/* Hooks by which low level terminal operations can be made to call other routines. Copyright (C) 1985, 1986, 1993, 1994, 2001, 2002, 2003, 2004, 2005, 2006, 2007 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, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ /* Miscellanea. */ struct glyph; struct frame; /* If nonzero, send all terminal output characters to this stream also. */ extern FILE *termscript; /* Only use prototypes when lisp.h has been included. */ #ifndef P_ #define P_(X) () #endif /* Text display hooks. */ extern void (*cursor_to_hook) P_ ((int vpos, int hpos)); extern void (*raw_cursor_to_hook) P_ ((int, int)); extern void (*clear_to_end_hook) P_ ((void)); extern void (*clear_frame_hook) P_ ((void)); extern void (*clear_end_of_line_hook) P_ ((int)); extern void (*ins_del_lines_hook) P_ ((int, int)); extern void (*insert_glyphs_hook) P_ ((struct glyph *s, int n)); extern void (*write_glyphs_hook) P_ ((struct glyph *s, int n)); extern void (*delete_glyphs_hook) P_ ((int)); extern void (*ring_bell_hook) P_ ((void)); extern void (*reset_terminal_modes_hook) P_ ((void)); extern void (*set_terminal_modes_hook) P_ ((void)); extern void (*update_begin_hook) P_ ((struct frame *)); extern void (*update_end_hook) P_ ((struct frame *)); extern void (*set_terminal_window_hook) P_ ((int)); /* Multi-frame and mouse support hooks. */ enum scroll_bar_part { scroll_bar_above_handle, scroll_bar_handle, scroll_bar_below_handle, scroll_bar_up_arrow, scroll_bar_down_arrow, scroll_bar_to_top, scroll_bar_to_bottom, scroll_bar_end_scroll, scroll_bar_move_ratio }; /* Return the current position of the mouse. Set *f to the frame the mouse is in, or zero if the mouse is in no Emacs frame. If it is set to zero, all the other arguments are garbage. If the motion started in a scroll bar, set *bar_window to the scroll bar's window, *part to the part the mouse is currently over, *x to the position of the mouse along the scroll bar, and *y to the overall length of the scroll bar. Otherwise, set *bar_window to Qnil, and *x and *y to the column and row of the character cell the mouse is over. Set *time to the time the mouse was at the returned position. This should clear mouse_moved until the next motion event arrives. */ extern void (*mouse_position_hook) P_ ((struct frame **f, int, Lisp_Object *bar_window, enum scroll_bar_part *part, Lisp_Object *x, Lisp_Object *y, unsigned long *time)); /* The window system handling code should set this if the mouse has moved since the last call to the mouse_position_hook. Calling that hook should clear this. */ extern int mouse_moved; /* When a frame's focus redirection is changed, this hook tells the window system code to re-decide where to put the highlight. Under X, this means that Emacs lies about where the focus is. */ extern void (*frame_rehighlight_hook) P_ ((struct frame *)); /* If we're displaying frames using a window system that can stack frames on top of each other, this hook allows you to bring a frame to the front, or bury it behind all the other windows. If this hook is zero, that means the device we're displaying on doesn't support overlapping frames, so there's no need to raise or lower anything. If RAISE is non-zero, F is brought to the front, before all other windows. If RAISE is zero, F is sent to the back, behind all other windows. */ extern void (*frame_raise_lower_hook) P_ ((struct frame *f, int raise)); /* If the value of the frame parameter changed, whis hook is called. For example, if going from fullscreen to not fullscreen this hook may do something OS dependent, like extended window manager hints on X11. */ extern void (*fullscreen_hook) P_ ((struct frame *f)); /* Scroll bar hooks. */ /* The representation of scroll bars is determined by the code which implements them, except for one thing: they must be represented by lisp objects. This allows us to place references to them in Lisp_Windows without worrying about those references becoming dangling references when the scroll bar is destroyed. The