From 72f29984231db32d8fa942538bc3c6ddaecd3180 Mon Sep 17 00:00:00 2001
From: H.G. Muller <h.g.muller@hccnet.nl>
Date: Tue, 19 Jan 2010 20:15:49 +0100
Subject: [PATCH] Right-click refactoring: step III

Let WinBoard call RightClick in back-end, and delete the duplicate code
it had for this, after rescuing the front-end bits, and let the letter
act depending on the result returned by RightClick.
---
 backend.c           |   20 +++++++++++++-------
 winboard/winboard.c |   45 +++++++++------------------------------------
 xboard.c            |    1 +
 3 files changed, 23 insertions(+), 43 deletions(-)

diff --git a/backend.c b/backend.c
index e0e1ab2..cc58afe 100644
--- a/backend.c
+++ b/backend.c
@@ -5943,14 +5943,19 @@ void LeftClick(ClickType clickType, int xPix, int yPix)
 
 int RightClick(ClickType action, int x, int y, int *fromX, int *fromY)
 {   // front-end-free part taken out of PieceMenuPopup
-    int whichMenu;
+    int whichMenu; int xSqr, ySqr;
 
+    xSqr = EventToSquare(x, BOARD_WIDTH);
+    ySqr = EventToSquare(y, BOARD_HEIGHT);
     if (action == Release) UnLoadPV(); // [HGM] pv
     if (action != Press) return -2;
     switch (gameMode) {
-      case EditPosition:
       case IcsExamining:
-	whichMenu = 0;
+	if(xSqr < BOARD_LEFT || xSqr >= BOARD_RGHT) return -1;
+      case EditPosition:
+	if (xSqr == BOARD_LEFT-1 || xSqr == BOARD_RGHT) return -1;
+	if (xSqr < 0 || ySqr < 0) return -1;
+	whichMenu = 0; // edit-position menu
 	break;
       case IcsObserving:
 	if(!appData.icsEngineAnalyze) return -1;
@@ -5964,23 +5969,24 @@ int RightClick(ClickType action, int x, int y, int *fromX, int *fromY)
       case TwoMachinesPlay: // [HGM] pv: use for showing PV
 	if (!appData.dropMenu) {
 	  LoadPV(x, y);
-	  return -1;
+	  return 2; // flag front-end to grab mouse events
 	}
 	if(gameMode == TwoMachinesPlay || gameMode == AnalyzeMode ||
            gameMode == AnalyzeFile || gameMode == IcsObserving) return -1;
       case EditGame:
       noZip:
+	if (xSqr < 0 || ySqr < 0) return -1;
 	if (!appData.dropMenu || appData.testLegality &&
 	    gameInfo.variant != VariantBughouse &&
 	    gameInfo.variant != VariantCrazyhouse) return -1;
-	whichMenu = 1;
+	whichMenu = 1; // drop menu
 	break;
       default:
 	return -1;
     }
 
-    if (((*fromX = EventToSquare(x, BOARD_WIDTH)) < 0) ||
-	((*fromY = EventToSquare(y, BOARD_HEIGHT)) < 0)) {
+    if (((*fromX = xSqr) < 0) ||
+	((*fromY = ySqr) < 0)) {
 	*fromX = *fromY = -1;
 	return -1;
     }
diff --git a/winboard/winboard.c b/winboard/winboard.c
index d790116..81d5d03 100644
--- a/winboard/winboard.c
+++ b/winboard/winboard.c
@@ -3652,7 +3652,7 @@ void DragPieceEnd(int x, int y)
 VOID
 MouseEvent(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
 {
-  int x, y;
+  int x, y, menuNr;
   POINT pt;
   static int recursive = 0;
   HMENU hmenu;
@@ -3760,7 +3760,7 @@ MouseEvent(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
   case WM_MBUTTONUP:
   case WM_RBUTTONUP:
     ReleaseCapture();
-    UnLoadPV();
+    RightClick(Release, pt.x - boardRect.left, pt.y - boardRect.top, &fromX, &fromY);
     break;
  
   case WM_MBUTTONDOWN:
@@ -3785,14 +3785,9 @@ MouseEvent(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
     }
     DrawPosition(TRUE, NULL);
 
-    switch (gameMode) {
-    case IcsExamining:
-      if(x < BOARD_LEFT || x >= BOARD_RGHT) break;
-    case EditPosition:
-      if (x == BOARD_LEFT-1 || x == BOARD_RGHT) break;
-      if (x < 0 || y < 0) break;
-      fromX = x;
-      fromY = y;
+    menuNr = RightClick(Press, pt.x - boardRect.left, pt.y - boardRect.top, &fromX, &fromY);
+    switch (menuNr) {
+    case 0:
       if (message == WM_MBUTTONDOWN) {
 	buttonCount = 3;  /* even if system didn't think so */
 	if (wParam & MK_SHIFT) 
@@ -3809,35 +3804,13 @@ MouseEvent(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
             MenuPopup(hwnd, pt, LoadMenu(hInst, "ShogiPieceMenu"), -1);
       }
       break;
-    case IcsObserving:
-      if(!appData.icsEngineAnalyze) break;
-    case IcsPlayingWhite:
-    case IcsPlayingBlack:
-      if(!appData.zippyPlay) goto noZip;
-    case MachinePlaysWhite:
-    case MachinePlaysBlack:
-    case TwoMachinesPlay:
-    case AnalyzeMode:
-    case AnalyzeFile:
-      if (!appData.dropMenu) {
-        SetCapture(hwndMain);
-        LoadPV(pt.x - boardRect.left, pt.y - boardRect.top);
-        break;
-      }
-      if(gameMode == TwoMachinesPlay || gameMode == AnalyzeMode ||
-         gameMode == AnalyzeFile || gameMode == IcsObserving) break;
-    case EditGame:
-    noZip:
-      if (x < 0 || y < 0) break;
-      if (!appData.dropMenu || appData.testLegality &&
-  	  gameInfo.variant != VariantBughouse &&
-  	  gameInfo.variant != VariantCrazyhouse) break;
-      fromX = x;
-      fromY = y;
+    case 2:
+      SetCapture(hwndMain);
+      break;
+    case 1:
       hmenu = LoadMenu(hInst, "DropPieceMenu");
       SetupDropMenu(hmenu);
       MenuPopup(hwnd, pt, hmenu, -1);
-      break;
     default:
       break;
     }
diff --git a/xboard.c b/xboard.c
index cbe40e1..581206c 100644
--- a/xboard.c
+++ b/xboard.c
@@ -3722,6 +3722,7 @@ void PieceMenuPopup(w, event, params, num_params)
     switch(menuNr) {
       case 0: whichMenu = params[0]; break;
       case 1: SetupDropMenu(); whichMenu = "menuD"; break;
+      case 2:
       case -1: if (errorUp) ErrorPopDown();
       default: return;
     }
-- 
1.7.0.4