public void ReleaseGlyph()
{
if (m_pGlyph != null)
{
ANT.ANT_Done_Glyph(ref m_pGlyph);
m_pGlyph = null;
}
}
public ANTBitmapChar()
{
m_x = 0;
m_y = 0;
m_width = 0;
m_height = 0;
m_xOffset = 0;
m_yOffset = 0;
m_xAdvance = 0;
m_pGlyph = null;
}
void DoWork()
{
ANT_Library library;
ANT_Face face;
ANT_GlyphSlot slot;
ANT_Error error;
string filename;
string text;
int num_chars;
int glyph_index;
bool use_kerning;
int previous;
int pen_x, pen_y, n;
filename = Common.Example_AltNETType_FontFileName;
text = "AltNETType (kerning + centering)";// Common.Pangram;
num_chars = text.Length;
// ... initialize library ...
// ... create face object ...
// ... set character size ...
{
// initialize library
error = ANT.ANT_Init_AltNETType(out library);
// error handling omitted
// create face object
error = ANT.ANT_New_Face(library, filename, 0, out face);
// error handling omitted
if (error != ANT_Error.ANT_Err_Ok)
{
return;
}
// use 36pt at 100dpi
// set character size
error = ANT.ANT_Set_Char_Size(face, 36 * 64, 0, 96, 0);
// error handling omitted
}
// a small shortcut
slot = face.glyph;
// start at (0,0)
pen_x = 0;
pen_y = 0;
num_glyphs = 0;
use_kerning = ANT.ANT_HAS_KERNING(face);
previous = 0;
ANT_Vector delta = new ANT_Vector();
for (n = 0; n < num_chars; n++)
{
// convert character code to glyph index
glyph_index = ANT.ANT_Get_Char_Index(face, text[n]);
// retrieve kerning distance and move pen position
if (use_kerning &&
previous != 0 &&
glyph_index != 0)
{
ANT.ANT_Get_Kerning(face, previous, glyph_index, ANT_Kerning_Mode.ANT_KERNING_DEFAULT, delta);
pen_x += delta.x >> 6;
}
// store current pen position
if (pos[num_glyphs] == null)
{
pos[num_glyphs] = new ANT_Vector();
}
pos[num_glyphs].x = pen_x;
pos[num_glyphs].y = pen_y;
// load glyph image into the slot without rendering
error = ANT.ANT_Load_Glyph(face, glyph_index, ANT_LOAD.ANT_LOAD_DEFAULT);
if (error != ANT_Error.ANT_Err_Ok)
{
// ignore errors, jump to next glyph
continue;
}
// extract glyph image and store it in our table
error = ANT.ANT_Get_Glyph(face.glyph, out glyphs[num_glyphs]);
if (error != ANT_Error.ANT_Err_Ok)
{
// ignore errors, jump to next glyph
continue;
}
// increment pen position
pen_x += slot.advance.x >> 6;
// record current glyph index
previous = glyph_index;
// increment number of glyphs
num_glyphs++;
}
ANT_BBox string_bbox;
compute_string_bbox(out string_bbox);
int my_target_width = WIDTH;
int my_target_height = HEIGHT;
// compute string dimensions in integer pixels
int string_width = string_bbox.xMax - string_bbox.xMin;
int string_height = string_bbox.yMax - string_bbox.yMin;
// compute start pen position in 26.6 cartesian pixels
int start_x = ((my_target_width - string_width) / 2) * 64;
// int start_y = ((my_target_height - string_height) / 2) * 64;
// need to center bitmaps (not base line)
int start_y = ((my_target_height - string_height) / 2 - string_bbox.yMin) * 64;
ANT_Vector pen = new ANT_Vector();
for (n = 0; n < num_glyphs; n++)
{
ANT_Glyph image = glyphs[n];
pen.x = start_x + pos[n].x * 64;
pen.y = start_y + pos[n].y * 64;
error = ANT.ANT_Glyph_To_Bitmap(ref image, ANT_Render_Mode.ANT_RENDER_MODE_NORMAL, pen, false);
if (error == ANT_Error.ANT_Err_Ok)
{
ANT_BitmapGlyph bit = (ANT_BitmapGlyph)image;
draw_bitmap(bit.bitmap, bit.left, my_target_height - bit.top);
ANT.ANT_Done_Glyph(ref image);
}
}
//
show_image();
ANT.ANT_Done_Face(ref face);
ANT.ANT_Done_AltNETType(ref library);
}
public void SetGlyph(ANT_Glyph pGlyph)
{
m_pGlyph = pGlyph;
}
