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/*
* util.cc -- various utility routines
*/
#include "picsim.hh"
void
redraw( void )
{
ic_refresh( W.ic, NULL, NULL, NULL );
info_refresh( W.info, NULL, NULL, NULL );
instr_refresh( W.instr, NULL, NULL, NULL );
reg_refresh( W.regs, NULL, NULL, NULL );
}
void
load_file( Widget w, XEvent *ev, String *prms, Cardinal *nprm )
{
dialog( "Filename?", 1, "OK" );
}
static void dialog_format(char*text, XFontStruct*finfo, Dimension width);
static Widget dialog_box = None;
static Widget dialog_form;
static Widget dialog_text;
static Widget *dialog_buttons = NULL;
static int dialog_nbuttons = 0;
static void
dialog_ok( Widget w, XtPointer closure, XtPointer call_data )
{
int i;
XtPopdown( dialog_box );
XtUnrealizeWidget( dialog_box );
XtUnmanageChildren( dialog_buttons, dialog_nbuttons );
XtUnmanageChild( dialog_text );
XtUnmanageChild( dialog_form );
XtUnmanageChild( dialog_box );
for (i = 0; i < dialog_nbuttons; i++) XtDestroyWidget( dialog_buttons[i] );
XtFree( (char *)dialog_buttons );
dialog_buttons = NULL;
fprintf( stderr, "button %d\n", closure );
}
int
dialog( const char *text, int n, ... )
{
va_list buttons;
int i, j;
Dimension bwidth;
Dimension bheight;
Dimension twidth;
Dimension theight;
int fgap;
Widget tsink;
Dimension width;
Dimension height;
Window root;
Window child;
int root_x, root_y;
int win_x, win_y;
unsigned int mask;
char *fmttext;
XFontStruct *finfo;
fmttext = (char *)XtMalloc( strlen( text ) + 1 );
strcpy( fmttext, text );
va_start( buttons, n );
if (dialog_box == None) {
dialog_box = XtVaCreateWidget( "dialog",
overrideShellWidgetClass,
W.toplevel,
NULL );
dialog_form = XtVaCreateWidget( "form", formWidgetClass,
dialog_box,
NULL );
dialog_text = XtVaCreateWidget( "text", asciiTextWidgetClass,
dialog_form,
XtNautoFill, (XtPointer)True,
XtNscrollVertical,
(XtPointer)XawtextScrollWhenNeeded,
XtNeditType,
(XtPointer)XawtextRead,
XtNdisplayCaret,
(XtPointer)False,
XtNresizable,
(XtPointer)True,
NULL );
}
XawFormDoLayout( dialog_form, False );
dialog_buttons = (Widget *)XtMalloc( n * sizeof(Widget) );
for (i = 0; i < n; i++) {
Widget b;
char *name;
name = va_arg(buttons, char *);
if (!i)
b = XtVaCreateWidget( name, commandWidgetClass,
dialog_form,
XtNlabel, name,
XtNfromVert, dialog_text,
XtNresizable, (XtPointer)True,
NULL );
else
b = XtVaCreateWidget( name, commandWidgetClass,
dialog_form,
XtNlabel, name,
XtNfromVert, dialog_text,
XtNfromHoriz,
(XtPointer)dialog_buttons[i-1],
XtNresizable, (XtPointer)True,
NULL );
XtAddCallback( b, "callback", dialog_ok, (XtPointer)i );
dialog_buttons[i] = b;
}
dialog_nbuttons = n;
XtVaGetValues( dialog_buttons[0],
XtNwidth, &bwidth,
XtNheight, &bheight,
NULL );
XtVaGetValues( dialog_form,
XtNdefaultDistance, &fgap,
NULL );
if (n == 1) {
twidth = bwidth * 2;
XtVaSetValues( dialog_buttons[0],
XtNhorizDistance, twidth / 4 + fgap,
NULL );
} else {
twidth = (bwidth + 4) * n + 4;
}
theight = twidth * 2 / 3;
XtVaGetValues( dialog_text,
XtNtextSink, &tsink,
XtNfont, &finfo,
NULL );
dialog_format( fmttext, finfo, twidth );
for (i = 2, j = 0; fmttext[j]; j++) if (fmttext[j] == '\n') ++i;
j = XawTextSinkMaxHeight( tsink, i );
if (j < theight) {
theight = j;
} else {
strcpy( fmttext, text );
dialog_format( fmttext, finfo, twidth - 18 );
}
XtVaSetValues( dialog_text,
XtNwidth, twidth,
XtNheight, theight,
XtNstring, fmttext,
NULL );
XtVaSetValues( dialog_form,
XtNwidth, twidth + fgap * 2,
XtNheight, theight + bheight + fgap * 3,
NULL );
XawFormDoLayout( dialog_form, True );
XtVaGetValues( dialog_form,
XtNwidth, &width,
XtNheight, &height,
NULL );
XQueryPointer( XtDisplay(W.toplevel), XtWindow(W.toplevel),
&root, &child,
&root_x, &root_y, &win_x, &win_y, &mask );
root_x = (root_x < width / 2) ? 0 : root_x - width / 2;
root_y = (root_y < height - bheight / 2) ? 0 : root_y-height+bheight/2;
XtVaSetValues( dialog_box,
XtNwidth, width,
XtNheight, height,
XtNx, root_x,
XtNy, root_y,
NULL );
XtManageChild( dialog_text );
XtManageChildren( dialog_buttons, dialog_nbuttons );
XtManageChild( dialog_form );
XtManageChild( dialog_box );
XtRealizeWidget( dialog_box );
XtPopup( dialog_box, XtGrabExclusive );
XtFree( fmttext );
return 0;
}
/*
* format the text -- put in newlines whenever the current line gets
* too long.
*/
static void
dialog_format( char *text, XFontStruct *finfo, Dimension width )
{
int i, j, k;
for (i = j = 0, k = 1; text[k]; ++k) {
if (isspace(text[k])) {
if (XTextWidth( finfo, text + i, k - i ) >= width) {
if (isspace(text[j])) {
text[j++] = '\n';
i = j;
} else {
text[k] = '\n';
}
} else {
j = k;
}
if (text[k] == '\n') i = j = k + 1;
}
}
if (XTextWidth( finfo, text + i, k - i ) >= width && isspace(text[j]))
text[j] = '\n';
}
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