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-rw-r--r--hw/xfree86/xaa/xaaNonTEText.c588
1 files changed, 588 insertions, 0 deletions
diff --git a/hw/xfree86/xaa/xaaNonTEText.c b/hw/xfree86/xaa/xaaNonTEText.c
new file mode 100644
index 000000000..914631b58
--- /dev/null
+++ b/hw/xfree86/xaa/xaaNonTEText.c
@@ -0,0 +1,588 @@
+/* $XFree86: xc/programs/Xserver/hw/xfree86/xaa/xaaNonTEText.c,v 1.12 2000/04/07 19:11:10 mvojkovi Exp $ */
+
+/********************************************************************
+
+ In this file we have GC level replacements for PolyText8/16,
+ ImageText8/16, ImageGlyphBlt and PolyGlyphBlt for NonTE (proportional)
+ fonts. The idea is that everything in this file is device independent.
+ The mentioned GCOps are merely wrappers for the
+ PolyGlyphBltNonTEColorExpansion and ImageGlyphBltNonTEColorExpansion
+ functions which calculate the boxes containing arbitrarily clipped
+ text and passes them to the NonTEGlyphRenderer which will usually
+ be a lower level XAA function which renders these clipped glyphs using
+ the basic color expansion functions exported by the chipset driver.
+ The NonTEGlyphRenderer itself may optionally be driver supplied to
+ facilitate work-arounds/optimizations at a higher level than usual.
+
+ Written by Mark Vojkovich (mvojkovi@ucsd.edu)
+
+********************************************************************/
+
+#include "misc.h"
+#include "xf86.h"
+#include "xf86_ansic.h"
+#include "xf86_OSproc.h"
+
+#include "X.h"
+#include "font.h"
+#include "scrnintstr.h"
+#include "dixfontstr.h"
+#include "xf86str.h"
+#include "xaa.h"
+#include "xaacexp.h"
+#include "xaalocal.h"
+#include "gcstruct.h"
+#include "pixmapstr.h"
+
+
+static void ImageGlyphBltNonTEColorExpansion(ScrnInfoPtr pScrn,
+ int xInit, int yInit, FontPtr font,
+ int fg, int bg, unsigned planemask,
+ RegionPtr cclip, int nglyph,
+ unsigned char* gBase, CharInfoPtr *ppci);
+static int PolyGlyphBltNonTEColorExpansion(ScrnInfoPtr pScrn,
+ int xInit, int yInit, FontPtr font,
+ int fg, int rop, unsigned planemask,
+ RegionPtr cclip, int nglyph,
+ unsigned char* gBase, CharInfoPtr *ppci);
+
+/********************************************************************
+
+ GC level replacements for PolyText8/16 and ImageText8/16
+ for NonTE fonts when using color expansion.
+
+********************************************************************/
+
+
+int
+XAAPolyText8NonTEColorExpansion(
+ DrawablePtr pDraw,
+ GCPtr pGC,
+ int x,
+ int y,
+ int count,
+ char *chars )
+{
+ XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC);
+ unsigned long n;
+ int width = 0;
+
+ (*pGC->font->get_glyphs)(pGC->font, (unsigned long)count,
+ (unsigned char *)chars, Linear8Bit, &n, infoRec->CharInfo);
+
+ if(n) {
+ width = PolyGlyphBltNonTEColorExpansion( infoRec->pScrn,
+ x + pDraw->x, y + pDraw->y, pGC->font,
+ pGC->fgPixel, pGC->alu, pGC->planemask,
+ pGC->pCompositeClip, n, FONTGLYPHS(pGC->font),
+ infoRec->CharInfo);
+ }
+
+ return (x + width);
+}
+
+
+int
+XAAPolyText16NonTEColorExpansion(
+ DrawablePtr pDraw,
+ GCPtr pGC,
+ int x,
+ int y,
+ int count,
+ unsigned short *chars )
+{
+ XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC);
+ unsigned long n;
+ int width = 0;
+
+ (*pGC->font->get_glyphs)(
+ pGC->font, (unsigned long)count, (unsigned char *)chars,
