Can someone help me please? I am trying to use freetype2 to render a
simple string using visual C++ 8 but I am facing a strange problem that
I could not find a way to solve it. Some letters appears correctly and
some appears leaning and cursive. And I changed the font size, I get
different results. CODE:
void InitFT2(HWND hwnd, char *Font)
{
FT_Library library; /* handle to library */
FT_Face face; /* handle to face object */
int error;
FT_GlyphSlot slot;
FT_Vector pen = {0,0};
FT_UInt glyph_index;
FT_Bitmap *BitMapGlyph;
FT_Vector delta;
double angle = ( 0.0 / 360 ) * 3.14159 * 2;
FT_Glyph glyph = NULL;
FT_BBox bbox;
//initialize the library
error = FT_Init_FreeType( &library );
if ( error )
MessageBox(NULL, "Error Initializing Freetype2 library", "FT_Init_FreeType()
error", MB_OK|MB_ICONEXCLAMATION);
//open a font file by creating a new face object
error = FT_New_Face( library, Font, 0, &face );
if ( error == FT_Err_Unknown_File_Format )
MessageBox(NULL, "the font file could be opened and read,\n but it appears that its
font format is unsupported", "FT_New_Face() error", MB_OK|MB_ICONEXCLAMATION);
else if ( error )
MessageBox(NULL, "another error code means that the font file could not be opened or
read,\n or simply that it is broken", "FT_New_Face() error",
MB_OK|MB_ICONEXCLAMATION);
if (error = FT_Set_Char_Size(face, (64*64), 0, 96, 0))
MessageBox(NULL, "Can not set charterer size", "FT_Set_Char_Size()
error", MB_OK|MB_ICONEXCLAMATION);
slot = face->glyph;
WCHAR *ttext = L"ABCDEFGHI";
int len = wcslen(ttext);
pen.x = 0 * 64;
pen.y = 0 * 64;
for (int a =0; a<len; a++)
{
//FT_Set_Transform( face, 0, &pen );
FT_Load_Char(face, ttext[a], FT_LOAD_RENDER);
FontRedner(hwnd, &slot->bitmap, pen.x+slot->bitmap_left ,
slot->bitmap_top );
FT_Done_Glyph( glyph );
pen.x += slot->advance.x >> 6;
//pen.y += slot->advance.y >> 6;
}
FT_Done_Face ( face );
FT_Done_FreeType( library );
}
void FontRedner(HWND hwnd, FT_Bitmap *ftBitmap, int x, int y)
{
UINT BufferSize = ftBitmap->width * ftBitmap->rows;
HDC srcDC = GetDC(hwnd);
HDC desDC = CreateCompatibleDC(srcDC);
char *ppvBITs; // Direct access to bits array in memory created with
CreateDIBSection()
ZeroMemory(&ppvBITs,sizeof(ftBitmap->buffer));
// Construct Bitmap info
BITMAPINFO *BitMapInfo = (BITMAPINFO*) malloc(sizeof(BITMAPINFOHEADER)+ 256
* sizeof(RGBQUAD));
BITMAPINFOHEADER *BitMapInfoHeader = (BITMAPINFOHEADER *) BitMapInfo;
BitMapInfoHeader->biSize = sizeof(BITMAPINFOHEADER);
BitMapInfoHeader->biWidth = ftBitmap->width;
BitMapInfoHeader->biHeight = (ftBitmap->rows)*-1; // * -1 to
reverse order
BitMapInfoHeader->biPlanes = 1;
BitMapInfoHeader->biBitCount = 8;
BitMapInfoHeader->biSizeImage = NULL;
BitMapInfoHeader->biCompression = BI_RGB;
RGBQUAD *paleta=(LPRGBQUAD)(((BYTE *)(BitMapInfo))+
sizeof(BITMAPINFOHEADER));
for (int i = 0; i < 256; i++)
{
paleta->rgbBlue = paleta->rgbGreen = paleta->rgbRed = (BYTE) i;
paleta->rgbReserved = 0;
paleta++;
}
HBITMAP hNewBitMap = CreateDIBSection(desDC,BitMapInfo,DIB_RGB_COLORS, (void
**)&ppvBITs,NULL, NULL);
// copy ft_bitmap bits to NewBitMap pointer
memcpy(ppvBITs, ftBitmap->buffer, BufferSize );
HBITMAP tempBitMapHandle = (HBITMAP)SelectObject(desDC,hNewBitMap);
BitBlt(srcDC, x, 0, ftBitmap->width, ftBitmap->rows, desDC, 0, 0, SRCCOPY);
DeleteObject(SelectObject(desDC, tempBitMapHandle));
DeleteDC(desDC);
ReleaseDC(hwnd, srcDC);
}
test_32p.jpg <http://www.nabble.com/file/p18917473/test_32p.jpg>
test_64p.jpg <http://www.nabble.com/file/p18917473/test_64p.jpg>
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