Implement highlighting in engine output by through generic method

HighlightMove was made generally available for all text. It is now just a
wrapper for the generic HighlightText, and could be moved to the back-end.
(This requires the initialization to be widget specific, and the flag
indicating it has been done is now stored in the Option.min field.)

diff --git a/dialogs.h b/dialogs.h
index 3032dcc..49df73d 100644 (file)
--- a/dialogs.h
+++ b/dialogs.h
@@ -137,6 +137,7 @@ int GenericReadout P((Option *currentOption, int selected));
 int PopDown P((DialogClass n));
 void MarkMenu P((char *item, int dlgNr));
 int AppendText P((Option *opt, char *s));
+void HighlightText P((Option *opt, int from, int to, Boolean highlight));
 void SetColor P((char *colorName, Option *box));
 //void ColorChanged P((Widget w, XtPointer data, XEvent *event, Boolean *b));
 void SetInsertPos P((Option *opt, int pos));

diff --git a/nengineoutput.c b/nengineoutput.c
index dc84aa4..7b013c0 100644 (file)
--- a/nengineoutput.c
+++ b/nengineoutput.c
@@ -104,14 +104,14 @@ MemoProc (Option *opt, int n, int x, int y, char *text, int index)
       case 3: // press button 3
        pressed = 1;
        if(LoadMultiPV(x, y, text, index, &start, &end, currentPV)) {
-#ifdef TODO_GTK
-           XawTextSetSelection( w, start, end );
-#endif
            highTextStart[currentPV] = start; highTextEnd[currentPV] = end;
+           HighlightText(&engoutOptions[currentPV ? 12 : 5], start, end, TRUE);
        }
        break;
       case -3: // release button 3
        pressed = 0;
+        if(highTextStart[currentPV] != highTextEnd[currentPV])
+            HighlightText(&engoutOptions[currentPV ? 12 : 5], highTextStart[currentPV], highTextEnd[currentPV], FALSE);
         highTextStart[currentPV] = highTextEnd[currentPV] = 0;
         UnLoadPV();
        break;

diff --git a/nhistory.c b/nhistory.c
index cefb706..9d6a073 100644 (file)
--- a/nhistory.c
+++ b/nhistory.c
@@ -62,6 +62,12 @@ AppendToHistoryMemo (char * text, int bold, int colorNr)
     return AppendText(&historyOptions[0], text); // for now ignore bold & color stuff, as Xaw cannot handle that
 }
 
+void
+HighlightMove (int from, int to, Boolean highlight)
+{
+    HighlightText (&historyOptions[0], from, to, highlight);
+}
+
 char *historyText;
 
 int

diff --git a/xaw/xhistory.c b/xaw/xhistory.c
index 51ebf5c..d46206d 100644 (file)
--- a/xaw/xhistory.c
+++ b/xaw/xhistory.c
@@ -71,13 +71,6 @@ extern Option historyOptions[];
 
 // ------------- low-level front-end actions called by MoveHistory back-end -----------------
 
-void
-HighlightMove (int from, int to, Boolean highlight)
-{
-    if(highlight)
-       XawTextSetSelection( historyOptions[0].handle, from, to ); // for lack of a better method, use selection for highighting
-}
-
 // the bold argument says 0 = normal, 1 = bold typeface
 // the colorNr argument says 0 = font-default, 1 = gray
 void

diff --git a/xaw/xoptions.c b/xaw/xoptions.c
index 7e622a7..77d7358 100644 (file)
--- a/xaw/xoptions.c
+++ b/xaw/xoptions.c
@@ -267,6 +267,10 @@ SelectedListBoxItem (Option *opt)
 void
 HighlightText (Option *opt, int start, int end, Boolean on)
 {
+    if(on)
+       XawTextSetSelection( opt->handle, start, end ); // for lack of a better method, use selection for highighting
+    else
+       XawTextSetSelection( opt->handle, 0, 0 );
 }
 
 void

diff --git a/xengineoutput.c b/xengineoutput.c
index 1c86de3..4d94616 100644 (file)
--- a/xengineoutput.c
+++ b/xengineoutput.c
@@ -148,9 +148,6 @@ InsertIntoMemo (int which, char * text, int where)
     if(where < highTextStart[which]) { // [HGM] multiPVdisplay: move highlighting
        int len = strlen(text);
        highTextStart[which] += len; highTextEnd[which] += len;
-#ifdef TODO_GTK
-       XawTextSetSelection( edit, highTextStart[which], highTextEnd[which] );
-#endif
     }
 }
 

diff --git a/xhistory.c b/xhistory.c
index cddf04e..0551ce1 100644 (file)
--- a/xhistory.c
+++ b/xhistory.c
@@ -49,22 +49,6 @@ extern Option historyOptions[];
 // ------------- low-level front-end actions called by MoveHistory back-end -----------------
 
 void
-HighlightMove (int from, int to, Boolean highlight)
-{
-    static int init = 0;
-    static GtkTextIter start, end;
-
-    if(!init) {
-       init = 1;
-       gtk_text_buffer_create_tag(historyOptions[0].handle, "highlight", "background", "yellow", NULL);
-       gtk_text_buffer_create_tag(historyOptions[0].handle, "normal", "background", "white", NULL);
-    }
-    gtk_text_buffer_get_iter_at_offset(historyOptions[0].handle, &start, from);
-    gtk_text_buffer_get_iter_at_offset(historyOptions[0].handle, &end, to);
-    gtk_text_buffer_apply_tag_by_name(historyOptions[0].handle, highlight ? "highlight" : "normal", &start, &end);
-}
-
-void
 ScrollToCurrent (int caretPos)
 {
     static GtkTextIter iter;

diff --git a/xoptions.c b/xoptions.c
index c213bbc..5616840 100644 (file)
--- a/xoptions.c
+++ b/xoptions.c
@@ -546,6 +546,22 @@ ICSKeyEvent(GtkWidget *widget, GdkEventKey *event)
     }
 }
 
+void
+HighlightText (Option *opt, int from, int to, Boolean highlight)
+{
+#   define INIT 0x8000
+    static GtkTextIter start, end;
+
+    if(!(opt->min & INIT)) {
+       opt->min |= INIT; // each memo its own init flag!
+       gtk_text_buffer_create_tag(opt->handle, "highlight", "background", "yellow", NULL);
+       gtk_text_buffer_create_tag(opt->handle, "normal", "background", "white", NULL);
+    }
+    gtk_text_buffer_get_iter_at_offset(opt->handle, &start, from);
+    gtk_text_buffer_get_iter_at_offset(opt->handle, &end, to);
+    gtk_text_buffer_apply_tag_by_name(opt->handle, highlight ? "highlight" : "normal", &start, &end);
+}
+
 static gboolean
 MemoEvent(GtkWidget *widget, GdkEvent *event, gpointer gdata)
 {   // handle mouse clicks on text widgets that need it