-/* Define screen-object for GNU Emacs.
- Copyright (C) 1988, 1992 Free Software Foundation, Inc.
+/* Don't multiply include: dispextern.h includes macterm.h which includes frame.h
+ some emacs source includes both dispextern.h and frame.h */
+#ifndef _XFRAME_H_
+#define _XFRAME_H_
+
+/* Define frame-object for GNU Emacs.
+ Copyright (C) 1993, 1994 Free Software Foundation, Inc.
This file is part of GNU Emacs.
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. */
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
+
+\f
+/* Miscellanea. */
+/* Nonzero means don't assume anything about current contents of
+ actual terminal frame */
-/* The structure representing a screen.
+extern int frame_garbaged;
- We declare this even if MULTI_SCREEN is not defined, because when
- we lack multi-screen support, we use one instance of this structure
- to represent the one screen we support. This is cleaner than
- having miscellaneous random variables scattered about. */
+/* Nonzero means FRAME_MESSAGE_BUF (selected_frame) is being used by
+ print. */
+
+extern int message_buf_print;
+
+\f
+/* The structure representing a frame. */
enum output_method
-{ output_termcap, output_x_window };
+{
+ output_termcap,
+ output_x_window,
+ output_msdos_raw,
+ output_w32,
+ output_mac
+};
+
+enum vertical_scroll_bar_type
+{
+ vertical_scroll_bar_none,
+ vertical_scroll_bar_left,
+ vertical_scroll_bar_right
+};
-struct screen
+struct frame
{
- int size;
+ EMACS_INT size;
struct Lisp_Vector *next;
- /* glyphs as they appear on the screen */
- struct screen_glyphs *current_glyphs;
+ /* All Lisp_Object components must come first.
+ Only EMACS_INT values can be intermixed with them.
+ That ensures they are all aligned normally. */
- /* glyphs we'd like to appear on the screen */
- struct screen_glyphs *desired_glyphs;
+ /* Name of this frame: a Lisp string. It is used for looking up resources,
+ as well as for the title in some cases. */
+ Lisp_Object name;
- /* See do_line_insertion_deletion_costs for info on these arrays. */
- /* 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;
+ /* The name to use for the icon, the last time
+ it was refreshed. nil means not explicitly specified. */
+ Lisp_Object icon_name;
+
+ /* This is the frame title specified explicitly, if any.
+ Usually it is nil. */
+ Lisp_Object title;
+
+ /* The frame which should receive keystrokes that occur in this
+ frame, or nil if they should go to the frame itself. This is
+ usually nil, but if the frame is minibufferless, we can use this
+ to redirect keystrokes to a surrogate minibuffer frame when
+ needed.
+
+ Note that a value of nil is different than having the field point
+ to the frame itself. Whenever the Fselect_frame function is used
+ to shift from one frame to the other, any redirections to the
+ original frame are shifted to the newly selected frame; if
+ focus_frame is nil, Fselect_frame will leave it alone. */
+ Lisp_Object focus_frame;
+
+ /* This frame's root window. Every frame has one.
+ If the frame has only a minibuffer window, this is it.
+ Otherwise, if the frame has a minibuffer window, this is its sibling. */
+ Lisp_Object root_window;
+
+ /* This frame's selected window.
+ Each frame has its own window hierarchy
+ and one of the windows in it is selected within the frame.
+ The selected window of the selected frame is Emacs's selected window. */
+ Lisp_Object selected_window;
- /* glyphs for the mode line */
- struct screen_glyphs *temp_glyphs;
+ /* This frame's minibuffer window.
+ Most frames have their own minibuffer windows,
+ but only the selected frame's minibuffer window
+ can actually appear to exist. */
+ Lisp_Object minibuffer_window;
- /* Intended cursor position of this screen.
- Measured in characters, counting from upper left corner
- within the screen. */
- int cursor_x;
- int cursor_y;
+ /* Parameter alist of this frame.
+ These are the parameters specified when creating the frame
+ or modified with modify-frame-parameters. */
+ Lisp_Object param_alist;
- /* Actual cursor position of this screen, and the character under it.
- (Not used for terminal screens.) */
- int phys_cursor_x;
- int phys_cursor_y;
- /* This is handy for undrawing the cursor, because current_glyphs is
- not always accurate when in do_scrolling. */
- GLYPH phys_cursor_glyph;
+ /* List of scroll bars on this frame.
+ Actually, we don't specify exactly what is stored here at all; the
+ scroll bar implementation code can use it to store anything it likes.
+ This field is marked by the garbage collector. It is here
+ instead of in the `display' structure so that the garbage
+ collector doesn't need to look inside the window-system-dependent
+ structure. */
+ Lisp_Object scroll_bars;
+ Lisp_Object condemned_scroll_bars;
- /* Size of this screen, in units of characters. */
- int height;
- int width;
+ /* Vector describing the items to display in the menu bar.
+ Each item has four elements in this vector.
+ They are KEY, STRING, SUBMAP, and HPOS.
+ (HPOS is not used in when the X toolkit is in use.)
