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+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org 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 version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org.  If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+#ifndef OOX_XLS_DRAWINGBASE_HXX
+#define OOX_XLS_DRAWINGBASE_HXX
+
+#include "oox/drawingml/drawingmltypes.hxx"
+#include "oox/xls/worksheethelper.hxx"
+
+namespace oox {
+namespace xls {
+
+// ============================================================================
+
+/** Absolute position in a spreadsheet (in EMUs) independent from cells. */
+struct AnchorPointModel : public ::oox::drawingml::EmuPoint
+{
+    inline explicit     AnchorPointModel() : ::oox::drawingml::EmuPoint( -1, -1 ) {}
+    inline bool         isValid() const { return (X >= 0) && (Y >= 0); }
+};
+
+// ----------------------------------------------------------------------------
+
+/** Absolute size in a spreadsheet (in EMUs). */
+struct AnchorSizeModel : public ::oox::drawingml::EmuSize
+{
+    inline explicit     AnchorSizeModel() : ::oox::drawingml::EmuSize( -1, -1 ) {}
+    inline bool         isValid() const { return (Width >= 0) && (Height >= 0); }
+};
+
+// ----------------------------------------------------------------------------
+
+/** Position in spreadsheet (cell position and offset inside cell). */
+struct CellAnchorModel
+{
+    sal_Int32           mnCol;              /// Column index.
+    sal_Int32           mnRow;              /// Row index.
+    sal_Int64           mnColOffset;        /// X offset inside the column.
+    sal_Int64           mnRowOffset;        /// Y offset inside the row.
+
+    explicit            CellAnchorModel();
+    inline bool         isValid() const { return (mnCol >= 0) && (mnRow >= 0); }
+};
+
+// ----------------------------------------------------------------------------
+
+/** Application-specific client data of a shape. */
+struct AnchorClientDataModel
+{
+    bool                mbLocksWithSheet;
+    bool                mbPrintsWithSheet;
+
+    explicit            AnchorClientDataModel();
+};
+
+// ============================================================================
+
+/** Contains the position of a shape in the spreadsheet. Supports different
+    shape anchor modes (absolute, one-cell, two-cell). */
+class ShapeAnchor : public WorksheetHelper
+{
+public:
+    explicit            ShapeAnchor( const WorksheetHelper& rHelper );
+
+    /** Imports the shape anchor (one of the elements xdr:absoluteAnchor, xdr:oneCellAnchor, xdr:twoCellAnchor). */
+    void                importAnchor( sal_Int32 nElement, const AttributeList& rAttribs );
+    /** Imports the absolute anchor position from the xdr:pos element. */
+    void                importPos( const AttributeList& rAttribs );
+    /** Imports the absolute anchor size from the xdr:ext element. */
+    void                importExt( const AttributeList& rAttribs );
+    /** Imports the shape client data from the xdr:clientData element. */
+    void                importClientData( const AttributeList& rAttribs );
+    /** Sets an attribute of the cell-dependent anchor position from xdr:from and xdr:to elements. */
+    void                setCellPos( sal_Int32 nElement, sal_Int32 nParentContext, const ::rtl::OUString& rValue );
+    /** Imports the client anchor settings from a VML element. */
+    void                importVmlAnchor( const ::rtl::OUString& rAnchor );
+    /** Imports the client anchor settings from a BIFF or DFF stream. */
+    void                importBiffAnchor( BinaryInputStream& rStrm );
+
+    /** Calculates the resulting shape anchor in EMUs. */
+    ::oox::drawingml::EmuRectangle calcAnchorRectEmu(
+                            const ::com::sun::star::awt::Size& rPageSizeHmm ) const;
+    /** Calculates the resulting shape anchor in 1/100 mm. */
+    ::com::sun::star::awt::Rectangle calcAnchorRectHmm(
+                            const ::com::sun::star::awt::Size& rPageSizeHmm ) const;
+
+private:
+    /** Converts the passed anchor to an absolute position in EMUs. */
+    ::oox::drawingml::EmuPoint calcCellAnchorEmu( const CellAnchorModel& rModel ) const;
+
+private:
+    enum AnchorType
+    {
+        ANCHOR_INVALID,         /// Anchor type is unknown.
+        ANCHOR_ABSOLUTE,        /// Absolute anchor (top-left corner and size in absolute units).
+        ANCHOR_ONECELL,         /// One-cell anchor (top-left corner at cell, size in absolute units).
+        ANCHOR_TWOCELL          /// Two-cell anchor (top-left and bottom-right corner at cell).
+    };
+
+    /** Specifies how cell positions from CellAnchorModel have to be processed. */
+    enum CellAnchorType
+    {
+        CELLANCHOR_EMU,             /// Offsets are given in EMUs.
+        CELLANCHOR_PIXEL,           /// Offsets are given in screen pixels.
+        CELLANCHOR_COLROW           /// Offsets are given in fractions of column width or row height.
+    };
+
+    AnchorType          meAnchorType;       /// Type of this shape anchor.
+    CellAnchorType      meCellAnchorType;   /// Type of the cell anchor models.
+    AnchorPointModel    maPos;              /// Top-left position, if anchor is of type absolute.
+    AnchorSizeModel     maSize;             /// Anchor size, if anchor is not of type two-cell.
+    CellAnchorModel     maFrom;             /// Top-left position, if anchor is not of type absolute.
+    CellAnchorModel     maTo;               /// Bottom-right position, if anchor is of type two-cell.
+    AnchorClientDataModel maClientData;     /// Shape client data.
+    sal_Int32           mnEditAs;           /// Anchor mode as shown in the UI.
+};
+
+// ============================================================================
+
+} // namespace xls
+} // namespace oox
+
+#endif