lcdmem.c

ucgui的3.98版本的源代码

  U8 Shift = (8 + (x0 & 7) - (Diff0 & 7));
  U8 Mode = GUI_Context.DrawMode & (LCD_DRAWMODE_TRANS | LCD_DRAWMODE_XOR);
  do {
    U16 PixelData;
    U8 Mask = Mask0;
    U8 Diff = Diff0;
    U8 const GUI_UNI_PTR * p = p0;
    U8 x = (U8)x0;
    int NumBytes = NumBytes0;
    if (NumBytes) {
      /* Output start byte (if multiple bytes are output) */
      PixelData   = (*(p + 1) | ((*p) << 8));
      PixelData >>= Shift;
      if (Mode == 0) {
        if (!COLOR) {
          PixelData ^= 255;
        }
        *pVRam = (*pVRam & ~Mask) | (PixelData & Mask);
      } else if (Mode == LCD_DRAWMODE_TRANS) {
        if (COLOR) {
          *pVRam |= (PixelData & Mask);
        } else {
          *pVRam &= ~(PixelData & Mask);
        }
      } else if (Mode == LCD_DRAWMODE_XOR) {
        *pVRam ^= (PixelData & Mask);
      }
      pVRam++;
      { 
        int DiffOld = Diff;
        Diff += 8 - (x & 7); 
        if ((DiffOld & ~7) != (Diff & ~7)) {
          p++;
        }
      }
      x = 0;
      NumBytes--;
      /* Output complete bytes */
      for (; NumBytes; NumBytes--) {
        PixelData   = (*(p + 1) | ((*p) << 8));
        PixelData >>= (8 - (Diff & 7));
        p++;
        if (Mode == 0) {
          if (!COLOR) {
            PixelData ^= 255;
          }
          *pVRam = PixelData & 255;
        } else if (Mode == LCD_DRAWMODE_TRANS) {
          if (COLOR) {
            *pVRam |= PixelData;
          } else {
            *pVRam &= ~PixelData;
          }
        } else if (Mode == LCD_DRAWMODE_XOR) {
          *pVRam = *pVRam ^ PixelData;
        }
        pVRam++;
      }
      Mask = 0xff;
    }
    PixelData   = (*(p + 1) | ((*p) << 8));
    PixelData >>= (8 + (x & 7) - (Diff & 7));
    Mask &= EndMask;
    if (Mode == 0) {
      if (!COLOR) {
        PixelData ^= 255;
      }
      *pVRam = (*pVRam & ~Mask) | (PixelData & Mask);
    } else if (Mode == LCD_DRAWMODE_TRANS) {
      if (COLOR) {
        *pVRam |= (PixelData & Mask);
      } else {
        *pVRam &= ~(PixelData & Mask);
      }
    } else if (Mode == LCD_DRAWMODE_XOR) {
      *pVRam ^= (PixelData & Mask);
    }
    /* Calculate data for new line */
    p0 += BytesPerLine;
    pVRam0 += LCD_BYTESPERLINE;
    pVRam = pVRam0;
  } while (--ysize);
}

/*********************************************************************
*
*       _DrawBitLine1BPP (not optimized)
*/
#else

#if LCD_ALLOW_NON_OPTIMIZED_MODE == 0
  #error Non-optimized mode. Please select an other mode, define LCD_ALLOW_NON_OPTIMIZED_MODE in LCDCOnf.h or contact [e-mail].
#endif

