gecko/dom/base/nsViewportInfo.cpp
2015-05-03 15:32:37 -04:00

30 lines
918 B
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsViewportInfo.h"
#include "mozilla/Assertions.h"
#include <algorithm>
using namespace mozilla;
void
nsViewportInfo::SetDefaultZoom(const CSSToScreenScale& aDefaultZoom)
{
MOZ_ASSERT(aDefaultZoom.scale >= 0.0f);
mDefaultZoom = aDefaultZoom;
}
void
nsViewportInfo::ConstrainViewportValues()
{
// Constrain the min/max zoom as specified at:
// dev.w3.org/csswg/css-device-adapt section 6.2
mMaxZoom = std::max(mMinZoom, mMaxZoom);
mDefaultZoom = mDefaultZoom < mMaxZoom ? mDefaultZoom : mMaxZoom;
mDefaultZoom = mDefaultZoom > mMinZoom ? mDefaultZoom : mMinZoom;
}