上一篇随笔贴出了驱动程序, 这篇文章的代码主要就是针对上层的调用了, 但是, 其实, 只要是底层的驱动程序能能够工作了, 图形设备接口应该就可以随便移植的咯~
一般彩屏的操作方式应该都是差不多的吧?
上一篇随笔:http://www.cnblogs.com/nbsofer/archive/2012/11/26/2789239.html
说明下, 本人不是很擅长图形方面的算法设计, 有些程序采用了大师们写的程序, 有些则是我自己写的(写得很差), 不过还是能够实现功能的哈~
我测试程序时是用的死太惨的51单片机测试的, ROM比较小, 只有60KB(整个字库有大约225KB), 完全没法装进去的, 所以就把要用的保存进去了, 所以会有ascii.c/.h文件的存在, 当然, 如果后来会用SD/MMC/U盘, 那就太好了, 不过, 很遗憾的是, SD卡我一直没有能够成功读取~ 慢慢来吧.
代码文件:
ascii.c/ascii.h:字库文件
common.c/common.h:一些公共的头文件/类型声明等等(和前面那篇随笔是一样的,没贴出)
gdi.c/gdi.h:图形设备接口的实现
有了这四个文件, 再加上前面的驱动程序, 把她们放到一个项目下, 就可以写程序调用了哈, 很方便的说~
该代码仅供51单片机测试使用, 需要大量的优化, 我已经把优化后的代码移植到MSP430上去了.
由于51刷屏太慢,加上没时间,所以没有更新51版本的源代码,见谅~
//ascii.h#ifndef __ASCIII_H__#define __ASCIII_H__uchar* asc_get_char(uchar uch);uchar* asc_get_word(uchar* word);uchar* asc_tpow(void);#endif// !__ASCIII_H__
//ascii.c#include "common.h"//这个是two's pow(2的次方), 其实没什么必要的, 可以忽略uchar code t_p[8] = {0x80,0x40,0x20,0x10,0x08,0x04,0x02,0x01};//这个是标准ASCII字符对应的像素值了//应该有注意到, 我这里是宽8*高12的, 而我却在上下各加//两个空行, 形成了宽8*高16的字符, 这样做的目的主要是为了方便//因为我的中文字库是用的16*16(不是很小)//是我从别人那里直接拷过来的, 看起来字体不是很好看//这个是不需要程序获取的, 程序只需做的是调用asc_get_char(your_char)//来得到一个字符数组的偏移就行了uchar code ascii[][12] = {/* */{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},/* ! */{0x00,0x00,0x20,0x20,0x20,0x20,0x20,0x20,0x00,0x20,0x00,0x00},/* " */{0x00,0x50,0x50,0x50,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},/* # */{0x00,0x00,0x28,0x28,0xFC,0x28,0x50,0xFC,0x50,0x50,0x00,0x00},/* $ */{0x00,0x20,0x78,0xA8,0xA0,0x60,0x30,0x28,0xA8,0xF0,0x20,0x00},/* % */{0x00,0x00,0x48,0xA8,0xB0,0x50,0x28,0x34,0x54,0x48,0x00,0x00},/* & */{0x00,0x00,0x20,0x50,0x50,0x78,0xA8,0xA8,0x90,0x6C,0x00,0x00},/* ' */{0x00,0x40,0x40,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},/* ( */{0x00,0x04,0x08,0x10,0x10,0x10,0x10,0x10,0x10,0x08,0x04,0x00},/* ) */{0x00,0x40,0x20,0x10,0x10,0x10,0x10,0x10,0x10,0x20,0x40,0x00},/* * */{0x00,0x00,0x00,0x20,0xA8,0x70,0x70,0xA8,0x20,0x00,0x00,0x00},/* + */{0x00,0x00,0x20,0x20,0x20,0xF8,0x20,0x20,0x20,0x00,0x00,0x00},/* , */{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x40,0x40,0x80},/* - */{0x00,0x00,0x00,0x00,0x00,0xF8,0x00,0x00,0x00,0x00,0x00,0x00},/* . */{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x40,0x00,0x00},/* / */{0x00,0x08,0x10,0x10,0x10,0x20,0x20,0x40,0x40,0x40,0x80,0x00},/* 