X-Git-Url: https://git.artsoft.org/?p=rocksndiamonds.git;a=blobdiff_plain;f=src%2Flibgame%2Fgadgets.c;h=daa045eb4892dd4ea28b98d9def164ad143bf12d;hp=75d0a8558970bcb8b2da5ba4f74ec5c4a25e85c2;hb=3b6f0ed7443f58031823df29c1a7bd89d7d63a8d;hpb=791c71ebdff49bada6e1becaca5482af8804d645

diff --git a/src/libgame/gadgets.c b/src/libgame/gadgets.c
index 75d0a855..daa045eb 100644
--- a/src/libgame/gadgets.c
+++ b/src/libgame/gadgets.c
@@ -231,15 +231,31 @@ static void DrawGadget(struct GadgetInfo *gi, boolean pressed, boolean direct)
     case GD_TYPE_NORMAL_BUTTON:
     case GD_TYPE_CHECK_BUTTON:
     case GD_TYPE_RADIO_BUTTON:
+
       BlitBitmapOnBackground(gd->bitmap, drawto,
 			     gd->x, gd->y, gi->width, gi->height,
 			     gi->x, gi->y);
+
       if (gi->deco.design.bitmap)
-	BlitBitmap(gi->deco.design.bitmap, drawto,
-		   gi->deco.design.x, gi->deco.design.y,
-		   gi->deco.width, gi->deco.height,
-		   gi->x + gi->deco.x + (pressed ? gi->deco.xshift : 0),
-		   gi->y + gi->deco.y + (pressed ? gi->deco.yshift : 0));
+      {
+	// make sure that decoration does not overlap gadget border
+	int deco_x = gi->deco.x + (pressed ? gi->deco.xshift : 0);
+	int deco_y = gi->deco.y + (pressed ? gi->deco.yshift : 0);
+	int deco_width  = MIN(gi->deco.width,  gi->width  - deco_x);
+	int deco_height = MIN(gi->deco.height, gi->height - deco_y);
+
+	if (gi->deco.masked)
+	  BlitBitmapMasked(gi->deco.design.bitmap, drawto,
+			   gi->deco.design.x, gi->deco.design.y,
+			   deco_width, deco_height,
+			   gi->x + deco_x, gi->y + deco_y);
+	else
+	  BlitBitmap(gi->deco.design.bitmap, drawto,
+		     gi->deco.design.x, gi->deco.design.y,
+		     deco_width, deco_height,
+		     gi->x + deco_x, gi->y + deco_y);
+      }
+
       break;
 
     case GD_TYPE_TEXT_BUTTON:
@@ -985,6 +1001,10 @@ static void HandleGadgetTags(struct GadgetInfo *gi, int first_tag, va_list ap)
 	gi->deco.yshift = va_arg(ap, int);
 	break;
 
+      case GDI_DECORATION_MASKED:
+	gi->deco.masked = (boolean)va_arg(ap, int);
+	break;
+
       case GDI_EVENT_MASK:
 	gi->event_mask = va_arg(ap, unsigned int);
 	break;