怎么绘制字体能让任意方向 附代码

[lwjnadaxgo]

long CxImage::DrawStringEx(HDC hdc, long x, long y, CXTEXTINFO *pTextType, bool bSetAlpha )
{
if (!IsValid())
return -1;

//get the background
HDC pDC;
if (hdc) pDC=hdc; else pDC = ::GetDC(0);
if (pDC==NULL) return 0;
HDC TmpDC=CreateCompatibleDC(pDC);
if (hdc==NULL) ::ReleaseDC(0, pDC);
if (TmpDC==NULL) return 0;

//choose the font
HFONT m_Font;
m_Font=CreateFontIndirect( &pTextType->lfont );

// get colors in RGBQUAD
RGBQUAD p_forecolor = RGBtoRGBQUAD(pTextType->fcolor);
RGBQUAD p_backcolor = RGBtoRGBQUAD(pTextType->bcolor);

// check alignment and re-set default if necessary
if ( pTextType->align != DT_CENTER &&
pTextType->align != DT_LEFT &&
pTextType->align != DT_RIGHT )
pTextType->align = DT_CENTER;

// check rounding radius and re-set default if necessary
if ( pTextType->b_round > 50 )
pTextType->b_round = 10;

// check opacity and re-set default if necessary
if ( pTextType->b_opacity > 1. || pTextType->b_opacity < .0 )
pTextType->b_opacity = 0.;

//select the font in the dc
HFONT pOldFont=NULL;
if (m_Font)
pOldFont = (HFONT)SelectObject(TmpDC,m_Font);
else
pOldFont = (HFONT)SelectObject(TmpDC,GetStockObject(DEFAULT_GUI_FONT));

//Set text color
SetTextColor(TmpDC,RGB(255,255,255));
SetBkColor(TmpDC,RGB(0,0,0));
SetBkMode(TmpDC,OPAQUE);
//Set text position;
RECT pos = {0,0,0,0};

// get text length and number of lines
long i=0, numlines=1, len=(long)_tcsclen(pTextType->text);
while (i<len)
{
if ( pTextType->text[i++]==13 )
numlines++;
}

::DrawText(TmpDC, pTextType->text, len, &pos, /*DT_EDITCONTROL|DT_EXTERNALLEADING|*/DT_NOPREFIX | DT_CALCRECT );

// increase only if it's really italics, and only one line height
if ( pTextType->lfont.lfItalic )
pos.right += pos.bottom/2/numlines;

// background frame and rounding radius
int frame = 0, roundR = 0;
if ( pTextType->opaque )
{
roundR= (int)(pos.bottom/numlines * pTextType->b_round / 100 ) ;
frame = (int)(/*3.5 + */0.29289*roundR ) ;
pos.right += pos.bottom/numlines/3 ; // JUST FOR BEAUTY
}

//Preparing Bitmap Info
long width=pos.right +frame*2;
long height=pos.bottom +frame*2;
BITMAPINFO bmInfo;
memset(&bmInfo.bmiHeader,0,sizeof(BITMAPINFOHEADER));
bmInfo.bmiHeader.biSize=sizeof(BITMAPINFOHEADER);
bmInfo.bmiHeader.biWidth=width;
bmInfo.bmiHeader.biHeight=height;
bmInfo.bmiHeader.biPlanes=1;
bmInfo.bmiHeader.biBitCount=24;
BYTE *pbase; //points to the final dib

HBITMAP TmpBmp=CreateDIBSection(TmpDC,&bmInfo,DIB_RGB_COLORS,(void**)&pbase,0,0);
HGDIOBJ TmpObj=SelectObject(TmpDC,TmpBmp);
memset(pbase,0,height*((((24 * width) + 31) / 32) * 4));

::DrawText(TmpDC,pTextType->text,len, &pos, /*DT_EDITCONTROL|DT_EXTERNALLEADING|*/DT_NOPREFIX| pTextType->align );

CxImage itext;
itext.CreateFromHBITMAP(TmpBmp);
y=head.biHeight-y-1;

itext.Negative();

if (pTextType->smooth==FALSE){
itext.Threshold(128);
} else {
//itext.TextBlur();
}

//move the insertion point according to alignment type
// DT_CENTER: cursor points to the center of text rectangle
// DT_RIGHT: cursor points to right side end of text rectangle
// DT_LEFT: cursor points to left end of text rectangle
if ( pTextType->align == DT_CENTER )
x -= width/2;
else if ( pTextType->align == DT_RIGHT )
x -= width;
if (x<0) x=0;

