
(mouse_position_hook): Document new args.
(set_vertical_scrollbar_hook, condemn_scrollbars_hook,
redeem_scrollbar_hook, judge_scrollbars_hook): New hooks.
* termhooks.h: Declare and document them.
(enum scrollbar_part): New type.
(struct input_event): Describe the new form of the scrollbar_click
event type. Change `part' from a Lisp_Object to an enum
scrollbar_part. Add a new field `scrollbar'.
* keyboard.c (kbd_buffer_get_event): Pass appropriate new
parameters to *mouse_position_hook, and make_lispy_movement.
* xfns.c (x_set_vertical_scrollbar): New function.
(x_figure_window_size): Use new macros to calculate frame size.
(Fx_create_frame): Note that X Windows frames do support scroll
bars. Default to "yes".
* xterm.c: #include <X11/cursorfont.h> and "window.h".
(x_vertical_scrollbar_cursor): New variable.
(x_term_init): Initialize it.
(last_mouse_bar, last_mouse_bar_frame, last_mouse_part,
last_mouse_scroll_range_start, last_mouse_scroll_range_end): New
variables.
(XTmouse_position): Use them to return scrollbar movement events.
Take new arguments, for that purpose.
(x_window_to_scrollbar, x_scrollbar_create,
x_scrollbar_set_handle, x_scrollbar_remove, x_scrollbar_move,
XTset_scrollbar, XTcondemn_scrollbars, XTredeem_scrollbar,
XTjudge_scrollbars, x_scrollbar_expose,
x_scrollbar_background_expose, x_scrollbar_handle_click,
x_scrollbar_handle_motion): New functions to implement scrollbars.
(x_term_init): Set the termhooks.h hooks to point to them.
(x_set_window_size): Use new macros to calculate frame size. Set
vertical_scrollbar_extra field.
(x_make_frame_visible): Use the frame accessor
FRAME_HAS_VERTICAL_SCROLLBARS to decide if we need to map the
frame's subwindows as well.
(XTread_socket): Use new size-calculation macros from xterm.h when
processing ConfigureNotify events.
(x_wm_set_size_hint): Use PIXEL_TO_CHAR_WIDTH and
PIXEL_TO_CHAR_HEIGHT macros.
* ymakefile (xdisp.o): This now depends on termhooks.h.
(xterm.o): This now depends on window.h.
