获得位图之点阵

#include <config.h>
#include <fonts_manager.h>

#define FONTDATAMAX 4096

static int ASCIIFontInit(char *pcFontFile, unsigned int dwFontSize);
static int ASCIIGetFontBitmap(unsigned int dwCode, PT_FontBitMap ptFontBitMap);

static T_FontOpr g_tASCIIFontOpr = {
.name          = "ascii",
.FontInit      = ASCIIFontInit,
.GetFontBitmap = ASCIIGetFontBitmap,
};
static int ASCIIFontInit(char *pcFontFile, unsigned int dwFontSize)
{
if (dwFontSize != 16)
{
//DBG_PRINTF("ASCII can't support %d font size\n", dwFontSize);
return -1;
}
return 0;
}

static int ASCIIGetFontBitmap(unsigned int dwCode, PT_FontBitMap ptFontBitMap)
{
int iPenX = ptFontBitMap->iCurOriginX;
int iPenY = ptFontBitMap->iCurOriginY;

if (dwCode > (unsigned int)0x80)
{
//DBG_PRINTF("don't support this code : 0x%x\n", dwCode);
return -1;
}
//由卡尔坐标转换为lcd坐标，笛卡尔原点在左下角，lcd原点在左上角
ptFontBitMap->iXLeft    = iPenX;
ptFontBitMap->iYTop     = iPenY - 16;
ptFontBitMap->iXMax     = iPenX + 8;
ptFontBitMap->iYMax     = iPenY;
ptFontBitMap->iBpp      = 1;
ptFontBitMap->iPitch    = 1;

//有索引找到对应的点阵
ptFontBitMap->pucBuffer = (unsigned char *)&fontdata_8x16[dwCode * 16];;
//Y不变，x增加
ptFontBitMap->iNextOriginX = iPenX + 8;
ptFontBitMap->iNextOriginY = iPenY;

return 0;
}

int ASCIIInit(void)
{
return RegisterFontOpr(&g_tASCIIFontOpr);//添加到链表
}