void ocpnDC::DrawText( const wxString &text, wxCoord x, wxCoord y )
{
if( dc ) dc->DrawText( text, x, y );
else {
wxCoord w = 0;
wxCoord h = 0;
#ifdef __WXMAC__
wxBitmap tbmp(200, 200);
wxMemoryDC mac_dc(tbmp);
mac_dc.GetTextExtent(text, &w, &h, NULL, NULL, &m_font);
#else
GetTextExtent( text, &w, &h );
#endif
if( w && h ) {
/* create bitmap of appropriate size and select it */
wxBitmap bmp( w, h );
wxMemoryDC temp_dc;
temp_dc.SelectObject( bmp );
/* fill bitmap with black */
temp_dc.SetBackground( wxBrush( wxColour( 0, 0, 0 ) ) );
temp_dc.Clear();
/* draw the text white */
temp_dc.SetFont( m_font );
temp_dc.SetTextForeground( wxColour( 255, 255, 255 ) );
temp_dc.DrawText( text, 0, 0 );
temp_dc.SelectObject( wxNullBitmap );
/* use the data in the bitmap for alpha channel,
and set the color to text foreground */
wxImage image = bmp.ConvertToImage();
unsigned char *data = new unsigned char[image.GetWidth() * image.GetHeight()];
unsigned char *im = image.GetData();
for( int i = 0; i < w * h; i++ )
data[i] = im[3 * i];
glColor4ub( m_textforegroundcolour.Red(), m_textforegroundcolour.Green(),
m_textforegroundcolour.Blue(), 255 );
GLDrawBlendData( x, y, w, h, GL_ALPHA, data );
delete[] data;
}
}
}
void ocpnDC::DrawText( const wxString &text, wxCoord x, wxCoord y )
{
if( dc )
dc->DrawText( text, x, y );
#ifdef ocpnUSE_GL
else {
# ifdef ocpnUSE_GLES
return;
# endif
wxCoord w = 0;
wxCoord h = 0;
#ifdef __WXMAC__
wxBitmap tbmp(200, 200);
wxMemoryDC mac_dc(tbmp);
mac_dc.GetTextExtent(text, &w, &h, NULL, NULL, &m_font);
#else
GetTextExtent( text, &w, &h );
#endif
if( w && h ) {
/* create bitmap of appropriate size and select it */
wxBitmap bmp( w, h );
wxMemoryDC temp_dc;
temp_dc.SelectObject( bmp );
/* fill bitmap with black */
temp_dc.SetBackground( wxBrush( wxColour( 0, 0, 0 ) ) );
temp_dc.Clear();
/* draw the text white */
temp_dc.SetFont( m_font );
temp_dc.SetTextForeground( wxColour( 255, 255, 255 ) );
temp_dc.DrawText( text, 0, 0 );
temp_dc.SelectObject( wxNullBitmap );
/* use the data in the bitmap for alpha channel,
and set the color to text foreground */
wxImage image = bmp.ConvertToImage();
if( x < 0 || y < 0 ) { // Allow Drawing text which is offset to start off screen
int dx = ( x < 0 ? -x : 0 );
int dy = ( y < 0 ? -y : 0 );
w = bmp.GetWidth() - dx;
h = bmp.GetHeight() - dy;
/* picture is out of viewport */
if( w <= 0 || h <= 0 ) return;
image = image.GetSubImage( wxRect( dx, dy, w, h ) );
x += dx;
y += dy;
}
unsigned char *data = new unsigned char[w * h];
unsigned char *im = image.GetData();
if(im){
for( int i = 0; i < w * h; i++ )
data[i] = im[3 * i];
}
glColor4ub( m_textforegroundcolour.Red(), m_textforegroundcolour.Green(),
m_textforegroundcolour.Blue(), 255 );
GLDrawBlendData( x, y, w, h, GL_ALPHA, data );
delete[] data;
}
}
#endif
}
