fv_Base.h

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/* AbiWord
 * Copyright (c) 2003 Martin Sevior <msevior@physics.unimelb.edu.au>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301 USA.
 */

#ifndef FV_BASE_H
#define FV_BASE_H

typedef enum _FV_DragWhat
{
    FV_DragNothing,
    FV_DragTopLeftCorner,
    FV_DragTopRightCorner,
    FV_DragBotLeftCorner,
    FV_DragBotRightCorner,
    FV_DragLeftEdge,
    FV_DragTopEdge,
    FV_DragRightEdge,
    FV_DragBotEdge,
    FV_DragWhole
} FV_DragWhat;

class FL_DocLayout;
class PD_Document;
class GR_Graphics;
class FV_View;
class GR_Image;
class fp_Page;

class ABI_EXPORT FV_Base
{
public:
    FV_Base( FV_View* pView );
    virtual ~FV_Base();
    PD_Document *           getDoc(void) const;
    FL_DocLayout *          getLayout(void) const;
    GR_Graphics *           getGraphics(void) const;
    inline FV_View *        getView(void) const
        { return m_pView;}
    UT_sint32               getGlobCount(void) const;
    void                    mouseDrag(UT_sint32 x, UT_sint32 y);    // non virtual calling virtual _mouseDrag
    FV_DragWhat             getDragWhat(void) const
        { return m_iDraggingWhat; }
    void                    setDragWhat( FV_DragWhat iDragWhat )
        { m_iDraggingWhat = iDragWhat; }

protected:
    FV_View *               m_pView;
    UT_sint32               m_iGlobCount;
    UT_Rect                 m_recCurFrame;
    bool                    m_bFirstDragDone;
    UT_sint32               m_iFirstEverX;
    UT_sint32               m_iFirstEverY;
    UT_sint32               m_xLastMouse;
    UT_sint32               m_yLastMouse;

    void                    _beginGlob();
    void                    _endGlob();
    virtual void            _mouseDrag(UT_sint32 x, UT_sint32 y) = 0;
    void                    _doMouseDrag(UT_sint32 x, UT_sint32 y, UT_sint32& dx, UT_sint32& dy, UT_Rect& expX, UT_Rect& expY);
    void                    _checkDimensions();

private:
    FV_DragWhat             m_iDraggingWhat;    // made private on purpose
};

#endif