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gui.c
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gui.c
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/* vi:set ts=8 sts=4 sw=4:
*
* VIM - Vi IMproved by Bram Moolenaar
* GUI/Motif support by Robert Webb
*
* Do ":help uganda" in Vim to read copying and usage conditions.
* Do ":help credits" in Vim to see a list of people who contributed.
* See README.txt for an overview of the Vim source code.
*/
#include "vim.h"
/* Structure containing all the GUI information */
gui_T gui;
#if defined(FEAT_MBYTE) && !defined(FEAT_GUI_GTK)
static void set_guifontwide(char_u *font_name);
#endif
static void gui_check_pos(void);
static void gui_position_components(int);
static void gui_outstr(char_u *, int);
static int gui_screenchar(int off, int flags, guicolor_T fg, guicolor_T bg, int back);
#ifdef FEAT_GUI_GTK
static int gui_screenstr(int off, int len, int flags, guicolor_T fg, guicolor_T bg, int back);
#endif
static void gui_delete_lines(int row, int count);
static void gui_insert_lines(int row, int count);
static void fill_mouse_coord(char_u *p, int col, int row);
#if defined(FEAT_GUI_TABLINE) || defined(PROTO)
static int gui_has_tabline(void);
#endif
static void gui_do_scrollbar(win_T *wp, int which, int enable);
static colnr_T scroll_line_len(linenr_T lnum);
static linenr_T gui_find_longest_lnum(void);
static void gui_update_horiz_scrollbar(int);
static void gui_set_fg_color(char_u *name);
static void gui_set_bg_color(char_u *name);
static win_T *xy2win(int x, int y);
#if defined(UNIX) && !defined(MACOS_X) && !defined(__APPLE__)
# define MAY_FORK
static void gui_do_fork(void);
static int gui_read_child_pipe(int fd);
/* Return values for gui_read_child_pipe */
enum {
GUI_CHILD_IO_ERROR,
GUI_CHILD_OK,
GUI_CHILD_FAILED
};
#endif /* MAY_FORK */
static void gui_attempt_start(void);
static int can_update_cursor = TRUE; /* can display the cursor */
/*
* The Athena scrollbars can move the thumb to after the end of the scrollbar,
* this makes the thumb indicate the part of the text that is shown. Motif
* can't do this.
*/
#if defined(FEAT_GUI_ATHENA) || defined(FEAT_GUI_MAC)
# define SCROLL_PAST_END
#endif
/*
* gui_start -- Called when user wants to start the GUI.
*
* Careful: This function can be called recursively when there is a ":gui"
* command in the .gvimrc file. Only the first call should fork, not the
* recursive call.
*/
void
gui_start(void)
{
char_u *old_term;
static int recursive = 0;
old_term = vim_strsave(T_NAME);
settmode(TMODE_COOK); /* stop RAW mode */
if (full_screen)
cursor_on(); /* needed for ":gui" in .vimrc */
full_screen = FALSE;
++recursive;
#ifdef MAY_FORK
/*
* Quit the current process and continue in the child.
* Makes "gvim file" disconnect from the shell it was started in.
* Don't do this when Vim was started with "-f" or the 'f' flag is present
* in 'guioptions'.
*/
if (gui.dofork && !vim_strchr(p_go, GO_FORG) && recursive <= 1)
{
gui_do_fork();
}
else
#endif
{
#ifdef FEAT_GUI_GTK
/* If there is 'f' in 'guioptions' and specify -g argument,
* gui_mch_init_check() was not called yet. */
if (gui_mch_init_check() != OK)
getout_preserve_modified(1);
#endif
gui_attempt_start();
}
if (!gui.in_use) /* failed to start GUI */
{
/* Back to old term settings
*
* FIXME: If we got here because a child process failed and flagged to
* the parent to resume, and X11 is enabled with FEAT_TITLE, this will
* hit an X11 I/O error and do a longjmp(), leaving recursive
* permanently set to 1. This is probably not as big a problem as it
* sounds, because gui_mch_init() in both gui_x11.c and gui_gtk_x11.c
* return "OK" unconditionally, so it would be very difficult to
* actually hit this case.
