彻底改版2.0

third/3rd_qwt/qwt_pixel_matrix.cpp

@@ -0,0 +1,51 @@
+/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
+ * Qwt Widget Library
+ * Copyright (C) 1997   Josef Wilgen
+ * Copyright (C) 2002   Uwe Rathmann
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the Qwt License, Version 1.0
+ *****************************************************************************/
+
+#include "qwt_pixel_matrix.h"
+
+/*!
+  \brief Constructor
+
+  \param rect Bounding rectangle for the matrix
+*/
+QwtPixelMatrix::QwtPixelMatrix( const QRect& rect ):
+    QBitArray( qMax( rect.width() * rect.height(), 0 ) ),
+    d_rect( rect )
+{
+}
+
+//! Destructor
+QwtPixelMatrix::~QwtPixelMatrix()
+{
+}
+
+/*!
+    Set the bounding rectangle of the matrix
+
+    \param rect Bounding rectangle
+
+    \note All bits are cleared
+ */
+void QwtPixelMatrix::setRect( const QRect& rect )
+{
+    if ( rect != d_rect )
+    {
+        d_rect = rect;
+        const int sz = qMax( rect.width() * rect.height(), 0 );
+        resize( sz );
+    }
+
+    fill( false );
+}
+
+//! \return Bounding rectangle
+QRect QwtPixelMatrix::rect() const
+{
+    return d_rect;
+}