/* * TEGblt - ImageText expanded glyph fonts only. For * 8 bit displays, in Copy mode with no clipping. */ /* Copyright 1989 by the Massachusetts Institute of Technology Permission to use, copy, modify, and distribute this software and its documentation for any purpose and without fee is hereby granted, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation, and that the name of M.I.T. not be used in advertising or publicity pertaining to distribution of the software without specific, written prior permission. M.I.T. makes no representations about the suitability of this software for any purpose. It is provided "as is" without express or implied warranty. */ /* $XConsortium: cfbteblt8.c,v 5.18 92/05/04 16:34:02 rws Exp $ */ #if PSZ == 8 #include "X.h" #include "Xmd.h" #include "Xproto.h" #include "cfb.h" #include "fontstruct.h" #include "dixfontstr.h" #include "gcstruct.h" #include "windowstr.h" #include "scrnintstr.h" #include "pixmapstr.h" #include "regionstr.h" #include "cfbmskbits.h" #include "cfb8bit.h" /* * this code supports up to 5 characters at a time. The performance * differences between 4 and 5 is usually small (~7% on PMAX) and * frequently negative (SPARC and Sun3), so this file is compiled * only once for now. If you want to use the other options, you'll * need to hack cfbgc.c as well. */ #ifndef NGLYPHS #define NGLYPHS 4 #define DO_COMMON #endif #ifdef DO_COMMON #define CFBTEGBLT8 cfbTEGlyphBlt8 #endif /* * On little-endian machines (or where fonts are padded to 32-bit * boundaries) we can use some magic to avoid the expense of getleftbits */ #if ((BITMAP_BIT_ORDER == LSBFirst && NGLYPHS >= 4) || GLYPHPADBYTES == 4) #if GLYPHPADBYTES == 1 typedef unsigned char *glyphPointer; #define USE_LEFTBITS #endif #if GLYPHPADBYTES == 2 typedef unsigned short *glyphPointer; #define USE_LEFTBITS #endif #if GLYPHPADBYTES == 4 typedef unsigned int *glyphPointer; #endif #define GetBitsL c = BitLeft (*leftChar++, lshift) #define NGetBits1S(r) c = BitRight(*char1++ r, xoff1) #define NGetBits1L(r) GetBitsL | BitRight(*char1++ r, xoff1) #define NGetBits1U(r) c = *char1++ r #define NGetBits2S(r) NGetBits1S(| BitRight(*char2++ r, widthGlyph)) #define NGetBits2L(r) NGetBits1L(| BitRight(*char2++ r, widthGlyph)) #define NGetBits2U(r) NGetBits1U(| BitRight(*char2++ r, widthGlyph)) #define NGetBits3S(r) NGetBits2S(| BitRight(*char3++ r, widthGlyph)) #define NGetBits3L(r) NGetBits2L(| BitRight(*char3++ r, widthGlyph)) #define NGetBits3U(r) NGetBits2U(| BitRight(*char3++ r, widthGlyph)) #define NGetBits4S(r) NGetBits3S(| BitRight(*char4++ r, widthGlyph)) #define NGetBits4L(r) NGetBits3L(| BitRight(*char4++ r, widthGlyph)) #define NGetBits4U(r) NGetBits3U(| BitRight(*char4++ r, widthGlyph)) #define NGetBits5S(r) NGetBits4S(| BitRight(*char5++ r, widthGlyph)) #define NGetBits5L(r) NGetBits4L(| BitRight(*char5++ r, widthGlyph)) #define NGetBits5U(r) NGetBits4U(| BitRight(*char5++ r, widthGlyph)) #define GetBits1S c = BitRight(*char1++, xoff1) #define GetBits1L GetBitsL | BitRight(*char1++, xoff1) #define GetBits1U c = *char1++ #define GetBits2S NGetBits1S(| BitRight(*char2++, widthGlyph)) #define GetBits2L NGetBits1L(| BitRight(*char2++, widthGlyph)) #define GetBits2U NGetBits1U(| BitRight(*char2++, widthGlyph)) #define GetBits3S