Re: [Devel] Some characters don´t draw righ t

[David Turner]

Hello,

José Carlos García Rufino wrote:
> I have a function for drawing a character in the screen. I use 
> FT_Load_Char(...,FT_LOAD_RENDER) for rendering this character.
> The problem is that many charartes are drawing bad (B,C,D,F,H,...) and 
> others are drawind right( A,E,M,G,W, ...)
> I don't know the reason.
> I use W2000 pro and VC 6.0 SP5.
I believe that you need to adjust the bitmap "position" with the values
of "face->glyph.bitmap_left" and "face->glyph.bitmap_top". The 
documentation should have more details on this..

Hope this helps,

- David Turner
- The FreeType Project  (www.freetype.org)


>  
> The function is the next:
>  
>  
> void my_draw_bitmap(HDC hDC,FT_Bitmap b, int posx, int posy, int zoom)
> {
> int tam,filas,columnas;
> filas=b.rows;
> columnas=b.width;
> tam=filas*columnas;
> BITMAPINFO *bmi;
>  
>
> bmi = (BITMAPINFO *) malloc(sizeof(BITMAPINFOHEADER)
>                                   + 256 * sizeof(RGBQUAD));
>  
> bmi->bmiHeader.biSize        = sizeof(BITMAPINFOHEADER);
> bmi->bmiHeader.biWidth       = columnas;
> bmi->bmiHeader.biHeight      = -filas; // top-down image
> bmi->bmiHeader.biPlanes      = 1;
> bmi->bmiHeader.biBitCount    = 8;
> bmi->bmiHeader.biCompression = BI_RGB;
> bmi->bmiHeader.biSizeImage   = filas*columnas;
> bmi->bmiHeader.biXPelsPerMeter = 0;
> bmi->bmiHeader.biYPelsPerMeter = 0;
> bmi->bmiHeader.biClrUsed = 0;
> bmi->bmiHeader.biClrImportant = 0;
>  
>  
>  
>
> RGBQUAD *paleta=(LPRGBQUAD)(((BYTE *)(bmi))
>             + sizeof(BITMAPINFOHEADER));
>  
>
> for (int i = 0; i < 256; i++)
>  {
>     paleta->rgbBlue = paleta->rgbGreen = paleta->rgbRed = (BYTE) i;
>     paleta->rgbReserved = 0;
>     paleta++;
>     }
>  
>
> StretchDIBits(hDC,
>                   posx,      // x destino
>                   posy,          // y destino
>                   columnas*zoom,   // ancho destino
>                   filas*zoom,    // alto destino
>                   0,      // x fuente
>                   0,      // y fuente
>                   columnas,        // ancho fuente
>                   filas,        // alto fuente
>                   b.buffer,        // puntero a los bits
>                   bmi,                    // BITMAPINFO
>                   DIB_RGB_COLORS,   // options
>                   SRCCOPY);     // rop   
>  
> free(bmi);
> }