110 lines
2.8 KiB
C++
110 lines
2.8 KiB
C++
/*
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* This is a part of the BugTrap package.
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* Copyright (c) 2005-2009 IntelleSoft.
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* All rights reserved.
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*
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* Description: Image view control class.
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* Author: Maksim Pyatkovskiy.
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*
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* This source code is only intended as a supplement to the
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* BugTrap package reference and related electronic documentation
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* provided with the product. See these sources for detailed
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* information regarding the BugTrap package.
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*/
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#pragma once
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/// Image view control class.
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class CImageView
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{
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public:
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/// Initialize the object.
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CImageView(void);
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/// De-initialize the object.
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~CImageView(void);
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/// Attach image view object to window handle.
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void Attach(HWND hwnd);
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/// Detach image view object to window handle.
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void Detach(void);
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/// Set image information.
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void SetImage(HBITMAP hBitmap);
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/// Reset image information.
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void ResetImage(void);
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/// Get image handle.
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HBITMAP GetImageHandle(void) const;
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/// Fit image to actual window size.
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void FitImage(void);
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/// Reset image size.
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void ResetSize(void);
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/// Zoom in image.
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void ZoomIn(void);
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/// Zoom out image.
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void ZoomOut(void);
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enum
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{
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/// Number of symbols in one line.
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LINE_WIDTH = 16,
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/// Number of cached lines.
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NUMBER_OF_CACHED_LINES = 2000,
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/// Size of cache.
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CACHE_SIZE = LINE_WIDTH * NUMBER_OF_CACHED_LINES
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};
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private:
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/// Protect the class from being accidentally copied.
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CImageView(const CImageView& rImageView);
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/// Protect the class from being accidentally copied.
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CImageView& operator=(const CImageView& rImageView);
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/// Window procedure of image view window.
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static LRESULT CALLBACK ImageViewWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
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/// Draw window client area.
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void DrawImageView(HDC hdc, const RECT* prcPaint);
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/// Resize image view client area.
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void ResizeImageView(BOOL bIgnoreScrollPos);
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/// Scroll image view client area.
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void ScrollImageView(int nScrollBarType, int nScrollCode);
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/// Resize image.
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void ResizeImage(void);
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/// Initialize variables.
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void InitVars(void);
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/// Get client rectangle with no scrollbars.
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void GetBiggestClientRect(RECT* prcClient);
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/// Initial image handle.
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HBITMAP m_hBitmap;
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/// Initial bitmap size.
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SIZE m_szBitmapSize;
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/// Image handle with adjusted size.
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HBITMAP m_hAdjustedBitmap;
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/// Adjusted bitmap size.
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SIZE m_szAjustedBitmapSize;
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/// Window handle.
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HWND m_hwnd;
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/// Old static window procedure.
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WNDPROC m_pfnOldImageViewWndProc;
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/// Number of first cache lined.
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DWORD m_dwFirstCachedLine;
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/// Old window style.
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LONG m_lOldStyle;
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/// Number of wheel lines.
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int m_nWheelLines;
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};
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inline CImageView::CImageView(void) : m_hAdjustedBitmap(NULL)
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{
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InitVars();
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}
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inline CImageView::~CImageView(void)
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{
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ResetImage();
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}
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/**
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* @return image handle.
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*/
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inline HBITMAP CImageView::GetImageHandle(void) const
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{
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return m_hBitmap;
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}
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