Implement highlighting in engine output by through generic method

[xboard.git] / nengineoutput.c

diff --git a/nengineoutput.c b/nengineoutput.c
index 31bdbe5..7b013c0 100644 (file)
--- a/nengineoutput.c
+++ b/nengineoutput.c
@@ -52,6 +52,7 @@ extern char *getenv();
 #include "frontend.h"
 #include "backend.h"
 #include "dialogs.h"
+#include "menus.h"
 #include "engineoutput.h"
 #include "gettext.h"
 
@@ -68,6 +69,9 @@ extern char *getenv();
 int  windowMode = 1;
 
 char *mem1, *mem2; // dummies, as this dialog can never be OK'ed
+static int currentPV, highTextStart[2], highTextEnd[2];
+
+int MemoProc P((Option *opt, int n, int x, int y, char *text, int index));
 
 Option engoutOptions[] = {
 {  0,  LL|T2T,           17, NULL, NULL, NULL, NULL, Label, " " },
@@ -75,17 +79,48 @@ Option engoutOptions[] = {
 {  0,     T2T|SAME_ROW,  30, NULL, NULL, NULL, NULL, Label, " " },
 {  0, R2R|T2T|SAME_ROW, 188, NULL, NULL, NULL, NULL, Label, N_("move") },
 {  0,  RR|T2T|SAME_ROW,  80, NULL, NULL, NULL, NULL, Label, N_("NPS") },
-{200, T_VSCRL | T_TOP,  500, NULL, (void*) &mem1, "", NULL, TextBox, "" },
+{200, T_VSCRL | T_TOP,  500, NULL, (void*) &mem1, "", (char**) MemoProc, TextBox, "" },
 {  0,         0,         0, NULL, NULL, "", NULL, Break , "" },
 {  0,  LL|T2T,           17, NULL, NULL, NULL, NULL, Label, " " },
 {  0, L2L|T2T|SAME_ROW, 163, NULL, NULL, NULL, NULL, Label, N_("engine name") },
 {  0,     T2T|SAME_ROW,  30, NULL, NULL, NULL, NULL, Label, " " },
 {  0, R2R|T2T|SAME_ROW, 188, NULL, NULL, NULL, NULL, Label, N_("move") },
 {  0,  RR|T2T|SAME_ROW,  80, NULL, NULL, NULL, NULL, Label, N_("NPS") },
-{200, T_VSCRL | T_TOP,  500, NULL, (void*) &mem2, "", NULL, TextBox, "" },
+{200, T_VSCRL | T_TOP,  500, NULL, (void*) &mem2, "", (char**) MemoProc, TextBox, "" },
 {   0,      NO_OK,       0, NULL, NULL, "", NULL, EndMark , "" }
 };
 
+int
+MemoProc (Option *opt, int n, int x, int y, char *text, int index)
+{   // user callback for mouse events in memo
+    static int pressed; // keep track of button 3 state
+    int start, end, currentPV = (opt != &engoutOptions[5]);
+
+    switch(n) {
+      case 0: // pointer motion
+       if(!pressed) return FALSE; // only motion with button 3 down is of interest
+       MovePV(x, y, 500/*lineGap + BOARD_HEIGHT * (squareSize + lineGap)*/);
+       break;
+      case 3: // press button 3
+       pressed = 1;
+       if(LoadMultiPV(x, y, text, index, &start, &end, currentPV)) {
+           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;
+      default:
+       return FALSE; // not meant for us; do regular event handler
+    }
+    return TRUE;
+}
+
 void
 SetIcon (int which, int field, int nIcon)
 {   // first call into xengineoutput.c to pick up icon pixmap
@@ -153,7 +188,7 @@ EngineOutputDialogExists ()
 }
 
 void
-EngineOutputProc (Widget w, XEvent *event, String *prms, Cardinal *nprms)
+EngineOutputProc ()
 {
   if (!PopDown(EngOutDlg)) EngineOutputPopUp();
 }