+ There are four additional elements of nil at the end, to terminate. */
+ Lisp_Object menu_bar_items;
- /* New height and width for pending size change. 0 if no change pending. */
- int new_height, new_width;
+ /* Alist of elements (FACE-NAME . FACE-VECTOR-DATA). */
+ Lisp_Object face_alist;
- /* Name of this screen: a Lisp string. */
- Lisp_Object name;
+ /* A vector that records the entire structure of this frame's menu bar.
+ For the format of the data, see extensive comments in xmenu.c.
+ Only the X toolkit version uses this. */
+ Lisp_Object menu_bar_vector;
+ /* Number of elements in the vector that have meaningful data. */
+ EMACS_INT menu_bar_items_used;
- /* The screen which should recieve keystrokes that occur in this
- screen. This is usually the screen itself, but if the screen is
- minibufferless, this points to the minibuffer screen when it is
- active. */
- Lisp_Object focus_screen;
+ /* Predicate for selecting buffers for other-buffer. */
+ Lisp_Object buffer_predicate;
- /* 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;
+ /* List of buffers viewed in this frame, for other-buffer. */
+ Lisp_Object buffer_list;
- /* 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;
+ /* A dummy window used to display menu bars under X when no X
+ toolkit support is available. */
+ Lisp_Object menu_bar_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 window used to display the tool-bar of a frame. */
+ Lisp_Object tool_bar_window;
- /* Parameter alist of this screen.
- These are the parameters specified when creating the screen
- or modified with modify-screen-parameters. */
- Lisp_Object param_alist;
+ /* Desired and current tool-bar items. */
+ Lisp_Object desired_tool_bar_items, current_tool_bar_items;
+
+ /* Desired and current contents displayed in tool_bar_window. */
+ Lisp_Object desired_tool_bar_string, current_tool_bar_string;
+
+ /* beyond here, there should be no more Lisp_Object components. */
+
+ /* Cache of realized faces. */
+ struct face_cache *face_cache;
+
+ /* A buffer to hold the frame's name. We can't use the Lisp
+ string's pointer (`name', above) because it might get relocated. */
+ char *namebuf;
+
+ /* Glyph pool and matrix. */
+ struct glyph_pool *current_pool;
+ struct glyph_pool *desired_pool;
+ struct glyph_matrix *desired_matrix;
+ struct glyph_matrix *current_matrix;
+
+ /* 1 means that glyphs on this frame have been initialized so it can
+ be used for output. */
+ unsigned glyphs_initialized_p : 1;
+
+ /* Margin at the top of the frame. Used to display the tool-bar. */
+ int tool_bar_lines;
+
+ int n_desired_tool_bar_items;
+ int n_current_tool_bar_items;
+
+ /* A buffer for decode_mode_line. */
+ char *decode_mode_spec_buffer;
+
+ /* See do_line_insertion_deletion_costs for info on these arrays. */
+ /* Cost of inserting 1 line on this frame */
+ int *insert_line_cost;
+ /* Cost of deleting 1 line on this frame */
+ int *delete_line_cost;
+ /* Cost of inserting n lines on this frame */
+ int *insert_n_lines_cost;
+ /* Cost of deleting n lines on this frame */
+ int *delete_n_lines_cost;
- /* The output method says how the contents of this screen
+ /* Size of this frame, in units of characters. */
+ EMACS_INT height;
+ EMACS_INT width;
+ EMACS_INT window_width;
+ EMACS_INT window_height;
+
+ /* New height and width for pending size change. 0 if no change pending. */
+ int new_height, new_width;
+
+ /* The output method says how the contents of this frame
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;
+ struct x_output is used for X window frames;
+ it is defined in xterm.h.
+ struct w32_output is used for W32 window frames;
+ it is defined in w32term.h. */
+ union output_data
+ {
+ struct x_output *x;
+ struct w32_output *w32;
+ struct mac_output *mac;
+ int nothing;
+ }
+ output_data;
- /* Nonzero if last attempt at redisplay on this screen was preempted. */
- char display_preempted;
+#ifdef MULTI_KBOARD
+ /* A pointer to the kboard structure associated with this frame.
+ For termcap frames, this points to initial_kboard. For X frames,
+ it will be the same as display.x->display_info->kboard. */
+ struct kboard *kboard;
+#endif
- /* Nonzero if screen is currently displayed. */
- char visible;
+ /* Number of lines of menu bar. */
+ int menu_bar_lines;
- /* Nonzero if window is currently iconified.
- This and visible are mutually exclusive. */
- char iconified;
+#if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI)
+ /* Nonzero means using a menu bar that comes from the X toolkit. */
+ int external_menu_bar;
+#endif
+
+ /* Nonzero if last attempt at redisplay on this frame was preempted. */
+ char display_preempted;
- /* Nonzero if this screen should be redrawn. */
+ /* visible is nonzero if the frame is currently displayed; we check
+ it to see if we should bother updating the frame's contents.
+ DON'T SET IT DIRECTLY; instead, use FRAME_SET_VISIBLE.