0 */{0x00,0x00,0x70,0x88,0x88,0x88,0x88,0x88,0x88,0x70,0x00,0x00},/* 1 */{0x00,0x00,0x20,0x60,0x20,0x20,0x20,0x20,0x20,0x70,0x00,0x00},/* 2 */{0x00,0x00,0x70,0x88,0x88,0x10,0x20,0x40,0x80,0xF8,0x00,0x00},/* 3 */{0x00,0x00,0x70,0x88,0x08,0x30,0x08,0x08,0x88,0x70,0x00,0x00},/* 4 */{0x00,0x00,0x10,0x30,0x50,0x50,0x90,0x78,0x10,0x18,0x00,0x00},/* 5 */{0x00,0x00,0xF8,0x80,0x80,0xF0,0x08,0x08,0x88,0x70,0x00,0x00},/* 6 */{0x00,0x00,0x70,0x90,0x80,0xF0,0x88,0x88,0x88,0x70,0x00,0x00},/* 7 */{0x00,0x00,0xF8,0x90,0x10,0x20,0x20,0x20,0x20,0x20,0x00,0x00},/* 8 */{0x00,0x00,0x70,0x88,0x88,0x70,0x88,0x88,0x88,0x70,0x00,0x00},/* 9 */{0x00,0x00,0x70,0x88,0x88,0x88,0x78,0x08,0x48,0x70,0x00,0x00},/* : */{0x00,0x00,0x00,0x00,0x20,0x00,0x00,0x00,0x00,0x20,0x00,0x00},/* ; */{0x00,0x00,0x00,0x00,0x00,0x20,0x00,0x00,0x00,0x20,0x20,0x00},/* < */{0x00,0x04,0x08,0x10,0x20,0x40,0x20,0x10,0x08,0x04,0x00,0x00},/* = */{0x00,0x00,0x00,0x00,0xF8,0x00,0x00,0xF8,0x00,0x00,0x00,0x00},/* > */{0x00,0x40,0x20,0x10,0x08,0x04,0x08,0x10,0x20,0x40,0x00,0x00},/* ? */{0x00,0x00,0x70,0x88,0x88,0x10,0x20,0x20,0x00,0x20,0x00,0x00},/* @ */{0x00,0x00,0x70,0x88,0x98,0xA8,0xA8,0xB8,0x80,0x78,0x00,0x00},/* A */{0x00,0x00,0x20,0x20,0x30,0x50,0x50,0x78,0x48,0xCC,0x00,0x00},/* B */{0x00,0x00,0xF0,0x48,0x48,0x70,0x48,0x48,0x48,0xF0,0x00,0x00},/* C */{0x00,0x00,0x78,0x88,0x80,0x80,0x80,0x80,0x88,0x70,0x00,0x00},/* D */{0x00,0x00,0xF0,0x48,0x48,0x48,0x48,0x48,0x48,0xF0,0x00,0x00},/* E */{0x00,0x00,0xF8,0x48,0x50,0x70,0x50,0x40,0x48,0xF8,0x00,0x00},/* F */{0x00,0x00,0xF8,0x48,0x50,0x70,0x50,0x40,0x40,0xE0,0x00,0x00},/* G */{0x00,0x00,0x38,0x48,0x80,0x80,0x9C,0x88,0x48,0x30,0x00,0x00},/* H */{0x00,0x00,0xCC,0x48,0x48,0x78,0x48,0x48,0x48,0xCC,0x00,0x00},/* I */{0x00,0x00,0xF8,0x20,0x20,0x20,0x20,0x20,0x20,0xF8,0x00,0x00},/* J */{0x00,0x00,0x7C,0x10,0x10,0x10,0x10,0x10,0x10,0x90,0xE0,0x00},/* K */{0x00,0x00,0xEC,0x48,0x50,0x60,0x50,0x50,0x48,0xEC,0x00,0x00},/* L */{0x00,0x00,0xE0,0x40,0x40,0x40,0x40,0x40,0x44,0xFC,0x00,0x00},/* M */{0x00,0x00,0xD8,0xD8,0xD8,0xD8,0xA8,0xA8,0xA8,0xA8,0x00,0x00},/* N */{0x00,0x00,0xDC,0x48,0x68,0x68,0x58,0x58,0x48,0xE8,0x00,0x00},/* O */{0x00,0x00,0x70,0x88,0x88,0x88,0x88,0x88,0x88,0x70,0x00,0x00},/* P */{0x00,0x00,0xF0,0x48,0x48,0x70,0x40,0x40,0x40,0xE0,0x00,0x00},/* Q */{0x00,0x00,0x70,0x88,0x88,0x88,0x88,0xE8,0x98,0x70,0x18,0x00},/* R */{0x00,0x00,0xF0,0x48,0x48,0x70,0x50,0x48,0x48,0xEC,0x00,0x00},/* S */{0x00,0x00,0x78,0x88,0x80,0x60,0x10,0x08,0x88,0xF0,0x00,0x00},/* T */{0x00,0x00,0xF8,0xA8,0x20,0x20,0x20,0x20,0x20,0x70,0x00,0x00},/* U */{0x00,0x00,0xCC,0x48,0x48,0x48,0x48,0x48,0x48,0x30,0x00,0x00},/* V */{0x00,0x00,0xCC,0x48,0x48,0x50,0x50,0x30,0x20,0x20,0x00,0x00},/* W */{0x00,0x00,0xA8,0xA8,0xA8,0x70,0x50,0x50,0x50,0x50,0x00,0x00},/* X */{0x00,0x00,0xD8,0x50,0x50,0x20,0x20,0x50,0x50,0xD8,0x00,0x00},/* Y */{0x00,0x00,0xD8,0x50,0x50,0x20,0x20,0x20,0x20,0x70,0x00,0x00},/* Z */{0x00,0x00,0xF8,0x90,0x10,0x20,0x20,0x40,0x48,0xF8,0x00,0x00},/* [ */{0x00,0x38,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x38,0x00},/* \ */{0x00,0x40,0x40,0x40,0x20,0x20,0x10,0x10,0x10,0x08,0x00,0x00},/* ] */{0x00,0x70,0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x70,0x00},/* ^ */{0x00,0x20,0x50,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},/* _ */{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFC},/* ` */{0x00,0x20,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},/* a */{0x00,0x00,0x00,0x00,0x00,0x30,0x48,0x38,0x48,0x3C,0x00,0x00},/* b */{0x00,0x00,0xC0,0x40,0x40,0x70,0x48,0x48,0x48,0x70,0x00,0x00},/* c */{0x00,0x00,0x00,0x00,0x00,0x38,0x48,0x40,0x40,0x38,0x00,0x00},/* d */{0x00,0x00,0x18,0x08,0x08,0x38,0x48,0x48,0x48,0x3C,0x00,0x00},/* e */{0x00,0x00,0x00,0x00,0x00,0x30,0x48,0x78,0x40,0x38,0x00,0x00},/* f */{0x00,0x00,0x1C,0x20,0x20,0x78,0x20,0x20,0x20,0x78,0x00,0x00},/* g */{0x00,0x00,0x00,0x00,0x00,0x3C,0x48,0x30,0x40,0x78,0x44,0x38},/* h */{0x00,0x00,0xC0,0x40,0x40,0x70,0x48,0x48,0x48,0xEC,0x00,0x00},/* i */{0x00,0x00,0x20,0x00,0x00,0x60,0x20,0x20,0x20,0x70,0x00,0x00},/* j */{0x00,0x00,0x10,0x00,0x00,0x30,0x10,0x10,0x10,0x10,0x10,0xE0},/* k */{0x00,0x00,0xC0,0x40,0x40,0x5C,0x50,0x70,0x48,0xEC,0x00,0x00},/* l */{0x00,0x00,0xE0,0x20,0x20,0x20,0x20,0x20,0x20,0xF8,0x00,0x00},/* m */{0x00,0x00,0x00,0x00,0x00,0xF0,0xA8,0xA8,0xA8,0xA8,0x00,0x00},/* n */{0x00,0x00,0x00,0x00,0x00,0xF0,0x48,0x48,0x48,0xEC,0x00,0x00},/* o */{0x00,0x00,0x00,0x00,0x00,0x30,0x48,0x48,0x48,0x30,0x00,0x00},/* p */{0x00,0x00,0x00,0x00,0x00,0xF0,0x48,0x48,0x48,0x70,0x40,0xE0},/* q */{0x00,0x00,0x00,0x00,0x00,0x38,0x48,0x48,0x48,0x38,0x08,0x1C},/* r */{0x00,0x00,0x00,0x00,0x00,0xD8,0x60,0x40,0x40,0xE0,0x00,0x00},/* s */{0x00,0x00,0x00,0x00,0x00,0x78,0x40,0x30,0x08,0x78,0x00,0x00},/* t */{0x00,0x00,0x00,0x20,0x20,0x70,0x20,0x20,0x20,0x18,0x00,0x00},/* u */{0x00,0x00,0x00,0x00,0x00,0xD8,0x48,0x48,0x48,0x3C,0x00,0x00},/* v */{0x00,0x00,0x00,0x00,0x00,0xEC,0x48,0x50,0x30,0x20,0x00,0x00},/* w */{0x00,0x00,0x00,0x00,0x00,0xA8,0xA8,0x70,0x50,0x50,0x00,0x00},/* x */{0x00,0x00,0x00,0x00,0x00,0xD8,0x50,0x20,0x50,0xD8,0x00,0x00},/* y */{0x00,0x00,0x00,0x00,0x00,0xEC,0x48,0x50,0x30,0x20,0x20,0xC0},/* z */{0x00,0x00,0x00,0x00,0x00,0x78,0x10,0x20,0x20,0x78,0x00,0x00},/* { */{0x00,0x18,0x10,0x10,0x10,0x20,0x10,0x10,0x10,0x10,0x18,0x00},/* | */{0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x10},/* } */{0x00,0x60,0x20,0x20,0x20,0x10,0x20,0x20,0x20,0x20,0x60,0x00},/* ~ */{0x40,0xA4,0x18,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}};//用了一个结构体来索引//因为没有足够的空间来保存字库//所以就不能按照平常的区位码来索引汉字的代码了//which[3]:保存一个中文汉字,what[32]:保存的代码//生成方式:http://www.cnblogs.com/nbsofer/archive/2012/11/01/2749026.html//同样是内部使用, 外部程序只需要调用 asc_get_word(相对于*_char而言)(见下)struct wmap_s{ uchar which[3]; uchar what[32];} code wmap[] = { {"我",{0x04,0x80,0x0E,0xA0,0x78,0x90,0x08,0x90,0x08,0x84,0xFF,0xFE,0x08,0x80,0x08,0x90,0x0A,0x90,0x0C,0x60,0x18,0x40,0x68,0xA0,0x09,0x20,0x0A,0x14,0x28,0x14,0x10,0x0C}}, {"的",{0x10,0x40,0x10,0x40,0x22,0x44,0x7F,0x7E,0x42,0x84,0x43,0x04,0x42,0x04,0x42,0x84,0x7E,0x64,0x42,0x24,0x42,0x04,0x42,0x04,0x42,0x04,0x7E,0x04,0x42,0x28,0x00,0x10}}, {"是",{0x0F,0xE0,0x08,0x20,0x08,0x20,0x0F,0xE0,0x08,0x20,0x08,0x20,0x0F,0xE0,0x00,0x04,0xFF,0xFE,0x01,0x00,0x09,0x20,0x09,0xF0,0x09,0x00,0x15,0x00,0x23,0x06,0x40,0xFC}}, {"现",{0x00,0x08,0x09,0xFC,0xFD,0x08,0x11,0x28,0x11,0x28,0x11,0x28,0x11,0x28,0x7D,0x48,0x11,0x48,0x11,0x48,0x10,0x40,0x1C,0xA0,0xF0,0xA0,0x41,0x22,0x02,0x22,0x0C,0x1E}}, {"在",{0x02,0x00,0x02,0x00,0x02,0x04,0xFF,0xFE,0x04,0x00,0x04,0x40,0x08,0x40,0x08,0x50,0x13,0xF8,0x30,0x40,0x50,0x40,0x90,0x40,0x10,0x40,0x10,0x44,0x17,0xFE,0x10,0x00}}, {"时",{0x00,0x08,0x04,0x08,0x7E,0x08,0x44,0x08,0x47,0xFE,0x44,0x08,0x44,0x08,0x7C,0x88,0x44,0x48,0x44,0x48,0x44,0x08,0x44,0x08,0x7C,0x08,0x44,0x48,0x00,0x28,0x00,0x10}}, {"间",{0x20,0x04,0x1B,0xFE,0x08,0x04,0x40,0x24,0x4