//draw the background first, if it exists
long ix,iy;
if ( pTextType->opaque )
{
int ixf=0;
for (ix=0;ix<width;ix++)
{
if ( ix<=roundR )
ixf = (int)(.5+roundR-sqrt((float)(roundR*roundR-(ix-roundR)*(ix-roundR))));
else if ( ix>=width-roundR-1 )
ixf = (int)(.5+roundR-sqrt((float)(roundR*roundR-(width-1-ix-roundR)*(width-1-ix-roundR))));
else
ixf=0;

for (iy=0;iy<height;iy++)
{
if ( (ix<=roundR && ( iy > height-ixf-1 || iy < ixf )) ||
(ix>=width-roundR-1 && ( iy > height-ixf-1 || iy < ixf )) )
continue;
else
if ( pTextType->b_opacity > 0.0 && pTextType->b_opacity < 1.0 )
{
RGBQUAD bcolor, pcolor;
// calculate a transition color from original image to background color:
pcolor = GetPixelColor(x+ix,y+iy);
bcolor.rgbBlue = (unsigned char)(pTextType->b_opacity * pcolor.rgbBlue + (1.0-pTextType->b_opacity) * p_backcolor.rgbBlue );
bcolor.rgbRed = (unsigned char)(pTextType->b_opacity * pcolor.rgbRed + (1.0-pTextType->b_opacity) * p_backcolor.rgbRed ) ;
bcolor.rgbGreen = (unsigned char)(pTextType->b_opacity * pcolor.rgbGreen + (1.0-pTextType->b_opacity) * p_backcolor.rgbGreen ) ;
bcolor.rgbReserved = 0;
SetPixelColor(x+ix,y+iy,bcolor,bSetAlpha);
}
else
SetPixelColor(x+ix,y+iy,p_backcolor,bSetAlpha);
}
}
}

// draw the text itself
for (ix=0;ix<width;ix++)
{
for (iy=0;iy<height;iy++)
{
RGBQUAD pcolor = GetPixelColor(x+ix,y+iy);
RGBQUAD tcolor = itext.GetPixelColor(ix,iy);
if (tcolor.rgbBlue!=255){
float a = tcolor.rgbBlue/255.0f;
pcolor.rgbBlue = (unsigned char)(a * (pcolor.rgbBlue - p_forecolor.rgbBlue) + p_forecolor.rgbBlue );
pcolor.rgbRed = (unsigned char)(a * (pcolor.rgbRed - p_forecolor.rgbRed) + p_forecolor.rgbRed ) ;
pcolor.rgbGreen = (unsigned char)(a * (pcolor.rgbGreen - p_forecolor.rgbGreen) + p_forecolor.rgbGreen );
pcolor.rgbReserved = 0;
SetPixelColor(x+ix+frame,y+iy-frame,pcolor,bSetAlpha);
}
}
}

if (pOldFont) SelectObject(TmpDC,pOldFont);
DeleteObject(m_Font);
DeleteObject(SelectObject(TmpDC,TmpObj));
DeleteDC(TmpDC);
return 1;
}
现在只能水平方向，-------TEXT------------。我想能不能
-
-
-
T
E
X
T
-
-
大致是这意思 这代码也不是我写的没完全看懂啊 是不是他已经生成位图了 能调整这图吗 我现在在做一个直线的测量 ---------距离-------- 水平的还行斜的就不行了 求教啊

[Simao]

CreateFont( int nHeight, int nWidth, int nEscapement, int nOrientation, int nWeight, BYTE bItalic, BYTE bUnderline, BYTE cStrikeOut, BYTE nCharSet, BYTE nOutPrecision, BYTE nClipPrecision, BYTE nQuality, BYTE nPitchAndFamily, LPCTSTR lpszFacename );

nEscapement

Specifies the angle (in 0.1-degree units) between the escapement vector and the x-axis of the display surface. The escapement vector is the line through the origins of the first and last characters on a line. The angle is measured counterclockwise from the x-axis.
就可以了

[lwjnadaxgo]

能写个具体用法 啊 看不懂啊！ 这个创建字体吧？

[野鬼灬]

收藏一下

[lwjnadaxgo]

晕啊 顶起啊 牛人们呢 来指点一下啊

[lwjnadaxgo]

晚上回去就给你分 这个不错啊

[lwjnadaxgo]

这个看来有难度啊 牛人们指点一下啊

[lwjnadaxgo]

这我的绘制过程 字是赚了但是后面背景方框没转啊大大指点一下啊

long DrawStringEx(HDC hdc, long x, long y, CXTEXTINFO *pTextType, bool bSetAlpha )
{
if (!IsValid())
return -1;

//get the background
HDC pDC;
if (hdc) pDC=hdc; else pDC = ::GetDC(0);
if (pDC==NULL) return 0;
HDC TmpDC=CreateCompatibleDC(pDC);
if (hdc==NULL) ::ReleaseDC(0, pDC);
if (TmpDC==NULL) return 0;

