/*
* pterm - a fusion of the PuTTY terminal emulator with a Unix pty
* back end, all running as a GTK application. Wish me luck.
*/
#include <string.h>
#include <assert.h>
#include <stdlib.h>
#include <stdio.h>
#include <time.h>
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
#define PUTTY_DO_GLOBALS /* actually _define_ globals */
#include "putty.h"
#define CAT2(x,y) x ## y
#define CAT(x,y) CAT2(x,y)
#define ASSERT(x) enum {CAT(assertion_,__LINE__) = 1 / (x)}
#define NCOLOURS (lenof(((Config *)0)->colours))
struct gui_data {
GtkWidget *area;
GdkPixmap *pixmap;
GdkFont *fonts[2]; /* normal and bold (for now!) */
GdkCursor *rawcursor, *textcursor;
GdkColor cols[NCOLOURS];
GdkColormap *colmap;
GdkGC *black_gc, *white_gc;
};
static struct gui_data the_inst;
static struct gui_data *inst = &the_inst; /* so we always write `inst->' */
static int send_raw_mouse;
void ldisc_update(int echo, int edit)
{
/*
* This is a stub in pterm. If I ever produce a Unix
* command-line ssh/telnet/rlogin client (i.e. a port of plink)
* then it will require some termios manoeuvring analogous to
* that in the Windows plink.c, but here it's meaningless.
*/
}
int askappend(char *filename)
{
/*
* FIXME: for the moment we just wipe the log file. Since I
* haven't yet enabled logging, this shouldn't matter yet!
*/
return 2;
}
void logevent(char *string)
{
/*
* FIXME: event log entries are currently ignored.
*/
}
/*
* Translate a raw mouse button designation (LEFT, MIDDLE, RIGHT)
* into a cooked one (SELECT, EXTEND, PASTE).
*
* In Unix, this is not configurable; the X button arrangement is
* rock-solid across all applications, everyone has a three-button
* mouse or a means of faking it, and there is no need to switch
* buttons around at all.
*/
Mouse_Button translate_button(Mouse_Button button)
{
if (button == MBT_LEFT)
return MBT_SELECT;
if (button == MBT_MIDDLE)
return MBT_PASTE;
if (button == MBT_RIGHT)
return MBT_EXTEND;
return 0; /* shouldn't happen */
}
/*
* Minimise or restore the window in response to a server-side
* request.
*/
void set_iconic(int iconic)
{
/* FIXME: currently ignored */
}
/*
* Move the window in response to a server-side request.
*/
void move_window(int x, int y)
{
/* FIXME: currently ignored */
}
/*
* Move the window to the top or bottom of the z-order in response
* to a server-side request.
*/
void set_zorder(int top)
{
/* FIXME: currently ignored */
}
/*
* Refresh the window in response to a server-side request.
*/
void refresh_window(void)
{
/* FIXME: currently ignored */
}
/*
* Maximise or restore the window in response to a server-side
* request.
*/
void set_zoomed(int zoomed)
{
/* FIXME: currently ignored */
}
/*
* Report whether the window is iconic, for terminal reports.
*/
int is_iconic(void)
{
return 0; /* FIXME */
}
/*
* Report the window's position, for terminal reports.
*/
void get_window_pos(int *x, int *y)
{
*x = 3; *y = 4; /* FIXME */
}
/*
* Report the window's pixel size, for terminal reports.
*/
void get_window_pixels(int *x, int *y)
{
*x = 1; *y = 2; /* FIXME */
}
/*
* Return the window or icon title.
*/
char *get_window_title(int icon)
{
return "FIXME: window title retrieval not yet implemented";
}
gint delete_window(GtkWidget *widget, GdkEvent *event, gpointer data)
{
/*
* FIXME: warn on close?
*/
return FALSE;
}
gint configure_area(GtkWidget *widget, GdkEventConfigure *event, gpointer data)
{
struct gui_data *inst = (struct gui_data *)data;
if (inst->pixmap)
gdk_pixmap_unref(inst->pixmap);
inst->pixmap = gdk_pixmap_new(widget->window, 9*80, 15*24, -1);
inst->fonts[0] = gdk_font_load("9x15t"); /* XXCONFIG */
inst->fonts[1] = NULL; /* XXCONFIG */
inst->black_gc = widget->style->black_gc;
inst->white_gc = widget->style->white_gc;
/*
* Set up the colour map.