static void  _DrawBitLine1BPP(int x, int y, U8 const GUI_UNI_PTR *p, int Diff, int xsize, const LCD_PIXELINDEX*pTrans) {
  PIXELCOLOR pixels;
  LCD_PIXELINDEX Index0, Index1;
  #if (GUI_USE_MEMDEV_1BPP_FOR_SCREEN == 1)
    const LCD_PIXELINDEX aTrans[2] = {0, 1};
    if (!pTrans) {
      pTrans = aTrans;
    }
  #endif
  Index0 = *(pTrans + 0);
  Index1 = *(pTrans + 1);
/*
   Jump to right entry point
*/
  pixels = *p;
  switch (GUI_Context.DrawMode & (LCD_DRAWMODE_TRANS|LCD_DRAWMODE_XOR)) {
  case 0:
    switch (Diff&7) {
    case 0:   
      goto WriteBit0;
    case 1:   
      goto WriteBit1;
    case 2:
      goto WriteBit2;
    case 3:
      goto WriteBit3;
    case 4:
      goto WriteBit4;
    case 5:   
      goto WriteBit5;
    case 6:   
      goto WriteBit6;
    case 7:   
      goto WriteBit7;
    }
    break;
  case LCD_DRAWMODE_TRANS:
    switch (Diff&7) {
    case 0:
      goto WriteTBit0;
    case 1:
      goto WriteTBit1;
    case 2:
      goto WriteTBit2;
    case 3:
      goto WriteTBit3;
    case 4:
      goto WriteTBit4;
    case 5:   
      goto WriteTBit5;
    case 6:   
      goto WriteTBit6;
    case 7:   
      goto WriteTBit7;
    }
    break;
  case LCD_DRAWMODE_XOR | LCD_DRAWMODE_TRANS:
  case LCD_DRAWMODE_XOR:
    switch (Diff&7) {
    case 0:   
      goto WriteXBit0;
    case 1:   
      goto WriteXBit1;
    case 2:
      goto WriteXBit2;
    case 3:
      goto WriteXBit3;
    case 4:
      goto WriteXBit4;
    case 5:   
      goto WriteXBit5;
    case 6:   
      goto WriteXBit6;
    case 7:   
      goto WriteXBit7;
    }
  }
/*
        Write with transparency
*/
  WriteTBit0:
    if (pixels&(1<<7)) SETPIXEL(x+0, y, Index1);
    if (!--xsize)
      return;
  WriteTBit1:
    if (pixels&(1<<6)) SETPIXEL(x+1, y, Index1);
    if (!--xsize)
      return;
  WriteTBit2:
    if (pixels&(1<<5)) SETPIXEL(x+2, y, Index1);
    if (!--xsize)
      return;
  WriteTBit3:
    if (pixels&(1<<4)) SETPIXEL(x+3, y, Index1);
    if (!--xsize)
      return;
  WriteTBit4:
    if (pixels&(1<<3)) SETPIXEL(x+4, y, Index1);
    if (!--xsize)
      return;
  WriteTBit5:
    if (pixels&(1<<2)) SETPIXEL(x+5, y, Index1);
    if (!--xsize)
      return;
  WriteTBit6:
    if (pixels&(1<<1)) SETPIXEL(x+6, y, Index1);
    if (!--xsize)
      return;
  WriteTBit7:
    if (pixels&(1<<0)) SETPIXEL(x+7, y, Index1);
    if (!--xsize)
      return;
    x+=8;
    pixels = *(++p);
    goto WriteTBit0;

/*
        Write without transparency
*/
  WriteBit0:
    SETPIXEL(x+0, y, (pixels&(1<<7)) ? Index1 : Index0);
    if (!--xsize)
      return;
  WriteBit1:
    SETPIXEL(x+1, y, (pixels&(1<<6)) ? Index1 : Index0);
    if (!--xsize)
      return;
  WriteBit2:
    SETPIXEL(x+2, y, (pixels&(1<<5)) ? Index1 : Index0);
    if (!--xsize)
      return;
  WriteBit3:
    SETPIXEL(x+3, y, (pixels&(1<<4)) ? Index1 : Index0);
    if (!--xsize)
      return;
  WriteBit4:
    SETPIXEL(x+4, y, (pixels&(1<<3)) ? Index1 : Index0);
    if (!--xsize)
      return;
  WriteBit5:
    SETPIXEL(x+5, y, (pixels&(1<<2)) ? Index1 : Index0);
    if (!--xsize)
      return;
  WriteBit6:
    SETPIXEL(x+6, y, (pixels&(1<<1)) ? Index1 : Index0);
    if (!--xsize)
      return;
  WriteBit7:
    SETPIXEL(x+7, y, (pixels&(1<<0)) ? Index1 : Index0);
    if (!--xsize)
      return;
    x+=8;
    pixels = *(++p);
    goto WriteBit0;
/*
        Write XOR mode
*/
  WriteXBit0:
    if (pixels&(1<<7))
      XORPIXEL(x+0, y);
    if (!--xsize)
      return;
  WriteXBit1:
    if (pixels&(1<<6))
      XORPIXEL(x+1, y);
    if (!--xsize)
      return;
  WriteXBit2:
    if (pixels&(1<<5))
      XORPIXEL(x+2, y);
    if (!--xsize)
      return;
  WriteXBit3:
    if (pixels&(1<<4))
      XORPIXEL(x+3, y);
    if (!--xsize)
      return;
  WriteXBit4:
    if (pixels&(1<<3))
      XORPIXEL(x+4, y);
    if (!--xsize)
      return;
  WriteXBit5:
    if (pixels&(1<<2))
      XORPIXEL(x+5, y);
    if (!--xsize)
      return;
  WriteXBit6:
    if (pixels&(1<<1))
      XORPIXEL(x+6, y);
    if (!--xsize)
      return;
  WriteXBit7:
    if (pixels&(1<<0))
      XORPIXEL(x+7, y);
    if (!--xsize)
      return;
    x+=8;
    pixels = *(++p);
    goto WriteXBit0;
}
#endif

