void Text::Draw(Bitmap& dest, int x, int y, Color color, std::string const& text) {
if (text.length() == 0) return;
FontRef font = dest.GetFont();
int next_glyph_pos = 0;
for (boost::u8_to_u32_iterator<std::string::const_iterator>
c(text.begin(), text.begin(), text.end()),
end(text.end(), text.begin(), text.end()); c != end; ++c) {
boost::u8_to_u32_iterator<std::string::const_iterator> next_c_it = boost::next(c);
std::string const glyph(c.base(), next_c_it.base());
if (*c == '\n') {
y += font->GetSize(glyph).height;
next_glyph_pos = 0;
continue;
}
Rect next_glyph_rect(x + next_glyph_pos, y, 0, 0);
font->Render(dest, next_glyph_rect.x, next_glyph_rect.y, color, *c);
next_glyph_pos += font->GetSize(glyph).width;
}
}
void Text::Draw(Bitmap& dest, int x, int y, int color, std::string const& text, Text::Alignment align) {
if (text.length() == 0) return;
FontRef font = dest.GetFont();
Rect dst_rect = font->GetSize(text);
switch (align) {
case Text::AlignCenter:
dst_rect.x = x - dst_rect.width / 2; break;
case Text::AlignRight:
dst_rect.x = x - dst_rect.width; break;
case Text::AlignLeft:
dst_rect.x = x; break;
default: assert(false);
}
dst_rect.y = y;
dst_rect.width += 1; dst_rect.height += 1; // Need place for shadow
if (dst_rect.IsOutOfBounds(dest.GetWidth(), dest.GetHeight())) return;
BitmapRef text_surface; // Complete text will be on this surface
text_surface = Bitmap::Create(dst_rect.width, dst_rect.height, true);
text_surface->SetTransparentColor(dest.GetTransparentColor());
text_surface->Clear();
// Load the system file for the shadow and text color
BitmapRef system = Cache::System(Data::system.system_name);
// Load the exfont-file
BitmapRef exfont = Cache::Exfont();
// Get the Shadow color
Color shadow_color(Cache::system_info.sh_color);
// If shadow is pure black, increase blue channel
// so it doesn't become transparent
if ((shadow_color.red == 0) &&
(shadow_color.green == 0) &&
(shadow_color.blue == 0) ) {
if (text_surface->bytes() >= 3) {
shadow_color.blue++;
} else {
shadow_color.blue += 8;
}
}
// Where to draw the next glyph (x pos)
int next_glyph_pos = 0;
// The current char is an exfont
bool is_exfont = false;
// This loops always renders a single char, color blends it and then puts
// it onto the text_surface (including the drop shadow)
for (boost::u8_to_u32_iterator<std::string::const_iterator>
c(text.begin(), text.begin(), text.end()),
end(text.end(), text.begin(), text.end()); c != end; ++c) {
Rect next_glyph_rect(next_glyph_pos, 0, 0, 0);
boost::u8_to_u32_iterator<std::string::const_iterator> next_c_it = boost::next(c);
uint32_t const next_c = std::distance(c, end) > 1? *next_c_it : 0;
// ExFont-Detection: Check for A-Z or a-z behind the $
if (*c == '$' && std::isalpha(next_c)) {
int exfont_value = -1;
// Calculate which exfont shall be rendered
if (islower(next_c)) {
exfont_value = 26 + next_c - 'a';
} else if (isupper(next_c)) {
exfont_value = next_c - 'A';
} else { assert(false); }
is_exfont = true;
BitmapRef mask = Bitmap::Create(12, 12, true);
// Get exfont from graphic
Rect const rect_exfont((exfont_value % 13) * 12, (exfont_value / 13) * 12, 12, 12);
// Create a mask
mask->Clear();
mask->Blit(0, 0, *exfont, rect_exfont, 255);
// Get color region from system graphic
Rect clip_system(8+16*(color%10), 4+48+16*(color/10), 6, 12);
BitmapRef char_surface = Bitmap::Create(mask->GetWidth(), mask->GetHeight(), true);
char_surface->SetTransparentColor(dest.GetTransparentColor());
char_surface->Clear();
// Blit gradient color background (twice because of full glyph)
char_surface->Blit(0, 0, *system, clip_system, 255);
char_surface->Blit(6, 0, *system, clip_system, 255);
// Blit mask onto background
char_surface->MaskBlit(0, 0, *mask, mask->GetRect());
BitmapRef char_shadow = Bitmap::Create(mask->GetWidth(), mask->GetHeight(), true);
char_shadow->SetTransparentColor(dest.GetTransparentColor());
char_shadow->Clear();
// Blit solid color background
char_shadow->Fill(shadow_color);
// Blit mask onto background
char_shadow->MaskBlit(0, 0, *mask, mask->GetRect());
// Blit first shadow and then text
text_surface->Blit(next_glyph_rect.x + 1, next_glyph_rect.y + 1, *char_shadow, char_shadow->GetRect(), 255);
text_surface->Blit(next_glyph_rect.x, next_glyph_rect.y, *char_surface, char_surface->GetRect(), 255);
} else { // Not ExFont, draw normal text
font->Render(*text_surface, next_glyph_rect.x, next_glyph_rect.y, *system, color, *c);
}
// If it's a full size glyph, add the size of a half-size glyph twice
if (is_exfont) {
is_exfont = false;
next_glyph_pos += 12;
// Skip the next character
++c;
} else {
std::string const glyph(c.base(), next_c_it.base());
next_glyph_pos += font->GetSize(glyph).width;
}
}
BitmapRef text_bmp = Bitmap::Create(*text_surface, text_surface->GetRect());
Rect src_rect(0, 0, dst_rect.width, dst_rect.height);
int iy = dst_rect.y;
if (dst_rect.height > text_bmp->GetHeight()) {
iy += ((dst_rect.height - text_bmp->GetHeight()) / 2);
}
int ix = dst_rect.x;
dest.Blit(ix, iy, *text_bmp, src_rect, 255);
}