移植安富莱的GB2312全字库的显示方法，汉字正常，字母显示不是很完美。

mmo · 发表于 2020-5-28 15:28:05

字母相对于汉字，会稍微靠上或靠下，有没有什么办法解决下？注：由字库读取的字母是标准ASC码。

{
int BytesPerLine;
GUI_DRAWMODE DrawMode = GUI_pContext->TextMode;
const GUI_FONT_PROP GUI_UNI_PTR *pProp = GUI_pContext->pAFont->p.pProp;

/* 确定显示的字符是否在有效范围内 */
for (; pProp; pProp = pProp->pNext)
{
      if ((c >= pProp->First) && (c <= pProp->Last))break;
}

/* 字符有效，进行显示 */
if (pProp)
{
      GUI_DRAWMODE OldDrawMode;
      const GUI_CHARINFO GUI_UNI_PTR * pCharInfo = pProp->paCharInfo;
      //此处能不能判断输入字符c是汉字还是字母，汉字继续执行，字母让emwin自己显示？因为字母也继续执行的话，显示效果不是很好
      GUI_GetDataFromMemory(pProp, c);
      BytesPerLine = pCharInfo->BytesPerLine;
      OldDrawMode  = LCD_SetDrawMode(DrawMode);
      LCD_DrawBitmap(GUI_pContext->DispPosX, GUI_pContext->DispPosY,
                     pCharInfo->XSize, GUI_pContext->pAFont->YSize,
                     GUI_pContext->pAFont->XMag, GUI_pContext->pAFont->YMag,
                     1,
                     BytesPerLine,
                     &GUI_FontDataBuf[0],
                     &LCD_BKCOLORINDEX
                     );

      /* 填充背景 */
      if (GUI_pContext->pAFont->YDist > GUI_pContext->pAFont->YSize)
      {
         int YMag = GUI_pContext->pAFont->YMag;
         int YDist = GUI_pContext->pAFont->YDist * YMag;
         int YSize = GUI_pContext->pAFont->YSize * YMag;
         if (DrawMode != LCD_DRAWMODE_TRANS)
         {
            LCD_COLOR OldColor = GUI_GetColor();
            GUI_SetColor(GUI_GetBkColor());
            LCD_FillRect(GUI_pContext->DispPosX, GUI_pContext->DispPosY + YSize,
                           GUI_pContext->DispPosX + pCharInfo->XSize,
                           GUI_pContext->DispPosY + YDist);
            GUI_SetColor(OldColor);
         }
      }

      LCD_SetDrawMode(OldDrawMode);
   //if (!GUI_MoveRTL)
      GUI_pContext->DispPosX += pCharInfo->XDist * GUI_pContext->pAFont->XMag;
}
}