*/
termcapinit(old_term);
settmode(TMODE_RAW); /* restart RAW mode */
#ifdef FEAT_TITLE
set_title_defaults(); /* set 'title' and 'icon' again */
#endif
}
vim_free(old_term);
#ifdef FEAT_AUTOCMD
/* If the GUI started successfully, trigger the GUIEnter event, otherwise
* the GUIFailed event. */
gui_mch_update();
apply_autocmds(gui.in_use ? EVENT_GUIENTER : EVENT_GUIFAILED,
NULL, NULL, FALSE, curbuf);
#endif
--recursive;
}
/*
* Set_termname() will call gui_init() to start the GUI.
* Set the "starting" flag, to indicate that the GUI will start.
*
* We don't want to open the GUI shell until after we've read .gvimrc,
* otherwise we don't know what font we will use, and hence we don't know
* what size the shell should be. So if there are errors in the .gvimrc
* file, they will have to go to the terminal: Set full_screen to FALSE.
* full_screen will be set to TRUE again by a successful termcapinit().
*/
static void
gui_attempt_start(void)
{
static int recursive = 0;
++recursive;
gui.starting = TRUE;
#ifdef FEAT_GUI_GTK
gui.event_time = GDK_CURRENT_TIME;
#endif
termcapinit((char_u *)"builtin_gui");
gui.starting = recursive - 1;
#if defined(FEAT_GUI_GTK) || defined(FEAT_GUI_X11)
if (gui.in_use)
{
# ifdef FEAT_EVAL
Window x11_window;
Display *x11_display;
if (gui_get_x11_windis(&x11_window, &x11_display) == OK)
set_vim_var_nr(VV_WINDOWID, (long)x11_window);
# endif
/* Display error messages in a dialog now. */
display_errors();
}
#endif
--recursive;
}
#ifdef MAY_FORK
/* for waitpid() */
# if defined(HAVE_SYS_WAIT_H) || defined(HAVE_UNION_WAIT)
# include <sys/wait.h>
# endif
/*
* Create a new process, by forking. In the child, start the GUI, and in
* the parent, exit.
*
* If something goes wrong, this will return with gui.in_use still set
* to FALSE, in which case the caller should continue execution without
* the GUI.
*
* If the child fails to start the GUI, then the child will exit and the
* parent will return. If the child succeeds, then the parent will exit
* and the child will return.
*/
static void
gui_do_fork(void)
{
int pipefd[2]; /* pipe between parent and child */
int pipe_error;
int status;
int exit_status;
pid_t pid = -1;
/* Setup a pipe between the child and the parent, so that the parent
* knows when the child has done the setsid() call and is allowed to
* exit. */
pipe_error = (pipe(pipefd) < 0);
pid = fork();
if (pid < 0) /* Fork error */
{
EMSG(_("E851: Failed to create a new process for the GUI"));
return;
}
else if (pid > 0) /* Parent */
{
/* Give the child some time to do the setsid(), otherwise the
* exit() may kill the child too (when starting gvim from inside a
* gvim). */
if (!pipe_error)
{
/* The read returns when the child closes the pipe (or when
* the child dies for some reason). */
close(pipefd[1]);
status = gui_read_child_pipe(pipefd[0]);
if (status == GUI_CHILD_FAILED)
{
/* The child failed to start the GUI, so the caller must
* continue. There may be more error information written
* to stderr by the child. */
# ifdef __NeXT__
wait4(pid, &exit_status, 0, (struct rusage *)0);
# else
waitpid(pid, &exit_status, 0);
# endif
EMSG(_("E852: The child process failed to start the GUI"));
return;
}
else if (status == GUI_CHILD_IO_ERROR)
{
pipe_error = TRUE;
}
/* else GUI_CHILD_OK: parent exit */
}
if (pipe_error)
ui_delay(300L, TRUE);
/* When swapping screens we may need to go to the next line, e.g.,
* after a hit-enter prompt and using ":gui". */
if (newline_on_exit)
mch_errmsg("\r\n");
/*
* The parent must skip the normal exit() processing, the child
* will do it. For example, GTK messes up signals when exiting.
*/
_exit(0);
}
/* Child */
#ifdef FEAT_GUI_GTK
/* Call gtk_init_check() here after fork(). See gui_init_check(). */
if (gui_mch_init_check() != OK)
getout_preserve_modified(1);
#endif
# if defined(HAVE_SETSID) || defined(HAVE_SETPGID)
/*
* Change our process group. On some systems/shells a CTRL-C in the
* shell where Vim was started would otherwise kill gvim!
