--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ginebra2/ContentViews/ViewportMetaData.cpp	Tue Jul 06 14:03:49 2010 +0300
@@ -0,0 +1,223 @@
+/*
+* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+*
+* This program is free software: you can redistribute it and/or modify
+* it under the terms of the GNU Lesser General Public License as published by
+* the Free Software Foundation, version 2.1 of the License.
+*
+* This program 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 Lesser General Public License for more details.
+*
+* You should have received a copy of the GNU Lesser General Public License
+* along with this program.  If not,
+* see "http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html/".
+*
+* Description:
+*
+*/
+
+#include "ViewportMetaData.h"
+
+static const int DefaultViewportWidth = 640;
+static const int DefaultViewportHeight = 640;
+static const int MinViewportWidth = 200;
+static const int MaxViewportWidth = 10000;
+static const int MinViewportHeight = 200;
+static const int MaxViewportHeight = 10000;
+static const qreal DefaultMinScale = 0.2;
+static const qreal DefaultMaxScale = 5.;
+
+namespace GVA {
+
+ViewportMetaData::ViewportMetaData()
+{
+    initialize();
+}
+
+ViewportMetaData::ViewportMetaData(const ViewportMetaData& other)
+{
+    m_initialScale = other.m_initialScale;
+    m_minimumScale = other.m_minimumScale;
+    m_maximumScale = other.m_maximumScale;
+    m_width = other.m_width;
+    m_height = other.m_height;
+    m_userScalable = other.m_userScalable;
+    m_isValid = other.m_isValid;
+    m_scaleLimits = other.m_scaleLimits;
+    m_specifiedData.m_width = other.m_specifiedData.m_width;
+    m_specifiedData.m_height = other.m_specifiedData.m_height;
+    m_specifiedData.m_minScale = other.m_specifiedData.m_minScale;
+}
+
+ViewportMetaData& ViewportMetaData::operator=(const ViewportMetaData& other)
+{
+    m_initialScale = other.m_initialScale;
+    m_minimumScale = other.m_minimumScale;
+    m_maximumScale = other.m_maximumScale;
+    m_width = other.m_width;
+    m_height = other.m_height;
+    m_userScalable = other.m_userScalable;
+    m_isValid = other.m_isValid;
+    m_scaleLimits = other.m_scaleLimits;
+    m_specifiedData.m_width = other.m_specifiedData.m_width;
+    m_specifiedData.m_height = other.m_specifiedData.m_height;
+    m_specifiedData.m_minScale = other.m_specifiedData.m_minScale;
+
+    return *this;
+}
+
+ViewportMetaData::~ViewportMetaData()
+{}
+
+void ViewportMetaData::adjustViewportData(const QRect& clientRect)
+{
+    //Data updated from viewport tag
+    m_isValid = true;
+
+    //Adjust viewport dimensions
+    m_width = qBound(MinViewportWidth, m_width, MaxViewportWidth);
+    m_height = qBound(MinViewportHeight, m_height, MaxViewportHeight);
+
+    //Aspect ratio
+    qreal aspectRation = (qreal)clientRect.width() / clientRect.height();
+
+    if (m_width != DefaultViewportWidth && m_height == DefaultViewportHeight) {
+        //Width has been specified. Adjust height, min scale and max scale
+        m_height = m_width * (1 / aspectRation);
+    } else if (m_width == DefaultViewportWidth && m_height != DefaultViewportHeight) {
+        //Height has been specified. Adjust width, min scale and max scale
+        m_width = m_height * aspectRation;
+    } else {
+        //Putting below code under seperate 'else' to make it readable!
+        m_height = m_width * (1 / aspectRation);
+    }
+
+    //Adjust zoom limits
+    adjustZoomValues(clientRect);
+}
+
+void ViewportMetaData::updateViewportData(const QSize& newContentSize, const QRect& clientRect)
+{
+    //If still viewport tag has not been parsed
+    //Do not update values.
+    if(!m_isValid)
+        return;
+
+    //Update with viewport dimensions
+    m_width = qBound(MinViewportWidth, newContentSize.width(), MaxViewportWidth);
+    m_height = qBound(MinViewportHeight, newContentSize.height(), MaxViewportHeight);
+
+    //Adjust zoom limits
+    adjustZoomValues(clientRect);
+}
+
+void ViewportMetaData::orientationChanged(const QRect& newClientRect)
+{
+    //If still viewport tag has not been parsed
+    //Do not update values.
