1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "ui/base/range/range.h" 6 7 #include <limits> 8 9 #include "base/logging.h" 10 11 namespace ui { 12 13 Range::Range(const CHARRANGE& range, LONG total_length) { 14 // Check if this is an invalid range. 15 if (range.cpMin == -1 && range.cpMax == -1) { 16 *this = InvalidRange(); 17 } else { 18 DCHECK_GE(range.cpMin, 0); 19 set_start(range.cpMin); 20 // {0,-1} is the "whole range" but that doesn't mean much out of context, 21 // so use the |total_length| parameter. 22 if (range.cpMax == -1) { 23 DCHECK_EQ(0, range.cpMin); 24 DCHECK_NE(-1, total_length); 25 set_end(total_length); 26 } else { 27 set_end(range.cpMax); 28 } 29 } 30 } 31 32 CHARRANGE Range::ToCHARRANGE() const { 33 CHARRANGE r = { -1, -1 }; 34 if (!IsValid()) 35 return r; 36 37 const LONG kLONGMax = std::numeric_limits<LONG>::max(); 38 CHECK_LE(static_cast<LONG>(start()), kLONGMax); 39 CHECK_LE(static_cast<LONG>(end()), kLONGMax); 40 r.cpMin = static_cast<LONG>(start()); 41 r.cpMax = static_cast<LONG>(end()); 42 return r; 43 } 44 45 } // namespace gfx 46
