137 lines
3.7 KiB
C
137 lines
3.7 KiB
C
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#ifdef HAVE_XORG_CONFIG_H
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#include <xorg-config.h>
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#endif
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#include "misc.h"
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#include "xf86.h"
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#include "xf86_OSproc.h"
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#include <X11/X.h>
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#include "scrnintstr.h"
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#include "pixmapstr.h"
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#include "xf86str.h"
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#include "xaa.h"
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#include "xaalocal.h"
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/*
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Much of this file based on code by
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Harm Hanemaayer (H.Hanemaayer@inter.nl.net).
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*/
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void
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XAAPolyRectangleThinSolid(
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DrawablePtr pDrawable,
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GCPtr pGC,
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int nRectsInit,
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xRectangle *pRectsInit )
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{
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XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC);
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int nClipRects; /* number of clip rectangles */
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BoxPtr pClipRects; /* points to the list of clip rects */
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int xOrigin; /* Drawables x origin */
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int yOrigin; /* Drawables x origin */
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xRectangle *pRect; /* list of rects */
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int nRects; /* running count of number of rects */
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int origX1, origY1; /* original rectangle's U/L corner */
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int origX2, origY2; /* original rectangle's L/R corner */
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int clippedX1; /* clipped rectangle's left x */
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int clippedY1; /* clipped rectangle's top y */
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int clippedX2; /* clipped rectangle's right x */
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int clippedY2; /* clipped rectangle's bottom y */
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int clipXMin; /* upper left corner of clip rect */
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int clipYMin; /* upper left corner of clip rect */
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int clipXMax; /* lower right corner of clip rect */
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int clipYMax; /* lower right corner of clip rect */
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int width, height; /* width and height of rect */
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nClipRects = REGION_NUM_RECTS(pGC->pCompositeClip);
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pClipRects = REGION_RECTS(pGC->pCompositeClip);
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if(!nClipRects) return;
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xOrigin = pDrawable->x;
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yOrigin = pDrawable->y;
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(*infoRec->SetupForSolidLine)(infoRec->pScrn,
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pGC->fgPixel, pGC->alu, pGC->planemask);
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for ( ; nClipRects > 0;
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nClipRects--, pClipRects++ )
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{
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clipYMin = pClipRects->y1;
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clipYMax = pClipRects->y2 - 1;
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clipXMin = pClipRects->x1;
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clipXMax = pClipRects->x2 - 1;
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for (pRect = pRectsInit, nRects = nRectsInit;
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nRects > 0;
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nRects--, pRect++ )
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{
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/* translate rectangle data over to the drawable */
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origX1 = pRect->x + xOrigin;
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origY1 = pRect->y + yOrigin;
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origX2 = origX1 + pRect->width;
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origY2 = origY1 + pRect->height;
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/* reject entire rectangle if completely outside clip rect */
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if ((origX1 > clipXMax) || (origX2 < clipXMin) ||
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(origY1 > clipYMax) || (origY2 < clipYMin))
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continue;
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/* clip the rectangle */
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clippedX1 = max (origX1, clipXMin);
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clippedX2 = min (origX2, clipXMax);
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clippedY1 = max (origY1, clipYMin);
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clippedY2 = min (origY2, clipYMax);
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width = clippedX2 - clippedX1 + 1;
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if (origY1 >= clipYMin) {
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(*infoRec->SubsequentSolidHorVertLine)(infoRec->pScrn,
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clippedX1, clippedY1, width, DEGREES_0);
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/* don't overwrite corner */
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clippedY1++;
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}
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if ((origY2 <= clipYMax) && (origY1 != origY2)) {
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(*infoRec->SubsequentSolidHorVertLine)(infoRec->pScrn,
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clippedX1, clippedY2, width, DEGREES_0);
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/* don't overwrite corner */
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clippedY2--;
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}
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if (clippedY2 < clippedY1) continue;
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height = clippedY2 - clippedY1 + 1;
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/* draw vertical edges using lines if not clipped out */
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if (origX1 >= clipXMin)
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(*infoRec->SubsequentSolidHorVertLine)(infoRec->pScrn,
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clippedX1, clippedY1, height, DEGREES_270);
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if ((origX2 <= clipXMax) && (origX2 != origX1))
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(*infoRec->SubsequentSolidHorVertLine)(infoRec->pScrn,
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clippedX2, clippedY1, height, DEGREES_270);
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}
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}
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SET_SYNC_FLAG(infoRec);
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}
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