*/
inst->colmap = gdk_colormap_get_system();
{
static const int ww[] = {
6, 7, 8, 9, 10, 11, 12, 13,
14, 15, 16, 17, 18, 19, 20, 21,
0, 1, 2, 3, 4, 5
};
gboolean success[NCOLOURS];
int i;
assert(lenof(ww) == NCOLOURS);
for (i = 0; i < NCOLOURS; i++) {
inst->cols[i].red = cfg.colours[ww[i]][0] * 0x0101;
inst->cols[i].green = cfg.colours[ww[i]][1] * 0x0101;
inst->cols[i].blue = cfg.colours[ww[i]][2] * 0x0101;
}
gdk_colormap_alloc_colors(inst->colmap, inst->cols, NCOLOURS,
FALSE, FALSE, success);
for (i = 0; i < NCOLOURS; i++) {
if (!success[i])
g_error("pterm: couldn't allocate colour %d (#%02x%02x%02x)\n",
i, cfg.colours[i][0], cfg.colours[i][1], cfg.colours[i][2]);
}
}
return TRUE;
}
gint expose_area(GtkWidget *widget, GdkEventExpose *event, gpointer data)
{
/* struct gui_data *inst = (struct gui_data *)data; */
/*
* Pass the exposed rectangle to terminal.c, which will call us
* back to do the actual painting.
*/
term_paint(NULL,
event->area.x / 9, event->area.y / 15,
(event->area.x + event->area.width - 1) / 9,
(event->area.y + event->area.height - 1) / 15);
return TRUE;
}
#define KEY_PRESSED(k) \
(inst->keystate[(k) / 32] & (1 << ((k) % 32)))
gint key_event(GtkWidget *widget, GdkEventKey *event, gpointer data)
{
/* struct gui_data *inst = (struct gui_data *)data; */
char output[32];
int start, end;
if (event->type == GDK_KEY_PRESS) {
#ifdef KEY_DEBUGGING
{
int i;
printf("keypress: keyval = %04x, state = %08x; string =",
event->keyval, event->state);
for (i = 0; event->string[i]; i++)
printf(" %02x", (unsigned char) event->string[i]);
printf("\n");
}
#endif
/*
* NYI:
* - Shift-PgUp/PgDn for scrollbar
* - nethack mode
* - alt+numpad
* - Compose key (!!! requires Unicode faff before even trying)
* - Shift-Ins for paste (need to deal with pasting first)
*/
/* ALT+things gives leading Escape. */
output[0] = '\033';
strncpy(output+1, event->string, 31);
output[31] = '\0';
end = strlen(output);
if (event->state & GDK_MOD1_MASK)
start = 0;
else
start = 1;
/* Control-` is the same as Control-\ (unless gtk has a better idea) */
if (!event->string[0] && event->keyval == '`' &&
(event->state & GDK_CONTROL_MASK)) {
output[1] = '\x1C';
end = 2;
}
/* Control-Break is the same as Control-C */
if (event->keyval == GDK_Break &&
(event->state & GDK_CONTROL_MASK)) {
output[1] = '\003';
end = 2;
}
/* Control-2, Control-Space and Control-@ are NUL */
if (!event->string[0] &&
(event->keyval == ' ' || event->keyval == '2' ||
event->keyval == '@') &&
(event->state & (GDK_SHIFT_MASK |
GDK_CONTROL_MASK)) == GDK_CONTROL_MASK) {
output[1] = '\0';
end = 2;
}
/* Control-Shift-Space is 160 (ISO8859 nonbreaking space) */
if (!event->string[0] && event->keyval == ' ' &&
(event->state & (GDK_SHIFT_MASK | GDK_CONTROL_MASK)) ==
(GDK_SHIFT_MASK | GDK_CONTROL_MASK)) {
output[1] = '\240';
end = 2;
}
/* We don't let GTK tell us what Backspace is! We know better. */
if (event->keyval == GDK_BackSpace &&
!(event->state & GDK_SHIFT_MASK)) {
output[1] = cfg.bksp_is_delete ? '\x7F' : '\x08';
end = 2;
}
/* Shift-Tab is ESC [ Z */
if (event->keyval == GDK_ISO_Left_Tab ||
(event->keyval == GDK_Tab && (event->state & GDK_SHIFT_MASK))) {
end = 1 + sprintf(output+1, "\033[Z");
}
/*
* Application keypad mode.
