| // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "ui/gfx/range/range.h" |
| |
| #include <limits> |
| |
| #include "base/logging.h" |
| |
| namespace gfx { |
| |
| Range::Range(const CHARRANGE& range, LONG total_length) { |
| // Check if this is an invalid range. |
| if (range.cpMin == -1 && range.cpMax == -1) { |
| *this = InvalidRange(); |
| } else { |
| DCHECK_GE(range.cpMin, 0); |
| set_start(range.cpMin); |
| // {0,-1} is the "whole range" but that doesn't mean much out of context, |
| // so use the |total_length| parameter. |
| if (range.cpMax == -1) { |
| DCHECK_EQ(0, range.cpMin); |
| DCHECK_NE(-1, total_length); |
| set_end(total_length); |
| } else { |
| set_end(range.cpMax); |
| } |
| } |
| } |
| |
| CHARRANGE Range::ToCHARRANGE() const { |
| CHARRANGE r = { -1, -1 }; |
| if (!IsValid()) |
| return r; |
| |
| const LONG kLONGMax = std::numeric_limits<LONG>::max(); |
| CHECK_LE(static_cast<LONG>(start()), kLONGMax); |
| CHECK_LE(static_cast<LONG>(end()), kLONGMax); |
| r.cpMin = static_cast<LONG>(start()); |
| r.cpMax = static_cast<LONG>(end()); |
| return r; |
| } |
| |
| } // namespace gfx |