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More implementation details.

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This commit is contained in:
William McBrine
2007-03-12 06:43:18 +00:00
parent 1097c8c646
commit ff7e5dba2b
1 changed files with 35 additions and 1 deletions
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36
IMPLEMNT
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@@ -136,7 +136,7 @@ here. Returns OK or ERR, which is passed on by the caller.
int PDC_mouse_set(void);
Called by mouse_set(), mouse_on(), and mouse_off() -- all the functions
that modifiy SP->_trap_mbe. If your platform needs to do anything in
that modify SP->_trap_mbe. If your platform needs to do anything in
response to a change in SP->_trap_mbe (for example, turning the mouse
cursor on or off), do it here. Returns OK or ERR, which is passed on by
the caller.
@@ -169,8 +169,16 @@ except checking for values out of range.
void PDC_reset_prog_mode(void);
The non-portable functionality of reset_prog_mode() is handled here --
whatever's not done in _restore_mode(). In current ports: In OS/2, this
sets the keyboard to binary mode; in Win32, it enables or disables the
mouse pointer to match the saved mode; in others it does nothing.
void PDC_reset_shell_mode(void);
The same thing, for reset_shell_mode(). In OS/2 and Win32, it restores
the default console mode; in others it does nothing.
int PDC_resize_screen(int nlines, int ncols);
This does the main work of resize_term(). It may respond to non-zero
@@ -182,10 +190,22 @@ action for the platform.
void PDC_restore_screen_mode(int i);
Called from _restore_mode() in kernel.c, this function does the actual
mode changing, if applicable. Currently used only in DOS and OS/2.
void PDC_save_screen_mode(int i);
Called from _save_mode() in kernel.c, this function saves the actual
screen mode, if applicable. Currently used only in DOS and OS/2.
void PDC_scr_close(void);
The platform-specific part of endwin(). It may restore the image of the
original screen saved by PDC_scr_open(), if the PDC_RESTORE_SCREEN
environment variable is set; either way, if using an existing terminal,
this function should restore it to the mode it had at startup, and move
the cursor to the lower left corner. (The X11 port does nothing.)
void PDC_scr_free(void);
Frees the memory for SP and pdc_atrtab allocated by PDC_scr_open().
@@ -193,6 +213,20 @@ Called by delscreen().
int PDC_scr_open(int argc, char **argv);
The platform-specific part of initscr(). It's actually called from
Xinitscr(); the arguments, if present, correspond to those used with
main(), and may be used to set the title of the terminal window, or for
other, platform-specific purposes. (The arguments are currently used
only in X11.) PDC_scr_open() must allocate memory for SP and pdc_atrtab,
and must initialize acs_map[] (unless it's preset) and several members
of SP, including lines, cols, mouse_wait, orig_attr (and if orig_attr is
TRUE, orig_fore and orig_back), mono, _restore and _preserve. (Although
SP and pdc_atrtab are used the same way in all ports, they're allocated
here in order to allow the X11 port to map them to a block of shared
memory.) If using an existing terminal, and the environment variable
PDC_RESTORE_SCREEN is set, this function may also store the existing
screen image for later restoration by PDC_scr_close().
pdcsetsc.c:
-----------