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/* Copyright 2004, Daniel Woods Bullok <[email protected]>
distributed under the terms of the
GNU GENERAL PUBLIC LICENSE Version 2 -
See the file kdebase/COPYING for details
*/
#ifndef __const_space_grid_h__
#define __const_space_grid_h__
#include <qnamespace.h>
#include <qpoint.h>
#include <qsize.h>
class FlowGridManager {
// Determine if two FlowGridManager objs have the same layout. They may or
// may not have the same input parameters, but the resulting layout is identical.
friend bool operator== ( const FlowGridManager & gp1, const FlowGridManager & gp2 );
public:
typedef enum {
ItemSlack,SpaceSlack,BorderSlack,NoSlack
} Slack;
FlowGridManager(QSize p_item_size=QSize(0,0),
QSize p_space_size=QSize(0,0),
QSize p_border_size=QSize(0,0),
QSize frame_size=QSize(0,0),
Qt::Orientation orient=Qt::Horizontal,
int num_items=0,
Slack slack_x=ItemSlack,
Slack slack_y=ItemSlack);
void setNumItems(int num_items);
void setItemSize(QSize item_size);
void setSpaceSize(QSize space_size);
void setBorderSize(QSize border_size);
void setOrientation(Qt::Orientation orient);
void setFrameSize(QSize frame_size);
void setSlack(Slack slack_x, Slack slack_y);
void setConserveSpace(bool conserve);
QSize itemSize() const;
QSize spaceSize() const;
QSize borderSize() const;
QSize gridDim() const;
QSize gridSpacing() const;
QSize frameSize() const;
QPoint origin() const;
Qt::Orientation orientation() const;
bool conserveSpace() const;
// Slack slackX() const;
// Slack slackY() const;
QPoint posAtCell(int x,int y) const;
QPoint pos(int i) const;
QPoint cell(int index) const;
bool isValid() const;
int indexNearest(QPoint p) const;
void dump();
protected:
int _getHH(QSize size) const;
int _getWH(QSize size) const;
QSize _swapHV(QSize hv) const;
inline void _checkReconfigure() const;
int _slack(int nitems,int length,int item,int space,int border) const;
void _reconfigure() const;
void _clear() const;
protected:
// user-definable data
QSize _pItemSize,_pSpaceSize,_pBorderSize,_pFrameSize;
Slack _slackX, _slackY;
bool _conserveSpace;
Qt::Orientation _orientation;
int _numItems;
// results
mutable QSize _itemSize, _spaceSize, _borderSize, _gridDim, _gridSpacing, _frameSize;
mutable QPoint _origin;
// status
mutable bool _dirty, _valid;
};
// reconfigure the grid if necessary.
inline void FlowGridManager::_checkReconfigure() const
{ if (!_dirty) return;
_reconfigure();
}
#endif
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