*/
if (app_keypad_keys && !cfg.no_applic_k) {
int xkey = 0;
switch (event->keyval) {
case GDK_Num_Lock: xkey = 'P'; break;
case GDK_KP_Divide: xkey = 'Q'; break;
case GDK_KP_Multiply: xkey = 'R'; break;
case GDK_KP_Subtract: xkey = 'S'; break;
/*
* Keypad + is tricky. It covers a space that would
* be taken up on the VT100 by _two_ keys; so we
* let Shift select between the two. Worse still,
* in xterm function key mode we change which two...
*/
case GDK_KP_Add:
if (cfg.funky_type == 2) {
if (event->state & GDK_SHIFT_MASK)
xkey = 'l';
else
xkey = 'k';
} else if (event->state & GDK_SHIFT_MASK)
xkey = 'm';
else
xkey = 'l';
break;
case GDK_KP_Enter: xkey = 'M'; break;
case GDK_KP_0: case GDK_KP_Insert: xkey = 'p'; break;
case GDK_KP_1: case GDK_KP_End: xkey = 'q'; break;
case GDK_KP_2: case GDK_KP_Down: xkey = 'r'; break;
case GDK_KP_3: case GDK_KP_Page_Down: xkey = 's'; break;
case GDK_KP_4: case GDK_KP_Left: xkey = 't'; break;
case GDK_KP_5: case GDK_KP_Begin: xkey = 'u'; break;
case GDK_KP_6: case GDK_KP_Right: xkey = 'v'; break;
case GDK_KP_7: case GDK_KP_Home: xkey = 'w'; break;
case GDK_KP_8: case GDK_KP_Up: xkey = 'x'; break;
case GDK_KP_9: case GDK_KP_Page_Up: xkey = 'y'; break;
case GDK_KP_Decimal: case GDK_KP_Delete: xkey = 'n'; break;
}
if (xkey) {
if (vt52_mode) {
if (xkey >= 'P' && xkey <= 'S')
end = 1 + sprintf(output+1, "\033%c", xkey);
else
end = 1 + sprintf(output+1, "\033?%c", xkey);
} else
end = 1 + sprintf(output+1, "\033O%c", xkey);
goto done;
}
}
/*
* Next, all the keys that do tilde codes. (ESC '[' nn '~',
* for integer decimal nn.)
*
* We also deal with the weird ones here. Linux VCs replace F1
* to F5 by ESC [ [ A to ESC [ [ E. rxvt doesn't do _that_, but
* does replace Home and End (1~ and 4~) by ESC [ H and ESC O w
* respectively.
