dlls/gdi32/pen.c

   1 /*
   2  * GDI 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 <stdarg.h>
  24 #include <stdlib.h>
  25 #include <string.h>
  26 #include <assert.h>
  27
  28 #include "windef.h"
  29 #include "winbase.h"
  30 #include "wingdi.h"
  31 #include "wine/wingdi16.h"
  32 #include "gdi_private.h"
  33 #include "wine/debug.h"
  34
  35 WINE_DEFAULT_DEBUG_CHANNEL(gdi);
  36
  37   /* GDI logical pen object */
  38 typedef struct
  39 {
  40     GDIOBJHDR header;
  41     EXTLOGPEN logpen;
  42 } PENOBJ;
  43
  44
  45 static HGDIOBJ PEN_SelectObject( HGDIOBJ handle, void *obj, HDC hdc );
  46 static INT PEN_GetObject16( HGDIOBJ handle, void *obj, INT count, LPVOID buffer );
  47 static INT PEN_GetObject( HGDIOBJ handle, void *obj, INT count, LPVOID buffer );
  48
  49 static const struct gdi_obj_funcs pen_funcs =
  50 {
  51     PEN_SelectObject,  /* pSelectObject */
  52     PEN_GetObject16,   /* pGetObject16 */
  53     PEN_GetObject,     /* pGetObjectA */
  54     PEN_GetObject,     /* pGetObjectW */
  55     NULL,              /* pUnrealizeObject */
  56     GDI_FreeObject     /* pDeleteObject */
  57 };
  58
  59
  60 /***********************************************************************
  61  *           CreatePen    (GDI32.@)
  62  */
  63 HPEN WINAPI CreatePen( INT style, INT width, COLORREF color )
  64 {
  65     LOGPEN logpen;
  66
  67     TRACE("%d %d %06x\n", style, width, color );
  68
  69     logpen.lopnStyle = style;
  70     logpen.lopnWidth.x = width;
  71     logpen.lopnWidth.y = 0;
  72     logpen.lopnColor = color;
  73
  74     return CreatePenIndirect( &logpen );
  75 }
  76
  77
  78 /***********************************************************************
  79  *           CreatePenIndirect    (GDI32.@)
  80  */
  81 HPEN WINAPI CreatePenIndirect( const LOGPEN * pen )
  82 {
  83     PENOBJ * penPtr;
  84     HPEN hpen;
  85
  86     if (!(penPtr = GDI_AllocObject( sizeof(PENOBJ), PEN_MAGIC, (HGDIOBJ *)&hpen,
  87                                     &pen_funcs ))) return 0;
  88     if (pen->lopnStyle == PS_USERSTYLE || pen->lopnStyle == PS_ALTERNATE)
  89         penPtr->logpen.elpPenStyle = PS_SOLID;
  90     else
  91         penPtr->logpen.elpPenStyle = pen->lopnStyle;
  92     if (pen->lopnStyle == PS_NULL)
  93     {
  94         penPtr->logpen.elpWidth = 1;
  95         penPtr->logpen.elpColor = RGB(0, 0, 0);
  96     }
  97     else
  98     {
  99         penPtr->logpen.elpWidth = abs(pen->lopnWidth.x);
 100         penPtr->logpen.elpColor = pen->lopnColor;
 101     }
 102     penPtr->logpen.elpBrushStyle = BS_SOLID;
 103     penPtr->logpen.elpHatch = 0;
 104     penPtr->logpen.elpNumEntries = 0;
 105     penPtr->logpen.elpStyleEntry[0] = 0;
 106
 107     GDI_ReleaseObj( hpen );
 108     return hpen;
 109 }
 110
 111 /***********************************************************************
 112  *           ExtCreatePen    (GDI32.@)
 113  *
 114  * FIXME: PS_USERSTYLE not handled
 115  */
 116
 117 HPEN WINAPI ExtCreatePen( DWORD style, DWORD width,
 118                               const LOGBRUSH * brush, DWORD style_count,
 119                               const DWORD *style_bits )
 120 {
 121     PENOBJ * penPtr;
 122     HPEN hpen;
 123
 124     if ((style & PS_STYLE_MASK) == PS_USERSTYLE)
 125     {
 126         if (!style_count || !style_bits)
 127         {
 128             SetLastError(ERROR_INVALID_PARAMETER);
 129             return 0;
 130         }
 131         /* FIXME: PS_USERSTYLE workaround */
 132         FIXME("PS_USERSTYLE not handled\n");
 133         style = (style & ~PS_STYLE_MASK) | PS_SOLID;
 134     }
 135     else
 136     {
 137         if (style_count || style_bits)
 138         {
 139             SetLastError(ERROR_INVALID_PARAMETER);
 140             return 0;
 141         }
 142     }
 143
 144     if ((style & PS_STYLE_MASK) == PS_NULL)
 145         return CreatePen( PS_NULL, 0, brush->lbColor );
 146
 147     if ((style & PS_TYPE_MASK) == PS_GEOMETRIC)
 148     {
 149         /* PS_ALTERNATE is applicable only for cosmetic pens */
 150         if ((style & PS_STYLE_MASK) == PS_ALTERNATE)
 151         {