+
+ Note that, since invisible frames aren't updated, whenever a
+ frame becomes visible again, it must be marked as garbaged. The
+ FRAME_SAMPLE_VISIBILITY macro takes care of this.
+
+ On Windows NT/9X, to avoid wasting effort updating visible frames
+ that are actually completely obscured by other windows on the
+ display, we bend the meaning of visible slightly: if greater than
+ 1, then the frame is obscured - we still consider it to be
+ "visible" as seen from lisp, but we don't bother updating it. We
+ must take care to garbage the frame when it ceaces to be obscured
+ though. Note that these semantics are only used on NT/9X.
+
+ iconified is nonzero if the frame is currently iconified.
+
+ Asynchronous input handlers should NOT change these directly;
+ instead, they should change async_visible or async_iconified, and
+ let the FRAME_SAMPLE_VISIBILITY macro set visible and iconified
+ at the next redisplay.
+
+ These should probably be considered read-only by everyone except
+ FRAME_SAMPLE_VISIBILITY.
+
+ These two are mutually exclusive. They might both be zero, if the
+ frame has been made invisible without an icon. */
+ char visible, iconified;
+
+ /* Asynchronous input handlers change these, and
+ FRAME_SAMPLE_VISIBILITY copies them into visible and iconified.
+ See FRAME_SAMPLE_VISIBILITY, below. */
+#ifdef __STDC__
+ volatile
+#endif
+ char async_visible, async_iconified;
+
+ /* Nonzero if this frame should be redrawn. */
+#ifdef __STDC__
+ volatile
+#endif
char garbaged;
- /* True if screen actually has a minibuffer window on it.
- 0 if using a minibuffer window that isn't on this screen. */
+ /* True if frame actually has a minibuffer window on it.
+ 0 if using a minibuffer window that isn't on this frame. */
char has_minibuffer;
- /* 0 means, if this screen has just one window,
+ /* 0 means, if this frame has just one window,
show no modeline for that window. */
char wants_modeline;
- /* Non-0 means raise this screen to the top of the heap when selected. */
+ /* Non-zero if the hardware device this frame is displaying on can
+ support scroll bars. */
+ char can_have_scroll_bars;
+
+ /* If can_have_scroll_bars is non-zero, this is non-zero if we should
+ actually display them on this frame. */
+ enum vertical_scroll_bar_type vertical_scroll_bar_type;
+
+ /* Non-0 means raise this frame to the top of the heap when selected. */
char auto_raise;
- /* Non-0 means lower this screen to the bottom of the stack when left. */
+ /* Non-0 means lower this frame to the bottom of the stack when left. */
char auto_lower;
- /* True if screen's root window can't be split. */
+ /* True if frame's root window can't be split. */
char no_split;
- /* Storage for messages to this screen. */
+ /* If this is set, then Emacs won't change the frame name to indicate
+ the current buffer, etcetera. If the user explicitly sets the frame
+ name, this gets set. If the user sets the name to Qnil, this is
+ cleared. */
+ char explicit_name;
+
+ /* Nonzero if size of some window on this frame has changed. */
+ char window_sizes_changed;
+
+ /* Storage for messages to this frame. */
char *message_buf;
/* Nonnegative if current redisplay should not do scroll computation
for lines beyond a certain vpos. This is the vpos. */
int scroll_bottom_vpos;
-};
-#ifdef MULTI_SCREEN
-
-typedef struct screen *SCREEN_PTR;
-
-#define XSCREEN(p) ((struct screen *) XPNTR (p))
-#define XSETSCREEN(p, v) ((struct screen *) XSETPNTR (p, v))
-
-#define WINDOW_SCREEN(w) (w)->screen
-
-#define SCREENP(s) (XTYPE(s) == Lisp_Screen)
-#define SCREEN_LIVE_P(s) ((s)->display.nothing != 0)
-#define SCREEN_IS_TERMCAP(s) ((s)->output_method == output_termcap)
-#define SCREEN_IS_X(s) ((s)->output_method == output_x_window)
-#define SCREEN_MINIBUF_ONLY_P(s) \
- EQ (SCREEN_ROOT_WINDOW (s), SCREEN_MINIBUF_WINDOW (s))
-#define SCREEN_HAS_MINIBUF(s) ((s)->has_minibuffer)
-#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 SET_SCREEN_GARBAGED(s) (screen_garbaged = 1, s->garbaged = 1)
-#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_SCROLL_BOTTOM_VPOS(s) (s)->scroll_bottom_vpos
-#define SCREEN_FOCUS_SCREEN(s) (s)->focus_screen
-
-#define CHECK_SCREEN(x, i) \
- { \
- if (! SCREENP (x)) \
- x = wrong_type_argument (Qscreenp, (x)); \
- }
+ /* Width of the scroll bar, in pixels and in characters.