window-system-independent portion of Emacs just refers to scroll bars via their windows, and never looks inside the scroll bar representation; it always uses hook functions to do all the scroll bar manipulation it needs. The `vertical_scroll_bar' field of a Lisp_Window refers to that window's scroll bar, or is nil if the window doesn't have a scroll bar. The `scroll_bars' and `condemned_scroll_bars' fields of a Lisp_Frame are free for use by the scroll bar implementation in any way it sees fit. They are marked by the garbage collector. */ /* Set the vertical scroll bar for WINDOW to have its upper left corner at (TOP, LEFT), and be LENGTH rows high. Set its handle to indicate that we are displaying PORTION characters out of a total of WHOLE characters, starting at POSITION. If WINDOW doesn't yet have a scroll bar, create one for it. */ extern void (*set_vertical_scroll_bar_hook) P_ ((struct window *window, int portion, int whole, int position)); /* The following three hooks are used when we're doing a thorough redisplay of the frame. We don't explicitly know which scroll bars are going to be deleted, because keeping track of when windows go away is a real pain - can you say set-window-configuration? Instead, we just assert at the beginning of redisplay that *all* scroll bars are to be removed, and then save scroll bars from the fiery pit when we actually redisplay their window. */ /* Arrange for all scroll bars on FRAME to be removed at the next call to `*judge_scroll_bars_hook'. A scroll bar may be spared if `*redeem_scroll_bar_hook' is applied to its window before the judgement. This should be applied to each frame each time its window tree is redisplayed, even if it is not displaying scroll bars at the moment; if the HAS_SCROLL_BARS flag has just been turned off, only calling this and the judge_scroll_bars_hook will get rid of them. If non-zero, this hook should be safe to apply to any frame, whether or not it can support scroll bars, and whether or not it is currently displaying them. */ extern void (*condemn_scroll_bars_hook) P_ ((struct frame *frame)); /* Unmark WINDOW's scroll bar for deletion in this judgement cycle. Note that it's okay to redeem a scroll bar that is not condemned. */ extern void (*redeem_scroll_bar_hook) P_ ((struct window *window)); /* Remove all scroll bars on FRAME that haven't been saved since the last call to `*condemn_scroll_bars_hook'. This should be applied to each frame after each time its window tree is redisplayed, even if it is not displaying scroll bars at the moment; if the HAS_SCROLL_BARS flag has just been turned off, only calling this and condemn_scroll_bars_hook will get rid of them. If non-zero, this hook should be safe to apply to any frame, whether or not it can support scroll bars, and whether or not it is currently displaying them. */ extern void (*judge_scroll_bars_hook) P_ ((struct frame *FRAME)); /* Input queue declarations and hooks. */ /* Expedient hack: only provide the below definitions to files that are prepared to handle lispy things. CONSP is defined iff lisp.h has been included before this file. */ #ifdef CONSP enum event_kind { NO_EVENT, /* nothing happened. This should never actually appear in the event queue. */ ASCII_KEYSTROKE_EVENT, /* The ASCII code is in .code, perhaps with modifiers applied. .modifiers holds the state of the modifier keys. .frame_or_window is the frame in which the key was typed. .timestamp gives a timestamp (in milliseconds) for the keystroke. */ MULTIBYTE_CHAR_KEYSTROKE_EVENT, /* The multibyte char code is in .code, perhaps with modifiers applied. The others are the same as ASCII_KEYSTROKE_EVENT. */ NON_ASCII_KEYSTROKE_EVENT, /* .code is a number identifying the function key. A code N represents a key whose name is function_key_names[N]; function_key_names is a table in keyboard.c to which you should feel free to add missing keys. .modifiers holds the state of the modifier keys. .frame_or_window is the frame in which the key was typed. .timestamp gives