*/
{
int code = 0;
switch (event->keyval) {
case GDK_F1:
code = (event->state & GDK_SHIFT_MASK ? 23 : 11);
break;
case GDK_F2:
code = (event->state & GDK_SHIFT_MASK ? 24 : 12);
break;
case GDK_F3:
code = (event->state & GDK_SHIFT_MASK ? 25 : 13);
break;
case GDK_F4:
code = (event->state & GDK_SHIFT_MASK ? 26 : 14);
break;
case GDK_F5:
code = (event->state & GDK_SHIFT_MASK ? 28 : 15);
break;
case GDK_F6:
code = (event->state & GDK_SHIFT_MASK ? 29 : 17);
break;
case GDK_F7:
code = (event->state & GDK_SHIFT_MASK ? 31 : 18);
break;
case GDK_F8:
code = (event->state & GDK_SHIFT_MASK ? 32 : 19);
break;
case GDK_F9:
code = (event->state & GDK_SHIFT_MASK ? 33 : 20);
break;
case GDK_F10:
code = (event->state & GDK_SHIFT_MASK ? 34 : 21);
break;
case GDK_F11:
code = 23;
break;
case GDK_F12:
code = 24;
break;
case GDK_F13:
code = 25;
break;
case GDK_F14:
code = 26;
break;
case GDK_F15:
code = 28;
break;
case GDK_F16:
code = 29;
break;
case GDK_F17:
code = 31;
break;
case GDK_F18:
code = 32;
break;
case GDK_F19:
code = 33;
break;
case GDK_F20:
code = 34;
break;
}
if (!(event->state & GDK_CONTROL_MASK)) switch (event->keyval) {
case GDK_Home: case GDK_KP_Home:
code = 1;
break;
case GDK_Insert: case GDK_KP_Insert:
code = 2;
break;
case GDK_Delete: case GDK_KP_Delete:
code = 3;
break;
case GDK_End: case GDK_KP_End:
code = 4;
break;
case GDK_Page_Up: case GDK_KP_Page_Up:
code = 5;
break;
case GDK_Page_Down: case GDK_KP_Page_Down:
code = 6;
break;
}
/* Reorder edit keys to physical order */
if (cfg.funky_type == 3 && code <= 6)
code = "\0\2\1\4\5\3\6"[code];
if (vt52_mode && code > 0 && code <= 6) {
end = 1 + sprintf(output+1, "\x1B%c", " HLMEIG"[code]);
goto done;
}
if (cfg.funky_type == 5 && /* SCO function keys */
code >= 11 && code <= 34) {
char codes[] = "MNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz@[\\]^_`{";
int index = 0;
switch (event->keyval) {
case GDK_F1: index = 0; break;
case GDK_F2: index = 1; break;
case GDK_F3: index = 2; break;
case GDK_F4: index = 3; break;
case GDK_F5: index = 4; break;
case GDK_F6: index = 5; break;
case GDK_F7: index = 6; break;
case GDK_F8: index = 7; break;
case GDK_F9: index = 8; break;
case GDK_F10: index = 9; break;
case GDK_F11: index = 10; break;
case GDK_F12: index = 11; break;
}
if (event->state & GDK_SHIFT_MASK) index += 12;
if (event->state & GDK_CONTROL_MASK) index += 24;
end = 1 + sprintf(output+1, "\x1B[%c", codes[index]);
goto done;
}
if (cfg.funky_type == 5 && /* SCO small keypad */
code >= 1 && code <= 6) {
char codes[] = "HL.FIG";
if (code == 3) {
output[1] = '\x7F';
end = 2;
} else {
end = 1 + sprintf(output+1, "\x1B[%c", codes[code-1]);
}
goto done;
}
if ((vt52_mode || cfg.funky_type == 4) && code >= 11 && code <= 24) {
int offt = 0;
if (code > 15)
offt++;
if (code > 21)
offt++;
if (vt52_mode)
end = 1 + sprintf(output+1,
"\x1B%c", code + 'P' - 11 - offt);
else
end = 1 + sprintf(output+1,
"\x1BO%c", code + 'P' - 11 - offt);
goto done;
}
if (cfg.funky_type == 1 && code >= 11 && code <= 15) {
end = 1 + sprintf(output+1, "\x1B[[%c", code + 'A' - 11);
goto done;
}
if (cfg.funky_type == 2 && code >= 11 && code <= 14) {
if (vt52_mode)
end = 1 + sprintf(output+1, "\x1B%c", code + 'P' - 11);
else
end = 1 + sprintf(output+1, "\x1BO%c", code + 'P' - 11);
goto done;
}
if (cfg.rxvt_homeend && (code == 1 || code == 4)) {
end = 1 + sprintf(output+1, code == 1 ? "\x1B[H" : "\x1BOw");
goto done;
}
if (code) {
end = 1 + sprintf(output+1, "\x1B[%d~", code);
goto done;
}
}
/*
* Cursor keys. (This includes the numberpad cursor keys,
* if we haven't already done them due to app keypad mode.)
*
* Here we also process un-numlocked un-appkeypadded KP5,
* which sends ESC [ G.
