graphic.c

#include "hankaku.h"
#include "bootpack.h"
#include "color.h"

void set_palette(int start, int end, unsigned char *rgb)
{
	int i, eflags;
	eflags = io_load_eflags();
	io_cli(); /*禁止中断*/
	io_out8(0x03c8, start);
	for (i = start; i <= end; i++)
	{
		io_out8(0x03c9, rgb[0] / 4);
		io_out8(0x03c9, rgb[1] / 4);
		io_out8(0x03c9, rgb[2] / 4);
		rgb += 3;
	}
	io_store_eflags(eflags);
	return;
}

void init_palette(void)
{
	static unsigned char table_rgb[16 * 3] = 
	{
		0x00, 0x00, 0x00, /* 0 黑*/
		0xff, 0x00, 0x00, /* 1 亮红*/
		0x00, 0xff, 0x00, /* 2 亮绿*/
		0xff, 0xff, 0x00, /* 3 亮黄*/
		0x00, 0x00, 0xff, /* 4 亮蓝*/
		0xff, 0x00, 0xff, /* 5 亮紫*/
		0x00, 0xff, 0xff, /* 6 浅亮蓝*/
		0xff, 0xff, 0xff, /* 7 白*/
		0xc6, 0xc6, 0xc6, /* 8 亮灰*/
		0x84, 0x00, 0x00, /* 9 暗红*/
		0x00, 0x84, 0x00, /*10 暗绿*/
		0x84, 0x84, 0x00, /*11 暗黄*/
		0x00, 0x00, 0x84, /*12 暗青*/
		0x84, 0x00, 0x84, /*13 暗紫*/
		0x00, 0x84, 0x84, /*14 浅暗蓝*/
		0x84, 0x84, 0x84  /*15 暗灰*/
	};
	set_palette(0, 15, table_rgb);
	return;
}


void boxfill8(unsigned char *vram, int xsize, unsigned char c, int x0, int y0, int x1, int y1)
{
	int x, y;
	for (y = y0; y <= y1; y++)
	{
		for (x = x0; x <= x1; x++)
		{
			vram[y * xsize + x] = c;
		}
	}
	return;
}

void init_screen8(char* vram, int xsize, int ysize)
{
	boxfill8(vram, xsize, COL8_008484, 0, 0, xsize-1, ysize-29);
	boxfill8(vram, xsize, COL8_C6C6C6, 0, ysize-28, xsize-1, ysize-28);
	boxfill8(vram, xsize, COL8_FFFFFF, 0, ysize-27, xsize-1, ysize-27);
	boxfill8(vram, xsize, COL8_C6C6C6, 0, ysize-26, xsize-1, ysize-1);

	boxfill8(vram, xsize, COL8_FFFFFF, 3, ysize-24, 59, ysize-24);
	boxfill8(vram, xsize, COL8_FFFFFF, 2, ysize-24, 2, ysize-4);
	boxfill8(vram, xsize, COL8_848484, 3, ysize-4, 59, ysize-4);
	boxfill8(vram, xsize, COL8_848484, 59, ysize-23, 59, ysize-5);
	boxfill8(vram, xsize, COL8_000000, 2, ysize-3, 59, ysize-3);
	boxfill8(vram, xsize, COL8_000000, 60, ysize-24, 60, ysize-3);

	boxfill8(vram, xsize, COL8_848484, xsize-47, ysize-24, xsize-4, ysize-24);
	boxfill8(vram, xsize, COL8_848484, xsize-47, ysize-23, xsize-47, ysize-4);
	boxfill8(vram, xsize, COL8_FFFFFF, xsize-47, ysize-3, xsize-4, ysize-3);
	boxfill8(vram, xsize, COL8_FFFFFF, xsize-3, ysize-24, xsize-3, ysize-3);
}

void putfont8(char *vram, int xsize, int x, int y, char c, char *font)
{
	int i;
	char *p, d;
	for (i=0; i<16 ; ++i)
	{
		p = vram + (y+i)*xsize + x;
		d = font[i];
		if ((d & 0x80) != 0) { p[0] = c; }
		if ((d & 0x40) != 0) { p[1] = c; }
		if ((d & 0x20) != 0) { p[2] = c; }
		if ((d & 0x10) != 0) { p[3] = c; }
		if ((d & 0x08) != 0) { p[4] = c; }
		if ((d & 0x04) != 0) { p[5] = c; }
		if ((d & 0x02) != 0) { p[6] = c; }
		if ((d & 0x01) != 0) { p[7] = c; }
	}
	return;
}

void putfont8_asc(char *vram, int xsize, int x, int y, char c, unsigned char *s)
{
	extern char hankaku[4096];
	for(; *s != '\0'; ++s)
	{
		putfont8(vram, xsize,  x, y, c, hankaku + (*s) * 16);
		x+=8;
	}
	return;
}

void init_mouse_cursor8(char *mouse, char bc)
{
	static char cursor[16][16] = {
		"**************..",
		"*OOOOOOOOOOO*...",
		"*OOOOOOOOOO*....",
		"*OOOOOOOOO*.....",
		"*OOOOOOOO*......",
		"*OOOOOOO*.......",
		"*OOOOOOO*.......",
		"*OOOOOOOO*......",
		"*OOOO**OOO*.....",
		"*OOO*..*OOO*....",
		"*OO*....*OOO*...",
		"*O*......*OOO*..",
		"**........*OOO*.",
		"*..........*OOO*",
		"............*OO*",
		".............***"
	};
	int x, y;
	for (y=0; y<16; ++y)
	{
		for (x=0; x<16; ++x)
		{
			switch (cursor[y][x]) {
				case '*':
					mouse[y*16+x] = COL8_848484;
					break;
				case 'O':
					mouse[y*16+x] = COL8_FFFFFF;
					break;
				case '.':
					mouse[y*16+x] = bc;
					break;
			}
		}
	}
	return;
}

void putblock8_8(char *vram, int vxsize, int pxsize, int pysize, int px0, int py0, char *buf, int bxsize)
{
	int x, y;
	for (y=0; y<pysize; ++y)
	{
		for (x=0; x<pxsize; ++x)
		{
			vram[ (py0+y)*vxsize + px0 + x] = buf[y*bxsize + x];
		}
	}
	return;
}