a timestamp (in milliseconds) for the keystroke. */ TIMER_EVENT, /* A timer fired. */ MOUSE_CLICK_EVENT, /* The button number is in .code; it must be >= 0 and < NUM_MOUSE_BUTTONS, defined below. .modifiers holds the state of the modifier keys. .x and .y give the mouse position, in characters, within the window. .frame_or_window gives the frame the mouse click occurred in. .timestamp gives a timestamp (in milliseconds) for the click. */ WHEEL_EVENT, /* A wheel event is generated by a wheel on a mouse (e.g., MS Intellimouse). .modifiers holds the rotate direction (up or down), and the state of the modifier keys. .x and .y give the mouse position, in characters, within the window. .frame_or_window gives the frame the wheel event occurred in. .timestamp gives a timestamp (in milliseconds) for the event. */ #if defined (WINDOWSNT) || defined (MAC_OS) LANGUAGE_CHANGE_EVENT, /* A LANGUAGE_CHANGE_EVENT is generated on WINDOWSNT or Mac OS when the keyboard layout or input language is changed by the user. */ #endif SCROLL_BAR_CLICK_EVENT, /* .code gives the number of the mouse button that was clicked. .modifiers holds the state of the modifier keys. .part is a lisp symbol indicating which part of the scroll bar got clicked. .x gives the distance from the start of the scroll bar of the click; .y gives the total length of the scroll bar. .frame_or_window gives the window whose scroll bar was clicked in. .timestamp gives a timestamp (in milliseconds) for the click. */ #ifdef WINDOWSNT W32_SCROLL_BAR_CLICK_EVENT, /* as for SCROLL_BAR_CLICK, but only generated by MS-Windows scroll bar controls. */ #endif SELECTION_REQUEST_EVENT, /* Another X client wants a selection from us. See `struct selection_input_event'. */ SELECTION_CLEAR_EVENT, /* Another X client cleared our selection. */ BUFFER_SWITCH_EVENT, /* A process filter has switched buffers. */ DELETE_WINDOW_EVENT, /* An X client said "delete this window". */ MENU_BAR_EVENT, /* An event generated by the menu bar. The frame_or_window field's cdr holds the Lisp-level event value. (Only the toolkit version uses these.) */ ICONIFY_EVENT, /* An X client iconified this window. */ DEICONIFY_EVENT, /* An X client deiconified this window. */ MENU_BAR_ACTIVATE_EVENT, /* A button press in the menu bar (toolkit version only). */ DRAG_N_DROP_EVENT, /* A drag-n-drop event is generated when files selected outside of Emacs are dropped onto an Emacs window. .modifiers holds the state of the modifier keys. .x and .y give the mouse position, in characters, within the window. .frame_or_window is the frame in which the drop was made. .arg is a platform-dependent representation of the dropped items. .timestamp gives a timestamp (in milliseconds) for the click. */ USER_SIGNAL_EVENT, /* A user signal. code is a number identifying it, index into lispy_user_signals. */ /* Help events. Member `frame_or_window' of the input_event is the frame on which the event occurred, and member `arg' contains the help to show. */ HELP_EVENT, /* An event from a tool-bar. Member `arg' of the input event contains the tool-bar item selected. If `frame_or_window' and `arg' are equal, this is a prefix event. */ TOOL_BAR_EVENT, /* Queued from XTread_socket on FocusIn events. Translated into `switch-frame' events in kbd_buffer_get_event, if necessary. */ FOCUS_IN_EVENT, /* Generated when mouse moves over window not currently selected. */ SELECT_WINDOW_EVENT, /* Queued from XTread_socket when session manager sends save yourself before shutdown. */ SAVE_SESSION_EVENT, #ifdef MAC_OS /* Generated when an Apple event, a HICommand event, or a Services menu event is received and the corresponding handler is registered. Members `x' and `y' are for the event class and ID symbols, respectively. Member `arg' is a Lisp object converted from the received Apple event. Parameters for non-Apple events are converted to those in Apple events. */ MAC_APPLE_EVENT #endif }; /* If a struct input_event has a kind which is SELECTION_REQUEST_EVENT or SELECTION_CLEAR_EVENT, then