+ (FONTLASTROW(pGC->font) == 0) ? Linear16Bit : TwoD16Bit,
+ &n, infoRec->CharInfo);
+
+ if(n) {
+ width = PolyGlyphBltNonTEColorExpansion( infoRec->pScrn,
+ x + pDraw->x, y + pDraw->y, pGC->font,
+ pGC->fgPixel, pGC->alu, pGC->planemask,
+ pGC->pCompositeClip, n, FONTGLYPHS(pGC->font),
+ infoRec->CharInfo);
+ }
+
+ return (x + width);
+}
+
+
+void
+XAAImageText8NonTEColorExpansion(
+ DrawablePtr pDraw,
+ GCPtr pGC,
+ int x,
+ int y,
+ int count,
+ char *chars
+){
+ XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC);
+ unsigned long n;
+
+ if(!REGION_NUM_RECTS(pGC->pCompositeClip))
+ return;
+
+ (*pGC->font->get_glyphs)(pGC->font, (unsigned long)count,
+ (unsigned char *)chars, Linear8Bit, &n, infoRec->CharInfo);
+
+ if(n) ImageGlyphBltNonTEColorExpansion(
+ infoRec->pScrn, x + pDraw->x, y + pDraw->y,
+ pGC->font, pGC->fgPixel, pGC->bgPixel, pGC->planemask,
+ pGC->pCompositeClip, n, FONTGLYPHS(pGC->font), infoRec->CharInfo);
+}
+
+
+void
+XAAImageText16NonTEColorExpansion(
+ DrawablePtr pDraw,
+ GCPtr pGC,
+ int x,
+ int y,
+ int count,
+ unsigned short *chars
+){
+ XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC);
+ unsigned long n;
+
+ if(!REGION_NUM_RECTS(pGC->pCompositeClip))
+ return;
+
+ (*pGC->font->get_glyphs)(
+ pGC->font, (unsigned long)count, (unsigned char *)chars,
+ (FONTLASTROW(pGC->font) == 0) ? Linear16Bit : TwoD16Bit,
+ &n, infoRec->CharInfo);
+
+ if(n) ImageGlyphBltNonTEColorExpansion(
+ infoRec->pScrn, x + pDraw->x, y + pDraw->y,
+ pGC->font, pGC->fgPixel, pGC->bgPixel, pGC->planemask,
+ pGC->pCompositeClip, n, FONTGLYPHS(pGC->font), infoRec->CharInfo);
+}
+
+
+
+/********************************************************************
+
+ GC level replacements for ImageGlyphBlt and PolyGlyphBlt for
+ NonTE fonts when using color expansion.
+
+********************************************************************/
+
+
+void
+XAAImageGlyphBltNonTEColorExpansion(
+ DrawablePtr pDraw,
+ GCPtr pGC,
+ int xInit, int yInit,
+ unsigned int nglyph,
+ CharInfoPtr *ppci, /* array of character info */
+ pointer pglyphBase /* start of array of glyphs */
+){
+ XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC);
+
+ if(!REGION_NUM_RECTS(pGC->pCompositeClip))
+ return;
+
+ ImageGlyphBltNonTEColorExpansion(
+ infoRec->pScrn, xInit + pDraw->x, yInit + pDraw->y,
+ pGC->font, pGC->fgPixel, pGC->bgPixel, pGC->planemask,
+ pGC->pCompositeClip, nglyph, (unsigned char*)pglyphBase, ppci);
+}
+
+void
+XAAPolyGlyphBltNonTEColorExpansion(
+ DrawablePtr pDraw,
+ GCPtr pGC,
+ int xInit, int yInit,
+ unsigned int nglyph,
+ CharInfoPtr *ppci, /* array of character info */
+ pointer pglyphBase /* start of array of glyphs */
+){
+ XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC);
+
+ if(!REGION_NUM_RECTS(pGC->pCompositeClip))
+ return;
+
+ PolyGlyphBltNonTEColorExpansion(
+ infoRec->pScrn, xInit + pDraw->x, yInit + pDraw->y,
+ pGC->font, pGC->fgPixel, pGC->alu, pGC->planemask,
+ pGC->pCompositeClip, nglyph, (unsigned char*)pglyphBase, ppci);
+}
+
+
+
+
+/********************************************************************
+
+ ImageGlyphBltNonTEColorExpansion -
+ PolyGlyphBltNonTEColorExpansion -
+
+ These guys compute the clipped pieces of text and send it to
+ the lower-level function which will handle acceleration of
+ arbitrarily clipped text.
