text.cpp

c++的一些源代码

	nWidth = sz.cx;
	s = szText;
	nSpaces = 0;
	while (*s)
	{
		if (*s == ' ')
			++nSpaces;
		++s;
	}
	int nPos = sz.cy;
	GetTextExtentPoint32 (hdc, szText, strlen (szText), &sz);
	if (nSpaces)
	{
		SetTextJustification (hdc, nWidth - sz.cx, nSpaces);
//		DrawText (hdc, szText, strlen (szText), rc, (4 << 8) | DT_TABSTOP | DT_EXPANDTABS);
		DrawText (hdc, szText, strlen (szText), rc, 0);
//		TextOut (hdc, rc->left, rc->top, szText, strlen (szText));
//		ExtTextOut (hdc, rc->left, rc->top, 0, NULL, szText, strlen (szText), NULL);
		SetTextJustification (hdc, 0, nSpaces);
	}
	else
	{
		int nExtra = nWidth - sz.cx;
		nExtra /= strlen (szText);
		if (nExtra)
		{
			SetTextCharacterExtra (hdc, nExtra);
			DrawText (hdc, szText, strlen (szText), rc, 0);
		}
		else
		{
			int *lpDx = new int [strlen (szText)];
			memset (lpDx, 0, sizeof (int) * strlen (szText));
			int nWidths[256];
			GetCharWidth32 (hdc, 0, 255, nWidths);
			for (unsigned int i = 0; i < strlen (szText); ++i)
				lpDx[i] = nWidths[szText[i]];
			for (i = 0; i < (unsigned int)(nWidth - sz.cx); ++i)
				lpDx[i] += 1; 
			ExtTextOut (hdc, rc->left, rc->top, 0, NULL, szText, strlen (szText), lpDx);
			delete [] lpDx;
		}
//		TextOut (hdc, 0, nPos, szText, strlen (szText));
//		SetTextCharacterExtra (hdc, -nExtra);
	}
	return (0);

}

void DoCharWidth32 (HDC hdc, HWND hWnd)
{
HFONT	hFont;
int		nWidths[26];
ABC		ABCWidths[26];

	hFont = CreatePointFont (120, "Times New Roman", hdc);
	HFONT hOldFont = (HFONT) SelectObject (hdc, hFont);
	GetCharWidth32 (hdc, 'A', 'Z', nWidths);
	GetCharABCWidths (hdc, 'A', 'Z', ABCWidths);
	SelectObject (hdc, hOldFont);
	DeleteObject (hFont);
}

HFONT CreatePointFont (int nPoints, char *szFace, HDC hdc)
{
LOGFONT lf;

	memset (&lf, '\0', sizeof (LOGFONT));
	lf.lfCharSet = DEFAULT_CHARSET;
	lf.lfClipPrecision = OUT_TT_PRECIS;
	lf.lfQuality = DEFAULT_QUALITY;
	lf.lfPitchAndFamily = DEFAULT_PITCH | FF_ROMAN;
	lf.lfHeight = nPoints;
	strcpy (lf.lfFaceName, szFace);
	return (CreatePointFontIndirect (&lf, hdc));
}

HFONT CreatePointFontIndirect (LOGFONT *lf, HDC hdc)
{
POINT ptView;

	SetViewportOrgEx (hdc, 0, 0, &ptView);
	POINT pt;
	pt.y = ::GetDeviceCaps(hdc, LOGPIXELSY) * lf->lfHeight;
	pt.x = ::GetDeviceCaps(hdc, LOGPIXELSX) * lf->lfHeight;
	pt.y /= 720;
	pt.x /= 720;
	DPtoLP(hdc, &pt, 1);
	POINT ptOrg = { 0, 0 };
	DPtoLP(hdc, &ptOrg, 1);
	lf->lfHeight = -abs(pt.y - ptOrg.y);
//	lf->lfWidth = abs(pt.x - ptOrg.x);
	SetViewportOrgEx (hdc, ptView.x, ptView.y, NULL);
	return (CreateFontIndirect (lf));
}

int GetSizeInPicas (int nPicas, HDC hdc)
{
//	nPicas *= 12;
	POINT pt;
	pt.y = ::GetDeviceCaps(hdc, LOGPIXELSX) * nPicas;
	pt.y /= 72;    // 72 points per inch
	DPtoLP(hdc, &pt, 1);
	POINT ptOrg = { 0, 0 };
	DPtoLP(hdc, &ptOrg, 1);
	return (abs(pt.y - ptOrg.y));
}

int CALLBACK  DrawGrayText (HDC hdc, LPARAM lParam, int wParam);

struct GRAYTEXT
{
	char *Text;
	int x;
	int y;
	int Width;
	int Depth;
	int Tabs;
	int *TabStops;
	int TabOrigin;
};

void DoTabbedText (HDC hdc, HWND hWnd)
{
HFONT hFont, hOldFont;
int nTabs[2], nLineWidth, i;
SIZE	size;
char *szText[] =
	{
	"Division\tSales\tReturns",
	"Widgets\t12654\t345",
	"Wombats\t96734\t3829",
	"Weasels\t4583\t485"
	};

