guiaachar.c

MCB2300_ucgui_LCD320240.rar LPC2368的uc/gui的移植

/*
*********************************************************************************************************
*   											 uC/GUI
*   					 Universal graphic software for embedded applications
*
*   					(c) Copyright 2002, Micrium Inc., Weston, FL
*   					(c) Copyright 2002, SEGGER Microcontroller Systeme GmbH
*
*   		   礐/GUI is protected by international copyright laws. Knowledge of the
*   		   source code may not be used to write a similar product. This file may
*   		   only be used in accordance with a license and should not be redistributed
*   		   in any way. We appreciate your understanding and fairness.
*
----------------------------------------------------------------------
File		: GUICharAA.C
Purpose 	: Display antialiased
---------------------------END-OF-HEADER------------------------------
*/

#include "GUI_Private.h"

#if GUI_SUPPORT_AA

#include <stdio.h>
#include <string.h>

/*********************************************************************
*
*   	Types
*
**********************************************************************
*/

typedef void tSetPixelAA(int x, int y, U8 Intens);

/*********************************************************************
*
*   	Static data
*
**********************************************************************
*/

static const U8 Bit2Mask0[] = {1 << 7, 1 << 5, 1 << 3, 1 << 1};
static const U8 Bit2Mask1[] = {1 << 6, 1 << 4, 1 << 2, 1 << 0};

/*********************************************************************
*
*   	Static code
*
**********************************************************************
*/
/*********************************************************************
*
*   	Draw
*/
static void Draw(int x0, int y0, int XSize, int YSize, int BytesPerLine, const U8 *pData)
{
	int x, y;
	tSetPixelAA* pfSetPixelAA;
	pfSetPixelAA = (GUI_Context.TextMode & GUI_TM_TRANS) ? LCD_SetPixelAA : LCD_SetPixelAA_NoTrans;
	for (y = 0; y < YSize; y++)
	{
		const U8* pData0 = pData;
		const U8* pData1 = pData + BytesPerLine;
		for (x = 0; x < XSize; x++)
		{
			int PixelCnt = 0;
			int Mask0 = Bit2Mask0[x&3];
			int Mask1 = Bit2Mask1[x&3];
			if ((*pData0) & Mask0)
			{
				PixelCnt++;
			}
			if ((*pData0) & Mask1)
			{
				PixelCnt++;
			}
			if ((*pData1) & Mask0)
			{
				PixelCnt++;
			}
			if ((*pData1) & Mask1)
			{
				PixelCnt++;
			}
			if ((x & 3) == 3)
			{
				pData0++;
				pData1++;
			}
			switch (PixelCnt)
			{
				case 4:
					LCD_HL_DrawPixel(x0 + x, y0 + y);      break;
				case 3:
					(*pfSetPixelAA) (x0 + x, y0 + y, 12); break;
				case 2:
					(*pfSetPixelAA) (x0 + x, y0 + y, 8);  break;
				case 1:
					(*pfSetPixelAA) (x0 + x, y0 + y, 4);  break;
			}
		}
		pData += 2 * BytesPerLine;
	}
}

/*********************************************************************
*
*   	GUIPROP_FindChar
*/
static const GUI_FONT_PROP * GUIPROP_FindChar(const GUI_FONT_PROP *pProp, U16P c)
{
	for (pProp = GUI_Context.pAFont->p.pProp; pProp; pProp = (const GUI_FONT_PROP*) pProp->pNext)
	{
		if ((c >= pProp->First) && (c <= pProp->Last))
		{
			break;
		}
	}
	return pProp;
}

/*********************************************************************
*
*   	Public code
*
**********************************************************************
*/
/*********************************************************************
*
*   	GUIPROPAA_DispChar
*/
void GUIPROPAA_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);
		Draw(GUI_Context.DispPosX, GUI_Context.DispPosY, (pCharInfo->XSize + 1) / 2, GUI_Context.pAFont->YSize, BytesPerLine, (U8 const *) pCharInfo->pData);
		LCD_SetDrawMode(OldDrawMode); /* Restore draw mode */
		GUI_Context.DispPosX += (pCharInfo->XDist + 1) / 2;
	}
}

/*********************************************************************
*
*   	GUIPROPAA_GetCharDistX
*/
int GUIPROPAA_GetCharDistX(U16P c)
{
	int r;
	const GUI_FONT_PROP* pProp = GUIPROP_FindChar(GUI_Context.pAFont->p.pProp, c);
	r = (pProp) ? (pProp->paCharInfo + (c - pProp->First))->XSize : 0;
	return (r + 1) / 2;
}

/*********************************************************************
*
*   	GUIPROPAA_GetFontInfo
*/
void GUIPROPAA_GetFontInfo(const GUI_FONT *pFont, GUI_FONTINFO *pfi)
{
	GUI_USE_PARA(pFont);
	pfi->Flags = GUI_FONTINFO_FLAG_PROP | GUI_FONTINFO_FLAG_AA;
}

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

#else   						 /* Avoid problems with empty object modules */
void GUIAAChar_C(void);
void GUIAAChar_C(void)
{
}
#endif /* GUI_SUPPORT_AA */

/*************************** End of file ****************************/