+
+********************************************************************/
+
+
+
+static int
+CollectCharacterInfo(
+ NonTEGlyphPtr glyphs,
+ unsigned int nglyph,
+ CharInfoPtr *ppci,
+ FontPtr pfont
+){
+ int i, w = 0;
+
+ for(i = 0; i < nglyph; i++, ppci++, glyphs++) {
+ glyphs->bits = (unsigned char*)((*ppci)->bits);
+ glyphs->start = w + (*ppci)->metrics.leftSideBearing;
+ glyphs->end = w + (*ppci)->metrics.rightSideBearing;
+ glyphs->yoff = (*ppci)->metrics.ascent;
+ glyphs->height = glyphs->yoff + (*ppci)->metrics.descent;
+ glyphs->srcwidth = PADGLYPHWIDTHBYTES(glyphs->end - glyphs->start);
+ w += (*ppci)->metrics.characterWidth;
+ }
+ return w;
+}
+
+
+static void
+PolyGlyphBltAsSingleBitmap (
+ ScrnInfoPtr pScrn,
+ int nglyph,
+ FontPtr font,
+ int xInit,
+ int yInit,
+ int nbox,
+ BoxPtr pbox,
+ int fg,
+ int rop,
+ unsigned planemask
+){
+ XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_SCRNINFOPTR(pScrn);
+ CARD32 *block, *pntr, *bits;
+ int pitch, topLine, botLine, top, bot, height;
+ int Left, Right, Top, Bottom;
+ int LeftEdge, RightEdge;
+ int bitPitch, shift, size, i, skippix;
+ NonTEGlyphPtr glyphs = infoRec->GlyphInfo;
+ Bool extra;
+
+ Left = xInit + infoRec->GlyphInfo[0].start;
+ Right = xInit + infoRec->GlyphInfo[nglyph - 1].end;
+ Top = yInit - FONTMAXBOUNDS(font,ascent);
+ Bottom = yInit + FONTMAXBOUNDS(font,descent);
+
+ /* get into the first band that may contain part of our string */
+ while(nbox && (Top >= pbox->y2)) {
+ pbox++; nbox--;
+ }
+
+ if(!nbox) return;
+
+ pitch = (Right - Left + 31) >> 5;
+ size = (pitch << 2) * (Bottom - Top);
+ block = (CARD32*)ALLOCATE_LOCAL(size);
+ bzero(block, size);
+
+ topLine = 10000; botLine = -10000;
+
+ while(nglyph--) {
+ top = -glyphs->yoff;
+ bot = top + glyphs->height;
+ if(top < topLine) topLine = top;
+ if(bot > botLine) botLine = bot;
+ skippix = glyphs->start - infoRec->GlyphInfo[0].start;
+ bits = (CARD32*)glyphs->bits;
+ bitPitch = glyphs->srcwidth >> 2;
+ pntr = block + ((FONTMAXBOUNDS(font,ascent) + top) * pitch) +
+ (skippix >> 5);
+ shift = skippix & 31;
+ extra = ((shift + glyphs->end - glyphs->start) > 32);
+
+ for(i = top; i < bot; i++) {
+ *pntr |= SHIFT_L(*bits, shift);
+ if(extra)
+ *(pntr + 1) |= SHIFT_R(*bits,32 - shift);
+ pntr += pitch;
+ bits += bitPitch;
+ }
+
+ glyphs++;
+ }
+
+ pntr = block + ((FONTMAXBOUNDS(font,ascent) + topLine) * pitch);
+
+ Top = yInit + topLine;
+ Bottom = yInit + botLine;
+
+ while(nbox && (Top >= pbox->y2)) {
+ pbox++; nbox--;
+ }
+
+ while(nbox && (Bottom > pbox->y1)) {
+ LeftEdge = max(Left, pbox->x1);
+ RightEdge = min(Right, pbox->x2);
+
+ if(RightEdge > LeftEdge) {
+ skippix = LeftEdge - Left;
+ topLine = max(Top, pbox->y1);
+ botLine = min(Bottom, pbox->y2);
+ height = botLine - topLine;
+
+ if(height > 0)
+ (*infoRec->WriteBitmap)(pScrn, LeftEdge, topLine,
+ RightEdge - LeftEdge, height,
+ (unsigned char*)(pntr + ((topLine - Top) * pitch) +
+ (skippix >> 5)),
+ pitch << 2, skippix & 31, fg, -1, rop, planemask);
+ }
+
+ nbox--; pbox++;
+ }
+
+ DEALLOCATE_LOCAL(block);