F,0xF4,0x48,0x24,0x48,0x24,0x48,0x24,0x4F,0xE4,0x48,0x24,0x48,0x24,0x48,0x24,0x4F,0xE4,0x48,0x24,0x40,0x14,0x40,0x08}}, {"温",{0x00,0x08,0x43,0xFC,0x32,0x08,0x12,0x08,0x83,0xF8,0x62,0x08,0x22,0x08,0x0B,0xF8,0x10,0x00,0x27,0xFC,0xE4,0xA4,0x24,0xA4,0x24,0xA4,0x24,0xA4,0x2F,0xFE,0x20,0x00}}, {"度",{0x01,0x00,0x00,0x84,0x3F,0xFE,0x22,0x20,0x22,0x28,0x3F,0xFC,0x22,0x20,0x23,0xE0,0x20,0x00,0x2F,0xF0,0x22,0x20,0x21,0x40,0x20,0x80,0x43,0x60,0x8C,0x1E,0x30,0x04}}, {"初",{0x20,0x00,0x10,0x00,0x10,0x04,0x05,0xFE,0xFC,0x44,0x08,0x44,0x10,0x44,0x34,0x44,0x58,0x44,0x94,0x44,0x10,0x44,0x10,0x84,0x10,0x84,0x11,0x04,0x12,0x28,0x14,0x10}}, {"始",{0x10,0x40,0x10,0x40,0x10,0x40,0x10,0x80,0xFC,0x88,0x25,0x04,0x27,0xFE,0x24,0x02,0x24,0x04,0x49,0xFE,0x29,0x04,0x11,0x04,0x29,0x04,0x45,0x04,0x85,0xFC,0x01,0x04}}, {"化",{0x08,0x80,0x08,0x80,0x08,0x80,0x10,0x88,0x10,0x98,0x30,0xA0,0x50,0xC0,0x90,0x80,0x11,0x80,0x12,0x80,0x14,0x80,0x10,0x80,0x10,0x82,0x10,0x82,0x10,0x7E,0x10,0x00}},};//函数:asc_get_word(uchar* pword)//用来获取一个中文汉字的代码保存位置偏移//如果不存在, 返回NULL了(这里直接用0代替了)uchar* asc_get_word(uchar* pword){ uint k; uint len = sizeof(wmap)/sizeof(wmap[0]); for(k=0; k<len; k++){ if(wmap[k].which[0] == pword[0] && wmap[k].which[1] == pword[1]) { return &wmap[k].what[0]; } } return 0;}//同上, 不过这个是用来获取ASCII字符的//应该注意到的是:我是根据标准ASCII的顺序来索引ASCII字符的//所以,上面的ASCII字符代码表不能再添加/删除//当然, 中文字库不存在这个限制//使用:传入一个ASCII字符,返回编码的偏移(没有的话返回0)uchar* asc_get_char(char uch){ char idx; idx = (uch-32);//从空格算起, 控制字符就没用了,回车在其它程序中已经单独处理 if(idx<0 || idx>sizeof(ascii)/sizeof(ascii[0])) return 0; return &ascii[idx][0];}//返回2的次方, 用得着的时候就用吧//比如: uchar* tp = asc_tpow();//tp[0]=2^7,tp[1]=2^6, ...uchar* asc_tpow(void){ return &t_p[0];}
//gdi.h#ifndef __GDI_H__#define __GDI_H__#include "common.h"#include "s6d1121.h"//颜色描述表(前景色, 背景色)typedef struct color_table_s{ uint fgc; uint bgc;}color_table;//很有用的rgb(r,g,b) 宏 rgb(红,绿,蓝)#define rgb(r,g,b) ((uint)( ((uint)(uchar)(r)<<8 & 0xf800|(uchar)(r)>>7)| ((uint)(uchar)(g)<<3 & 0x7e00)| ((uint)(uchar)(b)>>2 | (uchar)(b)>>7)))//function prototype//函数的说明直接见各函数void rectangle(int left, int top, int width, int height, uint color);void line(int x1, int y1, int x2, int y2, uint color);void triangle(int x1, int y1, int x2, int y2, int x3, int y3, uint color);void set_pixel(uint x, uint y, uint