// ----------------------------------------------------------------------------
void
text_buffer_add_text( text_buffer_t * self,
vec2 * pen, markup_t * markup,
const char * text, size_t length )
{
font_manager_t * manager = self->manager;
size_t i;
const char * prev_character = NULL;
if( markup == NULL )
{
return;
}
if( !markup->font )
{
markup->font = font_manager_get_from_markup( manager, markup );
if( ! markup->font )
{
fprintf( stderr, "Houston, we've got a problem !\n" );
exit( EXIT_FAILURE );
}
}
if( length == 0 )
{
length = utf8_strlen(text);
}
if( vertex_buffer_size( self->buffer ) == 0 )
{
self->origin = *pen;
self->line_left = pen->x;
self->bounds.left = pen->x;
self->bounds.top = pen->y;
}
else
{
if (pen->x < self->origin.x)
{
self->origin.x = pen->x;
}
if (pen->y != self->last_pen_y)
{
text_buffer_finish_line(self, pen, false);
}
}
for( i = 0; utf8_strlen( text + i ) && length; i += utf8_surrogate_len( text + i ) )
{
text_buffer_add_char( self, pen, markup, text + i, prev_character );
prev_character = text + i;
length--;
}
self->last_pen_y = pen->y;
}
// ------------------------------------------------------------ utf8_strlen ---
size_t
ftgl::utf8_strlen( const char* string )
{
const char* ptr = string;
size_t result = 0;
while (*ptr)
{
ptr += utf8_surrogate_len(ptr);
result++;
}
return result;
}