+ scroll_bar_cols tracks scroll_bar_pixel_width if the latter is positive;
+ a zero value in scroll_bar_pixel_width means to compute the actual width
+ on the fly, using scroll_bar_cols and the current font width. */
+ int scroll_bar_pixel_width;
+ int scroll_bar_cols;
-#define CHECK_LIVE_SCREEN(x, i) \
- { \
- if (! SCREENP (x) \
- || ! SCREEN_LIVE_P (XSCREEN (x))) \
- x = wrong_type_argument (Qlive_screen_p, (x)); \
- }
+ /* Width of area for drawing truncation marks and overlay arrow. */
+ int trunc_area_pixel_width, trunc_area_cols;
+
+ /* The baud rate that was used to calculate costs for this frame. */
+ int cost_calculation_baud_rate;
+
+ /* A pointer to the data structure containing all information of
+ fontsets associated with this frame. See the comments in
+ fontset.h for more detail. */
+ struct fontset_data *fontset_data;
+
+ /* Nonzero if the mouse has moved on this display
+ since the last time we checked. */
+ char mouse_moved;
+
+ /* Exponent for gamma correction of colors. 1/(VIEWING_GAMMA *
+ SCREEN_GAMMA) where viewing_gamma is 0.4545 and SCREEN_GAMMA is a
+ frame parameter. 0 means don't do gamma correction. */
+ double gamma;
+};
-/* FOR_EACH_SCREEN (LIST_VAR, SCREEN_VAR) followed by a statement is a
- `for' loop which iterates over the elements of Vscreen_list. The
- loop will set SCREEN_VAR, a SCREEN_PTR, to each screen in
- Vscreen_list in succession and execute the statement. LIST_VAR
- should be a Lisp_Object; it is used to iterate through the
- Vscreen_list.
-
- If MULTI_SCREEN isn't defined, then this loop expands to something which
- executes the statement once. */
-#define FOR_EACH_SCREEN(list_var, screen_var) \
- for ((list_var) = Vscreen_list; \
+#ifdef MULTI_KBOARD
+#define FRAME_KBOARD(f) ((f)->kboard)
+#else
+#define FRAME_KBOARD(f) (&the_only_kboard)
+#endif
+
+typedef struct frame *FRAME_PTR;
+
+#define XFRAME(p) ((struct frame *) XPNTR (p))
+#define XSETFRAME(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_FRAME))
+
+/* Given a window, return its frame as a Lisp_Object. */
+#define WINDOW_FRAME(w) (w)->frame
+
+/* Test a frame for particular kinds of display methods. */
+#define FRAME_TERMCAP_P(f) ((f)->output_method == output_termcap)
+#define FRAME_X_P(f) ((f)->output_method == output_x_window)
+#define FRAME_W32_P(f) ((f)->output_method == output_w32)
+#define FRAME_MSDOS_P(f) ((f)->output_method == output_msdos_raw)
+#define FRAME_MAC_P(f) ((f)->output_method == output_mac)
+
+/* FRAME_WINDOW_P tests whether the frame is a window, and is
+ defined to be the predicate for the window system being used. */
+
+#ifdef HAVE_X_WINDOWS
+#define FRAME_WINDOW_P(f) FRAME_X_P (f)
+#endif
+#ifdef HAVE_NTGUI
+#define FRAME_WINDOW_P(f) FRAME_W32_P (f)
+#endif
+#ifdef macintosh
+#define FRAME_WINDOW_P(f) FRAME_MAC_P (f)
+#endif
+#ifndef FRAME_WINDOW_P
+#define FRAME_WINDOW_P(f) (0)
+#endif
+
+/* Nonzero if frame F is still alive (not deleted). */
+#define FRAME_LIVE_P(f) ((f)->output_data.nothing != 0)
+
+/* Nonzero if frame F is a minibuffer-only frame. */
+#define FRAME_MINIBUF_ONLY_P(f) \
+ EQ (FRAME_ROOT_WINDOW (f), FRAME_MINIBUF_WINDOW (f))
+
+/* Nonzero if frame F contains a minibuffer window.
+ (If this is 0, F must use some other minibuffer window.) */
+#define FRAME_HAS_MINIBUF_P(f) ((f)->has_minibuffer)
+#define FRAME_HEIGHT(f) (f)->height
+
+/* Width of frame F, measured in character columns,
+ not including scroll bars if any. */
+#define FRAME_WIDTH(f) (f)->width
+
+/* Number of lines of frame F used for menu bar.
+ This is relevant on terminal frames and on
+ X Windows when not using the X toolkit.
