X-Git-Url: https://git.cweiske.de/enigma2.git/blobdiff_plain/3bad22d5566624804a73b3791980bab2d84c8266..94284f21b07f1756120e8b6f5dd53e485a9ff66d:/lib/gdi/erect.h

diff --git a/lib/gdi/erect.h b/lib/gdi/erect.h
index 9eaa7906..d95b8c0f 100644
--- a/lib/gdi/erect.h
+++ b/lib/gdi/erect.h
@@ -11,7 +11,8 @@ class eRect // rectangle class
 {
 	friend class gRegion;
 public:
-	eRect()	{ x1 = y1 = x2 = y2 = 0; }
+			/* eRect() constructs an INVALID rectangle. */
+	eRect()	{ x1 = y1 = 0; x2 = y2 = -1; }
 	eRect( const ePoint &topleft, const ePoint &bottomright );
 
 	// we use this contructor very often... do it inline...
@@ -25,9 +26,8 @@ public:
 
 	eRect( int left, int top, int width, int height );
 
-	bool isNull()	const;
-	bool isEmpty()	const;
-	bool isValid()	const;
+	bool empty()	const;
+	bool valid()	const;
 	eRect normalize()	const;
 
 	int left()	const;
@@ -52,6 +52,18 @@ public:
 	ePoint bottomRight() const;
 	ePoint topRight()	 const;
 	ePoint bottomLeft()	 const;
+
+		/* the sole intention of these functions
+		   is to allow painting frames without 
+		   messing around with the coordinates.
+		   they point to the last pixel included
+		   in the rectangle (which means that 1 is
+		   subtracted from the right and bottom 
+		   coordinates  */
+	ePoint topLeft1()	 const;
+	ePoint bottomRight1() const;
+	ePoint topRight1()	 const;
+	ePoint bottomLeft1()	 const;
 	ePoint center()	 const;
 
 	void rect( int *x, int *y, int *w, int *h ) const;
@@ -103,7 +115,10 @@ public:
 
 	friend bool operator==( const eRect &, const eRect & );
 	friend bool operator!=( const eRect &, const eRect & );
-
+	
+	static eRect emptyRect() { return eRect(0, 0, 0, 0); }
+	static eRect invalidRect() { return eRect(); }
+	
 private:
 	int x1;
 	int y1;
@@ -115,28 +130,6 @@ bool operator==( const eRect &, const eRect & );
 bool operator!=( const eRect &, const eRect & );
 
 
-/*****************************************************************************
-  eRect stream functions
- *****************************************************************************/
-namespace std
-{
-	inline ostream &operator<<( ostream & s, const eRect & r )
-	{
-		s << r.left()  << r.top()
-		  << r.right() << r.bottom();
-
-		return s;
-	}
-
-	inline istream &operator>>( istream & s, eRect & r )
-	{
-		int x1, y1, x2, y2;
-		s >> x1 >> y1 >> x2 >> y2;
-		r.setCoords( x1, y1, x2, y2 );
-		return s;
-	}
-}
-
 /*****************************************************************************
   eRect inline member functions
  *****************************************************************************/
@@ -149,13 +142,10 @@ inline eRect::eRect( int left, int top, int width, int height )
 	y2 = top+height;
 }
 
-inline bool eRect::isNull() const
-{ return x2 == x1 && y2 == y1; }
+inline bool eRect::empty() const
+{ return x1 == x2 || y1 == y2; }
 
-inline bool eRect::isEmpty() const
-{ return x1 >= x2 || y1 >= y2; }
-
-inline bool eRect::isValid() const
+inline bool eRect::valid() const
 { return x1 <= x2 && y1 <= y2; }
 
 inline int eRect::left() const
@@ -218,6 +208,18 @@ inline ePoint eRect::topRight() const
 inline ePoint eRect::bottomLeft() const
 { return ePoint(x1, y2); }
 
+inline ePoint eRect::topLeft1() const
+{ return ePoint(x1, y1); }
+
+inline ePoint eRect::bottomRight1() const
+{ return ePoint(x2-1, y2-1); }
+
+inline ePoint eRect::topRight1() const
+{ return ePoint(x2-1, y1); }
+
+inline ePoint eRect::bottomLeft1() const
+{ return ePoint(x1, y2-1); }
+
 inline ePoint eRect::center() const
 { return ePoint((x1+x2)/2, (y1+y2)/2); }