objects/pen.c

   1 /*
   2  * GDI pen objects
   3  *
   4  * Copyright 1993 Alexandre Julliard
   5  */
   6
   7 static char Copyright[] = "Copyright  Alexandre Julliard, 1993";
   8
   9 #include "gdi.h"
  10
  11 extern WORD COLOR_ToPhysical( DC *dc, COLORREF color );
  12
  13 /***********************************************************************
  14  *           CreatePen    (GDI.61)
  15  */
  16 HPEN CreatePen( short style, short width, COLORREF color )
  17 {
  18     LOGPEN logpen = { style, { width, 0 }, color };
  19 #ifdef DEBUG_GDI
  20     printf( "CreatePen: %d %d %06x\n", style, width, color );
  21 #endif
  22     return CreatePenIndirect( &logpen );
  23 }
  24
  25
  26 /***********************************************************************
  27  *           CreatePenIndirect    (GDI.62)
  28  */
  29 HPEN CreatePenIndirect( LOGPEN * pen )
  30 {
  31     PENOBJ * penPtr;
  32     HPEN hpen;
  33
  34     if (pen->lopnStyle > PS_INSIDEFRAME) return 0;
  35     hpen = GDI_AllocObject( sizeof(PENOBJ), PEN_MAGIC );
  36     if (!hpen) return 0;
  37     penPtr = (PENOBJ *) GDI_HEAP_ADDR( hpen );
  38     memcpy( &penPtr->logpen, pen, sizeof(LOGPEN) );
  39     return hpen;
  40 }
  41
  42
  43 /***********************************************************************
  44  *           PEN_GetObject
  45  */
  46 int PEN_GetObject( PENOBJ * pen, int count, LPSTR buffer )
  47 {
  48     if (count > sizeof(LOGPEN)) count = sizeof(LOGPEN);
  49     memcpy( buffer, &pen->logpen, count );
  50     return count;
  51 }
  52
  53
  54 /***********************************************************************
  55  *           PEN_SelectObject
  56  */
  57 HPEN PEN_SelectObject( DC * dc, HPEN hpen, PENOBJ * pen )
  58 {
  59     static char dash_dash[]       = { 5, 3 };      /* -----   -----   -----  */
  60     static char dash_dot[]        = { 2, 2 };      /* --  --  --  --  --  -- */
  61     static char dash_dashdot[]    = { 4,3,2,3 };   /* ----   --   ----   --  */
  62     static char dash_dashdotdot[] = { 4,2,2,2,2,2 };  /* ----  --  --  ----  */
  63
  64     HPEN prevHandle = dc->w.hPen;
  65     dc->w.hPen = hpen;
  66
  67     dc->u.x.pen.style = pen->logpen.lopnStyle;
  68     dc->u.x.pen.width = pen->logpen.lopnWidth.x * dc->w.VportExtX
  69                           / dc->w.WndExtX;
  70     if (dc->u.x.pen.width < 0) dc->u.x.pen.width = -dc->u.x.pen.width;
  71     if (dc->u.x.pen.width == 1) dc->u.x.pen.width = 0;  /* Faster */
  72     dc->u.x.pen.pixel = COLOR_ToPhysical( dc, pen->logpen.lopnColor );
  73     switch(pen->logpen.lopnStyle)
  74     {
  75       case PS_DASH:
  76         dc->u.x.pen.dashes = dash_dash;
  77         dc->u.x.pen.dash_len = 2;
  78         break;
  79       case PS_DOT:
  80         dc->u.x.pen.dashes = dash_dot;
  81         dc->u.x.pen.dash_len = 2;
  82         break;
  83       case PS_DASHDOT:
  84         dc->u.x.pen.dashes = dash_dashdot;
  85         dc->u.x.pen.dash_len = 4;
  86         break;
  87       case PS_DASHDOTDOT:
  88         dc->u.x.pen.dashes = dash_dashdotdot;
  89         dc->u.x.pen.dash_len = 6;
  90         break;
  91     }
  92
  93     return prevHandle;
  94 }