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5821e9ceba
- add support for Chinese (two-byte) Character text writing and fonts (vanilla); - move rather long manpages listing from Makefile into separate files (sobomax); - bump PORTREVISION as a result. Submitted by: vanilla, sobomax
326 lines
8.2 KiB
Plaintext
326 lines
8.2 KiB
Plaintext
--- gl/cctext.c.orig Sat Sep 30 20:48:05 2000
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+++ gl/cctext.c Mon Sep 20 23:00:19 1999
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@@ -0,0 +1,322 @@
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+/* Framebuffer Graphics Libary for Linux,
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+ * Copyright 1998 Wei Yongming
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+ * This code is based on partially Harm Hanemaayer's work.
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+ */
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+/* cctext.c Chinese (two-byte) Character text writing and fonts */
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+
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+
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+#include <stdlib.h>
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+#include <stdio.h>
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+#include <stdarg.h>
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+#include <vga.h>
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+#include "inlstring.h" /* include inline string operations */
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+
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+#include "vgagl.h"
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+#include "def.h"
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+
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+
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+/* CCText/font functions */
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+// The default font matrics values.
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+static int afont_width = 8;
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+static int cfont_width = 16;
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+static int font_height = 16;
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+static char *afont_address;
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+static char *cfont_address;
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+static int afont_charsize = 128;
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+static int cfont_charsize = 256;
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+// The writemode of cc font is always COMPRESSED.
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+static int font_writemode = WRITEMODE_OVERWRITE;
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+static int compressed_font_bg = 0;
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+static int compressed_font_fg = 15;
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+
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+void gl_setccfont(int afw, int cfw, int fh, void *afont, void* cfont)
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+{
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+ afont_width = afw;
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+ cfont_width = cfw;
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+ font_height = fh;
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+ afont_charsize = afont_width * font_height * BYTESPERPIXEL;
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+ cfont_charsize = cfont_width * font_height * BYTESPERPIXEL;
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+ afont_address = afont;
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+ cfont_address = cfont;
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+}
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+
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+void gl_setccwritemode(int m)
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+{
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+ font_writemode = m;
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+}
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+
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+void gl_setccfontcolors(int bg, int fg)
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+{
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+ compressed_font_bg = bg;
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+ compressed_font_fg = fg;
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+}
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+
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+void gl_ccwriten(int x, int y, int n, char *s)
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+{
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+ char *str = alloca(n + 1);
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+ memcpy(str, s, n);
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+ str[n] = 0;
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+ gl_ccwrite(x, y, str);
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+}
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+
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+#ifndef SVGA_AOUT
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+
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+static int ccnprintf(int sx, int sy,
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+ size_t bufs, const char *fmt, va_list args)
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+{
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+ char *buf;
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+ static int x = 0, y = 0, x_start = 0;
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+ int n;
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+
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+ buf = alloca(bufs);
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+ n = vsnprintf(buf, bufs, fmt, args);
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+ if (n < 0)
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+ return n; /* buffer did not suffice, return and retry */
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+
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+ if ((sx >= 0) && (sy >= 0)) {
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+ x = x_start = sx;
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+ y = sy;
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+ }
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+
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+ for (; *buf; buf++)
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+ switch (*buf) {
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+ case '\a': /* badly implemented */
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+ fputc('\a', stdout);
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+ fflush(stdout);
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+ break;
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+ case '\b':
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+ x -= afont_width;
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+ if (x < x_start) {
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+ x = WIDTH + (x_start % afont_width);
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+ while(x + afont_width > WIDTH)
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+ x -= afont_width;
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+ if (y >= font_height)
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+ y -= font_height;
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+ }
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+ break;
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+ case '\n':
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+ newline:
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+ y += font_height;
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+ if (y + font_height > HEIGHT)
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+ y %= font_height;
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+ case '\r':
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+ x = x_start;
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+ break;
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+ case '\t':
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+ x += ((TEXT_TABSIZE -
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+ ((x - x_start) / afont_width) % TEXT_TABSIZE) * afont_width);
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+ goto chk_wrap;
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+ break;
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+ case '\v':
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+ y += font_height;
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+ if (y + font_height > HEIGHT)
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+ y %= font_height;
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+ break;
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+ default:
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+ if( ((unsigned char)(*buf) > 0xa0)
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+ && ((unsigned char)(*(buf + 1)) > 0xa0)) {
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+ gl_ccwriten(x, y, 2, buf);
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+ buf += 1;
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+ x += cfont_width;
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+ }
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+ else {
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+ gl_ccwriten(x, y, 1, buf);
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+ x += afont_width;
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+ }
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+ chk_wrap:
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+ if (x + afont_width > WIDTH)
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+ goto newline;
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+ }
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+ return n;
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+}
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+
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+int gl_ccprintf(int x, int y, const char *fmt, ...)