/*********************************************************************
*
*       _DrawBitLine2BPP (optimized)
*/
#if (LCD_MAX_LOG_COLORS > 2)

#if  (!LCD_SWAP_XY)

static void  _DrawBitLine2BPP(int x, int y, U8 const GUI_UNI_PTR *p, int Diff, int xsize, const LCD_PIXELINDEX*pTrans) {
  PIXELCOLOR pixels;
/*
   Jump to right entry point
*/
  pixels = *p;
  if (GUI_Context.DrawMode & LCD_DRAWMODE_TRANS) {
    switch (Diff&3) {
    case 0:
      goto WriteTBit0;
    case 1:
      goto WriteTBit1;
    case 2:
      goto WriteTBit2;
    default:
      goto WriteTBit3;
    }
  } else {
    switch (Diff&3) {
    case 0:
      goto WriteBit0;
    case 1:
      goto WriteBit1;
    case 2:
      goto WriteBit2;
    default:
      goto WriteBit3;
    }
  }
/*
        Write without transparency
*/
WriteBit0:
  SETPIXELFAST(x+0, y, *(pTrans+(pixels>>6)));
  if (!--xsize)
    return;
WriteBit1:
  SETPIXELFAST(x+1, y, *(pTrans+(3&(pixels>>4))));
  if (!--xsize)
    return;
WriteBit2:
  SETPIXELFAST(x+2, y, *(pTrans+(3&(pixels>>2))));
  if (!--xsize)
    return;
WriteBit3:
  SETPIXELFAST(x+3, y, *(pTrans+(3&(pixels))));
  if (!--xsize)
    return;
  pixels = *(++p);
  x+=4;
  goto WriteBit0;
/*
        Write with transparency
*/
WriteTBit0:
  if (pixels&(3<<6))
    SETPIXELFAST(x+0, y, *(pTrans+(pixels>>6)));
  if (!--xsize)
    return;
WriteTBit1:
  if (pixels&(3<<4))
    SETPIXELFAST(x+1, y, *(pTrans+(3&(pixels>>4))));
  if (!--xsize)
    return;
WriteTBit2:
  if (pixels&(3<<2))
    SETPIXELFAST(x+2, y, *(pTrans+(3&(pixels>>2))));
  if (!--xsize)
    return;
WriteTBit3:
  if (pixels&(3<<0))
    SETPIXELFAST(x+3, y, *(pTrans+(3&(pixels))));
  if (!--xsize)
    return;
  pixels = *(++p);
  x+=4;
  goto WriteTBit0;
}

#else

/*********************************************************************
*
*       _DrawBitLine2BPP (not optimized)
*/

#if (LCD_BITSPERPIXEL == 2)
  #if LCD_ALLOW_NON_OPTIMIZED_MODE == 0
    #error Non-optimized mode. Please select an other mode, define LCD_ALLOW_NON_OPTIMIZED_MODE in LCDCOnf.h or contact [e-mail].
  #endif
#endif

static void  _DrawBitLine2BPP(int x, int y, U8 const GUI_UNI_PTR *p, int Diff, int xsize, const LCD_PIXELINDEX*pTrans) {
  LCD_PIXELINDEX pixels;
/*
// Jump to right entry point
*/
  pixels = *p;
  if (GUI_Context.DrawMode & LCD_DRAWMODE_TRANS) switch (Diff&3) {
  case 0:
    goto WriteTBit0;
  case 1:
    goto WriteTBit1;
  case 2:
    goto WriteTBit2;
  default:
    goto WriteTBit3;
  } else switch (Diff&3) {
  case 0:
    goto WriteBit0;
  case 1:
    goto WriteBit1;
  case 2:
    goto WriteBit2;
  default:
    goto WriteBit3;
  }
/*
        Write without transparency
*/
WriteBit0:
  SETPIXEL(x+0, y, *(pTrans+(pixels>>6)));
  if (!--xsize)
    return;
WriteBit1:
  SETPIXEL(x+1, y, *(pTrans+(3&(pixels>>4))));
  if (!--xsize)
    return;
WriteBit2:
  SETPIXEL(x+2, y, *(pTrans+(3&(pixels>>2))));
  if (!--xsize)
    return;
WriteBit3:
  SETPIXEL(x+3, y, *(pTrans+(3&(pixels))));
  if (!--xsize)
    return;
  pixels = *(++p);
  x+=4;
  goto WriteBit0;
/*
        Write with transparency
*/
WriteTBit0:
  if (pixels&(3<<6))