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00001 /******************************************************************************** 00002 * * 00003 * I m a g e V i e w W i d g e t * 00004 * * 00005 ********************************************************************************* 00006 * Copyright (C) 2000,2002 by Jeroen van der Zijp. All Rights Reserved. * 00007 ********************************************************************************* 00008 * This library is free software; you can redistribute it and/or * 00009 * modify it under the terms of the GNU Lesser General Public * 00010 * License as published by the Free Software Foundation; either * 00011 * version 2.1 of the License, or (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 GNU * 00016 * Lesser General Public License for more details. * 00017 * * 00018 * You should have received a copy of the GNU Lesser General Public * 00019 * License along with this library; if not, write to the Free Software * 00020 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. * 00021 ********************************************************************************* 00022 * $Id: FXImageView.h,v 1.10 2002/03/12 07:11:30 fox Exp $ * 00023 ********************************************************************************/ 00024 #ifndef FXIMAGEVIEW_H 00025 #define FXIMAGEVIEW_H 00026 00027 #ifndef FXSCROLLAREA_H 00028 #include "FXScrollArea.h" 00029 #endif 00030 00031 namespace FX { 00032 00033 00034 class FXImage; 00035 00036 00037 /** 00038 * The Image View widget display a scrollable view of an image. 00039 */ 00040 class FXAPI FXImageView : public FXScrollArea { 00041 FXDECLARE(FXImageView) 00042 protected: 00043 FXImage *image; // Image to view 00044 FXint grabx; // Grab point x 00045 FXint graby; // Grab point y 00046 protected: 00047 FXImageView(); 00048 virtual void layout(); 00049 private: 00050 FXImageView(const FXImageView&); 00051 FXImageView &operator=(const FXImageView&); 00052 public: 00053 long onPaint(FXObject*,FXSelector,void*); 00054 long onMotion(FXObject*,FXSelector,void*); 00055 long onRightBtnPress(FXObject*,FXSelector,void*); 00056 long onRightBtnRelease(FXObject*,FXSelector,void*); 00057 public: 00058 enum { 00059 ID_XYZ=FXScrollArea::ID_LAST, 00060 ID_LAST 00061 }; 00062 public: 00063 00064 /// Construct a scroll window 00065 FXImageView(FXComposite* p,FXImage* img=NULL,FXObject* tgt=NULL,FXSelector sel=0,FXuint opts=0,FXint x=0,FXint y=0,FXint w=0,FXint h=0); 00066 00067 /// Create server-side resources 00068 virtual void create(); 00069 00070 /// Detach server-side resources 00071 virtual void detach(); 00072 00073 /// Image view widget can receive focus 00074 virtual FXbool canFocus() const; 00075 00076 /// Return the width of the contents 00077 virtual FXint getContentWidth(); 00078 00079 /// Return the height of the contents 00080 virtual FXint getContentHeight(); 00081 00082 /// Change image 00083 void setImage(FXImage* img); 00084 00085 /// Return image 00086 FXImage* getImage() const { return image; } 00087 00088 /// Save list to a stream 00089 virtual void save(FXStream& store) const; 00090 00091 /// Load list from a stream 00092 virtual void load(FXStream& store); 00093 00094 /// Destroy 00095 virtual ~FXImageView(); 00096 }; 00097 00098 } 00099 00100 #endif