summaryrefslogtreecommitdiffstats
path: root/ui/base/range/range_win.cc
diff options
context:
space:
mode:
Diffstat (limited to 'ui/base/range/range_win.cc')
-rw-r--r--ui/base/range/range_win.cc45
1 files changed, 45 insertions, 0 deletions
diff --git a/ui/base/range/range_win.cc b/ui/base/range/range_win.cc
new file mode 100644
index 0000000..0a34958
--- /dev/null
+++ b/ui/base/range/range_win.cc
@@ -0,0 +1,45 @@
+// 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/base/range/range.h"
+
+#include <limits>
+
+#include "base/logging.h"
+
+namespace ui {
+
+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();
+ DCHECK_LE(static_cast<LONG>(start()), kLONGMax);
+ DCHECK_LE(static_cast<LONG>(end()), kLONGMax);
+ r.cpMin = start();
+ r.cpMax = end();
+ return r;
+}
+
+} // namespace gfx