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FXBitmapView.h

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00001 /********************************************************************************
00002 *                                                                               *
00003 *                    B i t m a p   V i e w   W i d g e t                        *
00004 *                                                                               *
00005 *********************************************************************************
00006 * Copyright (C) 2000,2009 by Jeroen van der Zijp.   All Rights Reserved.        *
00007 *********************************************************************************
00008 * This library is free software; you can redistribute it and/or modify          *
00009 * it under the terms of the GNU Lesser General Public License as published by   *
00010 * the Free Software Foundation; either version 3 of the License, or             *
00011 * (at your option) any later version.                                           *
00012 *                                                                               *
00013 * This library is distributed in the hope that it will be useful,               *
00014 * but WITHOUT ANY WARRANTY; without even the implied warranty of                *
00015 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the                 *
00016 * GNU Lesser General Public License for more details.                           *
00017 *                                                                               *
00018 * You should have received a copy of the GNU Lesser General Public License      *
00019 * along with this program.  If not, see <http://www.gnu.org/licenses/>          *
00020 *********************************************************************************
00021 * $Id: FXBitmapView.h,v 1.13 2009/01/06 13:07:22 fox Exp $                      *
00022 ********************************************************************************/
00023 #ifndef FXBITMAPVIEW_H
00024 #define FXBITMAPVIEW_H
00025 
00026 #ifndef FXSCROLLAREA_H
00027 #include "FXScrollArea.h"
00028 #endif
00029 
00030 namespace FX {
00031 
00032 
00033 class FXBitmap;
00034 
00035 /// Bitmap alignment styles
00036 enum {
00037   BITMAPVIEW_NORMAL    = 0,              /// Normal mode is centered
00038   BITMAPVIEW_CENTER_X  = 0,              /// Centered horizontally
00039   BITMAPVIEW_LEFT      = 0x00100000,     /// Left-aligned
00040   BITMAPVIEW_RIGHT     = 0x00200000,     /// Right-aligned
00041   BITMAPVIEW_CENTER_Y  = 0,              /// Centered vertically
00042   BITMAPVIEW_TOP       = 0x00400000,     /// Top-aligned
00043   BITMAPVIEW_BOTTOM    = 0x00800000      /// Bottom-aligned
00044   };
00045 
00046 /**
00047 * The Bitmap View widget display a scrollable view of a monochrome bitmap image;
00048 * the bitmap is not owned by the bitmap frame so it must be explicitly deleted
00049 * elsewhere.  Thus, a single bitmap image can be displayed inside multiple bitmap
00050 * view widgets.
00051 */
00052 class FXAPI FXBitmapView : public FXScrollArea {
00053   FXDECLARE(FXBitmapView)
00054 protected:
00055   FXBitmap *bitmap;     // Image to view
00056   FXColor   onColor;    // Color for on pixels
00057   FXColor   offColor;   // Color for off pixels
00058   FXint     grabx;      // Grab point x
00059   FXint     graby;      // Grab point y
00060 protected:
00061   FXBitmapView();
00062 private:
00063   FXBitmapView(const FXBitmapView&);
00064   FXBitmapView &operator=(const FXBitmapView&);
00065 public:
00066   long onPaint(FXObject*,FXSelector,void*);
00067   long onMotion(FXObject*,FXSelector,void*);
00068   long onRightBtnPress(FXObject*,FXSelector,void*);
00069   long onRightBtnRelease(FXObject*,FXSelector,void*);
00070 public:
00071   enum {
00072     ID_XYZ=FXScrollArea::ID_LAST,
00073     ID_LAST
00074     };
00075 public:
00076 
00077   /// Construct a scroll window
00078   FXBitmapView(FXComposite* p,FXBitmap* bmp=NULL,FXObject* tgt=NULL,FXSelector sel=0,FXuint opts=0,FXint x=0,FXint y=0,FXint w=0,FXint h=0);
00079 
00080   /// Create server-side resources
00081   virtual void create();
00082 
00083   /// Detach server-side resources
00084   virtual void detach();
00085 
00086   /// Perform layout immediately
00087   virtual void layout();
00088 
00089   /// Image view widget can receive focus
00090   virtual FXbool canFocus() const;
00091 
00092   /// Return the width of the contents
00093   virtual FXint getContentWidth();
00094 
00095   /// Return the height of the contents
00096   virtual FXint getContentHeight();
00097 
00098   /// Change image
00099   void setBitmap(FXBitmap* bmp);
00100 
00101   /// Return image
00102   FXBitmap* getBitmap() const { return bitmap; }
00103 
00104   /// Set on color
00105   void setOnColor(FXColor clr);
00106 
00107   /// Get on color
00108   FXColor getOnColor() const { return onColor; }
00109 
00110   /// Set off color
00111   void setOffColor(FXColor clr);
00112 
00113   /// Get off color
00114   FXColor getOffColor() const { return offColor; }
00115 
00116   /// Set the current alignment.
00117   void setAlignment(FXuint mode);
00118 
00119   /// Get the current alignment.
00120   FXuint getAlignment() const;
00121 
00122   /// Save list to a stream
00123   virtual void save(FXStream& store) const;
00124 
00125   /// Load list from a stream
00126   virtual void load(FXStream& store);
00127 
00128   /// Destroy
00129   virtual ~FXBitmapView();
00130   };
00131 
00132 }
00133 
00134 #endif

Copyright © 1997-2009 Jeroen van der Zijp