bsnes-plus/supergameboy/libgambatte/src/bitmap_font.h
2020-01-03 00:16:39 -05:00

87 lines
2.2 KiB
C++

//
// Copyright (C) 2008 by sinamas <sinamas at users.sourceforge.net>
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License version 2 as
// published by the Free Software Foundation.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License version 2 for more details.
//
// You should have received a copy of the GNU General Public License
// version 2 along with this program; if not, write to the
// Free Software Foundation, Inc.,
// 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
//
#ifndef BITMAP_FONT_H
#define BITMAP_FONT_H
#include "gbint.h"
#include <cstddef>
namespace bitmapfont {
enum Char {
NUL,
N0, N1, N2, N3, N4, N5, N6, N7, N8, N9,
A, B, C, D, E, F, G, H, I, J, K, L, M,
N, O, P, Q, R, S, T, U, V, W, X, Y, Z,
a, b, c, d, e, f, g, h, i, j, k, l, m,
n, o, p, q, r, s, t, u, v, w, x, y, z,
SPC
};
enum { HEIGHT = 10 };
enum { MAX_WIDTH = 9 };
enum { NUMBER_WIDTH = 6 };
std::size_t getWidth(char const *chars);
// struct Fill { void operator()(RandomAccessIterator dest, std::ptrdiff_t pitch) { fill pixels at dest } }
template<class RandomAccessIterator, class Fill>
void print(RandomAccessIterator dest, std::ptrdiff_t pitch, Fill fill, char const *chars);
void print(gambatte::uint_least32_t *dest, std::ptrdiff_t pitch, unsigned long color, char const *chars);
void utoa(unsigned u, char *a);
// --- INTERFACE END ---
extern unsigned char const *const font[];
template<class RandomAccessIterator, class Fill>
void print(RandomAccessIterator dest, std::ptrdiff_t const pitch, Fill fill, char const *chars) {
while (int const character = *chars++) {
RandomAccessIterator dst = dest;
unsigned char const *s = font[character];
unsigned const width = *s >> 4;
unsigned h = *s++ & 0xF;
while (h--) {
RandomAccessIterator d = dst;
unsigned line = *s++;
if (width > 8)
line |= *s++ << 8;
while (line) {
if (line & 1)
fill(d, pitch);
line >>= 1;
++d;
}
dst += pitch;
}
dest += width;
}
}
}
#endif