| /* |
| * Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
| * (C) 1999 Antti Koivisto (koivisto@kde.org) |
| * (C) 2001 Dirk Mueller (mueller@kde.org) |
| * (C) 2006 Alexey Proskuryakov (ap@webkit.org) |
| * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved. |
| * Copyright (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/) |
| * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies) |
| * Copyright (C) 2012-2013 Intel Corporation. All rights reserved. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| * |
| */ |
| |
| #ifndef ViewportDescription_h |
| #define ViewportDescription_h |
| |
| #include "core/page/PageScaleConstraints.h" |
| #include "platform/Length.h" |
| #include "platform/geometry/FloatSize.h" |
| |
| namespace WebCore { |
| |
| struct ViewportDescription { |
| |
| enum Type { |
| // These are ordered in increasing importance. |
| UserAgentStyleSheet, |
| HandheldFriendlyMeta, |
| MobileOptimizedMeta, |
| ViewportMeta, |
| AuthorStyleSheet |
| } type; |
| |
| enum { |
| ValueAuto = -1, |
| ValueDeviceWidth = -2, |
| ValueDeviceHeight = -3, |
| ValuePortrait = -4, |
| ValueLandscape = -5, |
| ValueDeviceDPI = -6, |
| ValueLowDPI = -7, |
| ValueMediumDPI = -8, |
| ValueHighDPI = -9, |
| ValueExtendToZoom = -10 |
| }; |
| |
| ViewportDescription(Type type = UserAgentStyleSheet) |
| : type(type) |
| , zoom(ValueAuto) |
| , minZoom(ValueAuto) |
| , maxZoom(ValueAuto) |
| , userZoom(ValueAuto) |
| , orientation(ValueAuto) |
| , deprecatedTargetDensityDPI(ValueAuto) |
| { |
| } |
| |
| // All arguments are in CSS units. |
| PageScaleConstraints resolve(const FloatSize& initialViewportSize) const; |
| |
| Length minWidth; |
| Length maxWidth; |
| Length minHeight; |
| Length maxHeight; |
| float zoom; |
| float minZoom; |
| float maxZoom; |
| float userZoom; |
| float orientation; |
| float deprecatedTargetDensityDPI; // Only used for Android WebView |
| |
| bool operator==(const ViewportDescription& other) const |
| { |
| // Used for figuring out whether to reset the viewport or not, |
| // thus we are not taking type into account. |
| return minWidth == other.minWidth |
| && maxWidth == other.maxWidth |
| && minHeight == other.minHeight |
| && maxHeight == other.maxHeight |
| && zoom == other.zoom |
| && minZoom == other.minZoom |
| && maxZoom == other.maxZoom |
| && userZoom == other.userZoom |
| && orientation == other.orientation |
| && deprecatedTargetDensityDPI == other.deprecatedTargetDensityDPI; |
| } |
| |
| bool operator!=(const ViewportDescription& other) const |
| { |
| return !(*this == other); |
| } |
| |
| bool isLegacyViewportType() const { return type >= HandheldFriendlyMeta && type <= ViewportMeta; } |
| bool isMetaViewportType() const { return type == ViewportMeta; } |
| bool isSpecifiedByAuthor() const { return type != UserAgentStyleSheet; } |
| |
| private: |
| enum Direction { Horizontal, Vertical }; |
| static float resolveViewportLength(const Length&, const FloatSize& initialViewportSize, Direction); |
| }; |
| |
| } // namespace WebCore |
| |
| #endif // ViewportDescription_h |