| 1 | /* |
| 2 | * Copyright © 1998 Keith Packard |
| 3 | * |
| 4 | * Permission to use, copy, modify, distribute, and sell this software and its |
| 5 | * documentation for any purpose is hereby granted without fee, provided that |
| 6 | * the above copyright notice appear in all copies and that both that |
| 7 | * copyright notice and this permission notice appear in supporting |
| 8 | * documentation, and that the name of Keith Packard not be used in |
| 9 | * advertising or publicity pertaining to distribution of the software without |
| 10 | * specific, written prior permission. Keith Packard makes no |
| 11 | * representations about the suitability of this software for any purpose. It |
| 12 | * is provided "as is" without express or implied warranty. |
| 13 | * |
| 14 | * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, |
| 15 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO |
| 16 | * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR |
| 17 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, |
| 18 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| 19 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
| 20 | * PERFORMANCE OF THIS SOFTWARE. |
| 21 | */ |
| 22 | |
| 23 | #ifdef HAVE_DIX_CONFIG_H |
| 24 | #include <dix-config.h> |
| 25 | #endif |
| 26 | |
| 27 | #include "fb.h" |
| 28 | |
| 29 | void |
| 30 | fbZeroLine(DrawablePtr pDrawable, GCPtr pGC, int mode, int npt, DDXPointPtr ppt) |
| 31 | { |
| 32 | int x1, y1, x2, y2; |
| 33 | int x, y; |
| 34 | int dashOffset; |
| 35 | |
| 36 | x = pDrawable->x; |
| 37 | y = pDrawable->y; |
| 38 | x1 = ppt->x; |
| 39 | y1 = ppt->y; |
| 40 | dashOffset = pGC->dashOffset; |
| 41 | while (--npt) { |
| 42 | ++ppt; |
| 43 | x2 = ppt->x; |
| 44 | y2 = ppt->y; |
| 45 | if (mode == CoordModePrevious) { |
| 46 | x2 += x1; |
| 47 | y2 += y1; |
| 48 | } |
| 49 | fbSegment(pDrawable, pGC, x1 + x, y1 + y, |
| 50 | x2 + x, y2 + y, |
| 51 | npt == 1 && pGC->capStyle != CapNotLast, &dashOffset); |
| 52 | x1 = x2; |
| 53 | y1 = y2; |
| 54 | } |
| 55 | } |
| 56 | |
| 57 | void |
| 58 | fbZeroSegment(DrawablePtr pDrawable, GCPtr pGC, int nseg, xSegment * pSegs) |
| 59 | { |
| 60 | int dashOffset; |
| 61 | int x, y; |
| 62 | Bool drawLast = pGC->capStyle != CapNotLast; |
| 63 | |
| 64 | x = pDrawable->x; |
| 65 | y = pDrawable->y; |
| 66 | while (nseg--) { |
| 67 | dashOffset = pGC->dashOffset; |
| 68 | fbSegment(pDrawable, pGC, |
| 69 | pSegs->x1 + x, pSegs->y1 + y, |
| 70 | pSegs->x2 + x, pSegs->y2 + y, drawLast, &dashOffset); |
| 71 | pSegs++; |
| 72 | } |
| 73 | } |
| 74 | |
| 75 | void |
| 76 | fbFixCoordModePrevious(int npt, DDXPointPtr ppt) |
| 77 | { |
| 78 | int x, y; |
| 79 | |
| 80 | x = ppt->x; |
| 81 | y = ppt->y; |
| 82 | npt--; |
| 83 | while (npt--) { |
| 84 | ppt++; |
| 85 | x = (ppt->x += x); |
| 86 | y = (ppt->y += y); |
| 87 | } |
| 88 | } |
| 89 | |
| 90 | void |
| 91 | fbPolyLine(DrawablePtr pDrawable, GCPtr pGC, int mode, int npt, DDXPointPtr ppt) |
| 92 | { |
| 93 | void (*line) (DrawablePtr, GCPtr, int mode, int npt, DDXPointPtr ppt); |
| 94 | |
| 95 | if (pGC->lineWidth == 0) { |
| 96 | line = fbZeroLine; |
| 97 | if (pGC->fillStyle == FillSolid && |
| 98 | pGC->lineStyle == LineSolid && |
| 99 | RegionNumRects(fbGetCompositeClip(pGC)) == 1) { |
| 100 | switch (pDrawable->bitsPerPixel) { |
| 101 | case 8: |
| 102 | line = fbPolyline8; |
| 103 | break; |
| 104 | case 16: |
| 105 | line = fbPolyline16; |
| 106 | break; |
| 107 | case 24: |
| 108 | line = fbPolyline24; |
| 109 | break; |
| 110 | case 32: |
| 111 | line = fbPolyline32; |
| 112 | break; |
| 113 | } |
| 114 | } |
| 115 | } |
| 116 | else { |
| 117 | if (pGC->lineStyle != LineSolid) |
| 118 | line = miWideDash; |
| 119 | else |
| 120 | line = miWideLine; |
| 121 | } |
| 122 | (*line) (pDrawable, pGC, mode, npt, ppt); |
| 123 | } |
| 124 | |
| 125 | void |
| 126 | fbPolySegment(DrawablePtr pDrawable, GCPtr pGC, int nseg, xSegment * pseg) |
| 127 | { |
| 128 | void (*seg) (DrawablePtr pDrawable, GCPtr pGC, int nseg, xSegment * pseg); |
| 129 | |
| 130 | if (pGC->lineWidth == 0) { |
| 131 | seg = fbZeroSegment; |
| 132 | if (pGC->fillStyle == FillSolid && |
| 133 | pGC->lineStyle == LineSolid && |
| 134 | RegionNumRects(fbGetCompositeClip(pGC)) == 1) { |
| 135 | switch (pDrawable->bitsPerPixel) { |
| 136 | case 8: |
| 137 | seg = fbPolySegment8; |
| 138 | break; |
| 139 | case 16: |
| 140 | seg = fbPolySegment16; |
| 141 | break; |
| 142 | case 24: |
| 143 | seg = fbPolySegment24; |
| 144 | break; |
| 145 | case 32: |
| 146 | seg = fbPolySegment32; |
| 147 | break; |
| 148 | } |
| 149 | } |
| 150 | } |
| 151 | else { |
| 152 | seg = miPolySegment; |
| 153 | } |
| 154 | (*seg) (pDrawable, pGC, nseg, pseg); |
| 155 | } |