its contents are really described by `struct selection_input_event'; see xterm.h. */ /* The keyboard input buffer is an array of these structures. Each one represents some sort of input event - a keystroke, a mouse click, or a window system event. These get turned into their lispy forms when they are removed from the event queue. */ struct input_event { /* What kind of event was this? */ enum event_kind kind; /* For an ASCII_KEYSTROKE_EVENT and MULTIBYTE_CHAR_KEYSTROKE_EVENT, this is the character. For a NON_ASCII_KEYSTROKE_EVENT, this is the keysym code. For a mouse event, this is the button number. */ /* In WindowsNT, for a mouse wheel event, this is the delta. */ int code; enum scroll_bar_part part; int modifiers; /* See enum below for interpretation. */ Lisp_Object x, y; unsigned long timestamp; /* This is padding just to put the frame_or_window field past the size of struct selection_input_event. */ int *padding[2]; /* This field is copied into a vector while the event is in the queue, so that garbage collections won't kill it. */ /* In a menu_bar_event, this is a cons cell whose car is the frame and whose cdr is the Lisp object that is the event's value. */ /* This field is last so that struct selection_input_event does not overlap with it. */ Lisp_Object frame_or_window; /* Additional event argument. This is used for TOOL_BAR_EVENTs and HELP_EVENTs and avoids calling Fcons during signal handling. */ Lisp_Object arg; }; #define EVENT_INIT(event) bzero (&(event), sizeof (struct input_event)) /* Called to read input events. */ extern int (*read_socket_hook) P_ ((int, int, struct input_event *)); /* Called when a frame's display becomes entirely up to date. */ extern void (*frame_up_to_date_hook) P_ ((struct frame *)); /* Bits in the modifiers member of the input_event structure. Note that reorder_modifiers assumes that the bits are in canonical order. The modifiers applied to mouse clicks are rather ornate. The window-system-specific code should store mouse clicks with up_modifier or down_modifier set. Having an explicit down modifier simplifies some of window-system-independent code; without it, the code would have to recognize down events by checking if the event is a mouse click lacking the click and drag modifiers. The window-system independent code turns all up_modifier events bits into drag_modifier, click_modifier, double_modifier, or triple_modifier events. The click_modifier has no written representation in the names of the symbols used as event heads, but it does appear in the Qevent_symbol_components property of the event heads. */ enum { up_modifier = 1, /* Only used on mouse buttons - always turned into a click or a drag modifier before lisp code sees the event. */ down_modifier = 2, /* Only used on mouse buttons. */ drag_modifier = 4, /* This is never used in the event queue; it's only used internally by the window-system-independent code. */ click_modifier= 8, /* See drag_modifier. */ double_modifier= 16, /* See drag_modifier. */ triple_modifier= 32, /* See drag_modifier. */ /* The next four modifier bits are used also in keyboard events at the Lisp level. It's probably not the greatest idea to use the 2^23 bit for any modifier. It may or may not be the sign bit, depending on VALBITS, so using it to represent a modifier key means that characters thus modified have different integer equivalents depending on the architecture they're running on. Oh, and applying XINT to a character whose 2^23 bit is set sign-extends it, so you get a bunch of bits in the mask you didn't want. The CHAR_ macros are defined in lisp.h. */ alt_modifier = CHAR_ALT, /* Under X, the XK_Alt_[LR] keysyms. */ super_modifier= CHAR_SUPER, /* Under X, the XK_Super_[LR] keysyms. */ hyper_modifier= CHAR_HYPER, /* Under X, the XK_Hyper_[LR] keysyms. */ shift_modifier= CHAR_SHIFT, ctrl_modifier = CHAR_CTL, meta_modifier = CHAR_META /* Under X, the XK_Meta_[LR] keysyms. */ }; #endif /* arch-tag: 33a00ecc-52b5-4186-a410-8801ac9f087d (do not change this comment) */