*/
# if defined(HAVE_SETSID)
(void)setsid();
# else
(void)setpgid(0, 0);
# endif
# endif
if (!pipe_error)
close(pipefd[0]);
# if defined(FEAT_GUI_GNOME) && defined(FEAT_SESSION)
/* Tell the session manager our new PID */
gui_mch_forked();
# endif
/* Try to start the GUI */
gui_attempt_start();
/* Notify the parent */
if (!pipe_error)
{
if (gui.in_use)
write_eintr(pipefd[1], "ok", 3);
else
write_eintr(pipefd[1], "fail", 5);
close(pipefd[1]);
}
/* If we failed to start the GUI, exit now. */
if (!gui.in_use)
getout_preserve_modified(1);
}
/*
* Read from a pipe assumed to be connected to the child process (this
* function is called from the parent).
* Return GUI_CHILD_OK if the child successfully started the GUI,
* GUY_CHILD_FAILED if the child failed, or GUI_CHILD_IO_ERROR if there was
* some other error.
*
* The file descriptor will be closed before the function returns.
*/
static int
gui_read_child_pipe(int fd)
{
long bytes_read;
#define READ_BUFFER_SIZE 10
char buffer[READ_BUFFER_SIZE];
bytes_read = read_eintr(fd, buffer, READ_BUFFER_SIZE - 1);
#undef READ_BUFFER_SIZE
close(fd);
if (bytes_read < 0)
return GUI_CHILD_IO_ERROR;
buffer[bytes_read] = NUL;
if (strcmp(buffer, "ok") == 0)
return GUI_CHILD_OK;
return GUI_CHILD_FAILED;
}
#endif /* MAY_FORK */
/*
* Call this when vim starts up, whether or not the GUI is started
*/
void
gui_prepare(int *argc, char **argv)
{
gui.in_use = FALSE; /* No GUI yet (maybe later) */
gui.starting = FALSE; /* No GUI yet (maybe later) */
gui_mch_prepare(argc, argv);
}
/*
* Try initializing the GUI and check if it can be started.
* Used from main() to check early if "vim -g" can start the GUI.
* Used from gui_init() to prepare for starting the GUI.
* Returns FAIL or OK.
*/
int
gui_init_check(void)
{
static int result = MAYBE;
if (result != MAYBE)
{
if (result == FAIL)
EMSG(_("E229: Cannot start the GUI"));
return result;
}
gui.shell_created = FALSE;
gui.dying = FALSE;
gui.in_focus = TRUE; /* so the guicursor setting works */
gui.dragged_sb = SBAR_NONE;
gui.dragged_wp = NULL;
gui.pointer_hidden = FALSE;
gui.col = 0;
gui.row = 0;
gui.num_cols = Columns;
gui.num_rows = Rows;
gui.cursor_is_valid = FALSE;
gui.scroll_region_top = 0;
gui.scroll_region_bot = Rows - 1;
gui.scroll_region_left = 0;
gui.scroll_region_right = Columns - 1;
gui.highlight_mask = HL_NORMAL;
gui.char_width = 1;
gui.char_height = 1;
gui.char_ascent = 0;
gui.border_width = 0;
gui.norm_font = NOFONT;
#ifndef FEAT_GUI_GTK
gui.bold_font = NOFONT;
gui.ital_font = NOFONT;
gui.boldital_font = NOFONT;
# ifdef FEAT_XFONTSET
gui.fontset = NOFONTSET;
# endif
#endif
#ifdef FEAT_MBYTE
gui.wide_font = NOFONT;
# ifndef FEAT_GUI_GTK
gui.wide_bold_font = NOFONT;
gui.wide_ital_font = NOFONT;
gui.wide_boldital_font = NOFONT;
# endif
#endif
#ifdef FEAT_MENU
# ifndef FEAT_GUI_GTK
# ifdef FONTSET_ALWAYS
gui.menu_fontset = NOFONTSET;
# else
gui.menu_font = NOFONT;
# endif
# endif
gui.menu_is_active = TRUE; /* default: include menu */
# ifndef FEAT_GUI_GTK
gui.menu_height = MENU_DEFAULT_HEIGHT;
gui.menu_width = 0;
# endif
#endif
#if defined(FEAT_TOOLBAR) && (defined(FEAT_GUI_MOTIF) || defined(FEAT_GUI_ATHENA))
gui.toolbar_height = 0;
#endif
#if defined(FEAT_FOOTER) && defined(FEAT_GUI_MOTIF)
gui.footer_height = 0;
#endif
#ifdef FEAT_BEVAL_TIP
gui.tooltip_fontset = NOFONTSET;
#endif
gui.scrollbar_width = gui.scrollbar_height = SB_DEFAULT_WIDTH;
gui.prev_wrap = -1;
#ifdef ALWAYS_USE_GUI
result = OK;
#else
# ifdef FEAT_GUI_GTK
/*
* Note: Don't call gtk_init_check() before fork, it will be called after
* the fork. When calling it before fork, it make vim hang for a while.