+}
+
+static void
+ImageGlyphBltNonTEColorExpansion(
+ ScrnInfoPtr pScrn,
+ int xInit, int yInit,
+ FontPtr font,
+ int fg, int bg,
+ unsigned planemask,
+ RegionPtr cclip,
+ int nglyph,
+ unsigned char* gBase,
+ CharInfoPtr *ppci
+){
+ XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_SCRNINFOPTR(pScrn);
+ int skippix, skipglyph, width, n, i;
+ int Left, Right, Top, Bottom;
+ int LeftEdge, RightEdge, ytop, ybot;
+ int nbox = REGION_NUM_RECTS(cclip);
+ BoxPtr pbox = REGION_RECTS(cclip);
+ Bool AlreadySetup = FALSE;
+
+ width = CollectCharacterInfo(infoRec->GlyphInfo, nglyph, ppci, font);
+
+ /* find our backing rectangle dimensions */
+ Left = xInit;
+ Right = Left + width;
+ Top = yInit - FONTASCENT(font);
+ Bottom = yInit + FONTDESCENT(font);
+
+ /* get into the first band that may contain part of our box */
+ while(nbox && (Top >= pbox->y2)) {
+ pbox++; nbox--;
+ }
+
+ while(nbox && (Bottom >= pbox->y1)) {
+ /* handle backing rect first */
+ LeftEdge = max(Left, pbox->x1);
+ RightEdge = min(Right, pbox->x2);
+ if(RightEdge > LeftEdge) {
+ ytop = max(Top, pbox->y1);
+ ybot = min(Bottom, pbox->y2);
+
+ if(ybot > ytop) {
+ if(!AlreadySetup) {
+ (*infoRec->SetupForSolidFill)(pScrn, bg, GXcopy, planemask);
+ AlreadySetup = TRUE;
+ }
+ (*infoRec->SubsequentSolidFillRect)(pScrn,
+ LeftEdge, ytop, RightEdge - LeftEdge, ybot - ytop);
+ }
+ }
+ nbox--; pbox++;
+ }
+
+ nbox = REGION_NUM_RECTS(cclip);
+ pbox = REGION_RECTS(cclip);
+
+ if(infoRec->WriteBitmap && (nglyph > 1) &&
+ ((FONTMAXBOUNDS(font, rightSideBearing) -
+ FONTMINBOUNDS(font, leftSideBearing)) <= 32))
+ {
+ PolyGlyphBltAsSingleBitmap(pScrn, nglyph, font,
+ xInit, yInit, nbox, pbox,
+ fg, GXcopy, planemask);
+
+ return;
+ }
+
+ /* compute an approximate but covering bounding box */
+ Left = xInit + infoRec->GlyphInfo[0].start;
+ Right = xInit + infoRec->GlyphInfo[nglyph - 1].end;
+ Top = yInit - FONTMAXBOUNDS(font,ascent);
+ Bottom = yInit + FONTMAXBOUNDS(font,descent);
+
+ /* get into the first band that may contain part of our box */
+ while(nbox && (Top >= pbox->y2)) {
+ pbox++; nbox--;
+ }
+
+ /* stop when the lower edge of the box is beyond our string */
+ while(nbox && (Bottom >= pbox->y1)) {
+ LeftEdge = max(Left, pbox->x1);
+ RightEdge = min(Right, pbox->x2);
+
+ if(RightEdge > LeftEdge) { /* we're possibly drawing something */
+ ytop = max(Top, pbox->y1);
+ ybot = min(Bottom, pbox->y2);
+ if(ybot > ytop) {
+ skippix = LeftEdge - xInit;
+ skipglyph = 0;
+ while(skippix >= infoRec->GlyphInfo[skipglyph].end)
+ skipglyph++;
+
+ skippix = RightEdge - xInit;
+ n = 0; i = skipglyph;
+ while((i < nglyph) && (skippix > infoRec->GlyphInfo[i].start)) {
+ i++; n++;
+ }
+
+ if(n) (*infoRec->NonTEGlyphRenderer)(pScrn,
+ xInit, yInit, n, infoRec->GlyphInfo + skipglyph,
+ pbox, fg, GXcopy, planemask);
+ }
+ }
+
+ nbox--; pbox++;
+ }
+}
+
+
+static int
+PolyGlyphBltNonTEColorExpansion(
+ ScrnInfoPtr pScrn,
+ int xInit, int yInit,
+ FontPtr font,
+ int fg, int rop,
+ unsigned planemask,
+ RegionPtr cclip,
+ int nglyph,
+ unsigned char* gBase,