color);void fill_rect(uint left, uint top, uint width, uint height, uint color);void clear_screen(uint color);void char_out(int x, int y, char ch, uint fgc, uint bgc);void word_out(int x, int y, uchar* pword, uint fgc, uint bgc);void text_out(int x, int y, uchar* str, uint fgc, uint bgc, color_table* pct);int cirpot(int x0,int y0,int x,int y,uint color);void circle(int x0,int y0,int r,uint color);float sin(float rad);uchar* itoa(int x);//some useful function macros//一些有用的宏,主要是用于把应用层的程序和驱动层的程序隔离//其实还是是调用的该驱动层的函数/* 设定待写入/读取数据的缓冲区:X坐标,Y坐标,宽,高 */#define set_area(x,y,width,height) LCD_SetAddress((x),(y),(width),(height))/* 在 set_area 调用后, 写入数据的操作 */#define set_data(dat) LCD_WriteData((dat))//初始化彩屏#define init_lcd LCD_Init//清屏#define clr_scr clear_screen//设定彩屏主控内部寄存器的值(不应该暴露给应用层的,以后再更新,必然的)#define set_reg(reg,value) LCD_WriteCmdWithData((reg),(value))#endif// !__GDI_H__
//gdi.c#include "common.h"#include "gdi.h"#include "s6d1121.h"#include "ascii.h"//用来把指定的整数转换为字符串//保存在静态变量buf中并返回给调用者//显示0还是显示空格在于自己了uchar* itoa(int x){ static uchar buf[6]; buf[0] = x/10000+'0'; x %= 10000; buf[1] = x/1000+'0'; x %= 1000; buf[2] = x/100+'0'; x %= 100; buf[3] = x/10+'0'; x %= 10; buf[4] = x+'0'; buf[5] = 0; return &buf[0];}//画矩形的函数//参数:左上角的X坐标,左上角的Y坐标, 宽, 高, 颜色(有一些常用的颜色应该被定义,//下次再修改, 51的刷屏速度忍无可忍)void rectangle(int left, int top, int width, int height, uint color){ int x2,y2; x2 = left+width-1; y2 = top+height-1; //必须保存在有效范围内 if(left<0 || top<0 || x2>239 || y2>319) return; //看到了吧, 实现就是转换成画直线 //所以:最关键的怎样画点,直线 line(left, top, x2, top, color); line(x2, top, x2, y2, color); line(x2, y2, left, y2, color); line(left, y2, left, top, color);}//画三角形, 参数为三个坐标点+颜色//其实还是是转换成画三条直线void triangle(int x1, int y1, int x2, int y2, int x3, int y3,uint color){ line(x1,y1,x2,y2, color); line(x2,y2,x3,y3, color); line(x1,y1,x3,y3, color);}//画直线, 可怜这是我自己写的算法, 效率太低了//而且,如果不仔细读读代码, 很难明白的//以后还是换成大师们已经写好了的吧//参数:两点成线, 不用多说, 当然, 颜色有要有的//画线就是转换成画点,所以关键是怎么画点,set_pixel再介绍void line(int x1, int y1, int x2, int y2, uint color){ int w,h;//记录长宽 float rate1,rate2;//高与宽的比率 int xaxis, yaxis, k; int ffalling = 0;//直线是否为下降沿 if(x1>x2){ k = x1; x1 = x2; x2 = k; k = y1; y1 = y2; y2 = k; } w = x2-x1+1;//get horizontal distance h = y2-y1;//get vertical distance if(h<0) h = -h; h = h+1; rate1 = (float)h/w;//根据相似三角形计算坐标 