* See gui_do_fork().
* Use a simpler check if the GUI window can probably be opened.
*/
result = gui.dofork ? gui_mch_early_init_check() : gui_mch_init_check();
# else
result = gui_mch_init_check();
# endif
#endif
return result;
}
/*
* This is the call which starts the GUI.
*/
void
gui_init(void)
{
win_T *wp;
static int recursive = 0;
/*
* It's possible to use ":gui" in a .gvimrc file. The first halve of this
* function will then be executed at the first call, the rest by the
* recursive call. This allow the shell to be opened halfway reading a
* gvimrc file.
*/
if (!recursive)
{
++recursive;
clip_init(TRUE);
/* If can't initialize, don't try doing the rest */
if (gui_init_check() == FAIL)
{
--recursive;
clip_init(FALSE);
return;
}
/*
* Reset 'paste'. It's useful in the terminal, but not in the GUI. It
* breaks the Paste toolbar button.
*/
set_option_value((char_u *)"paste", 0L, NULL, 0);
/*
* Set up system-wide default menus.
*/
#if defined(SYS_MENU_FILE) && defined(FEAT_MENU)
if (vim_strchr(p_go, GO_NOSYSMENU) == NULL)
{
sys_menu = TRUE;
do_source((char_u *)SYS_MENU_FILE, FALSE, DOSO_NONE);
sys_menu = FALSE;
}
#endif
/*
* Switch on the mouse by default, unless the user changed it already.
* This can then be changed in the .gvimrc.
*/
if (!option_was_set((char_u *)"mouse"))
set_string_option_direct((char_u *)"mouse", -1,
(char_u *)"a", OPT_FREE, SID_NONE);
/*
* If -U option given, use only the initializations from that file and
* nothing else. Skip all initializations for "-U NONE" or "-u NORC".
*/
if (use_gvimrc != NULL)
{
if (STRCMP(use_gvimrc, "NONE") != 0
&& STRCMP(use_gvimrc, "NORC") != 0
&& do_source(use_gvimrc, FALSE, DOSO_NONE) != OK)
EMSG2(_("E230: Cannot read from \"%s\""), use_gvimrc);
}
else
{
/*
* Get system wide defaults for gvim, only when file name defined.
*/
#ifdef SYS_GVIMRC_FILE
do_source((char_u *)SYS_GVIMRC_FILE, FALSE, DOSO_NONE);
#endif
/*
* Try to read GUI initialization commands from the following
* places:
* - environment variable GVIMINIT
* - the user gvimrc file (~/.gvimrc)
* - the second user gvimrc file ($VIM/.gvimrc for Dos)
* - the third user gvimrc file ($VIM/.gvimrc for Amiga)
* The first that exists is used, the rest is ignored.
*/
if (process_env((char_u *)"GVIMINIT", FALSE) == FAIL
&& do_source((char_u *)USR_GVIMRC_FILE, TRUE,
DOSO_GVIMRC) == FAIL
#ifdef USR_GVIMRC_FILE2
&& do_source((char_u *)USR_GVIMRC_FILE2, TRUE,
DOSO_GVIMRC) == FAIL
#endif
#ifdef USR_GVIMRC_FILE3
&& do_source((char_u *)USR_GVIMRC_FILE3, TRUE,
DOSO_GVIMRC) == FAIL
#endif
)
{
#ifdef USR_GVIMRC_FILE4
(void)do_source((char_u *)USR_GVIMRC_FILE4, TRUE, DOSO_GVIMRC);
#endif
}
/*
* Read initialization commands from ".gvimrc" in current
* directory. This is only done if the 'exrc' option is set.
* Because of security reasons we disallow shell and write
* commands now, except for unix if the file is owned by the user
* or 'secure' option has been reset in environment of global
* ".gvimrc".
