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- /* Define screen-object for GNU Emacs.
- Copyright (C) 1988, 1992, 1993 Free Software Foundation, Inc.
-
- This file is part of GNU Emacs.
-
- GNU Emacs 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, or (at your option)
- any later version.
-
- GNU Emacs 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 GNU Emacs; see the file COPYING. If not, write to
- the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- #ifndef _EMACS_SCREEN_H_
- #define _EMACS_SCREEN_H_
-
- #ifdef MULTI_SCREEN
-
- enum output_method
- { output_termcap, output_x_window };
-
- #include "dispextern.h"
-
- struct screen
- {
- int size;
- struct Lisp_Vector *next;
-
- /* glyphs as they appear on the screen */
- struct screen_glyphs *current_glyphs;
-
- /* glyphs we'd like to appear on the screen */
- struct screen_glyphs *desired_glyphs;
-
- /* Cost of inserting 1 line on this screen */
- int *insert_line_cost;
-
- /* Cost of deleting 1 line on this screen */
- int *delete_line_cost;
-
- /* Cost of inserting n lines on this screen */
- int *insert_n_lines_cost;
-
- /* Cost of deleting n lines on this screen */
- int *delete_n_lines_cost;
-
- /* glyphs for the mode line */
- struct screen_glyphs *temp_glyphs;
-
- /* Intended cursor position of this screen.
- Measured in characters, counting from upper left corner
- within the screen. */
- int cursor_x;
- int cursor_y;
-
- /* Is the cursor turned off? */
- int cursor_erased;
-
- /* Actual cursor position of this screen.
- (Not used for terminal screens.) */
- int phys_cursor_x;
- int phys_cursor_y;
-
- /* Size of this screen, in units of characters. */
- int height;
- int width;
-
- /* New height and width for pending size change. 0 if no change pending. */
- int new_height, new_width;
-
- /* Name of this screen: a Lisp string. */
- Lisp_Object name;
-
- /* This screen's root window. Every screen has one.
- If the screen has only a minibuffer window, this is it.
- Otherwise, if the screen has a minibuffer window, this is its sibling. */
- Lisp_Object root_window;
-
- /* This screen's selected window.
- Each screen has its own window hierarchy
- and one of the windows in it is selected within the screen.
- The selected window of the selected screen is Emacs's selected window. */
- Lisp_Object selected_window;
-
- /* This screen's minibuffer window.
- Most screens have their own minibuffer windows,
- but only the selected screen's minibuffer window
- can actually appear to exist. */
- Lisp_Object minibuffer_window;
-
- /* A copy of the global Vbuffer_list, to maintain a per-screen buffer
- ordering. The Vbuffer_list variable and the buffer_list slot of each
- screen contain exactly the same data, just in different orders. */
- Lisp_Object buffer_alist;
-
- /* Parameter alist of this screen.
- These are the parameters specified when creating the screen
- or modified with modify-screen-parameters. */
- Lisp_Object param_alist;
-
- /* Vector representing the menubar currently displayed. See menubar.c. */
- Lisp_Object menubar_data;
-
- /* The output method says how the contents of this screen
- are displayed. It could be using termcap, or using an X window. */
- enum output_method output_method;
-
- /* A structure of auxiliary data used for displaying the contents.
- struct x_display is used for X window screens;
- it is defined in xterm.h. */
- union display { struct x_display *x; int nothing; } display;
-
- /* Nonzero if last attempt at redisplay on this screen was preempted. */
- char display_preempted;
-
- /* Nonzero if screen is currently displayed. */
- char visible;
-
- /* Nonzero if window is currently iconified.
- This and visible are mutually exclusive. */
- char iconified;
-
- /* Nonzero if this screen should be redrawn. */
- char garbaged;
-
- /* True if screen actually has a minibuffer window on it.
- 0 if using a minibuffer window that isn't on this screen. */
- char has_minibuffer;
-
- /* 0 means, if this screen has just one window,
- show no modeline for that window. */
- char wants_modeline;
-
- /* True if screen's root window can't be split. */
- char no_split;
-
- /* Storage for messages to this screen. */
- char *message_buf;
-
- /* list of faces */
- struct face** faces;
- int n_faces;
-
- /* the lisp data (shadowing the C data) */
- Lisp_Object face_alist;
- };
-
- typedef struct screen *SCREEN_PTR;
-
- #ifdef emacs
-
- #define XSCREEN(p) ((struct screen *) XPNTR (p))
- #define XSETSCREEN(p, v) ((struct screen *) XSETPNTR (p, v))
-
- #define WINDOW_SCREEN(w) (w)->screen
-
- #define SET_SCREEN_GARBAGED(s) (screen_garbaged = 1, s->garbaged = 1)
- #define SCREEN_IS_TERMCAP(s) ((s)->output_method == output_termcap)
- #define SCREEN_IS_X(s) ((s)->output_method == output_x_window)
