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// Copyright (c) 2013 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 "remoting/host/screen_resolution.h"
#include <algorithm>
#include <limits>
namespace remoting {
ScreenResolution::ScreenResolution()
: dimensions_(SkISize::Make(0, 0)),
dpi_(SkIPoint::Make(0, 0)) {
}
ScreenResolution::ScreenResolution(const SkISize& dimensions,
const SkIPoint& dpi)
: dimensions_(dimensions),
dpi_(dpi) {
}
SkISize ScreenResolution::ScaleDimensionsToDpi(const SkIPoint& new_dpi) const {
int64 width = dimensions_.width();
int64 height = dimensions_.height();
// Scale the screen dimensions to new DPI.
width = std::min(width * new_dpi.x() / dpi_.x(),
static_cast<int64>(std::numeric_limits<int32>::max()));
height = std::min(height * new_dpi.y() / dpi_.y(),
static_cast<int64>(std::numeric_limits<int32>::max()));
return SkISize::Make(static_cast<int32>(width), static_cast<int32>(height));
}
bool ScreenResolution::IsEmpty() const {
return dimensions_.isEmpty() || dpi_.x() <= 0 || dpi_.y() <= 0;
}
bool ScreenResolution::IsValid() const {
return !IsEmpty() || dimensions_.isZero();
}
} // namespace remoting
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