* Only do this if GVIMRC_FILE is not the same as USR_GVIMRC_FILE,
* USR_GVIMRC_FILE2, USR_GVIMRC_FILE3 or SYS_GVIMRC_FILE.
*/
if (p_exrc)
{
#ifdef UNIX
{
struct stat s;
/* if ".gvimrc" file is not owned by user, set 'secure'
* mode */
if (mch_stat(GVIMRC_FILE, &s) || s.st_uid != getuid())
secure = p_secure;
}
#else
secure = p_secure;
#endif
if ( fullpathcmp((char_u *)USR_GVIMRC_FILE,
(char_u *)GVIMRC_FILE, FALSE) != FPC_SAME
#ifdef SYS_GVIMRC_FILE
&& fullpathcmp((char_u *)SYS_GVIMRC_FILE,
(char_u *)GVIMRC_FILE, FALSE) != FPC_SAME
#endif
#ifdef USR_GVIMRC_FILE2
&& fullpathcmp((char_u *)USR_GVIMRC_FILE2,
(char_u *)GVIMRC_FILE, FALSE) != FPC_SAME
#endif
#ifdef USR_GVIMRC_FILE3
&& fullpathcmp((char_u *)USR_GVIMRC_FILE3,
(char_u *)GVIMRC_FILE, FALSE) != FPC_SAME
#endif
#ifdef USR_GVIMRC_FILE4
&& fullpathcmp((char_u *)USR_GVIMRC_FILE4,
(char_u *)GVIMRC_FILE, FALSE) != FPC_SAME
#endif
)
do_source((char_u *)GVIMRC_FILE, TRUE, DOSO_GVIMRC);
if (secure == 2)
need_wait_return = TRUE;
secure = 0;
}
}
if (need_wait_return || msg_didany)
wait_return(TRUE);
--recursive;
}
/* If recursive call opened the shell, return here from the first call */
if (gui.in_use)
return;
/*
* Create the GUI shell.
*/
gui.in_use = TRUE; /* Must be set after menus have been set up */
if (gui_mch_init() == FAIL)
goto error;
/* Avoid a delay for an error message that was printed in the terminal
* where Vim was started. */
emsg_on_display = FALSE;
msg_scrolled = 0;
clear_sb_text();
need_wait_return = FALSE;
msg_didany = FALSE;
/*
* Check validity of any generic resources that may have been loaded.
*/
if (gui.border_width < 0)
gui.border_width = 0;
/*
* Set up the fonts. First use a font specified with "-fn" or "-font".
*/
if (font_argument != NULL)
set_option_value((char_u *)"gfn", 0L, (char_u *)font_argument, 0);
if (
#ifdef FEAT_XFONTSET
(*p_guifontset == NUL
|| gui_init_font(p_guifontset, TRUE) == FAIL) &&
#endif
gui_init_font(*p_guifont == NUL ? hl_get_font_name()
: p_guifont, FALSE) == FAIL)
{
EMSG(_("E665: Cannot start GUI, no valid font found"));
goto error2;
}
#ifdef FEAT_MBYTE
if (gui_get_wide_font() == FAIL)
EMSG(_("E231: 'guifontwide' invalid"));
#endif
gui.num_cols = Columns;
gui.num_rows = Rows;
gui_reset_scroll_region();
/* Create initial scrollbars */
FOR_ALL_WINDOWS(wp)
{
gui_create_scrollbar(&wp->w_scrollbars[SBAR_LEFT], SBAR_LEFT, wp);
gui_create_scrollbar(&wp->w_scrollbars[SBAR_RIGHT], SBAR_RIGHT, wp);
}
gui_create_scrollbar(&gui.bottom_sbar, SBAR_BOTTOM, NULL);
#ifdef FEAT_MENU
gui_create_initial_menus(root_menu);
#endif
#ifdef FEAT_SUN_WORKSHOP
if (usingSunWorkShop)
workshop_init();
#endif
#ifdef FEAT_SIGN_ICONS
sign_gui_started();
#endif
/* Configure the desired menu and scrollbars */
gui_init_which_components(NULL);
/* All components of the GUI have been created now */
gui.shell_created = TRUE;
#ifndef FEAT_GUI_GTK
/* Set the shell size, adjusted for the screen size. For GTK this only
* works after the shell has been opened, thus it is further down. */
gui_set_shellsize(FALSE, TRUE, RESIZE_BOTH);
#endif
#if defined(FEAT_GUI_MOTIF) && defined(FEAT_MENU)
/* Need to set the size of the menubar after all the menus have been
* created. */
gui_mch_compute_menu_height((Widget)0);
#endif
/*
* Actually open the GUI shell.
