ginebra2/ContentViews/ViewportMetaData.h
changeset 3 0954f5dd2cd0
child 16 3c88a81ff781
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ginebra2/ContentViews/ViewportMetaData.h	Tue Jun 29 00:46:29 2010 -0400
@@ -0,0 +1,96 @@
+/*
+* 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:
+*
+*/
+
+#ifndef ViewportMetaData_h
+#define ViewportMetaData_h
+
+#include <QFlags>
+#include <QObject>
+#include <QRect>
+
+namespace GVA {
+
+struct ParsedViewportData{
+    QString m_width;
+    QString m_height;
+    qreal m_minScale;
+};
+
+class ViewportMetaData {
+public:
+    enum {
+        ValueUndefined = -1
+    };
+
+    enum ScaleLimit {
+        UserDefinedMinumumScale = 0x1,
+        UserDefinedMaximumScale = 0x2,
+        UserDefinedInitialScale = 0x4,
+    };
+    Q_DECLARE_FLAGS(ScaleLimits, ScaleLimit)
+
+    ViewportMetaData();
+    ViewportMetaData(const ViewportMetaData&);
+    ViewportMetaData& operator=(const ViewportMetaData&);
+    ~ViewportMetaData();
+
+    void adjustViewportData(const QRect& clientRect);
+    void updateViewportData(const QSize& size, const QRect& clientRect);
+    void orientationChanged(const QRect& newClientRect);
+    bool isLayoutNeeded();
+    void reset() {initialize();}
+
+    void setFlag(ScaleLimit scaleLimit, bool enable)
+    {
+        if (enable)
+            m_scaleLimits |= scaleLimit;
+        else
+            m_scaleLimits &= !scaleLimit;
+    }
+
+    bool getFlag(ScaleLimit scaleLimit)
+    {
+        return m_scaleLimits.testFlag(scaleLimit);
+    }
+
+protected:
+    void initialize();
+    void adjustZoomValues(const QRect& clientRect);
+    bool isUserSpecifiedWidth();
+    bool isUserSpecifiedHeight();
+
+public:
+    qreal m_initialScale;
+    qreal m_minimumScale;
+    qreal m_maximumScale;
+    int m_width;
+    int m_height;
+    bool m_userScalable;
+    ScaleLimits m_scaleLimits;
+    bool m_isValid;
+    ParsedViewportData m_specifiedData;
+};//ViewportMetaData
+
+Q_DECLARE_OPERATORS_FOR_FLAGS(ViewportMetaData::ScaleLimits)
+
+} //namespace GVA
+
+#endif //ViewportMetaData_h