NGetBits2S(| BitRight(*char3++, widthGlyph)) #define GetBits3L NGetBits2L(| BitRight(*char3++, widthGlyph)) #define GetBits3U NGetBits2U(| BitRight(*char3++, widthGlyph)) #define GetBits4S NGetBits3S(| BitRight(*char4++, widthGlyph)) #define GetBits4L NGetBits3L(| BitRight(*char4++, widthGlyph)) #define GetBits4U NGetBits3U(| BitRight(*char4++, widthGlyph)) #define GetBits5S NGetBits4S(| BitRight(*char5++, widthGlyph)) #define GetBits5L NGetBits4L(| BitRight(*char5++, widthGlyph)) #define GetBits5U NGetBits4U(| BitRight(*char5++, widthGlyph)) #else typedef unsigned int *glyphPointer; #define USE_LEFTBITS #define ALL_LEFTBITS #define GetBitsL WGetBitsL #define GetBits1S WGetBits1S #define GetBits1L WGetBits1L #define GetBits1U WGetBits1U #define GetBits2S GetBits1S Get1Bits (char2, tmpSrc) \ c |= BitRight(tmpSrc, xoff2); #define GetBits2L GetBits1L Get1Bits (char2, tmpSrc) \ c |= BitRight(tmpSrc, xoff2); #define GetBits2U GetBits1U Get1Bits (char2, tmpSrc) \ c |= BitRight(tmpSrc, xoff2); #define GetBits3S GetBits2S Get1Bits (char3, tmpSrc) \ c |= BitRight(tmpSrc, xoff3); #define GetBits3L GetBits2L Get1Bits (char3, tmpSrc) \ c |= BitRight(tmpSrc, xoff3); #define GetBits3U GetBits2U Get1Bits (char3, tmpSrc) \ c |= BitRight(tmpSrc, xoff3); #define GetBits4S GetBits3S Get1Bits (char4, tmpSrc) \ c |= BitRight(tmpSrc, xoff4); #define GetBits4L GetBits3L Get1Bits (char4, tmpSrc) \ c |= BitRight(tmpSrc, xoff4); #define GetBits4U GetBits3U Get1Bits (char4, tmpSrc) \ c |= BitRight(tmpSrc, xoff4); #define GetBits5S GetBits4S Get1Bits (char5, tmpSrc) \ c |= BitRight(tmpSrc, xoff5); #define GetBits5L GetBits4L Get1Bits (char5, tmpSrc) \ c |= BitRight(tmpSrc, xoff5); #define GetBits5U GetBits4U Get1Bits (char5, tmpSrc) \ c |= BitRight(tmpSrc, xoff5); #endif #ifdef USE_LEFTBITS extern long endtab[]; #define IncChar(c) (c = (glyphPointer) (((char *) c) + glyphBytes)) #define Get1Bits(ch,dst) glyphbits (ch, widthGlyph, glyphMask, dst); \ IncChar (ch); #define glyphbits(bits,width,mask,dst) getleftbits(bits,width,dst); \ dst &= mask; #define WGetBitsL Get1Bits(leftChar,c); \ c = BitLeft (c, lshift); #define WGetBits1S Get1Bits (char1, c) \ c = BitRight (c, xoff1); #define WGetBits1L WGetBitsL Get1Bits (char1, tmpSrc) \ c |= BitRight (tmpSrc, xoff1); #define WGetBits1U Get1Bits (char1, c) #else #define WGetBitsL GetBitsL #define WGetBits1S GetBits1S #define WGetBits1L GetBits1L #define WGetBits1U GetBits1U #endif #if NGLYPHS == 2 # define GetBitsNS GetBits2S # define GetBitsNL GetBits2L # define GetBitsNU GetBits2U # define LastChar char2 #ifndef CFBTEGBLT8 # define CFBTEGBLT8 cfbTEGlyphBlt8x2 #endif #endif #if NGLYPHS == 3 # define GetBitsNS GetBits3S # define GetBitsNL GetBits3L # define GetBitsNU GetBits3U # define LastChar char3 #ifndef CFBTEGBLT8 # define CFBTEGBLT8 cfbTEGlyphBlt8x3 #endif #endif #if NGLYPHS == 4 # define GetBitsNS GetBits4S # define GetBitsNL GetBits4L # define GetBitsNU GetBits4U # define LastChar char4 #ifndef CFBTEGBLT8 # define CFBTEGBLT8 cfbTEGlyphBlt8x4 #endif #endif #if NGLYPHS == 5 # define GetBitsNS GetBits5S # define GetBitsNL GetBits5L # define GetBitsNU GetBits5U # define LastChar char5 #ifndef CFBTEGBLT8 # define CFBTEGBLT8 cfbTEGlyphBlt8x5 #endif #endif /* another ugly giant macro */ #define SwitchEm switch (ew) \ { \ case 0: \ break; \ case 1: \ while (hTmp--) { \ GetBits; \ StoreBits0 \ Loop \ } \ break; \ case 2: \ while (hTmp--) { \ GetBits; \ StoreBits0 FirstStep StoreBits(1) \ Loop \ } \ break; \ case 3: \ while (hTmp--) { \ GetBits; \ StoreBits0 FirstStep StoreBits(1) Step StoreBits(2) \ Loop \ } \ break; \ case 4: \ while (hTmp--) { \ GetBits; \ StoreBits0 FirstStep StoreBits(1) Step \ StoreBits(2) Step StoreBits(3) \ Loop \ } \ break; \ case 5: \ while (hTmp--) { \ GetBits; \ StoreBits0 FirstStep StoreBits(1) Step \ StoreBits(2) Step StoreBits(3) Step \ StoreBits(4) \ Loop \ } \ break; \ case 6: \ while (hTmp--) { \ GetBits; \ StoreBits0 FirstStep StoreBits(1) Step \ StoreBits(2) Step StoreBits(3) Step \ StoreBits(4) Step StoreBits(5) \ Loop \ } \ break; \ case 7: \ while (hTmp--) { \ GetBits; \ StoreBits0 FirstStep StoreBits(1) Step \ StoreBits(2) Step StoreBits(3) Step \ StoreBits(4) Step StoreBits(5) Step \ StoreBits(6) \ Loop \ } \ break; \ case 8: \ while (hTmp--) { \ GetBits; \ StoreBits0 FirstStep StoreBits(1) Step \ StoreBits(2) Step StoreBits(3) Step \ StoreBits(4) Step StoreBits(5) Step \ StoreBits(6) Step StoreBits(7) \ Loop \ } \ break; \ } #ifdef FAST_CONSTANT_OFFSET_MODE #define StorePixels(o,p) dst[o] = p #define Loop dst += widthDst; #else #define StorePixels(o,p) *dst++ = (p) #define Loop dst += widthLeft; #endif #define Step NextFourBits(c); #if (BITMAP_BIT_ORDER == MSBFirst) #define StoreBits(o) StorePixels(o,GetFourPixels(c)); #define FirstStep Step #else #define StoreBits(o) StorePixels(o,*((unsigned long *) (((char *) cfb8Pixels) + (c & 0x3c)))); #define FirstStep c = BitLeft (c, 2); #endif extern void cfbImageGlyphBlt8(); void CFBTEGBLT8 (pDrawable, pGC, xInit, yInit, nglyph, ppci, pglyphBase) DrawablePtr pDrawable; GC *pGC; int xInit, yInit; unsigned int nglyph; CharInfoPtr *ppci; /* array of character info */ unsigned char *pglyphBase; /* start of array of glyphs */ { register unsigned long c; register unsigned long *dst; register unsigned long leftMask, rightMask; register int hTmp; register int xoff1; register glyphPointer char1; register glyphPointer char2; #if NGLYPHS >= 3 register glyphPointer char3; #endif #if NGLYPHS >= 4 register glyphPointer char4; #endif #if NGLYPHS >= 5 register glyphPointer char5; #endif #ifdef ALL_LEFTBITS int xoff2, xoff3, xoff4, xoff5; #endif FontPtr pfont = pGC->font; unsigned long *dstLine; glyphPointer oldRightChar; unsigned long *pdstBase; glyphPointer leftChar; int widthDst, widthLeft; int widthGlyph; int h; int ew; int x, y; BoxRec bbox; /* for clipping */ int lshift; int widthGlyphs; #ifdef USE_LEFTBITS register int glyphMask; register unsigned int tmpSrc; register int glyphBytes; #endif widthGlyph = FONTMAXBOUNDS(pfont,characterWidth); h = FONTASCENT(pfont) + FONTDESCENT(pfont); if (!h) return; x = xInit + FONTMAXBOUNDS(pfont,leftSideBearing) + pDrawable->x; y = yInit - FONTASCENT(pfont) + pDrawable->y; bbox.x1 = x; bbox.x2 = x + (widthGlyph * nglyph); bbox.y1 = y; bbox.y2 = y + h; switch ((*pGC->pScreen->RectIn)( ((cfbPrivGC *)(pGC->devPrivates[cfbGCPrivateIndex].ptr))->pCompositeClip, &bbox)) { case rgnPART: cfbImageGlyphBlt8(pDrawable, pGC, xInit, yInit, nglyph, ppci, pglyphBase); case rgnOUT: return; } if (!cfb8CheckPixels (pGC->fgPixel, pGC->bgPixel)) cfb8SetPixels (pGC->fgPixel, pGC->bgPixel); leftChar = 0; cfbGetLongWidthAndPointer(pDrawable, widthDst, pdstBase) #if NGLYPHS == 2 widthGlyphs = widthGlyph << 1; #else #if NGLYPHS == 4 widthGlyphs = widthGlyph << 2; #else widthGlyphs = widthGlyph * NGLYPHS; #endif #endif #ifdef USE_LEFTBITS glyphMask = endtab[widthGlyph]; glyphBytes = GLYPHWIDTHBYTESPADDED(*ppci); #endif pdstBase += y * widthDst; #ifdef DO_COMMON if (widthGlyphs <= 32) #endif while (nglyph >= NGLYPHS) { nglyph -= NGLYPHS; hTmp = h; dstLine = pdstBase + (x >> 2); xoff1 = x & 0x3; char1 = (glyphPointer) FONTGLYPHBITS(pglyphBase, *ppci++); char2 = (glyphPointer) FONTGLYPHBITS(pglyphBase, *ppci++); #ifdef ALL_LEFTBITS xoff2 = xoff1 + widthGlyph; #endif #if NGLYPHS >= 3 char3 = (glyphPointer) FONTGLYPHBITS(pglyphBase, *ppci++); #ifdef ALL_LEFTBITS xoff3 = xoff2 + widthGlyph; #endif #endif #if NGLYPHS >= 4 char4 = (glyphPointer) FONTGLYPHBITS(pglyphBase, *ppci++); #ifdef ALL_LEFTBITS xoff4 = xoff3 + widthGlyph; #endif #endif #if NGLYPHS >= 5 char5 = (glyphPointer) FONTGLYPHBITS(pglyphBase, *ppci++); #ifdef ALL_LEFTBITS xoff5 = xoff4 + widthGlyph; #endif #endif oldRightChar = LastChar; dst = dstLine; if (xoff1) { ew = ((widthGlyphs - (4 - xoff1)) >> 2) + 1; #ifndef FAST_CONSTANT_OFFSET_MODE widthLeft = widthDst - ew; #endif if (!leftChar) { leftMask = cfbendtab[xoff1]; rightMask = cfbstarttab[xoff1]; #define StoreBits0 StorePixels (0,dst[0] & leftMask | \ GetFourPixels(c) & rightMask); #define GetBits GetBitsNS SwitchEm #undef GetBits #undef StoreBits0 } else { lshift = widthGlyph - xoff1; #define StoreBits0 StorePixels (0,GetFourPixels(c)); #define GetBits GetBitsNL SwitchEm #undef GetBits #undef StoreBits0 } } else { #if NGLYPHS == 4 ew = widthGlyph; /* widthGlyphs >> 2 */ #else ew = widthGlyphs >> 2; #endif #ifndef FAST_CONSTANT_OFFSET_MODE widthLeft = widthDst - ew; #endif #define StoreBits0 StorePixels (0,GetFourPixels(c)); #define GetBits GetBitsNU SwitchEm #undef GetBits #undef StoreBits0 } x += widthGlyphs; leftChar = oldRightChar; } while (nglyph--) { xoff1 = x & 0x3; char1 = (glyphPointer) FONTGLYPHBITS(pglyphBase, *ppci++); hTmp = h; dstLine = pdstBase + (x >> 2); oldRightChar = char1; dst = dstLine; if (xoff1) { ew = ((widthGlyph - (4 - xoff1)) >> 2) + 1; #ifndef FAST_CONSTANT_OFFSET_MODE widthLeft = widthDst - ew; #endif if (!leftChar) { leftMask = cfbendtab[xoff1]; rightMask = cfbstarttab[xoff1]; #define StoreBits0 StorePixels (0,dst[0] & leftMask | GetFourPixels(c) & rightMask); #define GetBits WGetBits1S SwitchEm #undef GetBits #undef StoreBits0 } else { lshift = widthGlyph - xoff1; #define StoreBits0 StorePixels (0,GetFourPixels(c)); #define GetBits WGetBits1L SwitchEm #undef GetBits #undef StoreBits0 } } else { ew = widthGlyph >> 2; #ifndef FAST_CONSTANT_OFFSET_MODE widthLeft = widthDst - ew; #endif #define StoreBits0 StorePixels (0,GetFourPixels(c)); #define GetBits WGetBits1U SwitchEm #undef GetBits #undef StoreBits0 } x += widthGlyph; leftChar = oldRightChar; } /* * draw the tail of the last character */ xoff1 = x & 3; if (xoff1) { rightMask = cfbstarttab[xoff1]; leftMask = cfbendtab[xoff1]; lshift = widthGlyph - xoff1; dst = pdstBase + (x >> 2); hTmp = h; while (hTmp--) { GetBitsL; *dst = (*dst & rightMask) | (GetFourPixels(c) & leftMask); dst += widthDst; } } } #endif /* PSZ == 8 */