*/
if (gui_mch_open() != FAIL)
{
#ifdef FEAT_TITLE
maketitle();
resettitle();
#endif
init_gui_options();
#ifdef FEAT_ARABIC
/* Our GUI can't do bidi. */
p_tbidi = FALSE;
#endif
#if defined(FEAT_GUI_GTK)
/* Give GTK+ a chance to put all widget's into place. */
gui_mch_update();
# ifdef FEAT_MENU
/* If there is no 'm' in 'guioptions' we need to remove the menu now.
* It was still there to make F10 work. */
if (vim_strchr(p_go, GO_MENUS) == NULL)
{
--gui.starting;
gui_mch_enable_menu(FALSE);
++gui.starting;
gui_mch_update();
}
# endif
/* Now make sure the shell fits on the screen. */
gui_set_shellsize(FALSE, TRUE, RESIZE_BOTH);
#endif
/* When 'lines' was set while starting up the topframe may have to be
* resized. */
win_new_shellsize();
#ifdef FEAT_BEVAL
/* Always create the Balloon Evaluation area, but disable it when
* 'ballooneval' is off */
# ifdef FEAT_GUI_GTK
balloonEval = gui_mch_create_beval_area(gui.drawarea, NULL,
&general_beval_cb, NULL);
# else
# if defined(FEAT_GUI_MOTIF) || defined(FEAT_GUI_ATHENA)
{
extern Widget textArea;
balloonEval = gui_mch_create_beval_area(textArea, NULL,
&general_beval_cb, NULL);
}
# else
# ifdef FEAT_GUI_W32
balloonEval = gui_mch_create_beval_area(NULL, NULL,
&general_beval_cb, NULL);
# endif
# endif
# endif
if (!p_beval)
gui_mch_disable_beval_area(balloonEval);
#endif
#if defined(FEAT_XIM) && defined(FEAT_GUI_GTK)
if (!im_xim_isvalid_imactivate())
EMSG(_("E599: Value of 'imactivatekey' is invalid"));
#endif
/* When 'cmdheight' was set during startup it may not have taken
* effect yet. */
if (p_ch != 1L)
command_height();
return;
}
error2:
#ifdef FEAT_GUI_X11
/* undo gui_mch_init() */
gui_mch_uninit();
#endif
error:
gui.in_use = FALSE;
clip_init(FALSE);
}
void
gui_exit(int rc)
{
/* don't free the fonts, it leads to a BUS error
* richard@whitequeen.com Jul 99 */
free_highlight_fonts();
gui.in_use = FALSE;
gui_mch_exit(rc);
}
#if defined(FEAT_GUI_GTK) || defined(FEAT_GUI_X11) || defined(FEAT_GUI_MSWIN) \
|| defined(FEAT_GUI_PHOTON) || defined(FEAT_GUI_MAC) || defined(PROTO)
# define NEED_GUI_UPDATE_SCREEN 1
/*
* Called when the GUI shell is closed by the user. If there are no changed
* files Vim exits, otherwise there will be a dialog to ask the user what to
* do.
* When this function returns, Vim should NOT exit!
*/
void
gui_shell_closed(void)
{
cmdmod_T save_cmdmod;
save_cmdmod = cmdmod;
/* Only exit when there are no changed files */
exiting = TRUE;
# ifdef FEAT_BROWSE
cmdmod.browse = TRUE;
# endif
# if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)
cmdmod.confirm = TRUE;
# endif
/* If there are changed buffers, present the user with a dialog if
* possible, otherwise give an error message. */
if (!check_changed_any(FALSE, FALSE))
getout(0);
exiting = FALSE;
cmdmod = save_cmdmod;
gui_update_screen(); /* redraw, window may show changed buffer */
}
#endif
/*
* Set the font. "font_list" is a comma separated list of font names. The
* first font name that works is used. If none is found, use the default
* font.
* If "fontset" is TRUE, the "font_list" is used as one name for the fontset.
* Return OK when able to set the font. When it failed FAIL is returned and
* the fonts are unchanged.