	HBRUSH hBrush = CreateSolidBrush (0x00ff00ff);
	SelectObject (hdc, hBrush);
	hFont = CreatePointFont (120, "Times New Roman", hdc);
	hOldFont = (HFONT) SelectObject (hdc, hFont);
	GetTextExtentPoint32 (hdc, szText[0], strlen (szText[0]), &size);

	nLineWidth = GetSizeInPicas (180, hdc);
	nTabs[0] = nTabs[1] = nLineWidth / 3;
	MoveToEx (hdc, 0, size.cy, NULL);
	LineTo (hdc, nLineWidth, size.cy);
	TabbedTextOut (hdc, 0, 0, szText[0], strlen (szText[0]), 2, nTabs, 0);
	int nPoints = size.cy;
	size.cy += 3;
	for (i = 1; i < (sizeof(szText)/sizeof (char *)); ++i)
	{
		TabbedTextOut (hdc, 0, size.cy, szText[i], strlen (szText[i]), 2, nTabs, 0);
		size.cy += nPoints;
	}
	SelectObject (hdc, hOldFont);
	DeleteObject (hFont);
	DeleteObject (hBrush);
}

void DoRotateText (HDC hdc, HWND hWnd)
{
RECT rcClient;
POINT ptOrigin;
HFONT	hFont, hOldFont;
LOGFONT lf;
char	*szText = "  Hey! to the world  ";
int	nOldR2;
int	nOldAlign;

	GetClientRect (hWnd, &rcClient);
	SetViewportOrgEx (hdc, rcClient.right / 2, rcClient.bottom / 2, &ptOrigin);
	memset (&lf, '\0', sizeof (LOGFONT));
	lf.lfCharSet = DEFAULT_CHARSET;
	lf.lfClipPrecision = OUT_TT_PRECIS;
	lf.lfQuality = DEFAULT_QUALITY;
	lf.lfPitchAndFamily = DEFAULT_PITCH | FF_ROMAN;
	strcpy (lf.lfFaceName, "Times New Roman Bold");
	lf.lfHeight = 240;
	nOldAlign = SetTextAlign (hdc, TA_CENTER | TA_BOTTOM);
	hOldFont = (HFONT) GetStockObject (SYSTEM_FONT);
	nOldR2 = SetROP2(hdc, R2_XORPEN);
		lf.lfEscapement = 0;
		lf.lfOrientation = 0;
		lf.lfHeight = 240;
	for (int i = 0; i < 3601; i += 5)
	{
		hFont = CreatePointFontIndirect (&lf, hdc);
		SelectObject (hdc, hFont);
		TextOut (hdc, 0, 0, szText, strlen (szText));
		Sleep (5);
		TextOut (hdc, 0, 0, szText, strlen (szText));
		SelectObject (hdc, hOldFont);
		DeleteObject (hFont);
		lf.lfEscapement = i;
		lf.lfOrientation = i;
		lf.lfHeight = 240;
	}
	SetROP2(hdc, nOldR2);
	SetTextAlign (hdc, nOldAlign);
	SetViewportOrgEx (hdc, ptOrigin.x, ptOrigin.y, NULL);
	SelectObject (hdc, hOldFont);
	DeleteObject (hFont);
}

void DoPieChart (HWND hWnd, HDC hdc)
{
RECT    rcClient;
POINT   pOldOrigin;
POINT   pPoint[6];
SIZE	sizeText;
int nVals[] = {72, 22, 158, 104, 276};
int     nSum, i;
int		nOldBkMode;
HBRUSH  hBrush[5], hOldBrush;
HPEN    hPen, hOldPen;
double  fAngle, fRadius, fTextAngle[5];
COLORREF crColors[] = {0x00ffff00, 0x00ff00ff, 0x001111ff,
                       0x0000ffff, 0x0011ff11};
HFONT	hFont, hOldFont;
LOGFONT	lf;
char *szText[] =
	{
	"Widgets",
	"Wombats",
	"Weasels",
	"Wiseguys",
	"Wallabies"
	};

