Indicate squares a lifted piece can legally move to

[xboard.git] / winboard / winboard.c

diff --git a/winboard/winboard.c b/winboard/winboard.c
index c3dcf97..24edde8 100644 (file)
--- a/winboard/winboard.c
+++ b/winboard/winboard.c
@@ -191,6 +191,7 @@ static HBITMAP pieceBitmap[3][(int) BlackPawn]; /* [HGM] nr of bitmaps referred
 static HBRUSH lightSquareBrush, darkSquareBrush,\r
   blackSquareBrush, /* [HGM] for band between board and holdings */\r
   explodeBrush,     /* [HGM] atomic */\r
+  markerBrush,      /* [HGM] markers */\r
   whitePieceBrush, blackPieceBrush, iconBkgndBrush /*, outlineBrush*/;\r
 static POINT gridEndpoints[(BOARD_RANKS + BOARD_FILES + 2) * 2];\r
 static DWORD gridVertexCounts[BOARD_RANKS + BOARD_FILES + 2];\r
@@ -1853,6 +1854,7 @@ InitDrawingColors()
   blackPieceBrush = CreateSolidBrush(blackPieceColor);\r
   iconBkgndBrush = CreateSolidBrush(GetSysColor(COLOR_BACKGROUND));\r
   explodeBrush = CreateSolidBrush(highlightSquareColor); // [HGM] atomic\r
+  markerBrush = CreateSolidBrush(premoveHighlightColor); // [HGM] markers\r
   /* [AS] Force rendering of the font-based pieces */\r
   if( fontBitmapSquareSize > 0 ) {\r
     fontBitmapSquareSize = 0;\r
@@ -3312,6 +3314,18 @@ HDCDrawPosition(HDC hdc, BOOLEAN repaint, Board board)
     DrawHighlightsOnDC(hdcmem);\r
     DrawBoardOnDC(hdcmem, board, tmphdc);\r
   }\r
+  for (row = 0; row < BOARD_HEIGHT; row++) {\r
+    for (column = 0; column < BOARD_WIDTH; column++) {\r
+       if (marker[row][column]) { // marker changes only occur with full repaint!\r
+           HBRUSH oldBrush = SelectObject(hdcmem, \r
+                       marker[row][column] == 2 ? markerBrush : explodeBrush);\r
+           SquareToPos(row, column, &x, &y);\r
+           Ellipse(hdcmem, x + squareSize/4, y + squareSize/4,\r
+                         x + 3*squareSize/4, y + 3*squareSize/4);\r
+           SelectObject(hdcmem, oldBrush);\r
+       }\r
+    }\r
+  }\r
   if(logoHeight) {\r
        HBITMAP whiteLogo = (HBITMAP) first.programLogo, blackLogo = (HBITMAP) second.programLogo;\r
        if(appData.autoLogo) {\r