*/
int
gui_init_font(char_u *font_list, int fontset UNUSED)
{
#define FONTLEN 320
char_u font_name[FONTLEN];
int font_list_empty = FALSE;
int ret = FAIL;
if (!gui.in_use)
return FAIL;
font_name[0] = NUL;
if (*font_list == NUL)
font_list_empty = TRUE;
else
{
#ifdef FEAT_XFONTSET
/* When using a fontset, the whole list of fonts is one name. */
if (fontset)
ret = gui_mch_init_font(font_list, TRUE);
else
#endif
while (*font_list != NUL)
{
/* Isolate one comma separated font name. */
(void)copy_option_part(&font_list, font_name, FONTLEN, ",");
/* Careful!!! The Win32 version of gui_mch_init_font(), when
* called with "*" will change p_guifont to the selected font
* name, which frees the old value. This makes font_list
* invalid. Thus when OK is returned here, font_list must no
* longer be used! */
if (gui_mch_init_font(font_name, FALSE) == OK)
{
#if defined(FEAT_MBYTE) && !defined(FEAT_GUI_GTK)
/* If it's a Unicode font, try setting 'guifontwide' to a
* similar double-width font. */
if ((p_guifontwide == NULL || *p_guifontwide == NUL)
&& strstr((char *)font_name, "10646") != NULL)
set_guifontwide(font_name);
#endif
ret = OK;
break;
}
}
}
if (ret != OK
&& STRCMP(font_list, "*") != 0
&& (font_list_empty || gui.norm_font == NOFONT))
{
/*
* Couldn't load any font in 'font_list', keep the current font if
* there is one. If 'font_list' is empty, or if there is no current
* font, tell gui_mch_init_font() to try to find a font we can load.
*/
ret = gui_mch_init_font(NULL, FALSE);
}
if (ret == OK)
{
#ifndef FEAT_GUI_GTK
/* Set normal font as current font */
# ifdef FEAT_XFONTSET
if (gui.fontset != NOFONTSET)
gui_mch_set_fontset(gui.fontset);
else
# endif
gui_mch_set_font(gui.norm_font);
#endif
gui_set_shellsize(FALSE, TRUE, RESIZE_BOTH);
}
return ret;
}
#if defined(FEAT_MBYTE) || defined(PROTO)
# ifndef FEAT_GUI_GTK
/*
* Try setting 'guifontwide' to a font twice as wide as "name".
*/
static void
set_guifontwide(char_u *name)
{
int i = 0;
char_u wide_name[FONTLEN + 10]; /* room for 2 * width and '*' */
char_u *wp = NULL;
char_u *p;
GuiFont font;
wp = wide_name;
for (p = name; *p != NUL; ++p)
{
*wp++ = *p;
if (*p == '-')
{
++i;
if (i == 6) /* font type: change "--" to "-*-" */
{
if (p[1] == '-')
*wp++ = '*';
}
else if (i == 12) /* found the width */
{
++p;
i = getdigits(&p);
if (i != 0)
{
/* Double the width specification. */
sprintf((char *)wp, "%d%s", i * 2, p);
font = gui_mch_get_font(wide_name, FALSE);
if (font != NOFONT)
{
gui_mch_free_font(gui.wide_font);
gui.wide_font = font;
set_string_option_direct((char_u *)"gfw", -1,
wide_name, OPT_FREE, 0);
}
}
break;
}
}
}
}
# endif /* !FEAT_GUI_GTK */
/*
* Get the font for 'guifontwide'.
* Return FAIL for an invalid font name.
*/
int
gui_get_wide_font(void)
{
GuiFont font = NOFONT;
char_u font_name[FONTLEN];
char_u *p;
if (!gui.in_use) /* Can't allocate font yet, assume it's OK. */
return OK; /* Will give an error message later. */
if (p_guifontwide != NULL && *p_guifontwide != NUL)
{
for (p = p_guifontwide; *p != NUL; )
{
/* Isolate one comma separated font name. */
(void)copy_option_part(&p, font_name, FONTLEN, ",");
font = gui_mch_get_font(font_name, FALSE);
if (font != NOFONT)
break;
}
if (font == NOFONT)
return FAIL;
}
gui_mch_free_font(gui.wide_font);
# ifdef FEAT_GUI_GTK
/* Avoid unnecessary overhead if 'guifontwide' is equal to 'guifont'. */
if (font != NOFONT && gui.norm_font != NOFONT
&& pango_font_description_equal(font, gui.norm_font))