+ CharInfoPtr *ppci
+){
+ XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_SCRNINFOPTR(pScrn);
+ int skippix, skipglyph, width, n, i;
+ int Left, Right, Top, Bottom;
+ int LeftEdge, RightEdge;
+ int nbox = REGION_NUM_RECTS(cclip);
+ BoxPtr pbox = REGION_RECTS(cclip);
+
+ width = CollectCharacterInfo(infoRec->GlyphInfo, nglyph, ppci, font);
+
+ if(!nbox)
+ return width;
+
+ if((infoRec->WriteBitmap) && (rop == GXcopy) && (nglyph > 1) &&
+ ((FONTMAXBOUNDS(font, rightSideBearing) -
+ FONTMINBOUNDS(font, leftSideBearing)) <= 32)) {
+
+ PolyGlyphBltAsSingleBitmap(pScrn, nglyph, font,
+ xInit, yInit, nbox, pbox,
+ fg, rop, planemask);
+
+ return width;
+ }
+
+ /* compute an approximate but covering bounding box */
+ Left = xInit + infoRec->GlyphInfo[0].start;
+ Right = xInit + infoRec->GlyphInfo[nglyph - 1].end;
+ Top = yInit - FONTMAXBOUNDS(font,ascent);
+ Bottom = yInit + FONTMAXBOUNDS(font,descent);
+
+ /* get into the first band that may contain part of our string */
+ while(nbox && (Top >= pbox->y2)) {
+ pbox++; nbox--;
+ }
+
+ /* stop when the lower edge of the box is beyond our string */
+ while(nbox && (Bottom >= pbox->y1)) {
+ LeftEdge = max(Left, pbox->x1);
+ RightEdge = min(Right, pbox->x2);
+
+ if(RightEdge > LeftEdge) { /* we're possibly drawing something */
+
+ skippix = LeftEdge - xInit;
+ skipglyph = 0;
+ while(skippix >= infoRec->GlyphInfo[skipglyph].end)
+ skipglyph++;
+
+ skippix = RightEdge - xInit;
+ n = 0; i = skipglyph;
+ while((i < nglyph) && (skippix > infoRec->GlyphInfo[i].start)) {
+ i++; n++;
+ }
+
+ if(n) (*infoRec->NonTEGlyphRenderer)(pScrn,
+ xInit, yInit, n, infoRec->GlyphInfo + skipglyph,
+ pbox, fg, rop, planemask);
+ }
+
+ nbox--; pbox++;
+ }
+ return width;
+}
+
+
+/* It is possible that the none of the glyphs passed to the
+ NonTEGlyphRenderer will be drawn. This function being called
+ indicates that part of the text string's bounding box is visible
+ but not necessarily that any of the characters are visible */
+
+void XAANonTEGlyphRenderer(
+ ScrnInfoPtr pScrn,
+ int x, int y, int n,
+ NonTEGlyphPtr glyphs,
+ BoxPtr pbox,
+ int fg, int rop,
+ unsigned int planemask
+){
+ XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_SCRNINFOPTR(pScrn);
+ int x1, x2, y1, y2, i, w, h, skipleft, skiptop;
+ unsigned char *src;
+
+ for(i = 0; i < n; i++, glyphs++) {
+ x1 = x + glyphs->start;
+ x2 = x + glyphs->end;
+ y1 = y - glyphs->yoff;
+ y2 = y1 + glyphs->height;
+
+ if(y1 < pbox->y1) {
+ skiptop = pbox->y1 - y1;
+ y1 = pbox->y1;
+ } else skiptop = 0;
+ if(y2 > pbox->y2) y2 = pbox->y2;
+ h = y2 - y1;
+ if(h <= 0) continue;
+
+ if(x1 < pbox->x1) {
+ skipleft = pbox->x1 - x1;
+ x1 = pbox->x1;
+ } else skipleft = 0;
+ if(x2 > pbox->x2) x2 = pbox->x2;
+
+ w = x2 - x1;
+
+ if(w > 0) {
+ src = glyphs->bits + (skiptop * glyphs->srcwidth);
+
+ if(skipleft) {
+ src += (skipleft >> 5) << 2;
+ skipleft &= 31;
+ }
+
+ (*infoRec->WriteBitmap)(pScrn, x1, y1, w, h, src,
+ glyphs->srcwidth, skipleft, fg, -1, rop, planemask);
+ }
+ }
+
+}
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