VC中OpenGL汉字显示解决方案

VC中OpenGL汉字显示解决方案

/// Head file

// MiscGL.h: interface for the CMiscGL class.

//

///////////////////////////////////////////////////////////////////// /

#if

!defined(AFX_MISCGL_H__F7358B14_F8AC_11D3_B5AC_0080C87978F2__INCLUDED _)

#define AFX_MISCGL_H__F7358B14_F8AC_11D3_B5AC_0080C87978F2__INCLUDED_

#if _MSC_VER > 1000

#pragma once

#endif // _MSC_VER > 1000

///////////////////////////////////////////////////////////////////// ///

/////

//

// OpenGL Misc function class

//

// Copyright (C) 2000 Risker. All rights are reserved.

//

// Description:

// 1. Chinese character output.

// 2. Texture managment. (略)

//

///////////////////////////////////////////////////////////////////// ///

/////

classCMiscGL

{

// Implementation

public:

CMiscGL();

virtual ~CMiscGL();

static void ShowStringOutline(CStringstrText, HFONT = NULL); staticintShowStringBitmap(LPCTSTR string, HFONT hFont = NULL,

BOOL bUs

eDisplayList = FALSE);

staticintGetTextBitmapBox( SIZE &sizeText, LPCTSTR string,

HFONT hFon

t);

};

#endif //

!defined(AFX_MISCGL_H__F7358B14_F8AC_11D3_B5AC_0080C87978F2__INCLUDED

/////////////////////////////

// CCP Files

// MiscGL.cpp: implementation of the CMiscGL class.

//

///////////////////////////////////////////////////////////////////// /

#include "stdafx.h"

#include "MiscGL.h"

#include "gl/gl.h"

#ifdef _DEBUG

#undef THIS_FILE

static char THIS_FILE[]=__FILE__;

#define new DEBUG_NEW

#endif

CMiscGL::CMiscGL()

{

}

CMiscGL::~CMiscGL()

{

}

voidCMiscGL::ShowStringOutline(CStringstrText, HFONT hFont /* = NULL */)

{

HDC hdc = wglGetCurrentDC();

ASSERT(hdc != NULL);

if (hFont == NULL)

{

hFont = (HFONT)::GetStockObject(SYSTEM_FONT);

}

ASSERT(hFont != NULL);

HFONT hOldFont = (HFONT)::SelectObject(hdc, hFont);

UCHAR * pChar= (UCHAR*)strText.GetBuffer(strText.GetLength()); intnListNum;

DWORD dwChar;

glPushMatrix();

for(int i = 0; i < strText.GetLength(); i++)

{

if(IsDBCSLeadByte((BYTE)pChar[i]))

{

dwChar = (WORD)((pChar[i] << 8) | pChar[i+1]);

i++;

}

else

dwChar = pChar[i];

nListNum = glGenLists(1);

GLYPHMETRICSFLOAT pgmf[1];

wglUseFontOutlines(hdc, dwChar, 1, nListNum, 0.0f, 0.1f,

WGL_FON

T_POLYGONS, pgmf);

glCallList(nListNum);

glDeleteLists(nListNum, 1);

}

glPopMatrix();

strText.ReleaseBuffer();

::SelectObject(hdc,hOldFont);

}

intCMiscGL::ShowStringBitmap(LPCTSTR lpszText,

HFONT hFont /* =

,

BOOL

bUseDisplayList /*=

FALSE */)

{

CBitmap bitmap;

BITMAP bm;

SIZE size;

UCHAR* pBmpBits;

HFONT hOldFont;

HDC hdc = wglGetCurrentDC();

if(!hFont) // use default system font

{

hFont = (HFONT)::GetStockObject(SYSTEM_FONT);

}

hOldFont = (HFONT)SelectObject(hdc, hFont);

::GetTextExtentPoint32(hdc, lpszText, strlen(lpszText), &size); bitmap.CreateBitmap(size.cx, size.cy, 1, 1, NULL);

HDC hMemDC= ::CreateCompatibleDC(hdc);

if(hMemDC)

{

HBITMAP hPrevBmp = (HBITMAP)SelectObject(hMemDC,

bitmap);

HFONT hPrevFont = (HFONT)SelectObject(hMemDC, hFont);

SetBkColor(hMemDC, RGB(0, 0, 0));

SetTextColor(hMemDC, RGB(255, 255, 255));

SetBkMode(hMemDC, OPAQUE);

TextOut(hMemDC, 0, 0, lpszText, strlen(lpszText));

// copy GDI bitmap to DIB

bitmap.GetBitmap(&bm);

size.cx = (bm.bmWidth + 31) & (~31);

size.cy = bm.bmHeight;

intbufsize = size.cy * (((bm.bmWidth + 31) & (~31)) /

8);

pBmpBits = new UCHAR[bufsize];

memset(pBmpBits, 0, sizeof(UCHAR)*bufsize);

BITMAPINFOHEADER bih;

RGBQUAD col[2];

}bic;

BITMAPINFO *binf = (BITMAPINFO *)&bic;

binf->bmiHeader.biSize = sizeof(binf->bmiHeader); binf->bmiHeader.biWidth = bm.bmWidth;

binf->bmiHeader.biHeight = bm.bmHeight;

binf->bmiHeader.biPlanes = 1;

binf->bmiHeader.biBitCount = 1;

binf->bmiHeader.biCompression = BI_RGB;

binf->bmiHeader.biSizeImage = bufsize;

binf->bmiHeader.biXPelsPerMeter = 1;

binf->bmiHeader.biYPelsPerMeter = 1;

binf->bmiHeader.biClrUsed = 0;

binf->bmiHeader.biClrImportant = 0;

::GetDIBits(hdc, bitmap, 0, bm.bmHeight, pBmpBits, binf, DIB_RGB

_COLORS);

SelectObject(hMemDC, hPrevBmp);

}

::DeleteDC(hMemDC);

// delete font from DC

SelectObject(hdc, hOldFont);

// display text

glPixelStorei(GL_UNPACK_ALIGNMENT, 1);

GLuintdisplist = 0;

if(bUseDisplayList)

{

displist = glGenLists(1);

glNewList(displist, GL_COMPILE);

glBitmap(size.cx, size.cy, 0.0, 2.0, size.cx+2.

0f, 0.0,p

BmpBits);

glEndList();

}

else;

glBitmap(size.cx, size.cy, 0.0, 2.0, size.cx+2.0f, 0.0,

);

deletepBmpBits;

returndisplist;

}

intCMiscGL::GetTextBitmapBox(SIZE&sizeText, LPCTSTR string, HFONT hFont)

{

ASSERT(hFont != NULL);

SIZE size;

HFONT hOldFont;

HDC hdc = wglGetCurrentDC();

hOldFont = (HFONT)SelectObject(hdc, hFont);

::GetTextExtentPoint32(hdc, string, strlen(string), &size); SelectObject(hdc, hOldFont);

sizeText.cx = (size.cx + 31) & (~31);

sizeText.cy = size.cy;

return 0;

}