cdrawingarea.h

来自「Gambas is a graphical development enviro」· C头文件 代码 · 共 96 行

/***************************************************************************

  CDrawingArea.h

  (c) 2000-2005 Beno顃 Minisini <[e-mail]>

  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 1, 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., 675 Mass Ave, Cambridge, MA 02139, USA.

***************************************************************************/

#ifndef __CDRAWINGAREA_H
#define __CDRAWINGAREA_H

#include "gambas.h"

#include <qevent.h>
#include <qframe.h>

#include "CWidget.h"
#include "CContainer.h"

#ifndef __CDRAWINGAREA_CPP
extern GB_DESC CDrawingAreaDesc[];
#else

#define THIS    ((CDRAWINGAREA *)_object)
#define WIDGET  ((MyDrawingArea *)((CWIDGET *)_object)->widget)


#define CDRAWINGAREA_PROPERTIES CWIDGET_PROPERTIES \
  ",Cached,Tracking,Border" /*Cached,Transparent"*/

#endif

typedef
  struct {
    CWIDGET widget;
    QWidget *container;
    }
  CDRAWINGAREA;

class MyDrawingArea : public QFrame
{
  Q_OBJECT

public:

  MyDrawingArea(QWidget *parent);
  ~MyDrawingArea();

  //void setTransparent(bool);
  //bool isTransparent(void) { return transparent; }

  void setCached(bool);
  bool isCached(void) { return _background != 0; }
  //QPixmap *getCache(void) { return cache; }
  //void refreshCache(void) { if (cache) setBackgroundPixmap(*cache); }

  void setBackground(void);
  void clearBackground(void);
  QPixmap *background() const { return _background; }
  void refreshBackground();

  void setFrozen(bool f);
  bool isFrozen() { return _frozen; }

protected:

  virtual void resize(int w, int h);
  virtual void paintEvent(QPaintEvent *);
  //virtual void drawContents(QPainter *p);
  virtual void setGeometry(int x, int y, int w, int h);

private:

  QPixmap *_background;
  bool _frozen;
  long _event_mask;

  void doResize(int w, int h);
};

#endif