+ These lines are counted in FRAME_HEIGHT. */
+#define FRAME_MENU_BAR_LINES(f) (f)->menu_bar_lines
+
+/* Number of lines of frame F used for the tool-bar. */
+
+#define FRAME_TOOL_BAR_LINES(f) (f)->tool_bar_lines
+
+/* Lines above the top-most window in frame F. */
+
+#define FRAME_TOP_MARGIN(F) \
+ (FRAME_MENU_BAR_LINES (F) + FRAME_TOOL_BAR_LINES (F))
+
+/* Nonzero if this frame should display a menu bar
+ in a way that does not use any text lines. */
+#if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI)
+#define FRAME_EXTERNAL_MENU_BAR(f) (f)->external_menu_bar
+#else
+#define FRAME_EXTERNAL_MENU_BAR(f) 0
+#endif
+#define FRAME_VISIBLE_P(f) ((f)->visible != 0)
+
+/* Nonzero if frame F is currently visible but hidden. */
+#define FRAME_OBSCURED_P(f) ((f)->visible > 1)
+
+/* Nonzero if frame F is currently iconified. */
+#define FRAME_ICONIFIED_P(f) (f)->iconified
+
+#define FRAME_SET_VISIBLE(f,p) \
+ ((f)->async_visible = (p), FRAME_SAMPLE_VISIBILITY (f))
+#define SET_FRAME_GARBAGED(f) (frame_garbaged = 1, f->garbaged = 1)
+#define FRAME_GARBAGED_P(f) (f)->garbaged
+
+/* Nonzero means do not allow splitting this frame's window. */
+#define FRAME_NO_SPLIT_P(f) (f)->no_split
+
+/* Not really implemented. */
+#define FRAME_WANTS_MODELINE_P(f) (f)->wants_modeline
+
+/* Nonzero if a size change has been requested for frame F
+ but not yet really put into effect. This can be true temporarily
+ when an X event comes in at a bad time. */
+#define FRAME_WINDOW_SIZES_CHANGED(f) (f)->window_sizes_changed
+/* When a size change is pending, these are the requested new sizes. */
+#define FRAME_NEW_HEIGHT(f) (f)->new_height
+#define FRAME_NEW_WIDTH(f) (f)->new_width
+
+/* The minibuffer window of frame F, if it has one; otherwise nil. */
+#define FRAME_MINIBUF_WINDOW(f) (f)->minibuffer_window
+
+/* The root window of the window tree of frame F. */
+#define FRAME_ROOT_WINDOW(f) (f)->root_window
+
+/* The currently selected window of the window tree of frame F. */
+#define FRAME_SELECTED_WINDOW(f) (f)->selected_window
+
+#define FRAME_INSERT_COST(f) (f)->insert_line_cost
+#define FRAME_DELETE_COST(f) (f)->delete_line_cost
+#define FRAME_INSERTN_COST(f) (f)->insert_n_lines_cost
+#define FRAME_DELETEN_COST(f) (f)->delete_n_lines_cost
+#define FRAME_MESSAGE_BUF(f) (f)->message_buf
+#define FRAME_SCROLL_BOTTOM_VPOS(f) (f)->scroll_bottom_vpos
+#define FRAME_FOCUS_FRAME(f) (f)->focus_frame
+
+/* Nonzero if frame F supports scroll bars.
+ If this is zero, then it is impossible to enable scroll bars
+ on frame F. */
+#define FRAME_CAN_HAVE_SCROLL_BARS(f) ((f)->can_have_scroll_bars)
+
+/* This frame slot says whether scroll bars are currently enabled for frame F,
+ and which side they are on. */
+#define FRAME_VERTICAL_SCROLL_BAR_TYPE(f) ((f)->vertical_scroll_bar_type)
+#define FRAME_HAS_VERTICAL_SCROLL_BARS(f) \
+ ((f)->vertical_scroll_bar_type != vertical_scroll_bar_none)
+#define FRAME_HAS_VERTICAL_SCROLL_BARS_ON_LEFT(f) \
+ ((f)->vertical_scroll_bar_type == vertical_scroll_bar_left)
+#define FRAME_HAS_VERTICAL_SCROLL_BARS_ON_RIGHT(f) \
+ ((f)->vertical_scroll_bar_type == vertical_scroll_bar_right)
+
+/* Width that a scroll bar in frame F should have, if there is one.
+ Measured in pixels.
+ If scroll bars are turned off, this is still nonzero. */
+#define FRAME_SCROLL_BAR_PIXEL_WIDTH(f) ((f)->scroll_bar_pixel_width)
+
+/* Width that a scroll bar in frame F should have, if there is one.
+ Measured in columns (characters).
+ If scroll bars are turned off, this is still nonzero. */
+#define FRAME_SCROLL_BAR_COLS(f) ((f)->scroll_bar_cols)
+
+/* Width of a scroll bar in frame F, measured in columns (characters),
+ but only if scroll bars are on the left.
+ If scroll bars are on the right in this frame, it is 0. */
+#define FRAME_LEFT_SCROLL_BAR_WIDTH(f) \
+ (FRAME_HAS_VERTICAL_SCROLL_BARS_ON_LEFT (f) \
+ ? FRAME_SCROLL_BAR_COLS (f) \
+ : 0)
+
+/* Width of a scroll bar in frame F, measured in columns (characters). */
+#define FRAME_SCROLL_BAR_WIDTH(f) \
+ (FRAME_HAS_VERTICAL_SCROLL_BARS (f) \
+ ? FRAME_SCROLL_BAR_COLS (f) \
+ : 0)
+
+/* Total width of frame F, in columns (characters),
+ including the width used by scroll bars if any. */
+#define FRAME_WINDOW_WIDTH(f) ((f)->window_width)
+
+/* Set the width of frame F to VAL.
