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Capture an HTML document as an image

, , 19 May 2004 CPOL
Capturing HTML documents as images
//----------------------------------------------------------------------------
// N O L D U S   I N F O R M A T I O N   T E C H N O L O G Y   B . V .
//----------------------------------------------------------------------------
// Filename:      BitmapDC.h
// Project:       EthoVision
// Module:        Visualization
// Programmer:    Anneke Sicherer-Roetman
// Version:       1.00
// Revision Date: 08-10-1999
//----------------------------------------------------------------------------
// Description:   Declaration of class BitmapDC
//----------------------------------------------------------------------------
// Revision history:
// 08-10-1999 - First implementation
//----------------------------------------------------------------------------
// Bugs: ........
//----------------------------------------------------------------------------
// @doc
//----------------------------------------------------------------------------
#if !defined(AFX_BITMAPDC_H__CD3E3864_7D7C_11D3_A615_0060085FE616__INCLUDED_)
#define AFX_BITMAPDC_H__CD3E3864_7D7C_11D3_A615_0060085FE616__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

// draws bitmap at specified point in specified device context
void DrawBitmap(const CBitmap *bitmap, const CDC *pDC, const CPoint &point);

// draws bitmap centered in specified rectangle in specified device context
void DrawBitmap(const CBitmap *bitmap, const CDC *pDC, const CRect &rect, 
                bool stretch = false);

//----------------------------------------------------------------------------
// @class         CBitmapDC |
//                memory bitmap device context
// @base          public | CDC
//----------------------------------------------------------------------------
// @prog 
// Anneke Sicherer-Roetman
// @revs 
// 08-10-1999 - First implementation
//----------------------------------------------------------------------------
// @ex The memory bitmap device context can be used in two ways: |
//  // usage 1 : make complete bitmap and use afterwards.
//  // make memory bitmap DC, draw in it, close DC, 
//  // draw resulting bitmap, delete bitmap
//  CBitmapDC bitmapDC_1(50, 50, pDC);
//  CAutoPen pen1(&bitmapDC_1, PS_SOLID, 1, RGB(0,0,255));
//  bitmapDC_1.Rectangle(0, 0, 50, 50);
//  bitmapDC_1.MoveTo(0,50);
//  bitmapDC_1.LineTo(50,0);
//  CBitmap *pbmp = bitmapDC_1.Close();
//  DrawBitmap(pbmp, pDC, CPoint(10, 10));
//  delete pbmp;
//  pDC->TextOut(10, 70, "draw CBitmap");
//
//  // usage 2 : use DC as scratch pad and blit whenever needed.
//  // make memory bitmap DC, draw in it, blit DC to screen,
//  // use automatic cleanup in CBitmapDC's destructor
//  CBitmapDC bitmapDC_2(50, 50, pDC);
//  CAutoPen pen2(&bitmapDC_2, PS_SOLID, 1, RGB(255,0,0));
//  bitmapDC_2.Rectangle(0, 0, 50, 50);
//  bitmapDC_2.MoveTo(0, 0);
//  bitmapDC_2.LineTo(50, 50);
//  pDC->BitBlt(200, 10, 50, 50, &bitmapDC_2, 0, 0, SRCCOPY);
//  pDC->TextOut(200, 70, "blit CBitmapDC");
//----------------------------------------------------------------------------
// @todo 
//----------------------------------------------------------------------------
//lint -save -e1712 Default constructor not defined
class CBitmapDC : public CDC
{

  // @access Public Member Functions and Variables
public:

  // @cmember
  // constructor
  CBitmapDC(int width, int height, CDC *pOrigDC = NULL, COLORREF background = RGB(255,255,255));

  // @cmember
  // destructor, destroys bitmap if it has not been released with <mf CBitmapDC::GetFinalBitmap>
  virtual ~CBitmapDC();

  // @cmember
  // returns pointer to memory bitmap and prevents further use
  CBitmap *Close();

  // @access Private Member Functions and Variables
private:

  CBitmap *m_pBitmap; // @cmember pointer to memory bitmap
  CBitmap *m_pOldBmp; // @cmember pointer to old DC bitmap
};
//lint -restore

//----------------------------------------------------------------------------

//{{AFX_INSERT_LOCATION}}
// Microsoft Visual C++ will insert additional declarations immediately before the previous line.

#endif // !defined(AFX_BITMAPDC_H__CD3E3864_7D7C_11D3_A615_0060085FE616__INCLUDED_)

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This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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About the Authors

Rob Manderson

United States United States
I've been programming for 35 years - started in machine language on the National Semiconductor SC/MP chip, moved via the 8080 to the Z80 - graduated through HP Rocky Mountain Basic and HPL - then to C and C++ and now C#.
 
I used (30 or so years ago when I worked for Hewlett Packard) to repair HP Oscilloscopes and Spectrum Analysers - for a while there I was the one repairing DC to daylight SpecAns in the Asia Pacific area.
 
Afterward I was the fourth team member added to the Australia Post EPOS project at Unisys Australia. We grew to become an A$400 million project. I wrote a few device drivers for the project under Microsoft OS/2 v 1.3 - did hardware qualification and was part of the rollout team dealing directly with the customer.
 
Born and bred in Melbourne Australia, now living in Scottsdale Arizona USA, became a US Citizen on September 29th, 2006.
 
I work for a medical insurance broker, learning how to create ASP.NET websites in VB.Net and C#. It's all good.
 
Oh, I'm also a Kentucky Colonel. http://www.kycolonels.org

Vadim Tabakman
Web Developer
United States United States
C/C++ Programmer. OS of choice is any Win32 OS. Started working in the gaming industry, programming mainframe VOS OS and dealing with Slot machine serials comms protocols, creating test-tools and line monitoring software on W2K.
 
Moved on to working in a small software company that worked with electronic forms. Glad I spent most of my time there learning new technologies and increasing my programming skills. I wasn't going to learning anything from anyone there. Well, except the odd one person who is now a CPian.
 
Now working in a company that works with Security, Identity and Trust Solutions. Learning lots about encryption, signing, digital signatures, hashing and all sorts of new buzz words. It might as well be another language.

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