- #define SCREEN_CURRENT_GLYPHS(s) (s)->current_glyphs
- #define SCREEN_DESIRED_GLYPHS(s) (s)->desired_glyphs
- #define SCREEN_TEMP_GLYPHS(s) (s)->temp_glyphs
- #define SCREEN_HEIGHT(s) (s)->height
- #define SCREEN_WIDTH(s) (s)->width
- #define SCREEN_NEW_HEIGHT(s) (s)->new_height
- #define SCREEN_NEW_WIDTH(s) (s)->new_width
- #define SCREEN_CURSOR_X(s) (s)->cursor_x
- #define SCREEN_CURSOR_Y(s) (s)->cursor_y
- #define SCREEN_VISIBLE_P(s) (s)->visible
- #define SCREEN_GARBAGED_P(s) (s)->garbaged
- #define SCREEN_NO_SPLIT_P(s) (s)->no_split
- #define SCREEN_WANTS_MODELINE_P(s) (s)->wants_modeline
- #define SCREEN_ICONIFIED_P(s) (s)->iconified
- #define SCREEN_MINIBUF_WINDOW(s) (s)->minibuffer_window
- #define SCREEN_ROOT_WINDOW(s) (s)->root_window
- #define SCREEN_SELECTED_WINDOW(s) (s)->selected_window
- #define SET_GLYPHS_SCREEN(glyphs,screen) ((glyphs)->screen = (screen))
- #define SCREEN_INSERT_COST(s) (s)->insert_line_cost
- #define SCREEN_DELETE_COST(s) (s)->delete_line_cost
- #define SCREEN_INSERTN_COST(s) (s)->insert_n_lines_cost
- #define SCREEN_DELETEN_COST(s) (s)->delete_n_lines_cost
- #define SCREEN_MESSAGE_BUF(s) (s)->message_buf
-
- #define SCREEN_NORMAL_FACE(s) (*(s)->faces [0])
- #define SCREEN_MODELINE_FACE(s) (*(s)->faces [1])
- #define SCREEN_HIGHLIGHT_FACE(s) (*(s)->faces [2])
-
- #define CHECK_SCREEN(x, i) \
- { if (!SCREENP ((x))) x = wrong_type_argument (Qscreenp, (x)); }
- extern Lisp_Object Qscreenp;
-
- extern struct screen *selected_screen;
-
- extern struct screen *make_terminal_screen ();
- extern struct screen *make_screen ();
- /*extern struct screen *make_minibuffer_screen ();*/
- /*extern struct screen *make_screen_without_minibuffer ();*/
-
- extern Lisp_Object Vscreen_list;
- extern Lisp_Object Vglobal_minibuffer_screen;
-
- extern Lisp_Object Vterminal_screen;
-
- #endif /* emacs */
-
-
- #else /* not MULTI_SCREEN */
-
- #ifdef emacs
-
- /* These definitions are used in a single-screen version of Emacs. */
-
- #define SCREEN_PTR int
-
- extern int selected_screen;
-
- #define XSCREEN(s) selected_screen
- #define WINDOW_SCREEN(w) selected_screen
-
- #define SET_SCREEN_GARBAGED(s) (screen_garbaged = 1)
- #define SCREEN_IS_TERMCAP(s) 1
- #define SCREEN_CURRENT_GLYPHS(s) current_glyphs
- #define SCREEN_DESIRED_GLYPHS(s) desired_glyphs
- #define SCREEN_TEMP_GLYPHS(s) temp_glyphs
- #define SCREEN_HEIGHT(s) screen_height
- #define SCREEN_WIDTH(s) screen_width
- #define SCREEN_NEW_HEIGHT(s) delayed_screen_height
- #define SCREEN_NEW_WIDTH(s) delayed_screen_width
- #define SCREEN_CURSOR_X(s) cursX
- #define SCREEN_CURSOR_Y(s) cursY
- #define SCREEN_VISIBLE_P(s) 1
- #define SCREEN_GARBAGED_P(s) screen_garbaged
- #define SCREEN_NO_SPLIT_P(s) 0
- #define SCREEN_WANTS_MODELINE_P(s) 1
- #define SCREEN_ICONIFIED_P(s) 0
- #define SCREEN_MINIBUF_WINDOW(s) minibuf_window
- #define SCREEN_ROOT_WINDOW(s) root_window
- #define SCREEN_SELECTED_WINDOW(s) selected_window
- #define SCREENP(s) 0
- #define SET_GLYPHS_SCREEN(glyphs,screen)
- #define SCREEN_INSERT_COST(screen) insert_line_cost
- #define SCREEN_DELETE_COST(screen) delete_line_cost
- #define SCREEN_INSERTN_COST(screen) insert_n_lines_cost
- #define SCREEN_DELETEN_COST(screen) delete_n_lines_cost
- #define SCREEN_MESSAGE_BUF(s) message_buf
-
- #define SCREEN_NORMAL_FACE(s) normal_face
- #define SCREEN_HIGHLIGHT_FACE(s) highlight_face
- #define SCREEN_MODELINE_FACE(s) modeline_face
- #define SCREEN_SELECTION_FACE(s) selection_face
- #define SCREEN_SECONDARY_SELECTION_FACE(s) secondary_selection_face
- #define SCREEN_OVERLAP_SELECTION_FACE(s) overlap_selection_face
-
- extern int screen_width, screen_height;
- extern int cursX, cursY;
-
- #endif /* emacs */
-
- #endif /* not MULTI_SCREEN */
-
- #ifdef emacs
-
- extern SCREEN_PTR choose_minibuf_screen ();
-
- extern int scroll_screen_lines (SCREEN_PTR, int, int, int);
- extern int update_screen (SCREEN_PTR, int, int);
- extern int scroll_cost (SCREEN_PTR, int, int, int);
- extern void do_line_insertion_deletion_costs (SCREEN_PTR,
- char *, char *,
- char *, char *,
- char *, char *,
- int);
- extern void get_screen_size (int *, int *);
-
- /* select_screen() and Fselect_screen() should only be called in response to
- user action, since we use the mouse_timestamp as the timestamp for a
- call to XSetInputFocus. select_screen_internal() changes selected_screen
- and runs some hooks, but does not set focus. It is appropriate to call
- in response to a FocusIn event.
-
- Fselect_screen() and select_screen() are the same (different typed args.)
- */
- extern void select_screen (struct screen *);
- extern void select_screen_internal (struct screen *);
-
- #endif /* emacs */
-
- #endif /* _EMACS_SCREEN_H_ */
-