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 #include "metafile.h"
  11
  12 extern WORD COLOR_ToPhysical( DC *dc, COLORREF color );
  13
  14 /***********************************************************************
  15  *           CreatePen    (GDI.61)
  16  */
  17 HPEN CreatePen( short style, short width, COLORREF color )
  18 {
  19     LOGPEN logpen = { style, { width, 0 }, color };
  20 #ifdef DEBUG_GDI
  21     printf( "CreatePen: %d %d %06x\n", style, width, color );
  22 #endif
  23     return CreatePenIndirect( &logpen );
  24 }
  25
  26
  27 /***********************************************************************
  28  *           CreatePenIndirect    (GDI.62)
  29  */
  30 HPEN CreatePenIndirect( LOGPEN * pen )
  31 {
  32     PENOBJ * penPtr;
  33     HPEN hpen;
  34
  35     if (pen->lopnStyle > PS_INSIDEFRAME) return 0;
  36     hpen = GDI_AllocObject( sizeof(PENOBJ), PEN_MAGIC );
  37     if (!hpen) return 0;
  38     penPtr = (PENOBJ *) GDI_HEAP_ADDR( hpen );
  39     memcpy( &penPtr->logpen, pen, sizeof(LOGPEN) );
  40     return hpen;
  41 }
  42
  43
  44 /***********************************************************************
  45  *           PEN_GetObject
  46  */
  47 int PEN_GetObject( PENOBJ * pen, int count, LPSTR buffer )
  48 {
  49     if (count > sizeof(LOGPEN)) count = sizeof(LOGPEN);
  50     memcpy( buffer, &pen->logpen, count );
  51     return count;
  52 }
  53
  54
  55 /***********************************************************************
  56  *           PEN_SelectObject
  57  */
  58 HPEN PEN_SelectObject( DC * dc, HPEN hpen, PENOBJ * pen )
  59 {
  60     static char dash_dash[]       = { 5, 3 };      /* -----   -----   -----  */
  61     static char dash_dot[]        = { 2, 2 };      /* --  --  --  --  --  -- */
  62     static char dash_dashdot[]    = { 4,3,2,3 };   /* ----   --   ----   --  */
  63     static char dash_dashdotdot[] = { 4,2,2,2,2,2 };  /* ----  --  --  ----  */
  64     HPEN prevHandle = dc->w.hPen;
  65
  66     if (dc->header.wMagic == METAFILE_DC_MAGIC)
  67         return MF_CreatePenIndirect(dc, hpen, &(pen->logpen));
  68
  69     dc->w.hPen = hpen;
  70
  71     dc->u.x.pen.style = pen->logpen.lopnStyle;
  72     dc->u.x.pen.width = pen->logpen.lopnWidth.x * dc->w.VportExtX
  73                           / dc->w.WndExtX;
  74     if (dc->u.x.pen.width < 0) dc->u.x.pen.width = -dc->u.x.pen.width;
  75     if (dc->u.x.pen.width == 1) dc->u.x.pen.width = 0;  /* Faster */
  76     dc->u.x.pen.pixel = COLOR_ToPhysical( dc, pen->logpen.lopnColor );
  77     switch(pen->logpen.lopnStyle)
  78     {
  79       case PS_DASH:
  80         dc->u.x.pen.dashes = dash_dash;
  81         dc->u.x.pen.dash_len = 2;
  82         break;
  83       case PS_DOT:
  84         dc->u.x.pen.dashes = dash_dot;
  85         dc->u.x.pen.dash_len = 2;
  86         break;
  87       case PS_DASHDOT:
  88         dc->u.x.pen.dashes = dash_dashdot;
  89         dc->u.x.pen.dash_len = 4;
  90         break;
  91       case PS_DASHDOTDOT:
  92         dc->u.x.pen.dashes = dash_dashdotdot;
  93         dc->u.x.pen.dash_len = 6;
  94         break;
  95     }
  96
  97     return prevHandle;
  98 }