+ VAL is the width of a full-frame window,
+ not including scroll bars. */
+#define SET_FRAME_WIDTH(f, val) \
+ ((f)->width = (val), \
+ (f)->window_width = FRAME_WINDOW_WIDTH_ARG (f, (f)->width))
+
+/* Given a value WIDTH for frame F's nominal width,
+ return the value that FRAME_WINDOW_WIDTH should have. */
+#define FRAME_WINDOW_WIDTH_ARG(f, width) \
+ ((width) \
+ + FRAME_SCROLL_BAR_WIDTH (f) \
+ + FRAME_FLAGS_AREA_COLS (f))
+
+/* Maximum + 1 legitimate value for FRAME_CURSOR_X. */
+#define FRAME_CURSOR_X_LIMIT(f) \
+ (FRAME_WIDTH (f) + FRAME_LEFT_SCROLL_BAR_WIDTH (f))
+
+/* Nonzero if frame F has scroll bars. */
+#define FRAME_SCROLL_BARS(f) ((f)->scroll_bars)
+
+#define FRAME_CONDEMNED_SCROLL_BARS(f) ((f)->condemned_scroll_bars)
+#define FRAME_MENU_BAR_ITEMS(f) ((f)->menu_bar_items)
+#define FRAME_COST_BAUD_RATE(f) ((f)->cost_calculation_baud_rate)
+#define FRAME_FONTSET_DATA(f) ((f)->fontset_data)
+
+/* Return a pointer to the face cache of frame F. */
+
+#define FRAME_FACE_CACHE(F) (F)->face_cache
+
+/* Return the size of message_buf of the frame F. We multiply the
+ width of the frame by 4 because multi-byte form may require at most
+ 4-byte for a character. */
+
+#define FRAME_MESSAGE_BUF_SIZE(f) (((int) (f)->width) * 4)
+
+/* Emacs's redisplay code could become confused if a frame's
+ visibility changes at arbitrary times. For example, if a frame is
+ visible while the desired glyphs are being built, but becomes
+ invisible before they are updated, then some rows of the
+ desired_glyphs will be left marked as enabled after redisplay is
+ complete, which should never happen. The next time the frame
+ becomes visible, redisplay will probably barf.
+
+ Currently, there are no similar situations involving iconified, but
+ the principle is the same.
+
+ So instead of having asynchronous input handlers directly set and
+ clear the frame's visibility and iconification flags, they just set
+ the async_visible and async_iconified flags; the redisplay code
+ calls the FRAME_SAMPLE_VISIBILITY macro before doing any redisplay,
+ which sets visible and iconified from their asynchronous
+ counterparts.
+
+ Synchronous code must use the FRAME_SET_VISIBLE macro.
+
+ Also, if a frame used to be invisible, but has just become visible,
+ it must be marked as garbaged, since redisplay hasn't been keeping
+ up its contents. */
+
+#define FRAME_SAMPLE_VISIBILITY(f) \
+ (((f)->async_visible && (f)->visible != (f)->async_visible) ? \
+ SET_FRAME_GARBAGED (f) : 0, \
+ (f)->visible = (f)->async_visible, \
+ (f)->iconified = (f)->async_iconified)
+
+#define CHECK_FRAME(x, i) \
+ do { \
+ if (! FRAMEP (x)) \
+ x = wrong_type_argument (Qframep, (x)); \
+ } while (0)
+
+#define CHECK_LIVE_FRAME(x, i) \
+ do { \
+ if (! FRAMEP (x) \
+ || ! FRAME_LIVE_P (XFRAME (x))) \
+ x = wrong_type_argument (Qframe_live_p, (x)); \
+ } while (0)
+
+/* FOR_EACH_FRAME (LIST_VAR, FRAME_VAR) followed by a statement is a
+ `for' loop which iterates over the elements of Vframe_list. The
+ loop will set FRAME_VAR, a Lisp_Object, to each frame in
+ Vframe_list in succession and execute the statement. LIST_VAR
+ should be a Lisp_Object too; it is used to iterate through the
+ Vframe_list.