rate2 = (float)w/h; if(w>h){//宽大于高 ffalling = y1-y2; if(y1 == y2) ffalling = 0; for(k=0; k<w; k++){ if(ffalling<0){ //+0.5是作四四舍五入 yaxis = y2-(uint)((w-k)*rate1+0.5)+1; }else if(ffalling>0){ yaxis = y1-(uint)(k*rate1+0.5)+1; }else{ yaxis = y1; } set_pixel(k+x1,yaxis, color); } }else{ //h>w ffalling = y1-y2; if(x1==x2) ffalling = 0; for(k=0; k<h; k++){ if(ffalling<0){ xaxis = x1+(uint)(k*rate2+0.5)+1; }else if(ffalling>0){ xaxis = x1+((h-k)*rate2+0.5)+1; }else{ xaxis = x1; } set_pixel(xaxis, (y1<y2?y1:y2)+k, color); } }}//这个就是画点函数了//set_area,set_data 完工void set_pixel(uint x, uint y, uint color){ if(x>239 || y>319) return; set_area(x, y, 1, 1); set_data(color);}//填充一块矩形为指定颜色void fill_rect(uint left, uint top, uint width, uint height, uint color){ uint a,b; if(left>239 || top>319) return; if(left+width-1>239) width = 239-left+1;//clip x border if(top+height-1>319) height = 319-top+1;//clip y border set_area(left, top, width, height); for(a=0; a<height; a++){ for(b=0; b<width; b++){ set_data(color); } }}//用 颜色 color 清屏void clear_screen(uint color){ uint i,j; set_area(0,0,240,320); for(i=0;i<320;i++){ for (j=0;j<240;j++){ set_data(color); } }}//在指定位置输出一个ASCII字符//属于内部调用函数//参数:X坐标,Y坐标,字符,前景色,背景色//如果不知道是怎样写字的, 看去看看我那篇//介绍字库的使用的文章吧(在前面)void char_out(int x, int y, char ch, uint fgc, uint bgc){ char k,i; uchar* pch = 0; uchar* t_p = asc_tpow(); pch = asc_get_char(ch); if(!pch) return; //我的字库是8*12的 //但是我把它转换成了8*16 set_area(x, y, 8, 16); //所以我先写三行空白行 for(k=0; k<24; k++){ set_data(bgc); } for(k=0; k<12; k++){ for(i=0; i<8; i++){ set_data(*pch&t_p[i]?fgc:bgc); } pch++; } //再写一行空白行,用背景色填充 for(k=0; k<8; k++){ set_data(bgc); }}//前面是输出ASCII字符//这个是在指定位置输出指定的汉字//属于内部调用函数//参数:X坐标,Y坐标,一个汉字的数组(uchar数组,3个字符,2个最好,节约嘛),前景色,背景色void word_out(int x, int y, uchar* pword, uint fgc, uint bgc){ uchar xx,k,yy; uchar* pch = 0; uchar* t_p = asc_tpow(); //"汉字两个都>=0xa0, 不然就是错的" if(pword[0]<0xa0 || pword[1]<0xa0) return; pch = asc_get_word(pword); if(!pch) return; //"需要检测x+15,y+15是否出界,则k应为实际打印的行/列数" //"并设定一个参数为是否依然打印不能完整打印的char/word" set_area(x,y,16,16); //16*2*8:32个字节就这样写进去咯 for(k=0; k<16; k++){//16行 for(yy=0; yy<2; yy++){//一行2个字节(16位) for(xx=0; xx<8; xx++){//一个字节8个位 set_data(*pch&t_p[xx]?fgc:bgc); } pch++; } }}//这个都是真正的输出文本的函数的//参数:X坐标,Y坐标,字符串指针,前景色,背景色,颜色索引表(可选)//说明:如果x,y均等于-1,则程序在上一次的结尾接着输出//仅可用的控制字符:'\n',换行void