/*************************************************************************************************************
                                                   uC/GUI
                                               嵌入式通用圖形軟件
File        : GUICharP.C
Purpose     : Implementation of Proportional fonts
************************************************************************************************************/
#include <stddef.h>           /* needed for definition of NULL */

#include "GUI_Private.H"
 
/*************************************************************************************************************
*       Proprotional fonts                                
*************************************************************************************************************/
static const GUI_FONT_PROP* GUIPROP_FindChar(const GUI_FONT_PROP* pProp, U16P c) 
{
  for (; pProp; pProp=(GUI_FONT_PROP*) pProp->pNext) 
  {
    if ((c>=pProp->First) && (c<=pProp->Last))
      break;
  }
  return pProp;
}

void GUIPROP_DispChar(U16P c) 
{
  int BytesPerLine;
  GUI_DRAWMODE DrawMode = GUI_Context.TextMode;
  const GUI_FONT_PROP* pProp = GUIPROP_FindChar(GUI_Context.pAFont->p.pProp, c);
  if (pProp) {
    GUI_DRAWMODE OldDrawMode;
    const GUI_CHARINFO* pCharInfo = pProp->paCharInfo+(c-pProp->First);
    BytesPerLine = pCharInfo->BytesPerLine;
    OldDrawMode  = LCD_SetDrawMode(DrawMode);
    LCD_DrawBitmap( GUI_Context.DispPosX, GUI_Context.DispPosY,
                       pCharInfo->XSize,
											 GUI_Context.pAFont->YSize,
                       GUI_Context.pAFont->XMag,
											 GUI_Context.pAFont->YMag,
                       1,     /* Bits per Pixel */
                       BytesPerLine,
                       (U8 const *)pCharInfo->pData,
                       NULL  /* no palette means default palette */
                       );
    /* Fill empty pixel lines */
    if (GUI_Context.pAFont->YDist > GUI_Context.pAFont->YSize) 
    	{
      int YMag = GUI_Context.pAFont->YMag;
      int YDist = GUI_Context.pAFont->YDist * YMag;
      int YSize = GUI_Context.pAFont->YSize * YMag;
      if (DrawMode != LCD_DRAWMODE_TRANS) 
      	{
        LCD_COLOR OldColor = GUI_GetColor();
        GUI_SetColor(GUI_GetBkColor());
        LCD_FillRect(GUI_Context.DispPosX, 
                     GUI_Context.DispPosY + YSize, 
                     GUI_Context.DispPosX + pCharInfo->XSize, 
                     GUI_Context.DispPosY + YDist);
        GUI_SetColor(OldColor);
      }
    }
    LCD_SetDrawMode(OldDrawMode); /* Restore draw mode */
    GUI_Context.DispPosX += pCharInfo->XDist;
  }
}

int GUIPROP_GetCharDistX(U16P c) 
{
  const GUI_FONT_PROP* pProp = GUIPROP_FindChar(GUI_Context.pAFont->p.pProp, c);
  return (pProp) ? (pProp->paCharInfo+(c-pProp->First))->XSize : 0;
}

void GUIPROP_GetFontInfo(void*pFont, GUI_FONTINFO* pfi) 
{
  GUI_USE_PARA(pFont);
  pfi->Flags = GUI_FONTINFO_FLAG_PROP;
}

char GUIPROP_IsInFont(void*pFont, U16 c) 
{
  const GUI_FONT_PROP* pProp = GUIPROP_FindChar(((GUI_FONT*)pFont)->p.pProp, c);
  return (pProp==NULL) ? 0 : 1;
}