*/
{
int xkey = 0;
switch (event->keyval) {
case GDK_Up: case GDK_KP_Up: xkey = 'A'; break;
case GDK_Down: case GDK_KP_Down: xkey = 'B'; break;
case GDK_Right: case GDK_KP_Right: xkey = 'C'; break;
case GDK_Left: case GDK_KP_Left: xkey = 'D'; break;
case GDK_Begin: case GDK_KP_Begin: xkey = 'G'; break;
}
if (xkey) {
/*
* The arrow keys normally do ESC [ A and so on. In
* app cursor keys mode they do ESC O A instead.
* Ctrl toggles the two modes.
*/
if (vt52_mode) {
end = 1 + sprintf(output+1, "\033%c", xkey);
} else if (!app_cursor_keys ^
!(event->state & GDK_CONTROL_MASK)) {
end = 1 + sprintf(output+1, "\033O%c", xkey);
} else {
end = 1 + sprintf(output+1, "\033[%c", xkey);
}
goto done;
}
}
done:
#ifdef KEY_DEBUGGING
{
int i;
printf("generating sequence:");
for (i = start; i < end; i++)
printf(" %02x", (unsigned char) output[i]);
printf("\n");
}
#endif
ldisc_send(output+start, end-start, 1);
term_out();
}
return TRUE;
}
gint timer_func(gpointer data)
{
/* struct gui_data *inst = (struct gui_data *)data; */
term_update();
return TRUE;
}
void destroy(GtkWidget *widget, gpointer data)
{
gtk_main_quit();
}
gint focus_event(GtkWidget *widget, GdkEventFocus *event, gpointer data)
{
has_focus = event->in;
term_out();
term_update();
return FALSE;
}
/*
* set or clear the "raw mouse message" mode
*/
void set_raw_mouse_mode(int activate)
{
activate = activate && !cfg.no_mouse_rep;
send_raw_mouse = activate;
if (send_raw_mouse)
gdk_window_set_cursor(inst->area->window, inst->rawcursor);
else
gdk_window_set_cursor(inst->area->window, inst->textcursor);
}
void request_resize(int w, int h)
{
/* FIXME: currently ignored */
}
void palette_set(int n, int r, int g, int b)
{
/* FIXME: currently ignored */
}
void palette_reset(void)
{
/* FIXME: currently ignored */
}
void write_clip(wchar_t * data, int len, int must_deselect)
{
/* FIXME: currently ignored */
}
void get_clip(wchar_t ** p, int *len)
{
if (p) {
/* FIXME: currently nonfunctional */
*p = NULL;
*len = 0;
}
}
void set_title(char *title)
{
/* FIXME: currently ignored */
}
void set_icon(char *title)
{
/* FIXME: currently ignored */
}
void set_sbar(int total, int start, int page)
{
/* FIXME: currently ignored */
}
void sys_cursor(int x, int y)
{
/*
* This is meaningless under X.
*/
}
void beep(int mode)
{
gdk_beep();
}
int CharWidth(Context ctx, int uc)
{
/*
* Under X, any fixed-width font really _is_ fixed-width.
* Double-width characters will be dealt with using a separate
* font. For the moment we can simply return 1.
*/
return 1;
}
Context get_ctx(void)
{
GdkGC *gc;
if (!inst->area->window)
return NULL;
gc = gdk_gc_new(inst->area->window);
return gc;
}
void free_ctx(Context ctx)
{
GdkGC *gc = (GdkGC *)ctx;
gdk_gc_unref(gc);
}
/*
* Draw a line of text in the window, at given character
* coordinates, in given attributes.
*
* We are allowed to fiddle with the contents of `text'.
*/
void do_text(Context ctx, int x, int y, char *text, int len,
unsigned long attr, int lattr)
{
int nfg, nbg, t;
GdkGC *gc = (GdkGC *)ctx;
/*
* NYI:
* - ATTR_WIDE (is this for Unicode CJK? I hope so)
* - LATTR_* (ESC # 4 double-width and double-height stuff)
* - cursor shapes other than block
* - VT100 line drawing stuff; code pages in general!