text_out(int x, int y, uchar* str, uint fgc, uint bgc, color_table* pct){ uchar* pch = str; uint k; uint fgcolor, bgcolor; //保存最近一次调用时的坐标 static uchar lastx=0; static uint lasty=0; //判断是否为接着输出 if(x==-1 && y==-1){ x = lastx; y = lasty; } if(!pch) return; //遍历每个字符调用 // char_out 进行字符输出 // word_out 进行中文输出 for(;*pch;){ if(pct){ fgcolor = pct->fgc; bgcolor = pct->bgc; }else{ fgcolor = fgc; bgcolor = bgc; } if(*pch >= 0xa0){//word word_out(x, y, pch, fgcolor, bgcolor); x += 16;//more 8 pixels than chars pch++; }else if(*pch == '\n'){//换行处理 x = 0; y += 16; }else{//char char_out(x, y, *pch, fgcolor, bgcolor); x += 8; } pch++; //check if return //word to next line //这里是当输出的汉字/字符不能完全显示是的处理(换行) if(/*x==240*/(*pch>=0xa0&&x>224) || x>232){//to next line if(*pch){ set_area(x,y,240,320); for(k=0; k<16*(239-x+1); k++){ set_data(bgcolor); } } x = 0; y += 16; } if(/*y==320*/y>304){//is bottom if(*pch){ set_area(x,y,240,320); for(k=0; k<240*(319-y+1); k++){ set_data(bgcolor); } } y = 0; } if(pct) pct++; } lastx = x; lasty = y;}/*float sin(float rad){ float x1 = rad; float x3 = x1*rad*rad; float x5 = x3*rad*rad; float x7 = x5*rad*rad; return x1/1-x3/6+x5/120-x7/5040;}*//*float cos(float rad){ }*///画圆函数//大师写的哦~ 膜拜//基本没看懂//不记得名字了, 好像是叫Bruce...画圆算法void circle(int x0,int y0, int r,uint color) { int x,y,d; x=0; y=(int)r; d=(int)(3-2*r); while(x<y){ cirpot(x0,y0,x,y,color); if(d<0){ d+=4*x+6; }else{ d+=4*(x-y)+10; y--; } x++; } if(x==y) cirpot(x0,y0,x,y,color); }int cirpot(int x0,int y0,int x,int y,uint color) { set_pixel((x0+x),(y0+y), color); set_pixel((x0+y),(y0+x), color); set_pixel((x0+y),(y0-x), color); set_pixel((x0+x),(y0-y), color); set_pixel((x0-x),(y0-y), color); set_pixel((x0-y),(y0-x), color); set_pixel((x0-y),(y0+x), color); set_pixel((x0-x),(y0+y), color); return 0; } /*int abs(int a, int b){ if(a>b) return a-b; else return b-a;}*/
2013-04-20:
更新一个小错误,上面的rgb貌似有点问题, 看起来也很复杂,换用下面这个代替之~
//"rgb(r,g,b) 宏 rgb(红,绿,蓝)"#define rgb(r,g,b) ((uint)( ((((uint)(r)&0xff)>>3)<<11)| ((((uint)(g)&0xff)>>2)<<5)| (((uint)(b)&0xff)>>3)))
女孩不哭(QQ:191035066)@2012-12-09 00:12:55 http://www.cnblogs.com/nbsofer
这篇随笔就至此结束吧, 还有一篇随笔, 有空再弄出来, 当然, 驱动层和中间层都写好了, 那就该写示例调用程序来应用下了.
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