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+{
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+ size_t bufs = BUFSIZ;
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+ int result;
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+ va_list args;
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+
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+ va_start(args, fmt);
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+
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+ /* Loop until buffer size suffices */
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+ do {
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+ result = ccnprintf(x, y, bufs, fmt, args);
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+ bufs <<= 1;
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+ } while(result < 0);
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+
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+ va_end(args);
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+ return result;
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+}
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+
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+#endif
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+
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+static int getnextchar(char* s, uchar* cc)
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+{
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+ if( s[0] == '\0') return 0;
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+
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+ cc[0] = (unsigned char)(*s);
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+ cc[1] = (unsigned char)(*(s + 1));
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+
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+ if( ((unsigned char)cc[0] > 0xa0) && ((unsigned char)cc[1] > 0xa0) )
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+ return 1;
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+
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+ cc[1] = '\0';
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+
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+ return 1;
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+}
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+
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+static void expandcchar(int bg, int fg, uchar* c, unsigned char *bitmap)
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+{
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+ int x, y;
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+ int c1, c2;
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+ unsigned char *font;
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+ int b = 0; /* keep gcc happy with b = 0 - MW */
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+
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+ c1 = c[0];
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+ c2 = c[1];
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+
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+ font = cfont_address + ((c1 - 161)*94 + c2 - 161) *
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+ (font_height * ((cfont_width + 7) / 8));
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+
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+ for (y = 0; y < font_height; y++)
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+ for (x = 0; x < cfont_width; x++) {
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+ if (x % 8 == 0)
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+ b = *font++;
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+ if (b & (128 >> (x % 8))) /* pixel */
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+ switch (BYTESPERPIXEL) {
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+ case 1:
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+ *bitmap = fg;
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+ bitmap++;
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+ break;
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+ case 2:
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+ *(ushort *) bitmap = fg;
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+ bitmap += 2;
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+ break;
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+ case 3:
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+ *(ushort *) bitmap = fg;
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+ *(bitmap + 2) = fg >> 16;
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+ bitmap += 3;
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+ break;
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+ case 4:
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+ *(uint *) bitmap = fg;
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+ bitmap += 4;
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+ } else /* background pixel */
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+ switch (BYTESPERPIXEL) {
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+ case 1:
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+ *bitmap = bg;
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+ bitmap++;
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+ break;
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+ case 2:
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+ *(ushort *) bitmap = bg;
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+ bitmap += 2;
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+ break;
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+ case 3:
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+ *(ushort *) bitmap = bg;
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+ *(bitmap + 2) = bg;
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+ bitmap += 3;
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+ break;
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+ case 4:
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+ *(uint *) bitmap = bg;
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+ bitmap += 4;
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+ }
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+ }
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+}
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+
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+static void expandchar(int bg, int fg, int c, unsigned char *bitmap)
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+{
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+ int x, y;
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+ unsigned char *font;
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+ int b = 0; /* keep gcc happy with b = 0 - MW */
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+
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+ font = afont_address + c * (font_height * ((afont_width + 7) / 8));
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+
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+ for (y = 0; y < font_height; y++)
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+ for (x = 0; x < afont_width; x++) {
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+ if (x % 8 == 0)
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+ b = *font++;
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+ if (b & (128 >> (x % 8))) /* pixel */
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+ switch (BYTESPERPIXEL) {
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+ case 1:
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+ *bitmap = fg;
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+ bitmap++;
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+ break;
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+ case 2:
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+ *(ushort *) bitmap = fg;
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+ bitmap += 2;
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+ break;
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+ case 3:
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+ *(ushort *) bitmap = fg;
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+ *(bitmap + 2) = fg >> 16;
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+ bitmap += 3;
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+ break;
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+ case 4:
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+ *(uint *) bitmap = fg;
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+ bitmap += 4;
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+ } else /* background pixel */
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+ switch (BYTESPERPIXEL) {
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+ case 1:
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+ *bitmap = bg;
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+ bitmap++;
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+ break;
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+ case 2:
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+ *(ushort *) bitmap = bg;
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+ bitmap += 2;
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+ break;
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+ case 3:
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+ *(ushort *) bitmap = bg;
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+ *(bitmap + 2) = bg;
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+ bitmap += 3;
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+ break;
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+ case 4:
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+ *(uint *) bitmap = bg;
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+ bitmap += 4;
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+ }
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+ }
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+}
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+
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+/* Write using compressed font. */
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+
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+void gl_ccwrite(int x, int y, char* s)
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+{
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+ unsigned char *bitmap;
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+ uchar cc[2];
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+
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+ bitmap = (unsigned char *)alloca(cfont_width * font_height * BYTESPERPIXEL);
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+ if( !(font_writemode & WRITEMODE_MASKED) ) {
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+ while( getnextchar(s, cc) ) {
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+ if( cc[1] != '\0') {
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+ expandcchar(compressed_font_bg, compressed_font_fg,
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+ cc, bitmap);
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+ gl_putbox(x, y, cfont_width, font_height, bitmap);
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+ s += 2;
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+ x += cfont_width;
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+ }
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+ else {
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+ expandchar(compressed_font_bg, compressed_font_fg,
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+ cc[0], bitmap);
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+ gl_putbox(x, y, afont_width, font_height, bitmap);
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+ s += 1;
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+ x += afont_width;
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+ }
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+ }
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+ }
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+ else { // masked write.
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+ while( getnextchar(s, cc) ) {
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+ if( cc[1] != '\0') {
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+ expandcchar(0, compressed_font_fg,
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+ cc, bitmap);
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+ gl_putboxmask(x, y, cfont_width, font_height, bitmap);
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+ s += 2;
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+ x += cfont_width;
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+ }
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+ else {
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+ expandchar(0, compressed_font_fg,
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+ cc[0], bitmap);
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+ gl_putboxmask(x, y, afont_width, font_height, bitmap);
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+ s += 1;
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+ x += afont_width;
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+ }
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+ }
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+ }
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+}
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+
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