* - shadow bolding
* - underline
*/
nfg = 2 * ((attr & ATTR_FGMASK) >> ATTR_FGSHIFT);
nbg = 2 * ((attr & ATTR_BGMASK) >> ATTR_BGSHIFT);
if (attr & ATTR_REVERSE) {
t = nfg;
nfg = nbg;
nbg = t;
}
if (cfg.bold_colour && (attr & ATTR_BOLD))
nfg++;
if (cfg.bold_colour && (attr & ATTR_BLINK))
nbg++;
if (attr & TATTR_ACTCURS) {
nfg = NCOLOURS-2;
nbg = NCOLOURS-1;
}
gdk_gc_set_foreground(gc, &inst->cols[nbg]);
gdk_draw_rectangle(inst->pixmap, gc, 1, x*9, y*15, len*9, 15);
gdk_gc_set_foreground(gc, &inst->cols[nfg]);
gdk_draw_text(inst->pixmap, inst->fonts[0], gc,
x*9, y*15 + inst->fonts[0]->ascent, text, len);
if (attr & ATTR_UNDER) {
int uheight = inst->fonts[0]->ascent + 1;
if (uheight >= 15)
uheight = 14;
gdk_draw_line(inst->pixmap, gc, x*9, y*15 + uheight,
(x+len)*9-1, y*15+uheight);
}
gdk_draw_pixmap(inst->area->window, gc, inst->pixmap,
x*9, y*15, x*9, y*15, len*9, 15);
}
void do_cursor(Context ctx, int x, int y, char *text, int len,
unsigned long attr, int lattr)
{
int passive;
GdkGC *gc = (GdkGC *)ctx;
/*
* NYI: cursor shapes other than block
*/
if (attr & TATTR_PASCURS) {
attr &= ~TATTR_PASCURS;
passive = 1;
} else
passive = 0;
do_text(ctx, x, y, text, len, attr, lattr);
if (passive) {
gdk_gc_set_foreground(gc, &inst->cols[NCOLOURS-1]);
gdk_draw_rectangle(inst->pixmap, gc, 0, x*9, y*15, len*9-1, 15-1);
gdk_draw_pixmap(inst->area->window, gc, inst->pixmap,
x*9, y*15, x*9, y*15, len*9, 15);
}
}
void modalfatalbox(char *p, ...)
{
va_list ap;
fprintf(stderr, "FATAL ERROR: ");
va_start(ap, p);
vfprintf(stderr, p, ap);
va_end(ap);
fputc('\n', stderr);
exit(1);
}
int main(int argc, char **argv)
{
GtkWidget *window;
gtk_init(&argc, &argv);
do_defaults(NULL, &cfg);
init_ucs();
back = &pty_backend;
back->init(NULL, 0, NULL, 0);
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
inst->area = gtk_drawing_area_new();
gtk_drawing_area_size(GTK_DRAWING_AREA(inst->area),
9*80, 15*24);/* FIXME: proper resizing stuff */
gtk_container_add(GTK_CONTAINER(window), inst->area);
gtk_signal_connect(GTK_OBJECT(window), "destroy",
GTK_SIGNAL_FUNC(destroy), inst);
gtk_signal_connect(GTK_OBJECT(window), "delete_event",
GTK_SIGNAL_FUNC(delete_window), inst);
gtk_signal_connect(GTK_OBJECT(window), "key_press_event",
GTK_SIGNAL_FUNC(key_event), inst);
gtk_signal_connect(GTK_OBJECT(window), "focus_in_event",
GTK_SIGNAL_FUNC(focus_event), inst);
gtk_signal_connect(GTK_OBJECT(window), "focus_out_event",
GTK_SIGNAL_FUNC(focus_event), inst);
gtk_signal_connect(GTK_OBJECT(inst->area), "configure_event",
GTK_SIGNAL_FUNC(configure_area), inst);
gtk_signal_connect(GTK_OBJECT(inst->area), "expose_event",
GTK_SIGNAL_FUNC(expose_area), inst);
gtk_timeout_add(20, timer_func, inst);
gtk_widget_add_events(GTK_WIDGET(inst->area),
GDK_KEY_PRESS_MASK | GDK_KEY_RELEASE_MASK);
gtk_widget_show(inst->area);
gtk_widget_show(window);
inst->textcursor = gdk_cursor_new(GDK_XTERM);
inst->rawcursor = gdk_cursor_new(GDK_ARROW);
gdk_window_set_cursor(inst->area->window, inst->textcursor);
term_init();
term_size(24, 80, 2000);
gtk_main();
return 0;
}