xorg-server-1.4/mi/mipolyrect.c

   1 /***********************************************************
   2
   3 Copyright 1987, 1998  The Open Group
   4
   5 Permission to use, copy, modify, distribute, and sell this software and its
   6 documentation for any purpose is hereby granted without fee, provided that
   7 the above copyright notice appear in all copies and that both that
   8 copyright notice and this permission notice appear in supporting
   9 documentation.
  10
  11 The above copyright notice and this permission notice shall be included in
  12 all copies or substantial portions of the Software.
  13
  14 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
  17 OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  18 AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  19 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  20
  21 Except as contained in this notice, the name of The Open Group shall not be
  22 used in advertising or otherwise to promote the sale, use or other dealings
  23 in this Software without prior written authorization from The Open Group.
  24
  25
  26 Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
  27
  28                         All Rights Reserved
  29
  30 Permission to use, copy, modify, and distribute this software and its
  31 documentation for any purpose and without fee is hereby granted,
  32 provided that the above copyright notice appear in all copies and that
  33 both that copyright notice and this permission notice appear in
  34 supporting documentation, and that the name of Digital not be
  35 used in advertising or publicity pertaining to distribution of the
  36 software without specific, written prior permission.
  37
  38 DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
  39 ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
  40 DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
  41 ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
  42 WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
  43 ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
  44 SOFTWARE.
  45
  46 ******************************************************************/
  47 #ifdef HAVE_DIX_CONFIG_H
  48 #include <dix-config.h>
  49 #endif
  50
  51 #include <X11/X.h>
  52 #include <X11/Xprotostr.h>
  53 #include "regionstr.h"
  54 #include "gcstruct.h"
  55 #include "pixmap.h"
  56 #include "mi.h"
  57
  58 _X_EXPORT void
  59 miPolyRectangle(pDraw, pGC, nrects, pRects)
  60     DrawablePtr pDraw;
  61     GCPtr       pGC;
  62     int         nrects;
  63     xRectangle  *pRects;
  64 {
  65     int i;
  66     xRectangle *pR = pRects;
  67     DDXPointRec rect[5];
  68     int     bound_tmp;
  69
  70 #define MINBOUND(dst,eqn)       bound_tmp = eqn; \
  71                                 if (bound_tmp < -32768) \
  72                                     bound_tmp = -32768; \
  73                                 dst = bound_tmp;
  74
  75 #define MAXBOUND(dst,eqn)       bound_tmp = eqn; \
  76                                 if (bound_tmp > 32767) \
  77                                     bound_tmp = 32767; \
  78                                 dst = bound_tmp;
  79
  80 #define MAXUBOUND(dst,eqn)      bound_tmp = eqn; \
  81                                 if (bound_tmp > 65535) \
  82                                     bound_tmp = 65535; \
  83                                 dst = bound_tmp;
  84
  85     if (pGC->lineStyle == LineSolid && pGC->joinStyle == JoinMiter &&
  86         pGC->lineWidth != 0)
  87     {
  88         xRectangle  *tmp, *t;
  89         int         ntmp;
  90         int         offset1, offset2, offset3;
  91         int         x, y, width, height;
  92
  93         ntmp = (nrects << 2);
  94         offset2 = pGC->lineWidth;
  95         offset1 = offset2 >> 1;
  96         offset3 = offset2 - offset1;
  97         tmp = (xRectangle *) ALLOCATE_LOCAL(ntmp * sizeof (xRectangle));
  98         if (!tmp)
  99             return;
 100         t = tmp;
 101         for (i = 0; i < nrects; i++)
 102         {
 103             x = pR->x;
 104             y = pR->y;
 105             width = pR->width;
 106             height = pR->height;
 107             pR++;
 108             if (width == 0 && height == 0)
 109             {
 110                 rect[0].x = x;
 111                 rect[0].y = y;
 112                 rect[1].x = x;
 113                 rect[1].y = y;
 114                 (*pGC->ops->Polylines)(pDraw, pGC, CoordModeOrigin, 2, rect);
 115             }
 116             else if (height < offset2 || width < offset1)
 117             {
 118                 if (height == 0)
 119                 {
 120                     t->x = x;
 121                     t->width = width;
 122                 }
 123                 else
 124                 {
 125                     MINBOUND (t->x, x - offset1)
 126                     MAXUBOUND (t->width, width + offset2)
 127                 }
 128                 if (width == 0)
 129                 {
 130                     t->y = y;
 131                     t->height = height;
 132                 }
 133                 else
 134                 {
 135                     MINBOUND (t->y, y - offset1)
 136                     MAXUBOUND (t->height, height + offset2)
 137                 }
 138                 t++;
 139             }
 140             else
 141             {
 142                 MINBOUND(t->x, x - offset1)
 143                 MINBOUND(t->y, y - offset1)
 144                 MAXUBOUND(t->width, width + offset2)
 145                 t->height = offset2;
 146                 t++;
 147                 MINBOUND(t->x, x - offset1)
 148                 MAXBOUND(t->y, y + offset3);
 149                 t->width = offset2;
 150                 t->height = height - offset2;
 151                 t++;
 152                 MAXBOUND(t->x, x + width - offset1);
 153                 MAXBOUND(t->y, y + offset3)
 154                 t->width = offset2;
 155                 t->height = height - offset2;
 156                 t++;
 157                 MINBOUND(t->x, x - offset1)
 158                 MAXBOUND(t->y, y + height - offset1)
 159                 MAXUBOUND(t->width, width + offset2)
 160                 t->height = offset2;
 161                 t++;
 162             }
 163         }
 164         (*pGC->ops->PolyFillRect) (pDraw, pGC, t - tmp, tmp);
 165         DEALLOCATE_LOCAL ((pointer) tmp);
 166     }
 167     else
 168     {
 169
 170         for (i=0; i<nrects; i++)
 171         {
 172             rect[0].x = pR->x;
 173             rect[0].y = pR->y;
 174
 175             MAXBOUND(rect[1].x, pR->x + (int) pR->width)
 176             rect[1].y = rect[0].y;
 177
 178             rect[2].x = rect[1].x;
 179             MAXBOUND(rect[2].y, pR->y + (int) pR->height);
 180
 181             rect[3].x = rect[0].x;
 182             rect[3].y = rect[2].y;
 183
 184             rect[4].x = rect[0].x;
 185             rect[4].y = rect[0].y;
 186
 187             (*pGC->ops->Polylines)(pDraw, pGC, CoordModeOrigin, 5, rect);
 188             pR++;
 189         }
 190     }
 191 }