+    if(!m_isValid)
+        return;
+
+    //Aspect ratio
+    qreal aspectRation = (qreal)newClientRect.width() / newClientRect.height();
+
+    //Update with viewport dimensions
+    if (m_specifiedData.m_width.length()) {
+        if (QString::compare(m_specifiedData.m_width, "device-width", Qt::CaseInsensitive) == 0)
+            m_width = newClientRect.width();
+        else if(QString::compare(m_specifiedData.m_width, "device-height", Qt::CaseInsensitive) == 0)
+            m_width = newClientRect.height();
+
+        m_height = m_width * (1 / aspectRation);
+    }
+
+    //Check if width has not bee specified.
+    if (!m_specifiedData.m_width.length()) {
+        if (QString::compare(m_specifiedData.m_height, "device-width", Qt::CaseInsensitive) == 0)
+            m_height = newClientRect.width();
+        else if(QString::compare(m_specifiedData.m_height, "device-height", Qt::CaseInsensitive) == 0)
+            m_height = newClientRect.height();
+
+        m_width = m_height * aspectRation;
+    }
+
+    //Update with bounds
+    m_width = qBound(MinViewportWidth, m_width, MaxViewportWidth);
+    m_height = qBound(MinViewportHeight, m_height, MaxViewportHeight);
+}
+
+bool ViewportMetaData::isLayoutNeeded()
+{
+    if (!isUserSpecifiedWidth() || !isUserSpecifiedHeight())
+        return true;
+    return false;
+}
+void ViewportMetaData::initialize()
+{
+    m_initialScale = ValueUndefined;
+    m_minimumScale = DefaultMinScale;
+    m_maximumScale = DefaultMaxScale;
+    m_width = DefaultViewportWidth;
+    m_height = DefaultViewportHeight;
+    m_userScalable = true;
+    m_isValid = false;
+
+    //Clear user defined scales
+    setFlag(UserDefinedMinumumScale, false);
+    setFlag(UserDefinedMaximumScale, false);
+    setFlag(UserDefinedInitialScale, false);
+}
+
+void ViewportMetaData::adjustZoomValues(const QRect& clientRect)
+{
+    qreal fitToWidthZoom = (qreal)clientRect.width() / m_width;
+    fitToWidthZoom = qBound(DefaultMinScale, fitToWidthZoom, DefaultMaxScale);
+
+    m_maximumScale = qBound(fitToWidthZoom, m_maximumScale, DefaultMaxScale);
+
+    //Adjust minimum-sclae
+    if (getFlag(UserDefinedMinumumScale)) {
+        m_minimumScale = m_specifiedData.m_minScale;
+        m_minimumScale = qBound(fitToWidthZoom, m_minimumScale, m_maximumScale);
+    }
+    else
+        m_minimumScale = fitToWidthZoom;
+
+    //Adjust initial-scale
+    if (getFlag(UserDefinedInitialScale))
+        m_initialScale = qBound(m_minimumScale, m_initialScale, m_maximumScale);
+    else
+        m_initialScale = m_minimumScale;
+
+    //Turn off zooming if min and max zoom are same
+    if (m_minimumScale == m_maximumScale)
+        m_userScalable = false;
+}
+
+
+//FIX ME : Merge below functions to single. Now in Hurry!!
+bool ViewportMetaData::isUserSpecifiedWidth()
+{
+    if (m_specifiedData.m_width.length()) {
+        if (!QString::compare(m_specifiedData.m_width, "device-width", Qt::CaseInsensitive)
+            || !QString::compare(m_specifiedData.m_width, "device-height", Qt::CaseInsensitive))
+            return false;
+    }
+    return true;
+}
+
+bool ViewportMetaData::isUserSpecifiedHeight()
+{
+    if (m_specifiedData.m_height.length()) {
+        if (!QString::compare(m_specifiedData.m_height, "device-width", Qt::CaseInsensitive)
+            || !QString::compare(m_specifiedData.m_height, "device-height", Qt::CaseInsensitive))
+            return false;
+    }
+    return true;
+}
+
+}//namespace GVA
+