gwj / po_oopc · Files

#include "screen.h"
#include "cpoint.h"
#include <list>
#include <string>
#include <ctype.h>
using namespace std;

class CView
{
protected:
  CRect geom;
public:
  CView (CRect g):geom (g)
  {
  };
  virtual void paint () = 0;
  virtual bool handleEvent (int key) = 0;
  virtual void move (const CPoint & delta)
  {
    geom.topleft += delta;
  };
  virtual ~ CView ()
  {
  };
};

class CWindow:public CView
{
protected:
  char c;
public:
    CWindow (CRect r, char _c = '*'):CView (r), c (_c)
  {
  };
  void paint ()
  {
    for (int i = geom.topleft.y; i < geom.topleft.y + geom.size.y; i++)
      {
	gotoyx (i, geom.topleft.x);
	for (int j = 0; j < geom.size.x; j++)
	  printw ("%c", c);
      };
  };
  bool handleEvent (int key)
  {
    switch (key)
      {
      case KEY_UP:
	move (CPoint (0, -1));
	return true;
      case KEY_DOWN:
	move (CPoint (0, 1));
	return true;
      case KEY_RIGHT:
	move (CPoint (1, 0));
	return true;
      case KEY_LEFT:
	move (CPoint (-1, 0));
	return true;
      };
    return false;
  };
};

class CFramedWindow:public CWindow
{
public:
  CFramedWindow (CRect r, char _c = '\''):CWindow (r, _c)
  {
  };
  void paint ()
  {
    for (int i = geom.topleft.y; i < geom.topleft.y + geom.size.y; i++)
      {
	gotoyx (i, geom.topleft.x);
	if ((i == geom.topleft.y) || (i == geom.topleft.y + geom.size.y - 1))
	  {
	    printw ("+");
	    for (int j = 1; j < geom.size.x - 1; j++)
	      printw ("-");
	    printw ("+");
	  }
	else
	  {
	    printw ("|");
	    for (int j = 1; j < geom.size.x - 1; j++)
	      printw ("%c", c);
	    printw ("|");
	  }
      }
  };
};

class CInputLine:public CFramedWindow
{
  string text;
public:
    CInputLine (CRect r, char _c = ','):CFramedWindow (r, _c)
  {
  };
  void paint ()
  {
    CFramedWindow::paint ();
    gotoyx (geom.topleft.y + 1, geom.topleft.x + 1);

    for (unsigned j = 1, i = 0; (j + 1 < (unsigned) geom.size.x)
	 && (i < text.length ()); j++, i++)
      printw ("%c", text[i]);
  };
  bool handleEvent (int c)
  {
    if (CFramedWindow::handleEvent (c))
      return true;
    if ((c == KEY_DC) || (c == KEY_BACKSPACE))
      {
	if (text.length () > 0)
	  {
	    text.erase (text.length () - 1);
	    return true;
	  };
      }
    if ((c > 255) || (c < 0))
      return false;
    if (!isalnum (c) && (c != ' '))
      return false;
    text.push_back (c);
    return true;
  }
};

class CGroup:public CView
{
  list < CView * >children;
public:
  CGroup (CRect g):CView (g)
  {
  };
  void paint ()
  {
    for (list < CView * >::iterator i = children.begin ();
	 i != children.end (); i++)
      (*i)->paint ();
  };
  bool handleEvent (int key)
  {
    if (!children.empty () && children.back ()->handleEvent (key))
      return true;
    if (key == '\t')
      {
	if (!children.empty ())
	  {
	    children.push_front (children.back ());
	    children.pop_back ();
	  };
	return true;
      }
    return false;
  };
  void insert (CView * v)
  {
    children.push_back (v);
  };
  ~CGroup ()
  {
    for (list < CView * >::iterator i = children.begin ();
	 i != children.end (); i++)
      delete (*i);
  };
};

class CDesktop:public CGroup
{
public:
  CDesktop ():CGroup (CRect ())
  {
    int y, x;
      init_screen ();
      getscreensize (y, x);
      geom.size.x = x;
      geom.size.y = y;
  };
  ~CDesktop ()
  {
    done_screen ();
  };

  void paint()
  {
    for (int i = geom.topleft.y; i < geom.topleft.y + geom.size.y; i++)
      {
	gotoyx (i, geom.topleft.x);
	for (int j = 0; j < geom.size.x; j++)
	  printw (".");
      };
    CGroup::paint();
  }

  int getEvent ()
  {
    return ngetch ();
  };

  void run ()
  {
    int c;
    paint ();
    refresh ();
    while (1)
      {
	c = getEvent ();
	if (c == 27)
	  break;
	if (handleEvent (c))
	  {
	    paint ();
	    refresh ();
	  };
      };
  };
};


int
main ()
{
  CDesktop d;
  d.insert (new CInputLine (CRect (CPoint (5, 7), CPoint (15, 15))));
  d.insert (new CWindow (CRect (CPoint (2, 3), CPoint (20, 10)), '#'));
  d.run ();
  return 0;
}