168 lines
5.2 KiB
C
168 lines
5.2 KiB
C
/*
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*********************************************************************************************************
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* uC/GUI
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* Universal graphic software for embedded applications
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*
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* (c) Copyright 2002, Micrium Inc., Weston, FL
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* (c) Copyright 2002, SEGGER Microcontroller Systeme GmbH
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*
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* µC/GUI is protected by international copyright laws. Knowledge of the
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* source code may not be used to write a similar product. This file may
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* only be used in accordance with a license and should not be redistributed
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* in any way. We appreciate your understanding and fairness.
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*
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----------------------------------------------------------------------
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File : GUICharAA.C
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Purpose : Display antialiased
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---------------------------END-OF-HEADER------------------------------
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*/
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#include "GUI_Private.h"
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#if GUI_SUPPORT_AA
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#include <stdio.h>
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#include <string.h>
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/*********************************************************************
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*
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* Types
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*
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**********************************************************************
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*/
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typedef void tSetPixelAA(int x, int y, U8 Intens);
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/*********************************************************************
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*
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* Static data
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*
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**********************************************************************
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*/
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static const U8 Bit2Mask0[] = {1<<7, 1<<5, 1<<3, 1<<1};
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static const U8 Bit2Mask1[] = {1<<6, 1<<4, 1<<2, 1<<0};
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/*********************************************************************
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*
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* Static code
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*
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**********************************************************************
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*/
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/*********************************************************************
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*
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* Draw
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*/
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static void Draw(int x0, int y0, int XSize, int YSize, int BytesPerLine, const U8*pData) {
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int x, y;
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tSetPixelAA* pfSetPixelAA;
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pfSetPixelAA = (GUI_Context.TextMode & GUI_TM_TRANS)
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? LCD_SetPixelAA : LCD_SetPixelAA_NoTrans;
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for (y=0; y<YSize; y++) {
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const U8* pData0 = pData;
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const U8* pData1 = pData+BytesPerLine;
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for (x=0; x<XSize; x++) {
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int PixelCnt=0;
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int Mask0 = Bit2Mask0[x&3];
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int Mask1 = Bit2Mask1[x&3];
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if ((*pData0) & Mask0)
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PixelCnt++;
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if ((*pData0) & Mask1)
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PixelCnt++;
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if ((*pData1) & Mask0)
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PixelCnt++;
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if ((*pData1) & Mask1)
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PixelCnt++;
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if ((x&3) ==3) {
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pData0++;
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pData1++;
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}
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switch (PixelCnt) {
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case 4: LCD_HL_DrawPixel(x0+x,y0+y); break;
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case 3: (*pfSetPixelAA) (x0+x,y0+y, 12); break;
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case 2: (*pfSetPixelAA) (x0+x,y0+y, 8); break;
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case 1: (*pfSetPixelAA) (x0+x,y0+y, 4); break;
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}
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}
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pData+=2*BytesPerLine;
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}
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}
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/*********************************************************************
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*
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* GUIPROP_FindChar
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*/
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static const GUI_FONT_PROP* GUIPROP_FindChar(const GUI_FONT_PROP* pProp, U16P c) {
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for (pProp = GUI_Context.pAFont->p.pProp; pProp; pProp=(const GUI_FONT_PROP*) pProp->pNext) {
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if ((c>=pProp->First) && (c<=pProp->Last))
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break;
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}
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return pProp;
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}
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/*********************************************************************
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*
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* Public code
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*
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**********************************************************************
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*/
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/*********************************************************************
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*
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* GUIPROPAA_DispChar
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*/
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void GUIPROPAA_DispChar(U16P c) {
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int BytesPerLine;
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GUI_DRAWMODE DrawMode = GUI_Context.TextMode;
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const GUI_FONT_PROP* pProp = GUIPROP_FindChar(GUI_Context.pAFont->p.pProp, c);
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if (pProp) {
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GUI_DRAWMODE OldDrawMode;
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const GUI_CHARINFO* pCharInfo = pProp->paCharInfo+(c-pProp->First);
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BytesPerLine = pCharInfo->BytesPerLine;
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OldDrawMode = LCD_SetDrawMode(DrawMode);
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Draw ( GUI_Context.DispPosX, GUI_Context.DispPosY,
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(pCharInfo->XSize+1)/2,
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GUI_Context.pAFont->YSize,
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BytesPerLine,
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(U8 const*) pCharInfo->pData
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);
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LCD_SetDrawMode(OldDrawMode); /* Restore draw mode */
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GUI_Context.DispPosX += (pCharInfo->XDist+1)/2;
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}
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}
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/*********************************************************************
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*
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* GUIPROPAA_GetCharDistX
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*/
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int GUIPROPAA_GetCharDistX(U16P c) {
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int r;
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const GUI_FONT_PROP* pProp = GUIPROP_FindChar(GUI_Context.pAFont->p.pProp, c);
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r = (pProp) ? (pProp->paCharInfo+(c-pProp->First))->XSize : 0;
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return (r+1)/2;
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}
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/*********************************************************************
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*
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* GUIPROPAA_GetFontInfo
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*/
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void GUIPROPAA_GetFontInfo(const GUI_FONT * pFont, GUI_FONTINFO* pfi) {
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GUI_USE_PARA(pFont);
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pfi->Flags = GUI_FONTINFO_FLAG_PROP | GUI_FONTINFO_FLAG_AA;
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}
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/*********************************************************************
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*
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* GUIPROPAA_IsInFont
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*/
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char GUIPROPAA_IsInFont(const GUI_FONT * pFont, U16 c) {
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const GUI_FONT_PROP* pProp = GUIPROP_FindChar(pFont->p.pProp, c);
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return (pProp==NULL) ? 0 : 1;
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}
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#else /* Avoid problems with empty object modules */
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void GUIAAChar_C(void);
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void GUIAAChar_C(void) {}
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#endif /* GUI_SUPPORT_AA */
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/*************************** End of file ****************************/
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