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
}
void ocpnDC::DrawBitmap( const wxBitmap &bitmap, wxCoord x, wxCoord y, bool usemask )
{
wxBitmap bmp;
if( x < 0 || y < 0 ) {
int dx = ( x < 0 ? -x : 0 );
int dy = ( y < 0 ? -y : 0 );
int w = bitmap.GetWidth() - dx;
int h = bitmap.GetHeight() - dy;
/* picture is out of viewport */
if( w <= 0 || h <= 0 ) return;
wxBitmap newBitmap = bitmap.GetSubBitmap( wxRect( dx, dy, w, h ) );
x += dx;
y += dy;
bmp = newBitmap;
} else {
bmp = bitmap;
}
if( dc ) dc->DrawBitmap( bmp, x, y, usemask );
else {
wxImage image = bmp.ConvertToImage();
int w = image.GetWidth(), h = image.GetHeight();
if( usemask ) {
unsigned char *d = image.GetData();
unsigned char *a = image.GetAlpha();
unsigned char mr, mg, mb;
if( !image.GetOrFindMaskColour( &mr, &mg, &mb ) && !a ) printf(
"trying to use mask to draw a bitmap without alpha or mask\n" );
unsigned char *e = new unsigned char[4 * w * h];
// int w = image.GetWidth(), h = image.GetHeight();
{
for( int y = 0; y < h; y++ )
for( int x = 0; x < w; x++ ) {
unsigned char r, g, b;
int off = ( y * image.GetWidth() + x );
r = d[off * 3 + 0];
g = d[off * 3 + 1];
b = d[off * 3 + 2];
e[off * 4 + 0] = r;
e[off * 4 + 1] = g;
e[off * 4 + 2] = b;
e[off * 4 + 3] =
a ? a[off] : ( ( r == mr ) && ( g == mg ) && ( b == mb ) ? 0 : 255 );
}
}
glColor4f( 1, 1, 1, 1 );
GLDrawBlendData( x, y, w, h, GL_RGBA, e );
delete[] ( e );
} else {
glRasterPos2i( x, y );
glPixelZoom( 1, -1 ); /* draw data from top to bottom */
glDrawPixels( w, h, GL_RGB, GL_UNSIGNED_BYTE, image.GetData() );
glPixelZoom( 1, 1 );
}
}
}
void ocpnDC::DrawText( const wxString &text, wxCoord x, wxCoord y )
{
if( dc )
dc->DrawText( text, x, y );
#ifdef ocpnUSE_GL
else {
wxCoord w = 0;
wxCoord h = 0;
#ifndef __WXMAC__
m_texfont.Build( m_font ); // make sure the font is ready
m_texfont.GetTextExtent(text, &w, &h);
if( w && h ) {
glEnable( GL_BLEND );
glEnable( GL_TEXTURE_2D );
glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
glPushMatrix();
glTranslatef(x, y, 0);
glColor3ub( m_textforegroundcolour.Red(), m_textforegroundcolour.Green(),
m_textforegroundcolour.Blue() );
m_texfont.RenderString(text);
glPopMatrix();
glDisable( GL_TEXTURE_2D );
glDisable( GL_BLEND );
}
#else
wxScreenDC sdc;
sdc.GetTextExtent(text, &w, &h, NULL, NULL, &m_font);
/* 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
}
#endif
}