+
+ This macro is a holdover from a time when multiple frames weren't always
+ supported. An alternate definition of the macro would expand to
+ something which executes the statement once. */
+
+#define FOR_EACH_FRAME(list_var, frame_var) \
+ for ((list_var) = Vframe_list; \
(CONSP (list_var) \
- && (screen_var = XSCREEN (XCONS (list_var)->car), 1)); \
- list_var = XCONS (list_var)->cdr)
+ && (frame_var = XCAR (list_var), 1)); \
+ list_var = XCDR (list_var))
-extern Lisp_Object Qscreenp, Qlive_screen_p;
+extern Lisp_Object Qframep, Qframe_live_p, Qicon;
-extern struct screen *selected_screen;
-extern struct screen *last_nonminibuf_screen;
+extern struct frame *last_nonminibuf_frame;
-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 struct frame *make_terminal_frame P_ ((void));
+extern struct frame *make_frame P_ ((int));
+#ifdef HAVE_WINDOW_SYSTEM
+extern struct frame *make_minibuffer_frame P_ ((void));
+extern struct frame *make_frame_without_minibuffer P_ ((Lisp_Object,
+ struct kboard *,
+ Lisp_Object));
+#endif /* HAVE_WINDOW_SYSTEM */
+extern int other_visible_frames P_ ((struct frame *));
-/* Nonzero means SCREEN_MESSAGE_BUF (selected_screen) is being used by
- print. */
-extern int message_buf_print;
+extern Lisp_Object Vframe_list;
+extern Lisp_Object Vdefault_frame_alist;
+
+extern Lisp_Object Vterminal_frame;
+\f
+/* Device-independent scroll bar stuff. */
+
+/* Return the starting column (zero-based) of the vertical scroll bar
+ for window W. The column before this one is the last column we can
+ use for text. If the window touches the right edge of the frame,
+ we have extra space allocated for it. Otherwise, the scroll bar
+ takes over the window's rightmost columns. */
+
+#define WINDOW_VERTICAL_SCROLL_BAR_COLUMN(w) \
+ (FRAME_HAS_VERTICAL_SCROLL_BARS_ON_RIGHT (XFRAME (WINDOW_FRAME (w))) ? \
+ (((XINT ((w)->left) + XINT ((w)->width)) \
+ < FRAME_WIDTH (XFRAME (WINDOW_FRAME (w)))) \
+ ? (XINT ((w)->left) + XINT ((w)->width) \
+ - FRAME_SCROLL_BAR_COLS (XFRAME (WINDOW_FRAME (w)))) \
+ : FRAME_WIDTH (XFRAME (WINDOW_FRAME (w)))) \
+ : XINT ((w)->left))
+
+/* Return the height in lines of the vertical scroll bar in w. If the
+ window has a mode line, don't make the scroll bar extend that far. */
+
+#define WINDOW_VERTICAL_SCROLL_BAR_HEIGHT(w) (window_internal_height (w))
+
+/* The currently selected frame. */
+
+extern Lisp_Object selected_frame;
+
+/* Value is a pointer to the selected frame. If the selected frame
+ isn't life, abort. */
-extern Lisp_Object Vscreen_list;
-extern Lisp_Object Vdefault_screen_alist;
+#define SELECTED_FRAME() \
+ ((FRAMEP (selected_frame) \
+ && FRAME_LIVE_P (XFRAME (selected_frame))) \
+ ? XFRAME (selected_frame) \
+ : (struct frame *) (abort (), 0))
-extern Lisp_Object Vterminal_screen;
\f
-#else /* not MULTI_SCREEN */
+/***********************************************************************
+ Display-related Macros
+ ***********************************************************************/
-/* These definitions are used in a single-screen version of Emacs. */
+/* Canonical y-unit on frame F. This value currently equals the line
+ height of the frame. Terminal specific header files are expected
+ to define the macro FRAME_LINE_HEIGHT. */
-#define SCREEN_PTR int
+#define CANON_Y_UNIT(F) \
+ (FRAME_WINDOW_P (F) ? FRAME_LINE_HEIGHT (F) : 1)
-extern struct screen the_only_screen;
+/* Canonical x-unit on frame F. This is currently equal to the width
+ of the default font of F. Terminal specific headers are expected
+ to define the macro FRAME_DEFAULT_FONT_WIDTH. */
-extern int selected_screen;
-extern int last_nonminibuf_screen;
+#define CANON_X_UNIT(F) \
+ (FRAME_WINDOW_P (F) ? FRAME_DEFAULT_FONT_WIDTH (F) : 1)
+
+/* Pixel width of areas used to display truncation marks, continuation
+ marks, overlay arrows. This is 0 for terminal frames. */
+
+#ifdef HAVE_WINDOW_SYSTEM
+#define FRAME_FLAGS_AREA_COLS(F) \
+ (FRAME_WINDOW_P ((F)) ? FRAME_X_FLAGS_AREA_COLS ((F)) : 0)
+#define FRAME_FLAGS_AREA_WIDTH(F) FRAME_X_FLAGS_AREA_WIDTH (F)
+#define FRAME_LEFT_FLAGS_AREA_WIDTH(F) FRAME_X_LEFT_FLAGS_AREA_WIDTH (F)
+
+#else
+#define FRAME_FLAGS_AREA_WIDTH(F) 0
+#define FRAME_FLAGS_AREA_COLS(F) 0