//choose the font
HFONT m_Font;
pTextType->lfont.lfEscapement=90;
m_Font=CreateFontIndirect( &pTextType->lfont );

// get colors in RGBQUAD
RGBQUAD p_forecolor = RGBtoRGBQUAD(pTextType->fcolor);
RGBQUAD p_backcolor = RGBtoRGBQUAD(pTextType->bcolor);

// check alignment and re-set default if necessary
if ( pTextType->align != DT_CENTER &&
pTextType->align != DT_LEFT &&
pTextType->align != DT_RIGHT )
pTextType->align = DT_CENTER;

// check rounding radius and re-set default if necessary
if ( pTextType->b_round > 50 )
pTextType->b_round = 10;

// check opacity and re-set default if necessary
if ( pTextType->b_opacity > 1. || pTextType->b_opacity < .0 )
pTextType->b_opacity = 0.;

//select the font in the dc
HFONT pOldFont=NULL;
if (m_Font)
pOldFont = (HFONT)SelectObject(TmpDC,m_Font);
else
pOldFont = (HFONT)SelectObject(TmpDC,GetStockObject(DEFAULT_GUI_FONT));

//Set text color
SetTextColor(TmpDC,RGB(255,255,255));
SetBkColor(TmpDC,RGB(0,0,0));
SetBkMode(TmpDC,OPAQUE);
//Set text position;
RECT pos = {0,0,0,0};

// get text length and number of lines
long i=0, numlines=1, len=(long)_tcsclen(pTextType->text);
while (i<len)
{
if ( pTextType->text[i++]==13 )
numlines++;
}

::DrawText(TmpDC, pTextType->text, len, &pos, /*DT_EDITCONTROL|DT_EXTERNALLEADING|*/DT_NOPREFIX | DT_CALCRECT );

// increase only if it's really italics, and only one line height
if ( pTextType->lfont.lfItalic )
pos.right += pos.bottom/2/numlines;

// background frame and rounding radius
int frame = 0, roundR = 0;
if ( pTextType->opaque )
{
roundR= (int)(pos.bottom/numlines * pTextType->b_round / 100 ) ;
frame = (int)(/*3.5 + */0.29289*roundR ) ;
pos.right += pos.bottom/numlines/3 ; // JUST FOR BEAUTY
}

//Preparing Bitmap Info
long width=pos.right +frame*2;
long height=pos.bottom +frame*2;
BITMAPINFO bmInfo;
memset(&bmInfo.bmiHeader,0,sizeof(BITMAPINFOHEADER));
bmInfo.bmiHeader.biSize=sizeof(BITMAPINFOHEADER);
bmInfo.bmiHeader.biWidth=width;
bmInfo.bmiHeader.biHeight=height;
bmInfo.bmiHeader.biPlanes=1;
bmInfo.bmiHeader.biBitCount=24;
BYTE *pbase; //points to the final dib

HBITMAP TmpBmp=CreateDIBSection(TmpDC,&bmInfo,DIB_RGB_COLORS,(void**)&pbase,0,0);
HGDIOBJ TmpObj=SelectObject(TmpDC,TmpBmp);
memset(pbase,0,height*((((24 * width) + 31) / 32) * 4));

::DrawText(TmpDC,pTextType->text,len, &pos, /*DT_EDITCONTROL|DT_EXTERNALLEADING|*/DT_NOPREFIX| pTextType->align );

CxImage itext;
itext.CreateFromHBITMAP(TmpBmp);
y=head.biHeight-y-1;

itext.Negative();

if (pTextType->smooth==FALSE){
itext.Threshold(128);
} else {
//itext.TextBlur();
}

//move the insertion point according to alignment type
// DT_CENTER: cursor points to the center of text rectangle
// DT_RIGHT: cursor points to right side end of text rectangle
// DT_LEFT: cursor points to left end of text rectangle
if ( pTextType->align == DT_CENTER )
x -= width/2;
else if ( pTextType->align == DT_RIGHT )
x -= width;
if (x<0) x=0;