    GetClientRect (hWnd, &rcClient);
	if (rcClient.right > rcClient.bottom)
	    fRadius = rcClient.bottom / 3;
	else
	    fRadius = rcClient.right / 3;
    fAngle = PI / 4;		// Start at 45 degrees
    hBrush[0] = CreateSolidBrush (0x0);
    SetViewportOrgEx (hdc, rcClient.right / 2 + 6,
                      rcClient.bottom / 2 + 6, &pOldOrigin);
    hOldBrush = (HBRUSH) SelectObject (hdc, hBrush[0]);
    hPen = CreatePen (PS_SOLID, 2, 0);
    hOldPen = (HPEN) SelectObject (hdc, hPen);
    Ellipse (hdc, (int) -fRadius, (int) -fRadius,
                  (int) fRadius, (int) fRadius);
    SelectObject (hdc, hOldBrush);
    DeleteObject (hBrush[0]);
    SetViewportOrgEx (hdc, rcClient.right / 2,
                           rcClient.bottom / 2, NULL);

	memset (&lf, '\0', sizeof (LOGFONT));
	lf.lfCharSet = DEFAULT_CHARSET;
	lf.lfClipPrecision = OUT_TT_PRECIS;
	lf.lfQuality = DEFAULT_QUALITY;
	lf.lfPitchAndFamily = DEFAULT_PITCH | FF_ROMAN;
	strcpy (lf.lfFaceName, "Times New Roman Bold");
    nSum = 0;
    for (i = 0; i < 5; ++i)
    {
        hBrush[i] = CreateSolidBrush (crColors[i]);
        nSum += nVals[i];
    }
    hPen = CreatePen (PS_SOLID, 2, 0);
    hOldPen = (HPEN) SelectObject (hdc, hPen);
    hOldBrush = (HBRUSH) SelectObject (hdc, hBrush[0]);
	lf.lfHeight = 90;
	hFont = CreatePointFontIndirect (&lf, hdc);
	hOldFont = (HFONT) SelectObject (hdc, hFont);
	GetTextExtentPoint32 (hdc, szText[0], strlen (szText[0]), &sizeText);
	SelectObject (hdc, hOldFont);
	DeleteObject (hFont);
	double fTextOffset = asin (((double) sizeText.cy ) / fRadius);
	fTextOffset *= 10.0 * 57.28578;
    for (i = 0; i < 5; ++i)
    {
        pPoint[i].x = (long)(fRadius * cos (fAngle) + 0.5);
        pPoint[i].y = (long)(-fRadius * sin (fAngle) + 0.5);
		fTextAngle[i] = fAngle;
        fAngle += (nVals[i] * 2.0 * PI) / nSum;
		fTextAngle[i] += (fAngle - fTextAngle[i]) / 2;
		fTextAngle[i] *= 57.29578;
		fTextAngle[i] *= 10;
		fTextAngle[i] += fTextOffset;
    }
    pPoint[5] = pPoint[0];
	for (i = 0; i < 5; ++i)
	{
		SelectObject (hdc, hBrush[i]);
		Pie (hdc, (int) -fRadius, (int) -fRadius,
					(int) fRadius, (int) fRadius,
					pPoint[i].x, pPoint[i].y,
					pPoint[i+1].x, pPoint[i+1].y);
		SelectObject (hdc, hOldBrush);
		DeleteObject (hBrush[i]);
	}
	nOldBkMode = SetBkMode (hdc, TRANSPARENT);
	for (i = 0; i < 5; ++i)
	{
		if ((fTextAngle[i] > 899) && (fTextAngle[i] < 2700))
		{
			lf.lfEscapement = (int) fTextAngle[i] + 1800;
			lf.lfOrientation = (int) fTextAngle[i] + 1800;
		}
		else
		{
			lf.lfEscapement = (int) fTextAngle[i];
			lf.lfOrientation = (int) fTextAngle[i];
		}
		lf.lfHeight = 90;
		hFont = CreatePointFontIndirect (&lf, hdc);
		SelectObject (hdc, hFont);
		SIZE size;
		GetTextExtentPoint32 (hdc, szText[i], strlen (szText[i]), &size);
		POINT ptText;
		ptText.x =	(long)((fRadius * .9 - size.cx) * cos (fTextAngle[i]/572.9578) + 0.5);
		ptText.y = (long)(-(fRadius * .9 - size.cx) * sin (fTextAngle[i]/572.9578) + 0.5);
		if ((fTextAngle[i] > 899) && (fTextAngle[i] < 2700))
		{
			SetTextAlign (hdc, TA_RIGHT | TA_BOTTOM);
			TextOut (hdc, ptText.x, ptText.y, szText[i], strlen (szText[i]));
		}
		else
		{
			SetTextAlign (hdc, TA_LEFT | TA_TOP);
			TextOut (hdc, ptText.x, ptText.y, szText[i], strlen (szText[i]));
		}
		SelectObject (hdc, hOldFont);
		DeleteObject (hFont);
	}
	SetBkMode (hdc, nOldBkMode);
	SelectObject (hdc, hOldPen);
    DeleteObject (hPen);
    SetViewportOrgEx(hdc, pOldOrigin.x, pOldOrigin.y, NULL);
}