 152             SetLastError(ERROR_INVALID_PARAMETER);
 153             return 0;
 154         }
 155
 156         if (brush->lbHatch && ((brush->lbStyle == BS_SOLID) || (brush->lbStyle == BS_HOLLOW)))
 157         {
 158             static int fixme_hatches_shown;
 159             if (!fixme_hatches_shown++) FIXME("Hatches not implemented\n");
 160         }
 161     }
 162     else
 163     {
 164         /* PS_INSIDEFRAME is applicable only for gemetric pens */
 165         if ((style & PS_STYLE_MASK) == PS_INSIDEFRAME || width != 1)
 166         {
 167             SetLastError(ERROR_INVALID_PARAMETER);
 168             return 0;
 169         }
 170     }
 171
 172     if (!(penPtr = GDI_AllocObject( sizeof(PENOBJ) +
 173                                     style_count * sizeof(DWORD) - sizeof(penPtr->logpen.elpStyleEntry),
 174                                     EXT_PEN_MAGIC, (HGDIOBJ *)&hpen,
 175                                     &pen_funcs ))) return 0;
 176
 177     penPtr->logpen.elpPenStyle = style;
 178     penPtr->logpen.elpWidth = abs(width);
 179     penPtr->logpen.elpBrushStyle = brush->lbStyle;
 180     penPtr->logpen.elpColor = brush->lbColor;
 181     penPtr->logpen.elpHatch = brush->lbHatch;
 182     penPtr->logpen.elpNumEntries = style_count;
 183     memcpy(penPtr->logpen.elpStyleEntry, style_bits, style_count * sizeof(DWORD));
 184
 185     GDI_ReleaseObj( hpen );
 186
 187     return hpen;
 188 }
 189
 190
 191 /***********************************************************************
 192  *           PEN_SelectObject
 193  */
 194 static HGDIOBJ PEN_SelectObject( HGDIOBJ handle, void *obj, HDC hdc )
 195 {
 196     HGDIOBJ ret;
 197     DC *dc = DC_GetDCPtr( hdc );
 198
 199     if (!dc) return 0;
 200     ret = dc->hPen;
 201     if (dc->funcs->pSelectPen) handle = dc->funcs->pSelectPen( dc->physDev, handle );
 202     if (handle) dc->hPen = handle;
 203     else ret = 0;
 204     GDI_ReleaseObj( hdc );
 205     return ret;
 206 }
 207
 208
 209 /***********************************************************************
 210  *           PEN_GetObject16
 211  */
 212 static INT PEN_GetObject16( HGDIOBJ handle, void *obj, INT count, LPVOID buffer )
 213 {
 214     PENOBJ *pen = obj;
 215     LOGPEN16 *logpen;
 216
 217     if (!buffer) return sizeof(LOGPEN16);
 218
 219     if (count < sizeof(LOGPEN16)) return 0;
 220
 221     logpen = buffer;
 222     logpen->lopnStyle = pen->logpen.elpPenStyle;
 223     logpen->lopnColor = pen->logpen.elpColor;
 224     logpen->lopnWidth.x = pen->logpen.elpWidth;
 225     logpen->lopnWidth.y = 0;
 226
 227     return sizeof(LOGPEN16);
 228 }
 229
 230
 231 /***********************************************************************
 232  *           PEN_GetObject
 233  */
 234 static INT PEN_GetObject( HGDIOBJ handle, void *obj, INT count, LPVOID buffer )
 235 {
 236     PENOBJ *pen = obj;
 237
 238     switch (GDIMAGIC(pen->header.wMagic))
 239     {
 240     case PEN_MAGIC:
 241     {
 242         LOGPEN *lp;
 243
 244         if (!buffer) return sizeof(LOGPEN);
 245
 246         if (count < sizeof(LOGPEN)) return 0;
 247
 248         if ((pen->logpen.elpPenStyle & PS_STYLE_MASK) == PS_NULL &&
 249             count == sizeof(EXTLOGPEN))
 250         {
 251             EXTLOGPEN *elp = buffer;
 252             memcpy(elp, &pen->logpen, sizeof(EXTLOGPEN));
 253             elp->elpWidth = 0;
 254             return sizeof(EXTLOGPEN);
 255         }
 256
 257         lp = buffer;
 258         lp->lopnStyle = pen->logpen.elpPenStyle;
 259         lp->lopnColor = pen->logpen.elpColor;
 260         lp->lopnWidth.x = pen->logpen.elpWidth;
 261         lp->lopnWidth.y = 0;
 262         return sizeof(LOGPEN);
 263     }
 264
 265     case EXT_PEN_MAGIC:
 266     {
 267         INT size = sizeof(EXTLOGPEN) + pen->logpen.elpNumEntries * sizeof(DWORD) - sizeof(pen->logpen.elpStyleEntry);
 268
 269         if (!buffer) return size;
 270
 271         if (count < size) return 0;
 272         memcpy(buffer, &pen->logpen, size);
 273         return size;
 274     }
 275
 276     default:
 277         break;
 278     }
 279     assert(0);
 280     return 0;
 281 }