www.pudn.com > MicroWindows-Source-200606.zip > freearea.h

// 
// Micro Windows Implementation 
// freearea.h: the FreeArea class for irregular regions 
// 
// 「自由區域」又稱 Region , 是 GUI 裡的重要觀念, 在此我們用一個 
// 矩形的陣列來表示. 詳細的演算法見 freearea.CPP. 
// 
// $Revision: 1.2 $ 
// $Source: P:/MWINDOWS/INCLUDE/rcs/freearea.h $ 
// $Date: 1994/01/08 18:09:37 $ 
// 
 
#ifndef __freearea_h 
#define __freearea_h 
 
#ifndef __gobject_h 
#   include "gobject.h" 
#endif 
 
class FreeArea; 
 
class RectArray : public GObject 
{ 
public: 
    RectArray (); 
    ~RectArray(); 
 
    void  add    (Rect *prect); 
    void  copy   (RectArray *parray); 
    void  move   (int ox, int oy); 
    void  purge  (); 
    int   amount (); 
    int   getsize(); 
    Rect *get (int index); 
 
protected: 
    void expand(); 
    void deleteall(); 
 
    Rect **array; 
    int current, size; 
    friend FreeArea; 
}; 
 
 
#define FreeAreaBegin(x) Rect *x##_tmp; int x##_size=x->getsize(), x##_t;\ 
                         for (x##_t = 0; x##_t < x##_size; x##_t++) {\ 
                         if ((x##_tmp=x->get(x##_t))==NULL) continue; 
#define FreeAreaEnd      } 
 
 
class FreeArea : public RectArray 
{ 
public: 
    BOOL    intersection (Rect *prect, FreeArea *result); 
    BOOL    intersection (FreeArea *parea, FreeArea *result); 
 
    void    add (Rect *prect); 
    void    add (FreeArea *parea); 
    void    cut (Rect *prect); 
    void    cut (FreeArea *parea); 
    void    copy (FreeArea *parea); 
}; 
 
#endif