Display PV from Engine-Output window (XBoard)

[xboard.git] / xengineoutput.c

diff --git a/xengineoutput.c b/xengineoutput.c
index de62d98..2d2a9a7 100644 (file)
--- a/xengineoutput.c
+++ b/xengineoutput.c
@@ -131,6 +131,7 @@ static int engineOutputDialogUp;
 
 /* Module variables */
 int  windowMode = 1;
+static int currentPV, highTextStart[2], highTextEnd[2];
 
 typedef struct {
     char * name;
@@ -192,8 +193,11 @@ void InsertIntoMemo( int which, char * text, int where )
        t.ptr = text; t.firstPos = 0; t.length = strlen(text); t.format = XawFmt8Bit;
        edit = XtNameToWidget(engineOutputShell, which ? "*form2.text" : "*form.text");
        XawTextReplace(edit, where, where, &t);
-//     XtSetArg(arg, XtNstring, (XtArgVal) text);
-//     XtSetValues(outputField[which][nMemo], &arg, 1);
+       if(where < highTextStart[which]) { // [HGM] multiPVdisplay: move highlighting
+           int len = strlen(text);
+           highTextStart[which] += len; highTextEnd[which] += len;
+           XawTextSetSelection( outputField[which][nMemo], highTextStart[which], highTextEnd[which] );
+       }
 }
 
 void SetIcon( int which, int field, int nIcon )
@@ -227,7 +231,38 @@ Boolean SendPositionSelection(Widget w, Atom *selection, Atom *target,
 void SetFocus(Widget w, XtPointer data, XEvent *event, Boolean *b); // from xoptions.c
 
 char memoTranslations[] =
-":Ctrl<Key>c: CopyMemoProc() \n";
+":Ctrl<Key>c: CopyMemoProc() \n \
+<Btn3Motion>: HandlePV() \n \
+<Btn3Down>: select-start() SelectPV() \n \
+<Btn3Up>: extend-end() StopPV() \n";
+
+void
+SelectPV (Widget w, XEvent * event, String * params, Cardinal * nParams)
+{      // [HGM] pv: translate click to PV line, and load it for display
+       String val;
+       int start, end, memo, j;
+       XawTextPosition index, dummy;
+       int x, y;
+       Arg arg;
+
+       x = event->xmotion.x; y = event->xmotion.y;
+       currentPV = (w == outputField[1][nMemo]);
+       XawTextGetSelectionPos(w, &index, &dummy);
+       XtSetArg(arg, XtNstring, &val);
+       XtGetValues(w, &arg, 1);
+       if(LoadMultiPV(x, y, val, index, &start, &end)) {
+           XawTextSetSelection( outputField[currentPV][nMemo], start, end );
+           highTextStart[currentPV] = start; highTextEnd[currentPV] = end;
+       }
+}
+
+void
+StopPV (Widget w, XEvent * event, String * params, Cardinal * nParams)
+{      // [HGM] pv: on right-button release, stop displaying PV
+        XawTextUnsetSelection( w );
+        highTextStart[currentPV] = highTextEnd[currentPV] = 0;
+        UnLoadPV();
+}
 
 static void
 MemoCB(Widget w, XtPointer client_data, Atom *selection,