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Main Page Class Hierarchy Alphabetical List Compound List File List Compound Members
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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) 2000,2009 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: FXImageView.h,v 1.21 2009/01/06 13:07:25 fox Exp $ * 00022 ********************************************************************************/ 00023 #ifndef FXIMAGEVIEW_H 00024 #define FXIMAGEVIEW_H 00025 00026 #ifndef FXSCROLLAREA_H 00027 #include "FXScrollArea.h" 00028 #endif 00029 00030 namespace FX { 00031 00032 00033 class FXImage; 00034 00035 00036 /// Image alignment styles 00037 enum { 00038 IMAGEVIEW_NORMAL = 0, /// Normal mode is centered 00039 IMAGEVIEW_CENTER_X = 0, /// Centered horizontally 00040 IMAGEVIEW_LEFT = 0x00100000, /// Left-aligned 00041 IMAGEVIEW_RIGHT = 0x00200000, /// Right-aligned 00042 IMAGEVIEW_CENTER_Y = 0, /// Centered vertically 00043 IMAGEVIEW_TOP = 0x00400000, /// Top-aligned 00044 IMAGEVIEW_BOTTOM = 0x00800000 /// Bottom-aligned 00045 }; 00046 00047 00048 /** 00049 * The Image View widget display a scrollable view of an image. 00050 */ 00051 class FXAPI FXImageView : public FXScrollArea { 00052 FXDECLARE(FXImageView) 00053 protected: 00054 FXImage *image; // Image to view 00055 FXint grabx; // Grab point x 00056 FXint graby; // Grab point y 00057 protected: 00058 FXImageView(); 00059 private: 00060 FXImageView(const FXImageView&); 00061 FXImageView &operator=(const FXImageView&); 00062 public: 00063 long onPaint(FXObject*,FXSelector,void*); 00064 long onMotion(FXObject*,FXSelector,void*); 00065 long onRightBtnPress(FXObject*,FXSelector,void*); 00066 long onRightBtnRelease(FXObject*,FXSelector,void*); 00067 public: 00068 enum { 00069 ID_XYZ=FXScrollArea::ID_LAST, 00070 ID_LAST 00071 }; 00072 public: 00073 00074 /// Construct a scroll window 00075 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); 00076 00077 /// Create server-side resources 00078 virtual void create(); 00079 00080 /// Detach server-side resources 00081 virtual void detach(); 00082 00083 /// Perform layout 00084 virtual void layout(); 00085 00086 /// Image view widget can receive focus 00087 virtual FXbool canFocus() const; 00088 00089 /// Return the width of the contents 00090 virtual FXint getContentWidth(); 00091 00092 /// Return the height of the contents 00093 virtual FXint getContentHeight(); 00094 00095 /// Change image 00096 void setImage(FXImage* img); 00097 00098 /// Return image 00099 FXImage* getImage() const { return image; } 00100 00101 /// Set the current alignment. 00102 void setAlignment(FXuint mode); 00103 00104 /// Get the current alignment. 00105 FXuint getAlignment() const; 00106 00107 /// Save list to a stream 00108 virtual void save(FXStream& store) const; 00109 00110 /// Load list from a stream 00111 virtual void load(FXStream& store); 00112 00113 /// Destroy 00114 virtual ~FXImageView(); 00115 }; 00116 00117 } 00118 00119 #endif
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