Conference bulova::decw_jan-89_to_nov-90

2854.0. "CSText widget do not mix fonts" by BEAGLE::LAFORGUE (It works better if you plug it!) Fri Jun 01 1990 12:02

This note is cross posted in the DECWINDOWS, CSTEXT and ULTRIX notesfile

I tried the Compound String Text widget on UWS v4.0 FT2 and I got the
follwing problem: 
Using a compund string with a different character set in each segment
I managed to display it with two different font in a label widget
but not in the Text widget. 
  The whole CS string is displayed with the font of the first segment.
Is it a bug or a (lack of)feature of CSText ?

Thanks for any help,
Bernard


/* %M%  %I%  %E% */
/* simplest example of pushbuttom,  CS text widget action table and
   input focus , using the High level routines */
/* author: Bernard Laforgue  Digital @VBO */
#include <stdio.h>
#ifdef VMS
#include <decw$include/DECwDwtApplProg.h>
#else
#include <X11/DECwDwtApplProg.h>
#endif
static void window_exposed();
static void helloworld_button_activate();
static void return_key();
static DwtCallback callback_arg[2];
static char translation[] = "<Key>0xff0d: return_key()\n\
<Key>0xff8d: return_key()";
static XtActionsRec action_table[] = { 
    {"return_key", (XtActionProc)return_key},
    {NULL, NULL}
};
Widget label, button, text1, text2;
int main(argc, argv)
unsigned int argc;
char **argv;
{
    Widget toplevel, helloworldmain, dialogw, workw;
    DwtCompString line1, line2;
    DwtFontList  font_list;
    Arg arglist[2];
    /******** Set up the User Interface **********/
    toplevel = XtInitialize("hellotext","Helloclass", NULL, 0, &argc, argv);
    XtSetArg (arglist[0], XtNallowShellResize, TRUE) ;
    XtSetValues (toplevel, arglist, 1) ;
    helloworldmain = DwtMainWindow( toplevel, "mainwin", 0, 0, 170, 155);
    dialogw = DwtDialogBox( helloworldmain, "dialogw", TRUE,0,0,
		    DwtLatin1String("Hi v%I%"), DwtWorkarea, 0, 0);

    /* create the font list */
    font_list = DwtCreateFontList(XLoadQueryFont(XtDisplay(toplevel),
	  "-*-Symbol-Medium-R-Normal--*-140-*-*-P-*-*-*"), 35); /* symbol */;
    font_list = DwtAddFontList(font_list, XLoadQueryFont(XtDisplay(toplevel),
	  "-*-Times-Medium-R-Normal--*-140-*-*-P-*-*-*"), 1); /* ISO Latin 1 */;
    XtSetArg(arglist[0], DwtNfont,	font_list);

    /* create the compound strings */
    line1 = DwtCStrcat(DwtCSString("line 1: ", 1, False),
		       DwtCSString("abcdefg", 35, False));
    line2 = DwtCStrcat(DwtCSString("line 2: ",35, False),
		       DwtCSString("hijklmn",  1, False));
    label = DwtLabel( dialogw, "label", 0, 0, line1, 0);
    XtSetValues (label, arglist, 1) ;
    XtManageChild(label);

    XtAddActions(action_table, 1);
    text1 = DwtCSText(dialogw, "text", 0, 40, 20, 1, line1);
    XtSetValues (text1, arglist, 1) ;
    DwtCSTextSetEditable (text1, TRUE);
    XtOverrideTranslations(text1, XtParseTranslationTable(translation));
    XtManageChild(text1);
    text2 = DwtCSText(dialogw, "text", 0, 55, 20, 1, line2);
    XtSetValues (text2, arglist, 1) ;
    DwtCSTextSetEditable (text2, FALSE);
    /*
    XtOverrideTranslations(text2, XtParseTranslationTable(translation));
    */
    XtManageChild(text2);
    callback_arg[0].proc = helloworld_button_activate;
    callback_arg[0].tag = 0;
    callback_arg[1].proc = NULL;
    
    button = DwtPushButton( dialogw, "button", 15, 70,
	     DwtLatin1String("Hello\nWorld!"), callback_arg, 0);
    XtSetValues (button, arglist, 1) ;
    XtManageChild( button);
    /* dummy work area, just to get an expose event */
    callback_arg[0].proc = window_exposed;
    workw = DwtWindow(helloworldmain, "workw", 0, 0, 10, 2, callback_arg);
    XtManageChild( workw);
    XtManageChild( dialogw); /* must be here to override workw */
    XtManageChild( helloworldmain);
    XtRealizeWidget( toplevel);
     /* XtInstallAccelerators(text, button); */
    XtMainLoop();
    return (0);
}

static void window_exposed( widget, tag, callback_data)
    Widget widget;
    char *tag;
    DwtAnyCallbackStruct *callback_data;
{
    /* set the input focus to the first text widget */
    /* this will grab the focus automatically to this aplication,
       at its creation without anay action on the mouse */
    XtCallAcceptFocus(text1, CurrentTime);
}

static void helloworld_button_activate( widget, tag, callback_data)
    Widget widget;
    char *tag;
    DwtAnyCallbackStruct *callback_data;
{
Arg arglist[2];
static int call_count = 0;
call_count += 1 ;
switch ( call_count)
    {
    case 1:
        XtSetArg( arglist[0], DwtNlabel,
            DwtLatin1String("Goodbye\nWorld!"));
        XtSetValues( widget, arglist, 1);
        XtSetArg( arglist[0], DwtNlabel,
            DwtLatin1String("Press button to exit."));
        XtSetValues( label, arglist, 1);
        break ;
    case 2:
        exit(1);
        break ;
    }
}

static void return_key (widget, tag, callback_data)
    Widget widget;
    char *tag;
    DwtAnyCallbackStruct *callback_data;
{
    DwtCompString content;
    Arg arglist[1];
    Widget w;

    /* copies the content of the text to the pushbutton */
    content = DwtCSTextGetString(widget);
    XtSetArg( arglist[0], DwtNlabel, content);
    XtSetValues(button, arglist, 1);
    XFree(content);

    /* set the input focus to the other text widget */
    w = (widget==text1)? text2 : text1;
    XtCallAcceptFocus(w, CurrentTime);
}

    Try creating the CSTEXT widget with the correct fontlist rather
    than calling XtSetValues after creating it.
    
    Leo

      Could someone point me to the CSTEXT conference (and place the
      pointer in the "Related Conferences" directory).  Thanks.

      Bill

    When Tim Greenwood created ABSZK::CSTEXT he wasn't about to publicize
    it, not just yet anyway.  However, mentioning its location here is not
    a big deal, I don't think.  I'll leave it up to Tim to decide whether
    it's ready for prime time and the Related Conferences topic.
    
    --Simon
    

    Re: <<< Note 2854.1 by LEOVAX::TREGGIARI >>>
		-< Just a guess... >-

    > Try creating the CSTEXT widget with the correct fontlist rather
    > than calling XtSetValues after creating it.
    
    > Leo

    I was thinking of using this capability of the CStext widget myself, so
    when I saw this note, I started to do some experimenting.  I can't get
    it to work either.  As you suggested, Leo, I set the font list at
    widget creation time (i.e. with UIL), but this doesn't help.  As
    mentioned in the base note, it works fine with a label widget.

    Any other ideas?

    The CSTEXT conference on ABSZK was created as a temporary conference to
    discuss one issue which is now resolved. The CSTEXT widget is a full
    part of the toolkit and any questions on it should be posted in one of
    the other DECwindows conferences. DECWTOOLKIT looks like a good
    candidate.
    
    Tim