//draw the background first, if it exists
long ix,iy;
if ( pTextType->opaque )
{
int ixf=0;
for (ix=0;ix<width;ix++)
{
if ( ix<=roundR )
ixf = (int)(.5+roundR-sqrt((float)(roundR*roundR-(ix-roundR)*(ix-roundR))));
else if ( ix>=width-roundR-1 )
ixf = (int)(.5+roundR-sqrt((float)(roundR*roundR-(width-1-ix-roundR)*(width-1-ix-roundR))));
else
ixf=0;

for (iy=0;iy<height;iy++)
{
if ( (ix<=roundR && ( iy > height-ixf-1 || iy < ixf )) ||
(ix>=width-roundR-1 && ( iy > height-ixf-1 || iy < ixf )) )
continue;
else
if ( pTextType->b_opacity > 0.0 && pTextType->b_opacity < 1.0 )
{
RGBQUAD bcolor, pcolor;
// calculate a transition color from original image to background color:
pcolor = GetPixelColor(x+ix,y+iy);
bcolor.rgbBlue = (unsigned char)(pTextType->b_opacity * pcolor.rgbBlue + (1.0-pTextType->b_opacity) * p_backcolor.rgbBlue );
bcolor.rgbRed = (unsigned char)(pTextType->b_opacity * pcolor.rgbRed + (1.0-pTextType->b_opacity) * p_backcolor.rgbRed ) ;
bcolor.rgbGreen = (unsigned char)(pTextType->b_opacity * pcolor.rgbGreen + (1.0-pTextType->b_opacity) * p_backcolor.rgbGreen ) ;
bcolor.rgbReserved = 0;
SetPixelColor(x+ix,y+iy,bcolor,bSetAlpha);
}
else
SetPixelColor(x+ix,y+iy,p_backcolor,bSetAlpha);
}
}
}

// draw the text itself
for (ix=0;ix<width;ix++)
{
for (iy=0;iy<height;iy++)
{
RGBQUAD pcolor = GetPixelColor(x+ix,y+iy);
RGBQUAD tcolor = itext.GetPixelColor(ix,iy);
if (tcolor.rgbBlue!=255){
float a = tcolor.rgbBlue/255.0f;
pcolor.rgbBlue = (unsigned char)(a * (pcolor.rgbBlue - p_forecolor.rgbBlue) + p_forecolor.rgbBlue );
pcolor.rgbRed = (unsigned char)(a * (pcolor.rgbRed - p_forecolor.rgbRed) + p_forecolor.rgbRed ) ;
pcolor.rgbGreen = (unsigned char)(a * (pcolor.rgbGreen - p_forecolor.rgbGreen) + p_forecolor.rgbGreen );
pcolor.rgbReserved = 0;
SetPixelColor(x+ix+frame,y+iy-frame,pcolor,bSetAlpha);
//SetPixelColor(x+ix+frame,y+iy-frame,p_forecolor,bSetAlpha);
}
}
}

//cleanup
if (pOldFont) SelectObject(TmpDC,pOldFont);
DeleteObject(m_Font);
DeleteObject(SelectObject(TmpDC,TmpObj));
DeleteDC(TmpDC);
return 1;
}

下面是上面用到的结构


typedef struct tagCxTextInfo
{
#if defined (_WIN32_WCE)
TCHAR text[256]; ///< text for windows CE
#else
TCHAR text[4096]; ///< text (char -> TCHAR for UNICODE [Cesar M])
#endif
LOGFONT lfont; ///< font and codepage data
COLORREF fcolor; ///< foreground color
long align; ///< DT_CENTER, DT_RIGHT, DT_LEFT aligment for multiline text
BYTE smooth; ///< text smoothing option. Default is false.
BYTE opaque; ///< text has background or hasn't. Default is true.
///< data for background (ignored if .opaque==FALSE)
COLORREF bcolor; ///< background color
float b_opacity; ///< opacity value for background between 0.0-1.0 Default is 0. (opaque)
BYTE b_outline; ///< outline width for background (zero: no outline)
BYTE b_round; ///< rounding radius for background rectangle. % of the height, between 0-50. Default is 10.
///< (backgr. always has a frame: width = 3 pixel + 10% of height by default.)
} CXTEXTINFO;

[bulijun1987]

新创建一种字体，字体的结构里面有角度，你可以设置这个成员变量，来改变文字方向

[lwjnadaxgo]

- - 我这个是有背景 就好比我在一张有颜色的纸写字 我现在想调整整个纸的角度

[lwjnadaxgo]

字体能变是 但是我要背景也跟着变

[lwjnadaxgo]

背景是长方形的 代码里有写的

[Eleven]

在矩形框中旋转方式显示文字

[Eleven]

void CXXView::OnDraw(CDC* pDC)
{
CXXDoc* pDoc = GetDocument();
ASSERT_VALID(pDoc);

CFont* pFont = pDC->GetCurrentFont();
LOGFONT logFont ;
pFont->GetLogFont(&logFont);
logFont.lfEscapement = 900 ;//900/10 = 90
HFONT hFont = CreateFontIndirect(&logFont); 
pDC->SelectObject(hFont);
pDC->TextOut(200,200,_T("Hello,World!!"));
}