+#define FRAME_LEFT_FLAGS_AREA_WIDTH(F) 0
+#endif
+
-/* Nonzero means SCREEN_MESSAGE_BUF (selected_screen) is being used by
- print. */
-extern int message_buf_print;
-#define XSCREEN(s) selected_screen
-#define WINDOW_SCREEN(w) selected_screen
-
-#define SCREENP(s) (XTYPE(s) == Lisp_Screen)
-#define SCREEN_LIVE_P(s) 1
-#define SCREEN_IS_TERMCAP(s) 1
-#define SCREEN_IS_X(s) 0
-#define SCREEN_MINIBUF_ONLY_P(s) 0
-#define SCREEN_HAS_MINIBUF(s) 1
-#define SCREEN_CURRENT_GLYPHS(s) the_only_screen.current_glyphs
-#define SCREEN_DESIRED_GLYPHS(s) the_only_screen.desired_glyphs
-#define SCREEN_TEMP_GLYPHS(s) the_only_screen.temp_glyphs
-#define SCREEN_HEIGHT(s) the_only_screen.height
-#define SCREEN_WIDTH(s) the_only_screen.width
-#define SCREEN_NEW_HEIGHT(s) the_only_screen.new_height
-#define SCREEN_NEW_WIDTH(s) the_only_screen.new_width
-#define SCREEN_CURSOR_X(s) the_only_screen.cursor_x
-#define SCREEN_CURSOR_Y(s) the_only_screen.cursor_y
-#define SCREEN_VISIBLE_P(s) 1
-#define SET_SCREEN_GARBAGED(s) (screen_garbaged = 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) the_only_screen.root_window
-#define SCREEN_SELECTED_WINDOW(s) selected_window
-#define SET_GLYPHS_SCREEN(glyphs,screen)
-#define SCREEN_INSERT_COST(screen) the_only_screen.insert_line_cost
-#define SCREEN_DELETE_COST(screen) the_only_screen.delete_line_cost
-#define SCREEN_INSERTN_COST(screen) the_only_screen.insert_n_lines_cost
-#define SCREEN_DELETEN_COST(screen) the_only_screen.delete_n_lines_cost
-#define SCREEN_MESSAGE_BUF(s) the_only_screen.message_buf
-#define SCREEN_SCROLL_BOTTOM_VPOS(s) the_only_screen.scroll_bottom_vpos
-#define SCREEN_FOCUS_SCREEN(s) 0
-
-#define CHECK_SCREEN(x, i) { ; }
-#define CHECK_LIVE_SCREEN(x, y) { ; }
-
-/* FOR_EACH_SCREEN (LIST_VAR, SCREEN_VAR) followed by a statement is a
- `for' loop which iterates over the elements of Vscreen_list. The
- loop will set SCREEN_VAR, a SCREEN_PTR, to each screen in
- Vscreen_list in succession and execute the statement. LIST_VAR
- should be a Lisp_Object; it is used to iterate through the
- Vscreen_list.
-
- If MULTI_SCREEN _is_ defined, then this loop expands to a real
- `for' loop which traverses Vscreen_list using LIST_VAR and
- SCREEN_VAR. */
-#define FOR_EACH_SCREEN(list_var, screen_var) \
- for (screen_var = (SCREEN_PTR) 1; screen_var; screen_var = (SCREEN_PTR) 0)
-
-#endif /* not MULTI_SCREEN */
+\f
+/***********************************************************************
+ Conversion between canonical units and pixels
+ ***********************************************************************/
+
+/* Canonical x-values are fractions of CANON_X_UNIT, canonical y-unit
+ are fractions of CANON_Y_UNIT of a frame. Both are represented as
+ Lisp numbers, i.e. integers or floats. */
+
+/* Convert canonical value X to pixels. F is the frame whose
+ canonical char width is to be used. X must be a Lisp integer or
+ float. Value is a C integer. */
+
+#define PIXEL_X_FROM_CANON_X(F, X) \
+ (INTEGERP (X) \
+ ? XINT (X) * CANON_X_UNIT (F) \
+ : (int) (XFLOAT_DATA (X) * CANON_X_UNIT (F)))
+
+/* Convert canonical value Y to pixels. F is the frame whose
+ canonical character height is to be used. X must be a Lisp integer
+ or float. Value is a C integer. */
+
+#define PIXEL_Y_FROM_CANON_Y(F, Y) \
+ (INTEGERP (Y) \
+ ? XINT (Y) * CANON_Y_UNIT (F) \
+ : (int) (XFLOAT_DATA (Y) * CANON_Y_UNIT (F)))
+
+/* Convert pixel-value X to canonical units. F is the frame whose
+ canonical character width is to be used. X is a C integer. Result
+ is a Lisp float if X is not a multiple of the canon width,
+ otherwise it's a Lisp integer. */
+
+#define CANON_X_FROM_PIXEL_X(F, X) \
+ ((X) % CANON_X_UNIT (F) != 0 \
+ ? make_float ((double) (X) / CANON_X_UNIT (F)) \
+ : make_number ((X) / CANON_X_UNIT (F)))
+
+/* Convert pixel-value Y to canonical units. F is the frame whose
+ canonical character height is to be used. Y is a C integer.
+ Result is a Lisp float if Y is not a multiple of the canon width,
+ otherwise it's a Lisp integer. */
+
+#define CANON_Y_FROM_PIXEL_Y(F, Y) \
+ ((Y) % CANON_Y_UNIT (F) \
+ ? make_float ((double) (Y) / CANON_Y_UNIT (F)) \
+ : make_number ((Y) / CANON_Y_UNIT (F)))
+
+#endif /* not defined _FRAME_H_ */