dlls/winex11.drv/pen.c

   1 /*
   2  * X11DRV pen objects
   3  *
   4  * Copyright 1993 Alexandre Julliard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "config.h"
  22
  23 #include "x11drv.h"
  24
  25
  26 static DWORD get_user_dashes( char *res, const DWORD *style, DWORD len )
  27 {
  28     DWORD i, pos, dashes[MAX_DASHLEN];
  29
  30     len = min( len, MAX_DASHLEN );
  31     memcpy( dashes, style, len * sizeof(DWORD) );
  32     for (i = pos = 0; i < len; i++)
  33     {
  34         if (!dashes[i])  /* get rid of 0 entry */
  35         {
  36             if (i < len - 1)
  37             {
  38                 i++;
  39                 if (pos) dashes[pos - 1] += dashes[i];
  40                 else dashes[len - 1] += dashes[i];
  41             }
  42             else if (pos)
  43             {
  44                 dashes[0] += dashes[pos - 1];
  45                 pos--;
  46             }
  47         }
  48         else dashes[pos++] = dashes[i];
  49     }
  50     for (i = 0; i < pos; i++) res[i] = min( dashes[i], 255 );
  51     return pos;
  52 }
  53
  54 /***********************************************************************
  55  *           SelectPen   (X11DRV.@)
  56  */
  57 HPEN X11DRV_SelectPen( PHYSDEV dev, HPEN hpen, const struct brush_pattern *pattern )
  58 {
  59     static const char PEN_dash[]          = { 16,8 };
  60     static const char PEN_dot[]           = { 4,4 };
  61     static const char PEN_dashdot[]       = { 12,8,4,8 };
  62     static const char PEN_dashdotdot[]    = { 12,4,4,4,4,4 };
  63     static const char PEN_alternate[]     = { 1,1 };
  64     static const char EXTPEN_dash[]       = { 3,1 };
  65     static const char EXTPEN_dot[]        = { 1,1 };
  66     static const char EXTPEN_dashdot[]    = { 3,1,1,1 };
  67     static const char EXTPEN_dashdotdot[] = { 3,1,1,1,1,1 };
  68     X11DRV_PDEVICE *physDev = get_x11drv_dev( dev );
  69     LOGPEN logpen;
  70     int i;
  71     EXTLOGPEN *elp = NULL;
  72
  73     if (!GetObjectW( hpen, sizeof(logpen), &logpen ))
  74     {
  75         /* must be an extended pen */
  76         INT size = GetObjectW( hpen, 0, NULL );
  77
  78         if (!size) return 0;
  79
  80         physDev->pen.ext = 1;
  81         elp = HeapAlloc( GetProcessHeap(), 0, size );
  82
  83         GetObjectW( hpen, size, elp );
  84         logpen.lopnStyle = elp->elpPenStyle;
  85         logpen.lopnWidth.x = elp->elpWidth;
  86         logpen.lopnWidth.y = 0;
  87         logpen.lopnColor = elp->elpColor;
  88     }
  89     else
  90         physDev->pen.ext = 0;
  91
  92     physDev->pen.style = logpen.lopnStyle & PS_STYLE_MASK;
  93     physDev->pen.type = logpen.lopnStyle & PS_TYPE_MASK;
  94     physDev->pen.endcap = logpen.lopnStyle & PS_ENDCAP_MASK;
  95     physDev->pen.linejoin = logpen.lopnStyle & PS_JOIN_MASK;
  96
  97     physDev->pen.width = logpen.lopnWidth.x;
  98     if ((logpen.lopnStyle & PS_GEOMETRIC) || (physDev->pen.width >= 1))
  99     {
 100         physDev->pen.width = X11DRV_XWStoDS( dev->hdc, physDev->pen.width );
 101         if (physDev->pen.width < 0) physDev->pen.width = -physDev->pen.width;
 102     }
 103
 104     if (physDev->pen.width == 1) physDev->pen.width = 0;  /* Faster */
 105     if (hpen == GetStockObject( DC_PEN ))
 106         logpen.lopnColor = GetDCPenColor( dev->hdc );
 107     physDev->pen.pixel = X11DRV_PALETTE_ToPhysical( physDev, logpen.lopnColor );
 108     switch(logpen.lopnStyle & PS_STYLE_MASK)
 109     {
 110       case PS_DASH:
 111             physDev->pen.dash_len = sizeof(PEN_dash)/sizeof(*PEN_dash);
 112             memcpy(physDev->pen.dashes, physDev->pen.ext ? EXTPEN_dash : PEN_dash,
 113                    physDev->pen.dash_len);
 114             break;
 115       case PS_DOT:
 116             physDev->pen.dash_len = sizeof(PEN_dot)/sizeof(*PEN_dot);
 117             memcpy(physDev->pen.dashes, physDev->pen.ext ? EXTPEN_dot : PEN_dot,
 118                    physDev->pen.dash_len);
 119             break;
 120       case PS_DASHDOT:
 121             physDev->pen.dash_len = sizeof(PEN_dashdot)/sizeof(*PEN_dashdot);
 122             memcpy(physDev->pen.dashes, physDev->pen.ext ? EXTPEN_dashdot : PEN_dashdot,
 123                    physDev->pen.dash_len);
 124             break;
 125       case PS_DASHDOTDOT:
 126             physDev->pen.dash_len = sizeof(PEN_dashdotdot)/sizeof(*PEN_dashdotdot);
 127             memcpy(physDev->pen.dashes, physDev->pen.ext ? EXTPEN_dashdotdot : PEN_dashdotdot,
 128                    physDev->pen.dash_len);
 129             break;
 130       case PS_ALTERNATE:
 131             physDev->pen.dash_len = sizeof(PEN_alternate)/sizeof(*PEN_alternate);
 132             memcpy(physDev->pen.dashes, PEN_alternate, physDev->pen.dash_len);
 133             break;
 134       case PS_USERSTYLE:
 135             physDev->pen.dash_len = get_user_dashes( physDev->pen.dashes,
 136                                                      elp->elpStyleEntry, elp->elpNumEntries );
 137             break;
 138       default:
 139         physDev->pen.dash_len = 0;
 140         break;
 141     }
 142     if(physDev->pen.ext && physDev->pen.dash_len && physDev->pen.width &&
 143        (logpen.lopnStyle & PS_STYLE_MASK) != PS_USERSTYLE &&
 144        (logpen.lopnStyle & PS_STYLE_MASK) != PS_ALTERNATE)
 145         for(i = 0; i < physDev->pen.dash_len; i++)
 146             physDev->pen.dashes[i] = min( physDev->pen.dashes[i] * physDev->pen.width, 255 );
 147
 148     HeapFree( GetProcessHeap(), 0, elp );
 149
 150     return hpen;
 151 }
 152
 153
 154 /***********************************************************************
 155  *           SetDCPenColor (X11DRV.@)
 156  */
 157 COLORREF X11DRV_SetDCPenColor( PHYSDEV dev, COLORREF crColor )
 158 {
 159     X11DRV_PDEVICE *physDev = get_x11drv_dev( dev );
 160
 161     if (GetCurrentObject(dev->hdc, OBJ_PEN) == GetStockObject( DC_PEN ))
 162         physDev->pen.pixel = X11DRV_PALETTE_ToPhysical( physDev, crColor );
 163
 164     return crColor;
 165 }