GUIAAChar.c
上传用户:zbk8730
上传日期:2017-08-10
资源大小:12168k
文件大小:5k
- /*
- *********************************************************************************************************
- * 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
- ----------------------------------------------------------------------
- Version-Date---Author-Explanation
- ----------------------------------------------------------------------
- 1.00.00 990922 RS First release
- ----------------------------------------------------------------------
- Known problems or limitations with current version
- ----------------------------------------------------------------------
- Module needs cleanup and review, but is fully functional.
- ---------------------------END-OF-HEADER------------------------------
- */
- #include "GUI_Private.H"
-
- #include <stdio.h>
- #include <string.h>
- /*
- ***********************************************************
- * *
- * Anti-aliased drawing *
- * *
- ***********************************************************
- */
- static const U8 Bit2Mask0[] = {1<<7, 1<<5, 1<<3, 1<<1};
- static const U8 Bit2Mask1[] = {1<<6, 1<<4, 1<<2, 1<<0};
- typedef void tSetPixelAA(int x, int y, U8 Intens);
- 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;
- }
- }
- /*
- ***********************************************************
- * *
- * Font handling *
- * *
- ***********************************************************
- */
- 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;
- }
- 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;
- }
- }
- 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;
- }
- void GUIPROPAA_GetFontInfo(void*pFont, GUI_FONTINFO* pfi) {
- GUI_USE_PARA(pFont);
- pfi->Flags = GUI_FONTINFO_FLAG_PROP | GUI_FONTINFO_FLAG_AA;
- }
- char GUIPROPAA_IsInFont(void*pFont, U16 c) {
- const GUI_FONT_PROP* pProp = GUIPROP_FindChar(((GUI_FONT*)pFont)->p.pProp, c);
- return (pProp==NULL) ? 0 : 1;
- }
- /* End of file */